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2631 lines
70 KiB
2631 lines
70 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* builtin-stat.c |
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* |
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* Builtin stat command: Give a precise performance counters summary |
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* overview about any workload, CPU or specific PID. |
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* |
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* Sample output: |
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|
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$ perf stat ./hackbench 10 |
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|
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Time: 0.118 |
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|
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Performance counter stats for './hackbench 10': |
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|
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1708.761321 task-clock # 11.037 CPUs utilized |
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41,190 context-switches # 0.024 M/sec |
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6,735 CPU-migrations # 0.004 M/sec |
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17,318 page-faults # 0.010 M/sec |
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5,205,202,243 cycles # 3.046 GHz |
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3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle |
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1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle |
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2,603,501,247 instructions # 0.50 insns per cycle |
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# 1.48 stalled cycles per insn |
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484,357,498 branches # 283.455 M/sec |
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6,388,934 branch-misses # 1.32% of all branches |
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|
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0.154822978 seconds time elapsed |
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|
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* |
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* Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <[email protected]> |
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* |
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* Improvements and fixes by: |
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* |
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* Arjan van de Ven <[email protected]> |
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* Yanmin Zhang <[email protected]> |
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* Wu Fengguang <[email protected]> |
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* Mike Galbraith <[email protected]> |
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* Paul Mackerras <[email protected]> |
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* Jaswinder Singh Rajput <[email protected]> |
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*/ |
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|
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#include "builtin.h" |
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#include "perf.h" |
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#include "util/cgroup.h" |
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#include <subcmd/parse-options.h> |
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#include "util/parse-events.h" |
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#include "util/pmu.h" |
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#include "util/event.h" |
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#include "util/evlist.h" |
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#include "util/evlist-hybrid.h" |
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#include "util/evsel.h" |
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#include "util/debug.h" |
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#include "util/color.h" |
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#include "util/stat.h" |
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#include "util/header.h" |
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#include "util/cpumap.h" |
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#include "util/thread_map.h" |
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#include "util/counts.h" |
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#include "util/topdown.h" |
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#include "util/session.h" |
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#include "util/tool.h" |
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#include "util/string2.h" |
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#include "util/metricgroup.h" |
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#include "util/synthetic-events.h" |
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#include "util/target.h" |
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#include "util/time-utils.h" |
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#include "util/top.h" |
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#include "util/affinity.h" |
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#include "util/pfm.h" |
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#include "util/bpf_counter.h" |
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#include "util/iostat.h" |
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#include "util/pmu-hybrid.h" |
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#include "asm/bug.h" |
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|
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#include <linux/time64.h> |
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#include <linux/zalloc.h> |
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#include <api/fs/fs.h> |
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#include <errno.h> |
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#include <signal.h> |
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#include <stdlib.h> |
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#include <sys/prctl.h> |
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#include <inttypes.h> |
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#include <locale.h> |
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#include <math.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <sys/wait.h> |
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#include <unistd.h> |
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#include <sys/time.h> |
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#include <sys/resource.h> |
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#include <linux/err.h> |
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|
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#include <linux/ctype.h> |
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#include <perf/evlist.h> |
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|
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#define DEFAULT_SEPARATOR " " |
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#define FREEZE_ON_SMI_PATH "devices/cpu/freeze_on_smi" |
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|
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static void print_counters(struct timespec *ts, int argc, const char **argv); |
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|
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/* Default events used for perf stat -T */ |
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static const char *transaction_attrs = { |
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"task-clock," |
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"{" |
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"instructions," |
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"cycles," |
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"cpu/cycles-t/," |
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"cpu/tx-start/," |
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"cpu/el-start/," |
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"cpu/cycles-ct/" |
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"}" |
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}; |
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|
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/* More limited version when the CPU does not have all events. */ |
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static const char * transaction_limited_attrs = { |
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"task-clock," |
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"{" |
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"instructions," |
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"cycles," |
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"cpu/cycles-t/," |
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"cpu/tx-start/" |
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"}" |
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}; |
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static const char * topdown_attrs[] = { |
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"topdown-total-slots", |
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"topdown-slots-retired", |
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"topdown-recovery-bubbles", |
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"topdown-fetch-bubbles", |
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"topdown-slots-issued", |
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NULL, |
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}; |
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static const char *topdown_metric_attrs[] = { |
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"slots", |
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"topdown-retiring", |
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"topdown-bad-spec", |
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"topdown-fe-bound", |
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"topdown-be-bound", |
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NULL, |
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}; |
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static const char *topdown_metric_L2_attrs[] = { |
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"slots", |
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"topdown-retiring", |
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"topdown-bad-spec", |
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"topdown-fe-bound", |
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"topdown-be-bound", |
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"topdown-heavy-ops", |
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"topdown-br-mispredict", |
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"topdown-fetch-lat", |
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"topdown-mem-bound", |
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NULL, |
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}; |
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#define TOPDOWN_MAX_LEVEL 2 |
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|
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static const char *smi_cost_attrs = { |
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"{" |
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"msr/aperf/," |
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"msr/smi/," |
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"cycles" |
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"}" |
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}; |
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static struct evlist *evsel_list; |
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static bool all_counters_use_bpf = true; |
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|
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static struct target target = { |
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.uid = UINT_MAX, |
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}; |
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#define METRIC_ONLY_LEN 20 |
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|
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static volatile pid_t child_pid = -1; |
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static int detailed_run = 0; |
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static bool transaction_run; |
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static bool topdown_run = false; |
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static bool smi_cost = false; |
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static bool smi_reset = false; |
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static int big_num_opt = -1; |
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static bool group = false; |
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static const char *pre_cmd = NULL; |
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static const char *post_cmd = NULL; |
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static bool sync_run = false; |
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static bool forever = false; |
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static bool force_metric_only = false; |
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static struct timespec ref_time; |
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static bool append_file; |
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static bool interval_count; |
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static const char *output_name; |
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static int output_fd; |
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struct perf_stat { |
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bool record; |
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struct perf_data data; |
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struct perf_session *session; |
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u64 bytes_written; |
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struct perf_tool tool; |
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bool maps_allocated; |
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struct perf_cpu_map *cpus; |
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struct perf_thread_map *threads; |
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enum aggr_mode aggr_mode; |
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}; |
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static struct perf_stat perf_stat; |
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#define STAT_RECORD perf_stat.record |
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|
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static volatile int done = 0; |
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static struct perf_stat_config stat_config = { |
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.aggr_mode = AGGR_GLOBAL, |
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.scale = true, |
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.unit_width = 4, /* strlen("unit") */ |
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.run_count = 1, |
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.metric_only_len = METRIC_ONLY_LEN, |
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.walltime_nsecs_stats = &walltime_nsecs_stats, |
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.big_num = true, |
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.ctl_fd = -1, |
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.ctl_fd_ack = -1, |
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.iostat_run = false, |
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}; |
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static bool cpus_map_matched(struct evsel *a, struct evsel *b) |
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{ |
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if (!a->core.cpus && !b->core.cpus) |
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return true; |
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|
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if (!a->core.cpus || !b->core.cpus) |
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return false; |
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if (perf_cpu_map__nr(a->core.cpus) != perf_cpu_map__nr(b->core.cpus)) |
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return false; |
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for (int i = 0; i < perf_cpu_map__nr(a->core.cpus); i++) { |
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if (perf_cpu_map__cpu(a->core.cpus, i).cpu != |
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perf_cpu_map__cpu(b->core.cpus, i).cpu) |
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return false; |
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} |
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return true; |
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} |
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static void evlist__check_cpu_maps(struct evlist *evlist) |
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{ |
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struct evsel *evsel, *pos, *leader; |
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char buf[1024]; |
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if (evlist__has_hybrid(evlist)) |
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evlist__warn_hybrid_group(evlist); |
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evlist__for_each_entry(evlist, evsel) { |
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leader = evsel__leader(evsel); |
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|
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/* Check that leader matches cpus with each member. */ |
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if (leader == evsel) |
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continue; |
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if (cpus_map_matched(leader, evsel)) |
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continue; |
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|
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/* If there's mismatch disable the group and warn user. */ |
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WARN_ONCE(1, "WARNING: grouped events cpus do not match, disabling group:\n"); |
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evsel__group_desc(leader, buf, sizeof(buf)); |
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pr_warning(" %s\n", buf); |
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if (verbose) { |
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cpu_map__snprint(leader->core.cpus, buf, sizeof(buf)); |
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pr_warning(" %s: %s\n", leader->name, buf); |
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cpu_map__snprint(evsel->core.cpus, buf, sizeof(buf)); |
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pr_warning(" %s: %s\n", evsel->name, buf); |
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} |
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for_each_group_evsel(pos, leader) { |
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evsel__set_leader(pos, pos); |
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pos->core.nr_members = 0; |
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} |
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evsel->core.leader->nr_members = 0; |
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} |
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} |
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static inline void diff_timespec(struct timespec *r, struct timespec *a, |
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struct timespec *b) |
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{ |
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r->tv_sec = a->tv_sec - b->tv_sec; |
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if (a->tv_nsec < b->tv_nsec) { |
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r->tv_nsec = a->tv_nsec + NSEC_PER_SEC - b->tv_nsec; |
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r->tv_sec--; |
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} else { |
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r->tv_nsec = a->tv_nsec - b->tv_nsec ; |
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} |
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} |
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static void perf_stat__reset_stats(void) |
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{ |
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int i; |
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evlist__reset_stats(evsel_list); |
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perf_stat__reset_shadow_stats(); |
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for (i = 0; i < stat_config.stats_num; i++) |
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perf_stat__reset_shadow_per_stat(&stat_config.stats[i]); |
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} |
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static int process_synthesized_event(struct perf_tool *tool __maybe_unused, |
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union perf_event *event, |
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struct perf_sample *sample __maybe_unused, |
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struct machine *machine __maybe_unused) |
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{ |
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if (perf_data__write(&perf_stat.data, event, event->header.size) < 0) { |
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pr_err("failed to write perf data, error: %m\n"); |
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return -1; |
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} |
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perf_stat.bytes_written += event->header.size; |
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return 0; |
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} |
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static int write_stat_round_event(u64 tm, u64 type) |
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{ |
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return perf_event__synthesize_stat_round(NULL, tm, type, |
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process_synthesized_event, |
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NULL); |
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} |
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#define WRITE_STAT_ROUND_EVENT(time, interval) \ |
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write_stat_round_event(time, PERF_STAT_ROUND_TYPE__ ## interval) |
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#define SID(e, x, y) xyarray__entry(e->core.sample_id, x, y) |
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static int evsel__write_stat_event(struct evsel *counter, int cpu_map_idx, u32 thread, |
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struct perf_counts_values *count) |
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{ |
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struct perf_sample_id *sid = SID(counter, cpu_map_idx, thread); |
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struct perf_cpu cpu = perf_cpu_map__cpu(evsel__cpus(counter), cpu_map_idx); |
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return perf_event__synthesize_stat(NULL, cpu, thread, sid->id, count, |
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process_synthesized_event, NULL); |
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} |
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static int read_single_counter(struct evsel *counter, int cpu_map_idx, |
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int thread, struct timespec *rs) |
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{ |
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if (counter->tool_event == PERF_TOOL_DURATION_TIME) { |
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u64 val = rs->tv_nsec + rs->tv_sec*1000000000ULL; |
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struct perf_counts_values *count = |
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perf_counts(counter->counts, cpu_map_idx, thread); |
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count->ena = count->run = val; |
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count->val = val; |
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return 0; |
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} |
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return evsel__read_counter(counter, cpu_map_idx, thread); |
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} |
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/* |
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* Read out the results of a single counter: |
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* do not aggregate counts across CPUs in system-wide mode |
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*/ |
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static int read_counter_cpu(struct evsel *counter, struct timespec *rs, int cpu_map_idx) |
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{ |
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int nthreads = perf_thread_map__nr(evsel_list->core.threads); |
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int thread; |
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|
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if (!counter->supported) |
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return -ENOENT; |
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if (counter->core.system_wide) |
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nthreads = 1; |
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for (thread = 0; thread < nthreads; thread++) { |
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struct perf_counts_values *count; |
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count = perf_counts(counter->counts, cpu_map_idx, thread); |
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|
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/* |
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* The leader's group read loads data into its group members |
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* (via evsel__read_counter()) and sets their count->loaded. |
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*/ |
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if (!perf_counts__is_loaded(counter->counts, cpu_map_idx, thread) && |
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read_single_counter(counter, cpu_map_idx, thread, rs)) { |
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counter->counts->scaled = -1; |
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perf_counts(counter->counts, cpu_map_idx, thread)->ena = 0; |
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perf_counts(counter->counts, cpu_map_idx, thread)->run = 0; |
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return -1; |
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} |
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perf_counts__set_loaded(counter->counts, cpu_map_idx, thread, false); |
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if (STAT_RECORD) { |
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if (evsel__write_stat_event(counter, cpu_map_idx, thread, count)) { |
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pr_err("failed to write stat event\n"); |
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return -1; |
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} |
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} |
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if (verbose > 1) { |
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fprintf(stat_config.output, |
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"%s: %d: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n", |
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evsel__name(counter), |
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perf_cpu_map__cpu(evsel__cpus(counter), |
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cpu_map_idx).cpu, |
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count->val, count->ena, count->run); |
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} |
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} |
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return 0; |
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} |
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static int read_affinity_counters(struct timespec *rs) |
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{ |
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struct evlist_cpu_iterator evlist_cpu_itr; |
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struct affinity saved_affinity, *affinity; |
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|
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if (all_counters_use_bpf) |
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return 0; |
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|
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if (!target__has_cpu(&target) || target__has_per_thread(&target)) |
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affinity = NULL; |
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else if (affinity__setup(&saved_affinity) < 0) |
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return -1; |
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else |
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affinity = &saved_affinity; |
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evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { |
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struct evsel *counter = evlist_cpu_itr.evsel; |
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|
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if (evsel__is_bpf(counter)) |
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continue; |
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|
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if (!counter->err) { |
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counter->err = read_counter_cpu(counter, rs, |
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evlist_cpu_itr.cpu_map_idx); |
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} |
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} |
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if (affinity) |
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affinity__cleanup(&saved_affinity); |
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return 0; |
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} |
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|
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static int read_bpf_map_counters(void) |
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{ |
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struct evsel *counter; |
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int err; |
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|
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evlist__for_each_entry(evsel_list, counter) { |
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if (!evsel__is_bpf(counter)) |
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continue; |
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|
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err = bpf_counter__read(counter); |
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if (err) |
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return err; |
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} |
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return 0; |
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} |
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|
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static void read_counters(struct timespec *rs) |
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{ |
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struct evsel *counter; |
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|
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if (!stat_config.stop_read_counter) { |
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if (read_bpf_map_counters() || |
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read_affinity_counters(rs)) |
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return; |
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} |
|
|
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evlist__for_each_entry(evsel_list, counter) { |
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if (counter->err) |
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pr_debug("failed to read counter %s\n", counter->name); |
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if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter)) |
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pr_warning("failed to process counter %s\n", counter->name); |
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counter->err = 0; |
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} |
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} |
|
|
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static int runtime_stat_new(struct perf_stat_config *config, int nthreads) |
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{ |
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int i; |
|
|
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config->stats = calloc(nthreads, sizeof(struct runtime_stat)); |
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if (!config->stats) |
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return -1; |
|
|
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config->stats_num = nthreads; |
|
|
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for (i = 0; i < nthreads; i++) |
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runtime_stat__init(&config->stats[i]); |
|
|
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return 0; |
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} |
|
|
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static void runtime_stat_delete(struct perf_stat_config *config) |
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{ |
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int i; |
|
|
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if (!config->stats) |
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return; |
|
|
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for (i = 0; i < config->stats_num; i++) |
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runtime_stat__exit(&config->stats[i]); |
|
|
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zfree(&config->stats); |
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} |
|
|
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static void runtime_stat_reset(struct perf_stat_config *config) |
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{ |
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int i; |
|
|
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if (!config->stats) |
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return; |
|
|
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for (i = 0; i < config->stats_num; i++) |
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perf_stat__reset_shadow_per_stat(&config->stats[i]); |
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} |
|
|
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static void process_interval(void) |
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{ |
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struct timespec ts, rs; |
|
|
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clock_gettime(CLOCK_MONOTONIC, &ts); |
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diff_timespec(&rs, &ts, &ref_time); |
|
|
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perf_stat__reset_shadow_per_stat(&rt_stat); |
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runtime_stat_reset(&stat_config); |
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read_counters(&rs); |
|
|
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if (STAT_RECORD) { |
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if (WRITE_STAT_ROUND_EVENT(rs.tv_sec * NSEC_PER_SEC + rs.tv_nsec, INTERVAL)) |
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pr_err("failed to write stat round event\n"); |
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} |
|
|
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init_stats(&walltime_nsecs_stats); |
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update_stats(&walltime_nsecs_stats, stat_config.interval * 1000000ULL); |
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print_counters(&rs, 0, NULL); |
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} |
|
|
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static bool handle_interval(unsigned int interval, int *times) |
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{ |
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if (interval) { |
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process_interval(); |
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if (interval_count && !(--(*times))) |
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return true; |
|
} |
|
return false; |
|
} |
|
|
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static int enable_counters(void) |
|
{ |
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struct evsel *evsel; |
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int err; |
|
|
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evlist__for_each_entry(evsel_list, evsel) { |
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if (!evsel__is_bpf(evsel)) |
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continue; |
|
|
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err = bpf_counter__enable(evsel); |
|
if (err) |
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return err; |
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} |
|
|
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if (stat_config.initial_delay < 0) { |
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pr_info(EVLIST_DISABLED_MSG); |
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return 0; |
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} |
|
|
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if (stat_config.initial_delay > 0) { |
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pr_info(EVLIST_DISABLED_MSG); |
|
usleep(stat_config.initial_delay * USEC_PER_MSEC); |
|
} |
|
|
|
/* |
|
* We need to enable counters only if: |
|
* - we don't have tracee (attaching to task or cpu) |
|
* - we have initial delay configured |
|
*/ |
|
if (!target__none(&target) || stat_config.initial_delay) { |
|
if (!all_counters_use_bpf) |
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evlist__enable(evsel_list); |
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if (stat_config.initial_delay > 0) |
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pr_info(EVLIST_ENABLED_MSG); |
|
} |
|
return 0; |
|
} |
|
|
|
static void disable_counters(void) |
|
{ |
|
struct evsel *counter; |
|
|
|
/* |
|
* If we don't have tracee (attaching to task or cpu), counters may |
|
* still be running. To get accurate group ratios, we must stop groups |
|
* from counting before reading their constituent counters. |
|
*/ |
|
if (!target__none(&target)) { |
|
evlist__for_each_entry(evsel_list, counter) |
|
bpf_counter__disable(counter); |
|
if (!all_counters_use_bpf) |
|
evlist__disable(evsel_list); |
|
} |
|
} |
|
|
|
static volatile int workload_exec_errno; |
|
|
|
/* |
|
* evlist__prepare_workload will send a SIGUSR1 |
|
* if the fork fails, since we asked by setting its |
|
* want_signal to true. |
|
*/ |
|
static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *info, |
|
void *ucontext __maybe_unused) |
|
{ |
|
workload_exec_errno = info->si_value.sival_int; |
|
} |
|
|
|
static bool evsel__should_store_id(struct evsel *counter) |
|
{ |
|
return STAT_RECORD || counter->core.attr.read_format & PERF_FORMAT_ID; |
|
} |
|
|
|
static bool is_target_alive(struct target *_target, |
|
struct perf_thread_map *threads) |
|
{ |
|
struct stat st; |
|
int i; |
|
|
|
if (!target__has_task(_target)) |
|
return true; |
|
|
|
for (i = 0; i < threads->nr; i++) { |
|
char path[PATH_MAX]; |
|
|
|
scnprintf(path, PATH_MAX, "%s/%d", procfs__mountpoint(), |
|
threads->map[i].pid); |
|
|
|
if (!stat(path, &st)) |
|
return true; |
|
} |
|
|
|
return false; |
|
} |
|
|
|
static void process_evlist(struct evlist *evlist, unsigned int interval) |
|
{ |
|
enum evlist_ctl_cmd cmd = EVLIST_CTL_CMD_UNSUPPORTED; |
|
|
|
if (evlist__ctlfd_process(evlist, &cmd) > 0) { |
|
switch (cmd) { |
|
case EVLIST_CTL_CMD_ENABLE: |
|
if (interval) |
|
process_interval(); |
|
break; |
|
case EVLIST_CTL_CMD_DISABLE: |
|
if (interval) |
|
process_interval(); |
|
break; |
|
case EVLIST_CTL_CMD_SNAPSHOT: |
|
case EVLIST_CTL_CMD_ACK: |
|
case EVLIST_CTL_CMD_UNSUPPORTED: |
|
case EVLIST_CTL_CMD_EVLIST: |
|
case EVLIST_CTL_CMD_STOP: |
|
case EVLIST_CTL_CMD_PING: |
|
default: |
|
break; |
|
} |
|
} |
|
} |
|
|
|
static void compute_tts(struct timespec *time_start, struct timespec *time_stop, |
|
int *time_to_sleep) |
|
{ |
|
int tts = *time_to_sleep; |
|
struct timespec time_diff; |
|
|
|
diff_timespec(&time_diff, time_stop, time_start); |
|
|
|
tts -= time_diff.tv_sec * MSEC_PER_SEC + |
|
time_diff.tv_nsec / NSEC_PER_MSEC; |
|
|
|
if (tts < 0) |
|
tts = 0; |
|
|
|
*time_to_sleep = tts; |
|
} |
|
|
|
static int dispatch_events(bool forks, int timeout, int interval, int *times) |
|
{ |
|
int child_exited = 0, status = 0; |
|
int time_to_sleep, sleep_time; |
|
struct timespec time_start, time_stop; |
|
|
|
if (interval) |
|
sleep_time = interval; |
|
else if (timeout) |
|
sleep_time = timeout; |
|
else |
|
sleep_time = 1000; |
|
|
|
time_to_sleep = sleep_time; |
|
|
|
while (!done) { |
|
if (forks) |
|
child_exited = waitpid(child_pid, &status, WNOHANG); |
|
else |
|
child_exited = !is_target_alive(&target, evsel_list->core.threads) ? 1 : 0; |
|
|
|
if (child_exited) |
|
break; |
|
|
|
clock_gettime(CLOCK_MONOTONIC, &time_start); |
|
if (!(evlist__poll(evsel_list, time_to_sleep) > 0)) { /* poll timeout or EINTR */ |
|
if (timeout || handle_interval(interval, times)) |
|
break; |
|
time_to_sleep = sleep_time; |
|
} else { /* fd revent */ |
|
process_evlist(evsel_list, interval); |
|
clock_gettime(CLOCK_MONOTONIC, &time_stop); |
|
compute_tts(&time_start, &time_stop, &time_to_sleep); |
|
} |
|
} |
|
|
|
return status; |
|
} |
|
|
|
enum counter_recovery { |
|
COUNTER_SKIP, |
|
COUNTER_RETRY, |
|
COUNTER_FATAL, |
|
}; |
|
|
|
static enum counter_recovery stat_handle_error(struct evsel *counter) |
|
{ |
|
char msg[BUFSIZ]; |
|
/* |
|
* PPC returns ENXIO for HW counters until 2.6.37 |
|
* (behavior changed with commit b0a873e). |
|
*/ |
|
if (errno == EINVAL || errno == ENOSYS || |
|
errno == ENOENT || errno == EOPNOTSUPP || |
|
errno == ENXIO) { |
|
if (verbose > 0) |
|
ui__warning("%s event is not supported by the kernel.\n", |
|
evsel__name(counter)); |
|
counter->supported = false; |
|
/* |
|
* errored is a sticky flag that means one of the counter's |
|
* cpu event had a problem and needs to be reexamined. |
|
*/ |
|
counter->errored = true; |
|
|
|
if ((evsel__leader(counter) != counter) || |
|
!(counter->core.leader->nr_members > 1)) |
|
return COUNTER_SKIP; |
|
} else if (evsel__fallback(counter, errno, msg, sizeof(msg))) { |
|
if (verbose > 0) |
|
ui__warning("%s\n", msg); |
|
return COUNTER_RETRY; |
|
} else if (target__has_per_thread(&target) && |
|
evsel_list->core.threads && |
|
evsel_list->core.threads->err_thread != -1) { |
|
/* |
|
* For global --per-thread case, skip current |
|
* error thread. |
|
*/ |
|
if (!thread_map__remove(evsel_list->core.threads, |
|
evsel_list->core.threads->err_thread)) { |
|
evsel_list->core.threads->err_thread = -1; |
|
return COUNTER_RETRY; |
|
} |
|
} |
|
|
|
evsel__open_strerror(counter, &target, errno, msg, sizeof(msg)); |
|
ui__error("%s\n", msg); |
|
|
|
if (child_pid != -1) |
|
kill(child_pid, SIGTERM); |
|
return COUNTER_FATAL; |
|
} |
|
|
|
static int __run_perf_stat(int argc, const char **argv, int run_idx) |
|
{ |
|
int interval = stat_config.interval; |
|
int times = stat_config.times; |
|
int timeout = stat_config.timeout; |
|
char msg[BUFSIZ]; |
|
unsigned long long t0, t1; |
|
struct evsel *counter; |
|
size_t l; |
|
int status = 0; |
|
const bool forks = (argc > 0); |
|
bool is_pipe = STAT_RECORD ? perf_stat.data.is_pipe : false; |
|
struct evlist_cpu_iterator evlist_cpu_itr; |
|
struct affinity saved_affinity, *affinity = NULL; |
|
int err; |
|
bool second_pass = false; |
|
|
|
if (forks) { |
|
if (evlist__prepare_workload(evsel_list, &target, argv, is_pipe, workload_exec_failed_signal) < 0) { |
|
perror("failed to prepare workload"); |
|
return -1; |
|
} |
|
child_pid = evsel_list->workload.pid; |
|
} |
|
|
|
if (group) |
|
evlist__set_leader(evsel_list); |
|
|
|
if (!cpu_map__is_dummy(evsel_list->core.user_requested_cpus)) { |
|
if (affinity__setup(&saved_affinity) < 0) |
|
return -1; |
|
affinity = &saved_affinity; |
|
} |
|
|
|
evlist__for_each_entry(evsel_list, counter) { |
|
if (bpf_counter__load(counter, &target)) |
|
return -1; |
|
if (!evsel__is_bpf(counter)) |
|
all_counters_use_bpf = false; |
|
} |
|
|
|
evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { |
|
counter = evlist_cpu_itr.evsel; |
|
|
|
/* |
|
* bperf calls evsel__open_per_cpu() in bperf__load(), so |
|
* no need to call it again here. |
|
*/ |
|
if (target.use_bpf) |
|
break; |
|
|
|
if (counter->reset_group || counter->errored) |
|
continue; |
|
if (evsel__is_bpf(counter)) |
|
continue; |
|
try_again: |
|
if (create_perf_stat_counter(counter, &stat_config, &target, |
|
evlist_cpu_itr.cpu_map_idx) < 0) { |
|
|
|
/* |
|
* Weak group failed. We cannot just undo this here |
|
* because earlier CPUs might be in group mode, and the kernel |
|
* doesn't support mixing group and non group reads. Defer |
|
* it to later. |
|
* Don't close here because we're in the wrong affinity. |
|
*/ |
|
if ((errno == EINVAL || errno == EBADF) && |
|
evsel__leader(counter) != counter && |
|
counter->weak_group) { |
|
evlist__reset_weak_group(evsel_list, counter, false); |
|
assert(counter->reset_group); |
|
second_pass = true; |
|
continue; |
|
} |
|
|
|
switch (stat_handle_error(counter)) { |
|
case COUNTER_FATAL: |
|
return -1; |
|
case COUNTER_RETRY: |
|
goto try_again; |
|
case COUNTER_SKIP: |
|
continue; |
|
default: |
|
break; |
|
} |
|
|
|
} |
|
counter->supported = true; |
|
} |
|
|
|
if (second_pass) { |
|
/* |
|
* Now redo all the weak group after closing them, |
|
* and also close errored counters. |
|
*/ |
|
|
|
/* First close errored or weak retry */ |
|
evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { |
|
counter = evlist_cpu_itr.evsel; |
|
|
|
if (!counter->reset_group && !counter->errored) |
|
continue; |
|
|
|
perf_evsel__close_cpu(&counter->core, evlist_cpu_itr.cpu_map_idx); |
|
} |
|
/* Now reopen weak */ |
|
evlist__for_each_cpu(evlist_cpu_itr, evsel_list, affinity) { |
|
counter = evlist_cpu_itr.evsel; |
|
|
|
if (!counter->reset_group && !counter->errored) |
|
continue; |
|
if (!counter->reset_group) |
|
continue; |
|
try_again_reset: |
|
pr_debug2("reopening weak %s\n", evsel__name(counter)); |
|
if (create_perf_stat_counter(counter, &stat_config, &target, |
|
evlist_cpu_itr.cpu_map_idx) < 0) { |
|
|
|
switch (stat_handle_error(counter)) { |
|
case COUNTER_FATAL: |
|
return -1; |
|
case COUNTER_RETRY: |
|
goto try_again_reset; |
|
case COUNTER_SKIP: |
|
continue; |
|
default: |
|
break; |
|
} |
|
} |
|
counter->supported = true; |
|
} |
|
} |
|
affinity__cleanup(affinity); |
|
|
|
evlist__for_each_entry(evsel_list, counter) { |
|
if (!counter->supported) { |
|
perf_evsel__free_fd(&counter->core); |
|
continue; |
|
} |
|
|
|
l = strlen(counter->unit); |
|
if (l > stat_config.unit_width) |
|
stat_config.unit_width = l; |
|
|
|
if (evsel__should_store_id(counter) && |
|
evsel__store_ids(counter, evsel_list)) |
|
return -1; |
|
} |
|
|
|
if (evlist__apply_filters(evsel_list, &counter)) { |
|
pr_err("failed to set filter \"%s\" on event %s with %d (%s)\n", |
|
counter->filter, evsel__name(counter), errno, |
|
str_error_r(errno, msg, sizeof(msg))); |
|
return -1; |
|
} |
|
|
|
if (STAT_RECORD) { |
|
int fd = perf_data__fd(&perf_stat.data); |
|
|
|
if (is_pipe) { |
|
err = perf_header__write_pipe(perf_data__fd(&perf_stat.data)); |
|
} else { |
|
err = perf_session__write_header(perf_stat.session, evsel_list, |
|
fd, false); |
|
} |
|
|
|
if (err < 0) |
|
return err; |
|
|
|
err = perf_event__synthesize_stat_events(&stat_config, NULL, evsel_list, |
|
process_synthesized_event, is_pipe); |
|
if (err < 0) |
|
return err; |
|
} |
|
|
|
/* |
|
* Enable counters and exec the command: |
|
*/ |
|
if (forks) { |
|
err = enable_counters(); |
|
if (err) |
|
return -1; |
|
evlist__start_workload(evsel_list); |
|
|
|
t0 = rdclock(); |
|
clock_gettime(CLOCK_MONOTONIC, &ref_time); |
|
|
|
if (interval || timeout || evlist__ctlfd_initialized(evsel_list)) |
|
status = dispatch_events(forks, timeout, interval, ×); |
|
if (child_pid != -1) { |
|
if (timeout) |
|
kill(child_pid, SIGTERM); |
|
wait4(child_pid, &status, 0, &stat_config.ru_data); |
|
} |
|
|
|
if (workload_exec_errno) { |
|
const char *emsg = str_error_r(workload_exec_errno, msg, sizeof(msg)); |
|
pr_err("Workload failed: %s\n", emsg); |
|
return -1; |
|
} |
|
|
|
if (WIFSIGNALED(status)) |
|
psignal(WTERMSIG(status), argv[0]); |
|
} else { |
|
err = enable_counters(); |
|
if (err) |
|
return -1; |
|
|
|
t0 = rdclock(); |
|
clock_gettime(CLOCK_MONOTONIC, &ref_time); |
|
|
|
status = dispatch_events(forks, timeout, interval, ×); |
|
} |
|
|
|
disable_counters(); |
|
|
|
t1 = rdclock(); |
|
|
|
if (stat_config.walltime_run_table) |
|
stat_config.walltime_run[run_idx] = t1 - t0; |
|
|
|
if (interval && stat_config.summary) { |
|
stat_config.interval = 0; |
|
stat_config.stop_read_counter = true; |
|
init_stats(&walltime_nsecs_stats); |
|
update_stats(&walltime_nsecs_stats, t1 - t0); |
|
|
|
if (stat_config.aggr_mode == AGGR_GLOBAL) |
|
evlist__save_aggr_prev_raw_counts(evsel_list); |
|
|
|
evlist__copy_prev_raw_counts(evsel_list); |
|
evlist__reset_prev_raw_counts(evsel_list); |
|
runtime_stat_reset(&stat_config); |
|
perf_stat__reset_shadow_per_stat(&rt_stat); |
|
} else |
|
update_stats(&walltime_nsecs_stats, t1 - t0); |
|
|
|
/* |
|
* Closing a group leader splits the group, and as we only disable |
|
* group leaders, results in remaining events becoming enabled. To |
|
* avoid arbitrary skew, we must read all counters before closing any |
|
* group leaders. |
|
*/ |
|
read_counters(&(struct timespec) { .tv_nsec = t1-t0 }); |
|
|
|
/* |
|
* We need to keep evsel_list alive, because it's processed |
|
* later the evsel_list will be closed after. |
|
*/ |
|
if (!STAT_RECORD) |
|
evlist__close(evsel_list); |
|
|
|
return WEXITSTATUS(status); |
|
} |
|
|
|
static int run_perf_stat(int argc, const char **argv, int run_idx) |
|
{ |
|
int ret; |
|
|
|
if (pre_cmd) { |
|
ret = system(pre_cmd); |
|
if (ret) |
|
return ret; |
|
} |
|
|
|
if (sync_run) |
|
sync(); |
|
|
|
ret = __run_perf_stat(argc, argv, run_idx); |
|
if (ret) |
|
return ret; |
|
|
|
if (post_cmd) { |
|
ret = system(post_cmd); |
|
if (ret) |
|
return ret; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
static void print_counters(struct timespec *ts, int argc, const char **argv) |
|
{ |
|
/* Do not print anything if we record to the pipe. */ |
|
if (STAT_RECORD && perf_stat.data.is_pipe) |
|
return; |
|
if (stat_config.quiet) |
|
return; |
|
|
|
evlist__print_counters(evsel_list, &stat_config, &target, ts, argc, argv); |
|
} |
|
|
|
static volatile int signr = -1; |
|
|
|
static void skip_signal(int signo) |
|
{ |
|
if ((child_pid == -1) || stat_config.interval) |
|
done = 1; |
|
|
|
signr = signo; |
|
/* |
|
* render child_pid harmless |
|
* won't send SIGTERM to a random |
|
* process in case of race condition |
|
* and fast PID recycling |
|
*/ |
|
child_pid = -1; |
|
} |
|
|
|
static void sig_atexit(void) |
|
{ |
|
sigset_t set, oset; |
|
|
|
/* |
|
* avoid race condition with SIGCHLD handler |
|
* in skip_signal() which is modifying child_pid |
|
* goal is to avoid send SIGTERM to a random |
|
* process |
|
*/ |
|
sigemptyset(&set); |
|
sigaddset(&set, SIGCHLD); |
|
sigprocmask(SIG_BLOCK, &set, &oset); |
|
|
|
if (child_pid != -1) |
|
kill(child_pid, SIGTERM); |
|
|
|
sigprocmask(SIG_SETMASK, &oset, NULL); |
|
|
|
if (signr == -1) |
|
return; |
|
|
|
signal(signr, SIG_DFL); |
|
kill(getpid(), signr); |
|
} |
|
|
|
void perf_stat__set_big_num(int set) |
|
{ |
|
stat_config.big_num = (set != 0); |
|
} |
|
|
|
void perf_stat__set_no_csv_summary(int set) |
|
{ |
|
stat_config.no_csv_summary = (set != 0); |
|
} |
|
|
|
static int stat__set_big_num(const struct option *opt __maybe_unused, |
|
const char *s __maybe_unused, int unset) |
|
{ |
|
big_num_opt = unset ? 0 : 1; |
|
perf_stat__set_big_num(!unset); |
|
return 0; |
|
} |
|
|
|
static int enable_metric_only(const struct option *opt __maybe_unused, |
|
const char *s __maybe_unused, int unset) |
|
{ |
|
force_metric_only = true; |
|
stat_config.metric_only = !unset; |
|
return 0; |
|
} |
|
|
|
static int parse_metric_groups(const struct option *opt, |
|
const char *str, |
|
int unset __maybe_unused) |
|
{ |
|
return metricgroup__parse_groups(opt, str, |
|
stat_config.metric_no_group, |
|
stat_config.metric_no_merge, |
|
&stat_config.metric_events); |
|
} |
|
|
|
static int parse_control_option(const struct option *opt, |
|
const char *str, |
|
int unset __maybe_unused) |
|
{ |
|
struct perf_stat_config *config = opt->value; |
|
|
|
return evlist__parse_control(str, &config->ctl_fd, &config->ctl_fd_ack, &config->ctl_fd_close); |
|
} |
|
|
|
static int parse_stat_cgroups(const struct option *opt, |
|
const char *str, int unset) |
|
{ |
|
if (stat_config.cgroup_list) { |
|
pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); |
|
return -1; |
|
} |
|
|
|
return parse_cgroups(opt, str, unset); |
|
} |
|
|
|
static int parse_hybrid_type(const struct option *opt, |
|
const char *str, |
|
int unset __maybe_unused) |
|
{ |
|
struct evlist *evlist = *(struct evlist **)opt->value; |
|
|
|
if (!list_empty(&evlist->core.entries)) { |
|
fprintf(stderr, "Must define cputype before events/metrics\n"); |
|
return -1; |
|
} |
|
|
|
evlist->hybrid_pmu_name = perf_pmu__hybrid_type_to_pmu(str); |
|
if (!evlist->hybrid_pmu_name) { |
|
fprintf(stderr, "--cputype %s is not supported!\n", str); |
|
return -1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static struct option stat_options[] = { |
|
OPT_BOOLEAN('T', "transaction", &transaction_run, |
|
"hardware transaction statistics"), |
|
OPT_CALLBACK('e', "event", &evsel_list, "event", |
|
"event selector. use 'perf list' to list available events", |
|
parse_events_option), |
|
OPT_CALLBACK(0, "filter", &evsel_list, "filter", |
|
"event filter", parse_filter), |
|
OPT_BOOLEAN('i', "no-inherit", &stat_config.no_inherit, |
|
"child tasks do not inherit counters"), |
|
OPT_STRING('p', "pid", &target.pid, "pid", |
|
"stat events on existing process id"), |
|
OPT_STRING('t', "tid", &target.tid, "tid", |
|
"stat events on existing thread id"), |
|
#ifdef HAVE_BPF_SKEL |
|
OPT_STRING('b', "bpf-prog", &target.bpf_str, "bpf-prog-id", |
|
"stat events on existing bpf program id"), |
|
OPT_BOOLEAN(0, "bpf-counters", &target.use_bpf, |
|
"use bpf program to count events"), |
|
OPT_STRING(0, "bpf-attr-map", &target.attr_map, "attr-map-path", |
|
"path to perf_event_attr map"), |
|
#endif |
|
OPT_BOOLEAN('a', "all-cpus", &target.system_wide, |
|
"system-wide collection from all CPUs"), |
|
OPT_BOOLEAN('g', "group", &group, |
|
"put the counters into a counter group"), |
|
OPT_BOOLEAN(0, "scale", &stat_config.scale, |
|
"Use --no-scale to disable counter scaling for multiplexing"), |
|
OPT_INCR('v', "verbose", &verbose, |
|
"be more verbose (show counter open errors, etc)"), |
|
OPT_INTEGER('r', "repeat", &stat_config.run_count, |
|
"repeat command and print average + stddev (max: 100, forever: 0)"), |
|
OPT_BOOLEAN(0, "table", &stat_config.walltime_run_table, |
|
"display details about each run (only with -r option)"), |
|
OPT_BOOLEAN('n', "null", &stat_config.null_run, |
|
"null run - dont start any counters"), |
|
OPT_INCR('d', "detailed", &detailed_run, |
|
"detailed run - start a lot of events"), |
|
OPT_BOOLEAN('S', "sync", &sync_run, |
|
"call sync() before starting a run"), |
|
OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL, |
|
"print large numbers with thousands\' separators", |
|
stat__set_big_num), |
|
OPT_STRING('C', "cpu", &target.cpu_list, "cpu", |
|
"list of cpus to monitor in system-wide"), |
|
OPT_SET_UINT('A', "no-aggr", &stat_config.aggr_mode, |
|
"disable CPU count aggregation", AGGR_NONE), |
|
OPT_BOOLEAN(0, "no-merge", &stat_config.no_merge, "Do not merge identical named events"), |
|
OPT_STRING('x', "field-separator", &stat_config.csv_sep, "separator", |
|
"print counts with custom separator"), |
|
OPT_CALLBACK('G', "cgroup", &evsel_list, "name", |
|
"monitor event in cgroup name only", parse_stat_cgroups), |
|
OPT_STRING(0, "for-each-cgroup", &stat_config.cgroup_list, "name", |
|
"expand events for each cgroup"), |
|
OPT_STRING('o', "output", &output_name, "file", "output file name"), |
|
OPT_BOOLEAN(0, "append", &append_file, "append to the output file"), |
|
OPT_INTEGER(0, "log-fd", &output_fd, |
|
"log output to fd, instead of stderr"), |
|
OPT_STRING(0, "pre", &pre_cmd, "command", |
|
"command to run prior to the measured command"), |
|
OPT_STRING(0, "post", &post_cmd, "command", |
|
"command to run after to the measured command"), |
|
OPT_UINTEGER('I', "interval-print", &stat_config.interval, |
|
"print counts at regular interval in ms " |
|
"(overhead is possible for values <= 100ms)"), |
|
OPT_INTEGER(0, "interval-count", &stat_config.times, |
|
"print counts for fixed number of times"), |
|
OPT_BOOLEAN(0, "interval-clear", &stat_config.interval_clear, |
|
"clear screen in between new interval"), |
|
OPT_UINTEGER(0, "timeout", &stat_config.timeout, |
|
"stop workload and print counts after a timeout period in ms (>= 10ms)"), |
|
OPT_SET_UINT(0, "per-socket", &stat_config.aggr_mode, |
|
"aggregate counts per processor socket", AGGR_SOCKET), |
|
OPT_SET_UINT(0, "per-die", &stat_config.aggr_mode, |
|
"aggregate counts per processor die", AGGR_DIE), |
|
OPT_SET_UINT(0, "per-core", &stat_config.aggr_mode, |
|
"aggregate counts per physical processor core", AGGR_CORE), |
|
OPT_SET_UINT(0, "per-thread", &stat_config.aggr_mode, |
|
"aggregate counts per thread", AGGR_THREAD), |
|
OPT_SET_UINT(0, "per-node", &stat_config.aggr_mode, |
|
"aggregate counts per numa node", AGGR_NODE), |
|
OPT_INTEGER('D', "delay", &stat_config.initial_delay, |
|
"ms to wait before starting measurement after program start (-1: start with events disabled)"), |
|
OPT_CALLBACK_NOOPT(0, "metric-only", &stat_config.metric_only, NULL, |
|
"Only print computed metrics. No raw values", enable_metric_only), |
|
OPT_BOOLEAN(0, "metric-no-group", &stat_config.metric_no_group, |
|
"don't group metric events, impacts multiplexing"), |
|
OPT_BOOLEAN(0, "metric-no-merge", &stat_config.metric_no_merge, |
|
"don't try to share events between metrics in a group"), |
|
OPT_BOOLEAN(0, "topdown", &topdown_run, |
|
"measure top-down statistics"), |
|
OPT_UINTEGER(0, "td-level", &stat_config.topdown_level, |
|
"Set the metrics level for the top-down statistics (0: max level)"), |
|
OPT_BOOLEAN(0, "smi-cost", &smi_cost, |
|
"measure SMI cost"), |
|
OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list", |
|
"monitor specified metrics or metric groups (separated by ,)", |
|
parse_metric_groups), |
|
OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel, |
|
"Configure all used events to run in kernel space.", |
|
PARSE_OPT_EXCLUSIVE), |
|
OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user, |
|
"Configure all used events to run in user space.", |
|
PARSE_OPT_EXCLUSIVE), |
|
OPT_BOOLEAN(0, "percore-show-thread", &stat_config.percore_show_thread, |
|
"Use with 'percore' event qualifier to show the event " |
|
"counts of one hardware thread by sum up total hardware " |
|
"threads of same physical core"), |
|
OPT_BOOLEAN(0, "summary", &stat_config.summary, |
|
"print summary for interval mode"), |
|
OPT_BOOLEAN(0, "no-csv-summary", &stat_config.no_csv_summary, |
|
"don't print 'summary' for CSV summary output"), |
|
OPT_BOOLEAN(0, "quiet", &stat_config.quiet, |
|
"don't print output (useful with record)"), |
|
OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type", |
|
"Only enable events on applying cpu with this type " |
|
"for hybrid platform (e.g. core or atom)", |
|
parse_hybrid_type), |
|
#ifdef HAVE_LIBPFM |
|
OPT_CALLBACK(0, "pfm-events", &evsel_list, "event", |
|
"libpfm4 event selector. use 'perf list' to list available events", |
|
parse_libpfm_events_option), |
|
#endif |
|
OPT_CALLBACK(0, "control", &stat_config, "fd:ctl-fd[,ack-fd] or fifo:ctl-fifo[,ack-fifo]", |
|
"Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, 'disable': disable events).\n" |
|
"\t\t\t Optionally send control command completion ('ack\\n') to ack-fd descriptor.\n" |
|
"\t\t\t Alternatively, ctl-fifo / ack-fifo will be opened and used as ctl-fd / ack-fd.", |
|
parse_control_option), |
|
OPT_CALLBACK_OPTARG(0, "iostat", &evsel_list, &stat_config, "default", |
|
"measure I/O performance metrics provided by arch/platform", |
|
iostat_parse), |
|
OPT_END() |
|
}; |
|
|
|
static const char *const aggr_mode__string[] = { |
|
[AGGR_CORE] = "core", |
|
[AGGR_DIE] = "die", |
|
[AGGR_GLOBAL] = "global", |
|
[AGGR_NODE] = "node", |
|
[AGGR_NONE] = "none", |
|
[AGGR_SOCKET] = "socket", |
|
[AGGR_THREAD] = "thread", |
|
[AGGR_UNSET] = "unset", |
|
}; |
|
|
|
static struct aggr_cpu_id perf_stat__get_socket(struct perf_stat_config *config __maybe_unused, |
|
struct perf_cpu cpu) |
|
{ |
|
return aggr_cpu_id__socket(cpu, /*data=*/NULL); |
|
} |
|
|
|
static struct aggr_cpu_id perf_stat__get_die(struct perf_stat_config *config __maybe_unused, |
|
struct perf_cpu cpu) |
|
{ |
|
return aggr_cpu_id__die(cpu, /*data=*/NULL); |
|
} |
|
|
|
static struct aggr_cpu_id perf_stat__get_core(struct perf_stat_config *config __maybe_unused, |
|
struct perf_cpu cpu) |
|
{ |
|
return aggr_cpu_id__core(cpu, /*data=*/NULL); |
|
} |
|
|
|
static struct aggr_cpu_id perf_stat__get_node(struct perf_stat_config *config __maybe_unused, |
|
struct perf_cpu cpu) |
|
{ |
|
return aggr_cpu_id__node(cpu, /*data=*/NULL); |
|
} |
|
|
|
static struct aggr_cpu_id perf_stat__get_aggr(struct perf_stat_config *config, |
|
aggr_get_id_t get_id, struct perf_cpu cpu) |
|
{ |
|
struct aggr_cpu_id id = aggr_cpu_id__empty(); |
|
|
|
if (aggr_cpu_id__is_empty(&config->cpus_aggr_map->map[cpu.cpu])) |
|
config->cpus_aggr_map->map[cpu.cpu] = get_id(config, cpu); |
|
|
|
id = config->cpus_aggr_map->map[cpu.cpu]; |
|
return id; |
|
} |
|
|
|
static struct aggr_cpu_id perf_stat__get_socket_cached(struct perf_stat_config *config, |
|
struct perf_cpu cpu) |
|
{ |
|
return perf_stat__get_aggr(config, perf_stat__get_socket, cpu); |
|
} |
|
|
|
static struct aggr_cpu_id perf_stat__get_die_cached(struct perf_stat_config *config, |
|
struct perf_cpu cpu) |
|
{ |
|
return perf_stat__get_aggr(config, perf_stat__get_die, cpu); |
|
} |
|
|
|
static struct aggr_cpu_id perf_stat__get_core_cached(struct perf_stat_config *config, |
|
struct perf_cpu cpu) |
|
{ |
|
return perf_stat__get_aggr(config, perf_stat__get_core, cpu); |
|
} |
|
|
|
static struct aggr_cpu_id perf_stat__get_node_cached(struct perf_stat_config *config, |
|
struct perf_cpu cpu) |
|
{ |
|
return perf_stat__get_aggr(config, perf_stat__get_node, cpu); |
|
} |
|
|
|
static bool term_percore_set(void) |
|
{ |
|
struct evsel *counter; |
|
|
|
evlist__for_each_entry(evsel_list, counter) { |
|
if (counter->percore) |
|
return true; |
|
} |
|
|
|
return false; |
|
} |
|
|
|
static aggr_cpu_id_get_t aggr_mode__get_aggr(enum aggr_mode aggr_mode) |
|
{ |
|
switch (aggr_mode) { |
|
case AGGR_SOCKET: |
|
return aggr_cpu_id__socket; |
|
case AGGR_DIE: |
|
return aggr_cpu_id__die; |
|
case AGGR_CORE: |
|
return aggr_cpu_id__core; |
|
case AGGR_NODE: |
|
return aggr_cpu_id__node; |
|
case AGGR_NONE: |
|
if (term_percore_set()) |
|
return aggr_cpu_id__core; |
|
|
|
return NULL; |
|
case AGGR_GLOBAL: |
|
case AGGR_THREAD: |
|
case AGGR_UNSET: |
|
default: |
|
return NULL; |
|
} |
|
} |
|
|
|
static aggr_get_id_t aggr_mode__get_id(enum aggr_mode aggr_mode) |
|
{ |
|
switch (aggr_mode) { |
|
case AGGR_SOCKET: |
|
return perf_stat__get_socket_cached; |
|
case AGGR_DIE: |
|
return perf_stat__get_die_cached; |
|
case AGGR_CORE: |
|
return perf_stat__get_core_cached; |
|
case AGGR_NODE: |
|
return perf_stat__get_node_cached; |
|
case AGGR_NONE: |
|
if (term_percore_set()) { |
|
return perf_stat__get_core_cached; |
|
} |
|
return NULL; |
|
case AGGR_GLOBAL: |
|
case AGGR_THREAD: |
|
case AGGR_UNSET: |
|
default: |
|
return NULL; |
|
} |
|
} |
|
|
|
static int perf_stat_init_aggr_mode(void) |
|
{ |
|
int nr; |
|
aggr_cpu_id_get_t get_id = aggr_mode__get_aggr(stat_config.aggr_mode); |
|
|
|
if (get_id) { |
|
stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus, |
|
get_id, /*data=*/NULL); |
|
if (!stat_config.aggr_map) { |
|
pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]); |
|
return -1; |
|
} |
|
stat_config.aggr_get_id = aggr_mode__get_id(stat_config.aggr_mode); |
|
} |
|
|
|
/* |
|
* The evsel_list->cpus is the base we operate on, |
|
* taking the highest cpu number to be the size of |
|
* the aggregation translate cpumap. |
|
*/ |
|
if (evsel_list->core.user_requested_cpus) |
|
nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu; |
|
else |
|
nr = 0; |
|
stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1); |
|
return stat_config.cpus_aggr_map ? 0 : -ENOMEM; |
|
} |
|
|
|
static void cpu_aggr_map__delete(struct cpu_aggr_map *map) |
|
{ |
|
if (map) { |
|
WARN_ONCE(refcount_read(&map->refcnt) != 0, |
|
"cpu_aggr_map refcnt unbalanced\n"); |
|
free(map); |
|
} |
|
} |
|
|
|
static void cpu_aggr_map__put(struct cpu_aggr_map *map) |
|
{ |
|
if (map && refcount_dec_and_test(&map->refcnt)) |
|
cpu_aggr_map__delete(map); |
|
} |
|
|
|
static void perf_stat__exit_aggr_mode(void) |
|
{ |
|
cpu_aggr_map__put(stat_config.aggr_map); |
|
cpu_aggr_map__put(stat_config.cpus_aggr_map); |
|
stat_config.aggr_map = NULL; |
|
stat_config.cpus_aggr_map = NULL; |
|
} |
|
|
|
static struct aggr_cpu_id perf_env__get_socket_aggr_by_cpu(struct perf_cpu cpu, void *data) |
|
{ |
|
struct perf_env *env = data; |
|
struct aggr_cpu_id id = aggr_cpu_id__empty(); |
|
|
|
if (cpu.cpu != -1) |
|
id.socket = env->cpu[cpu.cpu].socket_id; |
|
|
|
return id; |
|
} |
|
|
|
static struct aggr_cpu_id perf_env__get_die_aggr_by_cpu(struct perf_cpu cpu, void *data) |
|
{ |
|
struct perf_env *env = data; |
|
struct aggr_cpu_id id = aggr_cpu_id__empty(); |
|
|
|
if (cpu.cpu != -1) { |
|
/* |
|
* die_id is relative to socket, so start |
|
* with the socket ID and then add die to |
|
* make a unique ID. |
|
*/ |
|
id.socket = env->cpu[cpu.cpu].socket_id; |
|
id.die = env->cpu[cpu.cpu].die_id; |
|
} |
|
|
|
return id; |
|
} |
|
|
|
static struct aggr_cpu_id perf_env__get_core_aggr_by_cpu(struct perf_cpu cpu, void *data) |
|
{ |
|
struct perf_env *env = data; |
|
struct aggr_cpu_id id = aggr_cpu_id__empty(); |
|
|
|
if (cpu.cpu != -1) { |
|
/* |
|
* core_id is relative to socket and die, |
|
* we need a global id. So we set |
|
* socket, die id and core id |
|
*/ |
|
id.socket = env->cpu[cpu.cpu].socket_id; |
|
id.die = env->cpu[cpu.cpu].die_id; |
|
id.core = env->cpu[cpu.cpu].core_id; |
|
} |
|
|
|
return id; |
|
} |
|
|
|
static struct aggr_cpu_id perf_env__get_node_aggr_by_cpu(struct perf_cpu cpu, void *data) |
|
{ |
|
struct aggr_cpu_id id = aggr_cpu_id__empty(); |
|
|
|
id.node = perf_env__numa_node(data, cpu); |
|
return id; |
|
} |
|
|
|
static struct aggr_cpu_id perf_stat__get_socket_file(struct perf_stat_config *config __maybe_unused, |
|
struct perf_cpu cpu) |
|
{ |
|
return perf_env__get_socket_aggr_by_cpu(cpu, &perf_stat.session->header.env); |
|
} |
|
static struct aggr_cpu_id perf_stat__get_die_file(struct perf_stat_config *config __maybe_unused, |
|
struct perf_cpu cpu) |
|
{ |
|
return perf_env__get_die_aggr_by_cpu(cpu, &perf_stat.session->header.env); |
|
} |
|
|
|
static struct aggr_cpu_id perf_stat__get_core_file(struct perf_stat_config *config __maybe_unused, |
|
struct perf_cpu cpu) |
|
{ |
|
return perf_env__get_core_aggr_by_cpu(cpu, &perf_stat.session->header.env); |
|
} |
|
|
|
static struct aggr_cpu_id perf_stat__get_node_file(struct perf_stat_config *config __maybe_unused, |
|
struct perf_cpu cpu) |
|
{ |
|
return perf_env__get_node_aggr_by_cpu(cpu, &perf_stat.session->header.env); |
|
} |
|
|
|
static aggr_cpu_id_get_t aggr_mode__get_aggr_file(enum aggr_mode aggr_mode) |
|
{ |
|
switch (aggr_mode) { |
|
case AGGR_SOCKET: |
|
return perf_env__get_socket_aggr_by_cpu; |
|
case AGGR_DIE: |
|
return perf_env__get_die_aggr_by_cpu; |
|
case AGGR_CORE: |
|
return perf_env__get_core_aggr_by_cpu; |
|
case AGGR_NODE: |
|
return perf_env__get_node_aggr_by_cpu; |
|
case AGGR_NONE: |
|
case AGGR_GLOBAL: |
|
case AGGR_THREAD: |
|
case AGGR_UNSET: |
|
default: |
|
return NULL; |
|
} |
|
} |
|
|
|
static aggr_get_id_t aggr_mode__get_id_file(enum aggr_mode aggr_mode) |
|
{ |
|
switch (aggr_mode) { |
|
case AGGR_SOCKET: |
|
return perf_stat__get_socket_file; |
|
case AGGR_DIE: |
|
return perf_stat__get_die_file; |
|
case AGGR_CORE: |
|
return perf_stat__get_core_file; |
|
case AGGR_NODE: |
|
return perf_stat__get_node_file; |
|
case AGGR_NONE: |
|
case AGGR_GLOBAL: |
|
case AGGR_THREAD: |
|
case AGGR_UNSET: |
|
default: |
|
return NULL; |
|
} |
|
} |
|
|
|
static int perf_stat_init_aggr_mode_file(struct perf_stat *st) |
|
{ |
|
struct perf_env *env = &st->session->header.env; |
|
aggr_cpu_id_get_t get_id = aggr_mode__get_aggr_file(stat_config.aggr_mode); |
|
|
|
if (!get_id) |
|
return 0; |
|
|
|
stat_config.aggr_map = cpu_aggr_map__new(evsel_list->core.user_requested_cpus, get_id, env); |
|
if (!stat_config.aggr_map) { |
|
pr_err("cannot build %s map", aggr_mode__string[stat_config.aggr_mode]); |
|
return -1; |
|
} |
|
stat_config.aggr_get_id = aggr_mode__get_id_file(stat_config.aggr_mode); |
|
return 0; |
|
} |
|
|
|
/* |
|
* Add default attributes, if there were no attributes specified or |
|
* if -d/--detailed, -d -d or -d -d -d is used: |
|
*/ |
|
static int add_default_attributes(void) |
|
{ |
|
int err; |
|
struct perf_event_attr default_attrs0[] = { |
|
|
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, |
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, |
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, |
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, |
|
|
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES }, |
|
}; |
|
struct perf_event_attr frontend_attrs[] = { |
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND }, |
|
}; |
|
struct perf_event_attr backend_attrs[] = { |
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND }, |
|
}; |
|
struct perf_event_attr default_attrs1[] = { |
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS }, |
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS }, |
|
{ .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES }, |
|
|
|
}; |
|
struct perf_event_attr default_sw_attrs[] = { |
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK }, |
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES }, |
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS }, |
|
{ .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS }, |
|
}; |
|
|
|
/* |
|
* Detailed stats (-d), covering the L1 and last level data caches: |
|
*/ |
|
struct perf_event_attr detailed_attrs[] = { |
|
|
|
{ .type = PERF_TYPE_HW_CACHE, |
|
.config = |
|
PERF_COUNT_HW_CACHE_L1D << 0 | |
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) | |
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, |
|
|
|
{ .type = PERF_TYPE_HW_CACHE, |
|
.config = |
|
PERF_COUNT_HW_CACHE_L1D << 0 | |
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) | |
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, |
|
|
|
{ .type = PERF_TYPE_HW_CACHE, |
|
.config = |
|
PERF_COUNT_HW_CACHE_LL << 0 | |
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) | |
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, |
|
|
|
{ .type = PERF_TYPE_HW_CACHE, |
|
.config = |
|
PERF_COUNT_HW_CACHE_LL << 0 | |
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) | |
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, |
|
}; |
|
|
|
/* |
|
* Very detailed stats (-d -d), covering the instruction cache and the TLB caches: |
|
*/ |
|
struct perf_event_attr very_detailed_attrs[] = { |
|
|
|
{ .type = PERF_TYPE_HW_CACHE, |
|
.config = |
|
PERF_COUNT_HW_CACHE_L1I << 0 | |
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) | |
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, |
|
|
|
{ .type = PERF_TYPE_HW_CACHE, |
|
.config = |
|
PERF_COUNT_HW_CACHE_L1I << 0 | |
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) | |
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, |
|
|
|
{ .type = PERF_TYPE_HW_CACHE, |
|
.config = |
|
PERF_COUNT_HW_CACHE_DTLB << 0 | |
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) | |
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, |
|
|
|
{ .type = PERF_TYPE_HW_CACHE, |
|
.config = |
|
PERF_COUNT_HW_CACHE_DTLB << 0 | |
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) | |
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, |
|
|
|
{ .type = PERF_TYPE_HW_CACHE, |
|
.config = |
|
PERF_COUNT_HW_CACHE_ITLB << 0 | |
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) | |
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, |
|
|
|
{ .type = PERF_TYPE_HW_CACHE, |
|
.config = |
|
PERF_COUNT_HW_CACHE_ITLB << 0 | |
|
(PERF_COUNT_HW_CACHE_OP_READ << 8) | |
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, |
|
|
|
}; |
|
|
|
/* |
|
* Very, very detailed stats (-d -d -d), adding prefetch events: |
|
*/ |
|
struct perf_event_attr very_very_detailed_attrs[] = { |
|
|
|
{ .type = PERF_TYPE_HW_CACHE, |
|
.config = |
|
PERF_COUNT_HW_CACHE_L1D << 0 | |
|
(PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | |
|
(PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) }, |
|
|
|
{ .type = PERF_TYPE_HW_CACHE, |
|
.config = |
|
PERF_COUNT_HW_CACHE_L1D << 0 | |
|
(PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) | |
|
(PERF_COUNT_HW_CACHE_RESULT_MISS << 16) }, |
|
}; |
|
/* Set attrs if no event is selected and !null_run: */ |
|
if (stat_config.null_run) |
|
return 0; |
|
|
|
if (transaction_run) { |
|
struct parse_events_error errinfo; |
|
/* Handle -T as -M transaction. Once platform specific metrics |
|
* support has been added to the json files, all architectures |
|
* will use this approach. To determine transaction support |
|
* on an architecture test for such a metric name. |
|
*/ |
|
if (metricgroup__has_metric("transaction")) { |
|
struct option opt = { .value = &evsel_list }; |
|
|
|
return metricgroup__parse_groups(&opt, "transaction", |
|
stat_config.metric_no_group, |
|
stat_config.metric_no_merge, |
|
&stat_config.metric_events); |
|
} |
|
|
|
parse_events_error__init(&errinfo); |
|
if (pmu_have_event("cpu", "cycles-ct") && |
|
pmu_have_event("cpu", "el-start")) |
|
err = parse_events(evsel_list, transaction_attrs, |
|
&errinfo); |
|
else |
|
err = parse_events(evsel_list, |
|
transaction_limited_attrs, |
|
&errinfo); |
|
if (err) { |
|
fprintf(stderr, "Cannot set up transaction events\n"); |
|
parse_events_error__print(&errinfo, transaction_attrs); |
|
} |
|
parse_events_error__exit(&errinfo); |
|
return err ? -1 : 0; |
|
} |
|
|
|
if (smi_cost) { |
|
struct parse_events_error errinfo; |
|
int smi; |
|
|
|
if (sysfs__read_int(FREEZE_ON_SMI_PATH, &smi) < 0) { |
|
fprintf(stderr, "freeze_on_smi is not supported.\n"); |
|
return -1; |
|
} |
|
|
|
if (!smi) { |
|
if (sysfs__write_int(FREEZE_ON_SMI_PATH, 1) < 0) { |
|
fprintf(stderr, "Failed to set freeze_on_smi.\n"); |
|
return -1; |
|
} |
|
smi_reset = true; |
|
} |
|
|
|
if (!pmu_have_event("msr", "aperf") || |
|
!pmu_have_event("msr", "smi")) { |
|
fprintf(stderr, "To measure SMI cost, it needs " |
|
"msr/aperf/, msr/smi/ and cpu/cycles/ support\n"); |
|
return -1; |
|
} |
|
if (!force_metric_only) |
|
stat_config.metric_only = true; |
|
|
|
parse_events_error__init(&errinfo); |
|
err = parse_events(evsel_list, smi_cost_attrs, &errinfo); |
|
if (err) { |
|
parse_events_error__print(&errinfo, smi_cost_attrs); |
|
fprintf(stderr, "Cannot set up SMI cost events\n"); |
|
} |
|
parse_events_error__exit(&errinfo); |
|
return err ? -1 : 0; |
|
} |
|
|
|
if (topdown_run) { |
|
const char **metric_attrs = topdown_metric_attrs; |
|
unsigned int max_level = 1; |
|
char *str = NULL; |
|
bool warn = false; |
|
|
|
if (!force_metric_only) |
|
stat_config.metric_only = true; |
|
|
|
if (pmu_have_event("cpu", topdown_metric_L2_attrs[5])) { |
|
metric_attrs = topdown_metric_L2_attrs; |
|
max_level = 2; |
|
} |
|
|
|
if (stat_config.topdown_level > max_level) { |
|
pr_err("Invalid top-down metrics level. The max level is %u.\n", max_level); |
|
return -1; |
|
} else if (!stat_config.topdown_level) |
|
stat_config.topdown_level = max_level; |
|
|
|
if (topdown_filter_events(metric_attrs, &str, 1) < 0) { |
|
pr_err("Out of memory\n"); |
|
return -1; |
|
} |
|
if (metric_attrs[0] && str) { |
|
if (!stat_config.interval && !stat_config.metric_only) { |
|
fprintf(stat_config.output, |
|
"Topdown accuracy may decrease when measuring long periods.\n" |
|
"Please print the result regularly, e.g. -I1000\n"); |
|
} |
|
goto setup_metrics; |
|
} |
|
|
|
zfree(&str); |
|
|
|
if (stat_config.aggr_mode != AGGR_GLOBAL && |
|
stat_config.aggr_mode != AGGR_CORE) { |
|
pr_err("top down event configuration requires --per-core mode\n"); |
|
return -1; |
|
} |
|
stat_config.aggr_mode = AGGR_CORE; |
|
if (nr_cgroups || !target__has_cpu(&target)) { |
|
pr_err("top down event configuration requires system-wide mode (-a)\n"); |
|
return -1; |
|
} |
|
|
|
if (topdown_filter_events(topdown_attrs, &str, |
|
arch_topdown_check_group(&warn)) < 0) { |
|
pr_err("Out of memory\n"); |
|
return -1; |
|
} |
|
if (topdown_attrs[0] && str) { |
|
struct parse_events_error errinfo; |
|
if (warn) |
|
arch_topdown_group_warn(); |
|
setup_metrics: |
|
parse_events_error__init(&errinfo); |
|
err = parse_events(evsel_list, str, &errinfo); |
|
if (err) { |
|
fprintf(stderr, |
|
"Cannot set up top down events %s: %d\n", |
|
str, err); |
|
parse_events_error__print(&errinfo, str); |
|
parse_events_error__exit(&errinfo); |
|
free(str); |
|
return -1; |
|
} |
|
parse_events_error__exit(&errinfo); |
|
} else { |
|
fprintf(stderr, "System does not support topdown\n"); |
|
return -1; |
|
} |
|
free(str); |
|
} |
|
|
|
if (!evsel_list->core.nr_entries) { |
|
if (perf_pmu__has_hybrid()) { |
|
struct parse_events_error errinfo; |
|
const char *hybrid_str = "cycles,instructions,branches,branch-misses"; |
|
|
|
if (target__has_cpu(&target)) |
|
default_sw_attrs[0].config = PERF_COUNT_SW_CPU_CLOCK; |
|
|
|
if (evlist__add_default_attrs(evsel_list, |
|
default_sw_attrs) < 0) { |
|
return -1; |
|
} |
|
|
|
parse_events_error__init(&errinfo); |
|
err = parse_events(evsel_list, hybrid_str, &errinfo); |
|
if (err) { |
|
fprintf(stderr, |
|
"Cannot set up hybrid events %s: %d\n", |
|
hybrid_str, err); |
|
parse_events_error__print(&errinfo, hybrid_str); |
|
} |
|
parse_events_error__exit(&errinfo); |
|
return err ? -1 : 0; |
|
} |
|
|
|
if (target__has_cpu(&target)) |
|
default_attrs0[0].config = PERF_COUNT_SW_CPU_CLOCK; |
|
|
|
if (evlist__add_default_attrs(evsel_list, default_attrs0) < 0) |
|
return -1; |
|
if (pmu_have_event("cpu", "stalled-cycles-frontend")) { |
|
if (evlist__add_default_attrs(evsel_list, frontend_attrs) < 0) |
|
return -1; |
|
} |
|
if (pmu_have_event("cpu", "stalled-cycles-backend")) { |
|
if (evlist__add_default_attrs(evsel_list, backend_attrs) < 0) |
|
return -1; |
|
} |
|
if (evlist__add_default_attrs(evsel_list, default_attrs1) < 0) |
|
return -1; |
|
|
|
stat_config.topdown_level = TOPDOWN_MAX_LEVEL; |
|
if (arch_evlist__add_default_attrs(evsel_list) < 0) |
|
return -1; |
|
} |
|
|
|
/* Detailed events get appended to the event list: */ |
|
|
|
if (detailed_run < 1) |
|
return 0; |
|
|
|
/* Append detailed run extra attributes: */ |
|
if (evlist__add_default_attrs(evsel_list, detailed_attrs) < 0) |
|
return -1; |
|
|
|
if (detailed_run < 2) |
|
return 0; |
|
|
|
/* Append very detailed run extra attributes: */ |
|
if (evlist__add_default_attrs(evsel_list, very_detailed_attrs) < 0) |
|
return -1; |
|
|
|
if (detailed_run < 3) |
|
return 0; |
|
|
|
/* Append very, very detailed run extra attributes: */ |
|
return evlist__add_default_attrs(evsel_list, very_very_detailed_attrs); |
|
} |
|
|
|
static const char * const stat_record_usage[] = { |
|
"perf stat record [<options>]", |
|
NULL, |
|
}; |
|
|
|
static void init_features(struct perf_session *session) |
|
{ |
|
int feat; |
|
|
|
for (feat = HEADER_FIRST_FEATURE; feat < HEADER_LAST_FEATURE; feat++) |
|
perf_header__set_feat(&session->header, feat); |
|
|
|
perf_header__clear_feat(&session->header, HEADER_DIR_FORMAT); |
|
perf_header__clear_feat(&session->header, HEADER_BUILD_ID); |
|
perf_header__clear_feat(&session->header, HEADER_TRACING_DATA); |
|
perf_header__clear_feat(&session->header, HEADER_BRANCH_STACK); |
|
perf_header__clear_feat(&session->header, HEADER_AUXTRACE); |
|
} |
|
|
|
static int __cmd_record(int argc, const char **argv) |
|
{ |
|
struct perf_session *session; |
|
struct perf_data *data = &perf_stat.data; |
|
|
|
argc = parse_options(argc, argv, stat_options, stat_record_usage, |
|
PARSE_OPT_STOP_AT_NON_OPTION); |
|
|
|
if (output_name) |
|
data->path = output_name; |
|
|
|
if (stat_config.run_count != 1 || forever) { |
|
pr_err("Cannot use -r option with perf stat record.\n"); |
|
return -1; |
|
} |
|
|
|
session = perf_session__new(data, NULL); |
|
if (IS_ERR(session)) { |
|
pr_err("Perf session creation failed\n"); |
|
return PTR_ERR(session); |
|
} |
|
|
|
init_features(session); |
|
|
|
session->evlist = evsel_list; |
|
perf_stat.session = session; |
|
perf_stat.record = true; |
|
return argc; |
|
} |
|
|
|
static int process_stat_round_event(struct perf_session *session, |
|
union perf_event *event) |
|
{ |
|
struct perf_record_stat_round *stat_round = &event->stat_round; |
|
struct evsel *counter; |
|
struct timespec tsh, *ts = NULL; |
|
const char **argv = session->header.env.cmdline_argv; |
|
int argc = session->header.env.nr_cmdline; |
|
|
|
evlist__for_each_entry(evsel_list, counter) |
|
perf_stat_process_counter(&stat_config, counter); |
|
|
|
if (stat_round->type == PERF_STAT_ROUND_TYPE__FINAL) |
|
update_stats(&walltime_nsecs_stats, stat_round->time); |
|
|
|
if (stat_config.interval && stat_round->time) { |
|
tsh.tv_sec = stat_round->time / NSEC_PER_SEC; |
|
tsh.tv_nsec = stat_round->time % NSEC_PER_SEC; |
|
ts = &tsh; |
|
} |
|
|
|
print_counters(ts, argc, argv); |
|
return 0; |
|
} |
|
|
|
static |
|
int process_stat_config_event(struct perf_session *session, |
|
union perf_event *event) |
|
{ |
|
struct perf_tool *tool = session->tool; |
|
struct perf_stat *st = container_of(tool, struct perf_stat, tool); |
|
|
|
perf_event__read_stat_config(&stat_config, &event->stat_config); |
|
|
|
if (perf_cpu_map__empty(st->cpus)) { |
|
if (st->aggr_mode != AGGR_UNSET) |
|
pr_warning("warning: processing task data, aggregation mode not set\n"); |
|
return 0; |
|
} |
|
|
|
if (st->aggr_mode != AGGR_UNSET) |
|
stat_config.aggr_mode = st->aggr_mode; |
|
|
|
if (perf_stat.data.is_pipe) |
|
perf_stat_init_aggr_mode(); |
|
else |
|
perf_stat_init_aggr_mode_file(st); |
|
|
|
return 0; |
|
} |
|
|
|
static int set_maps(struct perf_stat *st) |
|
{ |
|
if (!st->cpus || !st->threads) |
|
return 0; |
|
|
|
if (WARN_ONCE(st->maps_allocated, "stats double allocation\n")) |
|
return -EINVAL; |
|
|
|
perf_evlist__set_maps(&evsel_list->core, st->cpus, st->threads); |
|
|
|
if (evlist__alloc_stats(evsel_list, true)) |
|
return -ENOMEM; |
|
|
|
st->maps_allocated = true; |
|
return 0; |
|
} |
|
|
|
static |
|
int process_thread_map_event(struct perf_session *session, |
|
union perf_event *event) |
|
{ |
|
struct perf_tool *tool = session->tool; |
|
struct perf_stat *st = container_of(tool, struct perf_stat, tool); |
|
|
|
if (st->threads) { |
|
pr_warning("Extra thread map event, ignoring.\n"); |
|
return 0; |
|
} |
|
|
|
st->threads = thread_map__new_event(&event->thread_map); |
|
if (!st->threads) |
|
return -ENOMEM; |
|
|
|
return set_maps(st); |
|
} |
|
|
|
static |
|
int process_cpu_map_event(struct perf_session *session, |
|
union perf_event *event) |
|
{ |
|
struct perf_tool *tool = session->tool; |
|
struct perf_stat *st = container_of(tool, struct perf_stat, tool); |
|
struct perf_cpu_map *cpus; |
|
|
|
if (st->cpus) { |
|
pr_warning("Extra cpu map event, ignoring.\n"); |
|
return 0; |
|
} |
|
|
|
cpus = cpu_map__new_data(&event->cpu_map.data); |
|
if (!cpus) |
|
return -ENOMEM; |
|
|
|
st->cpus = cpus; |
|
return set_maps(st); |
|
} |
|
|
|
static const char * const stat_report_usage[] = { |
|
"perf stat report [<options>]", |
|
NULL, |
|
}; |
|
|
|
static struct perf_stat perf_stat = { |
|
.tool = { |
|
.attr = perf_event__process_attr, |
|
.event_update = perf_event__process_event_update, |
|
.thread_map = process_thread_map_event, |
|
.cpu_map = process_cpu_map_event, |
|
.stat_config = process_stat_config_event, |
|
.stat = perf_event__process_stat_event, |
|
.stat_round = process_stat_round_event, |
|
}, |
|
.aggr_mode = AGGR_UNSET, |
|
}; |
|
|
|
static int __cmd_report(int argc, const char **argv) |
|
{ |
|
struct perf_session *session; |
|
const struct option options[] = { |
|
OPT_STRING('i', "input", &input_name, "file", "input file name"), |
|
OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode, |
|
"aggregate counts per processor socket", AGGR_SOCKET), |
|
OPT_SET_UINT(0, "per-die", &perf_stat.aggr_mode, |
|
"aggregate counts per processor die", AGGR_DIE), |
|
OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode, |
|
"aggregate counts per physical processor core", AGGR_CORE), |
|
OPT_SET_UINT(0, "per-node", &perf_stat.aggr_mode, |
|
"aggregate counts per numa node", AGGR_NODE), |
|
OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode, |
|
"disable CPU count aggregation", AGGR_NONE), |
|
OPT_END() |
|
}; |
|
struct stat st; |
|
int ret; |
|
|
|
argc = parse_options(argc, argv, options, stat_report_usage, 0); |
|
|
|
if (!input_name || !strlen(input_name)) { |
|
if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) |
|
input_name = "-"; |
|
else |
|
input_name = "perf.data"; |
|
} |
|
|
|
perf_stat.data.path = input_name; |
|
perf_stat.data.mode = PERF_DATA_MODE_READ; |
|
|
|
session = perf_session__new(&perf_stat.data, &perf_stat.tool); |
|
if (IS_ERR(session)) |
|
return PTR_ERR(session); |
|
|
|
perf_stat.session = session; |
|
stat_config.output = stderr; |
|
evsel_list = session->evlist; |
|
|
|
ret = perf_session__process_events(session); |
|
if (ret) |
|
return ret; |
|
|
|
perf_session__delete(session); |
|
return 0; |
|
} |
|
|
|
static void setup_system_wide(int forks) |
|
{ |
|
/* |
|
* Make system wide (-a) the default target if |
|
* no target was specified and one of following |
|
* conditions is met: |
|
* |
|
* - there's no workload specified |
|
* - there is workload specified but all requested |
|
* events are system wide events |
|
*/ |
|
if (!target__none(&target)) |
|
return; |
|
|
|
if (!forks) |
|
target.system_wide = true; |
|
else { |
|
struct evsel *counter; |
|
|
|
evlist__for_each_entry(evsel_list, counter) { |
|
if (!counter->core.system_wide && |
|
strcmp(counter->name, "duration_time")) { |
|
return; |
|
} |
|
} |
|
|
|
if (evsel_list->core.nr_entries) |
|
target.system_wide = true; |
|
} |
|
} |
|
|
|
int cmd_stat(int argc, const char **argv) |
|
{ |
|
const char * const stat_usage[] = { |
|
"perf stat [<options>] [<command>]", |
|
NULL |
|
}; |
|
int status = -EINVAL, run_idx, err; |
|
const char *mode; |
|
FILE *output = stderr; |
|
unsigned int interval, timeout; |
|
const char * const stat_subcommands[] = { "record", "report" }; |
|
char errbuf[BUFSIZ]; |
|
|
|
setlocale(LC_ALL, ""); |
|
|
|
evsel_list = evlist__new(); |
|
if (evsel_list == NULL) |
|
return -ENOMEM; |
|
|
|
parse_events__shrink_config_terms(); |
|
|
|
/* String-parsing callback-based options would segfault when negated */ |
|
set_option_flag(stat_options, 'e', "event", PARSE_OPT_NONEG); |
|
set_option_flag(stat_options, 'M', "metrics", PARSE_OPT_NONEG); |
|
set_option_flag(stat_options, 'G', "cgroup", PARSE_OPT_NONEG); |
|
|
|
argc = parse_options_subcommand(argc, argv, stat_options, stat_subcommands, |
|
(const char **) stat_usage, |
|
PARSE_OPT_STOP_AT_NON_OPTION); |
|
perf_stat__collect_metric_expr(evsel_list); |
|
perf_stat__init_shadow_stats(); |
|
|
|
if (stat_config.csv_sep) { |
|
stat_config.csv_output = true; |
|
if (!strcmp(stat_config.csv_sep, "\\t")) |
|
stat_config.csv_sep = "\t"; |
|
} else |
|
stat_config.csv_sep = DEFAULT_SEPARATOR; |
|
|
|
if (argc && strlen(argv[0]) > 2 && strstarts("record", argv[0])) { |
|
argc = __cmd_record(argc, argv); |
|
if (argc < 0) |
|
return -1; |
|
} else if (argc && strlen(argv[0]) > 2 && strstarts("report", argv[0])) |
|
return __cmd_report(argc, argv); |
|
|
|
interval = stat_config.interval; |
|
timeout = stat_config.timeout; |
|
|
|
/* |
|
* For record command the -o is already taken care of. |
|
*/ |
|
if (!STAT_RECORD && output_name && strcmp(output_name, "-")) |
|
output = NULL; |
|
|
|
if (output_name && output_fd) { |
|
fprintf(stderr, "cannot use both --output and --log-fd\n"); |
|
parse_options_usage(stat_usage, stat_options, "o", 1); |
|
parse_options_usage(NULL, stat_options, "log-fd", 0); |
|
goto out; |
|
} |
|
|
|
if (stat_config.metric_only && stat_config.aggr_mode == AGGR_THREAD) { |
|
fprintf(stderr, "--metric-only is not supported with --per-thread\n"); |
|
goto out; |
|
} |
|
|
|
if (stat_config.metric_only && stat_config.run_count > 1) { |
|
fprintf(stderr, "--metric-only is not supported with -r\n"); |
|
goto out; |
|
} |
|
|
|
if (stat_config.walltime_run_table && stat_config.run_count <= 1) { |
|
fprintf(stderr, "--table is only supported with -r\n"); |
|
parse_options_usage(stat_usage, stat_options, "r", 1); |
|
parse_options_usage(NULL, stat_options, "table", 0); |
|
goto out; |
|
} |
|
|
|
if (output_fd < 0) { |
|
fprintf(stderr, "argument to --log-fd must be a > 0\n"); |
|
parse_options_usage(stat_usage, stat_options, "log-fd", 0); |
|
goto out; |
|
} |
|
|
|
if (!output && !stat_config.quiet) { |
|
struct timespec tm; |
|
mode = append_file ? "a" : "w"; |
|
|
|
output = fopen(output_name, mode); |
|
if (!output) { |
|
perror("failed to create output file"); |
|
return -1; |
|
} |
|
clock_gettime(CLOCK_REALTIME, &tm); |
|
fprintf(output, "# started on %s\n", ctime(&tm.tv_sec)); |
|
} else if (output_fd > 0) { |
|
mode = append_file ? "a" : "w"; |
|
output = fdopen(output_fd, mode); |
|
if (!output) { |
|
perror("Failed opening logfd"); |
|
return -errno; |
|
} |
|
} |
|
|
|
stat_config.output = output; |
|
|
|
/* |
|
* let the spreadsheet do the pretty-printing |
|
*/ |
|
if (stat_config.csv_output) { |
|
/* User explicitly passed -B? */ |
|
if (big_num_opt == 1) { |
|
fprintf(stderr, "-B option not supported with -x\n"); |
|
parse_options_usage(stat_usage, stat_options, "B", 1); |
|
parse_options_usage(NULL, stat_options, "x", 1); |
|
goto out; |
|
} else /* Nope, so disable big number formatting */ |
|
stat_config.big_num = false; |
|
} else if (big_num_opt == 0) /* User passed --no-big-num */ |
|
stat_config.big_num = false; |
|
|
|
err = target__validate(&target); |
|
if (err) { |
|
target__strerror(&target, err, errbuf, BUFSIZ); |
|
pr_warning("%s\n", errbuf); |
|
} |
|
|
|
setup_system_wide(argc); |
|
|
|
/* |
|
* Display user/system times only for single |
|
* run and when there's specified tracee. |
|
*/ |
|
if ((stat_config.run_count == 1) && target__none(&target)) |
|
stat_config.ru_display = true; |
|
|
|
if (stat_config.run_count < 0) { |
|
pr_err("Run count must be a positive number\n"); |
|
parse_options_usage(stat_usage, stat_options, "r", 1); |
|
goto out; |
|
} else if (stat_config.run_count == 0) { |
|
forever = true; |
|
stat_config.run_count = 1; |
|
} |
|
|
|
if (stat_config.walltime_run_table) { |
|
stat_config.walltime_run = zalloc(stat_config.run_count * sizeof(stat_config.walltime_run[0])); |
|
if (!stat_config.walltime_run) { |
|
pr_err("failed to setup -r option"); |
|
goto out; |
|
} |
|
} |
|
|
|
if ((stat_config.aggr_mode == AGGR_THREAD) && |
|
!target__has_task(&target)) { |
|
if (!target.system_wide || target.cpu_list) { |
|
fprintf(stderr, "The --per-thread option is only " |
|
"available when monitoring via -p -t -a " |
|
"options or only --per-thread.\n"); |
|
parse_options_usage(NULL, stat_options, "p", 1); |
|
parse_options_usage(NULL, stat_options, "t", 1); |
|
goto out; |
|
} |
|
} |
|
|
|
/* |
|
* no_aggr, cgroup are for system-wide only |
|
* --per-thread is aggregated per thread, we dont mix it with cpu mode |
|
*/ |
|
if (((stat_config.aggr_mode != AGGR_GLOBAL && |
|
stat_config.aggr_mode != AGGR_THREAD) || |
|
(nr_cgroups || stat_config.cgroup_list)) && |
|
!target__has_cpu(&target)) { |
|
fprintf(stderr, "both cgroup and no-aggregation " |
|
"modes only available in system-wide mode\n"); |
|
|
|
parse_options_usage(stat_usage, stat_options, "G", 1); |
|
parse_options_usage(NULL, stat_options, "A", 1); |
|
parse_options_usage(NULL, stat_options, "a", 1); |
|
parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); |
|
goto out; |
|
} |
|
|
|
if (stat_config.iostat_run) { |
|
status = iostat_prepare(evsel_list, &stat_config); |
|
if (status) |
|
goto out; |
|
if (iostat_mode == IOSTAT_LIST) { |
|
iostat_list(evsel_list, &stat_config); |
|
goto out; |
|
} else if (verbose) |
|
iostat_list(evsel_list, &stat_config); |
|
if (iostat_mode == IOSTAT_RUN && !target__has_cpu(&target)) |
|
target.system_wide = true; |
|
} |
|
|
|
if (add_default_attributes()) |
|
goto out; |
|
|
|
if (stat_config.cgroup_list) { |
|
if (nr_cgroups > 0) { |
|
pr_err("--cgroup and --for-each-cgroup cannot be used together\n"); |
|
parse_options_usage(stat_usage, stat_options, "G", 1); |
|
parse_options_usage(NULL, stat_options, "for-each-cgroup", 0); |
|
goto out; |
|
} |
|
|
|
if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list, |
|
&stat_config.metric_events, true) < 0) { |
|
parse_options_usage(stat_usage, stat_options, |
|
"for-each-cgroup", 0); |
|
goto out; |
|
} |
|
} |
|
|
|
if ((stat_config.aggr_mode == AGGR_THREAD) && (target.system_wide)) |
|
target.per_thread = true; |
|
|
|
if (evlist__fix_hybrid_cpus(evsel_list, target.cpu_list)) { |
|
pr_err("failed to use cpu list %s\n", target.cpu_list); |
|
goto out; |
|
} |
|
|
|
target.hybrid = perf_pmu__has_hybrid(); |
|
if (evlist__create_maps(evsel_list, &target) < 0) { |
|
if (target__has_task(&target)) { |
|
pr_err("Problems finding threads of monitor\n"); |
|
parse_options_usage(stat_usage, stat_options, "p", 1); |
|
parse_options_usage(NULL, stat_options, "t", 1); |
|
} else if (target__has_cpu(&target)) { |
|
perror("failed to parse CPUs map"); |
|
parse_options_usage(stat_usage, stat_options, "C", 1); |
|
parse_options_usage(NULL, stat_options, "a", 1); |
|
} |
|
goto out; |
|
} |
|
|
|
evlist__check_cpu_maps(evsel_list); |
|
|
|
/* |
|
* Initialize thread_map with comm names, |
|
* so we could print it out on output. |
|
*/ |
|
if (stat_config.aggr_mode == AGGR_THREAD) { |
|
thread_map__read_comms(evsel_list->core.threads); |
|
if (target.system_wide) { |
|
if (runtime_stat_new(&stat_config, |
|
perf_thread_map__nr(evsel_list->core.threads))) { |
|
goto out; |
|
} |
|
} |
|
} |
|
|
|
if (stat_config.aggr_mode == AGGR_NODE) |
|
cpu__setup_cpunode_map(); |
|
|
|
if (stat_config.times && interval) |
|
interval_count = true; |
|
else if (stat_config.times && !interval) { |
|
pr_err("interval-count option should be used together with " |
|
"interval-print.\n"); |
|
parse_options_usage(stat_usage, stat_options, "interval-count", 0); |
|
parse_options_usage(stat_usage, stat_options, "I", 1); |
|
goto out; |
|
} |
|
|
|
if (timeout && timeout < 100) { |
|
if (timeout < 10) { |
|
pr_err("timeout must be >= 10ms.\n"); |
|
parse_options_usage(stat_usage, stat_options, "timeout", 0); |
|
goto out; |
|
} else |
|
pr_warning("timeout < 100ms. " |
|
"The overhead percentage could be high in some cases. " |
|
"Please proceed with caution.\n"); |
|
} |
|
if (timeout && interval) { |
|
pr_err("timeout option is not supported with interval-print.\n"); |
|
parse_options_usage(stat_usage, stat_options, "timeout", 0); |
|
parse_options_usage(stat_usage, stat_options, "I", 1); |
|
goto out; |
|
} |
|
|
|
if (evlist__alloc_stats(evsel_list, interval)) |
|
goto out; |
|
|
|
if (perf_stat_init_aggr_mode()) |
|
goto out; |
|
|
|
/* |
|
* Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless |
|
* while avoiding that older tools show confusing messages. |
|
* |
|
* However for pipe sessions we need to keep it zero, |
|
* because script's perf_evsel__check_attr is triggered |
|
* by attr->sample_type != 0, and we can't run it on |
|
* stat sessions. |
|
*/ |
|
stat_config.identifier = !(STAT_RECORD && perf_stat.data.is_pipe); |
|
|
|
/* |
|
* We dont want to block the signals - that would cause |
|
* child tasks to inherit that and Ctrl-C would not work. |
|
* What we want is for Ctrl-C to work in the exec()-ed |
|
* task, but being ignored by perf stat itself: |
|
*/ |
|
atexit(sig_atexit); |
|
if (!forever) |
|
signal(SIGINT, skip_signal); |
|
signal(SIGCHLD, skip_signal); |
|
signal(SIGALRM, skip_signal); |
|
signal(SIGABRT, skip_signal); |
|
|
|
if (evlist__initialize_ctlfd(evsel_list, stat_config.ctl_fd, stat_config.ctl_fd_ack)) |
|
goto out; |
|
|
|
status = 0; |
|
for (run_idx = 0; forever || run_idx < stat_config.run_count; run_idx++) { |
|
if (stat_config.run_count != 1 && verbose > 0) |
|
fprintf(output, "[ perf stat: executing run #%d ... ]\n", |
|
run_idx + 1); |
|
|
|
if (run_idx != 0) |
|
evlist__reset_prev_raw_counts(evsel_list); |
|
|
|
status = run_perf_stat(argc, argv, run_idx); |
|
if (forever && status != -1 && !interval) { |
|
print_counters(NULL, argc, argv); |
|
perf_stat__reset_stats(); |
|
} |
|
} |
|
|
|
if (!forever && status != -1 && (!interval || stat_config.summary)) |
|
print_counters(NULL, argc, argv); |
|
|
|
evlist__finalize_ctlfd(evsel_list); |
|
|
|
if (STAT_RECORD) { |
|
/* |
|
* We synthesize the kernel mmap record just so that older tools |
|
* don't emit warnings about not being able to resolve symbols |
|
* due to /proc/sys/kernel/kptr_restrict settings and instead provide |
|
* a saner message about no samples being in the perf.data file. |
|
* |
|
* This also serves to suppress a warning about f_header.data.size == 0 |
|
* in header.c at the moment 'perf stat record' gets introduced, which |
|
* is not really needed once we start adding the stat specific PERF_RECORD_ |
|
* records, but the need to suppress the kptr_restrict messages in older |
|
* tools remain -acme |
|
*/ |
|
int fd = perf_data__fd(&perf_stat.data); |
|
|
|
err = perf_event__synthesize_kernel_mmap((void *)&perf_stat, |
|
process_synthesized_event, |
|
&perf_stat.session->machines.host); |
|
if (err) { |
|
pr_warning("Couldn't synthesize the kernel mmap record, harmless, " |
|
"older tools may produce warnings about this file\n."); |
|
} |
|
|
|
if (!interval) { |
|
if (WRITE_STAT_ROUND_EVENT(walltime_nsecs_stats.max, FINAL)) |
|
pr_err("failed to write stat round event\n"); |
|
} |
|
|
|
if (!perf_stat.data.is_pipe) { |
|
perf_stat.session->header.data_size += perf_stat.bytes_written; |
|
perf_session__write_header(perf_stat.session, evsel_list, fd, true); |
|
} |
|
|
|
evlist__close(evsel_list); |
|
perf_session__delete(perf_stat.session); |
|
} |
|
|
|
perf_stat__exit_aggr_mode(); |
|
evlist__free_stats(evsel_list); |
|
out: |
|
if (stat_config.iostat_run) |
|
iostat_release(evsel_list); |
|
|
|
zfree(&stat_config.walltime_run); |
|
|
|
if (smi_cost && smi_reset) |
|
sysfs__write_int(FREEZE_ON_SMI_PATH, 0); |
|
|
|
evlist__delete(evsel_list); |
|
|
|
metricgroup__rblist_exit(&stat_config.metric_events); |
|
runtime_stat_delete(&stat_config); |
|
evlist__close_control(stat_config.ctl_fd, stat_config.ctl_fd_ack, &stat_config.ctl_fd_close); |
|
|
|
return status; |
|
}
|
|
|