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507 lines
12 KiB
507 lines
12 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <inttypes.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <unistd.h> |
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#include "builtin.h" |
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#include "perf.h" |
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|
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#include <subcmd/parse-options.h> |
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#include "util/auxtrace.h" |
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#include "util/trace-event.h" |
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#include "util/tool.h" |
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#include "util/session.h" |
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#include "util/data.h" |
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#include "util/map_symbol.h" |
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#include "util/mem-events.h" |
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#include "util/debug.h" |
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#include "util/dso.h" |
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#include "util/map.h" |
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#include "util/symbol.h" |
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#include "util/pmu.h" |
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#include "util/pmu-hybrid.h" |
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#include <linux/err.h> |
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#define MEM_OPERATION_LOAD 0x1 |
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#define MEM_OPERATION_STORE 0x2 |
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struct perf_mem { |
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struct perf_tool tool; |
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char const *input_name; |
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bool hide_unresolved; |
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bool dump_raw; |
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bool force; |
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bool phys_addr; |
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bool data_page_size; |
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int operation; |
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const char *cpu_list; |
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DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS); |
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}; |
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static int parse_record_events(const struct option *opt, |
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const char *str, int unset __maybe_unused) |
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{ |
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struct perf_mem *mem = *(struct perf_mem **)opt->value; |
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if (!strcmp(str, "list")) { |
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perf_mem_events__list(); |
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exit(0); |
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} |
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if (perf_mem_events__parse(str)) |
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exit(-1); |
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mem->operation = 0; |
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return 0; |
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} |
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static const char * const __usage[] = { |
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"perf mem record [<options>] [<command>]", |
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"perf mem record [<options>] -- <command> [<options>]", |
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NULL |
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}; |
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static const char * const *record_mem_usage = __usage; |
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static int __cmd_record(int argc, const char **argv, struct perf_mem *mem) |
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{ |
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int rec_argc, i = 0, j, tmp_nr = 0; |
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int start, end; |
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const char **rec_argv; |
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char **rec_tmp; |
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int ret; |
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bool all_user = false, all_kernel = false; |
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struct perf_mem_event *e; |
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struct option options[] = { |
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OPT_CALLBACK('e', "event", &mem, "event", |
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"event selector. use 'perf mem record -e list' to list available events", |
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parse_record_events), |
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OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"), |
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OPT_INCR('v', "verbose", &verbose, |
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"be more verbose (show counter open errors, etc)"), |
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OPT_BOOLEAN('U', "all-user", &all_user, "collect only user level data"), |
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OPT_BOOLEAN('K', "all-kernel", &all_kernel, "collect only kernel level data"), |
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OPT_END() |
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}; |
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if (perf_mem_events__init()) { |
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pr_err("failed: memory events not supported\n"); |
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return -1; |
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} |
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argc = parse_options(argc, argv, options, record_mem_usage, |
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PARSE_OPT_KEEP_UNKNOWN); |
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if (!perf_pmu__has_hybrid()) |
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rec_argc = argc + 9; /* max number of arguments */ |
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else |
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rec_argc = argc + 9 * perf_pmu__hybrid_pmu_num(); |
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rec_argv = calloc(rec_argc + 1, sizeof(char *)); |
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if (!rec_argv) |
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return -1; |
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/* |
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* Save the allocated event name strings. |
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*/ |
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rec_tmp = calloc(rec_argc + 1, sizeof(char *)); |
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if (!rec_tmp) { |
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free(rec_argv); |
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return -1; |
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} |
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rec_argv[i++] = "record"; |
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e = perf_mem_events__ptr(PERF_MEM_EVENTS__LOAD_STORE); |
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/* |
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* The load and store operations are required, use the event |
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* PERF_MEM_EVENTS__LOAD_STORE if it is supported. |
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*/ |
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if (e->tag && |
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(mem->operation & MEM_OPERATION_LOAD) && |
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(mem->operation & MEM_OPERATION_STORE)) { |
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e->record = true; |
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} else { |
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if (mem->operation & MEM_OPERATION_LOAD) { |
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e = perf_mem_events__ptr(PERF_MEM_EVENTS__LOAD); |
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e->record = true; |
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} |
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if (mem->operation & MEM_OPERATION_STORE) { |
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e = perf_mem_events__ptr(PERF_MEM_EVENTS__STORE); |
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e->record = true; |
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} |
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} |
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e = perf_mem_events__ptr(PERF_MEM_EVENTS__LOAD); |
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if (e->record) |
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rec_argv[i++] = "-W"; |
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rec_argv[i++] = "-d"; |
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if (mem->phys_addr) |
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rec_argv[i++] = "--phys-data"; |
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if (mem->data_page_size) |
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rec_argv[i++] = "--data-page-size"; |
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start = i; |
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ret = perf_mem_events__record_args(rec_argv, &i, rec_tmp, &tmp_nr); |
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if (ret) |
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goto out; |
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end = i; |
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if (all_user) |
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rec_argv[i++] = "--all-user"; |
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if (all_kernel) |
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rec_argv[i++] = "--all-kernel"; |
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for (j = 0; j < argc; j++, i++) |
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rec_argv[i] = argv[j]; |
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if (verbose > 0) { |
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pr_debug("calling: record "); |
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for (j = start; j < end; j++) |
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pr_debug("%s ", rec_argv[j]); |
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pr_debug("\n"); |
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} |
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ret = cmd_record(i, rec_argv); |
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out: |
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for (i = 0; i < tmp_nr; i++) |
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free(rec_tmp[i]); |
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free(rec_tmp); |
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free(rec_argv); |
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return ret; |
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} |
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static int |
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dump_raw_samples(struct perf_tool *tool, |
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union perf_event *event, |
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struct perf_sample *sample, |
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struct machine *machine) |
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{ |
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struct perf_mem *mem = container_of(tool, struct perf_mem, tool); |
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struct addr_location al; |
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const char *fmt, *field_sep; |
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char str[PAGE_SIZE_NAME_LEN]; |
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if (machine__resolve(machine, &al, sample) < 0) { |
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fprintf(stderr, "problem processing %d event, skipping it.\n", |
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event->header.type); |
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return -1; |
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} |
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if (al.filtered || (mem->hide_unresolved && al.sym == NULL)) |
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goto out_put; |
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if (al.map != NULL) |
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al.map->dso->hit = 1; |
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field_sep = symbol_conf.field_sep; |
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if (field_sep) { |
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fmt = "%d%s%d%s0x%"PRIx64"%s0x%"PRIx64"%s"; |
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} else { |
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fmt = "%5d%s%5d%s0x%016"PRIx64"%s0x016%"PRIx64"%s"; |
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symbol_conf.field_sep = " "; |
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} |
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printf(fmt, |
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sample->pid, |
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symbol_conf.field_sep, |
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sample->tid, |
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symbol_conf.field_sep, |
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sample->ip, |
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symbol_conf.field_sep, |
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sample->addr, |
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symbol_conf.field_sep); |
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if (mem->phys_addr) { |
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printf("0x%016"PRIx64"%s", |
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sample->phys_addr, |
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symbol_conf.field_sep); |
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} |
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if (mem->data_page_size) { |
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printf("%s%s", |
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get_page_size_name(sample->data_page_size, str), |
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symbol_conf.field_sep); |
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} |
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if (field_sep) |
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fmt = "%"PRIu64"%s0x%"PRIx64"%s%s:%s\n"; |
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else |
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fmt = "%5"PRIu64"%s0x%06"PRIx64"%s%s:%s\n"; |
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printf(fmt, |
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sample->weight, |
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symbol_conf.field_sep, |
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sample->data_src, |
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symbol_conf.field_sep, |
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al.map ? (al.map->dso ? al.map->dso->long_name : "???") : "???", |
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al.sym ? al.sym->name : "???"); |
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out_put: |
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addr_location__put(&al); |
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return 0; |
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} |
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static int process_sample_event(struct perf_tool *tool, |
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union perf_event *event, |
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struct perf_sample *sample, |
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struct evsel *evsel __maybe_unused, |
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struct machine *machine) |
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{ |
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return dump_raw_samples(tool, event, sample, machine); |
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} |
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static int report_raw_events(struct perf_mem *mem) |
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{ |
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struct itrace_synth_opts itrace_synth_opts = { |
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.set = true, |
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.mem = true, /* Only enable memory event */ |
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.default_no_sample = true, |
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}; |
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struct perf_data data = { |
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.path = input_name, |
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.mode = PERF_DATA_MODE_READ, |
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.force = mem->force, |
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}; |
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int ret; |
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struct perf_session *session = perf_session__new(&data, &mem->tool); |
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if (IS_ERR(session)) |
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return PTR_ERR(session); |
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session->itrace_synth_opts = &itrace_synth_opts; |
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if (mem->cpu_list) { |
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ret = perf_session__cpu_bitmap(session, mem->cpu_list, |
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mem->cpu_bitmap); |
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if (ret < 0) |
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goto out_delete; |
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} |
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ret = symbol__init(&session->header.env); |
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if (ret < 0) |
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goto out_delete; |
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printf("# PID, TID, IP, ADDR, "); |
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if (mem->phys_addr) |
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printf("PHYS ADDR, "); |
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if (mem->data_page_size) |
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printf("DATA PAGE SIZE, "); |
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printf("LOCAL WEIGHT, DSRC, SYMBOL\n"); |
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ret = perf_session__process_events(session); |
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out_delete: |
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perf_session__delete(session); |
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return ret; |
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} |
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static char *get_sort_order(struct perf_mem *mem) |
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{ |
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bool has_extra_options = (mem->phys_addr | mem->data_page_size) ? true : false; |
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char sort[128]; |
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/* |
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* there is no weight (cost) associated with stores, so don't print |
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* the column |
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*/ |
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if (!(mem->operation & MEM_OPERATION_LOAD)) { |
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strcpy(sort, "--sort=mem,sym,dso,symbol_daddr," |
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"dso_daddr,tlb,locked"); |
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} else if (has_extra_options) { |
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strcpy(sort, "--sort=local_weight,mem,sym,dso,symbol_daddr," |
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"dso_daddr,snoop,tlb,locked,blocked"); |
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} else |
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return NULL; |
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if (mem->phys_addr) |
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strcat(sort, ",phys_daddr"); |
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if (mem->data_page_size) |
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strcat(sort, ",data_page_size"); |
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return strdup(sort); |
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} |
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static int report_events(int argc, const char **argv, struct perf_mem *mem) |
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{ |
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const char **rep_argv; |
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int ret, i = 0, j, rep_argc; |
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char *new_sort_order; |
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if (mem->dump_raw) |
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return report_raw_events(mem); |
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rep_argc = argc + 3; |
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rep_argv = calloc(rep_argc + 1, sizeof(char *)); |
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if (!rep_argv) |
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return -1; |
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rep_argv[i++] = "report"; |
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rep_argv[i++] = "--mem-mode"; |
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rep_argv[i++] = "-n"; /* display number of samples */ |
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new_sort_order = get_sort_order(mem); |
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if (new_sort_order) |
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rep_argv[i++] = new_sort_order; |
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for (j = 1; j < argc; j++, i++) |
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rep_argv[i] = argv[j]; |
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ret = cmd_report(i, rep_argv); |
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free(rep_argv); |
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return ret; |
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} |
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struct mem_mode { |
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const char *name; |
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int mode; |
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}; |
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#define MEM_OPT(n, m) \ |
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{ .name = n, .mode = (m) } |
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#define MEM_END { .name = NULL } |
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static const struct mem_mode mem_modes[]={ |
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MEM_OPT("load", MEM_OPERATION_LOAD), |
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MEM_OPT("store", MEM_OPERATION_STORE), |
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MEM_END |
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}; |
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static int |
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parse_mem_ops(const struct option *opt, const char *str, int unset) |
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{ |
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int *mode = (int *)opt->value; |
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const struct mem_mode *m; |
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char *s, *os = NULL, *p; |
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int ret = -1; |
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if (unset) |
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return 0; |
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/* str may be NULL in case no arg is passed to -t */ |
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if (str) { |
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/* because str is read-only */ |
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s = os = strdup(str); |
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if (!s) |
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return -1; |
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/* reset mode */ |
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*mode = 0; |
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for (;;) { |
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p = strchr(s, ','); |
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if (p) |
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*p = '\0'; |
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for (m = mem_modes; m->name; m++) { |
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if (!strcasecmp(s, m->name)) |
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break; |
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} |
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if (!m->name) { |
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fprintf(stderr, "unknown sampling op %s," |
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" check man page\n", s); |
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goto error; |
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} |
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*mode |= m->mode; |
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if (!p) |
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break; |
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s = p + 1; |
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} |
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} |
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ret = 0; |
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if (*mode == 0) |
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*mode = MEM_OPERATION_LOAD; |
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error: |
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free(os); |
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return ret; |
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} |
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int cmd_mem(int argc, const char **argv) |
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{ |
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struct stat st; |
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struct perf_mem mem = { |
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.tool = { |
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.sample = process_sample_event, |
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.mmap = perf_event__process_mmap, |
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.mmap2 = perf_event__process_mmap2, |
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.comm = perf_event__process_comm, |
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.lost = perf_event__process_lost, |
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.fork = perf_event__process_fork, |
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.attr = perf_event__process_attr, |
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.build_id = perf_event__process_build_id, |
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.namespaces = perf_event__process_namespaces, |
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.auxtrace_info = perf_event__process_auxtrace_info, |
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.auxtrace = perf_event__process_auxtrace, |
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.auxtrace_error = perf_event__process_auxtrace_error, |
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.ordered_events = true, |
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}, |
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.input_name = "perf.data", |
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/* |
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* default to both load an store sampling |
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*/ |
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.operation = MEM_OPERATION_LOAD | MEM_OPERATION_STORE, |
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}; |
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const struct option mem_options[] = { |
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OPT_CALLBACK('t', "type", &mem.operation, |
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"type", "memory operations(load,store) Default load,store", |
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parse_mem_ops), |
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OPT_BOOLEAN('D', "dump-raw-samples", &mem.dump_raw, |
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"dump raw samples in ASCII"), |
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OPT_BOOLEAN('U', "hide-unresolved", &mem.hide_unresolved, |
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"Only display entries resolved to a symbol"), |
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OPT_STRING('i', "input", &input_name, "file", |
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"input file name"), |
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OPT_STRING('C', "cpu", &mem.cpu_list, "cpu", |
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"list of cpus to profile"), |
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OPT_STRING_NOEMPTY('x', "field-separator", &symbol_conf.field_sep, |
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"separator", |
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"separator for columns, no spaces will be added" |
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" between columns '.' is reserved."), |
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OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"), |
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OPT_BOOLEAN('p', "phys-data", &mem.phys_addr, "Record/Report sample physical addresses"), |
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OPT_BOOLEAN(0, "data-page-size", &mem.data_page_size, "Record/Report sample data address page size"), |
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OPT_END() |
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}; |
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const char *const mem_subcommands[] = { "record", "report", NULL }; |
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const char *mem_usage[] = { |
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NULL, |
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NULL |
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}; |
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argc = parse_options_subcommand(argc, argv, mem_options, mem_subcommands, |
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mem_usage, PARSE_OPT_KEEP_UNKNOWN); |
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if (!argc || !(strncmp(argv[0], "rec", 3) || mem.operation)) |
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usage_with_options(mem_usage, mem_options); |
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if (!mem.input_name || !strlen(mem.input_name)) { |
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if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode)) |
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mem.input_name = "-"; |
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else |
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mem.input_name = "perf.data"; |
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} |
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if (!strncmp(argv[0], "rec", 3)) |
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return __cmd_record(argc, argv, &mem); |
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else if (!strncmp(argv[0], "rep", 3)) |
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return report_events(argc, argv, &mem); |
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else |
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usage_with_options(mem_usage, mem_options); |
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return 0; |
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}
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