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1306 lines
37 KiB
1306 lines
37 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <stdio.h> |
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#include "evsel.h" |
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#include "stat.h" |
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#include "color.h" |
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#include "pmu.h" |
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#include "rblist.h" |
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#include "evlist.h" |
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#include "expr.h" |
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#include "metricgroup.h" |
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#include "cgroup.h" |
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#include "units.h" |
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#include <linux/zalloc.h> |
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#include "iostat.h" |
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|
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/* |
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* AGGR_GLOBAL: Use CPU 0 |
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* AGGR_SOCKET: Use first CPU of socket |
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* AGGR_DIE: Use first CPU of die |
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* AGGR_CORE: Use first CPU of core |
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* AGGR_NONE: Use matching CPU |
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* AGGR_THREAD: Not supported? |
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*/ |
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|
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struct runtime_stat rt_stat; |
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struct stats walltime_nsecs_stats; |
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|
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struct saved_value { |
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struct rb_node rb_node; |
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struct evsel *evsel; |
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enum stat_type type; |
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int ctx; |
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int cpu; |
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struct cgroup *cgrp; |
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struct runtime_stat *stat; |
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struct stats stats; |
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u64 metric_total; |
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int metric_other; |
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}; |
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|
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static int saved_value_cmp(struct rb_node *rb_node, const void *entry) |
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{ |
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struct saved_value *a = container_of(rb_node, |
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struct saved_value, |
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rb_node); |
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const struct saved_value *b = entry; |
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|
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if (a->cpu != b->cpu) |
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return a->cpu - b->cpu; |
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|
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/* |
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* Previously the rbtree was used to link generic metrics. |
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* The keys were evsel/cpu. Now the rbtree is extended to support |
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* per-thread shadow stats. For shadow stats case, the keys |
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* are cpu/type/ctx/stat (evsel is NULL). For generic metrics |
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* case, the keys are still evsel/cpu (type/ctx/stat are 0 or NULL). |
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*/ |
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if (a->type != b->type) |
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return a->type - b->type; |
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|
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if (a->ctx != b->ctx) |
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return a->ctx - b->ctx; |
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|
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if (a->cgrp != b->cgrp) |
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return (char *)a->cgrp < (char *)b->cgrp ? -1 : +1; |
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|
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if (a->evsel == NULL && b->evsel == NULL) { |
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if (a->stat == b->stat) |
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return 0; |
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|
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if ((char *)a->stat < (char *)b->stat) |
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return -1; |
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|
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return 1; |
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} |
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|
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if (a->evsel == b->evsel) |
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return 0; |
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if ((char *)a->evsel < (char *)b->evsel) |
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return -1; |
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return +1; |
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} |
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|
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static struct rb_node *saved_value_new(struct rblist *rblist __maybe_unused, |
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const void *entry) |
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{ |
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struct saved_value *nd = malloc(sizeof(struct saved_value)); |
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|
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if (!nd) |
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return NULL; |
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memcpy(nd, entry, sizeof(struct saved_value)); |
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return &nd->rb_node; |
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} |
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|
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static void saved_value_delete(struct rblist *rblist __maybe_unused, |
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struct rb_node *rb_node) |
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{ |
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struct saved_value *v; |
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|
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BUG_ON(!rb_node); |
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v = container_of(rb_node, struct saved_value, rb_node); |
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free(v); |
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} |
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|
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static struct saved_value *saved_value_lookup(struct evsel *evsel, |
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int cpu, |
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bool create, |
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enum stat_type type, |
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int ctx, |
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struct runtime_stat *st, |
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struct cgroup *cgrp) |
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{ |
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struct rblist *rblist; |
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struct rb_node *nd; |
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struct saved_value dm = { |
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.cpu = cpu, |
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.evsel = evsel, |
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.type = type, |
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.ctx = ctx, |
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.stat = st, |
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.cgrp = cgrp, |
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}; |
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|
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rblist = &st->value_list; |
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|
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/* don't use context info for clock events */ |
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if (type == STAT_NSECS) |
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dm.ctx = 0; |
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nd = rblist__find(rblist, &dm); |
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if (nd) |
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return container_of(nd, struct saved_value, rb_node); |
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if (create) { |
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rblist__add_node(rblist, &dm); |
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nd = rblist__find(rblist, &dm); |
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if (nd) |
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return container_of(nd, struct saved_value, rb_node); |
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} |
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return NULL; |
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} |
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|
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void runtime_stat__init(struct runtime_stat *st) |
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{ |
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struct rblist *rblist = &st->value_list; |
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|
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rblist__init(rblist); |
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rblist->node_cmp = saved_value_cmp; |
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rblist->node_new = saved_value_new; |
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rblist->node_delete = saved_value_delete; |
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} |
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|
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void runtime_stat__exit(struct runtime_stat *st) |
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{ |
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rblist__exit(&st->value_list); |
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} |
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|
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void perf_stat__init_shadow_stats(void) |
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{ |
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runtime_stat__init(&rt_stat); |
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} |
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|
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static int evsel_context(struct evsel *evsel) |
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{ |
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int ctx = 0; |
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|
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if (evsel->core.attr.exclude_kernel) |
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ctx |= CTX_BIT_KERNEL; |
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if (evsel->core.attr.exclude_user) |
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ctx |= CTX_BIT_USER; |
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if (evsel->core.attr.exclude_hv) |
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ctx |= CTX_BIT_HV; |
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if (evsel->core.attr.exclude_host) |
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ctx |= CTX_BIT_HOST; |
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if (evsel->core.attr.exclude_idle) |
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ctx |= CTX_BIT_IDLE; |
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return ctx; |
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} |
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|
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static void reset_stat(struct runtime_stat *st) |
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{ |
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struct rblist *rblist; |
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struct rb_node *pos, *next; |
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|
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rblist = &st->value_list; |
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next = rb_first_cached(&rblist->entries); |
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while (next) { |
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pos = next; |
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next = rb_next(pos); |
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memset(&container_of(pos, struct saved_value, rb_node)->stats, |
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0, |
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sizeof(struct stats)); |
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} |
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} |
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|
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void perf_stat__reset_shadow_stats(void) |
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{ |
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reset_stat(&rt_stat); |
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memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats)); |
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} |
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|
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void perf_stat__reset_shadow_per_stat(struct runtime_stat *st) |
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{ |
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reset_stat(st); |
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} |
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struct runtime_stat_data { |
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int ctx; |
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struct cgroup *cgrp; |
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}; |
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static void update_runtime_stat(struct runtime_stat *st, |
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enum stat_type type, |
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int cpu, u64 count, |
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struct runtime_stat_data *rsd) |
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{ |
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struct saved_value *v = saved_value_lookup(NULL, cpu, true, type, |
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rsd->ctx, st, rsd->cgrp); |
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|
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if (v) |
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update_stats(&v->stats, count); |
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} |
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|
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/* |
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* Update various tracking values we maintain to print |
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* more semantic information such as miss/hit ratios, |
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* instruction rates, etc: |
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*/ |
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void perf_stat__update_shadow_stats(struct evsel *counter, u64 count, |
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int cpu, struct runtime_stat *st) |
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{ |
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u64 count_ns = count; |
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struct saved_value *v; |
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struct runtime_stat_data rsd = { |
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.ctx = evsel_context(counter), |
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.cgrp = counter->cgrp, |
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}; |
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count *= counter->scale; |
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|
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if (evsel__is_clock(counter)) |
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update_runtime_stat(st, STAT_NSECS, cpu, count_ns, &rsd); |
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else if (evsel__match(counter, HARDWARE, HW_CPU_CYCLES)) |
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update_runtime_stat(st, STAT_CYCLES, cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, CYCLES_IN_TX)) |
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update_runtime_stat(st, STAT_CYCLES_IN_TX, cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TRANSACTION_START)) |
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update_runtime_stat(st, STAT_TRANSACTION, cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, ELISION_START)) |
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update_runtime_stat(st, STAT_ELISION, cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TOPDOWN_TOTAL_SLOTS)) |
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update_runtime_stat(st, STAT_TOPDOWN_TOTAL_SLOTS, |
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cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_ISSUED)) |
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update_runtime_stat(st, STAT_TOPDOWN_SLOTS_ISSUED, |
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cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_RETIRED)) |
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update_runtime_stat(st, STAT_TOPDOWN_SLOTS_RETIRED, |
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cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TOPDOWN_FETCH_BUBBLES)) |
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update_runtime_stat(st, STAT_TOPDOWN_FETCH_BUBBLES, |
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cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TOPDOWN_RECOVERY_BUBBLES)) |
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update_runtime_stat(st, STAT_TOPDOWN_RECOVERY_BUBBLES, |
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cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TOPDOWN_RETIRING)) |
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update_runtime_stat(st, STAT_TOPDOWN_RETIRING, |
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cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TOPDOWN_BAD_SPEC)) |
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update_runtime_stat(st, STAT_TOPDOWN_BAD_SPEC, |
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cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TOPDOWN_FE_BOUND)) |
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update_runtime_stat(st, STAT_TOPDOWN_FE_BOUND, |
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cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TOPDOWN_BE_BOUND)) |
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update_runtime_stat(st, STAT_TOPDOWN_BE_BOUND, |
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cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TOPDOWN_HEAVY_OPS)) |
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update_runtime_stat(st, STAT_TOPDOWN_HEAVY_OPS, |
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cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TOPDOWN_BR_MISPREDICT)) |
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update_runtime_stat(st, STAT_TOPDOWN_BR_MISPREDICT, |
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cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TOPDOWN_FETCH_LAT)) |
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update_runtime_stat(st, STAT_TOPDOWN_FETCH_LAT, |
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cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, TOPDOWN_MEM_BOUND)) |
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update_runtime_stat(st, STAT_TOPDOWN_MEM_BOUND, |
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cpu, count, &rsd); |
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else if (evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) |
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update_runtime_stat(st, STAT_STALLED_CYCLES_FRONT, |
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cpu, count, &rsd); |
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else if (evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND)) |
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update_runtime_stat(st, STAT_STALLED_CYCLES_BACK, |
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cpu, count, &rsd); |
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else if (evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS)) |
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update_runtime_stat(st, STAT_BRANCHES, cpu, count, &rsd); |
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else if (evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES)) |
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update_runtime_stat(st, STAT_CACHEREFS, cpu, count, &rsd); |
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else if (evsel__match(counter, HW_CACHE, HW_CACHE_L1D)) |
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update_runtime_stat(st, STAT_L1_DCACHE, cpu, count, &rsd); |
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else if (evsel__match(counter, HW_CACHE, HW_CACHE_L1I)) |
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update_runtime_stat(st, STAT_L1_ICACHE, cpu, count, &rsd); |
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else if (evsel__match(counter, HW_CACHE, HW_CACHE_LL)) |
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update_runtime_stat(st, STAT_LL_CACHE, cpu, count, &rsd); |
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else if (evsel__match(counter, HW_CACHE, HW_CACHE_DTLB)) |
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update_runtime_stat(st, STAT_DTLB_CACHE, cpu, count, &rsd); |
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else if (evsel__match(counter, HW_CACHE, HW_CACHE_ITLB)) |
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update_runtime_stat(st, STAT_ITLB_CACHE, cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, SMI_NUM)) |
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update_runtime_stat(st, STAT_SMI_NUM, cpu, count, &rsd); |
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else if (perf_stat_evsel__is(counter, APERF)) |
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update_runtime_stat(st, STAT_APERF, cpu, count, &rsd); |
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|
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if (counter->collect_stat) { |
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v = saved_value_lookup(counter, cpu, true, STAT_NONE, 0, st, |
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rsd.cgrp); |
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update_stats(&v->stats, count); |
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if (counter->metric_leader) |
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v->metric_total += count; |
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} else if (counter->metric_leader) { |
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v = saved_value_lookup(counter->metric_leader, |
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cpu, true, STAT_NONE, 0, st, rsd.cgrp); |
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v->metric_total += count; |
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v->metric_other++; |
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} |
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} |
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|
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/* used for get_ratio_color() */ |
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enum grc_type { |
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GRC_STALLED_CYCLES_FE, |
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GRC_STALLED_CYCLES_BE, |
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GRC_CACHE_MISSES, |
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GRC_MAX_NR |
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}; |
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|
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static const char *get_ratio_color(enum grc_type type, double ratio) |
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{ |
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static const double grc_table[GRC_MAX_NR][3] = { |
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[GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 }, |
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[GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 }, |
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[GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 }, |
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}; |
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const char *color = PERF_COLOR_NORMAL; |
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|
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if (ratio > grc_table[type][0]) |
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color = PERF_COLOR_RED; |
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else if (ratio > grc_table[type][1]) |
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color = PERF_COLOR_MAGENTA; |
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else if (ratio > grc_table[type][2]) |
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color = PERF_COLOR_YELLOW; |
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|
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return color; |
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} |
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|
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static struct evsel *perf_stat__find_event(struct evlist *evsel_list, |
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const char *name) |
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{ |
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struct evsel *c2; |
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|
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evlist__for_each_entry (evsel_list, c2) { |
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if (!strcasecmp(c2->name, name) && !c2->collect_stat) |
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return c2; |
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} |
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return NULL; |
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} |
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|
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/* Mark MetricExpr target events and link events using them to them. */ |
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void perf_stat__collect_metric_expr(struct evlist *evsel_list) |
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{ |
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struct evsel *counter, *leader, **metric_events, *oc; |
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bool found; |
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struct expr_parse_ctx ctx; |
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struct hashmap_entry *cur; |
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size_t bkt; |
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int i; |
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|
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expr__ctx_init(&ctx); |
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evlist__for_each_entry(evsel_list, counter) { |
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bool invalid = false; |
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|
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leader = evsel__leader(counter); |
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if (!counter->metric_expr) |
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continue; |
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|
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expr__ctx_clear(&ctx); |
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metric_events = counter->metric_events; |
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if (!metric_events) { |
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if (expr__find_other(counter->metric_expr, |
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counter->name, |
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&ctx, 1) < 0) |
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continue; |
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|
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metric_events = calloc(sizeof(struct evsel *), |
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hashmap__size(&ctx.ids) + 1); |
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if (!metric_events) { |
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expr__ctx_clear(&ctx); |
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return; |
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} |
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counter->metric_events = metric_events; |
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} |
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|
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i = 0; |
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hashmap__for_each_entry((&ctx.ids), cur, bkt) { |
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const char *metric_name = (const char *)cur->key; |
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|
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found = false; |
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if (leader) { |
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/* Search in group */ |
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for_each_group_member (oc, leader) { |
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if (!strcasecmp(oc->name, |
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metric_name) && |
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!oc->collect_stat) { |
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found = true; |
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break; |
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} |
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} |
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} |
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if (!found) { |
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/* Search ignoring groups */ |
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oc = perf_stat__find_event(evsel_list, |
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metric_name); |
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} |
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if (!oc) { |
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/* Deduping one is good enough to handle duplicated PMUs. */ |
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static char *printed; |
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|
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/* |
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* Adding events automatically would be difficult, because |
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* it would risk creating groups that are not schedulable. |
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* perf stat doesn't understand all the scheduling constraints |
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* of events. So we ask the user instead to add the missing |
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* events. |
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*/ |
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if (!printed || |
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strcasecmp(printed, metric_name)) { |
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fprintf(stderr, |
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"Add %s event to groups to get metric expression for %s\n", |
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metric_name, |
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counter->name); |
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printed = strdup(metric_name); |
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} |
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invalid = true; |
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continue; |
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} |
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metric_events[i++] = oc; |
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oc->collect_stat = true; |
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} |
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metric_events[i] = NULL; |
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if (invalid) { |
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free(metric_events); |
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counter->metric_events = NULL; |
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counter->metric_expr = NULL; |
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} |
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} |
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expr__ctx_clear(&ctx); |
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} |
|
|
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static double runtime_stat_avg(struct runtime_stat *st, |
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enum stat_type type, int cpu, |
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struct runtime_stat_data *rsd) |
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{ |
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struct saved_value *v; |
|
|
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v = saved_value_lookup(NULL, cpu, false, type, rsd->ctx, st, rsd->cgrp); |
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if (!v) |
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return 0.0; |
|
|
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return avg_stats(&v->stats); |
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} |
|
|
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static double runtime_stat_n(struct runtime_stat *st, |
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enum stat_type type, int cpu, |
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struct runtime_stat_data *rsd) |
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{ |
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struct saved_value *v; |
|
|
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v = saved_value_lookup(NULL, cpu, false, type, rsd->ctx, st, rsd->cgrp); |
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if (!v) |
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return 0.0; |
|
|
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return v->stats.n; |
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} |
|
|
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static void print_stalled_cycles_frontend(struct perf_stat_config *config, |
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int cpu, double avg, |
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struct perf_stat_output_ctx *out, |
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struct runtime_stat *st, |
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struct runtime_stat_data *rsd) |
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{ |
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double total, ratio = 0.0; |
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const char *color; |
|
|
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total = runtime_stat_avg(st, STAT_CYCLES, cpu, rsd); |
|
|
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if (total) |
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ratio = avg / total * 100.0; |
|
|
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color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio); |
|
|
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if (ratio) |
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out->print_metric(config, out->ctx, color, "%7.2f%%", "frontend cycles idle", |
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ratio); |
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else |
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out->print_metric(config, out->ctx, NULL, NULL, "frontend cycles idle", 0); |
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} |
|
|
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static void print_stalled_cycles_backend(struct perf_stat_config *config, |
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int cpu, double avg, |
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struct perf_stat_output_ctx *out, |
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struct runtime_stat *st, |
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struct runtime_stat_data *rsd) |
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{ |
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double total, ratio = 0.0; |
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const char *color; |
|
|
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total = runtime_stat_avg(st, STAT_CYCLES, cpu, rsd); |
|
|
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if (total) |
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ratio = avg / total * 100.0; |
|
|
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color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio); |
|
|
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out->print_metric(config, out->ctx, color, "%7.2f%%", "backend cycles idle", ratio); |
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} |
|
|
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static void print_branch_misses(struct perf_stat_config *config, |
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int cpu, double avg, |
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struct perf_stat_output_ctx *out, |
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struct runtime_stat *st, |
|
struct runtime_stat_data *rsd) |
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{ |
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double total, ratio = 0.0; |
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const char *color; |
|
|
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total = runtime_stat_avg(st, STAT_BRANCHES, cpu, rsd); |
|
|
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if (total) |
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ratio = avg / total * 100.0; |
|
|
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color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
|
|
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out->print_metric(config, out->ctx, color, "%7.2f%%", "of all branches", ratio); |
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} |
|
|
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static void print_l1_dcache_misses(struct perf_stat_config *config, |
|
int cpu, double avg, |
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struct perf_stat_output_ctx *out, |
|
struct runtime_stat *st, |
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struct runtime_stat_data *rsd) |
|
{ |
|
double total, ratio = 0.0; |
|
const char *color; |
|
|
|
total = runtime_stat_avg(st, STAT_L1_DCACHE, cpu, rsd); |
|
|
|
if (total) |
|
ratio = avg / total * 100.0; |
|
|
|
color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
|
|
|
out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-dcache accesses", ratio); |
|
} |
|
|
|
static void print_l1_icache_misses(struct perf_stat_config *config, |
|
int cpu, double avg, |
|
struct perf_stat_output_ctx *out, |
|
struct runtime_stat *st, |
|
struct runtime_stat_data *rsd) |
|
{ |
|
double total, ratio = 0.0; |
|
const char *color; |
|
|
|
total = runtime_stat_avg(st, STAT_L1_ICACHE, cpu, rsd); |
|
|
|
if (total) |
|
ratio = avg / total * 100.0; |
|
|
|
color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
|
out->print_metric(config, out->ctx, color, "%7.2f%%", "of all L1-icache accesses", ratio); |
|
} |
|
|
|
static void print_dtlb_cache_misses(struct perf_stat_config *config, |
|
int cpu, double avg, |
|
struct perf_stat_output_ctx *out, |
|
struct runtime_stat *st, |
|
struct runtime_stat_data *rsd) |
|
{ |
|
double total, ratio = 0.0; |
|
const char *color; |
|
|
|
total = runtime_stat_avg(st, STAT_DTLB_CACHE, cpu, rsd); |
|
|
|
if (total) |
|
ratio = avg / total * 100.0; |
|
|
|
color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
|
out->print_metric(config, out->ctx, color, "%7.2f%%", "of all dTLB cache accesses", ratio); |
|
} |
|
|
|
static void print_itlb_cache_misses(struct perf_stat_config *config, |
|
int cpu, double avg, |
|
struct perf_stat_output_ctx *out, |
|
struct runtime_stat *st, |
|
struct runtime_stat_data *rsd) |
|
{ |
|
double total, ratio = 0.0; |
|
const char *color; |
|
|
|
total = runtime_stat_avg(st, STAT_ITLB_CACHE, cpu, rsd); |
|
|
|
if (total) |
|
ratio = avg / total * 100.0; |
|
|
|
color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
|
out->print_metric(config, out->ctx, color, "%7.2f%%", "of all iTLB cache accesses", ratio); |
|
} |
|
|
|
static void print_ll_cache_misses(struct perf_stat_config *config, |
|
int cpu, double avg, |
|
struct perf_stat_output_ctx *out, |
|
struct runtime_stat *st, |
|
struct runtime_stat_data *rsd) |
|
{ |
|
double total, ratio = 0.0; |
|
const char *color; |
|
|
|
total = runtime_stat_avg(st, STAT_LL_CACHE, cpu, rsd); |
|
|
|
if (total) |
|
ratio = avg / total * 100.0; |
|
|
|
color = get_ratio_color(GRC_CACHE_MISSES, ratio); |
|
out->print_metric(config, out->ctx, color, "%7.2f%%", "of all LL-cache accesses", ratio); |
|
} |
|
|
|
/* |
|
* High level "TopDown" CPU core pipe line bottleneck break down. |
|
* |
|
* Basic concept following |
|
* Yasin, A Top Down Method for Performance analysis and Counter architecture |
|
* ISPASS14 |
|
* |
|
* The CPU pipeline is divided into 4 areas that can be bottlenecks: |
|
* |
|
* Frontend -> Backend -> Retiring |
|
* BadSpeculation in addition means out of order execution that is thrown away |
|
* (for example branch mispredictions) |
|
* Frontend is instruction decoding. |
|
* Backend is execution, like computation and accessing data in memory |
|
* Retiring is good execution that is not directly bottlenecked |
|
* |
|
* The formulas are computed in slots. |
|
* A slot is an entry in the pipeline each for the pipeline width |
|
* (for example a 4-wide pipeline has 4 slots for each cycle) |
|
* |
|
* Formulas: |
|
* BadSpeculation = ((SlotsIssued - SlotsRetired) + RecoveryBubbles) / |
|
* TotalSlots |
|
* Retiring = SlotsRetired / TotalSlots |
|
* FrontendBound = FetchBubbles / TotalSlots |
|
* BackendBound = 1.0 - BadSpeculation - Retiring - FrontendBound |
|
* |
|
* The kernel provides the mapping to the low level CPU events and any scaling |
|
* needed for the CPU pipeline width, for example: |
|
* |
|
* TotalSlots = Cycles * 4 |
|
* |
|
* The scaling factor is communicated in the sysfs unit. |
|
* |
|
* In some cases the CPU may not be able to measure all the formulas due to |
|
* missing events. In this case multiple formulas are combined, as possible. |
|
* |
|
* Full TopDown supports more levels to sub-divide each area: for example |
|
* BackendBound into computing bound and memory bound. For now we only |
|
* support Level 1 TopDown. |
|
*/ |
|
|
|
static double sanitize_val(double x) |
|
{ |
|
if (x < 0 && x >= -0.02) |
|
return 0.0; |
|
return x; |
|
} |
|
|
|
static double td_total_slots(int cpu, struct runtime_stat *st, |
|
struct runtime_stat_data *rsd) |
|
{ |
|
return runtime_stat_avg(st, STAT_TOPDOWN_TOTAL_SLOTS, cpu, rsd); |
|
} |
|
|
|
static double td_bad_spec(int cpu, struct runtime_stat *st, |
|
struct runtime_stat_data *rsd) |
|
{ |
|
double bad_spec = 0; |
|
double total_slots; |
|
double total; |
|
|
|
total = runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_ISSUED, cpu, rsd) - |
|
runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_RETIRED, cpu, rsd) + |
|
runtime_stat_avg(st, STAT_TOPDOWN_RECOVERY_BUBBLES, cpu, rsd); |
|
|
|
total_slots = td_total_slots(cpu, st, rsd); |
|
if (total_slots) |
|
bad_spec = total / total_slots; |
|
return sanitize_val(bad_spec); |
|
} |
|
|
|
static double td_retiring(int cpu, struct runtime_stat *st, |
|
struct runtime_stat_data *rsd) |
|
{ |
|
double retiring = 0; |
|
double total_slots = td_total_slots(cpu, st, rsd); |
|
double ret_slots = runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_RETIRED, |
|
cpu, rsd); |
|
|
|
if (total_slots) |
|
retiring = ret_slots / total_slots; |
|
return retiring; |
|
} |
|
|
|
static double td_fe_bound(int cpu, struct runtime_stat *st, |
|
struct runtime_stat_data *rsd) |
|
{ |
|
double fe_bound = 0; |
|
double total_slots = td_total_slots(cpu, st, rsd); |
|
double fetch_bub = runtime_stat_avg(st, STAT_TOPDOWN_FETCH_BUBBLES, |
|
cpu, rsd); |
|
|
|
if (total_slots) |
|
fe_bound = fetch_bub / total_slots; |
|
return fe_bound; |
|
} |
|
|
|
static double td_be_bound(int cpu, struct runtime_stat *st, |
|
struct runtime_stat_data *rsd) |
|
{ |
|
double sum = (td_fe_bound(cpu, st, rsd) + |
|
td_bad_spec(cpu, st, rsd) + |
|
td_retiring(cpu, st, rsd)); |
|
if (sum == 0) |
|
return 0; |
|
return sanitize_val(1.0 - sum); |
|
} |
|
|
|
/* |
|
* Kernel reports metrics multiplied with slots. To get back |
|
* the ratios we need to recreate the sum. |
|
*/ |
|
|
|
static double td_metric_ratio(int cpu, enum stat_type type, |
|
struct runtime_stat *stat, |
|
struct runtime_stat_data *rsd) |
|
{ |
|
double sum = runtime_stat_avg(stat, STAT_TOPDOWN_RETIRING, cpu, rsd) + |
|
runtime_stat_avg(stat, STAT_TOPDOWN_FE_BOUND, cpu, rsd) + |
|
runtime_stat_avg(stat, STAT_TOPDOWN_BE_BOUND, cpu, rsd) + |
|
runtime_stat_avg(stat, STAT_TOPDOWN_BAD_SPEC, cpu, rsd); |
|
double d = runtime_stat_avg(stat, type, cpu, rsd); |
|
|
|
if (sum) |
|
return d / sum; |
|
return 0; |
|
} |
|
|
|
/* |
|
* ... but only if most of the values are actually available. |
|
* We allow two missing. |
|
*/ |
|
|
|
static bool full_td(int cpu, struct runtime_stat *stat, |
|
struct runtime_stat_data *rsd) |
|
{ |
|
int c = 0; |
|
|
|
if (runtime_stat_avg(stat, STAT_TOPDOWN_RETIRING, cpu, rsd) > 0) |
|
c++; |
|
if (runtime_stat_avg(stat, STAT_TOPDOWN_BE_BOUND, cpu, rsd) > 0) |
|
c++; |
|
if (runtime_stat_avg(stat, STAT_TOPDOWN_FE_BOUND, cpu, rsd) > 0) |
|
c++; |
|
if (runtime_stat_avg(stat, STAT_TOPDOWN_BAD_SPEC, cpu, rsd) > 0) |
|
c++; |
|
return c >= 2; |
|
} |
|
|
|
static void print_smi_cost(struct perf_stat_config *config, int cpu, |
|
struct perf_stat_output_ctx *out, |
|
struct runtime_stat *st, |
|
struct runtime_stat_data *rsd) |
|
{ |
|
double smi_num, aperf, cycles, cost = 0.0; |
|
const char *color = NULL; |
|
|
|
smi_num = runtime_stat_avg(st, STAT_SMI_NUM, cpu, rsd); |
|
aperf = runtime_stat_avg(st, STAT_APERF, cpu, rsd); |
|
cycles = runtime_stat_avg(st, STAT_CYCLES, cpu, rsd); |
|
|
|
if ((cycles == 0) || (aperf == 0)) |
|
return; |
|
|
|
if (smi_num) |
|
cost = (aperf - cycles) / aperf * 100.00; |
|
|
|
if (cost > 10) |
|
color = PERF_COLOR_RED; |
|
out->print_metric(config, out->ctx, color, "%8.1f%%", "SMI cycles%", cost); |
|
out->print_metric(config, out->ctx, NULL, "%4.0f", "SMI#", smi_num); |
|
} |
|
|
|
static int prepare_metric(struct evsel **metric_events, |
|
struct metric_ref *metric_refs, |
|
struct expr_parse_ctx *pctx, |
|
int cpu, |
|
struct runtime_stat *st) |
|
{ |
|
double scale; |
|
char *n, *pn; |
|
int i, j, ret; |
|
|
|
expr__ctx_init(pctx); |
|
for (i = 0; metric_events[i]; i++) { |
|
struct saved_value *v; |
|
struct stats *stats; |
|
u64 metric_total = 0; |
|
|
|
if (!strcmp(metric_events[i]->name, "duration_time")) { |
|
stats = &walltime_nsecs_stats; |
|
scale = 1e-9; |
|
} else { |
|
v = saved_value_lookup(metric_events[i], cpu, false, |
|
STAT_NONE, 0, st, |
|
metric_events[i]->cgrp); |
|
if (!v) |
|
break; |
|
stats = &v->stats; |
|
scale = 1.0; |
|
|
|
if (v->metric_other) |
|
metric_total = v->metric_total; |
|
} |
|
|
|
n = strdup(metric_events[i]->name); |
|
if (!n) |
|
return -ENOMEM; |
|
/* |
|
* This display code with --no-merge adds [cpu] postfixes. |
|
* These are not supported by the parser. Remove everything |
|
* after the space. |
|
*/ |
|
pn = strchr(n, ' '); |
|
if (pn) |
|
*pn = 0; |
|
|
|
if (metric_total) |
|
expr__add_id_val(pctx, n, metric_total); |
|
else |
|
expr__add_id_val(pctx, n, avg_stats(stats)*scale); |
|
} |
|
|
|
for (j = 0; metric_refs && metric_refs[j].metric_name; j++) { |
|
ret = expr__add_ref(pctx, &metric_refs[j]); |
|
if (ret) |
|
return ret; |
|
} |
|
|
|
return i; |
|
} |
|
|
|
static void generic_metric(struct perf_stat_config *config, |
|
const char *metric_expr, |
|
struct evsel **metric_events, |
|
struct metric_ref *metric_refs, |
|
char *name, |
|
const char *metric_name, |
|
const char *metric_unit, |
|
int runtime, |
|
int cpu, |
|
struct perf_stat_output_ctx *out, |
|
struct runtime_stat *st) |
|
{ |
|
print_metric_t print_metric = out->print_metric; |
|
struct expr_parse_ctx pctx; |
|
double ratio, scale; |
|
int i; |
|
void *ctxp = out->ctx; |
|
|
|
i = prepare_metric(metric_events, metric_refs, &pctx, cpu, st); |
|
if (i < 0) |
|
return; |
|
|
|
if (!metric_events[i]) { |
|
if (expr__parse(&ratio, &pctx, metric_expr, runtime) == 0) { |
|
char *unit; |
|
char metric_bf[64]; |
|
|
|
if (metric_unit && metric_name) { |
|
if (perf_pmu__convert_scale(metric_unit, |
|
&unit, &scale) >= 0) { |
|
ratio *= scale; |
|
} |
|
if (strstr(metric_expr, "?")) |
|
scnprintf(metric_bf, sizeof(metric_bf), |
|
"%s %s_%d", unit, metric_name, runtime); |
|
else |
|
scnprintf(metric_bf, sizeof(metric_bf), |
|
"%s %s", unit, metric_name); |
|
|
|
print_metric(config, ctxp, NULL, "%8.1f", |
|
metric_bf, ratio); |
|
} else { |
|
print_metric(config, ctxp, NULL, "%8.2f", |
|
metric_name ? |
|
metric_name : |
|
out->force_header ? name : "", |
|
ratio); |
|
} |
|
} else { |
|
print_metric(config, ctxp, NULL, NULL, |
|
out->force_header ? |
|
(metric_name ? metric_name : name) : "", 0); |
|
} |
|
} else { |
|
print_metric(config, ctxp, NULL, NULL, |
|
out->force_header ? |
|
(metric_name ? metric_name : name) : "", 0); |
|
} |
|
|
|
expr__ctx_clear(&pctx); |
|
} |
|
|
|
double test_generic_metric(struct metric_expr *mexp, int cpu, struct runtime_stat *st) |
|
{ |
|
struct expr_parse_ctx pctx; |
|
double ratio = 0.0; |
|
|
|
if (prepare_metric(mexp->metric_events, mexp->metric_refs, &pctx, cpu, st) < 0) |
|
goto out; |
|
|
|
if (expr__parse(&ratio, &pctx, mexp->metric_expr, 1)) |
|
ratio = 0.0; |
|
|
|
out: |
|
expr__ctx_clear(&pctx); |
|
return ratio; |
|
} |
|
|
|
void perf_stat__print_shadow_stats(struct perf_stat_config *config, |
|
struct evsel *evsel, |
|
double avg, int cpu, |
|
struct perf_stat_output_ctx *out, |
|
struct rblist *metric_events, |
|
struct runtime_stat *st) |
|
{ |
|
void *ctxp = out->ctx; |
|
print_metric_t print_metric = out->print_metric; |
|
double total, ratio = 0.0, total2; |
|
const char *color = NULL; |
|
struct runtime_stat_data rsd = { |
|
.ctx = evsel_context(evsel), |
|
.cgrp = evsel->cgrp, |
|
}; |
|
struct metric_event *me; |
|
int num = 1; |
|
|
|
if (config->iostat_run) { |
|
iostat_print_metric(config, evsel, out); |
|
} else if (evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) { |
|
total = runtime_stat_avg(st, STAT_CYCLES, cpu, &rsd); |
|
|
|
if (total) { |
|
ratio = avg / total; |
|
print_metric(config, ctxp, NULL, "%7.2f ", |
|
"insn per cycle", ratio); |
|
} else { |
|
print_metric(config, ctxp, NULL, NULL, "insn per cycle", 0); |
|
} |
|
|
|
total = runtime_stat_avg(st, STAT_STALLED_CYCLES_FRONT, cpu, &rsd); |
|
|
|
total = max(total, runtime_stat_avg(st, |
|
STAT_STALLED_CYCLES_BACK, |
|
cpu, &rsd)); |
|
|
|
if (total && avg) { |
|
out->new_line(config, ctxp); |
|
ratio = total / avg; |
|
print_metric(config, ctxp, NULL, "%7.2f ", |
|
"stalled cycles per insn", |
|
ratio); |
|
} |
|
} else if (evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES)) { |
|
if (runtime_stat_n(st, STAT_BRANCHES, cpu, &rsd) != 0) |
|
print_branch_misses(config, cpu, avg, out, st, &rsd); |
|
else |
|
print_metric(config, ctxp, NULL, NULL, "of all branches", 0); |
|
} else if ( |
|
evsel->core.attr.type == PERF_TYPE_HW_CACHE && |
|
evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_L1D | |
|
((PERF_COUNT_HW_CACHE_OP_READ) << 8) | |
|
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) { |
|
|
|
if (runtime_stat_n(st, STAT_L1_DCACHE, cpu, &rsd) != 0) |
|
print_l1_dcache_misses(config, cpu, avg, out, st, &rsd); |
|
else |
|
print_metric(config, ctxp, NULL, NULL, "of all L1-dcache accesses", 0); |
|
} else if ( |
|
evsel->core.attr.type == PERF_TYPE_HW_CACHE && |
|
evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_L1I | |
|
((PERF_COUNT_HW_CACHE_OP_READ) << 8) | |
|
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) { |
|
|
|
if (runtime_stat_n(st, STAT_L1_ICACHE, cpu, &rsd) != 0) |
|
print_l1_icache_misses(config, cpu, avg, out, st, &rsd); |
|
else |
|
print_metric(config, ctxp, NULL, NULL, "of all L1-icache accesses", 0); |
|
} else if ( |
|
evsel->core.attr.type == PERF_TYPE_HW_CACHE && |
|
evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_DTLB | |
|
((PERF_COUNT_HW_CACHE_OP_READ) << 8) | |
|
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) { |
|
|
|
if (runtime_stat_n(st, STAT_DTLB_CACHE, cpu, &rsd) != 0) |
|
print_dtlb_cache_misses(config, cpu, avg, out, st, &rsd); |
|
else |
|
print_metric(config, ctxp, NULL, NULL, "of all dTLB cache accesses", 0); |
|
} else if ( |
|
evsel->core.attr.type == PERF_TYPE_HW_CACHE && |
|
evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_ITLB | |
|
((PERF_COUNT_HW_CACHE_OP_READ) << 8) | |
|
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) { |
|
|
|
if (runtime_stat_n(st, STAT_ITLB_CACHE, cpu, &rsd) != 0) |
|
print_itlb_cache_misses(config, cpu, avg, out, st, &rsd); |
|
else |
|
print_metric(config, ctxp, NULL, NULL, "of all iTLB cache accesses", 0); |
|
} else if ( |
|
evsel->core.attr.type == PERF_TYPE_HW_CACHE && |
|
evsel->core.attr.config == ( PERF_COUNT_HW_CACHE_LL | |
|
((PERF_COUNT_HW_CACHE_OP_READ) << 8) | |
|
((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16))) { |
|
|
|
if (runtime_stat_n(st, STAT_LL_CACHE, cpu, &rsd) != 0) |
|
print_ll_cache_misses(config, cpu, avg, out, st, &rsd); |
|
else |
|
print_metric(config, ctxp, NULL, NULL, "of all LL-cache accesses", 0); |
|
} else if (evsel__match(evsel, HARDWARE, HW_CACHE_MISSES)) { |
|
total = runtime_stat_avg(st, STAT_CACHEREFS, cpu, &rsd); |
|
|
|
if (total) |
|
ratio = avg * 100 / total; |
|
|
|
if (runtime_stat_n(st, STAT_CACHEREFS, cpu, &rsd) != 0) |
|
print_metric(config, ctxp, NULL, "%8.3f %%", |
|
"of all cache refs", ratio); |
|
else |
|
print_metric(config, ctxp, NULL, NULL, "of all cache refs", 0); |
|
} else if (evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) { |
|
print_stalled_cycles_frontend(config, cpu, avg, out, st, &rsd); |
|
} else if (evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) { |
|
print_stalled_cycles_backend(config, cpu, avg, out, st, &rsd); |
|
} else if (evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) { |
|
total = runtime_stat_avg(st, STAT_NSECS, cpu, &rsd); |
|
|
|
if (total) { |
|
ratio = avg / total; |
|
print_metric(config, ctxp, NULL, "%8.3f", "GHz", ratio); |
|
} else { |
|
print_metric(config, ctxp, NULL, NULL, "Ghz", 0); |
|
} |
|
} else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX)) { |
|
total = runtime_stat_avg(st, STAT_CYCLES, cpu, &rsd); |
|
|
|
if (total) |
|
print_metric(config, ctxp, NULL, |
|
"%7.2f%%", "transactional cycles", |
|
100.0 * (avg / total)); |
|
else |
|
print_metric(config, ctxp, NULL, NULL, "transactional cycles", |
|
0); |
|
} else if (perf_stat_evsel__is(evsel, CYCLES_IN_TX_CP)) { |
|
total = runtime_stat_avg(st, STAT_CYCLES, cpu, &rsd); |
|
total2 = runtime_stat_avg(st, STAT_CYCLES_IN_TX, cpu, &rsd); |
|
|
|
if (total2 < avg) |
|
total2 = avg; |
|
if (total) |
|
print_metric(config, ctxp, NULL, "%7.2f%%", "aborted cycles", |
|
100.0 * ((total2-avg) / total)); |
|
else |
|
print_metric(config, ctxp, NULL, NULL, "aborted cycles", 0); |
|
} else if (perf_stat_evsel__is(evsel, TRANSACTION_START)) { |
|
total = runtime_stat_avg(st, STAT_CYCLES_IN_TX, cpu, &rsd); |
|
|
|
if (avg) |
|
ratio = total / avg; |
|
|
|
if (runtime_stat_n(st, STAT_CYCLES_IN_TX, cpu, &rsd) != 0) |
|
print_metric(config, ctxp, NULL, "%8.0f", |
|
"cycles / transaction", ratio); |
|
else |
|
print_metric(config, ctxp, NULL, NULL, "cycles / transaction", |
|
0); |
|
} else if (perf_stat_evsel__is(evsel, ELISION_START)) { |
|
total = runtime_stat_avg(st, STAT_CYCLES_IN_TX, cpu, &rsd); |
|
|
|
if (avg) |
|
ratio = total / avg; |
|
|
|
print_metric(config, ctxp, NULL, "%8.0f", "cycles / elision", ratio); |
|
} else if (evsel__is_clock(evsel)) { |
|
if ((ratio = avg_stats(&walltime_nsecs_stats)) != 0) |
|
print_metric(config, ctxp, NULL, "%8.3f", "CPUs utilized", |
|
avg / (ratio * evsel->scale)); |
|
else |
|
print_metric(config, ctxp, NULL, NULL, "CPUs utilized", 0); |
|
} else if (perf_stat_evsel__is(evsel, TOPDOWN_FETCH_BUBBLES)) { |
|
double fe_bound = td_fe_bound(cpu, st, &rsd); |
|
|
|
if (fe_bound > 0.2) |
|
color = PERF_COLOR_RED; |
|
print_metric(config, ctxp, color, "%8.1f%%", "frontend bound", |
|
fe_bound * 100.); |
|
} else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_RETIRED)) { |
|
double retiring = td_retiring(cpu, st, &rsd); |
|
|
|
if (retiring > 0.7) |
|
color = PERF_COLOR_GREEN; |
|
print_metric(config, ctxp, color, "%8.1f%%", "retiring", |
|
retiring * 100.); |
|
} else if (perf_stat_evsel__is(evsel, TOPDOWN_RECOVERY_BUBBLES)) { |
|
double bad_spec = td_bad_spec(cpu, st, &rsd); |
|
|
|
if (bad_spec > 0.1) |
|
color = PERF_COLOR_RED; |
|
print_metric(config, ctxp, color, "%8.1f%%", "bad speculation", |
|
bad_spec * 100.); |
|
} else if (perf_stat_evsel__is(evsel, TOPDOWN_SLOTS_ISSUED)) { |
|
double be_bound = td_be_bound(cpu, st, &rsd); |
|
const char *name = "backend bound"; |
|
static int have_recovery_bubbles = -1; |
|
|
|
/* In case the CPU does not support topdown-recovery-bubbles */ |
|
if (have_recovery_bubbles < 0) |
|
have_recovery_bubbles = pmu_have_event("cpu", |
|
"topdown-recovery-bubbles"); |
|
if (!have_recovery_bubbles) |
|
name = "backend bound/bad spec"; |
|
|
|
if (be_bound > 0.2) |
|
color = PERF_COLOR_RED; |
|
if (td_total_slots(cpu, st, &rsd) > 0) |
|
print_metric(config, ctxp, color, "%8.1f%%", name, |
|
be_bound * 100.); |
|
else |
|
print_metric(config, ctxp, NULL, NULL, name, 0); |
|
} else if (perf_stat_evsel__is(evsel, TOPDOWN_RETIRING) && |
|
full_td(cpu, st, &rsd)) { |
|
double retiring = td_metric_ratio(cpu, |
|
STAT_TOPDOWN_RETIRING, st, |
|
&rsd); |
|
if (retiring > 0.7) |
|
color = PERF_COLOR_GREEN; |
|
print_metric(config, ctxp, color, "%8.1f%%", "retiring", |
|
retiring * 100.); |
|
} else if (perf_stat_evsel__is(evsel, TOPDOWN_FE_BOUND) && |
|
full_td(cpu, st, &rsd)) { |
|
double fe_bound = td_metric_ratio(cpu, |
|
STAT_TOPDOWN_FE_BOUND, st, |
|
&rsd); |
|
if (fe_bound > 0.2) |
|
color = PERF_COLOR_RED; |
|
print_metric(config, ctxp, color, "%8.1f%%", "frontend bound", |
|
fe_bound * 100.); |
|
} else if (perf_stat_evsel__is(evsel, TOPDOWN_BE_BOUND) && |
|
full_td(cpu, st, &rsd)) { |
|
double be_bound = td_metric_ratio(cpu, |
|
STAT_TOPDOWN_BE_BOUND, st, |
|
&rsd); |
|
if (be_bound > 0.2) |
|
color = PERF_COLOR_RED; |
|
print_metric(config, ctxp, color, "%8.1f%%", "backend bound", |
|
be_bound * 100.); |
|
} else if (perf_stat_evsel__is(evsel, TOPDOWN_BAD_SPEC) && |
|
full_td(cpu, st, &rsd)) { |
|
double bad_spec = td_metric_ratio(cpu, |
|
STAT_TOPDOWN_BAD_SPEC, st, |
|
&rsd); |
|
if (bad_spec > 0.1) |
|
color = PERF_COLOR_RED; |
|
print_metric(config, ctxp, color, "%8.1f%%", "bad speculation", |
|
bad_spec * 100.); |
|
} else if (perf_stat_evsel__is(evsel, TOPDOWN_HEAVY_OPS) && |
|
full_td(cpu, st, &rsd) && (config->topdown_level > 1)) { |
|
double retiring = td_metric_ratio(cpu, |
|
STAT_TOPDOWN_RETIRING, st, |
|
&rsd); |
|
double heavy_ops = td_metric_ratio(cpu, |
|
STAT_TOPDOWN_HEAVY_OPS, st, |
|
&rsd); |
|
double light_ops = retiring - heavy_ops; |
|
|
|
if (retiring > 0.7 && heavy_ops > 0.1) |
|
color = PERF_COLOR_GREEN; |
|
print_metric(config, ctxp, color, "%8.1f%%", "heavy operations", |
|
heavy_ops * 100.); |
|
if (retiring > 0.7 && light_ops > 0.6) |
|
color = PERF_COLOR_GREEN; |
|
else |
|
color = NULL; |
|
print_metric(config, ctxp, color, "%8.1f%%", "light operations", |
|
light_ops * 100.); |
|
} else if (perf_stat_evsel__is(evsel, TOPDOWN_BR_MISPREDICT) && |
|
full_td(cpu, st, &rsd) && (config->topdown_level > 1)) { |
|
double bad_spec = td_metric_ratio(cpu, |
|
STAT_TOPDOWN_BAD_SPEC, st, |
|
&rsd); |
|
double br_mis = td_metric_ratio(cpu, |
|
STAT_TOPDOWN_BR_MISPREDICT, st, |
|
&rsd); |
|
double m_clears = bad_spec - br_mis; |
|
|
|
if (bad_spec > 0.1 && br_mis > 0.05) |
|
color = PERF_COLOR_RED; |
|
print_metric(config, ctxp, color, "%8.1f%%", "branch mispredict", |
|
br_mis * 100.); |
|
if (bad_spec > 0.1 && m_clears > 0.05) |
|
color = PERF_COLOR_RED; |
|
else |
|
color = NULL; |
|
print_metric(config, ctxp, color, "%8.1f%%", "machine clears", |
|
m_clears * 100.); |
|
} else if (perf_stat_evsel__is(evsel, TOPDOWN_FETCH_LAT) && |
|
full_td(cpu, st, &rsd) && (config->topdown_level > 1)) { |
|
double fe_bound = td_metric_ratio(cpu, |
|
STAT_TOPDOWN_FE_BOUND, st, |
|
&rsd); |
|
double fetch_lat = td_metric_ratio(cpu, |
|
STAT_TOPDOWN_FETCH_LAT, st, |
|
&rsd); |
|
double fetch_bw = fe_bound - fetch_lat; |
|
|
|
if (fe_bound > 0.2 && fetch_lat > 0.15) |
|
color = PERF_COLOR_RED; |
|
print_metric(config, ctxp, color, "%8.1f%%", "fetch latency", |
|
fetch_lat * 100.); |
|
if (fe_bound > 0.2 && fetch_bw > 0.1) |
|
color = PERF_COLOR_RED; |
|
else |
|
color = NULL; |
|
print_metric(config, ctxp, color, "%8.1f%%", "fetch bandwidth", |
|
fetch_bw * 100.); |
|
} else if (perf_stat_evsel__is(evsel, TOPDOWN_MEM_BOUND) && |
|
full_td(cpu, st, &rsd) && (config->topdown_level > 1)) { |
|
double be_bound = td_metric_ratio(cpu, |
|
STAT_TOPDOWN_BE_BOUND, st, |
|
&rsd); |
|
double mem_bound = td_metric_ratio(cpu, |
|
STAT_TOPDOWN_MEM_BOUND, st, |
|
&rsd); |
|
double core_bound = be_bound - mem_bound; |
|
|
|
if (be_bound > 0.2 && mem_bound > 0.2) |
|
color = PERF_COLOR_RED; |
|
print_metric(config, ctxp, color, "%8.1f%%", "memory bound", |
|
mem_bound * 100.); |
|
if (be_bound > 0.2 && core_bound > 0.1) |
|
color = PERF_COLOR_RED; |
|
else |
|
color = NULL; |
|
print_metric(config, ctxp, color, "%8.1f%%", "Core bound", |
|
core_bound * 100.); |
|
} else if (evsel->metric_expr) { |
|
generic_metric(config, evsel->metric_expr, evsel->metric_events, NULL, |
|
evsel->name, evsel->metric_name, NULL, 1, cpu, out, st); |
|
} else if (runtime_stat_n(st, STAT_NSECS, cpu, &rsd) != 0) { |
|
char unit = ' '; |
|
char unit_buf[10] = "/sec"; |
|
|
|
total = runtime_stat_avg(st, STAT_NSECS, cpu, &rsd); |
|
if (total) |
|
ratio = convert_unit_double(1000000000.0 * avg / total, &unit); |
|
|
|
if (unit != ' ') |
|
snprintf(unit_buf, sizeof(unit_buf), "%c/sec", unit); |
|
print_metric(config, ctxp, NULL, "%8.3f", unit_buf, ratio); |
|
} else if (perf_stat_evsel__is(evsel, SMI_NUM)) { |
|
print_smi_cost(config, cpu, out, st, &rsd); |
|
} else { |
|
num = 0; |
|
} |
|
|
|
if ((me = metricgroup__lookup(metric_events, evsel, false)) != NULL) { |
|
struct metric_expr *mexp; |
|
|
|
list_for_each_entry (mexp, &me->head, nd) { |
|
if (num++ > 0) |
|
out->new_line(config, ctxp); |
|
generic_metric(config, mexp->metric_expr, mexp->metric_events, |
|
mexp->metric_refs, evsel->name, mexp->metric_name, |
|
mexp->metric_unit, mexp->runtime, cpu, out, st); |
|
} |
|
} |
|
if (num == 0) |
|
print_metric(config, ctxp, NULL, NULL, NULL, 0); |
|
}
|
|
|