// SPDX-License-Identifier: GPL-2.0 #include #include #include "evsel.h" #include "stat.h" #include "color.h" #include "debug.h" #include "pmu.h" #include "rblist.h" #include "evlist.h" #include "expr.h" #include "metricgroup.h" #include "cgroup.h" #include "units.h" #include #include "iostat.h" /* * AGGR_GLOBAL: Use CPU 0 * AGGR_SOCKET: Use first CPU of socket * AGGR_DIE: Use first CPU of die * AGGR_CORE: Use first CPU of core * AGGR_NONE: Use matching CPU * AGGR_THREAD: Not supported? */ struct runtime_stat rt_stat; struct stats walltime_nsecs_stats; struct saved_value { struct rb_node rb_node; struct evsel *evsel; enum stat_type type; int ctx; int cpu; struct cgroup *cgrp; struct runtime_stat *stat; struct stats stats; u64 metric_total; int metric_other; }; static int saved_value_cmp(struct rb_node *rb_node, const void *entry) { struct saved_value *a = container_of(rb_node, struct saved_value, rb_node); const struct saved_value *b = entry; if (a->cpu != b->cpu) return a->cpu - b->cpu; /* * Previously the rbtree was used to link generic metrics. * The keys were evsel/cpu. Now the rbtree is extended to support * per-thread shadow stats. For shadow stats case, the keys * are cpu/type/ctx/stat (evsel is NULL). For generic metrics * case, the keys are still evsel/cpu (type/ctx/stat are 0 or NULL). */ if (a->type != b->type) return a->type - b->type; if (a->ctx != b->ctx) return a->ctx - b->ctx; if (a->cgrp != b->cgrp) return (char *)a->cgrp < (char *)b->cgrp ? -1 : +1; if (a->evsel == NULL && b->evsel == NULL) { if (a->stat == b->stat) return 0; if ((char *)a->stat < (char *)b->stat) return -1; return 1; } if (a->evsel == b->evsel) return 0; if ((char *)a->evsel < (char *)b->evsel) return -1; return +1; } static struct rb_node *saved_value_new(struct rblist *rblist __maybe_unused, const void *entry) { struct saved_value *nd = malloc(sizeof(struct saved_value)); if (!nd) return NULL; memcpy(nd, entry, sizeof(struct saved_value)); return &nd->rb_node; } static void saved_value_delete(struct rblist *rblist __maybe_unused, struct rb_node *rb_node) { struct saved_value *v; BUG_ON(!rb_node); v = container_of(rb_node, struct saved_value, rb_node); free(v); } static struct saved_value *saved_value_lookup(struct evsel *evsel, int cpu, bool create, enum stat_type type, int ctx, struct runtime_stat *st, struct cgroup *cgrp) { struct rblist *rblist; struct rb_node *nd; struct saved_value dm = { .cpu = cpu, .evsel = evsel, .type = type, .ctx = ctx, .stat = st, .cgrp = cgrp, }; rblist = &st->value_list; /* don't use context info for clock events */ if (type == STAT_NSECS) dm.ctx = 0; nd = rblist__find(rblist, &dm); if (nd) return container_of(nd, struct saved_value, rb_node); if (create) { rblist__add_node(rblist, &dm); nd = rblist__find(rblist, &dm); if (nd) return container_of(nd, struct saved_value, rb_node); } return NULL; } void runtime_stat__init(struct runtime_stat *st) { struct rblist *rblist = &st->value_list; rblist__init(rblist); rblist->node_cmp = saved_value_cmp; rblist->node_new = saved_value_new; rblist->node_delete = saved_value_delete; } void runtime_stat__exit(struct runtime_stat *st) { rblist__exit(&st->value_list); } void perf_stat__init_shadow_stats(void) { runtime_stat__init(&rt_stat); } static int evsel_context(struct evsel *evsel) { int ctx = 0; if (evsel->core.attr.exclude_kernel) ctx |= CTX_BIT_KERNEL; if (evsel->core.attr.exclude_user) ctx |= CTX_BIT_USER; if (evsel->core.attr.exclude_hv) ctx |= CTX_BIT_HV; if (evsel->core.attr.exclude_host) ctx |= CTX_BIT_HOST; if (evsel->core.attr.exclude_idle) ctx |= CTX_BIT_IDLE; return ctx; } static void reset_stat(struct runtime_stat *st) { struct rblist *rblist; struct rb_node *pos, *next; rblist = &st->value_list; next = rb_first_cached(&rblist->entries); while (next) { pos = next; next = rb_next(pos); memset(&container_of(pos, struct saved_value, rb_node)->stats, 0, sizeof(struct stats)); } } void perf_stat__reset_shadow_stats(void) { reset_stat(&rt_stat); memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats)); } void perf_stat__reset_shadow_per_stat(struct runtime_stat *st) { reset_stat(st); } struct runtime_stat_data { int ctx; struct cgroup *cgrp; }; static void update_runtime_stat(struct runtime_stat *st, enum stat_type type, int cpu, u64 count, struct runtime_stat_data *rsd) { struct saved_value *v = saved_value_lookup(NULL, cpu, true, type, rsd->ctx, st, rsd->cgrp); if (v) update_stats(&v->stats, count); } /* * Update various tracking values we maintain to print * more semantic information such as miss/hit ratios, * instruction rates, etc: */ void perf_stat__update_shadow_stats(struct evsel *counter, u64 count, int cpu, struct runtime_stat *st) { u64 count_ns = count; struct saved_value *v; struct runtime_stat_data rsd = { .ctx = evsel_context(counter), .cgrp = counter->cgrp, }; count *= counter->scale; if (evsel__is_clock(counter)) update_runtime_stat(st, STAT_NSECS, cpu, count_ns, &rsd); else if (evsel__match(counter, HARDWARE, HW_CPU_CYCLES)) update_runtime_stat(st, STAT_CYCLES, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, CYCLES_IN_TX)) update_runtime_stat(st, STAT_CYCLES_IN_TX, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TRANSACTION_START)) update_runtime_stat(st, STAT_TRANSACTION, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, ELISION_START)) update_runtime_stat(st, STAT_ELISION, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TOPDOWN_TOTAL_SLOTS)) update_runtime_stat(st, STAT_TOPDOWN_TOTAL_SLOTS, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_ISSUED)) update_runtime_stat(st, STAT_TOPDOWN_SLOTS_ISSUED, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_RETIRED)) update_runtime_stat(st, STAT_TOPDOWN_SLOTS_RETIRED, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TOPDOWN_FETCH_BUBBLES)) update_runtime_stat(st, STAT_TOPDOWN_FETCH_BUBBLES, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TOPDOWN_RECOVERY_BUBBLES)) update_runtime_stat(st, STAT_TOPDOWN_RECOVERY_BUBBLES, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TOPDOWN_RETIRING)) update_runtime_stat(st, STAT_TOPDOWN_RETIRING, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TOPDOWN_BAD_SPEC)) update_runtime_stat(st, STAT_TOPDOWN_BAD_SPEC, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TOPDOWN_FE_BOUND)) update_runtime_stat(st, STAT_TOPDOWN_FE_BOUND, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TOPDOWN_BE_BOUND)) update_runtime_stat(st, STAT_TOPDOWN_BE_BOUND, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TOPDOWN_HEAVY_OPS)) update_runtime_stat(st, STAT_TOPDOWN_HEAVY_OPS, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TOPDOWN_BR_MISPREDICT)) update_runtime_stat(st, STAT_TOPDOWN_BR_MISPREDICT, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TOPDOWN_FETCH_LAT)) update_runtime_stat(st, STAT_TOPDOWN_FETCH_LAT, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, TOPDOWN_MEM_BOUND)) update_runtime_stat(st, STAT_TOPDOWN_MEM_BOUND, cpu, count, &rsd); else if (evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) update_runtime_stat(st, STAT_STALLED_CYCLES_FRONT, cpu, count, &rsd); else if (evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND)) update_runtime_stat(st, STAT_STALLED_CYCLES_BACK, cpu, count, &rsd); else if (evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS)) update_runtime_stat(st, STAT_BRANCHES, cpu, count, &rsd); else if (evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES)) update_runtime_stat(st, STAT_CACHEREFS, cpu, count, &rsd); else if (evsel__match(counter, HW_CACHE, HW_CACHE_L1D)) update_runtime_stat(st, STAT_L1_DCACHE, cpu, count, &rsd); else if (evsel__match(counter, HW_CACHE, HW_CACHE_L1I)) update_runtime_stat(st, STAT_L1_ICACHE, cpu, count, &rsd); else if (evsel__match(counter, HW_CACHE, HW_CACHE_LL)) update_runtime_stat(st, STAT_LL_CACHE, cpu, count, &rsd); else if (evsel__match(counter, HW_CACHE, HW_CACHE_DTLB)) update_runtime_stat(st, STAT_DTLB_CACHE, cpu, count, &rsd); else if (evsel__match(counter, HW_CACHE, HW_CACHE_ITLB)) update_runtime_stat(st, STAT_ITLB_CACHE, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, SMI_NUM)) update_runtime_stat(st, STAT_SMI_NUM, cpu, count, &rsd); else if (perf_stat_evsel__is(counter, APERF)) update_runtime_stat(st, STAT_APERF, cpu, count, &rsd); if (counter->collect_stat) { v = saved_value_lookup(counter, cpu, true, STAT_NONE, 0, st, rsd.cgrp); update_stats(&v->stats, count); if (counter->metric_leader) v->metric_total += count; } else if (counter->metric_leader) { v = saved_value_lookup(counter->metric_leader, cpu, true, STAT_NONE, 0, st, rsd.cgrp); v->metric_total += count; v->metric_other++; } } /* used for get_ratio_color() */ enum grc_type { GRC_STALLED_CYCLES_FE, GRC_STALLED_CYCLES_BE, GRC_CACHE_MISSES, GRC_MAX_NR }; static const char *get_ratio_color(enum grc_type type, double ratio) { static const double grc_table[GRC_MAX_NR][3] = { [GRC_STALLED_CYCLES_FE] = { 50.0, 30.0, 10.0 }, [GRC_STALLED_CYCLES_BE] = { 75.0, 50.0, 20.0 }, [GRC_CACHE_MISSES] = { 20.0, 10.0, 5.0 }, }; const char *color = PERF_COLOR_NORMAL; if (ratio > grc_table[type][0]) color = PERF_COLOR_RED; else if (ratio > grc_table[type][1]) color = PERF_COLOR_MAGENTA; else if (ratio > grc_table[type][2]) color = PERF_COLOR_YELLOW; return color; } static struct evsel *perf_stat__find_event(struct evlist *evsel_list, const char *name) { struct evsel *c2; evlist__for_each_entry (evsel_list, c2) { if (!strcasecmp(c2->name, name) && !c2->collect_stat) return c2; } return NULL; } /* Mark MetricExpr target events and link events using them to them. */ void perf_stat__collect_metric_expr(struct evlist *evsel_list) { struct evsel *counter, *leader, **metric_events, *oc; bool found; struct expr_parse_ctx *ctx; struct hashmap_entry *cur; size_t bkt; int i; ctx = expr__ctx_new(); if (!ctx) { pr_debug("expr__ctx_new failed"); return; } evlist__for_each_entry(evsel_list, counter) { bool invalid = false; leader = evsel__leader(counter); if (!counter->metric_expr) continue; expr__ctx_clear(ctx); metric_events = counter->metric_events; if (!metric_events) { if (expr__find_ids(counter->metric_expr, counter->name, ctx) < 0) continue; metric_events = calloc(sizeof(struct evsel *), hashmap__size(ctx->ids) + 1); if (!metric_events) { expr__ctx_free(ctx); return; } counter->metric_events = metric_events; } i = 0; hashmap__for_each_entry(ctx->ids, cur, bkt) { const char *metric_name = (const char *)cur->key; found = false; if (leader) { /* Search in group */ for_each_group_member (oc, leader) { if (!strcasecmp(oc->name, metric_name) && !oc->collect_stat) { found = true; break; } } } if (!found) { /* Search ignoring groups */ oc = perf_stat__find_event(evsel_list, metric_name); } if (!oc) { /* Deduping one is good enough to handle duplicated PMUs. */ static char *printed; /* * Adding events automatically would be difficult, because * it would risk creating groups that are not schedulable. * perf stat doesn't understand all the scheduling constraints * of events. So we ask the user instead to add the missing * events. */ if (!printed || strcasecmp(printed, metric_name)) { fprintf(stderr, "Add %s event to groups to get metric expression for %s\n", metric_name, counter->name); printed = strdup(metric_name); } invalid = true; continue; } metric_events[i++] = oc; oc->collect_stat = true; } metric_events[i] = NULL; if (invalid) { free(metric_events); counter->metric_events = NULL; counter->metric_expr = NULL; } } expr__ctx_free(ctx); } static double runtime_stat_avg(struct runtime_stat *st, enum stat_type type, int cpu, struct runtime_stat_data *rsd) { struct saved_value *v; v = saved_value_lookup(NULL, cpu, false, type, rsd->ctx, st, rsd->cgrp); if (!v) return 0.0; return avg_stats(&v->stats); } static double runtime_stat_n(struct runtime_stat *st, enum stat_type type, int cpu, struct runtime_stat_data *rsd) { struct saved_value *v; v = saved_value_lookup(NULL, cpu, false, type, rsd->ctx, st, rsd->cgrp); if (!v) return 0.0; return v->stats.n; } static void print_stalled_cycles_frontend(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_CYCLES, cpu, rsd); if (total) ratio = avg / total * 100.0; color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio); if (ratio) out->print_metric(config, out->ctx, color, "%7.2f%%", "frontend cycles idle", ratio); else out->print_metric(config, out->ctx, NULL, NULL, "frontend cycles idle", 0); } static void print_stalled_cycles_backend(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_CYCLES, cpu, rsd); if (total) ratio = avg / total * 100.0; color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio); out->print_metric(config, out->ctx, color, "%7.2f%%", "backend cycles idle", ratio); } static void print_branch_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_BRANCHES, 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 branches", ratio); } static void print_l1_dcache_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_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; 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; pctx = expr__ctx_new(); if (!pctx) return; pctx->runtime = runtime; i = prepare_metric(metric_events, metric_refs, pctx, cpu, st); if (i < 0) { expr__ctx_free(pctx); return; } if (!metric_events[i]) { if (expr__parse(&ratio, pctx, metric_expr) == 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_free(pctx); } double test_generic_metric(struct metric_expr *mexp, int cpu, struct runtime_stat *st) { struct expr_parse_ctx *pctx; double ratio = 0.0; pctx = expr__ctx_new(); if (!pctx) return NAN; if (prepare_metric(mexp->metric_events, mexp->metric_refs, pctx, cpu, st) < 0) goto out; if (expr__parse(&ratio, pctx, mexp->metric_expr)) ratio = 0.0; out: expr__ctx_free(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); }