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-rw-r--r--tools/perf/util/stat-shadow.c1336
1 files changed, 1336 insertions, 0 deletions
diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
new file mode 100644
index 000000000..07b29fe27
--- /dev/null
+++ b/tools/perf/util/stat-shadow.c
@@ -0,0 +1,1336 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <math.h>
+#include <stdio.h>
+#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 <linux/zalloc.h>
+#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 rusage_stats ru_stats;
+
+struct saved_value {
+ struct rb_node rb_node;
+ struct evsel *evsel;
+ enum stat_type type;
+ int ctx;
+ int map_idx; /* cpu or thread map index */
+ struct cgroup *cgrp;
+ 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->map_idx != b->map_idx)
+ return a->map_idx - b->map_idx;
+
+ /*
+ * 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 == 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 map_idx,
+ 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 = {
+ .map_idx = map_idx,
+ .evsel = evsel,
+ .type = type,
+ .ctx = ctx,
+ .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));
+ memset(&ru_stats, 0, sizeof(ru_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 map_idx, u64 count,
+ struct runtime_stat_data *rsd)
+{
+ struct saved_value *v = saved_value_lookup(NULL, map_idx, 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 map_idx, 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, map_idx, count_ns, &rsd);
+ else if (evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
+ update_runtime_stat(st, STAT_CYCLES, map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, CYCLES_IN_TX))
+ update_runtime_stat(st, STAT_CYCLES_IN_TX, map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TRANSACTION_START))
+ update_runtime_stat(st, STAT_TRANSACTION, map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, ELISION_START))
+ update_runtime_stat(st, STAT_ELISION, map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TOPDOWN_TOTAL_SLOTS))
+ update_runtime_stat(st, STAT_TOPDOWN_TOTAL_SLOTS,
+ map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_ISSUED))
+ update_runtime_stat(st, STAT_TOPDOWN_SLOTS_ISSUED,
+ map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TOPDOWN_SLOTS_RETIRED))
+ update_runtime_stat(st, STAT_TOPDOWN_SLOTS_RETIRED,
+ map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TOPDOWN_FETCH_BUBBLES))
+ update_runtime_stat(st, STAT_TOPDOWN_FETCH_BUBBLES,
+ map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TOPDOWN_RECOVERY_BUBBLES))
+ update_runtime_stat(st, STAT_TOPDOWN_RECOVERY_BUBBLES,
+ map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TOPDOWN_RETIRING))
+ update_runtime_stat(st, STAT_TOPDOWN_RETIRING,
+ map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TOPDOWN_BAD_SPEC))
+ update_runtime_stat(st, STAT_TOPDOWN_BAD_SPEC,
+ map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TOPDOWN_FE_BOUND))
+ update_runtime_stat(st, STAT_TOPDOWN_FE_BOUND,
+ map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TOPDOWN_BE_BOUND))
+ update_runtime_stat(st, STAT_TOPDOWN_BE_BOUND,
+ map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TOPDOWN_HEAVY_OPS))
+ update_runtime_stat(st, STAT_TOPDOWN_HEAVY_OPS,
+ map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TOPDOWN_BR_MISPREDICT))
+ update_runtime_stat(st, STAT_TOPDOWN_BR_MISPREDICT,
+ map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TOPDOWN_FETCH_LAT))
+ update_runtime_stat(st, STAT_TOPDOWN_FETCH_LAT,
+ map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, TOPDOWN_MEM_BOUND))
+ update_runtime_stat(st, STAT_TOPDOWN_MEM_BOUND,
+ map_idx, count, &rsd);
+ else if (evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
+ update_runtime_stat(st, STAT_STALLED_CYCLES_FRONT,
+ map_idx, count, &rsd);
+ else if (evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
+ update_runtime_stat(st, STAT_STALLED_CYCLES_BACK,
+ map_idx, count, &rsd);
+ else if (evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
+ update_runtime_stat(st, STAT_BRANCHES, map_idx, count, &rsd);
+ else if (evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
+ update_runtime_stat(st, STAT_CACHEREFS, map_idx, count, &rsd);
+ else if (evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
+ update_runtime_stat(st, STAT_L1_DCACHE, map_idx, count, &rsd);
+ else if (evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
+ update_runtime_stat(st, STAT_L1_ICACHE, map_idx, count, &rsd);
+ else if (evsel__match(counter, HW_CACHE, HW_CACHE_LL))
+ update_runtime_stat(st, STAT_LL_CACHE, map_idx, count, &rsd);
+ else if (evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
+ update_runtime_stat(st, STAT_DTLB_CACHE, map_idx, count, &rsd);
+ else if (evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
+ update_runtime_stat(st, STAT_ITLB_CACHE, map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, SMI_NUM))
+ update_runtime_stat(st, STAT_SMI_NUM, map_idx, count, &rsd);
+ else if (perf_stat_evsel__is(counter, APERF))
+ update_runtime_stat(st, STAT_APERF, map_idx, count, &rsd);
+
+ if (counter->collect_stat) {
+ v = saved_value_lookup(counter, map_idx, 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,
+ map_idx, 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);
+ free(printed);
+ 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 map_idx,
+ struct runtime_stat_data *rsd)
+{
+ struct saved_value *v;
+
+ v = saved_value_lookup(NULL, map_idx, 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 map_idx,
+ struct runtime_stat_data *rsd)
+{
+ struct saved_value *v;
+
+ v = saved_value_lookup(NULL, map_idx, 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 map_idx, 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, map_idx, 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 map_idx, 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, map_idx, 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 map_idx, 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, map_idx, 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 map_idx, 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, map_idx, 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 map_idx, 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, map_idx, 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 map_idx, 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, map_idx, 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 map_idx, 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, map_idx, 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 map_idx, 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, map_idx, 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 map_idx, struct runtime_stat *st,
+ struct runtime_stat_data *rsd)
+{
+ return runtime_stat_avg(st, STAT_TOPDOWN_TOTAL_SLOTS, map_idx, rsd);
+}
+
+static double td_bad_spec(int map_idx, 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, map_idx, rsd) -
+ runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_RETIRED, map_idx, rsd) +
+ runtime_stat_avg(st, STAT_TOPDOWN_RECOVERY_BUBBLES, map_idx, rsd);
+
+ total_slots = td_total_slots(map_idx, st, rsd);
+ if (total_slots)
+ bad_spec = total / total_slots;
+ return sanitize_val(bad_spec);
+}
+
+static double td_retiring(int map_idx, struct runtime_stat *st,
+ struct runtime_stat_data *rsd)
+{
+ double retiring = 0;
+ double total_slots = td_total_slots(map_idx, st, rsd);
+ double ret_slots = runtime_stat_avg(st, STAT_TOPDOWN_SLOTS_RETIRED,
+ map_idx, rsd);
+
+ if (total_slots)
+ retiring = ret_slots / total_slots;
+ return retiring;
+}
+
+static double td_fe_bound(int map_idx, struct runtime_stat *st,
+ struct runtime_stat_data *rsd)
+{
+ double fe_bound = 0;
+ double total_slots = td_total_slots(map_idx, st, rsd);
+ double fetch_bub = runtime_stat_avg(st, STAT_TOPDOWN_FETCH_BUBBLES,
+ map_idx, rsd);
+
+ if (total_slots)
+ fe_bound = fetch_bub / total_slots;
+ return fe_bound;
+}
+
+static double td_be_bound(int map_idx, struct runtime_stat *st,
+ struct runtime_stat_data *rsd)
+{
+ double sum = (td_fe_bound(map_idx, st, rsd) +
+ td_bad_spec(map_idx, st, rsd) +
+ td_retiring(map_idx, 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 map_idx, enum stat_type type,
+ struct runtime_stat *stat,
+ struct runtime_stat_data *rsd)
+{
+ double sum = runtime_stat_avg(stat, STAT_TOPDOWN_RETIRING, map_idx, rsd) +
+ runtime_stat_avg(stat, STAT_TOPDOWN_FE_BOUND, map_idx, rsd) +
+ runtime_stat_avg(stat, STAT_TOPDOWN_BE_BOUND, map_idx, rsd) +
+ runtime_stat_avg(stat, STAT_TOPDOWN_BAD_SPEC, map_idx, rsd);
+ double d = runtime_stat_avg(stat, type, map_idx, 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 map_idx, struct runtime_stat *stat,
+ struct runtime_stat_data *rsd)
+{
+ int c = 0;
+
+ if (runtime_stat_avg(stat, STAT_TOPDOWN_RETIRING, map_idx, rsd) > 0)
+ c++;
+ if (runtime_stat_avg(stat, STAT_TOPDOWN_BE_BOUND, map_idx, rsd) > 0)
+ c++;
+ if (runtime_stat_avg(stat, STAT_TOPDOWN_FE_BOUND, map_idx, rsd) > 0)
+ c++;
+ if (runtime_stat_avg(stat, STAT_TOPDOWN_BAD_SPEC, map_idx, rsd) > 0)
+ c++;
+ return c >= 2;
+}
+
+static void print_smi_cost(struct perf_stat_config *config, int map_idx,
+ 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, map_idx, rsd);
+ aperf = runtime_stat_avg(st, STAT_APERF, map_idx, rsd);
+ cycles = runtime_stat_avg(st, STAT_CYCLES, map_idx, 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 map_idx,
+ struct runtime_stat *st)
+{
+ double scale;
+ char *n;
+ int i, j, ret;
+
+ for (i = 0; metric_events[i]; i++) {
+ struct saved_value *v;
+ struct stats *stats;
+ u64 metric_total = 0;
+ int source_count;
+
+ if (evsel__is_tool(metric_events[i])) {
+ source_count = 1;
+ switch (metric_events[i]->tool_event) {
+ case PERF_TOOL_DURATION_TIME:
+ stats = &walltime_nsecs_stats;
+ scale = 1e-9;
+ break;
+ case PERF_TOOL_USER_TIME:
+ stats = &ru_stats.ru_utime_usec_stat;
+ scale = 1e-6;
+ break;
+ case PERF_TOOL_SYSTEM_TIME:
+ stats = &ru_stats.ru_stime_usec_stat;
+ scale = 1e-6;
+ break;
+ case PERF_TOOL_NONE:
+ pr_err("Invalid tool event 'none'");
+ abort();
+ case PERF_TOOL_MAX:
+ pr_err("Invalid tool event 'max'");
+ abort();
+ default:
+ pr_err("Unknown tool event '%s'", evsel__name(metric_events[i]));
+ abort();
+ }
+ } else {
+ v = saved_value_lookup(metric_events[i], map_idx, false,
+ STAT_NONE, 0, st,
+ metric_events[i]->cgrp);
+ if (!v)
+ break;
+ stats = &v->stats;
+ /*
+ * If an event was scaled during stat gathering, reverse
+ * the scale before computing the metric.
+ */
+ scale = 1.0 / metric_events[i]->scale;
+
+ source_count = evsel__source_count(metric_events[i]);
+
+ if (v->metric_other)
+ metric_total = v->metric_total * scale;
+ }
+ n = strdup(evsel__metric_id(metric_events[i]));
+ if (!n)
+ return -ENOMEM;
+
+ expr__add_id_val_source_count(pctx, n,
+ metric_total ? : avg_stats(stats) * scale,
+ source_count);
+ }
+
+ 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 map_idx,
+ 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;
+
+ if (config->user_requested_cpu_list)
+ pctx->sctx.user_requested_cpu_list = strdup(config->user_requested_cpu_list);
+ pctx->sctx.runtime = runtime;
+ pctx->sctx.system_wide = config->system_wide;
+ i = prepare_metric(metric_events, metric_refs, pctx, map_idx, 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 map_idx, 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, map_idx, 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 map_idx,
+ 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, map_idx, &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, map_idx, &rsd);
+
+ total = max(total, runtime_stat_avg(st,
+ STAT_STALLED_CYCLES_BACK,
+ map_idx, &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, map_idx, &rsd) != 0)
+ print_branch_misses(config, map_idx, 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, map_idx, &rsd) != 0)
+ print_l1_dcache_misses(config, map_idx, 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, map_idx, &rsd) != 0)
+ print_l1_icache_misses(config, map_idx, 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, map_idx, &rsd) != 0)
+ print_dtlb_cache_misses(config, map_idx, 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, map_idx, &rsd) != 0)
+ print_itlb_cache_misses(config, map_idx, 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, map_idx, &rsd) != 0)
+ print_ll_cache_misses(config, map_idx, 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, map_idx, &rsd);
+
+ if (total)
+ ratio = avg * 100 / total;
+
+ if (runtime_stat_n(st, STAT_CACHEREFS, map_idx, &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, map_idx, avg, out, st, &rsd);
+ } else if (evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
+ print_stalled_cycles_backend(config, map_idx, avg, out, st, &rsd);
+ } else if (evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
+ total = runtime_stat_avg(st, STAT_NSECS, map_idx, &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, map_idx, &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, map_idx, &rsd);
+ total2 = runtime_stat_avg(st, STAT_CYCLES_IN_TX, map_idx, &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, map_idx, &rsd);
+
+ if (avg)
+ ratio = total / avg;
+
+ if (runtime_stat_n(st, STAT_CYCLES_IN_TX, map_idx, &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, map_idx, &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(map_idx, 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(map_idx, 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(map_idx, 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(map_idx, 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(map_idx, 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(map_idx, st, &rsd)) {
+ double retiring = td_metric_ratio(map_idx,
+ 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(map_idx, st, &rsd)) {
+ double fe_bound = td_metric_ratio(map_idx,
+ 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(map_idx, st, &rsd)) {
+ double be_bound = td_metric_ratio(map_idx,
+ 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(map_idx, st, &rsd)) {
+ double bad_spec = td_metric_ratio(map_idx,
+ 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(map_idx, st, &rsd) && (config->topdown_level > 1)) {
+ double retiring = td_metric_ratio(map_idx,
+ STAT_TOPDOWN_RETIRING, st,
+ &rsd);
+ double heavy_ops = td_metric_ratio(map_idx,
+ 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(map_idx, st, &rsd) && (config->topdown_level > 1)) {
+ double bad_spec = td_metric_ratio(map_idx,
+ STAT_TOPDOWN_BAD_SPEC, st,
+ &rsd);
+ double br_mis = td_metric_ratio(map_idx,
+ 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(map_idx, st, &rsd) && (config->topdown_level > 1)) {
+ double fe_bound = td_metric_ratio(map_idx,
+ STAT_TOPDOWN_FE_BOUND, st,
+ &rsd);
+ double fetch_lat = td_metric_ratio(map_idx,
+ 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(map_idx, st, &rsd) && (config->topdown_level > 1)) {
+ double be_bound = td_metric_ratio(map_idx,
+ STAT_TOPDOWN_BE_BOUND, st,
+ &rsd);
+ double mem_bound = td_metric_ratio(map_idx,
+ 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,
+ map_idx, out, st);
+ } else if (runtime_stat_n(st, STAT_NSECS, map_idx, &rsd) != 0) {
+ char unit = ' ';
+ char unit_buf[10] = "/sec";
+
+ total = runtime_stat_avg(st, STAT_NSECS, map_idx, &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, map_idx, 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,
+ map_idx, out, st);
+ }
+ }
+ if (num == 0)
+ print_metric(config, ctxp, NULL, NULL, NULL, 0);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-07 04:16:07 +0000