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-rw-r--r--ANDROID_3.4.5/tools/perf/builtin-stat.c1298
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diff --git a/ANDROID_3.4.5/tools/perf/builtin-stat.c b/ANDROID_3.4.5/tools/perf/builtin-stat.c
deleted file mode 100644
index 1e5e9b27..00000000
--- a/ANDROID_3.4.5/tools/perf/builtin-stat.c
+++ /dev/null
@@ -1,1298 +0,0 @@
-/*
- * builtin-stat.c
- *
- * Builtin stat command: Give a precise performance counters summary
- * overview about any workload, CPU or specific PID.
- *
- * Sample output:
-
- $ perf stat ./hackbench 10
-
- Time: 0.118
-
- Performance counter stats for './hackbench 10':
-
- 1708.761321 task-clock # 11.037 CPUs utilized
- 41,190 context-switches # 0.024 M/sec
- 6,735 CPU-migrations # 0.004 M/sec
- 17,318 page-faults # 0.010 M/sec
- 5,205,202,243 cycles # 3.046 GHz
- 3,856,436,920 stalled-cycles-frontend # 74.09% frontend cycles idle
- 1,600,790,871 stalled-cycles-backend # 30.75% backend cycles idle
- 2,603,501,247 instructions # 0.50 insns per cycle
- # 1.48 stalled cycles per insn
- 484,357,498 branches # 283.455 M/sec
- 6,388,934 branch-misses # 1.32% of all branches
-
- 0.154822978 seconds time elapsed
-
- *
- * Copyright (C) 2008-2011, Red Hat Inc, Ingo Molnar <mingo@redhat.com>
- *
- * Improvements and fixes by:
- *
- * Arjan van de Ven <arjan@linux.intel.com>
- * Yanmin Zhang <yanmin.zhang@intel.com>
- * Wu Fengguang <fengguang.wu@intel.com>
- * Mike Galbraith <efault@gmx.de>
- * Paul Mackerras <paulus@samba.org>
- * Jaswinder Singh Rajput <jaswinder@kernel.org>
- *
- * Released under the GPL v2. (and only v2, not any later version)
- */
-
-#include "perf.h"
-#include "builtin.h"
-#include "util/util.h"
-#include "util/parse-options.h"
-#include "util/parse-events.h"
-#include "util/event.h"
-#include "util/evlist.h"
-#include "util/evsel.h"
-#include "util/debug.h"
-#include "util/color.h"
-#include "util/header.h"
-#include "util/cpumap.h"
-#include "util/thread.h"
-#include "util/thread_map.h"
-
-#include <sys/prctl.h>
-#include <math.h>
-#include <locale.h>
-
-#define DEFAULT_SEPARATOR " "
-#define CNTR_NOT_SUPPORTED "<not supported>"
-#define CNTR_NOT_COUNTED "<not counted>"
-
-static struct perf_event_attr default_attrs[] = {
-
- { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_TASK_CLOCK },
- { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CONTEXT_SWITCHES },
- { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_CPU_MIGRATIONS },
- { .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_PAGE_FAULTS },
-
- { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES },
- { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_FRONTEND },
- { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_STALLED_CYCLES_BACKEND },
- { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_INSTRUCTIONS },
- { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
- { .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_BRANCH_MISSES },
-
-};
-
-/*
- * Detailed stats (-d), covering the L1 and last level data caches:
- */
-static struct perf_event_attr detailed_attrs[] = {
-
- { .type = PERF_TYPE_HW_CACHE,
- .config =
- PERF_COUNT_HW_CACHE_L1D << 0 |
- (PERF_COUNT_HW_CACHE_OP_READ << 8) |
- (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
-
- { .type = PERF_TYPE_HW_CACHE,
- .config =
- PERF_COUNT_HW_CACHE_L1D << 0 |
- (PERF_COUNT_HW_CACHE_OP_READ << 8) |
- (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
-
- { .type = PERF_TYPE_HW_CACHE,
- .config =
- PERF_COUNT_HW_CACHE_LL << 0 |
- (PERF_COUNT_HW_CACHE_OP_READ << 8) |
- (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
-
- { .type = PERF_TYPE_HW_CACHE,
- .config =
- PERF_COUNT_HW_CACHE_LL << 0 |
- (PERF_COUNT_HW_CACHE_OP_READ << 8) |
- (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
-};
-
-/*
- * Very detailed stats (-d -d), covering the instruction cache and the TLB caches:
- */
-static struct perf_event_attr very_detailed_attrs[] = {
-
- { .type = PERF_TYPE_HW_CACHE,
- .config =
- PERF_COUNT_HW_CACHE_L1I << 0 |
- (PERF_COUNT_HW_CACHE_OP_READ << 8) |
- (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
-
- { .type = PERF_TYPE_HW_CACHE,
- .config =
- PERF_COUNT_HW_CACHE_L1I << 0 |
- (PERF_COUNT_HW_CACHE_OP_READ << 8) |
- (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
-
- { .type = PERF_TYPE_HW_CACHE,
- .config =
- PERF_COUNT_HW_CACHE_DTLB << 0 |
- (PERF_COUNT_HW_CACHE_OP_READ << 8) |
- (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
-
- { .type = PERF_TYPE_HW_CACHE,
- .config =
- PERF_COUNT_HW_CACHE_DTLB << 0 |
- (PERF_COUNT_HW_CACHE_OP_READ << 8) |
- (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
-
- { .type = PERF_TYPE_HW_CACHE,
- .config =
- PERF_COUNT_HW_CACHE_ITLB << 0 |
- (PERF_COUNT_HW_CACHE_OP_READ << 8) |
- (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
-
- { .type = PERF_TYPE_HW_CACHE,
- .config =
- PERF_COUNT_HW_CACHE_ITLB << 0 |
- (PERF_COUNT_HW_CACHE_OP_READ << 8) |
- (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
-
-};
-
-/*
- * Very, very detailed stats (-d -d -d), adding prefetch events:
- */
-static struct perf_event_attr very_very_detailed_attrs[] = {
-
- { .type = PERF_TYPE_HW_CACHE,
- .config =
- PERF_COUNT_HW_CACHE_L1D << 0 |
- (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
- (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16) },
-
- { .type = PERF_TYPE_HW_CACHE,
- .config =
- PERF_COUNT_HW_CACHE_L1D << 0 |
- (PERF_COUNT_HW_CACHE_OP_PREFETCH << 8) |
- (PERF_COUNT_HW_CACHE_RESULT_MISS << 16) },
-};
-
-
-
-struct perf_evlist *evsel_list;
-
-static bool system_wide = false;
-static int run_idx = 0;
-
-static int run_count = 1;
-static bool no_inherit = false;
-static bool scale = true;
-static bool no_aggr = false;
-static const char *target_pid;
-static const char *target_tid;
-static pid_t child_pid = -1;
-static bool null_run = false;
-static int detailed_run = 0;
-static bool sync_run = false;
-static bool big_num = true;
-static int big_num_opt = -1;
-static const char *cpu_list;
-static const char *csv_sep = NULL;
-static bool csv_output = false;
-static bool group = false;
-static const char *output_name = NULL;
-static FILE *output = NULL;
-static int output_fd;
-
-static volatile int done = 0;
-
-struct stats
-{
- double n, mean, M2;
-};
-
-struct perf_stat {
- struct stats res_stats[3];
-};
-
-static int perf_evsel__alloc_stat_priv(struct perf_evsel *evsel)
-{
- evsel->priv = zalloc(sizeof(struct perf_stat));
- return evsel->priv == NULL ? -ENOMEM : 0;
-}
-
-static void perf_evsel__free_stat_priv(struct perf_evsel *evsel)
-{
- free(evsel->priv);
- evsel->priv = NULL;
-}
-
-static void update_stats(struct stats *stats, u64 val)
-{
- double delta;
-
- stats->n++;
- delta = val - stats->mean;
- stats->mean += delta / stats->n;
- stats->M2 += delta*(val - stats->mean);
-}
-
-static double avg_stats(struct stats *stats)
-{
- return stats->mean;
-}
-
-/*
- * http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance
- *
- * (\Sum n_i^2) - ((\Sum n_i)^2)/n
- * s^2 = -------------------------------
- * n - 1
- *
- * http://en.wikipedia.org/wiki/Stddev
- *
- * The std dev of the mean is related to the std dev by:
- *
- * s
- * s_mean = -------
- * sqrt(n)
- *
- */
-static double stddev_stats(struct stats *stats)
-{
- double variance, variance_mean;
-
- if (!stats->n)
- return 0.0;
-
- variance = stats->M2 / (stats->n - 1);
- variance_mean = variance / stats->n;
-
- return sqrt(variance_mean);
-}
-
-struct stats runtime_nsecs_stats[MAX_NR_CPUS];
-struct stats runtime_cycles_stats[MAX_NR_CPUS];
-struct stats runtime_stalled_cycles_front_stats[MAX_NR_CPUS];
-struct stats runtime_stalled_cycles_back_stats[MAX_NR_CPUS];
-struct stats runtime_branches_stats[MAX_NR_CPUS];
-struct stats runtime_cacherefs_stats[MAX_NR_CPUS];
-struct stats runtime_l1_dcache_stats[MAX_NR_CPUS];
-struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
-struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
-struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
-struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
-struct stats walltime_nsecs_stats;
-
-static int create_perf_stat_counter(struct perf_evsel *evsel,
- struct perf_evsel *first)
-{
- struct perf_event_attr *attr = &evsel->attr;
- struct xyarray *group_fd = NULL;
- bool exclude_guest_missing = false;
- int ret;
-
- if (group && evsel != first)
- group_fd = first->fd;
-
- if (scale)
- attr->read_format = PERF_FORMAT_TOTAL_TIME_ENABLED |
- PERF_FORMAT_TOTAL_TIME_RUNNING;
-
- attr->inherit = !no_inherit;
-
-retry:
- if (exclude_guest_missing)
- evsel->attr.exclude_guest = evsel->attr.exclude_host = 0;
-
- if (system_wide) {
- ret = perf_evsel__open_per_cpu(evsel, evsel_list->cpus,
- group, group_fd);
- if (ret)
- goto check_ret;
- return 0;
- }
-
- if (!target_pid && !target_tid && (!group || evsel == first)) {
- attr->disabled = 1;
- attr->enable_on_exec = 1;
- }
-
- ret = perf_evsel__open_per_thread(evsel, evsel_list->threads,
- group, group_fd);
- if (!ret)
- return 0;
- /* fall through */
-check_ret:
- if (ret && errno == EINVAL) {
- if (!exclude_guest_missing &&
- (evsel->attr.exclude_guest || evsel->attr.exclude_host)) {
- pr_debug("Old kernel, cannot exclude "
- "guest or host samples.\n");
- exclude_guest_missing = true;
- goto retry;
- }
- }
- return ret;
-}
-
-/*
- * Does the counter have nsecs as a unit?
- */
-static inline int nsec_counter(struct perf_evsel *evsel)
-{
- if (perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK) ||
- perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
- return 1;
-
- return 0;
-}
-
-/*
- * Update various tracking values we maintain to print
- * more semantic information such as miss/hit ratios,
- * instruction rates, etc:
- */
-static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
-{
- if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
- update_stats(&runtime_nsecs_stats[0], count[0]);
- else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
- update_stats(&runtime_cycles_stats[0], count[0]);
- else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_FRONTEND))
- update_stats(&runtime_stalled_cycles_front_stats[0], count[0]);
- else if (perf_evsel__match(counter, HARDWARE, HW_STALLED_CYCLES_BACKEND))
- update_stats(&runtime_stalled_cycles_back_stats[0], count[0]);
- else if (perf_evsel__match(counter, HARDWARE, HW_BRANCH_INSTRUCTIONS))
- update_stats(&runtime_branches_stats[0], count[0]);
- else if (perf_evsel__match(counter, HARDWARE, HW_CACHE_REFERENCES))
- update_stats(&runtime_cacherefs_stats[0], count[0]);
- else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1D))
- update_stats(&runtime_l1_dcache_stats[0], count[0]);
- else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_L1I))
- update_stats(&runtime_l1_icache_stats[0], count[0]);
- else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_LL))
- update_stats(&runtime_ll_cache_stats[0], count[0]);
- else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_DTLB))
- update_stats(&runtime_dtlb_cache_stats[0], count[0]);
- else if (perf_evsel__match(counter, HW_CACHE, HW_CACHE_ITLB))
- update_stats(&runtime_itlb_cache_stats[0], count[0]);
-}
-
-/*
- * Read out the results of a single counter:
- * aggregate counts across CPUs in system-wide mode
- */
-static int read_counter_aggr(struct perf_evsel *counter)
-{
- struct perf_stat *ps = counter->priv;
- u64 *count = counter->counts->aggr.values;
- int i;
-
- if (__perf_evsel__read(counter, evsel_list->cpus->nr,
- evsel_list->threads->nr, scale) < 0)
- return -1;
-
- for (i = 0; i < 3; i++)
- update_stats(&ps->res_stats[i], count[i]);
-
- if (verbose) {
- fprintf(output, "%s: %" PRIu64 " %" PRIu64 " %" PRIu64 "\n",
- event_name(counter), count[0], count[1], count[2]);
- }
-
- /*
- * Save the full runtime - to allow normalization during printout:
- */
- update_shadow_stats(counter, count);
-
- return 0;
-}
-
-/*
- * Read out the results of a single counter:
- * do not aggregate counts across CPUs in system-wide mode
- */
-static int read_counter(struct perf_evsel *counter)
-{
- u64 *count;
- int cpu;
-
- for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
- if (__perf_evsel__read_on_cpu(counter, cpu, 0, scale) < 0)
- return -1;
-
- count = counter->counts->cpu[cpu].values;
-
- update_shadow_stats(counter, count);
- }
-
- return 0;
-}
-
-static int run_perf_stat(int argc __used, const char **argv)
-{
- unsigned long long t0, t1;
- struct perf_evsel *counter, *first;
- int status = 0;
- int child_ready_pipe[2], go_pipe[2];
- const bool forks = (argc > 0);
- char buf;
-
- if (forks && (pipe(child_ready_pipe) < 0 || pipe(go_pipe) < 0)) {
- perror("failed to create pipes");
- exit(1);
- }
-
- if (forks) {
- if ((child_pid = fork()) < 0)
- perror("failed to fork");
-
- if (!child_pid) {
- close(child_ready_pipe[0]);
- close(go_pipe[1]);
- fcntl(go_pipe[0], F_SETFD, FD_CLOEXEC);
-
- /*
- * Do a dummy execvp to get the PLT entry resolved,
- * so we avoid the resolver overhead on the real
- * execvp call.
- */
- execvp("", (char **)argv);
-
- /*
- * Tell the parent we're ready to go
- */
- close(child_ready_pipe[1]);
-
- /*
- * Wait until the parent tells us to go.
- */
- if (read(go_pipe[0], &buf, 1) == -1)
- perror("unable to read pipe");
-
- execvp(argv[0], (char **)argv);
-
- perror(argv[0]);
- exit(-1);
- }
-
- if (!target_tid && !target_pid && !system_wide)
- evsel_list->threads->map[0] = child_pid;
-
- /*
- * Wait for the child to be ready to exec.
- */
- close(child_ready_pipe[1]);
- close(go_pipe[0]);
- if (read(child_ready_pipe[0], &buf, 1) == -1)
- perror("unable to read pipe");
- close(child_ready_pipe[0]);
- }
-
- first = list_entry(evsel_list->entries.next, struct perf_evsel, node);
-
- list_for_each_entry(counter, &evsel_list->entries, node) {
- if (create_perf_stat_counter(counter, first) < 0) {
- /*
- * PPC returns ENXIO for HW counters until 2.6.37
- * (behavior changed with commit b0a873e).
- */
- if (errno == EINVAL || errno == ENOSYS ||
- errno == ENOENT || errno == EOPNOTSUPP ||
- errno == ENXIO) {
- if (verbose)
- ui__warning("%s event is not supported by the kernel.\n",
- event_name(counter));
- counter->supported = false;
- continue;
- }
-
- if (errno == EPERM || errno == EACCES) {
- error("You may not have permission to collect %sstats.\n"
- "\t Consider tweaking"
- " /proc/sys/kernel/perf_event_paranoid or running as root.",
- system_wide ? "system-wide " : "");
- } else {
- error("open_counter returned with %d (%s). "
- "/bin/dmesg may provide additional information.\n",
- errno, strerror(errno));
- }
- if (child_pid != -1)
- kill(child_pid, SIGTERM);
- die("Not all events could be opened.\n");
- return -1;
- }
- counter->supported = true;
- }
-
- if (perf_evlist__set_filters(evsel_list)) {
- error("failed to set filter with %d (%s)\n", errno,
- strerror(errno));
- return -1;
- }
-
- /*
- * Enable counters and exec the command:
- */
- t0 = rdclock();
-
- if (forks) {
- close(go_pipe[1]);
- wait(&status);
- if (WIFSIGNALED(status))
- psignal(WTERMSIG(status), argv[0]);
- } else {
- while(!done) sleep(1);
- }
-
- t1 = rdclock();
-
- update_stats(&walltime_nsecs_stats, t1 - t0);
-
- if (no_aggr) {
- list_for_each_entry(counter, &evsel_list->entries, node) {
- read_counter(counter);
- perf_evsel__close_fd(counter, evsel_list->cpus->nr, 1);
- }
- } else {
- list_for_each_entry(counter, &evsel_list->entries, node) {
- read_counter_aggr(counter);
- perf_evsel__close_fd(counter, evsel_list->cpus->nr,
- evsel_list->threads->nr);
- }
- }
-
- return WEXITSTATUS(status);
-}
-
-static void print_noise_pct(double total, double avg)
-{
- double pct = 0.0;
-
- if (avg)
- pct = 100.0*total/avg;
-
- if (csv_output)
- fprintf(output, "%s%.2f%%", csv_sep, pct);
- else if (pct)
- fprintf(output, " ( +-%6.2f%% )", pct);
-}
-
-static void print_noise(struct perf_evsel *evsel, double avg)
-{
- struct perf_stat *ps;
-
- if (run_count == 1)
- return;
-
- ps = evsel->priv;
- print_noise_pct(stddev_stats(&ps->res_stats[0]), avg);
-}
-
-static void nsec_printout(int cpu, struct perf_evsel *evsel, double avg)
-{
- double msecs = avg / 1e6;
- char cpustr[16] = { '\0', };
- const char *fmt = csv_output ? "%s%.6f%s%s" : "%s%18.6f%s%-25s";
-
- if (no_aggr)
- sprintf(cpustr, "CPU%*d%s",
- csv_output ? 0 : -4,
- evsel_list->cpus->map[cpu], csv_sep);
-
- fprintf(output, fmt, cpustr, msecs, csv_sep, event_name(evsel));
-
- if (evsel->cgrp)
- fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
-
- if (csv_output)
- return;
-
- if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK))
- fprintf(output, " # %8.3f CPUs utilized ",
- avg / avg_stats(&walltime_nsecs_stats));
- else
- fprintf(output, " ");
-}
-
-/* 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 void print_stalled_cycles_frontend(int cpu, struct perf_evsel *evsel __used, double avg)
-{
- double total, ratio = 0.0;
- const char *color;
-
- total = avg_stats(&runtime_cycles_stats[cpu]);
-
- if (total)
- ratio = avg / total * 100.0;
-
- color = get_ratio_color(GRC_STALLED_CYCLES_FE, ratio);
-
- fprintf(output, " # ");
- color_fprintf(output, color, "%6.2f%%", ratio);
- fprintf(output, " frontend cycles idle ");
-}
-
-static void print_stalled_cycles_backend(int cpu, struct perf_evsel *evsel __used, double avg)
-{
- double total, ratio = 0.0;
- const char *color;
-
- total = avg_stats(&runtime_cycles_stats[cpu]);
-
- if (total)
- ratio = avg / total * 100.0;
-
- color = get_ratio_color(GRC_STALLED_CYCLES_BE, ratio);
-
- fprintf(output, " # ");
- color_fprintf(output, color, "%6.2f%%", ratio);
- fprintf(output, " backend cycles idle ");
-}
-
-static void print_branch_misses(int cpu, struct perf_evsel *evsel __used, double avg)
-{
- double total, ratio = 0.0;
- const char *color;
-
- total = avg_stats(&runtime_branches_stats[cpu]);
-
- if (total)
- ratio = avg / total * 100.0;
-
- color = get_ratio_color(GRC_CACHE_MISSES, ratio);
-
- fprintf(output, " # ");
- color_fprintf(output, color, "%6.2f%%", ratio);
- fprintf(output, " of all branches ");
-}
-
-static void print_l1_dcache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
-{
- double total, ratio = 0.0;
- const char *color;
-
- total = avg_stats(&runtime_l1_dcache_stats[cpu]);
-
- if (total)
- ratio = avg / total * 100.0;
-
- color = get_ratio_color(GRC_CACHE_MISSES, ratio);
-
- fprintf(output, " # ");
- color_fprintf(output, color, "%6.2f%%", ratio);
- fprintf(output, " of all L1-dcache hits ");
-}
-
-static void print_l1_icache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
-{
- double total, ratio = 0.0;
- const char *color;
-
- total = avg_stats(&runtime_l1_icache_stats[cpu]);
-
- if (total)
- ratio = avg / total * 100.0;
-
- color = get_ratio_color(GRC_CACHE_MISSES, ratio);
-
- fprintf(output, " # ");
- color_fprintf(output, color, "%6.2f%%", ratio);
- fprintf(output, " of all L1-icache hits ");
-}
-
-static void print_dtlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
-{
- double total, ratio = 0.0;
- const char *color;
-
- total = avg_stats(&runtime_dtlb_cache_stats[cpu]);
-
- if (total)
- ratio = avg / total * 100.0;
-
- color = get_ratio_color(GRC_CACHE_MISSES, ratio);
-
- fprintf(output, " # ");
- color_fprintf(output, color, "%6.2f%%", ratio);
- fprintf(output, " of all dTLB cache hits ");
-}
-
-static void print_itlb_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
-{
- double total, ratio = 0.0;
- const char *color;
-
- total = avg_stats(&runtime_itlb_cache_stats[cpu]);
-
- if (total)
- ratio = avg / total * 100.0;
-
- color = get_ratio_color(GRC_CACHE_MISSES, ratio);
-
- fprintf(output, " # ");
- color_fprintf(output, color, "%6.2f%%", ratio);
- fprintf(output, " of all iTLB cache hits ");
-}
-
-static void print_ll_cache_misses(int cpu, struct perf_evsel *evsel __used, double avg)
-{
- double total, ratio = 0.0;
- const char *color;
-
- total = avg_stats(&runtime_ll_cache_stats[cpu]);
-
- if (total)
- ratio = avg / total * 100.0;
-
- color = get_ratio_color(GRC_CACHE_MISSES, ratio);
-
- fprintf(output, " # ");
- color_fprintf(output, color, "%6.2f%%", ratio);
- fprintf(output, " of all LL-cache hits ");
-}
-
-static void abs_printout(int cpu, struct perf_evsel *evsel, double avg)
-{
- double total, ratio = 0.0;
- char cpustr[16] = { '\0', };
- const char *fmt;
-
- if (csv_output)
- fmt = "%s%.0f%s%s";
- else if (big_num)
- fmt = "%s%'18.0f%s%-25s";
- else
- fmt = "%s%18.0f%s%-25s";
-
- if (no_aggr)
- sprintf(cpustr, "CPU%*d%s",
- csv_output ? 0 : -4,
- evsel_list->cpus->map[cpu], csv_sep);
- else
- cpu = 0;
-
- fprintf(output, fmt, cpustr, avg, csv_sep, event_name(evsel));
-
- if (evsel->cgrp)
- fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
-
- if (csv_output)
- return;
-
- if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
- total = avg_stats(&runtime_cycles_stats[cpu]);
-
- if (total)
- ratio = avg / total;
-
- fprintf(output, " # %5.2f insns per cycle ", ratio);
-
- total = avg_stats(&runtime_stalled_cycles_front_stats[cpu]);
- total = max(total, avg_stats(&runtime_stalled_cycles_back_stats[cpu]));
-
- if (total && avg) {
- ratio = total / avg;
- fprintf(output, "\n # %5.2f stalled cycles per insn", ratio);
- }
-
- } else if (perf_evsel__match(evsel, HARDWARE, HW_BRANCH_MISSES) &&
- runtime_branches_stats[cpu].n != 0) {
- print_branch_misses(cpu, evsel, avg);
- } else if (
- evsel->attr.type == PERF_TYPE_HW_CACHE &&
- evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1D |
- ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
- ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
- runtime_l1_dcache_stats[cpu].n != 0) {
- print_l1_dcache_misses(cpu, evsel, avg);
- } else if (
- evsel->attr.type == PERF_TYPE_HW_CACHE &&
- evsel->attr.config == ( PERF_COUNT_HW_CACHE_L1I |
- ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
- ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
- runtime_l1_icache_stats[cpu].n != 0) {
- print_l1_icache_misses(cpu, evsel, avg);
- } else if (
- evsel->attr.type == PERF_TYPE_HW_CACHE &&
- evsel->attr.config == ( PERF_COUNT_HW_CACHE_DTLB |
- ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
- ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
- runtime_dtlb_cache_stats[cpu].n != 0) {
- print_dtlb_cache_misses(cpu, evsel, avg);
- } else if (
- evsel->attr.type == PERF_TYPE_HW_CACHE &&
- evsel->attr.config == ( PERF_COUNT_HW_CACHE_ITLB |
- ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
- ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
- runtime_itlb_cache_stats[cpu].n != 0) {
- print_itlb_cache_misses(cpu, evsel, avg);
- } else if (
- evsel->attr.type == PERF_TYPE_HW_CACHE &&
- evsel->attr.config == ( PERF_COUNT_HW_CACHE_LL |
- ((PERF_COUNT_HW_CACHE_OP_READ) << 8) |
- ((PERF_COUNT_HW_CACHE_RESULT_MISS) << 16)) &&
- runtime_ll_cache_stats[cpu].n != 0) {
- print_ll_cache_misses(cpu, evsel, avg);
- } else if (perf_evsel__match(evsel, HARDWARE, HW_CACHE_MISSES) &&
- runtime_cacherefs_stats[cpu].n != 0) {
- total = avg_stats(&runtime_cacherefs_stats[cpu]);
-
- if (total)
- ratio = avg * 100 / total;
-
- fprintf(output, " # %8.3f %% of all cache refs ", ratio);
-
- } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_FRONTEND)) {
- print_stalled_cycles_frontend(cpu, evsel, avg);
- } else if (perf_evsel__match(evsel, HARDWARE, HW_STALLED_CYCLES_BACKEND)) {
- print_stalled_cycles_backend(cpu, evsel, avg);
- } else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
- total = avg_stats(&runtime_nsecs_stats[cpu]);
-
- if (total)
- ratio = 1.0 * avg / total;
-
- fprintf(output, " # %8.3f GHz ", ratio);
- } else if (runtime_nsecs_stats[cpu].n != 0) {
- char unit = 'M';
-
- total = avg_stats(&runtime_nsecs_stats[cpu]);
-
- if (total)
- ratio = 1000.0 * avg / total;
- if (ratio < 0.001) {
- ratio *= 1000;
- unit = 'K';
- }
-
- fprintf(output, " # %8.3f %c/sec ", ratio, unit);
- } else {
- fprintf(output, " ");
- }
-}
-
-/*
- * Print out the results of a single counter:
- * aggregated counts in system-wide mode
- */
-static void print_counter_aggr(struct perf_evsel *counter)
-{
- struct perf_stat *ps = counter->priv;
- double avg = avg_stats(&ps->res_stats[0]);
- int scaled = counter->counts->scaled;
-
- if (scaled == -1) {
- fprintf(output, "%*s%s%*s",
- csv_output ? 0 : 18,
- counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
- csv_sep,
- csv_output ? 0 : -24,
- event_name(counter));
-
- if (counter->cgrp)
- fprintf(output, "%s%s", csv_sep, counter->cgrp->name);
-
- fputc('\n', output);
- return;
- }
-
- if (nsec_counter(counter))
- nsec_printout(-1, counter, avg);
- else
- abs_printout(-1, counter, avg);
-
- print_noise(counter, avg);
-
- if (csv_output) {
- fputc('\n', output);
- return;
- }
-
- if (scaled) {
- double avg_enabled, avg_running;
-
- avg_enabled = avg_stats(&ps->res_stats[1]);
- avg_running = avg_stats(&ps->res_stats[2]);
-
- fprintf(output, " [%5.2f%%]", 100 * avg_running / avg_enabled);
- }
- fprintf(output, "\n");
-}
-
-/*
- * Print out the results of a single counter:
- * does not use aggregated count in system-wide
- */
-static void print_counter(struct perf_evsel *counter)
-{
- u64 ena, run, val;
- int cpu;
-
- for (cpu = 0; cpu < evsel_list->cpus->nr; cpu++) {
- val = counter->counts->cpu[cpu].val;
- ena = counter->counts->cpu[cpu].ena;
- run = counter->counts->cpu[cpu].run;
- if (run == 0 || ena == 0) {
- fprintf(output, "CPU%*d%s%*s%s%*s",
- csv_output ? 0 : -4,
- evsel_list->cpus->map[cpu], csv_sep,
- csv_output ? 0 : 18,
- counter->supported ? CNTR_NOT_COUNTED : CNTR_NOT_SUPPORTED,
- csv_sep,
- csv_output ? 0 : -24,
- event_name(counter));
-
- if (counter->cgrp)
- fprintf(output, "%s%s",
- csv_sep, counter->cgrp->name);
-
- fputc('\n', output);
- continue;
- }
-
- if (nsec_counter(counter))
- nsec_printout(cpu, counter, val);
- else
- abs_printout(cpu, counter, val);
-
- if (!csv_output) {
- print_noise(counter, 1.0);
-
- if (run != ena)
- fprintf(output, " (%.2f%%)",
- 100.0 * run / ena);
- }
- fputc('\n', output);
- }
-}
-
-static void print_stat(int argc, const char **argv)
-{
- struct perf_evsel *counter;
- int i;
-
- fflush(stdout);
-
- if (!csv_output) {
- fprintf(output, "\n");
- fprintf(output, " Performance counter stats for ");
- if (!target_pid && !target_tid) {
- fprintf(output, "\'%s", argv[0]);
- for (i = 1; i < argc; i++)
- fprintf(output, " %s", argv[i]);
- } else if (target_pid)
- fprintf(output, "process id \'%s", target_pid);
- else
- fprintf(output, "thread id \'%s", target_tid);
-
- fprintf(output, "\'");
- if (run_count > 1)
- fprintf(output, " (%d runs)", run_count);
- fprintf(output, ":\n\n");
- }
-
- if (no_aggr) {
- list_for_each_entry(counter, &evsel_list->entries, node)
- print_counter(counter);
- } else {
- list_for_each_entry(counter, &evsel_list->entries, node)
- print_counter_aggr(counter);
- }
-
- if (!csv_output) {
- if (!null_run)
- fprintf(output, "\n");
- fprintf(output, " %17.9f seconds time elapsed",
- avg_stats(&walltime_nsecs_stats)/1e9);
- if (run_count > 1) {
- fprintf(output, " ");
- print_noise_pct(stddev_stats(&walltime_nsecs_stats),
- avg_stats(&walltime_nsecs_stats));
- }
- fprintf(output, "\n\n");
- }
-}
-
-static volatile int signr = -1;
-
-static void skip_signal(int signo)
-{
- if(child_pid == -1)
- done = 1;
-
- signr = signo;
-}
-
-static void sig_atexit(void)
-{
- if (child_pid != -1)
- kill(child_pid, SIGTERM);
-
- if (signr == -1)
- return;
-
- signal(signr, SIG_DFL);
- kill(getpid(), signr);
-}
-
-static const char * const stat_usage[] = {
- "perf stat [<options>] [<command>]",
- NULL
-};
-
-static int stat__set_big_num(const struct option *opt __used,
- const char *s __used, int unset)
-{
- big_num_opt = unset ? 0 : 1;
- return 0;
-}
-
-static bool append_file;
-
-static const struct option options[] = {
- OPT_CALLBACK('e', "event", &evsel_list, "event",
- "event selector. use 'perf list' to list available events",
- parse_events_option),
- OPT_CALLBACK(0, "filter", &evsel_list, "filter",
- "event filter", parse_filter),
- OPT_BOOLEAN('i', "no-inherit", &no_inherit,
- "child tasks do not inherit counters"),
- OPT_STRING('p', "pid", &target_pid, "pid",
- "stat events on existing process id"),
- OPT_STRING('t', "tid", &target_tid, "tid",
- "stat events on existing thread id"),
- OPT_BOOLEAN('a', "all-cpus", &system_wide,
- "system-wide collection from all CPUs"),
- OPT_BOOLEAN('g', "group", &group,
- "put the counters into a counter group"),
- OPT_BOOLEAN('c', "scale", &scale,
- "scale/normalize counters"),
- OPT_INCR('v', "verbose", &verbose,
- "be more verbose (show counter open errors, etc)"),
- OPT_INTEGER('r', "repeat", &run_count,
- "repeat command and print average + stddev (max: 100)"),
- OPT_BOOLEAN('n', "null", &null_run,
- "null run - dont start any counters"),
- OPT_INCR('d', "detailed", &detailed_run,
- "detailed run - start a lot of events"),
- OPT_BOOLEAN('S', "sync", &sync_run,
- "call sync() before starting a run"),
- OPT_CALLBACK_NOOPT('B', "big-num", NULL, NULL,
- "print large numbers with thousands\' separators",
- stat__set_big_num),
- OPT_STRING('C', "cpu", &cpu_list, "cpu",
- "list of cpus to monitor in system-wide"),
- OPT_BOOLEAN('A', "no-aggr", &no_aggr,
- "disable CPU count aggregation"),
- OPT_STRING('x', "field-separator", &csv_sep, "separator",
- "print counts with custom separator"),
- OPT_CALLBACK('G', "cgroup", &evsel_list, "name",
- "monitor event in cgroup name only",
- parse_cgroups),
- OPT_STRING('o', "output", &output_name, "file",
- "output file name"),
- OPT_BOOLEAN(0, "append", &append_file, "append to the output file"),
- OPT_INTEGER(0, "log-fd", &output_fd,
- "log output to fd, instead of stderr"),
- OPT_END()
-};
-
-/*
- * Add default attributes, if there were no attributes specified or
- * if -d/--detailed, -d -d or -d -d -d is used:
- */
-static int add_default_attributes(void)
-{
- /* Set attrs if no event is selected and !null_run: */
- if (null_run)
- return 0;
-
- if (!evsel_list->nr_entries) {
- if (perf_evlist__add_attrs_array(evsel_list, default_attrs) < 0)
- return -1;
- }
-
- /* Detailed events get appended to the event list: */
-
- if (detailed_run < 1)
- return 0;
-
- /* Append detailed run extra attributes: */
- if (perf_evlist__add_attrs_array(evsel_list, detailed_attrs) < 0)
- return -1;
-
- if (detailed_run < 2)
- return 0;
-
- /* Append very detailed run extra attributes: */
- if (perf_evlist__add_attrs_array(evsel_list, very_detailed_attrs) < 0)
- return -1;
-
- if (detailed_run < 3)
- return 0;
-
- /* Append very, very detailed run extra attributes: */
- return perf_evlist__add_attrs_array(evsel_list, very_very_detailed_attrs);
-}
-
-int cmd_stat(int argc, const char **argv, const char *prefix __used)
-{
- struct perf_evsel *pos;
- int status = -ENOMEM;
- const char *mode;
-
- setlocale(LC_ALL, "");
-
- evsel_list = perf_evlist__new(NULL, NULL);
- if (evsel_list == NULL)
- return -ENOMEM;
-
- argc = parse_options(argc, argv, options, stat_usage,
- PARSE_OPT_STOP_AT_NON_OPTION);
-
- output = stderr;
- if (output_name && strcmp(output_name, "-"))
- output = NULL;
-
- if (output_name && output_fd) {
- fprintf(stderr, "cannot use both --output and --log-fd\n");
- usage_with_options(stat_usage, options);
- }
- if (!output) {
- struct timespec tm;
- mode = append_file ? "a" : "w";
-
- output = fopen(output_name, mode);
- if (!output) {
- perror("failed to create output file");
- exit(-1);
- }
- clock_gettime(CLOCK_REALTIME, &tm);
- fprintf(output, "# started on %s\n", ctime(&tm.tv_sec));
- } else if (output_fd != 2) {
- mode = append_file ? "a" : "w";
- output = fdopen(output_fd, mode);
- if (!output) {
- perror("Failed opening logfd");
- return -errno;
- }
- }
-
- if (csv_sep) {
- csv_output = true;
- if (!strcmp(csv_sep, "\\t"))
- csv_sep = "\t";
- } else
- csv_sep = DEFAULT_SEPARATOR;
-
- /*
- * let the spreadsheet do the pretty-printing
- */
- if (csv_output) {
- /* User explicitly passed -B? */
- if (big_num_opt == 1) {
- fprintf(stderr, "-B option not supported with -x\n");
- usage_with_options(stat_usage, options);
- } else /* Nope, so disable big number formatting */
- big_num = false;
- } else if (big_num_opt == 0) /* User passed --no-big-num */
- big_num = false;
-
- if (!argc && !target_pid && !target_tid)
- usage_with_options(stat_usage, options);
- if (run_count <= 0)
- usage_with_options(stat_usage, options);
-
- /* no_aggr, cgroup are for system-wide only */
- if ((no_aggr || nr_cgroups) && !system_wide) {
- fprintf(stderr, "both cgroup and no-aggregation "
- "modes only available in system-wide mode\n");
-
- usage_with_options(stat_usage, options);
- }
-
- if (add_default_attributes())
- goto out;
-
- if (target_pid)
- target_tid = target_pid;
-
- evsel_list->threads = thread_map__new_str(target_pid,
- target_tid, UINT_MAX);
- if (evsel_list->threads == NULL) {
- pr_err("Problems finding threads of monitor\n");
- usage_with_options(stat_usage, options);
- }
-
- if (system_wide)
- evsel_list->cpus = cpu_map__new(cpu_list);
- else
- evsel_list->cpus = cpu_map__dummy_new();
-
- if (evsel_list->cpus == NULL) {
- perror("failed to parse CPUs map");
- usage_with_options(stat_usage, options);
- return -1;
- }
-
- list_for_each_entry(pos, &evsel_list->entries, node) {
- if (perf_evsel__alloc_stat_priv(pos) < 0 ||
- perf_evsel__alloc_counts(pos, evsel_list->cpus->nr) < 0)
- goto out_free_fd;
- }
-
- /*
- * We dont want to block the signals - that would cause
- * child tasks to inherit that and Ctrl-C would not work.
- * What we want is for Ctrl-C to work in the exec()-ed
- * task, but being ignored by perf stat itself:
- */
- atexit(sig_atexit);
- signal(SIGINT, skip_signal);
- signal(SIGALRM, skip_signal);
- signal(SIGABRT, skip_signal);
-
- status = 0;
- for (run_idx = 0; run_idx < run_count; run_idx++) {
- if (run_count != 1 && verbose)
- fprintf(output, "[ perf stat: executing run #%d ... ]\n",
- run_idx + 1);
-
- if (sync_run)
- sync();
-
- status = run_perf_stat(argc, argv);
- }
-
- if (status != -1)
- print_stat(argc, argv);
-out_free_fd:
- list_for_each_entry(pos, &evsel_list->entries, node)
- perf_evsel__free_stat_priv(pos);
- perf_evlist__delete_maps(evsel_list);
-out:
- perf_evlist__delete(evsel_list);
- return status;
-}
generated by cgit (git 2.34.1) at 2024-12-22 05:20:25 +0000