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-rw-r--r--tools/perf/builtin-stat.c225
1 files changed, 193 insertions, 32 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index f686d5ff594..ee0d565f83e 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -46,6 +46,7 @@
#include "util/util.h"
#include "util/parse-options.h"
#include "util/parse-events.h"
+#include "util/pmu.h"
#include "util/event.h"
#include "util/evlist.h"
#include "util/evsel.h"
@@ -70,9 +71,44 @@ static void print_counter_aggr(struct perf_evsel *counter, char *prefix);
static void print_counter(struct perf_evsel *counter, char *prefix);
static void print_aggr(char *prefix);
+/* Default events used for perf stat -T */
+static const char * const transaction_attrs[] = {
+ "task-clock",
+ "{"
+ "instructions,"
+ "cycles,"
+ "cpu/cycles-t/,"
+ "cpu/tx-start/,"
+ "cpu/el-start/,"
+ "cpu/cycles-ct/"
+ "}"
+};
+
+/* More limited version when the CPU does not have all events. */
+static const char * const transaction_limited_attrs[] = {
+ "task-clock",
+ "{"
+ "instructions,"
+ "cycles,"
+ "cpu/cycles-t/,"
+ "cpu/tx-start/"
+ "}"
+};
+
+/* must match transaction_attrs and the beginning limited_attrs */
+enum {
+ T_TASK_CLOCK,
+ T_INSTRUCTIONS,
+ T_CYCLES,
+ T_CYCLES_IN_TX,
+ T_TRANSACTION_START,
+ T_ELISION_START,
+ T_CYCLES_IN_TX_CP,
+};
+
static struct perf_evlist *evsel_list;
-static struct perf_target target = {
+static struct target target = {
.uid = UINT_MAX,
};
@@ -90,6 +126,7 @@ static enum aggr_mode aggr_mode = AGGR_GLOBAL;
static volatile pid_t child_pid = -1;
static bool null_run = false;
static int detailed_run = 0;
+static bool transaction_run;
static bool big_num = true;
static int big_num_opt = -1;
static const char *csv_sep = NULL;
@@ -214,7 +251,10 @@ static struct stats runtime_l1_icache_stats[MAX_NR_CPUS];
static struct stats runtime_ll_cache_stats[MAX_NR_CPUS];
static struct stats runtime_itlb_cache_stats[MAX_NR_CPUS];
static struct stats runtime_dtlb_cache_stats[MAX_NR_CPUS];
+static struct stats runtime_cycles_in_tx_stats[MAX_NR_CPUS];
static struct stats walltime_nsecs_stats;
+static struct stats runtime_transaction_stats[MAX_NR_CPUS];
+static struct stats runtime_elision_stats[MAX_NR_CPUS];
static void perf_stat__reset_stats(struct perf_evlist *evlist)
{
@@ -236,6 +276,11 @@ static void perf_stat__reset_stats(struct perf_evlist *evlist)
memset(runtime_ll_cache_stats, 0, sizeof(runtime_ll_cache_stats));
memset(runtime_itlb_cache_stats, 0, sizeof(runtime_itlb_cache_stats));
memset(runtime_dtlb_cache_stats, 0, sizeof(runtime_dtlb_cache_stats));
+ memset(runtime_cycles_in_tx_stats, 0,
+ sizeof(runtime_cycles_in_tx_stats));
+ memset(runtime_transaction_stats, 0,
+ sizeof(runtime_transaction_stats));
+ memset(runtime_elision_stats, 0, sizeof(runtime_elision_stats));
memset(&walltime_nsecs_stats, 0, sizeof(walltime_nsecs_stats));
}
@@ -249,11 +294,10 @@ static int create_perf_stat_counter(struct perf_evsel *evsel)
attr->inherit = !no_inherit;
- if (perf_target__has_cpu(&target))
+ if (target__has_cpu(&target))
return perf_evsel__open_per_cpu(evsel, perf_evsel__cpus(evsel));
- if (!perf_target__has_task(&target) &&
- perf_evsel__is_group_leader(evsel)) {
+ if (!target__has_task(&target) && perf_evsel__is_group_leader(evsel)) {
attr->disabled = 1;
if (!initial_delay)
attr->enable_on_exec = 1;
@@ -274,6 +318,29 @@ static inline int nsec_counter(struct perf_evsel *evsel)
return 0;
}
+static struct perf_evsel *nth_evsel(int n)
+{
+ static struct perf_evsel **array;
+ static int array_len;
+ struct perf_evsel *ev;
+ int j;
+
+ /* Assumes this only called when evsel_list does not change anymore. */
+ if (!array) {
+ list_for_each_entry(ev, &evsel_list->entries, node)
+ array_len++;
+ array = malloc(array_len * sizeof(void *));
+ if (!array)
+ exit(ENOMEM);
+ j = 0;
+ list_for_each_entry(ev, &evsel_list->entries, node)
+ array[j++] = ev;
+ }
+ if (n < array_len)
+ return array[n];
+ return NULL;
+}
+
/*
* Update various tracking values we maintain to print
* more semantic information such as miss/hit ratios,
@@ -285,6 +352,15 @@ static void update_shadow_stats(struct perf_evsel *counter, u64 *count)
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 (transaction_run &&
+ perf_evsel__cmp(counter, nth_evsel(T_CYCLES_IN_TX)))
+ update_stats(&runtime_cycles_in_tx_stats[0], count[0]);
+ else if (transaction_run &&
+ perf_evsel__cmp(counter, nth_evsel(T_TRANSACTION_START)))
+ update_stats(&runtime_transaction_stats[0], count[0]);
+ else if (transaction_run &&
+ perf_evsel__cmp(counter, nth_evsel(T_ELISION_START)))
+ update_stats(&runtime_elision_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))
@@ -457,6 +533,7 @@ static int __run_perf_stat(int argc, const char **argv)
perror("failed to prepare workload");
return -1;
}
+ child_pid = evsel_list->workload.pid;
}
if (group)
@@ -628,10 +705,13 @@ static void nsec_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
{
double msecs = avg / 1e6;
const char *fmt = csv_output ? "%.6f%s%s" : "%18.6f%s%-25s";
+ char name[25];
aggr_printout(evsel, cpu, nr);
- fprintf(output, fmt, msecs, csv_sep, perf_evsel__name(evsel));
+ scnprintf(name, sizeof(name), "%s%s",
+ perf_evsel__name(evsel), csv_output ? "" : " (msec)");
+ fprintf(output, fmt, msecs, csv_sep, name);
if (evsel->cgrp)
fprintf(output, "%s%s", csv_sep, evsel->cgrp->name);
@@ -827,7 +907,7 @@ static void print_ll_cache_misses(int cpu,
static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
{
- double total, ratio = 0.0;
+ double total, ratio = 0.0, total2;
const char *fmt;
if (csv_output)
@@ -852,11 +932,10 @@ static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
if (perf_evsel__match(evsel, HARDWARE, HW_INSTRUCTIONS)) {
total = avg_stats(&runtime_cycles_stats[cpu]);
- if (total)
+ if (total) {
ratio = avg / total;
-
- fprintf(output, " # %5.2f insns per cycle ", ratio);
-
+ 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]));
@@ -919,10 +998,47 @@ static void abs_printout(int cpu, int nr, struct perf_evsel *evsel, double avg)
} else if (perf_evsel__match(evsel, HARDWARE, HW_CPU_CYCLES)) {
total = avg_stats(&runtime_nsecs_stats[cpu]);
+ if (total) {
+ ratio = avg / total;
+ fprintf(output, " # %8.3f GHz ", ratio);
+ }
+ } else if (transaction_run &&
+ perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX))) {
+ total = avg_stats(&runtime_cycles_stats[cpu]);
+ if (total)
+ fprintf(output,
+ " # %5.2f%% transactional cycles ",
+ 100.0 * (avg / total));
+ } else if (transaction_run &&
+ perf_evsel__cmp(evsel, nth_evsel(T_CYCLES_IN_TX_CP))) {
+ total = avg_stats(&runtime_cycles_stats[cpu]);
+ total2 = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
+ if (total2 < avg)
+ total2 = avg;
+ if (total)
+ fprintf(output,
+ " # %5.2f%% aborted cycles ",
+ 100.0 * ((total2-avg) / total));
+ } else if (transaction_run &&
+ perf_evsel__cmp(evsel, nth_evsel(T_TRANSACTION_START)) &&
+ avg > 0 &&
+ runtime_cycles_in_tx_stats[cpu].n != 0) {
+ total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
+
if (total)
- ratio = 1.0 * avg / total;
+ ratio = total / avg;
- fprintf(output, " # %8.3f GHz ", ratio);
+ fprintf(output, " # %8.0f cycles / transaction ", ratio);
+ } else if (transaction_run &&
+ perf_evsel__cmp(evsel, nth_evsel(T_ELISION_START)) &&
+ avg > 0 &&
+ runtime_cycles_in_tx_stats[cpu].n != 0) {
+ total = avg_stats(&runtime_cycles_in_tx_stats[cpu]);
+
+ if (total)
+ ratio = total / avg;
+
+ fprintf(output, " # %8.0f cycles / elision ", ratio);
} else if (runtime_nsecs_stats[cpu].n != 0) {
char unit = 'M';
@@ -1115,7 +1231,11 @@ static void print_stat(int argc, const char **argv)
if (!csv_output) {
fprintf(output, "\n");
fprintf(output, " Performance counter stats for ");
- if (!perf_target__has_task(&target)) {
+ if (target.system_wide)
+ fprintf(output, "\'system wide");
+ else if (target.cpu_list)
+ fprintf(output, "\'CPU(s) %s", target.cpu_list);
+ else if (!target__has_task(&target)) {
fprintf(output, "\'%s", argv[0]);
for (i = 1; i < argc; i++)
fprintf(output, " %s", argv[i]);
@@ -1236,6 +1356,16 @@ static int perf_stat_init_aggr_mode(void)
return 0;
}
+static int setup_events(const char * const *attrs, unsigned len)
+{
+ unsigned i;
+
+ for (i = 0; i < len; i++) {
+ if (parse_events(evsel_list, attrs[i]))
+ return -1;
+ }
+ return 0;
+}
/*
* Add default attributes, if there were no attributes specified or
@@ -1354,6 +1484,22 @@ static int add_default_attributes(void)
if (null_run)
return 0;
+ if (transaction_run) {
+ int err;
+ if (pmu_have_event("cpu", "cycles-ct") &&
+ pmu_have_event("cpu", "el-start"))
+ err = setup_events(transaction_attrs,
+ ARRAY_SIZE(transaction_attrs));
+ else
+ err = setup_events(transaction_limited_attrs,
+ ARRAY_SIZE(transaction_limited_attrs));
+ if (err < 0) {
+ fprintf(stderr, "Cannot set up transaction events\n");
+ return -1;
+ }
+ return 0;
+ }
+
if (!evsel_list->nr_entries) {
if (perf_evlist__add_default_attrs(evsel_list, default_attrs) < 0)
return -1;
@@ -1388,6 +1534,8 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
int output_fd = 0;
const char *output_name = NULL;
const struct option options[] = {
+ OPT_BOOLEAN('T', "transaction", &transaction_run,
+ "hardware transaction statistics"),
OPT_CALLBACK('e', "event", &evsel_list, "event",
"event selector. use 'perf list' to list available events",
parse_events_option),
@@ -1447,7 +1595,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
"perf stat [<options>] [<command>]",
NULL
};
- int status = -ENOMEM, run_idx;
+ int status = -EINVAL, run_idx;
const char *mode;
setlocale(LC_ALL, "");
@@ -1465,12 +1613,15 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
if (output_name && output_fd) {
fprintf(stderr, "cannot use both --output and --log-fd\n");
- usage_with_options(stat_usage, options);
+ parse_options_usage(stat_usage, options, "o", 1);
+ parse_options_usage(NULL, options, "log-fd", 0);
+ goto out;
}
if (output_fd < 0) {
fprintf(stderr, "argument to --log-fd must be a > 0\n");
- usage_with_options(stat_usage, options);
+ parse_options_usage(stat_usage, options, "log-fd", 0);
+ goto out;
}
if (!output) {
@@ -1507,56 +1658,66 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)
/* User explicitly passed -B? */
if (big_num_opt == 1) {
fprintf(stderr, "-B option not supported with -x\n");
- usage_with_options(stat_usage, options);
+ parse_options_usage(stat_usage, options, "B", 1);
+ parse_options_usage(NULL, options, "x", 1);
+ goto out;
} 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 && !perf_target__has_task(&target))
+ if (!argc && target__none(&target))
usage_with_options(stat_usage, options);
+
if (run_count < 0) {
- usage_with_options(stat_usage, options);
+ pr_err("Run count must be a positive number\n");
+ parse_options_usage(stat_usage, options, "r", 1);
+ goto out;
} else if (run_count == 0) {
forever = true;
run_count = 1;
}
/* no_aggr, cgroup are for system-wide only */
- if ((aggr_mode != AGGR_GLOBAL || nr_cgroups)
- && !perf_target__has_cpu(&target)) {
+ if ((aggr_mode != AGGR_GLOBAL || nr_cgroups) &&
+ !target__has_cpu(&target)) {
fprintf(stderr, "both cgroup and no-aggregation "
"modes only available in system-wide mode\n");
- usage_with_options(stat_usage, options);
- return -1;
+ parse_options_usage(stat_usage, options, "G", 1);
+ parse_options_usage(NULL, options, "A", 1);
+ parse_options_usage(NULL, options, "a", 1);
+ goto out;
}
if (add_default_attributes())
goto out;
- perf_target__validate(&target);
+ target__validate(&target);
if (perf_evlist__create_maps(evsel_list, &target) < 0) {
- if (perf_target__has_task(&target))
+ if (target__has_task(&target)) {
pr_err("Problems finding threads of monitor\n");
- if (perf_target__has_cpu(&target))
+ parse_options_usage(stat_usage, options, "p", 1);
+ parse_options_usage(NULL, options, "t", 1);
+ } else if (target__has_cpu(&target)) {
perror("failed to parse CPUs map");
-
- usage_with_options(stat_usage, options);
- return -1;
+ parse_options_usage(stat_usage, options, "C", 1);
+ parse_options_usage(NULL, options, "a", 1);
+ }
+ goto out;
}
if (interval && interval < 100) {
pr_err("print interval must be >= 100ms\n");
- usage_with_options(stat_usage, options);
- return -1;
+ parse_options_usage(stat_usage, options, "I", 1);
+ goto out_free_maps;
}
if (perf_evlist__alloc_stats(evsel_list, interval))
goto out_free_maps;
if (perf_stat_init_aggr_mode())
- goto out;
+ goto out_free_maps;
/*
* We dont want to block the signals - that would cause