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perf stat: Add 'walltime_nsecs_stats' pointer to 'struct perf_stat_config' 

Add 'walltime_nsecs_stats' pointer to 'struct perf_stat_config', so that
it can be passed around and used outside the 'perf stat' command.

It's initialized to point to stat's walltime_nsecs_stats value.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180830063252.23729-32-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2018-08-30 08:32:40 +02:00 committed by Arnaldo Carvalho de Melo
parent 77e0faf855
commit 26893a6018
2 changed files with 9 additions and 7 deletions
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15
tools/perf/builtin-stat.c
View File

@ -195,11 +195,12 @@ static struct perf_stat perf_stat;
static volatile int done = 0;
static struct perf_stat_config stat_config = {
.aggr_mode = AGGR_GLOBAL,
.scale = true,
.unit_width = 4, /* strlen("unit") */
.run_count = 1,
.metric_only_len = METRIC_ONLY_LEN,
.aggr_mode = AGGR_GLOBAL,
.scale = true,
.unit_width = 4, /* strlen("unit") */
.run_count = 1,
.metric_only_len = METRIC_ONLY_LEN,
.walltime_nsecs_stats = &walltime_nsecs_stats,
};
static bool is_duration_time(struct perf_evsel *evsel)
@ -1671,7 +1672,7 @@ static double timeval2double(struct timeval *t)
static void print_footer(struct perf_stat_config *config)
{
double avg = avg_stats(&walltime_nsecs_stats) / NSEC_PER_SEC;
double avg = avg_stats(config->walltime_nsecs_stats) / NSEC_PER_SEC;
FILE *output = config->output;
int n;
@ -1690,7 +1691,7 @@ static void print_footer(struct perf_stat_config *config)
fprintf(output, " %17.9f seconds sys\n", ru_stime);
}
} else {
double sd = stddev_stats(&walltime_nsecs_stats) / NSEC_PER_SEC;
double sd = stddev_stats(config->walltime_nsecs_stats) / NSEC_PER_SEC;
/*
* Display at most 2 more significant
* digits than the stddev inaccuracy.

1
tools/perf/util/stat.h
View File

@ -105,6 +105,7 @@ struct perf_stat_config {
struct runtime_stat *stats;
int stats_num;
const char *csv_sep;
struct stats *walltime_nsecs_stats;
};
void update_stats(struct stats *stats, u64 val);