xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

perf stat: Allocate shadow stats buffer for threads

Browse Source 
After perf_evlist__create_maps() being executed, we can get all threads
from /proc. And via thread_map__nr(), we can also get the number of
threads.

With the number of threads, the patch allocates a buffer which will
record the shadow stats for these threads.

The buffer pointer is saved in stat_config.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1512482591-4646-8-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jin Yao
2017-12-05 22:03:07 +08:00
committed by Arnaldo Carvalho de Melo
parent 6a1e2c5c26
commit 56739444d8
2 changed files with 47 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
tools/perf/util/stat.h
View File

@@ -90,6 +90,8 @@ struct perf_stat_config {
bool scale;
FILE *output;
unsigned int interval;
struct runtime_stat *stats;
int stats_num;
};
void update_stats(struct stats *stats, u64 val);