AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2025-02-17 12:57:50 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

perf stat: Extend rbtree to support per-thread shadow stats

Browse Source 
Previously the rbtree was used to link generic metrics.

This patches adds new ctx/type/stat into rbtree keys because we will use
this rbtree to maintain shadow metrics to replace original a couple of
static arrays for supporting per-thread shadow stats.

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/1512482591-4646-3-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 22:03:02 +08:00 committed by Arnaldo Carvalho de Melo
parent e5fcc2abc3
commit 49cd456af1
1 changed files with 27 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
tools/perf/util/stat-shadow.c
View File

@ -45,7 +45,10 @@ struct stats walltime_nsecs_stats;
struct saved_value {
struct rb_node rb_node;
struct perf_evsel *evsel;
enum stat_type type;
int ctx;
int cpu;
struct runtime_stat *stat;
struct stats stats;
};
@ -58,6 +61,30 @@ static int saved_value_cmp(struct rb_node *rb_node, const void *entry)
if (a->cpu != b->cpu)
return a->cpu - b->cpu;
/*
* 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->evsel == NULL && b->evsel == NULL) {
if (a->stat == b->stat)
return 0;
if ((char *)a->stat < (char *)b->stat)
return -1;
return 1;
}
if (a->evsel == b->evsel)
return 0;
if ((char *)a->evsel < (char *)b->evsel)