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perf mem: Add stats for store operation with no available memory level

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Sometimes we don't know memory store operations happen on exactly which
memory (or cache) level, the memory level flag is set to PERF_MEM_LVL_NA
in this case; a practical example is Arm SPE AUX trace sets this flag
for all store operations due to absent info for cache level.

This patch is to add a new item "st_na" in structure c2c_stats to add
statistics for store operations with no available cache level.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adam Li <adamli@amperemail.onmicrosoft.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ali Saidi <alisaidi@amazon.com>
Cc: Alyssa Ross <hi@alyssa.is>
Cc: German Gomez <german.gomez@arm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Li Huafei <lihuafei1@huawei.com>
Cc: Like Xu <likexu@tencent.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220518055729.1869566-2-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Leo Yan 2022-05-18 13:57:19 +08:00 committed by Arnaldo Carvalho de Melo
parent 508c9fbce0
commit 9845063710
2 changed files with 4 additions and 0 deletions
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3
tools/perf/util/mem-events.c
View file

@ -609,6 +609,8 @@ do { \
}
if (lvl & P(LVL, MISS))
if (lvl & P(LVL, L1)) stats->st_l1miss++;
if (lvl & P(LVL, NA))
stats->st_na++;
} else {
/* unparsable data_src? */
stats->noparse++;
@ -635,6 +637,7 @@ void c2c_add_stats(struct c2c_stats *stats, struct c2c_stats *add)
stats->st_noadrs += add->st_noadrs;
stats->st_l1hit += add->st_l1hit;
stats->st_l1miss += add->st_l1miss;
stats->st_na += add->st_na;
stats->load += add->load;
stats->ld_excl += add->ld_excl;
stats->ld_shared += add->ld_shared;

1
tools/perf/util/mem-events.h
View file

@ -63,6 +63,7 @@ struct c2c_stats {
u32 st_noadrs; /* cacheable store with no address */
u32 st_l1hit; /* count of stores that hit L1D */
u32 st_l1miss; /* count of stores that miss L1D */
u32 st_na; /* count of stores with memory level is not available */
u32 load; /* count of all loads in trace */
u32 ld_excl; /* exclusive loads, rmt/lcl DRAM - snp none/miss */
u32 ld_shared; /* shared loads, rmt/lcl DRAM - snp hit */