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

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>

1 files changed, 3 insertions, 0 deletions

diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index efaf263464b9..c3c21a9c350b 100644
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -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;