[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20220427155013.1833222-5-leo.yan@linaro.org>
Date: Wed, 27 Apr 2022 23:50:06 +0800
From: Leo Yan <leo.yan@...aro.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Ian Rogers <irogers@...gle.com>, Alyssa Ross <hi@...ssa.is>,
Like Xu <likexu@...cent.com>, Kajol Jain <kjain@...ux.ibm.com>,
Li Huafei <lihuafei1@...wei.com>,
Ali Saidi <alisaidi@...zon.com>,
German Gomez <german.gomez@....com>,
James Clark <james.clark@....com>,
linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Leo Yan <leo.yan@...aro.org>
Subject: [PATCH v1 04/11] perf mem: Add statistics for peer snooping
Since we have added the flag PERF_MEM_SNOOPX_PEER to support cache
snooping from peer core or cluster, this patch is to add statistics for
this new flag.
Signed-off-by: Leo Yan <leo.yan@...aro.org>
Tested-by: Ali Saidi <alisaidi@...zon.com>
---
tools/perf/util/mem-events.c | 11 ++++++++++-
tools/perf/util/mem-events.h | 1 +
2 files changed, 11 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index bfbac365e1e4..2086f067359b 100644
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -525,6 +525,7 @@ int c2c_decode_stats(struct c2c_stats *stats, struct mem_info *mi)
u64 op = data_src->mem_op;
u64 lvl = data_src->mem_lvl;
u64 snoop = data_src->mem_snoop;
+ u64 snoopx = data_src->mem_snoopx;
u64 lock = data_src->mem_lock;
u64 blk = data_src->mem_blk;
u64 lvl_num = data_src->mem_lvl_num;
@@ -568,10 +569,17 @@ do { \
if (lvl & P(LVL, IO)) stats->ld_io++;
if (lvl & P(LVL, LFB)) stats->ld_fbhit++;
if (lvl & P(LVL, L1 )) stats->ld_l1hit++;
- if (lvl & P(LVL, L2 )) stats->ld_l2hit++;
+ if (lvl & P(LVL, L2)) {
+ if (snoopx & P(SNOOPX, PEER))
+ stats->ld_peer++;
+ else
+ stats->ld_l2hit++;
+ }
if (lvl & P(LVL, L3 )) {
if (snoop & P(SNOOP, HITM))
HITM_INC(lcl_hitm);
+ else if (snoopx & P(SNOOPX, PEER))
+ stats->ld_peer++;
else
stats->ld_llchit++;
}
@@ -662,6 +670,7 @@ void c2c_add_stats(struct c2c_stats *stats, struct c2c_stats *add)
stats->ld_l1hit += add->ld_l1hit;
stats->ld_l2hit += add->ld_l2hit;
stats->ld_llchit += add->ld_llchit;
+ stats->ld_peer += add->ld_peer;
stats->lcl_hitm += add->lcl_hitm;
stats->rmt_hitm += add->rmt_hitm;
stats->tot_hitm += add->tot_hitm;
diff --git a/tools/perf/util/mem-events.h b/tools/perf/util/mem-events.h
index e0e8057c52e8..7b6c74e74354 100644
--- a/tools/perf/util/mem-events.h
+++ b/tools/perf/util/mem-events.h
@@ -75,6 +75,7 @@ struct c2c_stats {
u32 ld_l1hit; /* count of loads that hit L1D */
u32 ld_l2hit; /* count of loads that hit L2D */
u32 ld_llchit; /* count of loads that hit LLC */
+ u32 ld_peer; /* count of loads that hit peer core or cluster cache */
u32 lcl_hitm; /* count of loads with local HITM */
u32 rmt_hitm; /* count of loads with remote HITM */
u32 tot_hitm; /* count of loads with local and remote HITM */
--
2.25.1
Powered by blists - more mailing lists