linux-kernel - [PATCH v6 05/15] perf c2c: Output statistics for peer snooping

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Message-Id: <20220811062451.435810-6-leo.yan@linaro.org>
Date:   Thu, 11 Aug 2022 14:24:41 +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>,
        John Garry <john.garry@...wei.com>,
        Will Deacon <will@...nel.org>,
        James Clark <james.clark@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Kajol Jain <kjain@...ux.ibm.com>,
        Ali Saidi <alisaidi@...zon.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Anshuman Khandual <anshuman.khandual@....com>,
        Ian Rogers <irogers@...gle.com>, Like Xu <likexu@...cent.com>,
        German Gomez <german.gomez@....com>,
        Timothy Hayes <timothy.hayes@....com>,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     Leo Yan <leo.yan@...aro.org>
Subject: [PATCH v6 05/15] perf c2c: Output statistics for peer snooping

This patch outputs statistics for peer snooping for whole trace events
and global shared cache line.

Signed-off-by: Leo Yan <leo.yan@...aro.org>
Acked-by: Ian Rogers <irogers@...gle.com>
Tested-by: Ali Saidi <alisaidi@...zon.com>
Reviewed-by: Ali Saidi <alisaidi@...zon.com>
---
 tools/perf/builtin-c2c.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 4898ee57d156..37bebeb6c11b 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -2202,6 +2202,8 @@ static void print_c2c__display_stats(FILE *out)
 	fprintf(out, "  Load LLC Misses                   : %10d\n", llc_misses);
 	fprintf(out, "  Load access blocked by data       : %10d\n", stats->blk_data);
 	fprintf(out, "  Load access blocked by address    : %10d\n", stats->blk_addr);
+	fprintf(out, "  Load HIT Local Peer               : %10d\n", stats->lcl_peer);
+	fprintf(out, "  Load HIT Remote Peer              : %10d\n", stats->rmt_peer);
 	fprintf(out, "  LLC Misses to Local DRAM          : %10.1f%%\n", ((double)stats->lcl_dram/(double)llc_misses) * 100.);
 	fprintf(out, "  LLC Misses to Remote DRAM         : %10.1f%%\n", ((double)stats->rmt_dram/(double)llc_misses) * 100.);
 	fprintf(out, "  LLC Misses to Remote cache (HIT)  : %10.1f%%\n", ((double)stats->rmt_hit /(double)llc_misses) * 100.);
@@ -2230,6 +2232,7 @@ static void print_shared_cacheline_info(FILE *out)
 	fprintf(out, "  L1D hits on shared lines          : %10d\n", stats->ld_l1hit);
 	fprintf(out, "  L2D hits on shared lines          : %10d\n", stats->ld_l2hit);
 	fprintf(out, "  LLC hits on shared lines          : %10d\n", stats->ld_llchit + stats->lcl_hitm);
+	fprintf(out, "  Load hits on peer cache or nodes  : %10d\n", stats->lcl_peer + stats->rmt_peer);
 	fprintf(out, "  Locked Access on shared lines     : %10d\n", stats->locks);
 	fprintf(out, "  Blocked Access on shared lines    : %10d\n", stats->blk_data + stats->blk_addr);
 	fprintf(out, "  Store HITs on shared lines        : %10d\n", stats->store);
-- 
2.34.1