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From:   Leo Yan <leo.yan@linaro.org>
To:     Arnaldo Carvalho de Melo <acme@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Jiri Olsa <jolsa@kernel.org>,
        Namhyung Kim <namhyung@kernel.org>,
        Ian Rogers <irogers@google.com>,
        John Garry <john.garry@huawei.com>,
        Will Deacon <will@kernel.org>,
        James Clark <james.clark@arm.com>,
        German Gomez <german.gomez@arm.com>,
        Ali Saidi <alisaidi@amazon.com>, Joe Mario <jmario@redhat.com>,
        Adam Li <adam.li@amperecomputing.com>,
        linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org
Cc:     Leo Yan <leo.yan@linaro.org>, Kajol Jain <kjain@linux.ibm.com>
Subject: [PATCH v5 03/17] perf mem: Print snoop peer flag
Date:   Sat,  4 Jun 2022 12:28:06 +0800
Message-Id: <20220604042820.2270916-4-leo.yan@linaro.org>
In-Reply-To: <20220604042820.2270916-1-leo.yan@linaro.org>
References: <20220604042820.2270916-1-leo.yan@linaro.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Since PERF_MEM_SNOOPX_PEER flag is a new snoop type, print this flag if
it is set.

Before:
       memstress  3603 [020]   122.463754:          1            l1d-miss:       8688000842 |OP LOAD|LVL L3 or L3 hit|SNP N/A|TLB Walker hit|LCK No|BLK  N/A               aaaac17c3e88 [unknown] (/home/ubuntu/memstress)
       memstress  3603 [020]   122.463754:          1          l1d-access:       8688000842 |OP LOAD|LVL L3 or L3 hit|SNP N/A|TLB Walker hit|LCK No|BLK  N/A               aaaac17c3e88 [unknown] (/home/ubuntu/memstress)
       memstress  3603 [020]   122.463754:          1            llc-miss:       8688000842 |OP LOAD|LVL L3 or L3 hit|SNP N/A|TLB Walker hit|LCK No|BLK  N/A               aaaac17c3e88 [unknown] (/home/ubuntu/memstress)
       memstress  3603 [020]   122.463754:          1          llc-access:       8688000842 |OP LOAD|LVL L3 or L3 hit|SNP N/A|TLB Walker hit|LCK No|BLK  N/A               aaaac17c3e88 [unknown] (/home/ubuntu/memstress)
       memstress  3603 [020]   122.463754:          1          tlb-access:       8688000842 |OP LOAD|LVL L3 or L3 hit|SNP N/A|TLB Walker hit|LCK No|BLK  N/A               aaaac17c3e88 [unknown] (/home/ubuntu/memstress)
       memstress  3603 [020]   122.463754:          1              memory:       8688000842 |OP LOAD|LVL L3 or L3 hit|SNP N/A|TLB Walker hit|LCK No|BLK  N/A               aaaac17c3e88 [unknown] (/home/ubuntu/memstress)

After:

       memstress  3603 [020]   122.463754:          1            l1d-miss:       8688000842 |OP LOAD|LVL L3 or L3 hit|SNP Peer|TLB Walker hit|LCK No|BLK  N/A              aaaac17c3e88 [unknown] (/home/ubuntu/memstress)
       memstress  3603 [020]   122.463754:          1          l1d-access:       8688000842 |OP LOAD|LVL L3 or L3 hit|SNP Peer|TLB Walker hit|LCK No|BLK  N/A              aaaac17c3e88 [unknown] (/home/ubuntu/memstress)
       memstress  3603 [020]   122.463754:          1            llc-miss:       8688000842 |OP LOAD|LVL L3 or L3 hit|SNP Peer|TLB Walker hit|LCK No|BLK  N/A              aaaac17c3e88 [unknown] (/home/ubuntu/memstress)
       memstress  3603 [020]   122.463754:          1          llc-access:       8688000842 |OP LOAD|LVL L3 or L3 hit|SNP Peer|TLB Walker hit|LCK No|BLK  N/A              aaaac17c3e88 [unknown] (/home/ubuntu/memstress)
       memstress  3603 [020]   122.463754:          1          tlb-access:       8688000842 |OP LOAD|LVL L3 or L3 hit|SNP Peer|TLB Walker hit|LCK No|BLK  N/A              aaaac17c3e88 [unknown] (/home/ubuntu/memstress)
       memstress  3603 [020]   122.463754:          1              memory:       8688000842 |OP LOAD|LVL L3 or L3 hit|SNP Peer|TLB Walker hit|LCK No|BLK  N/A              aaaac17c3e88 [unknown] (/home/ubuntu/memstress)

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Ali Saidi <alisaidi@amazon.com>
Tested-by: Ali Saidi <alisaidi@amazon.com>
Reviewed-by: Kajol Jain<kjain@linux.ibm.com>
---
 tools/perf/util/mem-events.c | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index c3c21a9c350b..5dca1882c284 100644
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -410,6 +410,11 @@ static const char * const snoop_access[] = {
 	"HitM",
 };
 
+static const char * const snoopx_access[] = {
+	"Fwd",
+	"Peer",
+};
+
 int perf_mem__snp_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
 {
 	size_t i, l = 0;
@@ -430,13 +435,20 @@ int perf_mem__snp_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
 		}
 		l += scnprintf(out + l, sz - l, snoop_access[i]);
 	}
-	if (mem_info &&
-	     (mem_info->data_src.mem_snoopx & PERF_MEM_SNOOPX_FWD)) {
+
+	m = 0;
+	if (mem_info)
+		m = mem_info->data_src.mem_snoopx;
+
+	for (i = 0; m && i < ARRAY_SIZE(snoopx_access); i++, m >>= 1) {
+		if (!(m & 0x1))
+			continue;
+
 		if (l) {
 			strcat(out, " or ");
 			l += 4;
 		}
-		l += scnprintf(out + l, sz - l, "Fwd");
+		l += scnprintf(out + l, sz - l, snoopx_access[i]);
 	}
 
 	if (*out == '\0')
-- 
2.25.1