linux-kernel - [PATCH] perf: arm-spe: Fix check error when synthesizing events

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Date:   Fri, 24 Jul 2020 15:26:28 +0800
From:   Wei Li <liwei391@...wei.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        "Namhyung Kim" <namhyung@...nel.org>,
        James Clark <james.clark@....com>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Leo Yan <leo.yan@...aro.org>
CC:     <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, <guohanjun@...wei.com>
Subject: [PATCH] perf: arm-spe: Fix check error when synthesizing events

In arm_spe_read_record(), when we are processing an events packet,
'decoder->packet.index' is the length of payload, which has been
transformed in payloadlen(). So correct the check of 'idx'.

Signed-off-by: Wei Li <liwei391@...wei.com>
---
 tools/perf/util/arm-spe-decoder/arm-spe-decoder.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
index 302a14d0aca9..93e063f22be5 100644
--- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
+++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
@@ -182,15 +182,15 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder)
 			if (payload & BIT(EV_TLB_ACCESS))
 				decoder->record.type |= ARM_SPE_TLB_ACCESS;
 
-			if ((idx == 1 || idx == 2 || idx == 3) &&
+			if ((idx == 2 || idx == 4 || idx == 8) &&
 			    (payload & BIT(EV_LLC_MISS)))
 				decoder->record.type |= ARM_SPE_LLC_MISS;
 
-			if ((idx == 1 || idx == 2 || idx == 3) &&
+			if ((idx == 2 || idx == 4 || idx == 8) &&
 			    (payload & BIT(EV_LLC_ACCESS)))
 				decoder->record.type |= ARM_SPE_LLC_ACCESS;
 
-			if ((idx == 1 || idx == 2 || idx == 3) &&
+			if ((idx == 2 || idx == 4 || idx == 8) &&
 			    (payload & BIT(EV_REMOTE_ACCESS)))
 				decoder->record.type |= ARM_SPE_REMOTE_ACCESS;
 
-- 
2.17.1