linux-kernel - [PATCH v3 3/4] perf report: Add SPE options to --itrace argument

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Date:   Fri,  7 Feb 2020 15:21:41 +0000
From:   James Clark <james.clark@....com>
To:     jolsa@...hat.com, liwei391@...wei.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     nd@....com, Tan Xiaojun <tanxiaojun@...wei.com>,
        James Clark <james.clark@....com>,
        Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Al Grant <al.grant@....com>, Namhyung Kim <namhyung@...nel.org>
Subject: [PATCH v3 3/4] perf report: Add SPE options to --itrace argument

From: Tan Xiaojun <tanxiaojun@...wei.com>

The previous patch added support in "perf report" for some arm-spe
events(llc-miss, tlb-miss, branch-miss, remote_access). This patch
adds their help instructions.

Signed-off-by: Tan Xiaojun <tanxiaojun@...wei.com>
Tested-by: Qi Liu <liuqi115@...ilicon.com>
Signed-off-by: James Clark <james.clark@....com>
Cc: Will Deacon <will@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Tan Xiaojun <tanxiaojun@...wei.com>
Cc: Al Grant <al.grant@....com>
Cc: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/Documentation/itrace.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt
index 82ff7dad40c2..8e1488de1fb3 100644
--- a/tools/perf/Documentation/itrace.txt
+++ b/tools/perf/Documentation/itrace.txt
@@ -1,5 +1,5 @@
 		i	synthesize instructions events
-		b	synthesize branches events
+		b	synthesize branches events (branch misses on Arm)
 		c	synthesize branches events (calls only)
 		r	synthesize branches events (returns only)
 		x	synthesize transactions events
@@ -12,6 +12,9 @@
 		g	synthesize a call chain (use with i or x)
 		l	synthesize last branch entries (use with i or x)
 		s       skip initial number of events
+		m	synthesize LLC miss events
+		t	synthesize TLB miss events
+		a	synthesize remote access events
 
 	The default is all events i.e. the same as --itrace=ibxwpe,
 	except for perf script where it is --itrace=ce
-- 
2.17.1