linux-kernel - [PATCH v7 2/4] perf tools: Add lexical definition of event name

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Message-Id: <20210304032610.3112996-3-nakamura.shun@fujitsu.com>
Date:   Thu,  4 Mar 2021 12:26:08 +0900
From:   Shunsuke Nakamura <nakamura.shun@...itsu.com>
To:     john.garry@...wei.com, will@...nel.org, mathieu.poirier@...aro.org,
        leo.yan@...aro.org, peterz@...radead.org, mingo@...hat.com,
        acme@...nel.org, mark.rutland@....com,
        alexander.shishkin@...ux.intel.com, jolsa@...hat.com,
        namhyung@...nel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v7 2/4] perf tools: Add lexical definition of event name

From: Shunsuke Nakamura <nakamura.shun@...fujitsu.com>

Add the lexical definition of event name so that the numbers are recognizable.

A64FX defines an event name that starts with a number.
 - 0inst_commit
 - 1inst_commit
 - 2inst_commit
 - 3inst_commit
 - 4inst_commit

Signed-off-by: Shunsuke Nakamura <nakamura.shun@...itsu.com>
Acked-by: John Garry <john.garry@...wei.com>
---
 tools/perf/util/parse-events.l | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 0b36285a9435..33f627187415 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -205,7 +205,7 @@ bpf_source	[^,{}]+\.c[a-zA-Z0-9._]*
 num_dec		[0-9]+
 num_hex		0x[a-fA-F0-9]+
 num_raw_hex	[a-fA-F0-9]+
-name		[a-zA-Z_*?\[\]][a-zA-Z0-9_*?.\[\]]*
+name		[a-zA-Z0-9_*?\[\]][a-zA-Z0-9_*?.\[\]]*
 name_tag	[\'][a-zA-Z_*?\[\]][a-zA-Z0-9_*?\-,\.\[\]:=]*[\']
 name_minus	[a-zA-Z_*?][a-zA-Z0-9\-_*?.:]*
 drv_cfg_term	[a-zA-Z0-9_\.]+(=[a-zA-Z0-9_*?\.:]+)?
-- 
2.25.1