Thread (9 messages) flat view 9 messages, 3 authors, 2021-03-08

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

From: John Garry <hidden>
Date: 2021-03-04 09:38:22
Also in: lkml

On 04/03/2021 03:26, Shunsuke Nakamura wrote:
From: Shunsuke Nakamura <redacted>

Add the lexical definition of event name so that the numbers are recognizable.
Sorry for the hassle, but it's not clear that we got a definitive 
conclusion on this patch from v6 series:

https://lore.kernel.org/lkml/YCuo01Wxxe%2FMCrC5@krava/ (local)

Would it be so much worse for you to change format of these event names 
to not start with a numberic?

Thanks


quoted hunk ↗ jump to hunk
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 <redacted>
Acked-by: John Garry <redacted>
---
  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_*?\.:]+)?

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