linux-kernel - [PATCH 6/9] perf, tools: Allow events with dot

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Message-Id: <1400191392-11569-7-git-send-email-andi@firstfloor.org>
Date:	Thu, 15 May 2014 15:03:09 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	jolsa@...hat.com
Cc:	linux-kernel@...r.kernel.org, namhyung@...nel.org,
	acme@...radead.org, Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 6/9] perf, tools: Allow events with dot

From: Andi Kleen <ak@...ux.intel.com>

The Intel events use a dot to separate event name and unit mask.
Allow dot in names in the scanner, and remove special handling
of dot as EOF. Also remove the hack in jevents to replace dot
with underscore. This way dotted events can be specified
directly by the user.

I'm not fully sure this change to the scanner is correct
(what was the dot special case good for?), but I haven't
found anything that breaks with it so far at least.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 tools/perf/util/jevents.c      | 9 +--------
 tools/perf/util/parse-events.l | 3 +--
 2 files changed, 2 insertions(+), 10 deletions(-)

diff --git a/tools/perf/util/jevents.c b/tools/perf/util/jevents.c
index b26c0b6..fe51dc8 100644
--- a/tools/perf/util/jevents.c
+++ b/tools/perf/util/jevents.c
@@ -90,15 +90,8 @@ static void addfield(char *map, char **dst, const char *sep,
 
 static void fixname(char *s)
 {
-	for (; *s; s++) {
+	for (; *s; s++)
 		*s = tolower(*s);
-		/*
-		 * Remove '.' for now, until the parser
-		 * can deal with it.
-		 */
-		if (*s == '.')
-			*s = '_';
-	}
 }
 
 static void fixdesc(char *s)
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 3432995..709fa3b 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -81,7 +81,7 @@ 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_minus	[a-zA-Z_*?][a-zA-Z0-9\-_*?]*
+name_minus	[a-zA-Z_*?][a-zA-Z0-9\-_*?.]*
 /* If you add a modifier you need to update check_modifier() */
 modifier_event	[ukhpGHSD]+
 modifier_bp	[rwx]{1,3}
@@ -119,7 +119,6 @@ modifier_bp	[rwx]{1,3}
 			return PE_EVENT_NAME;
 		}
 
-.		|
 <<EOF>>		{
 			BEGIN(INITIAL); yyless(0);
 		}
-- 
1.9.0

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