linux-kernel - [tip:perfcounters/urgent] perf top: Add ppc64 specific skip symbols and strip ppc64 . prefix

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Message-ID: <tip-3a3393ef75a14ae259a82f3f38624efa17884168@git.kernel.org>
Date:	Tue, 30 Jun 2009 23:28:24 GMT
From:	tip-bot for Anton Blanchard <anton@...ba.org>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, anton@...ba.org, hpa@...or.com,
	mingo@...hat.com, tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perfcounters/urgent] perf top: Add ppc64 specific skip symbols and strip ppc64 . prefix

Commit-ID:  3a3393ef75a14ae259a82f3f38624efa17884168
Gitweb:     http://git.kernel.org/tip/3a3393ef75a14ae259a82f3f38624efa17884168
Author:     Anton Blanchard <anton@...ba.org>
AuthorDate: Wed, 1 Jul 2009 09:00:47 +1000
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Wed, 1 Jul 2009 01:25:19 +0200

perf top: Add ppc64 specific skip symbols and strip ppc64 . prefix

Filter out some ppc64 specific idle loop functions and remove
leading '.' on ppc64 text symbols.

Signed-off-by: Anton Blanchard <anton@...ba.org>
Cc: a.p.zijlstra@...llo.nl
Cc: paulus@...ba.org
LKML-Reference: <20090630230140.995643441@...ba.org>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 tools/perf/builtin-top.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 731ec6d..0506cd6 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -293,6 +293,8 @@ char *skip_symbols[] = {
 	"enter_idle",
 	"exit_idle",
 	"mwait_idle",
+	"ppc64_runlatch_off",
+	"pseries_dedicated_idle_sleep",
 	NULL
 };
 
@@ -303,6 +305,13 @@ static int symbol_filter(struct dso *self, struct symbol *sym)
 	const char *name = sym->name;
 	int i;
 
+	/*
+	 * ppc64 uses function descriptors and appends a '.' to the
+	 * start of every instruction address. Remove it.
+	 */
+	if (name[0] == '.')
+		name++;
+
 	if (!strcmp(name, "_text") ||
 	    !strcmp(name, "_etext") ||
 	    !strcmp(name, "_sinittext") ||
--
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