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From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>,
	Andrew Morton <akpm@linux-foundation.org>,
	Frederic Weisbecker <fweisbec@gmail.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	John Reiser <jreiser@bitwagon.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Subject: [RFC][PATCH 03/11] ftrace: Add .kprobe.text section to whitelist for recordmcount.c
Date: Wed, 20 Apr 2011 22:28:28 -0400	[thread overview]
Message-ID: <20110421023737.743350547@goodmis.org> (raw)
In-Reply-To: 20110421022825.535486725@goodmis.org

[-- Attachment #1: 0003-ftrace-Add-.kprobe.text-section-to-whitelist-for-rec.patch --]
[-- Type: text/plain, Size: 1251 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

The .kprobe.text section is safe to modify mcount to nop and tracing.
Add it to the whitelist in recordmcount.c and recordmcount.pl.

Cc: John Reiser <jreiser@bitwagon.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 scripts/recordmcount.c  |    1 +
 scripts/recordmcount.pl |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index 4ebd839..37c5965 100644
--- a/scripts/recordmcount.c
+++ b/scripts/recordmcount.c
@@ -211,6 +211,7 @@ is_mcounted_section_name(char const *const txtname)
 		strcmp(".sched.text",    txtname) == 0 ||
 		strcmp(".spinlock.text", txtname) == 0 ||
 		strcmp(".irqentry.text", txtname) == 0 ||
+		strcmp(".kprobes.text", txtname) == 0 ||
 		strcmp(".text.unlikely", txtname) == 0;
 }
 
diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
index 4be0dee..a871cd4 100755
--- a/scripts/recordmcount.pl
+++ b/scripts/recordmcount.pl
@@ -134,6 +134,7 @@ my %text_sections = (
      ".sched.text" => 1,
      ".spinlock.text" => 1,
      ".irqentry.text" => 1,
+     ".kprobes.text" => 1,
      ".text.unlikely" => 1,
 );
 
-- 
1.7.2.3



  parent reply	other threads:[~2011-04-21  2:39 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-04-21  2:28 [RFC][PATCH 00/11] ftrace/recordmcount: Remove useless mcount calls not being traced Steven Rostedt
2011-04-21  2:28 ` [RFC][PATCH 01/11] ftrace/trivial: Clean up recordmcount.c to use Linux style comparisons Steven Rostedt
2011-04-21  8:46   ` Alan Cox
2011-04-21 11:36     ` Steven Rostedt
2011-04-21 12:28       ` Steven Rostedt
2011-04-22 15:09   ` John Reiser
2011-04-22 15:52     ` Thiago Farina
2011-04-22 16:05       ` Steven Rostedt
2011-04-26 18:52         ` Thiago Farina
2011-04-26 19:09           ` Steven Rostedt
2011-04-22 16:13     ` Steven Rostedt
2011-04-22 17:40       ` John Reiser
2011-04-22 17:56         ` H. Peter Anvin
2011-05-18 18:31   ` [tip:perf/core] " tip-bot for Steven Rostedt
2011-06-16 14:04   ` tip-bot for Steven Rostedt
2011-04-21  2:28 ` [RFC][PATCH 02/11] ftrace/trivial: Clean up record mcount to use Linux switch style Steven Rostedt
2011-05-18 18:31   ` [tip:perf/core] " tip-bot for Steven Rostedt
2011-06-16 14:04   ` tip-bot for Steven Rostedt
2011-04-21  2:28 ` Steven Rostedt [this message]
2011-05-18 18:32   ` [tip:perf/core] ftrace: Add .kprobe.text section to whitelist for recordmcount.c tip-bot for Steven Rostedt
2011-06-16 14:05   ` tip-bot for Steven Rostedt
2011-04-21  2:28 ` [RFC][PATCH 04/11] ftrace/recordmcount: Modify only executable sections Steven Rostedt
2011-05-18 18:32   ` [tip:perf/core] " tip-bot for Steven Rostedt
2011-06-16 14:05   ` tip-bot for Steven Rostedt
2011-04-21  2:28 ` [RFC][PATCH 05/11] ftrace/recordmcount: Make ignored mcount calls into nops at compile time Steven Rostedt
2011-05-18 18:32   ` [tip:perf/core] " tip-bot for Steven Rostedt
2011-06-16 14:05   ` tip-bot for Steven Rostedt
2011-04-21  2:28 ` [RFC][PATCH 06/11] ftrace/recordmcount: Add warning logic to warn on mcount not recorded Steven Rostedt
2011-05-18 18:33   ` [tip:perf/core] " tip-bot for Steven Rostedt
2011-06-16 14:06   ` tip-bot for Steven Rostedt
2011-04-21  2:28 ` [RFC][PATCH 07/11] kbuild/recordmcount: Add RECORDMCOUNT_WARN to warn about mcount callers Steven Rostedt
2011-04-21  2:40   ` Steven Rostedt
2011-04-21 20:40   ` Michal Marek
2011-04-26 19:08     ` Steven Rostedt
2011-05-18 18:33   ` [tip:perf/core] " tip-bot for Steven Rostedt
2011-06-16 14:06   ` tip-bot for Steven Rostedt
2011-04-21  2:28 ` [RFC][PATCH 08/11] ftrace: Avoid recording mcount on .init sections directly Steven Rostedt
2011-05-18 18:34   ` [tip:perf/core] " tip-bot for Steven Rostedt
2011-06-16 14:07   ` tip-bot for Steven Rostedt
2011-04-21  2:28 ` [RFC][PATCH 09/11] ftrace/x86: Do not trace .discard.text section Steven Rostedt
2011-05-18 18:34   ` [tip:perf/core] " tip-bot for Steven Rostedt
2011-06-16 14:07   ` tip-bot for Steven Rostedt
2011-04-21  2:28 ` [RFC][PATCH 10/11] ftrace/recordmcount: Remove duplicate code to find mcount symbol Steven Rostedt
2011-05-18 18:34   ` [tip:perf/core] " tip-bot for Steven Rostedt
2011-06-16 14:07   ` tip-bot for Steven Rostedt
2011-04-21  2:28 ` [RFC][PATCH 11/11] ftrace/recordmcount: Add helper function get_sym_str_and_relp() Steven Rostedt
2011-05-18 18:35   ` [tip:perf/core] " tip-bot for Steven Rostedt
2011-06-16 14:08   ` tip-bot for Steven Rostedt

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