linux-kernel - [tip:perf/core] ftrace/recordmcount: Modify only executable sections

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Date:	Thu, 16 Jun 2011 14:05:31 GMT
From:	tip-bot for Steven Rostedt <srostedt@...hat.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	rostedt@...dmis.org, srostedt@...hat.com, jreiser@...wagon.com,
	tglx@...utronix.de
Subject: [tip:perf/core] ftrace/recordmcount: Modify only executable sections

Commit-ID:  df2ccb69454d022ce99e3a3b7ee7f9fb4a4e9563
Gitweb:     http://git.kernel.org/tip/df2ccb69454d022ce99e3a3b7ee7f9fb4a4e9563
Author:     Steven Rostedt <srostedt@...hat.com>
AuthorDate: Wed, 13 Apr 2011 13:31:08 -0400
Committer:  Steven Rostedt <rostedt@...dmis.org>
CommitDate: Tue, 17 May 2011 10:41:39 -0400

ftrace/recordmcount: Modify only executable sections

PROGBITS is not enough to determine if the section should be modified
or not. Only process sections that are marked as executable.

Cc: John Reiser <jreiser@...wagon.com>
Link: http://lkml.kernel.org/r/20110421023737.991485123@goodmis.org
Signed-off-by: Steven Rostedt <rostedt@...dmis.org>
---
 scripts/recordmcount.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/scripts/recordmcount.h b/scripts/recordmcount.h
index ac7b330..7f8d5c4 100644
--- a/scripts/recordmcount.h
+++ b/scripts/recordmcount.h
@@ -360,6 +360,7 @@ __has_rel_mcount(Elf_Shdr const *const relhdr,  /* is SHT_REL or SHT_RELA */
 		succeed_file();
 	}
 	if (w(txthdr->sh_type) != SHT_PROGBITS ||
+	    !(w(txthdr->sh_flags) & SHF_EXECINSTR) ||
 	    !is_mcounted_section_name(txtname))
 		return NULL;
 	return txtname;
--
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