linux-kernel - [tip:perf/core] core_kernel_data(): Fix architectures that do not define

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Message-ID: <tip-i878c8a0e0g0ep4v7i6vxnhz@git.kernel.org>
Date:	Thu, 19 May 2011 23:37:09 GMT
From:	tip-bot for Ingo Molnar <mingo@...e.hu>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, paulmck@...ux.vnet.ibm.com,
	hpa@...or.com, mingo@...hat.com, rostedt@...dmis.org,
	tglx@...utronix.de, mingo@...e.hu
Subject: [tip:perf/core] core_kernel_data(): Fix architectures that do not define _sdata

Commit-ID:  c5fc472171ec4f96d06d1ac039d88f9b89bb95db
Gitweb:     http://git.kernel.org/tip/c5fc472171ec4f96d06d1ac039d88f9b89bb95db
Author:     Ingo Molnar <mingo@...e.hu>
AuthorDate: Fri, 20 May 2011 01:22:14 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Fri, 20 May 2011 01:27:16 +0200

core_kernel_data(): Fix architectures that do not define _sdata

Some architectures such as Alpha do not define _sdata but _data:

  kernel/built-in.o: In function `core_kernel_data':
  kernel/extable.c:77: undefined reference to `_sdata'

So expand the scope of the data range to the text addresses too,
this might be more correct anyway because this way we can
cover readonly variables as well.

Cc: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Link: http://lkml.kernel.org/n/tip-i878c8a0e0g0ep4v7i6vxnhz@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 kernel/extable.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/extable.c b/kernel/extable.c
index c2d625f..d44aac0 100644
--- a/kernel/extable.c
+++ b/kernel/extable.c
@@ -74,7 +74,7 @@ int core_kernel_text(unsigned long addr)
 
 int core_kernel_data(unsigned long addr)
 {
-	if (addr >= (unsigned long)_sdata &&
+	if (addr >= (unsigned long)_stext &&
 	    addr < (unsigned long)_edata)
 		return 1;
 	return 0;
--
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