linux-kernel - [PATCH][bugzilla #8679] therm_throt.c: Fix section mismatch

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Date:	Tue, 21 Aug 2007 10:07:31 +0530 (IST)
From:	Satyam Sharma <satyam@...radead.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Sam Ravnborg <sam@...nborg.org>,
	Randy Dunlap <randy.dunlap@...cle.com>, wbrana@...il.com,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH][bugzilla #8679] therm_throt.c: Fix section mismatch


WARNING: arch/i386/kernel/built-in.o(.data+0x2148): Section mismatch: reference
to .init.text: (between 'thermal_throttle_cpu_notifier' and 'mtrr_mutex')

comes because struct notifier_block thermal_throttle_cpu_notifier in
arch/i386/kernel/cpu/mcheck/therm_throt.c goes in .data section but
the notifier callback function itself has been marked __cpuinit which
becomes __init == .init.text when HOTPLUG_CPU=n. The warning is bogus
because the callback will never be called out if HOTPLUG_CPU=n in the
first place (as one can see from kernel/cpu.c, the cpu_chain itself
is __cpuinitdata :-)

So, let's mark thermal_throttle_cpu_notifier as __cpuinitdata to fix
the section mismatch warning.

Signed-off-by: Satyam Sharma <satyam@...radead.org>

---

[The other section mismatch mentioned in bugzilla #8679 is already fixed.]

 arch/i386/kernel/cpu/mcheck/therm_throt.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/i386/kernel/cpu/mcheck/therm_throt.c b/arch/i386/kernel/cpu/mcheck/therm_throt.c
index 1203dc5..494d320 100644
--- a/arch/i386/kernel/cpu/mcheck/therm_throt.c
+++ b/arch/i386/kernel/cpu/mcheck/therm_throt.c
@@ -152,7 +152,7 @@ static __cpuinit int thermal_throttle_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block thermal_throttle_cpu_notifier =
+static struct notifier_block thermal_throttle_cpu_notifier __cpuinitdata =
 {
 	.notifier_call = thermal_throttle_cpu_callback,
 };
-
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