The hotcpu_notifier is used to create notifiers to be called later.
It really looks like the functions that are registered are only
relevant in a HOTPLUG_CPU configuration and the correct fix was
to wrap them in an #ifdef / #endif or similar.
But for now just tell modpost to silence the warning by annotating
the static variable with __refdata.
This silences the following warnings in kernel/:
WARNING: o-x86_64/kernel/built-in.o(.data+0x960): Section mismatch in reference
from the variable profile_cpu_callback_nb.17240 to the function
.devinit.text:profile_cpu_callback()
WARNING: o-x86_64/kernel/built-in.o(.data+0x3fa0): Section mismatch in
reference from the variable workqueue_cpu_callback_nb.14663 to the function
.devinit.text:workqueue_cpu_callback()
WARNING: o-x86_64/kernel/built-in.o(.data+0xe280): Section mismatch in
reference from the variable relay_hotcpu_callback_nb.19247 to the function
.cpuinit.text:relay_hotcpu_callback()
Additional warnings are silenced with this change but
they are left put.
This patch is just a workaround for the bad practice
to use __cpuinit to annotate code solely used for
HOTPLUG_CPU.
Signed-off-by: Sam Ravnborg <[EMAIL PROTECTED]>
Cc: Gautham R Shenoy <[EMAIL PROTECTED]>
---
include/linux/cpu.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/linux/cpu.h b/include/linux/cpu.h
index 0be8d65..cebb8c0 100644
--- a/include/linux/cpu.h
+++ b/include/linux/cpu.h
@@ -109,7 +109,7 @@ static inline void cpuhotplug_mutex_unlock(struct mutex
*cpu_hp_mutex)
extern void get_online_cpus(void);
extern void put_online_cpus(void);
#define hotcpu_notifier(fn, pri) { \
- static struct notifier_block fn##_nb = \
+ static struct notifier_block fn##_nb __refdata = \
{ .notifier_call = fn, .priority = pri }; \
register_cpu_notifier(&fn##_nb); \
}
--
1.5.4.rc3.14.g44397
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