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author | Sam Ravnborg <sam@ravnborg.org> | 2008-02-01 17:49:42 +0100 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-02-01 17:49:42 +0100 |
commit | c72258c7c9de448d5ea826ec6b4737eccbaa6718 (patch) | |
tree | 718d9a53c535e92ccd59f9f50d33a2421d9d5953 | |
parent | 69e97c028b25ef10018d513ead6e7caad276e19f (diff) | |
download | op-kernel-dev-c72258c7c9de448d5ea826ec6b4737eccbaa6718.zip op-kernel-dev-c72258c7c9de448d5ea826ec6b4737eccbaa6718.tar.gz |
x86: fix section mismatch warnings when referencing notifiers
Fix the following warnings:
WARNING: arch/x86/kernel/built-in.o(.exit.text+0xf8): Section mismatch in reference from the function msr_exit() to the variable .cpuinit.data:msr_class_cpu_notifier
WARNING: arch/x86/kernel/built-in.o(.exit.text+0x158): Section mismatch in reference from the function cpuid_exit() to the variable .cpuinit.data:cpuid_class_cpu_notifier
WARNING: arch/x86/kernel/built-in.o(.exit.text+0x171): Section mismatch in reference from the function microcode_exit() to the variable .cpuinit.data:mc_cpu_notifier
In all three cases there were a function annotated __exit
that referenced a variable annotated __cpuinitdata.
The fix was to replace the annotation of the notifier
with __refdata to tell modpost that the reference to
a _cpuinit function in the notifier are OK.
The unregister call that references the notifier
variable will simple delete the function pointer
so there is no problem ignoring the reference.
Note: This looks like another case where __cpuinit
has been used as replacement for proper use
of CONFIG_HOTPLUG_CPU to decide what code are used for
HOTPLUG_CPU.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r-- | arch/x86/kernel/cpuid.c | 2 | ||||
-rw-r--r-- | arch/x86/kernel/microcode.c | 2 | ||||
-rw-r--r-- | arch/x86/kernel/msr.c | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c index dec66e4..a63432d 100644 --- a/arch/x86/kernel/cpuid.c +++ b/arch/x86/kernel/cpuid.c @@ -170,7 +170,7 @@ static int __cpuinit cpuid_class_cpu_callback(struct notifier_block *nfb, return err ? NOTIFY_BAD : NOTIFY_OK; } -static struct notifier_block __cpuinitdata cpuid_class_cpu_notifier = +static struct notifier_block __refdata cpuid_class_cpu_notifier = { .notifier_call = cpuid_class_cpu_callback, }; diff --git a/arch/x86/kernel/microcode.c b/arch/x86/kernel/microcode.c index 6ff447f..f2702d0 100644 --- a/arch/x86/kernel/microcode.c +++ b/arch/x86/kernel/microcode.c @@ -797,7 +797,7 @@ mc_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu) return NOTIFY_OK; } -static struct notifier_block __cpuinitdata mc_cpu_notifier = { +static struct notifier_block __refdata mc_cpu_notifier = { .notifier_call = mc_cpu_callback, }; diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c index 21f6e3c..bd82850 100644 --- a/arch/x86/kernel/msr.c +++ b/arch/x86/kernel/msr.c @@ -168,7 +168,7 @@ static int __cpuinit msr_class_cpu_callback(struct notifier_block *nfb, return err ? NOTIFY_BAD : NOTIFY_OK; } -static struct notifier_block __cpuinitdata msr_class_cpu_notifier = { +static struct notifier_block __refdata msr_class_cpu_notifier = { .notifier_call = msr_class_cpu_callback, }; |