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| author | Satyam Sharma <satyam@infradead.org> | 2007-10-02 13:28:15 -0700 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2007-10-04 18:40:57 -0400 |
| commit | 6070b5de50ab5e3f810628a9cbb04deecf30a85f (patch) | |
| tree | 008d9a6df181b99a46bda05d0194c2dde0c88ded /include/linux/cpufreq.h | |
| parent | dd184a01b8ece6bac2f7a63de99a4a4d29552746 (diff) | |
| download | lwn-6070b5de50ab5e3f810628a9cbb04deecf30a85f.tar.gz lwn-6070b5de50ab5e3f810628a9cbb04deecf30a85f.zip | |
[CPUFREQ] implement !CONFIG_CPU_FREQ stub for cpufreq_unregister_notifier()
Callsites such as arch/powerpc/oprofile/op_model_cell.c are having to
open-code #ifdef CONFIG_CPU_FREQ only to be able to get at the full definition
of cpufreq_unregister_notifier(), because no empty stub is available for the
!CONFIG_CPU_FREQ case. Let's provide one, to be able to remove such #ifdef's
from the rest of the kernel tree -- those will come in a subsequent patch.
Signed-off-by: Satyam Sharma <satyam@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'include/linux/cpufreq.h')
| -rw-r--r-- | include/linux/cpufreq.h | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 450a841b5892..23932d7741a9 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -32,12 +32,24 @@ * CPUFREQ NOTIFIER INTERFACE * *********************************************************************/ -int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list); -int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list); - #define CPUFREQ_TRANSITION_NOTIFIER (0) #define CPUFREQ_POLICY_NOTIFIER (1) +#ifdef CONFIG_CPU_FREQ +int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list); +int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list); +#else /* CONFIG_CPU_FREQ */ +static inline int cpufreq_register_notifier(struct notifier_block *nb, + unsigned int list) +{ + return 0; +} +static inline int cpufreq_unregister_notifier(struct notifier_block *nb, + unsigned int list) +{ + return 0; +} +#endif /* CONFIG_CPU_FREQ */ /* if (cpufreq_driver->target) exists, the ->governor decides what frequency * within the limits is used. If (cpufreq_driver->setpolicy> exists, these |