diff options
| author | Satyam Sharma <satyam@infradead.org> | 2007-10-18 03:06:38 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-18 14:37:28 -0700 |
| commit | 761bb431908e84d1793c5eb6c2ae2cc4926bed3e (patch) | |
| tree | 6b9afbc8b7156573da0d095390e4dbb3b16fd82c /include/linux/cpu.h | |
| parent | 4603ac180a824197c2262747948d0179eb076e9c (diff) | |
Redefine {un}register_hotcpu_notifier() !HOTPLUG_CPU stubs
The return of the present "do {} while" based stub definition of
register_hotcpu_notifier() cannot be checked. This makes the stub
asymmetric w.r.t. the real HOTPLUG_CPU=y implementation that is
int-returning. So let us redefine this to be consistent with the full
version. Also do the same for unregister_hotcpu_notifier().
We cannot define these as static inline functions due to an existing GCC
bug (#33172). So define as macros that return appropriately instead (int
'0' for the register_hotcpu_notifier case and void for
unregister_hotcpu_notifier).
Signed-off-by: Satyam Sharma <satyam@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/cpu.h')
| -rw-r--r-- | include/linux/cpu.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h index 0ad72c4cf312..b79c57569367 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -119,8 +119,9 @@ static inline void cpuhotplug_mutex_unlock(struct mutex *cpu_hp_mutex) #define lock_cpu_hotplug() do { } while (0) #define unlock_cpu_hotplug() do { } while (0) #define hotcpu_notifier(fn, pri) do { (void)(fn); } while (0) -#define register_hotcpu_notifier(nb) do { (void)(nb); } while (0) -#define unregister_hotcpu_notifier(nb) do { (void)(nb); } while (0) +/* These aren't inline functions due to a GCC bug. */ +#define register_hotcpu_notifier(nb) ({ (void)(nb); 0; }) +#define unregister_hotcpu_notifier(nb) ({ (void)(nb); }) /* CPUs don't go offline once they're online w/o CONFIG_HOTPLUG_CPU */ static inline int cpu_is_offline(int cpu) { return 0; } |