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| author | Arnd Bergmann <arnd@arndb.de> | 2012-08-15 20:51:54 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-08-23 17:16:42 +0200 |
| commit | c7a9b09b1a4a1fbccb2ec409daec95f9068d77c0 (patch) | |
| tree | f767b4391b4a20046a5649e5efae80428506453f /include | |
| parent | d9875690d9b89a866022ff49e3fcea892345ad92 (diff) | |
| download | linux-stable-c7a9b09b1a4a1fbccb2ec409daec95f9068d77c0.tar.gz linux-stable-c7a9b09b1a4a1fbccb2ec409daec95f9068d77c0.tar.bz2 linux-stable-c7a9b09b1a4a1fbccb2ec409daec95f9068d77c0.zip | |
ARM: omap: allow building omap44xx without SMP
The new omap4 cpuidle implementation currently requires
ARCH_NEEDS_CPU_IDLE_COUPLED, which only works on SMP.
This patch makes it possible to build a non-SMP kernel
for that platform. This is not normally desired for
end-users but can be useful for testing.
Without this patch, building rand-0y2jSKT results in:
drivers/cpuidle/coupled.c: In function 'cpuidle_coupled_poke':
drivers/cpuidle/coupled.c:317:3: error: implicit declaration of function '__smp_call_function_single' [-Werror=implicit-function-declaration]
It's not clear if this patch is the best solution for
the problem at hand. I have made sure that we can now
build the kernel in all configurations, but that does
not mean it will actually work on an OMAP44xx.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpuidle.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 040b13b5c14a..279b1eaa8b73 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -194,6 +194,10 @@ static inline int cpuidle_play_dead(void) {return -ENODEV; } #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED void cpuidle_coupled_parallel_barrier(struct cpuidle_device *dev, atomic_t *a); +#else +static inline void cpuidle_coupled_parallel_barrier(struct cpuidle_device *dev, atomic_t *a) +{ +} #endif /****************************** |