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authorArnd Bergmann <arnd@arndb.de>2012-08-16 00:51:54 +0400
committerArnd Bergmann <arnd@arndb.de>2012-08-23 19:16:42 +0400
commitc7a9b09b1a4a1fbccb2ec409daec95f9068d77c0 (patch)
treef767b4391b4a20046a5649e5efae80428506453f /include/linux/cpuidle.h
parentd9875690d9b89a866022ff49e3fcea892345ad92 (diff)
downloadlinux-c7a9b09b1a4a1fbccb2ec409daec95f9068d77c0.tar.xz
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/linux/cpuidle.h')
-rw-r--r--include/linux/cpuidle.h4
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
/******************************