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| author | Deepthi Dharwar <deepthi@linux.vnet.ibm.com> | 2011-11-30 03:46:42 +0100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-12-08 03:56:31 +0100 |
| commit | 707827f3387d9b260d50fa697885a4042cea3bf4 (patch) | |
| tree | ad6b616d17cab85bf39fd42405dd2ae84123811c /arch/powerpc/include/asm | |
| parent | powerpc/cpuidle: Add cpu_idle_wait() to allow switching of idle routines (diff) | |
| download | linux-707827f3387d9b260d50fa697885a4042cea3bf4.tar.xz linux-707827f3387d9b260d50fa697885a4042cea3bf4.zip | |
powerpc/cpuidle: cpuidle driver for pSeries
This patch implements a back-end cpuidle driver for pSeries
based on pseries_dedicated_idle_loop and pseries_shared_idle_loop
routines. The driver is built only if CONFIG_CPU_IDLE is set. This
cpuidle driver uses global registration of idle states and
not per-cpu.
Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Trinabh Gupta <g.trinabh@gmail.com>
Signed-off-by: Arun R Bharadwaj <arun.r.bharadwaj@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/system.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/system.h b/arch/powerpc/include/asm/system.h index ff6668038799..f56a0a75d989 100644 --- a/arch/powerpc/include/asm/system.h +++ b/arch/powerpc/include/asm/system.h @@ -223,6 +223,14 @@ extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask); extern int powersave_nap; /* set if nap mode can be used in idle loop */ void cpu_idle_wait(void); +#ifdef CONFIG_PSERIES_IDLE +extern void update_smt_snooze_delay(int snooze); +extern int pseries_notify_cpuidle_add_cpu(int cpu); +#else +static inline void update_smt_snooze_delay(int snooze) {} +static inline int pseries_notify_cpuidle_add_cpu(int cpu) { return 0; } +#endif + /* * Atomic exchange * |