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authorDeepthi Dharwar <deepthi@linux.vnet.ibm.com>2011-11-30 02:46:31 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-12-08 13:54:58 +1100
commit771dae81896855d25f7f8746aaf56c0238deafb6 (patch)
treeb1ddfa238260332dab446a5fa21db1f7ed0fb41b /arch/powerpc/include
parentfaa8bf8878636e40646d307e0516dbadb3b65b4f (diff)
downloadop-kernel-dev-771dae81896855d25f7f8746aaf56c0238deafb6.zip
op-kernel-dev-771dae81896855d25f7f8746aaf56c0238deafb6.tar.gz
powerpc/cpuidle: Add cpu_idle_wait() to allow switching of idle routines
This patch provides cpu_idle_wait() routine for the powerpc platform which is required by the cpuidle subsystem. This routine is required to change the idle handler on SMP systems. The equivalent routine for x86 is in arch/x86/kernel/process.c but the powerpc implementation is different. cpuidle_disable variable is to enable/disable cpuidle framework if power_save option is set during the boot time. 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')
-rw-r--r--arch/powerpc/include/asm/processor.h2
-rw-r--r--arch/powerpc/include/asm/system.h1
2 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index eb11a44..811b7e7 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -382,6 +382,8 @@ static inline unsigned long get_clean_sp(struct pt_regs *regs, int is_32)
}
#endif
+enum idle_boot_override {IDLE_NO_OVERRIDE = 0, IDLE_POWERSAVE_OFF};
+
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
#endif /* _ASM_POWERPC_PROCESSOR_H */
diff --git a/arch/powerpc/include/asm/system.h b/arch/powerpc/include/asm/system.h
index e30a13d..ff66680 100644
--- a/arch/powerpc/include/asm/system.h
+++ b/arch/powerpc/include/asm/system.h
@@ -221,6 +221,7 @@ extern unsigned long klimit;
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);
/*
* Atomic exchange
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