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| author | Michal Marek | 2010-12-14 22:01:55 +0100 |
|---|---|---|
| committer | Michal Marek | 2010-12-14 22:01:55 +0100 |
| commit | 8990c1bc4be46473ad19bf2fa612ca57286f3df4 (patch) | |
| tree | 3cea60576903a1d26c67e6ec62891b524d390e95 /arch/arm/include/asm/smp_plat.h | |
| parent | headers_install: check exit status of unifdef (diff) | |
| parent | Linux 2.6.37-rc1 (diff) | |
| download | kernel-qcow2-linux-8990c1bc4be46473ad19bf2fa612ca57286f3df4.tar.gz kernel-qcow2-linux-8990c1bc4be46473ad19bf2fa612ca57286f3df4.tar.xz kernel-qcow2-linux-8990c1bc4be46473ad19bf2fa612ca57286f3df4.zip | |
Merge commit 'v2.6.37-rc1' into kbuild/kbuild
Diffstat (limited to 'arch/arm/include/asm/smp_plat.h')
| -rw-r--r-- | arch/arm/include/asm/smp_plat.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/include/asm/smp_plat.h b/arch/arm/include/asm/smp_plat.h index e6215305544a..f24c1b9e211d 100644 --- a/arch/arm/include/asm/smp_plat.h +++ b/arch/arm/include/asm/smp_plat.h @@ -7,15 +7,40 @@ #include <asm/cputype.h> +/* + * Return true if we are running on a SMP platform + */ +static inline bool is_smp(void) +{ +#ifndef CONFIG_SMP + return false; +#elif defined(CONFIG_SMP_ON_UP) + extern unsigned int smp_on_up; + return !!smp_on_up; +#else + return true; +#endif +} + /* all SMP configurations have the extended CPUID registers */ static inline int tlb_ops_need_broadcast(void) { + if (!is_smp()) + return 0; + return ((read_cpuid_ext(CPUID_EXT_MMFR3) >> 12) & 0xf) < 2; } +#if !defined(CONFIG_SMP) || __LINUX_ARM_ARCH__ >= 7 +#define cache_ops_need_broadcast() 0 +#else static inline int cache_ops_need_broadcast(void) { + if (!is_smp()) + return 0; + return ((read_cpuid_ext(CPUID_EXT_MMFR3) >> 12) & 0xf) < 1; } +#endif #endif |