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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/arm/include/asm/smp_plat.h | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/arm/include/asm/smp_plat.h')
-rw-r--r-- | arch/arm/include/asm/smp_plat.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/arm/include/asm/smp_plat.h b/arch/arm/include/asm/smp_plat.h new file mode 100644 index 00000000..558d6c80 --- /dev/null +++ b/arch/arm/include/asm/smp_plat.h @@ -0,0 +1,52 @@ +/* + * ARM specific SMP header, this contains our implementation + * details. + */ +#ifndef __ASMARM_SMP_PLAT_H +#define __ASMARM_SMP_PLAT_H + +#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 + +/* + * Logical CPU mapping. + */ +extern int __cpu_logical_map[]; +#define cpu_logical_map(cpu) __cpu_logical_map[cpu] + +#endif |