diff options
Diffstat (limited to 'include/linux/cacheinfo.h')
| -rw-r--r-- | include/linux/cacheinfo.h | 35 |
1 files changed, 28 insertions, 7 deletions
diff --git a/include/linux/cacheinfo.h b/include/linux/cacheinfo.h index 2cb15fe4fe12..c8f4f0a0b874 100644 --- a/include/linux/cacheinfo.h +++ b/include/linux/cacheinfo.h @@ -3,7 +3,8 @@ #define _LINUX_CACHEINFO_H #include <linux/bitops.h> -#include <linux/cpumask.h> +#include <linux/cpuhplock.h> +#include <linux/cpumask_types.h> #include <linux/smp.h> struct device_node; @@ -113,26 +114,40 @@ int acpi_get_cache_info(unsigned int cpu, const struct attribute_group *cache_get_priv_group(struct cacheinfo *this_leaf); /* - * Get the id of the cache associated with @cpu at level @level. + * Get the cacheinfo structure for the cache associated with @cpu at + * level @level. * cpuhp lock must be held. */ -static inline int get_cpu_cacheinfo_id(int cpu, int level) +static inline struct cacheinfo *get_cpu_cacheinfo_level(int cpu, int level) { struct cpu_cacheinfo *ci = get_cpu_cacheinfo(cpu); int i; + lockdep_assert_cpus_held(); + for (i = 0; i < ci->num_leaves; i++) { if (ci->info_list[i].level == level) { if (ci->info_list[i].attributes & CACHE_ID) - return ci->info_list[i].id; - return -1; + return &ci->info_list[i]; + return NULL; } } - return -1; + return NULL; } -#ifdef CONFIG_ARM64 +/* + * Get the id of the cache associated with @cpu at level @level. + * cpuhp lock must be held. + */ +static inline int get_cpu_cacheinfo_id(int cpu, int level) +{ + struct cacheinfo *ci = get_cpu_cacheinfo_level(cpu, level); + + return ci ? ci->id : -1; +} + +#if defined(CONFIG_ARM64) || defined(CONFIG_ARM) #define use_arch_cache_info() (true) #else #define use_arch_cache_info() (false) @@ -140,8 +155,14 @@ static inline int get_cpu_cacheinfo_id(int cpu, int level) #ifndef CONFIG_ARCH_HAS_CPU_CACHE_ALIASING #define cpu_dcache_is_aliasing() false +#define cpu_icache_is_aliasing() cpu_dcache_is_aliasing() #else #include <asm/cachetype.h> + +#ifndef cpu_icache_is_aliasing +#define cpu_icache_is_aliasing() cpu_dcache_is_aliasing() +#endif + #endif #endif /* _LINUX_CACHEINFO_H */ |