diff options
Diffstat (limited to 'include/linux/cpumask.h')
| -rw-r--r-- | include/linux/cpumask.h | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index 4f7a6323747..032560295fc 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -9,6 +9,7 @@ #include <linux/kernel.h> #include <linux/threads.h> #include <linux/bitmap.h> +#include <linux/bug.h> typedef struct cpumask { DECLARE_BITMAP(bits, NR_CPUS); } cpumask_t; @@ -271,6 +272,8 @@ static inline void cpumask_clear_cpu(int cpu, struct cpumask *dstp) * @cpu: cpu number (< nr_cpu_ids) * @cpumask: the cpumask pointer * + * Returns 1 if @cpu is set in @cpumask, else returns 0 + * * No static inline type checking - see Subtlety (1) above. */ #define cpumask_test_cpu(cpu, cpumask) \ @@ -281,6 +284,8 @@ static inline void cpumask_clear_cpu(int cpu, struct cpumask *dstp) * @cpu: cpu number (< nr_cpu_ids) * @cpumask: the cpumask pointer * + * Returns 1 if @cpu is set in old bitmap of @cpumask, else returns 0 + * * test_and_set_bit wrapper for cpumasks. */ static inline int cpumask_test_and_set_cpu(int cpu, struct cpumask *cpumask) @@ -293,6 +298,8 @@ static inline int cpumask_test_and_set_cpu(int cpu, struct cpumask *cpumask) * @cpu: cpu number (< nr_cpu_ids) * @cpumask: the cpumask pointer * + * Returns 1 if @cpu is set in old bitmap of @cpumask, else returns 0 + * * test_and_clear_bit wrapper for cpumasks. */ static inline int cpumask_test_and_clear_cpu(int cpu, struct cpumask *cpumask) @@ -323,6 +330,8 @@ static inline void cpumask_clear(struct cpumask *dstp) * @dstp: the cpumask result * @src1p: the first input * @src2p: the second input + * + * If *@dstp is empty, returns 0, else returns 1 */ static inline int cpumask_and(struct cpumask *dstp, const struct cpumask *src1p, @@ -364,6 +373,8 @@ static inline void cpumask_xor(struct cpumask *dstp, * @dstp: the cpumask result * @src1p: the first input * @src2p: the second input + * + * If *@dstp is empty, returns 0, else returns 1 */ static inline int cpumask_andnot(struct cpumask *dstp, const struct cpumask *src1p, @@ -413,6 +424,8 @@ static inline bool cpumask_intersects(const struct cpumask *src1p, * cpumask_subset - (*src1p & ~*src2p) == 0 * @src1p: the first input * @src2p: the second input + * + * Returns 1 if *@src1p is a subset of *@src2p, else returns 0 */ static inline int cpumask_subset(const struct cpumask *src1p, const struct cpumask *src2p) @@ -578,9 +591,8 @@ static inline int cpulist_scnprintf(char *buf, int len, } /** - * cpulist_parse_user - extract a cpumask from a user string of ranges + * cpulist_parse - extract a cpumask from a user string of ranges * @buf: the buffer to extract from - * @len: the length of the buffer * @dstp: the cpumask to set. * * Returns -errno, or 0 for success. @@ -763,12 +775,6 @@ static inline const struct cpumask *get_cpu_mask(unsigned int cpu) * */ #ifndef CONFIG_DISABLE_OBSOLETE_CPUMASK_FUNCTIONS -/* These strip const, as traditionally they weren't const. */ -#define cpu_possible_map (*(cpumask_t *)cpu_possible_mask) -#define cpu_online_map (*(cpumask_t *)cpu_online_mask) -#define cpu_present_map (*(cpumask_t *)cpu_present_mask) -#define cpu_active_map (*(cpumask_t *)cpu_active_mask) - #define cpumask_of_cpu(cpu) (*get_cpu_mask(cpu)) #define CPU_MASK_LAST_WORD BITMAP_LAST_WORD_MASK(NR_CPUS) @@ -809,11 +815,10 @@ static inline const struct cpumask *get_cpu_mask(unsigned int cpu) #else /* NR_CPUS > 1 */ int __first_cpu(const cpumask_t *srcp); int __next_cpu(int n, const cpumask_t *srcp); -int __any_online_cpu(const cpumask_t *mask); #define first_cpu(src) __first_cpu(&(src)) #define next_cpu(n, src) __next_cpu((n), &(src)) -#define any_online_cpu(mask) __any_online_cpu(&(mask)) +#define any_online_cpu(mask) cpumask_any_and(&mask, cpu_online_mask) #define for_each_cpu_mask(cpu, mask) \ for ((cpu) = -1; \ (cpu) = next_cpu((cpu), (mask)), \ |