diff options
Diffstat (limited to 'include/linux/cpumask.h')
| -rw-r--r-- | include/linux/cpumask.h | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index 80226e776143..2dbd9a287e77 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -62,6 +62,15 @@ * int next_cpu_nr(cpu, mask) Next cpu past 'cpu', or nr_cpu_ids * * cpumask_t cpumask_of_cpu(cpu) Return cpumask with bit 'cpu' set + *ifdef CONFIG_HAS_CPUMASK_OF_CPU + * cpumask_of_cpu_ptr_declare(v) Declares cpumask_t *v + * cpumask_of_cpu_ptr_next(v, cpu) Sets v = &cpumask_of_cpu_map[cpu] + * cpumask_of_cpu_ptr(v, cpu) Combines above two operations + *else + * cpumask_of_cpu_ptr_declare(v) Declares cpumask_t _v and *v = &_v + * cpumask_of_cpu_ptr_next(v, cpu) Sets _v = cpumask_of_cpu(cpu) + * cpumask_of_cpu_ptr(v, cpu) Combines above two operations + *endif * CPU_MASK_ALL Initializer - all bits set * CPU_MASK_NONE Initializer - no bits set * unsigned long *cpus_addr(mask) Array of unsigned long's in mask @@ -236,11 +245,16 @@ static inline void __cpus_shift_left(cpumask_t *dstp, #ifdef CONFIG_HAVE_CPUMASK_OF_CPU_MAP extern cpumask_t *cpumask_of_cpu_map; -#define cpumask_of_cpu(cpu) (cpumask_of_cpu_map[cpu]) - +#define cpumask_of_cpu(cpu) (cpumask_of_cpu_map[cpu]) +#define cpumask_of_cpu_ptr(v, cpu) \ + const cpumask_t *v = &cpumask_of_cpu(cpu) +#define cpumask_of_cpu_ptr_declare(v) \ + const cpumask_t *v +#define cpumask_of_cpu_ptr_next(v, cpu) \ + v = &cpumask_of_cpu(cpu) #else #define cpumask_of_cpu(cpu) \ -(*({ \ +({ \ typeof(_unused_cpumask_arg_) m; \ if (sizeof(m) == sizeof(unsigned long)) { \ m.bits[0] = 1UL<<(cpu); \ @@ -248,8 +262,16 @@ extern cpumask_t *cpumask_of_cpu_map; cpus_clear(m); \ cpu_set((cpu), m); \ } \ - &m; \ -})) + m; \ +}) +#define cpumask_of_cpu_ptr(v, cpu) \ + cpumask_t _##v = cpumask_of_cpu(cpu); \ + const cpumask_t *v = &_##v +#define cpumask_of_cpu_ptr_declare(v) \ + cpumask_t _##v; \ + const cpumask_t *v = &_##v +#define cpumask_of_cpu_ptr_next(v, cpu) \ + _##v = cpumask_of_cpu(cpu) #endif #define CPU_MASK_LAST_WORD BITMAP_LAST_WORD_MASK(NR_CPUS) |