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cpumask: new API, v2

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- add cpumask_of()
- add free_bootmem_cpumask_var()

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Rusty Russell 2008-11-07 11:12:29 +11:00 committed by Ingo Molnar
parent 2d3854a37e
commit cd83e42c6b
2 changed files with 16 additions and 0 deletions
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11
include/linux/cpumask.h
View File

@ -893,6 +893,12 @@ static inline void cpumask_copy(struct cpumask *dstp,
*/
#define cpumask_any_and(mask1, mask2) cpumask_first_and((mask1), (mask2))
/**
* cpumask_of - the cpumask containing just a given cpu
* @cpu: the cpu (<= nr_cpu_ids)
*/
#define cpumask_of(cpu) (get_cpu_mask(cpu))
/**
* to_cpumask - convert an NR_CPUS bitmap to a struct cpumask *
* @bitmap: the bitmap
@ -946,6 +952,7 @@ typedef struct cpumask *cpumask_var_t;
bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags);
void alloc_bootmem_cpumask_var(cpumask_var_t *mask);
void free_cpumask_var(cpumask_var_t mask);
void free_bootmem_cpumask_var(cpumask_var_t mask);
#else
typedef struct cpumask cpumask_var_t[1];
@ -962,6 +969,10 @@ static inline void alloc_bootmem_cpumask_var(cpumask_var_t *mask)
static inline void free_cpumask_var(cpumask_var_t mask)
{
}
static inline void free_bootmem_cpumask_var(cpumask_var_t mask)
{
}
#endif /* CONFIG_CPUMASK_OFFSTACK */
/* The pointer versions of the maps, these will become the primary versions. */

5
lib/cpumask.c
View File

@ -107,4 +107,9 @@ void free_cpumask_var(cpumask_var_t mask)
kfree(mask);
}
EXPORT_SYMBOL(free_cpumask_var);
void free_bootmem_cpumask_var(cpumask_var_t mask)
{
free_bootmem((unsigned long)mask, cpumask_size());
}
#endif