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Commit cd83e42c authored by Rusty Russell's avatar Rusty Russell Committed by Ingo Molnar
Browse files

cpumask: new API, v2 



- add cpumask_of()
- add free_bootmem_cpumask_var()

Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 2d3854a3

include/linux/cpumask.h

+11 −0
Original line number Diff line number Diff line
@@ -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. */

lib/cpumask.c

+5 −0
Original line number Diff line number Diff line
@@ -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