Commit 0281b5dc authored by Yinghai Lu's avatar Yinghai Lu Committed by Rusty Russell
Browse files

cpumask: introduce zalloc_cpumask_var 



So can get cpumask_var with cpumask_clear

Signed-off-by: default avatarYinghai Lu <yinghai@kernel.org>
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent 3af968e0

include/linux/cpumask.h

+15 −0
Original line number Diff line number Diff line
@@ -1022,6 +1022,8 @@ typedef struct cpumask *cpumask_var_t; 


bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, int node);

bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags);

bool zalloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, int node);

bool zalloc_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);
@@ -1040,6 +1042,19 @@ static inline bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, 
	return true;

}



static inline bool zalloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)

{

	cpumask_clear(*mask);

	return true;

}



static inline bool zalloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags,

					  int node)

{

	cpumask_clear(*mask);

	return true;

}



static inline void alloc_bootmem_cpumask_var(cpumask_var_t *mask)

{

}

lib/cpumask.c

+12 −0
Original line number Diff line number Diff line
@@ -119,6 +119,12 @@ bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, int node) 
}

EXPORT_SYMBOL(alloc_cpumask_var_node);



bool zalloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, int node)

{

	return alloc_cpumask_var_node(mask, flags | __GFP_ZERO, node);

}

EXPORT_SYMBOL(zalloc_cpumask_var_node);



/**

 * alloc_cpumask_var - allocate a struct cpumask

 * @mask: pointer to cpumask_var_t where the cpumask is returned
@@ -135,6 +141,12 @@ bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags) 
}

EXPORT_SYMBOL(alloc_cpumask_var);



bool zalloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)

{

	return alloc_cpumask_var(mask, flags | __GFP_ZERO);

}

EXPORT_SYMBOL(zalloc_cpumask_var);



/**

 * alloc_bootmem_cpumask_var - allocate a struct cpumask from the bootmem arena.

 * @mask: pointer to cpumask_var_t where the cpumask is returned