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cpumask: Add alloc_cpumask_var_node() 

Impact: New API

This will be needed in x86 code to allocate the domain and old_domain
cpumasks on the same node as where the containing irq_cfg struct is
allocated.

(Also fixes double-dump_stack on rare CONFIG_DEBUG_PER_CPU_MAPS case)

Signed-off-by: Mike Travis <travis@sgi.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (re-impl alloc_cpumask_var)
This commit is contained in:
Mike Travis 2008-12-19 16:56:37 +10:30 committed by Rusty Russell
parent 7be7585393
commit 7b4967c532
2 changed files with 15 additions and 3 deletions
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7
include/linux/cpumask.h
View File

@ -1025,6 +1025,7 @@ static inline size_t cpumask_size(void)
#ifdef CONFIG_CPUMASK_OFFSTACK
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);
void alloc_bootmem_cpumask_var(cpumask_var_t *mask);
void free_cpumask_var(cpumask_var_t mask);
@ -1038,6 +1039,12 @@ static inline bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)
return true;
}
static inline bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags,
int node)
{
return true;
}
static inline void alloc_bootmem_cpumask_var(cpumask_var_t *mask)
{
}

11
lib/cpumask.c
View File

@ -76,15 +76,14 @@ int cpumask_any_but(const struct cpumask *mask, unsigned int cpu)
/* These are not inline because of header tangles. */
#ifdef CONFIG_CPUMASK_OFFSTACK
bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)
bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, int node)
{
if (likely(slab_is_available()))
*mask = kmalloc(cpumask_size(), flags);
*mask = kmalloc_node(cpumask_size(), flags, node);
else {
#ifdef CONFIG_DEBUG_PER_CPU_MAPS
printk(KERN_ERR
"=> alloc_cpumask_var: kmalloc not available!\n");
dump_stack();
#endif
*mask = NULL;
}
@ -96,6 +95,12 @@ bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)
#endif
return *mask != NULL;
}
EXPORT_SYMBOL(alloc_cpumask_var_node);
bool alloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)
{
return alloc_cpumask_var_node(mask, flags, numa_node_id());
}
EXPORT_SYMBOL(alloc_cpumask_var);
void __init alloc_bootmem_cpumask_var(cpumask_var_t *mask)