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| author | Mike Kravetz <kravetz@us.ibm.com> | 2006-05-15 09:44:13 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-05-15 11:20:56 -0700 |
| commit | 39d24e64263cd3211705d3b61ea4171c65030921 (patch) | |
| tree | b527b1395b070180b7f930c0a89530f11bce7b3c | |
| parent | 48564e628bd7662d7a0b3ac81c41cd0e4cc36dae (diff) | |
| download | linux-39d24e64263cd3211705d3b61ea4171c65030921.tar.gz linux-39d24e64263cd3211705d3b61ea4171c65030921.tar.bz2 linux-39d24e64263cd3211705d3b61ea4171c65030921.zip | |
[PATCH] add slab_is_available() routine for boot code
slab_is_available() indicates slab based allocators are available for use.
SPARSEMEM code needs to know this as it can be called at various times
during the boot process.
Signed-off-by: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | include/linux/slab.h | 1 | ||||
| -rw-r--r-- | mm/slab.c | 8 | ||||
| -rw-r--r-- | mm/sparse.c | 2 |
3 files changed, 10 insertions, 1 deletions
diff --git a/include/linux/slab.h b/include/linux/slab.h index 3af03b19c983..2d985d59c7b8 100644 --- a/include/linux/slab.h +++ b/include/linux/slab.h @@ -150,6 +150,7 @@ static inline void *kcalloc(size_t n, size_t size, gfp_t flags) extern void kfree(const void *); extern unsigned int ksize(const void *); +extern int slab_is_available(void); #ifdef CONFIG_NUMA extern void *kmem_cache_alloc_node(kmem_cache_t *, gfp_t flags, int node); diff --git a/mm/slab.c b/mm/slab.c index c32af7e7581e..b1d643b5238d 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -700,6 +700,14 @@ static enum { FULL } g_cpucache_up; +/* + * used by boot code to determine if it can use slab based allocator + */ +int slab_is_available(void) +{ + return g_cpucache_up == FULL; +} + static DEFINE_PER_CPU(struct work_struct, reap_work); static void free_block(struct kmem_cache *cachep, void **objpp, int len, diff --git a/mm/sparse.c b/mm/sparse.c index d7c32de99ee8..c5e89eb9ac8f 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -32,7 +32,7 @@ static struct mem_section *sparse_index_alloc(int nid) unsigned long array_size = SECTIONS_PER_ROOT * sizeof(struct mem_section); - if (system_state == SYSTEM_RUNNING) + if (slab_is_available()) section = kmalloc_node(array_size, GFP_KERNEL, nid); else section = alloc_bootmem_node(NODE_DATA(nid), array_size); |