kernel-ark/include/linux/slob_def.h
Pekka Enberg 7e85ee0c1d slab,slub: don't enable interrupts during early boot
As explained by Benjamin Herrenschmidt:

  Oh and btw, your patch alone doesn't fix powerpc, because it's missing
  a whole bunch of GFP_KERNEL's in the arch code... You would have to
  grep the entire kernel for things that check slab_is_available() and
  even then you'll be missing some.

  For example, slab_is_available() didn't always exist, and so in the
  early days on powerpc, we used a mem_init_done global that is set form
  mem_init() (not perfect but works in practice). And we still have code
  using that to do the test.

Therefore, mask out __GFP_WAIT, __GFP_IO, and __GFP_FS in the slab allocators
in early boot code to avoid enabling interrupts.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
2009-06-12 18:53:33 +03:00

43 lines
996 B
C

#ifndef __LINUX_SLOB_DEF_H
#define __LINUX_SLOB_DEF_H
void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node);
static __always_inline void *kmem_cache_alloc(struct kmem_cache *cachep,
gfp_t flags)
{
return kmem_cache_alloc_node(cachep, flags, -1);
}
void *__kmalloc_node(size_t size, gfp_t flags, int node);
static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
{
return __kmalloc_node(size, flags, node);
}
/**
* kmalloc - allocate memory
* @size: how many bytes of memory are required.
* @flags: the type of memory to allocate (see kcalloc).
*
* kmalloc is the normal method of allocating memory
* in the kernel.
*/
static __always_inline void *kmalloc(size_t size, gfp_t flags)
{
return __kmalloc_node(size, flags, -1);
}
static __always_inline void *__kmalloc(size_t size, gfp_t flags)
{
return kmalloc(size, flags);
}
static inline void kmem_cache_init_late(void)
{
/* Nothing to do */
}
#endif /* __LINUX_SLOB_DEF_H */