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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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7e85ee0c1d
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>
43 lines
996 B
C
43 lines
996 B
C
#ifndef __LINUX_SLOB_DEF_H
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#define __LINUX_SLOB_DEF_H
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void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node);
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static __always_inline void *kmem_cache_alloc(struct kmem_cache *cachep,
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gfp_t flags)
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{
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return kmem_cache_alloc_node(cachep, flags, -1);
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}
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void *__kmalloc_node(size_t size, gfp_t flags, int node);
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static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
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{
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return __kmalloc_node(size, flags, node);
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}
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/**
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* kmalloc - allocate memory
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* @size: how many bytes of memory are required.
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* @flags: the type of memory to allocate (see kcalloc).
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*
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* kmalloc is the normal method of allocating memory
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* in the kernel.
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*/
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static __always_inline void *kmalloc(size_t size, gfp_t flags)
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{
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return __kmalloc_node(size, flags, -1);
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}
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static __always_inline void *__kmalloc(size_t size, gfp_t flags)
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{
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return kmalloc(size, flags);
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}
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static inline void kmem_cache_init_late(void)
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{
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/* Nothing to do */
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}
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#endif /* __LINUX_SLOB_DEF_H */
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