Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:mm\slab.h Create Date:2022-07-28 14:04:20
Last Modify:2022-05-23 16:25:42 Copyright©Brick
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Name:slab_pre_alloc_hook

Proto:static inline struct kmem_cache *slab_pre_alloc_hook(struct kmem_cache *s, gfp_t flags)

Type:struct kmem_cache

Parameter:

TypeParameterName
struct kmem_cache *s
gfp_tflags
560  flags &= gfp_allowed_mask is set to GFP_BOOT_MASK during early boot to restrict what* GFP flags are used before interrupts are enabled
562  fs_reclaim_acquire(flags)
563  fs_reclaim_release(flags)
565  might_sleep_if(gfpflags_allow_blocking(flags))
567  If should_failslab(s, flags) Then Return NULL
570  If memcg_kmem_enabled() && ( flags & __GFP_ACCOUNT || Used for retrieving partial slabs, etc. & SLAB_ACCOUNT ) Then Return memcg_kmem_get_cache(s)
574  Return s
Caller
NameDescribe
slab_alloc_node
slab_alloc
kmem_cache_alloc_bulk
slab_alloc_nodeInlined fastpath so that allocation functions (kmalloc, kmem_cache_alloc)* have the fastpath folded into their functions. So no function call* overhead for requests that can be satisfied on the fastpath.
kmem_cache_alloc_bulkNote that interrupts must be enabled when calling this function.