mm/slab: move kmalloc() functions from slab_common.c to slub.c

This will eliminate a call between compilation units through
__kmem_cache_alloc_node() and allow better inlining of the allocation
fast path.

Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: David Rientjes <rientjes@google.com>
Tested-by: David Rientjes <rientjes@google.com>
Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>

1 files changed, 0 insertions, 119 deletions

diff --git a/mm/slab_common.c b/mm/slab_common.c
index 31ade17a7ad9..238293b1dbe1 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -936,50 +936,6 @@ void __init create_kmalloc_caches(slab_flags_t flags)
 	slab_state = UP;
 }
 
-static void *__kmalloc_large_node(size_t size, gfp_t flags, int node);
-static __always_inline
-void *__do_kmalloc_node(size_t size, gfp_t flags, int node, unsigned long caller)
-{
-	struct kmem_cache *s;
-	void *ret;
-
-	if (unlikely(size > KMALLOC_MAX_CACHE_SIZE)) {
-		ret = __kmalloc_large_node(size, flags, node);
-		trace_kmalloc(caller, ret, size,
-			      PAGE_SIZE << get_order(size), flags, node);
-		return ret;
-	}
-
-	if (unlikely(!size))
-		return ZERO_SIZE_PTR;
-
-	s = kmalloc_slab(size, flags, caller);
-
-	ret = __kmem_cache_alloc_node(s, flags, node, size, caller);
-	ret = kasan_kmalloc(s, ret, size, flags);
-	trace_kmalloc(caller, ret, size, s->size, flags, node);
-	return ret;
-}
-
-void *__kmalloc_node(size_t size, gfp_t flags, int node)
-{
-	return __do_kmalloc_node(size, flags, node, _RET_IP_);
-}
-EXPORT_SYMBOL(__kmalloc_node);
-
-void *__kmalloc(size_t size, gfp_t flags)
-{
-	return __do_kmalloc_node(size, flags, NUMA_NO_NODE, _RET_IP_);
-}
-EXPORT_SYMBOL(__kmalloc);
-
-void *__kmalloc_node_track_caller(size_t size, gfp_t flags,
-				  int node, unsigned long caller)
-{
-	return __do_kmalloc_node(size, flags, node, caller);
-}
-EXPORT_SYMBOL(__kmalloc_node_track_caller);
-
 /**
  * __ksize -- Report full size of underlying allocation
  * @object: pointer to the object
@@ -1016,30 +972,6 @@ size_t __ksize(const void *object)
 	return slab_ksize(folio_slab(folio)->slab_cache);
 }
 
-void *kmalloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size)
-{
-	void *ret = __kmem_cache_alloc_node(s, gfpflags, NUMA_NO_NODE,
-					    size, _RET_IP_);
-
-	trace_kmalloc(_RET_IP_, ret, size, s->size, gfpflags, NUMA_NO_NODE);
-
-	ret = kasan_kmalloc(s, ret, size, gfpflags);
-	return ret;
-}
-EXPORT_SYMBOL(kmalloc_trace);
-
-void *kmalloc_node_trace(struct kmem_cache *s, gfp_t gfpflags,
-			 int node, size_t size)
-{
-	void *ret = __kmem_cache_alloc_node(s, gfpflags, node, size, _RET_IP_);
-
-	trace_kmalloc(_RET_IP_, ret, size, s->size, gfpflags, node);
-
-	ret = kasan_kmalloc(s, ret, size, gfpflags);
-	return ret;
-}
-EXPORT_SYMBOL(kmalloc_node_trace);
-
 gfp_t kmalloc_fix_flags(gfp_t flags)
 {
 	gfp_t invalid_mask = flags & GFP_SLAB_BUG_MASK;
@@ -1052,57 +984,6 @@ gfp_t kmalloc_fix_flags(gfp_t flags)
 	return flags;
 }
 
-/*
- * To avoid unnecessary overhead, we pass through large allocation requests
- * directly to the page allocator. We use __GFP_COMP, because we will need to
- * know the allocation order to free the pages properly in kfree.
- */
-
-static void *__kmalloc_large_node(size_t size, gfp_t flags, int node)
-{
-	struct page *page;
-	void *ptr = NULL;
-	unsigned int order = get_order(size);
-
-	if (unlikely(flags & GFP_SLAB_BUG_MASK))
-		flags = kmalloc_fix_flags(flags);
-
-	flags |= __GFP_COMP;
-	page = alloc_pages_node(node, flags, order);
-	if (page) {
-		ptr = page_address(page);
-		mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE_B,
-				      PAGE_SIZE << order);
-	}
-
-	ptr = kasan_kmalloc_large(ptr, size, flags);
-	/* As ptr might get tagged, call kmemleak hook after KASAN. */
-	kmemleak_alloc(ptr, size, 1, flags);
-	kmsan_kmalloc_large(ptr, size, flags);
-
-	return ptr;
-}
-
-void *kmalloc_large(size_t size, gfp_t flags)
-{
-	void *ret = __kmalloc_large_node(size, flags, NUMA_NO_NODE);
-
-	trace_kmalloc(_RET_IP_, ret, size, PAGE_SIZE << get_order(size),
-		      flags, NUMA_NO_NODE);
-	return ret;
-}
-EXPORT_SYMBOL(kmalloc_large);
-
-void *kmalloc_large_node(size_t size, gfp_t flags, int node)
-{
-	void *ret = __kmalloc_large_node(size, flags, node);
-
-	trace_kmalloc(_RET_IP_, ret, size, PAGE_SIZE << get_order(size),
-		      flags, node);
-	return ret;
-}
-EXPORT_SYMBOL(kmalloc_large_node);
-
 #ifdef CONFIG_SLAB_FREELIST_RANDOM
 /* Randomize a generic freelist */
 static void freelist_randomize(unsigned int *list,