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From:   Hyeonggon Yoo <42.hyeyoo@gmail.com>
To:     Christoph Lameter <cl@linux.com>,
        Pekka Enberg <penberg@kernel.org>,
        David Rientjes <rientjes@google.com>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Vlastimil Babka <vbabka@suse.cz>,
        Roman Gushchin <roman.gushchin@linux.dev>
Cc:     Hyeonggon Yoo <42.hyeyoo@gmail.com>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH v4 03/17] mm/slab_common: remove CONFIG_NUMA ifdefs for common kmalloc functions
Date:   Wed, 17 Aug 2022 19:18:12 +0900
Message-Id: <20220817101826.236819-4-42.hyeyoo@gmail.com>
In-Reply-To: <20220817101826.236819-1-42.hyeyoo@gmail.com>
References: <20220817101826.236819-1-42.hyeyoo@gmail.com>
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Now that slab_alloc_node() is available for SLAB when CONFIG_NUMA=n,
remove CONFIG_NUMA ifdefs for common kmalloc functions.

Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
---
 include/linux/slab.h | 28 ----------------------------
 mm/slab.c            |  2 --
 mm/slob.c            |  5 +----
 mm/slub.c            |  6 ------
 4 files changed, 1 insertion(+), 40 deletions(-)

diff --git a/include/linux/slab.h b/include/linux/slab.h
index 0fefdf528e0d..4754c834b0e3 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -456,38 +456,18 @@ static __always_inline void kfree_bulk(size_t size, void **p)
 	kmem_cache_free_bulk(NULL, size, p);
 }
 
-#ifdef CONFIG_NUMA
 void *__kmalloc_node(size_t size, gfp_t flags, int node) __assume_kmalloc_alignment
 							 __alloc_size(1);
 void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t flags, int node) __assume_slab_alignment
 									 __malloc;
-#else
-static __always_inline __alloc_size(1) void *__kmalloc_node(size_t size, gfp_t flags, int node)
-{
-	return __kmalloc(size, flags);
-}
-
-static __always_inline void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t flags, int node)
-{
-	return kmem_cache_alloc(s, flags);
-}
-#endif
 
 #ifdef CONFIG_TRACING
 extern void *kmem_cache_alloc_trace(struct kmem_cache *s, gfp_t flags, size_t size)
 				   __assume_slab_alignment __alloc_size(3);
 
-#ifdef CONFIG_NUMA
 extern void *kmem_cache_alloc_node_trace(struct kmem_cache *s, gfp_t gfpflags,
 					 int node, size_t size) __assume_slab_alignment
 								__alloc_size(4);
-#else
-static __always_inline __alloc_size(4) void *kmem_cache_alloc_node_trace(struct kmem_cache *s,
-						 gfp_t gfpflags, int node, size_t size)
-{
-	return kmem_cache_alloc_trace(s, gfpflags, size);
-}
-#endif /* CONFIG_NUMA */
 
 #else /* CONFIG_TRACING */
 static __always_inline __alloc_size(3) void *kmem_cache_alloc_trace(struct kmem_cache *s,
@@ -701,20 +681,12 @@ static inline __alloc_size(1, 2) void *kcalloc_node(size_t n, size_t size, gfp_t
 }
 
 
-#ifdef CONFIG_NUMA
 extern void *__kmalloc_node_track_caller(size_t size, gfp_t flags, int node,
 					 unsigned long caller) __alloc_size(1);
 #define kmalloc_node_track_caller(size, flags, node) \
 	__kmalloc_node_track_caller(size, flags, node, \
 			_RET_IP_)
 
-#else /* CONFIG_NUMA */
-
-#define kmalloc_node_track_caller(size, flags, node) \
-	kmalloc_track_caller(size, flags)
-
-#endif /* CONFIG_NUMA */
-
 /*
  * Shortcuts
  */
diff --git a/mm/slab.c b/mm/slab.c
index 748dd085f38e..0acd65358c83 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3535,7 +3535,6 @@ kmem_cache_alloc_trace(struct kmem_cache *cachep, gfp_t flags, size_t size)
 EXPORT_SYMBOL(kmem_cache_alloc_trace);
 #endif
 
-#ifdef CONFIG_NUMA
 /**
  * kmem_cache_alloc_node - Allocate an object on the specified node
  * @cachep: The cache to allocate from.
@@ -3609,7 +3608,6 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t flags,
 	return __do_kmalloc_node(size, flags, node, caller);
 }
 EXPORT_SYMBOL(__kmalloc_node_track_caller);
-#endif /* CONFIG_NUMA */
 
 #ifdef CONFIG_PRINTK
 void __kmem_obj_info(struct kmem_obj_info *kpp, void *object, struct slab *slab)
diff --git a/mm/slob.c b/mm/slob.c
index 2bd4f476c340..74d850967213 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -536,14 +536,12 @@ void *__kmalloc_track_caller(size_t size, gfp_t gfp, unsigned long caller)
 }
 EXPORT_SYMBOL(__kmalloc_track_caller);
 
-#ifdef CONFIG_NUMA
 void *__kmalloc_node_track_caller(size_t size, gfp_t gfp,
 					int node, unsigned long caller)
 {
 	return __do_kmalloc_node(size, gfp, node, caller);
 }
 EXPORT_SYMBOL(__kmalloc_node_track_caller);
-#endif
 
 void kfree(const void *block)
 {
@@ -647,7 +645,7 @@ void *kmem_cache_alloc_lru(struct kmem_cache *cachep, struct list_lru *lru, gfp_
 	return slob_alloc_node(cachep, flags, NUMA_NO_NODE);
 }
 EXPORT_SYMBOL(kmem_cache_alloc_lru);
-#ifdef CONFIG_NUMA
+
 void *__kmalloc_node(size_t size, gfp_t gfp, int node)
 {
 	return __do_kmalloc_node(size, gfp, node, _RET_IP_);
@@ -659,7 +657,6 @@ void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t gfp, int node)
 	return slob_alloc_node(cachep, gfp, node);
 }
 EXPORT_SYMBOL(kmem_cache_alloc_node);
-#endif
 
 static void __kmem_cache_free(void *b, int size)
 {
diff --git a/mm/slub.c b/mm/slub.c
index 862dbd9af4f5..b29b3c9d3175 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3287,7 +3287,6 @@ void *kmem_cache_alloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size)
 EXPORT_SYMBOL(kmem_cache_alloc_trace);
 #endif
 
-#ifdef CONFIG_NUMA
 void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node)
 {
 	void *ret = slab_alloc_node(s, NULL, gfpflags, node, _RET_IP_, s->object_size);
@@ -3314,7 +3313,6 @@ void *kmem_cache_alloc_node_trace(struct kmem_cache *s,
 }
 EXPORT_SYMBOL(kmem_cache_alloc_node_trace);
 #endif
-#endif	/* CONFIG_NUMA */
 
 /*
  * Slow path handling. This may still be called frequently since objects
@@ -4427,7 +4425,6 @@ void *__kmalloc(size_t size, gfp_t flags)
 }
 EXPORT_SYMBOL(__kmalloc);
 
-#ifdef CONFIG_NUMA
 static void *kmalloc_large_node(size_t size, gfp_t flags, int node)
 {
 	struct page *page;
@@ -4474,7 +4471,6 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node)
 	return ret;
 }
 EXPORT_SYMBOL(__kmalloc_node);
-#endif	/* CONFIG_NUMA */
 
 #ifdef CONFIG_HARDENED_USERCOPY
 /*
@@ -4930,7 +4926,6 @@ void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, unsigned long caller)
 }
 EXPORT_SYMBOL(__kmalloc_track_caller);
 
-#ifdef CONFIG_NUMA
 void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
 					int node, unsigned long caller)
 {
@@ -4960,7 +4955,6 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
 	return ret;
 }
 EXPORT_SYMBOL(__kmalloc_node_track_caller);
-#endif
 
 #ifdef CONFIG_SYSFS
 static int count_inuse(struct slab *slab)
-- 
2.32.0