linux-kernel - [PATCH v2 08/23] mm/slab_common: make kmalloc_large_node() consistent with kmalloc

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Date:   Thu, 14 Apr 2022 17:57:12 +0900
From:   Hyeonggon Yoo <42.hyeyoo@...il.com>
To:     Vlastimil Babka <vbabka@...e.cz>
Cc:     Marco Elver <elver@...gle.com>,
        Matthew WilCox <willy@...radead.org>,
        Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Hyeonggon Yoo <42.hyeyoo@...il.com>,
        Roman Gushchin <roman.gushchin@...ux.dev>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 08/23] mm/slab_common: make kmalloc_large_node() consistent with kmalloc_large()

Move tracepoints into kmalloc_large_node() and add missing flag fix code.

Signed-off-by: Hyeonggon Yoo <42.hyeyoo@...il.com>
---
 mm/slab_common.c |  6 ++++++
 mm/slub.c        | 22 ++++------------------
 2 files changed, 10 insertions(+), 18 deletions(-)

diff --git a/mm/slab_common.c b/mm/slab_common.c
index e72089515030..cf17be8cd9ad 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -955,6 +955,9 @@ void *kmalloc_large_node(size_t size, gfp_t flags, int node)
 	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) {
@@ -966,6 +969,9 @@ void *kmalloc_large_node(size_t size, gfp_t flags, int node)
 	ptr = kasan_kmalloc_large(ptr, size, flags);
 	/* As ptr might get tagged, call kmemleak hook after KASAN. */
 	kmemleak_alloc(ptr, size, 1, flags);
+	trace_kmalloc_node(_RET_IP_, ptr,
+			   size, PAGE_SIZE << order,
+			   flags, node);
 
 	return ptr;
 }
diff --git a/mm/slub.c b/mm/slub.c
index 640712706f2b..f10a892f1772 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -4396,15 +4396,8 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node)
 	struct kmem_cache *s;
 	void *ret;
 
-	if (unlikely(size > KMALLOC_MAX_CACHE_SIZE)) {
-		ret = kmalloc_large_node(size, flags, node);
-
-		trace_kmalloc_node(_RET_IP_, ret,
-				   size, PAGE_SIZE << get_order(size),
-				   flags, node);
-
-		return ret;
-	}
+	if (unlikely(size > KMALLOC_MAX_CACHE_SIZE))
+		return kmalloc_large_node(size, flags, node);
 
 	s = kmalloc_slab(size, flags);
 
@@ -4861,15 +4854,8 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
 	struct kmem_cache *s;
 	void *ret;
 
-	if (unlikely(size > KMALLOC_MAX_CACHE_SIZE)) {
-		ret = kmalloc_large_node(size, gfpflags, node);
-
-		trace_kmalloc_node(caller, ret,
-				   size, PAGE_SIZE << get_order(size),
-				   gfpflags, node);
-
-		return ret;
-	}
+	if (unlikely(size > KMALLOC_MAX_CACHE_SIZE))
+		return kmalloc_large_node(size, gfpflags, node);
 
 	s = kmalloc_slab(size, gfpflags);
 
-- 
2.32.0