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Message-Id: <20220712133946.307181-12-42.hyeyoo@gmail.com>
Date: Tue, 12 Jul 2022 13:39:41 +0000
From: Hyeonggon Yoo <42.hyeyoo@...il.com>
To: 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>,
Vlastimil Babka <vbabka@...e.cz>,
Roman Gushchin <roman.gushchin@...ux.dev>,
Hyeonggon Yoo <42.hyeyoo@...il.com>,
Joe Perches <joe@...ches.com>,
Vasily Averin <vasily.averin@...ux.dev>,
Matthew WilCox <willy@...radead.org>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH v3 11/15] mm/sl[au]b: introduce common alloc/free functions without tracepoint
To unify kmalloc functions in later patch, introduce common alloc/free
functions that does not have tracepoint.
Signed-off-by: Hyeonggon Yoo <42.hyeyoo@...il.com>
---
v3:
Tried to avoid affecting existing functions.
mm/slab.c | 36 +++++++++++++++++++++++++++++-------
mm/slab.h | 4 ++++
mm/slub.c | 13 +++++++++++++
3 files changed, 46 insertions(+), 7 deletions(-)
diff --git a/mm/slab.c b/mm/slab.c
index a2f43425a0ae..375e35c14430 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3560,6 +3560,14 @@ void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid)
}
EXPORT_SYMBOL(kmem_cache_alloc_node);
+void *__kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t flags,
+ int nodeid, size_t orig_size,
+ unsigned long caller)
+{
+ return slab_alloc_node(cachep, NULL, flags, nodeid,
+ orig_size, caller);
+}
+
#ifdef CONFIG_TRACING
void *kmem_cache_alloc_node_trace(struct kmem_cache *cachep,
gfp_t flags,
@@ -3645,6 +3653,26 @@ void *__kmalloc(size_t size, gfp_t flags)
}
EXPORT_SYMBOL(__kmalloc);
+static __always_inline
+void __do_kmem_cache_free(struct kmem_cache *cachep, void *objp,
+ unsigned long caller)
+{
+ unsigned long flags;
+
+ local_irq_save(flags);
+ debug_check_no_locks_freed(objp, cachep->object_size);
+ if (!(cachep->flags & SLAB_DEBUG_OBJECTS))
+ debug_check_no_obj_freed(objp, cachep->object_size);
+ __cache_free(cachep, objp, caller);
+ local_irq_restore(flags);
+}
+
+void __kmem_cache_free(struct kmem_cache *cachep, void *objp,
+ unsigned long caller)
+{
+ __do_kmem_cache_free(cachep, objp, caller);
+}
+
/**
* kmem_cache_free - Deallocate an object
* @cachep: The cache the allocation was from.
@@ -3655,18 +3683,12 @@ EXPORT_SYMBOL(__kmalloc);
*/
void kmem_cache_free(struct kmem_cache *cachep, void *objp)
{
- unsigned long flags;
cachep = cache_from_obj(cachep, objp);
if (!cachep)
return;
trace_kmem_cache_free(_RET_IP_, objp, cachep->name);
- local_irq_save(flags);
- debug_check_no_locks_freed(objp, cachep->object_size);
- if (!(cachep->flags & SLAB_DEBUG_OBJECTS))
- debug_check_no_obj_freed(objp, cachep->object_size);
- __cache_free(cachep, objp, _RET_IP_);
- local_irq_restore(flags);
+ __do_kmem_cache_free(cachep, objp, _RET_IP_);
}
EXPORT_SYMBOL(kmem_cache_free);
diff --git a/mm/slab.h b/mm/slab.h
index c81c92d421f1..9193e9c1f040 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -275,6 +275,10 @@ void create_kmalloc_caches(slab_flags_t);
struct kmem_cache *kmalloc_slab(size_t, gfp_t);
void *kmalloc_large_node_notrace(size_t size, gfp_t flags, int node);
+void *__kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags,
+ int node, size_t orig_size,
+ unsigned long caller);
+void __kmem_cache_free(struct kmem_cache *s, void *x, unsigned long caller);
#endif
gfp_t kmalloc_fix_flags(gfp_t flags);
diff --git a/mm/slub.c b/mm/slub.c
index 6cb7ca27f3b7..74eb78678c98 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -3262,6 +3262,14 @@ void *kmem_cache_alloc_lru(struct kmem_cache *s, struct list_lru *lru,
}
EXPORT_SYMBOL(kmem_cache_alloc_lru);
+void *__kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags,
+ int node, size_t orig_size,
+ unsigned long caller)
+{
+ return slab_alloc_node(s, NULL, gfpflags, node,
+ caller, orig_size);
+}
+
#ifdef CONFIG_TRACING
void *kmem_cache_alloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size)
{
@@ -3526,6 +3534,11 @@ void ___cache_free(struct kmem_cache *cache, void *x, unsigned long addr)
}
#endif
+void __kmem_cache_free(struct kmem_cache *s, void *x, unsigned long caller)
+{
+ slab_free(s, virt_to_slab(x), x, NULL, &x, 1, caller);
+}
+
void kmem_cache_free(struct kmem_cache *s, void *x)
{
s = cache_from_obj(s, x);
--
2.34.1
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