From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by ag-out-0708.google.com with SMTP id 22so4236995agd.8 for ; Wed, 16 Jul 2008 17:48:31 -0700 (PDT) From: Eduard - Gabriel Munteanu Subject: [RFC PATCH 4/4] kmemtrace: SLOB hooks. Date: Thu, 17 Jul 2008 03:46:48 +0300 Message-Id: <9e4ab51fe29754243e4577dec4649c5522ddd4f8.1216255036.git.eduard.munteanu@linux360.ro> In-Reply-To: <017a63e6be64502c36ede4733f0cc4e5ede75db2.1216255035.git.eduard.munteanu@linux360.ro> References: <4472a3f883b0d9026bb2d8c490233b3eadf9b55e.1216255035.git.eduard.munteanu@linux360.ro> <99a4b0edd280049b57a400b5934714ad66ea5788.1216255035.git.eduard.munteanu@linux360.ro> <017a63e6be64502c36ede4733f0cc4e5ede75db2.1216255035.git.eduard.munteanu@linux360.ro> In-Reply-To: References: Sender: owner-linux-mm@kvack.org Return-Path: To: penberg@cs.helsinki.fi Cc: cl@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: This adds hooks for the SLOB allocator, to allow tracing with kmemtrace. Signed-off-by: Eduard - Gabriel Munteanu --- mm/slob.c | 37 +++++++++++++++++++++++++++++++------ 1 files changed, 31 insertions(+), 6 deletions(-) diff --git a/mm/slob.c b/mm/slob.c index a3ad667..0335c01 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -65,6 +65,7 @@ #include #include #include +#include #include /* @@ -463,27 +464,38 @@ void *__kmalloc_node(size_t size, gfp_t gfp, int node) { unsigned int *m; int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN); + void *ret; if (size < PAGE_SIZE - align) { if (!size) return ZERO_SIZE_PTR; m = slob_alloc(size + align, gfp, align, node); + if (!m) return NULL; *m = size; - return (void *)m + align; + ret = (void *)m + align; + + kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KERNEL, + _RET_IP_, ret, + size, size + align, gfp, node); } else { - void *ret; + unsigned int order = get_order(size); - ret = slob_new_page(gfp | __GFP_COMP, get_order(size), node); + ret = slob_new_page(gfp | __GFP_COMP, order, node); if (ret) { struct page *page; page = virt_to_page(ret); page->private = size; } - return ret; + + kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KERNEL, + _RET_IP_, ret, + size, PAGE_SIZE << order, gfp, node); } + + return ret; } EXPORT_SYMBOL(__kmalloc_node); @@ -501,6 +513,8 @@ void kfree(const void *block) slob_free(m, *m + align); } else put_page(&sp->page); + + kmemtrace_mark_free(KMEMTRACE_TYPE_KERNEL, _RET_IP_, block); } EXPORT_SYMBOL(kfree); @@ -569,10 +583,19 @@ void *kmem_cache_alloc_node(struct kmem_cache *c, gfp_t flags, int node) { void *b; - if (c->size < PAGE_SIZE) + if (c->size < PAGE_SIZE) { b = slob_alloc(c->size, flags, c->align, node); - else + kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_CACHE, + _RET_IP_, b, c->size, + SLOB_UNITS(c->size) * SLOB_UNIT, + flags, node); + } else { b = slob_new_page(flags, get_order(c->size), node); + kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_CACHE, + _RET_IP_, b, c->size, + PAGE_SIZE << get_order(c->size), + flags, node); + } if (c->ctor) c->ctor(c, b); @@ -608,6 +631,8 @@ void kmem_cache_free(struct kmem_cache *c, void *b) } else { __kmem_cache_free(b, c->size); } + + kmemtrace_mark_free(KMEMTRACE_TYPE_CACHE, _RET_IP_, b); } EXPORT_SYMBOL(kmem_cache_free); -- 1.5.6.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org