From: Linus Torvalds Date: Mon, 10 Jan 2011 16:38:01 +0000 (-0800) Subject: Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg... X-Git-Tag: v2.6.38-rc1~436 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=a1e8fad5900fa94adb500c6e0dfd60a307f7a3c9 Merge branch 'for-linus' of git://git./linux/kernel/git/penberg/slab-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: slub: Fix a crash during slabinfo -v tracing/slab: Move kmalloc tracepoint out of inline code slub: Fix slub_lock down/up imbalance slub: Fix build breakage in Documentation/vm slub tracing: move trace calls out of always inlined functions to reduce kernel code size slub: move slabinfo.c to tools/slub/slabinfo.c --- a1e8fad5900fa94adb500c6e0dfd60a307f7a3c9 diff --cc mm/slab.c index e9f92987954a,dfcc8885d7d5..264037449f08 --- a/mm/slab.c +++ b/mm/slab.c @@@ -3653,13 -3653,50 +3653,20 @@@ void *kmem_cache_alloc(struct kmem_cach EXPORT_SYMBOL(kmem_cache_alloc); #ifdef CONFIG_TRACING - void *kmem_cache_alloc_notrace(struct kmem_cache *cachep, gfp_t flags) + void * + kmem_cache_alloc_trace(size_t size, struct kmem_cache *cachep, gfp_t flags) { - return __cache_alloc(cachep, flags, __builtin_return_address(0)); + void *ret; + + ret = __cache_alloc(cachep, flags, __builtin_return_address(0)); + + trace_kmalloc(_RET_IP_, ret, + size, slab_buffer_size(cachep), flags); + return ret; } - EXPORT_SYMBOL(kmem_cache_alloc_notrace); + EXPORT_SYMBOL(kmem_cache_alloc_trace); #endif -/** - * kmem_ptr_validate - check if an untrusted pointer might be a slab entry. - * @cachep: the cache we're checking against - * @ptr: pointer to validate - * - * This verifies that the untrusted pointer looks sane; - * it is _not_ a guarantee that the pointer is actually - * part of the slab cache in question, but it at least - * validates that the pointer can be dereferenced and - * looks half-way sane. - * - * Currently only used for dentry validation. - */ -int kmem_ptr_validate(struct kmem_cache *cachep, const void *ptr) -{ - unsigned long size = cachep->buffer_size; - struct page *page; - - if (unlikely(!kern_ptr_validate(ptr, size))) - goto out; - page = virt_to_page(ptr); - if (unlikely(!PageSlab(page))) - goto out; - if (unlikely(page_get_cache(page) != cachep)) - goto out; - return 1; -out: - return 0; -} - #ifdef CONFIG_NUMA void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid) {