Merge branch 'topic/kmemtrace' of git://git.kernel.org/pub/scm/linux/kernel/git/penbe...

[linux-2.6-omap-h63xx.git] / mm / slub.c

diff --git a/mm/slub.c b/mm/slub.c
index a2cd47d89e0aa1f159d8e9e6ed2dcee32969068f..4cd7bfd2ab2c1fe45c80f360db744d006ec95d05 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -24,6 +24,7 @@
 #include <linux/kallsyms.h>
 #include <linux/memory.h>
 #include <linux/math64.h>
+#include <linux/kmemtrace.h>
 
 /*
  * Lock order:
@@ -178,7 +179,7 @@ static LIST_HEAD(slab_caches);
  * Tracking user of a slab.
  */
 struct track {
-       void *addr;             /* Called from address */
+       unsigned long addr;     /* Called from address */
        int cpu;                /* Was running on cpu */
        int pid;                /* Pid context */
        unsigned long when;     /* When did the operation occur */
@@ -367,7 +368,7 @@ static struct track *get_track(struct kmem_cache *s, void *object,
 }
 
 static void set_track(struct kmem_cache *s, void *object,
-                               enum track_item alloc, void *addr)
+                       enum track_item alloc, unsigned long addr)
 {
        struct track *p;
 
@@ -391,8 +392,8 @@ static void init_tracking(struct kmem_cache *s, void *object)
        if (!(s->flags & SLAB_STORE_USER))
                return;
 
-       set_track(s, object, TRACK_FREE, NULL);
-       set_track(s, object, TRACK_ALLOC, NULL);
+       set_track(s, object, TRACK_FREE, 0UL);
+       set_track(s, object, TRACK_ALLOC, 0UL);
 }
 
 static void print_track(const char *s, struct track *t)
@@ -401,7 +402,7 @@ static void print_track(const char *s, struct track *t)
                return;
 
        printk(KERN_ERR "INFO: %s in %pS age=%lu cpu=%u pid=%d\n",
-               s, t->addr, jiffies - t->when, t->cpu, t->pid);
+               s, (void *)t->addr, jiffies - t->when, t->cpu, t->pid);
 }
 
 static void print_tracking(struct kmem_cache *s, void *object)
@@ -866,7 +867,7 @@ static void setup_object_debug(struct kmem_cache *s, struct page *page,
 }
 
 static int alloc_debug_processing(struct kmem_cache *s, struct page *page,
-                                               void *object, void *addr)
+                                       void *object, unsigned long addr)
 {
        if (!check_slab(s, page))
                goto bad;
@@ -906,7 +907,7 @@ bad:
 }
 
 static int free_debug_processing(struct kmem_cache *s, struct page *page,
-                                               void *object, void *addr)
+                                       void *object, unsigned long addr)
 {
        if (!check_slab(s, page))
                goto fail;
@@ -1029,10 +1030,10 @@ static inline void setup_object_debug(struct kmem_cache *s,
                        struct page *page, void *object) {}
 
 static inline int alloc_debug_processing(struct kmem_cache *s,
-       struct page *page, void *object, void *addr) { return 0; }
+       struct page *page, void *object, unsigned long addr) { return 0; }
 
 static inline int free_debug_processing(struct kmem_cache *s,
-       struct page *page, void *object, void *addr) { return 0; }
+       struct page *page, void *object, unsigned long addr) { return 0; }
 
 static inline int slab_pad_check(struct kmem_cache *s, struct page *page)
                        { return 1; }
@@ -1499,8 +1500,8 @@ static inline int node_match(struct kmem_cache_cpu *c, int node)
  * we need to allocate a new slab. This is the slowest path since it involves
  * a call to the page allocator and the setup of a new slab.
  */
-static void *__slab_alloc(struct kmem_cache *s,
-               gfp_t gfpflags, int node, void *addr, struct kmem_cache_cpu *c)
+static void *__slab_alloc(struct kmem_cache *s, gfp_t gfpflags, int node,
+                         unsigned long addr, struct kmem_cache_cpu *c)
 {
        void **object;
        struct page *new;
@@ -1584,7 +1585,7 @@ debug:
  * Otherwise we can simply pick the next object from the lockless free list.
  */
 static __always_inline void *slab_alloc(struct kmem_cache *s,
-               gfp_t gfpflags, int node, void *addr)
+               gfp_t gfpflags, int node, unsigned long addr)
 {
        void **object;
        struct kmem_cache_cpu *c;
@@ -1613,18 +1614,46 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
 
 void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags)
 {
-       return slab_alloc(s, gfpflags, -1, __builtin_return_address(0));
+       void *ret = slab_alloc(s, gfpflags, -1, _RET_IP_);
+
+       kmemtrace_mark_alloc(KMEMTRACE_TYPE_CACHE, _RET_IP_, ret,
+                            s->objsize, s->size, gfpflags);
+
+       return ret;
 }
 EXPORT_SYMBOL(kmem_cache_alloc);
 
+#ifdef CONFIG_KMEMTRACE
+void *kmem_cache_alloc_notrace(struct kmem_cache *s, gfp_t gfpflags)
+{
+       return slab_alloc(s, gfpflags, -1, _RET_IP_);
+}
+EXPORT_SYMBOL(kmem_cache_alloc_notrace);
+#endif
+
 #ifdef CONFIG_NUMA
 void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node)
 {
-       return slab_alloc(s, gfpflags, node, __builtin_return_address(0));
+       void *ret = slab_alloc(s, gfpflags, node, _RET_IP_);
+
+       kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_CACHE, _RET_IP_, ret,
+                                 s->objsize, s->size, gfpflags, node);
+
+       return ret;
 }
 EXPORT_SYMBOL(kmem_cache_alloc_node);
 #endif
 
+#ifdef CONFIG_KMEMTRACE
+void *kmem_cache_alloc_node_notrace(struct kmem_cache *s,
+                                   gfp_t gfpflags,
+                                   int node)
+{
+       return slab_alloc(s, gfpflags, node, _RET_IP_);
+}
+EXPORT_SYMBOL(kmem_cache_alloc_node_notrace);
+#endif
+
 /*
  * Slow patch handling. This may still be called frequently since objects
  * have a longer lifetime than the cpu slabs in most processing loads.
@@ -1634,7 +1663,7 @@ EXPORT_SYMBOL(kmem_cache_alloc_node);
  * handling required then we can return immediately.
  */
 static void __slab_free(struct kmem_cache *s, struct page *page,
-                               void *x, void *addr, unsigned int offset)
+                       void *x, unsigned long addr, unsigned int offset)
 {
        void *prior;
        void **object = (void *)x;
@@ -1704,7 +1733,7 @@ debug:
  * with all sorts of special processing.
  */
 static __always_inline void slab_free(struct kmem_cache *s,
-                       struct page *page, void *x, void *addr)
+                       struct page *page, void *x, unsigned long addr)
 {
        void **object = (void *)x;
        struct kmem_cache_cpu *c;
@@ -1731,7 +1760,9 @@ void kmem_cache_free(struct kmem_cache *s, void *x)
 
        page = virt_to_head_page(x);
 
-       slab_free(s, page, x, __builtin_return_address(0));
+       slab_free(s, page, x, _RET_IP_);
+
+       kmemtrace_mark_free(KMEMTRACE_TYPE_CACHE, _RET_IP_, x);
 }
 EXPORT_SYMBOL(kmem_cache_free);
 
@@ -2650,6 +2681,7 @@ static struct kmem_cache *get_slab(size_t size, gfp_t flags)
 void *__kmalloc(size_t size, gfp_t flags)
 {
        struct kmem_cache *s;
+       void *ret;
 
        if (unlikely(size > PAGE_SIZE))
                return kmalloc_large(size, flags);
@@ -2659,7 +2691,12 @@ void *__kmalloc(size_t size, gfp_t flags)
        if (unlikely(ZERO_OR_NULL_PTR(s)))
                return s;
 
-       return slab_alloc(s, flags, -1, __builtin_return_address(0));
+       ret = slab_alloc(s, flags, -1, _RET_IP_);
+
+       kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC, _RET_IP_, ret,
+                            size, s->size, flags);
+
+       return ret;
 }
 EXPORT_SYMBOL(__kmalloc);
 
@@ -2678,16 +2715,30 @@ static void *kmalloc_large_node(size_t size, gfp_t flags, int node)
 void *__kmalloc_node(size_t size, gfp_t flags, int node)
 {
        struct kmem_cache *s;
+       void *ret;
 
-       if (unlikely(size > PAGE_SIZE))
-               return kmalloc_large_node(size, flags, node);
+       if (unlikely(size > PAGE_SIZE)) {
+               ret = kmalloc_large_node(size, flags, node);
+
+               kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC,
+                                         _RET_IP_, ret,
+                                         size, PAGE_SIZE << get_order(size),
+                                         flags, node);
+
+               return ret;
+       }
 
        s = get_slab(size, flags);
 
        if (unlikely(ZERO_OR_NULL_PTR(s)))
                return s;
 
-       return slab_alloc(s, flags, node, __builtin_return_address(0));
+       ret = slab_alloc(s, flags, node, _RET_IP_);
+
+       kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC, _RET_IP_, ret,
+                                 size, s->size, flags, node);
+
+       return ret;
 }
 EXPORT_SYMBOL(__kmalloc_node);
 #endif
@@ -2744,7 +2795,9 @@ void kfree(const void *x)
                put_page(page);
                return;
        }
-       slab_free(page->slab, page, object, __builtin_return_address(0));
+       slab_free(page->slab, page, object, _RET_IP_);
+
+       kmemtrace_mark_free(KMEMTRACE_TYPE_KMALLOC, _RET_IP_, x);
 }
 EXPORT_SYMBOL(kfree);
 
@@ -3202,9 +3255,10 @@ static struct notifier_block __cpuinitdata slab_notifier = {
 
 #endif
 
-void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, void *caller)
+void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, unsigned long caller)
 {
        struct kmem_cache *s;
+       void *ret;
 
        if (unlikely(size > PAGE_SIZE))
                return kmalloc_large(size, gfpflags);
@@ -3214,13 +3268,20 @@ void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, void *caller)
        if (unlikely(ZERO_OR_NULL_PTR(s)))
                return s;
 
-       return slab_alloc(s, gfpflags, -1, caller);
+       ret = slab_alloc(s, gfpflags, -1, caller);
+
+       /* Honor the call site pointer we recieved. */
+       kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC, caller, ret, size,
+                            s->size, gfpflags);
+
+       return ret;
 }
 
 void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
-                                       int node, void *caller)
+                                       int node, unsigned long caller)
 {
        struct kmem_cache *s;
+       void *ret;
 
        if (unlikely(size > PAGE_SIZE))
                return kmalloc_large_node(size, gfpflags, node);
@@ -3230,7 +3291,13 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
        if (unlikely(ZERO_OR_NULL_PTR(s)))
                return s;
 
-       return slab_alloc(s, gfpflags, node, caller);
+       ret = slab_alloc(s, gfpflags, node, caller);
+
+       /* Honor the call site pointer we recieved. */
+       kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC, caller, ret,
+                                 size, s->size, gfpflags, node);
+
+       return ret;
 }
 
 #ifdef CONFIG_SLUB_DEBUG
@@ -3429,7 +3496,7 @@ static void resiliency_test(void) {};
 
 struct location {
        unsigned long count;
-       void *addr;
+       unsigned long addr;
        long long sum_time;
        long min_time;
        long max_time;
@@ -3477,7 +3544,7 @@ static int add_location(struct loc_track *t, struct kmem_cache *s,
 {
        long start, end, pos;
        struct location *l;
-       void *caddr;
+       unsigned long caddr;
        unsigned long age = jiffies - track->when;
 
        start = -1;