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-rw-r--r--mm/slab.c71
-rw-r--r--mm/slob.c37
-rw-r--r--mm/slub.c83
3 files changed, 170 insertions, 21 deletions
diff --git a/mm/slab.c b/mm/slab.c
index 4d00855629c..aeeb4ecb942 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -102,6 +102,7 @@
#include <linux/cpu.h>
#include <linux/sysctl.h>
#include <linux/module.h>
+#include <trace/kmemtrace.h>
#include <linux/rcupdate.h>
#include <linux/string.h>
#include <linux/uaccess.h>
@@ -568,6 +569,14 @@ static void **dbg_userword(struct kmem_cache *cachep, void *objp)
#endif
+#ifdef CONFIG_KMEMTRACE
+size_t slab_buffer_size(struct kmem_cache *cachep)
+{
+ return cachep->buffer_size;
+}
+EXPORT_SYMBOL(slab_buffer_size);
+#endif
+
/*
* Do not go above this order unless 0 objects fit into the slab.
*/
@@ -3550,10 +3559,23 @@ static inline void __cache_free(struct kmem_cache *cachep, void *objp)
*/
void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags)
{
- return __cache_alloc(cachep, flags, __builtin_return_address(0));
+ void *ret = __cache_alloc(cachep, flags, __builtin_return_address(0));
+
+ kmemtrace_mark_alloc(KMEMTRACE_TYPE_CACHE, _RET_IP_, ret,
+ obj_size(cachep), cachep->buffer_size, flags);
+
+ return ret;
}
EXPORT_SYMBOL(kmem_cache_alloc);
+#ifdef CONFIG_KMEMTRACE
+void *kmem_cache_alloc_notrace(struct kmem_cache *cachep, gfp_t flags)
+{
+ return __cache_alloc(cachep, flags, __builtin_return_address(0));
+}
+EXPORT_SYMBOL(kmem_cache_alloc_notrace);
+#endif
+
/**
* kmem_ptr_validate - check if an untrusted pointer might be a slab entry.
* @cachep: the cache we're checking against
@@ -3598,23 +3620,47 @@ out:
#ifdef CONFIG_NUMA
void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t flags, int nodeid)
{
- return __cache_alloc_node(cachep, flags, nodeid,
- __builtin_return_address(0));
+ void *ret = __cache_alloc_node(cachep, flags, nodeid,
+ __builtin_return_address(0));
+
+ kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_CACHE, _RET_IP_, ret,
+ obj_size(cachep), cachep->buffer_size,
+ flags, nodeid);
+
+ return ret;
}
EXPORT_SYMBOL(kmem_cache_alloc_node);
+#ifdef CONFIG_KMEMTRACE
+void *kmem_cache_alloc_node_notrace(struct kmem_cache *cachep,
+ gfp_t flags,
+ int nodeid)
+{
+ return __cache_alloc_node(cachep, flags, nodeid,
+ __builtin_return_address(0));
+}
+EXPORT_SYMBOL(kmem_cache_alloc_node_notrace);
+#endif
+
static __always_inline void *
__do_kmalloc_node(size_t size, gfp_t flags, int node, void *caller)
{
struct kmem_cache *cachep;
+ void *ret;
cachep = kmem_find_general_cachep(size, flags);
if (unlikely(ZERO_OR_NULL_PTR(cachep)))
return cachep;
- return kmem_cache_alloc_node(cachep, flags, node);
+ ret = kmem_cache_alloc_node_notrace(cachep, flags, node);
+
+ kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC,
+ (unsigned long) caller, ret,
+ size, cachep->buffer_size, flags, node);
+
+ return ret;
}
-#ifdef CONFIG_DEBUG_SLAB
+#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_KMEMTRACE)
void *__kmalloc_node(size_t size, gfp_t flags, int node)
{
return __do_kmalloc_node(size, flags, node,
@@ -3647,6 +3693,7 @@ static __always_inline void *__do_kmalloc(size_t size, gfp_t flags,
void *caller)
{
struct kmem_cache *cachep;
+ void *ret;
/* If you want to save a few bytes .text space: replace
* __ with kmem_.
@@ -3656,11 +3703,17 @@ static __always_inline void *__do_kmalloc(size_t size, gfp_t flags,
cachep = __find_general_cachep(size, flags);
if (unlikely(ZERO_OR_NULL_PTR(cachep)))
return cachep;
- return __cache_alloc(cachep, flags, caller);
+ ret = __cache_alloc(cachep, flags, caller);
+
+ kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC,
+ (unsigned long) caller, ret,
+ size, cachep->buffer_size, flags);
+
+ return ret;
}
-#ifdef CONFIG_DEBUG_SLAB
+#if defined(CONFIG_DEBUG_SLAB) || defined(CONFIG_KMEMTRACE)
void *__kmalloc(size_t size, gfp_t flags)
{
return __do_kmalloc(size, flags, __builtin_return_address(0));
@@ -3699,6 +3752,8 @@ void kmem_cache_free(struct kmem_cache *cachep, void *objp)
debug_check_no_obj_freed(objp, obj_size(cachep));
__cache_free(cachep, objp);
local_irq_restore(flags);
+
+ kmemtrace_mark_free(KMEMTRACE_TYPE_CACHE, _RET_IP_, objp);
}
EXPORT_SYMBOL(kmem_cache_free);
@@ -3725,6 +3780,8 @@ void kfree(const void *objp)
debug_check_no_obj_freed(objp, obj_size(c));
__cache_free(c, (void *)objp);
local_irq_restore(flags);
+
+ kmemtrace_mark_free(KMEMTRACE_TYPE_KMALLOC, _RET_IP_, objp);
}
EXPORT_SYMBOL(kfree);
diff --git a/mm/slob.c b/mm/slob.c
index 52bc8a2bd9e..f9cc2468823 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -65,6 +65,7 @@
#include <linux/module.h>
#include <linux/rcupdate.h>
#include <linux/list.h>
+#include <trace/kmemtrace.h>
#include <asm/atomic.h>
/*
@@ -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_KMALLOC,
+ _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_KMALLOC,
+ _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_KMALLOC, _RET_IP_, block);
}
EXPORT_SYMBOL(kfree);
@@ -570,10 +584,19 @@ 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(b);
@@ -609,6 +632,8 @@ 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);
diff --git a/mm/slub.c b/mm/slub.c
index 0280eee6cf3..3525e7b21d1 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -16,6 +16,7 @@
#include <linux/slab.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#include <trace/kmemtrace.h>
#include <linux/cpu.h>
#include <linux/cpuset.h>
#include <linux/mempolicy.h>
@@ -1623,18 +1624,46 @@ 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, _RET_IP_);
+ 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, _RET_IP_);
+ 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.
@@ -1742,6 +1771,8 @@ void kmem_cache_free(struct kmem_cache *s, void *x)
page = virt_to_head_page(x);
slab_free(s, page, x, _RET_IP_);
+
+ kmemtrace_mark_free(KMEMTRACE_TYPE_CACHE, _RET_IP_, x);
}
EXPORT_SYMBOL(kmem_cache_free);
@@ -2657,6 +2688,7 @@ 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);
@@ -2666,7 +2698,12 @@ void *__kmalloc(size_t size, gfp_t flags)
if (unlikely(ZERO_OR_NULL_PTR(s)))
return s;
- return slab_alloc(s, flags, -1, _RET_IP_);
+ 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);
@@ -2685,16 +2722,30 @@ 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, _RET_IP_);
+ 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
@@ -2753,6 +2804,8 @@ void kfree(const void *x)
return;
}
slab_free(page->slab, page, object, _RET_IP_);
+
+ kmemtrace_mark_free(KMEMTRACE_TYPE_KMALLOC, _RET_IP_, x);
}
EXPORT_SYMBOL(kfree);
@@ -3222,6 +3275,7 @@ static struct notifier_block __cpuinitdata slab_notifier = {
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);
@@ -3231,13 +3285,20 @@ void *__kmalloc_track_caller(size_t size, gfp_t gfpflags, unsigned long 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, unsigned long caller)
{
struct kmem_cache *s;
+ void *ret;
if (unlikely(size > PAGE_SIZE))
return kmalloc_large_node(size, gfpflags, node);
@@ -3247,7 +3308,13 @@ 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
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-27 22:48:33 +0000