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authorVasily Averin <vvs@openvz.org>2022-06-03 06:21:49 +0300
committerVlastimil Babka <vbabka@suse.cz>2022-07-04 18:11:27 +0300
commitb347aa7b57477f71c740e2bbc6d1078a7109ba23 (patch)
tree2e2f1c711884b182d0134287c6b219733684ccf6 /mm/slab_common.c
parent0c7e0d699ef1430d7f4cf12b4b1d097af58b5515 (diff)
downloadlinux-b347aa7b57477f71c740e2bbc6d1078a7109ba23.tar.xz
mm/tracing: add 'accounted' entry into output of allocation tracepoints
Slab caches marked with SLAB_ACCOUNT force accounting for every allocation from this cache even if __GFP_ACCOUNT flag is not passed. Unfortunately, at the moment this flag is not visible in ftrace output, and this makes it difficult to analyze the accounted allocations. This patch adds boolean "accounted" entry into trace output, and set it to 'true' for calls used __GFP_ACCOUNT flag and for allocations from caches marked with SLAB_ACCOUNT. Set it to 'false' if accounting is disabled in configs. Signed-off-by: Vasily Averin <vvs@openvz.org> Acked-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Acked-by: Muchun Song <songmuchun@bytedance.com> Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Link: https://lore.kernel.org/r/c418ed25-65fe-f623-fbf8-1676528859ed@openvz.org Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Diffstat (limited to 'mm/slab_common.c')
-rw-r--r--mm/slab_common.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 77c3adf40e50..6c9aac5d8f4a 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -26,13 +26,12 @@
#include <linux/memcontrol.h>
#include <linux/stackdepot.h>
-#define CREATE_TRACE_POINTS
-#include <trace/events/kmem.h>
-
#include "internal.h"
-
#include "slab.h"
+#define CREATE_TRACE_POINTS
+#include <trace/events/kmem.h>
+
enum slab_state slab_state;
LIST_HEAD(slab_caches);
DEFINE_MUTEX(slab_mutex);
@@ -959,7 +958,7 @@ EXPORT_SYMBOL(kmalloc_order);
void *kmalloc_order_trace(size_t size, gfp_t flags, unsigned int order)
{
void *ret = kmalloc_order(size, flags, order);
- trace_kmalloc(_RET_IP_, ret, size, PAGE_SIZE << order, flags);
+ trace_kmalloc(_RET_IP_, ret, NULL, size, PAGE_SIZE << order, flags);
return ret;
}
EXPORT_SYMBOL(kmalloc_order_trace);