From: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
Remove implementations of the metadata-related functions for the tag-based
modes.
The following patches in the series will provide alternative
implementations.
As of this patch, the tag-based modes no longer collect alloc and free
stack traces. This functionality will be restored later in the series.
Reviewed-by: Marco Elver <elver@xxxxxxxxxx>
Signed-off-by: Andrey Konovalov <andreyknvl@xxxxxxxxxx>
---
mm/kasan/tags.c | 33 ++-------------------------------
1 file changed, 2 insertions(+), 31 deletions(-)
diff --git a/mm/kasan/tags.c b/mm/kasan/tags.c
index 2e200969a4b8..f11c89505c77 100644
--- a/mm/kasan/tags.c
+++ b/mm/kasan/tags.c
@@ -19,54 +19,25 @@
void kasan_init_object_meta(struct kmem_cache *cache, const void *object)
{
- struct kasan_alloc_meta *alloc_meta;
-
- alloc_meta = kasan_get_alloc_meta(cache, object);
- if (alloc_meta)
- __memset(alloc_meta, 0, sizeof(*alloc_meta));
}
void kasan_save_alloc_info(struct kmem_cache *cache, void *object, gfp_t flags)
{
- struct kasan_alloc_meta *alloc_meta;
-
- alloc_meta = kasan_get_alloc_meta(cache, object);
- if (alloc_meta)
- kasan_set_track(&alloc_meta->alloc_track, flags);
}
void kasan_save_free_info(struct kmem_cache *cache,
void *object, u8 tag)
{
- struct kasan_alloc_meta *alloc_meta;
-
- alloc_meta = kasan_get_alloc_meta(cache, object);
- if (!alloc_meta)
- return;
-
- kasan_set_track(&alloc_meta->free_track, GFP_NOWAIT);
}
struct kasan_track *kasan_get_alloc_track(struct kmem_cache *cache,
void *object)
{
- struct kasan_alloc_meta *alloc_meta;
-
- alloc_meta = kasan_get_alloc_meta(cache, object);
- if (!alloc_meta)
- return NULL;
-
- return &alloc_meta->alloc_track;
+ return NULL;
}
struct kasan_track *kasan_get_free_track(struct kmem_cache *cache,
void *object, u8 tag)
{
- struct kasan_alloc_meta *alloc_meta;
-
- alloc_meta = kasan_get_alloc_meta(cache, object);
- if (!alloc_meta)
- return NULL;
-
- return &alloc_meta->free_track;
+ return NULL;
}
--
2.25.1
