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authorFaiyaz Mohammed <faiyazm@codeaurora.org>2021-06-28 19:34:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-06-29 10:53:47 -0700
commit64dd68497be76ab4e237cca06f5324e220d0f050 (patch)
tree0fdae33947a31f0e26039ef8015aa271ddcc979c /mm/slab.h
parent792702911f581f7793962fbeb99d5c3a1b28f4c3 (diff)
mm: slub: move sysfs slab alloc/free interfaces to debugfs
alloc_calls and free_calls implementation in sysfs have two issues, one is PAGE_SIZE limitation of sysfs and other is it does not adhere to "one value per file" rule. To overcome this issues, move the alloc_calls and free_calls implementation to debugfs. Debugfs cache will be created if SLAB_STORE_USER flag is set. Rename the alloc_calls/free_calls to alloc_traces/free_traces, to be inline with what it does. [faiyazm@codeaurora.org: fix the leak of alloc/free traces debugfs interface] Link: https://lkml.kernel.org/r/1624248060-30286-1-git-send-email-faiyazm@codeaurora.org Link: https://lkml.kernel.org/r/1623438200-19361-1-git-send-email-faiyazm@codeaurora.org Signed-off-by: Faiyaz Mohammed <faiyazm@codeaurora.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slab.h')
-rw-r--r--mm/slab.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/slab.h b/mm/slab.h
index 9b690fa44cae..7f9b4bd9fc65 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -631,6 +631,12 @@ static inline bool slab_want_init_on_free(struct kmem_cache *c)
return false;
}
+#if defined(CONFIG_DEBUG_FS) && defined(CONFIG_SLUB_DEBUG)
+void debugfs_slab_release(struct kmem_cache *);
+#else
+static inline void debugfs_slab_release(struct kmem_cache *s) { }
+#endif
+
#ifdef CONFIG_PRINTK
#define KS_ADDRS_COUNT 16
struct kmem_obj_info {