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| author |   Faiyaz Mohammed <faiyazm@codeaurora.org> | 2021-06-28 19:34:55 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-29 10:53:47 -0700 |
| commit | 64dd68497be76ab4e237cca06f5324e220d0f050 (patch) | |
| tree | 0fdae33947a31f0e26039ef8015aa271ddcc979c /mm/slab_common.c | |
| parent | slub: force on no_hash_pointers when slub_debug is enabled (diff) | |
| download | linux-dev-64dd68497be76ab4e237cca06f5324e220d0f050.tar.xz linux-dev-64dd68497be76ab4e237cca06f5324e220d0f050.zip | |
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_common.c')
| -rw-r--r-- | mm/slab_common.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/slab_common.c b/mm/slab_common.c index b97b6fa8a7c6..6c0db9f9bd8a 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -448,6 +448,7 @@ static void slab_caches_to_rcu_destroy_workfn(struct work_struct *work) rcu_barrier(); list_for_each_entry_safe(s, s2, &to_destroy, list) { + debugfs_slab_release(s); kfence_shutdown_cache(s); #ifdef SLAB_SUPPORTS_SYSFS sysfs_slab_release(s); @@ -475,6 +476,7 @@ static int shutdown_cache(struct kmem_cache *s) schedule_work(&slab_caches_to_rcu_destroy_work); } else { kfence_shutdown_cache(s); + debugfs_slab_release(s); #ifdef SLAB_SUPPORTS_SYSFS sysfs_slab_unlink(s); sysfs_slab_release(s); |