diff options
| author | Peng Zhang <zhangpeng.00@bytedance.com> | 2023-07-18 15:30:19 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-08-18 10:12:39 -0700 |
| commit | cabdf74e6b319c989eb8e812f1854291ae0af1c0 (patch) | |
| tree | 46575c9410c293eb2c3bacec52621f00d8a1ce67 /mm/mm_init.c | |
| parent | 8d3a7d797c1a18a24f602a7398103ee894c5bc3b (diff) | |
mm: kfence: allocate kfence_metadata at runtime
kfence_metadata is currently a static array. For the purpose of
allocating scalable __kfence_pool, we first change it to runtime
allocation of metadata. Since the size of an object of kfence_metadata is
1160 bytes, we can save at least 72 pages (with default 256 objects)
without enabling kfence.
[akpm@linux-foundation.org: restore newline, per Marco]
Link: https://lkml.kernel.org/r/20230718073019.52513-1-zhangpeng.00@bytedance.com
Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Muchun Song <muchun.song@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/mm_init.c')
| -rw-r--r-- | mm/mm_init.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/mm_init.c b/mm/mm_init.c index 7e3fcdbe997b..acb0ac194672 100644 --- a/mm/mm_init.c +++ b/mm/mm_init.c @@ -2767,7 +2767,7 @@ void __init mm_core_init(void) */ page_ext_init_flatmem(); mem_debugging_and_hardening_init(); - kfence_alloc_pool(); + kfence_alloc_pool_and_metadata(); report_meminit(); kmsan_init_shadow(); stack_depot_early_init(); |