From 0125c783248707a50819c1423cba8dc455b27612 Mon Sep 17 00:00:00 2001 From: Seongjun Hong Date: Wed, 1 Jul 2026 14:06:33 +0000 Subject: [PATCH] slab: remove unused SL_CPU slab_stat_type Since the removal of the per-cpu slab in commit 32c894c7274b ("slab: remove struct kmem_cache_cpu"), show_slab_objects() no longer has a branch handling SO_CPU, so cpu_slabs_show() always produces "0". Emit "0\n" directly instead, matching the sibling cpu_partial and slabs_cpu_partial stubs, and remove the now-unused SO_CPU macro and SL_CPU enum value. No functional change intended; the cpu_slabs sysfs attribute continues to read 0. Signed-off-by: Seongjun Hong Reviewed-by: Harry Yoo (Oracle) Reviewed-by: Hao Li Link: https://patch.msgid.link/20260701140634.71608-1-hsj0512@snu.ac.kr Signed-off-by: Vlastimil Babka (SUSE) --- mm/slub.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/mm/slub.c b/mm/slub.c index 4d7e3067a5d6..7a8f496b296c 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -8966,14 +8966,12 @@ static void process_slab(struct loc_track *t, struct kmem_cache *s, enum slab_stat_type { SL_ALL, /* All slabs */ SL_PARTIAL, /* Only partially allocated slabs */ - SL_CPU, /* Only slabs used for cpu caches */ SL_OBJECTS, /* Determine allocated objects not slabs */ SL_TOTAL /* Determine object capacity not slabs */ }; #define SO_ALL (1 << SL_ALL) #define SO_PARTIAL (1 << SL_PARTIAL) -#define SO_CPU (1 << SL_CPU) #define SO_OBJECTS (1 << SL_OBJECTS) #define SO_TOTAL (1 << SL_TOTAL) @@ -9162,7 +9160,7 @@ SLAB_ATTR_RO(partial); static ssize_t cpu_slabs_show(struct kmem_cache *s, char *buf) { - return show_slab_objects(s, buf, SO_CPU); + return sysfs_emit(buf, "0\n"); } SLAB_ATTR_RO(cpu_slabs);