From c29b5b3d33a61e122cb493917ba51c82bcac4121 Mon Sep 17 00:00:00 2001 From: Muchun Song Date: Fri, 14 Jan 2022 14:04:01 -0800 Subject: [PATCH] mm: slab: make slab iterator functions static There is no external users of slab_start/next/stop(), so make them static. And the memory.kmem.slabinfo is deprecated, which outputs nothing now, so move memcg_slab_show() into mm/memcontrol.c and rename it to mem_cgroup_slab_show to be consistent with other function names. Link: https://lkml.kernel.org/r/20211109133359.32881-1-songmuchun@bytedance.com Signed-off-by: Muchun Song Reviewed-by: Vlastimil Babka Cc: Christoph Lameter Cc: Pekka Enberg Cc: David Rientjes Cc: Joonsoo Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 13 ++++++++++++- mm/slab.h | 5 ----- mm/slab_common.c | 17 +++-------------- 3 files changed, 15 insertions(+), 20 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 2ed5f2a..3542237 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4845,6 +4845,17 @@ out_kfree: return ret; } +#if defined(CONFIG_MEMCG_KMEM) && (defined(CONFIG_SLAB) || defined(CONFIG_SLUB_DEBUG)) +static int mem_cgroup_slab_show(struct seq_file *m, void *p) +{ + /* + * Deprecated. + * Please, take a look at tools/cgroup/slabinfo.py . + */ + return 0; +} +#endif + static struct cftype mem_cgroup_legacy_files[] = { { .name = "usage_in_bytes", @@ -4945,7 +4956,7 @@ static struct cftype mem_cgroup_legacy_files[] = { (defined(CONFIG_SLAB) || defined(CONFIG_SLUB_DEBUG)) { .name = "kmem.slabinfo", - .seq_show = memcg_slab_show, + .seq_show = mem_cgroup_slab_show, }, #endif { diff --git a/mm/slab.h b/mm/slab.h index 56ad7ee..053eefa 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -575,11 +575,6 @@ static inline struct kmem_cache_node *get_node(struct kmem_cache *s, int node) #endif -void *slab_start(struct seq_file *m, loff_t *pos); -void *slab_next(struct seq_file *m, void *p, loff_t *pos); -void slab_stop(struct seq_file *m, void *p); -int memcg_slab_show(struct seq_file *m, void *p); - #if defined(CONFIG_SLAB) || defined(CONFIG_SLUB_DEBUG) void dump_unreclaimable_slab(void); #else diff --git a/mm/slab_common.c b/mm/slab_common.c index c6213f1..b7c4318 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -1039,18 +1039,18 @@ static void print_slabinfo_header(struct seq_file *m) seq_putc(m, '\n'); } -void *slab_start(struct seq_file *m, loff_t *pos) +static void *slab_start(struct seq_file *m, loff_t *pos) { mutex_lock(&slab_mutex); return seq_list_start(&slab_caches, *pos); } -void *slab_next(struct seq_file *m, void *p, loff_t *pos) +static void *slab_next(struct seq_file *m, void *p, loff_t *pos) { return seq_list_next(p, &slab_caches, pos); } -void slab_stop(struct seq_file *m, void *p) +static void slab_stop(struct seq_file *m, void *p) { mutex_unlock(&slab_mutex); } @@ -1118,17 +1118,6 @@ void dump_unreclaimable_slab(void) mutex_unlock(&slab_mutex); } -#if defined(CONFIG_MEMCG_KMEM) -int memcg_slab_show(struct seq_file *m, void *p) -{ - /* - * Deprecated. - * Please, take a look at tools/cgroup/slabinfo.py . - */ - return 0; -} -#endif - /* * slabinfo_op - iterator that generates /proc/slabinfo * -- 2.7.4