According to the discussion with Christoph [1], it sounds it is pointless to keep CONFIG_SLABINFO around.
This patch just remove CONFIG_SLABINFO config option, but /proc/slabinfo is still available. [1] https://marc.info/?l=linux-kernel&m=150695909709711&w=2 Signed-off-by: Yang Shi <yan...@alibaba-inc.com> --- init/Kconfig | 6 ------ mm/memcontrol.c | 2 -- mm/slab.c | 2 -- mm/slab_common.c | 3 --- mm/slub.c | 2 -- 5 files changed, 15 deletions(-) diff --git a/init/Kconfig b/init/Kconfig index 78cb246..5d3c80a 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1657,12 +1657,6 @@ config HAVE_GENERIC_DMA_COHERENT bool default n -config SLABINFO - bool - depends on PROC_FS - depends on SLAB || SLUB_DEBUG - default y - config RT_MUTEXES bool diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 15af3da..0a8ed72 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4039,7 +4039,6 @@ static ssize_t memcg_write_event_control(struct kernfs_open_file *of, .write = mem_cgroup_reset, .read_u64 = mem_cgroup_read_u64, }, -#ifdef CONFIG_SLABINFO { .name = "kmem.slabinfo", .seq_start = memcg_slab_start, @@ -4047,7 +4046,6 @@ static ssize_t memcg_write_event_control(struct kernfs_open_file *of, .seq_stop = memcg_slab_stop, .seq_show = memcg_slab_show, }, -#endif { .name = "kmem.tcp.limit_in_bytes", .private = MEMFILE_PRIVATE(_TCP, RES_LIMIT), diff --git a/mm/slab.c b/mm/slab.c index 04dec48..5743a51 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -4096,7 +4096,6 @@ static void cache_reap(struct work_struct *w) schedule_delayed_work(work, round_jiffies_relative(REAPTIMEOUT_AC)); } -#ifdef CONFIG_SLABINFO void get_slabinfo(struct kmem_cache *cachep, struct slabinfo *sinfo) { unsigned long active_objs, num_objs, active_slabs; @@ -4404,7 +4403,6 @@ static int __init slab_proc_init(void) return 0; } module_init(slab_proc_init); -#endif #ifdef CONFIG_HARDENED_USERCOPY /* diff --git a/mm/slab_common.c b/mm/slab_common.c index 904a83b..5520a22 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -1175,8 +1175,6 @@ void cache_random_seq_destroy(struct kmem_cache *cachep) } #endif /* CONFIG_SLAB_FREELIST_RANDOM */ -#ifdef CONFIG_SLABINFO - #ifdef CONFIG_SLAB #define SLABINFO_RIGHTS (S_IWUSR | S_IRUSR) #else @@ -1346,7 +1344,6 @@ static int __init slab_proc_init(void) return 0; } module_init(slab_proc_init); -#endif /* CONFIG_SLABINFO */ static __always_inline void *__do_krealloc(const void *p, size_t new_size, gfp_t flags) diff --git a/mm/slub.c b/mm/slub.c index 163352c..74a8776 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -5851,7 +5851,6 @@ static int __init slab_sysfs_init(void) /* * The /proc/slabinfo ABI */ -#ifdef CONFIG_SLABINFO void get_slabinfo(struct kmem_cache *s, struct slabinfo *sinfo) { unsigned long nr_slabs = 0; @@ -5883,4 +5882,3 @@ ssize_t slabinfo_write(struct file *file, const char __user *buffer, { return -EIO; } -#endif /* CONFIG_SLABINFO */ -- 1.8.3.1
