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slub: Enable sysfs support for !CONFIG_SLUB_DEBUG
Currently disabling CONFIG_SLUB_DEBUG also disabled SYSFS support meaning that the slabs cannot be tuned without DEBUG. Make SYSFS support independent of CONFIG_SLUB_DEBUG Signed-off-by: Christoph Lameter <cl@linux.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
This commit is contained in:
Christoph Lameter
Pekka Enberg
parent
15b7c51420
commit
ab4d5ed5ee
3 changed files with 37 additions and 7 deletions
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@ -87,7 +87,7 @@ struct kmem_cache {
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unsigned long min_partial;
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const char *name; /* Name (only for display!) */
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struct list_head list; /* List of slab caches */
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#ifdef CONFIG_SLUB_DEBUG
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#ifdef CONFIG_SYSFS
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struct kobject kobj; /* For sysfs */
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#endif
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@ -353,7 +353,7 @@ config SLUB_DEBUG_ON
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config SLUB_STATS
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default n
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bool "Enable SLUB performance statistics"
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depends on SLUB && SLUB_DEBUG && SYSFS
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depends on SLUB && SYSFS
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help
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SLUB statistics are useful to debug SLUBs allocation behavior in
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order find ways to optimize the allocator. This should never be
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40
mm/slub.c
40
mm/slub.c
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@ -198,7 +198,7 @@ struct track {
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enum track_item { TRACK_ALLOC, TRACK_FREE };
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#ifdef CONFIG_SLUB_DEBUG
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#ifdef CONFIG_SYSFS
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static int sysfs_slab_add(struct kmem_cache *);
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static int sysfs_slab_alias(struct kmem_cache *, const char *);
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static void sysfs_slab_remove(struct kmem_cache *);
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@ -1102,7 +1102,7 @@ static inline void slab_free_hook(struct kmem_cache *s, void *x) {}
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static inline void slab_free_hook_irq(struct kmem_cache *s,
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void *object) {}
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#endif
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#endif /* CONFIG_SLUB_DEBUG */
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/*
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* Slab allocation and freeing
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@ -3373,7 +3373,7 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
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}
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#endif
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#ifdef CONFIG_SLUB_DEBUG
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#ifdef CONFIG_SYSFS
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static int count_inuse(struct page *page)
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{
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return page->inuse;
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@ -3383,7 +3383,9 @@ static int count_total(struct page *page)
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{
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return page->objects;
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}
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#endif
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#ifdef CONFIG_SLUB_DEBUG
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static int validate_slab(struct kmem_cache *s, struct page *page,
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unsigned long *map)
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{
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@ -3474,6 +3476,7 @@ static long validate_slab_cache(struct kmem_cache *s)
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kfree(map);
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return count;
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}
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#endif
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#ifdef SLUB_RESILIENCY_TEST
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static void resiliency_test(void)
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@ -3532,9 +3535,12 @@ static void resiliency_test(void)
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validate_slab_cache(kmalloc_caches[9]);
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}
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#else
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#ifdef CONFIG_SYSFS
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static void resiliency_test(void) {};
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#endif
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#endif
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#ifdef CONFIG_DEBUG
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/*
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* Generate lists of code addresses where slabcache objects are allocated
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* and freed.
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@ -3763,7 +3769,9 @@ static int list_locations(struct kmem_cache *s, char *buf,
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len += sprintf(buf, "No data\n");
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return len;
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}
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#endif
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#ifdef CONFIG_SYSFS
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enum slab_stat_type {
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SL_ALL, /* All slabs */
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SL_PARTIAL, /* Only partially allocated slabs */
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@ -3816,6 +3824,8 @@ static ssize_t show_slab_objects(struct kmem_cache *s,
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}
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}
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down_read(&slub_lock);
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#ifdef CONFIG_SLUB_DEBUG
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if (flags & SO_ALL) {
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for_each_node_state(node, N_NORMAL_MEMORY) {
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struct kmem_cache_node *n = get_node(s, node);
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@ -3832,7 +3842,9 @@ static ssize_t show_slab_objects(struct kmem_cache *s,
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nodes[node] += x;
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}
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} else if (flags & SO_PARTIAL) {
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} else
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#endif
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if (flags & SO_PARTIAL) {
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for_each_node_state(node, N_NORMAL_MEMORY) {
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struct kmem_cache_node *n = get_node(s, node);
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@ -3857,6 +3869,7 @@ static ssize_t show_slab_objects(struct kmem_cache *s,
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return x + sprintf(buf + x, "\n");
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}
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#ifdef CONFIG_SLUB_DEBUG
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static int any_slab_objects(struct kmem_cache *s)
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{
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int node;
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@ -3872,6 +3885,7 @@ static int any_slab_objects(struct kmem_cache *s)
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}
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return 0;
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}
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#endif
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#define to_slab_attr(n) container_of(n, struct slab_attribute, attr)
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#define to_slab(n) container_of(n, struct kmem_cache, kobj);
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@ -3973,11 +3987,13 @@ static ssize_t aliases_show(struct kmem_cache *s, char *buf)
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}
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SLAB_ATTR_RO(aliases);
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#ifdef CONFIG_SLUB_DEBUG
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static ssize_t slabs_show(struct kmem_cache *s, char *buf)
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{
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return show_slab_objects(s, buf, SO_ALL);
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}
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SLAB_ATTR_RO(slabs);
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#endif
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static ssize_t partial_show(struct kmem_cache *s, char *buf)
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{
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@ -4003,6 +4019,7 @@ static ssize_t objects_partial_show(struct kmem_cache *s, char *buf)
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}
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SLAB_ATTR_RO(objects_partial);
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#ifdef CONFIG_SLUB_DEBUG
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static ssize_t total_objects_show(struct kmem_cache *s, char *buf)
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{
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return show_slab_objects(s, buf, SO_ALL|SO_TOTAL);
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@ -4055,6 +4072,7 @@ static ssize_t failslab_store(struct kmem_cache *s, const char *buf,
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}
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SLAB_ATTR(failslab);
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#endif
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#endif
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static ssize_t reclaim_account_show(struct kmem_cache *s, char *buf)
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{
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@ -4091,6 +4109,7 @@ static ssize_t destroy_by_rcu_show(struct kmem_cache *s, char *buf)
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}
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SLAB_ATTR_RO(destroy_by_rcu);
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#ifdef CONFIG_SLUB_DEBUG
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static ssize_t red_zone_show(struct kmem_cache *s, char *buf)
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{
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return sprintf(buf, "%d\n", !!(s->flags & SLAB_RED_ZONE));
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@ -4166,6 +4185,7 @@ static ssize_t validate_store(struct kmem_cache *s,
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return ret;
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}
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SLAB_ATTR(validate);
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#endif
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static ssize_t shrink_show(struct kmem_cache *s, char *buf)
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{
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@ -4186,6 +4206,7 @@ static ssize_t shrink_store(struct kmem_cache *s,
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}
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SLAB_ATTR(shrink);
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#ifdef CONFIG_SLUB_DEBUG
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static ssize_t alloc_calls_show(struct kmem_cache *s, char *buf)
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{
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if (!(s->flags & SLAB_STORE_USER))
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@ -4201,6 +4222,7 @@ static ssize_t free_calls_show(struct kmem_cache *s, char *buf)
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return list_locations(s, buf, TRACK_FREE);
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}
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SLAB_ATTR_RO(free_calls);
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#endif
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#ifdef CONFIG_NUMA
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static ssize_t remote_node_defrag_ratio_show(struct kmem_cache *s, char *buf)
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@ -4307,25 +4329,33 @@ static struct attribute *slab_attrs[] = {
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&min_partial_attr.attr,
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&objects_attr.attr,
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&objects_partial_attr.attr,
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#ifdef CONFIG_SLUB_DEBUG
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&total_objects_attr.attr,
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&slabs_attr.attr,
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#endif
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&partial_attr.attr,
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&cpu_slabs_attr.attr,
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&ctor_attr.attr,
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&aliases_attr.attr,
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&align_attr.attr,
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#ifdef CONFIG_SLUB_DEBUG
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&sanity_checks_attr.attr,
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&trace_attr.attr,
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#endif
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&hwcache_align_attr.attr,
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&reclaim_account_attr.attr,
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&destroy_by_rcu_attr.attr,
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#ifdef CONFIG_SLUB_DEBUG
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&red_zone_attr.attr,
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&poison_attr.attr,
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&store_user_attr.attr,
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&validate_attr.attr,
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#endif
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&shrink_attr.attr,
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#ifdef CONFIG_SLUB_DEBUG
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&alloc_calls_attr.attr,
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&free_calls_attr.attr,
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#endif
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#ifdef CONFIG_ZONE_DMA
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&cache_dma_attr.attr,
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#endif
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@ -4608,7 +4638,7 @@ static int __init slab_sysfs_init(void)
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}
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__initcall(slab_sysfs_init);
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#endif
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#endif /* CONFIG_SYSFS */
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/*
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* The /proc/slabinfo ABI
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