korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-11 04:18:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

slab: pull kmem_cache_open() into do_kmem_cache_create()

Browse Source 
do_kmem_cache_create() is the only caller and we're going to pass down
struct kmem_cache_args in a follow-up patch.

Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
This commit is contained in:
Christian Brauner 2024-09-05 09:56:50 +02:00 committed by Vlastimil Babka
parent 34410a9060
commit fc0eac57d0
1 changed files with 62 additions and 70 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

132
mm/slub.c
View File

@ -5290,65 +5290,6 @@ static int calculate_sizes(struct kmem_cache *s)
return !!oo_objects(s->oo);
}
static int kmem_cache_open(struct kmem_cache *s, slab_flags_t flags)
{
s->flags = kmem_cache_flags(flags, s->name);
#ifdef CONFIG_SLAB_FREELIST_HARDENED
s->random = get_random_long();
#endif
if (!calculate_sizes(s))
goto error;
if (disable_higher_order_debug) {
/*
* Disable debugging flags that store metadata if the min slab
* order increased.
*/
if (get_order(s->size) > get_order(s->object_size)) {
s->flags &= ~DEBUG_METADATA_FLAGS;
s->offset = 0;
if (!calculate_sizes(s))
goto error;
}
}
#ifdef system_has_freelist_aba
if (system_has_freelist_aba() && !(s->flags & SLAB_NO_CMPXCHG)) {
/* Enable fast mode */
s->flags |= __CMPXCHG_DOUBLE;
}
#endif
/*
* The larger the object size is, the more slabs we want on the partial
* list to avoid pounding the page allocator excessively.
*/
s->min_partial = min_t(unsigned long, MAX_PARTIAL, ilog2(s->size) / 2);
s->min_partial = max_t(unsigned long, MIN_PARTIAL, s->min_partial);
set_cpu_partial(s);
#ifdef CONFIG_NUMA
s->remote_node_defrag_ratio = 1000;
#endif
/* Initialize the pre-computed randomized freelist if slab is up */
if (slab_state >= UP) {
if (init_cache_random_seq(s))
goto error;
}
if (!init_kmem_cache_nodes(s))
goto error;
if (alloc_kmem_cache_cpus(s))
return 0;
error:
__kmem_cache_release(s);
return -EINVAL;
}
static void list_slab_objects(struct kmem_cache *s, struct slab *slab,
const char *text)
{
@ -5904,26 +5845,77 @@ __kmem_cache_alias(const char *name, unsigned int size, unsigned int align,
int do_kmem_cache_create(struct kmem_cache *s, slab_flags_t flags)
{
int err;
int err = -EINVAL;
err = kmem_cache_open(s, flags);
if (err)
return err;
s->flags = kmem_cache_flags(flags, s->name);
#ifdef CONFIG_SLAB_FREELIST_HARDENED
s->random = get_random_long();
#endif
if (!calculate_sizes(s))
goto out;
if (disable_higher_order_debug) {
/*
* Disable debugging flags that store metadata if the min slab
* order increased.
*/
if (get_order(s->size) > get_order(s->object_size)) {
s->flags &= ~DEBUG_METADATA_FLAGS;
s->offset = 0;
if (!calculate_sizes(s))
goto out;
}
}
#ifdef system_has_freelist_aba
if (system_has_freelist_aba() && !(s->flags & SLAB_NO_CMPXCHG)) {
/* Enable fast mode */
s->flags |= __CMPXCHG_DOUBLE;
}
#endif
/*
* The larger the object size is, the more slabs we want on the partial
* list to avoid pounding the page allocator excessively.
*/
s->min_partial = min_t(unsigned long, MAX_PARTIAL, ilog2(s->size) / 2);
s->min_partial = max_t(unsigned long, MIN_PARTIAL, s->min_partial);
set_cpu_partial(s);
#ifdef CONFIG_NUMA
s->remote_node_defrag_ratio = 1000;
#endif
/* Initialize the pre-computed randomized freelist if slab is up */
if (slab_state >= UP) {
if (init_cache_random_seq(s))
goto out;
}
if (!init_kmem_cache_nodes(s))
goto out;
if (!alloc_kmem_cache_cpus(s))
goto out;
/* Mutex is not taken during early boot */
if (slab_state <= UP)
return 0;
if (slab_state <= UP) {
err = 0;
goto out;
}
err = sysfs_slab_add(s);
if (err) {
__kmem_cache_release(s);
return err;
}
if (err)
goto out;
if (s->flags & SLAB_STORE_USER)
debugfs_slab_add(s);
return 0;
out:
if (err)
__kmem_cache_release(s);
return err;
}
#ifdef SLAB_SUPPORTS_SYSFS