forked from mirrors/linux
d19af0e936
Avoid inlining all and everything from alloc_cache.h and move cold bits into a new file. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de> Link: https://lore.kernel.org/r/06984c6cd58e703f7cfae5ab3067912f9f635a06.1738087204.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
71 lines
1.6 KiB
C
71 lines
1.6 KiB
C
#ifndef IOU_ALLOC_CACHE_H
|
|
#define IOU_ALLOC_CACHE_H
|
|
|
|
#include <linux/io_uring_types.h>
|
|
|
|
/*
|
|
* Don't allow the cache to grow beyond this size.
|
|
*/
|
|
#define IO_ALLOC_CACHE_MAX 128
|
|
|
|
void io_alloc_cache_free(struct io_alloc_cache *cache,
|
|
void (*free)(const void *));
|
|
bool io_alloc_cache_init(struct io_alloc_cache *cache,
|
|
unsigned max_nr, unsigned int size,
|
|
unsigned int init_bytes);
|
|
|
|
void *io_cache_alloc_new(struct io_alloc_cache *cache, gfp_t gfp);
|
|
|
|
static inline void io_alloc_cache_kasan(struct iovec **iov, int *nr)
|
|
{
|
|
if (IS_ENABLED(CONFIG_KASAN)) {
|
|
kfree(*iov);
|
|
*iov = NULL;
|
|
*nr = 0;
|
|
}
|
|
}
|
|
|
|
static inline bool io_alloc_cache_put(struct io_alloc_cache *cache,
|
|
void *entry)
|
|
{
|
|
if (cache->nr_cached < cache->max_cached) {
|
|
if (!kasan_mempool_poison_object(entry))
|
|
return false;
|
|
cache->entries[cache->nr_cached++] = entry;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static inline void *io_alloc_cache_get(struct io_alloc_cache *cache)
|
|
{
|
|
if (cache->nr_cached) {
|
|
void *entry = cache->entries[--cache->nr_cached];
|
|
|
|
/*
|
|
* If KASAN is enabled, always clear the initial bytes that
|
|
* must be zeroed post alloc, in case any of them overlap
|
|
* with KASAN storage.
|
|
*/
|
|
#if defined(CONFIG_KASAN)
|
|
kasan_mempool_unpoison_object(entry, cache->elem_size);
|
|
if (cache->init_clear)
|
|
memset(entry, 0, cache->init_clear);
|
|
#endif
|
|
return entry;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static inline void *io_cache_alloc(struct io_alloc_cache *cache, gfp_t gfp)
|
|
{
|
|
void *obj;
|
|
|
|
obj = io_alloc_cache_get(cache);
|
|
if (obj)
|
|
return obj;
|
|
return io_cache_alloc_new(cache, gfp);
|
|
}
|
|
|
|
#endif
|