20  * 16 32 64 96 128 196 256 512 1024 2048 4096
23  * 16 32 64 96 128 196 256 512 1024 2048 4096
47 	5,	/* 64 */
312  * the freelist cache will be elem_size * 64 (or less) on each cpu.
318  * 64*16 + 64*32 + 64*64 + 64*96 + 64*128 + 64*196 + 64*256 + 32*512 + 16*1024 + 8*2048 + 4*4096
357 int bpf_mem_alloc_init(struct bpf_mem_alloc *ma, int size, bool percpu)  in bpf_mem_alloc_init()  argument
359 	static u16 sizes[NUM_CACHES] = {96, 192, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096};  in bpf_mem_alloc_init()
387 		ma->cache = pc;  in bpf_mem_alloc_init()
410 	ma->caches = pcc;  in bpf_mem_alloc_init()
435 static void free_mem_alloc_no_barrier(struct bpf_mem_alloc *ma)  in free_mem_alloc_no_barrier()  argument
437 	free_percpu(ma->cache);  in free_mem_alloc_no_barrier()
438 	free_percpu(ma->caches);  in free_mem_alloc_no_barrier()
439 	ma->cache = NULL;  in free_mem_alloc_no_barrier()
440 	ma->caches = NULL;  in free_mem_alloc_no_barrier()
443 static void free_mem_alloc(struct bpf_mem_alloc *ma)  in free_mem_alloc()  argument
450 	free_mem_alloc_no_barrier(ma);  in free_mem_alloc()
455 	struct bpf_mem_alloc *ma = container_of(work, struct bpf_mem_alloc, work);  in free_mem_alloc_deferred()  local
457 	free_mem_alloc(ma);  in free_mem_alloc_deferred()
458 	kfree(ma);  in free_mem_alloc_deferred()
461 static void destroy_mem_alloc(struct bpf_mem_alloc *ma, int rcu_in_progress)  in destroy_mem_alloc()  argument
469 		free_mem_alloc_no_barrier(ma);  in destroy_mem_alloc()
473 	copy = kmalloc(sizeof(*ma), GFP_KERNEL);  in destroy_mem_alloc()
476 		free_mem_alloc(ma);  in destroy_mem_alloc()
481 	copy->cache = ma->cache;  in destroy_mem_alloc()
482 	ma->cache = NULL;  in destroy_mem_alloc()
483 	copy->caches = ma->caches;  in destroy_mem_alloc()
484 	ma->caches = NULL;  in destroy_mem_alloc()
489 void bpf_mem_alloc_destroy(struct bpf_mem_alloc *ma)  in bpf_mem_alloc_destroy()  argument
495 	if (ma->cache) {  in bpf_mem_alloc_destroy()
498 			c = per_cpu_ptr(ma->cache, cpu);  in bpf_mem_alloc_destroy()
515 		destroy_mem_alloc(ma, rcu_in_progress);  in bpf_mem_alloc_destroy()
517 	if (ma->caches) {  in bpf_mem_alloc_destroy()
520 			cc = per_cpu_ptr(ma->caches, cpu);  in bpf_mem_alloc_destroy()
530 		destroy_mem_alloc(ma, rcu_in_progress);  in bpf_mem_alloc_destroy()
605 void notrace *bpf_mem_alloc(struct bpf_mem_alloc *ma, size_t size)  in bpf_mem_alloc()  argument
617 	ret = unit_alloc(this_cpu_ptr(ma->caches)->cache + idx);  in bpf_mem_alloc()
621 void notrace bpf_mem_free(struct bpf_mem_alloc *ma, void *ptr)  in bpf_mem_free()  argument
632 	unit_free(this_cpu_ptr(ma->caches)->cache + idx, ptr);  in bpf_mem_free()
635 void notrace *bpf_mem_cache_alloc(struct bpf_mem_alloc *ma)  in bpf_mem_cache_alloc()  argument
639 	ret = unit_alloc(this_cpu_ptr(ma->cache));  in bpf_mem_cache_alloc()
643 void notrace bpf_mem_cache_free(struct bpf_mem_alloc *ma, void *ptr)  in bpf_mem_cache_free()  argument
648 	unit_free(this_cpu_ptr(ma->cache), ptr);  in bpf_mem_cache_free()