Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030183AbWA3VZK (ORCPT ); Mon, 30 Jan 2006 16:25:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030184AbWA3VZK (ORCPT ); Mon, 30 Jan 2006 16:25:10 -0500 Received: from e36.co.us.ibm.com ([32.97.110.154]:37584 "EHLO e36.co.us.ibm.com") by vger.kernel.org with ESMTP id S1030182AbWA3VZG (ORCPT ); Mon, 30 Jan 2006 16:25:06 -0500 Subject: [patch 3/8] mempool - Add kmalloc allocator From: Matthew Dobson Reply-To: colpatch@us.ibm.com To: linux-kernel@vger.kernel.org Cc: penberg@cs.helsinki.fi, akpm@osdl.org References: <20060130211951.225129000@localhost.localdomain> Content-Type: text/plain Organization: IBM LTC Date: Mon, 30 Jan 2006 13:23:48 -0800 Message-Id: <1138656229.20704.3.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.4.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2534 Lines: 72 plain text document attachment (mempool-add_kmalloc_allocator.patch) Add another allocator to the common mempool code: a kmalloc/kfree allocator This will be used by the next patch in the series to replace duplicate mempool-backed kmalloc allocators in several places in the kernel. It is also very likely that there will be more users in the future. Signed-off-by: Matthew Dobson include/linux/mempool.h | 12 ++++++++++++ mm/mempool.c | 17 +++++++++++++++++ 2 files changed, 29 insertions(+) Index: linux-2.6.16-rc1-mm4+mempool_work/include/linux/mempool.h =================================================================== --- linux-2.6.16-rc1-mm4+mempool_work.orig/include/linux/mempool.h +++ linux-2.6.16-rc1-mm4+mempool_work/include/linux/mempool.h @@ -39,6 +39,18 @@ void *mempool_alloc_slab(gfp_t gfp_mask, void mempool_free_slab(void *element, void *pool_data); /* + * A mempool_alloc_t and mempool_free_t to kmalloc the amount of memory + * specified by pool_data + */ +void *mempool_kmalloc(gfp_t gfp_mask, void *pool_data); +void mempool_kfree(void *element, void *pool_data); +static inline mempool_t *mempool_create_kmalloc_pool(int min_nr, size_t size) +{ + return mempool_create(min_nr, mempool_kmalloc, mempool_kfree, + (void *) size); +} + +/* * A mempool_alloc_t and mempool_free_t for a simple page allocator that * allocates pages of the order specified by pool_data */ Index: linux-2.6.16-rc1-mm4+mempool_work/mm/mempool.c =================================================================== --- linux-2.6.16-rc1-mm4+mempool_work.orig/mm/mempool.c +++ linux-2.6.16-rc1-mm4+mempool_work/mm/mempool.c @@ -291,6 +291,23 @@ void mempool_free_slab(void *element, vo EXPORT_SYMBOL(mempool_free_slab); /* + * A commonly used alloc and free fn that kmalloc/kfrees the amount of memory + * specfied by pool_data + */ +void *mempool_kmalloc(gfp_t gfp_mask, void *pool_data) +{ + size_t size = (size_t) pool_data; + return kmalloc(size, gfp_mask); +} +EXPORT_SYMBOL(mempool_kmalloc); + +void mempool_kfree(void *element, void *pool_data) +{ + kfree(element); +} +EXPORT_SYMBOL(mempool_kfree); + +/* * A simple mempool-backed page allocator that allocates pages * of the order specified by pool_data. */ -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/