Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757828AbZCARKj (ORCPT ); Sun, 1 Mar 2009 12:10:39 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756798AbZCARKa (ORCPT ); Sun, 1 Mar 2009 12:10:30 -0500 Received: from ns.suse.de ([195.135.220.2]:46513 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756725AbZCARK3 (ORCPT ); Sun, 1 Mar 2009 12:10:29 -0500 Message-ID: <49AAC180.9000707@suse.de> Date: Sun, 01 Mar 2009 18:10:24 +0100 From: Frank Seidel User-Agent: Thunderbird 2.0.0.19 (X11/20081227) MIME-Version: 1.0 To: linux kernel Cc: akpm@linux-foundation.org, kkeil@suse.de, linux-isdn@vger.kernel.org, Frank Seidel , =?ISO-8859-1?Q?Ilpo_J=E4rvinen?= , Andreas Eversberg , Hannes Eder , Adrian Bunk , Frank Seidel Subject: [PATCHv2] isdn: reduce stack size of mISDN_dsp References: <49AAB8B2.8060801@suse.de> In-Reply-To: <49AAB8B2.8060801@suse.de> X-Enigmail-Version: 0.95.7 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1285 Lines: 51 From: Frank Seidel Reduce stack size memory footprint of mISDN_dsp. (From 1468 bytes for dsp_cmx_send on i386 down to 44). Signed-off-by: Frank Seidel --- drivers/isdn/mISDN/dsp_cmx.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) --- a/drivers/isdn/mISDN/dsp_cmx.c +++ b/drivers/isdn/mISDN/dsp_cmx.c @@ -1592,13 +1592,21 @@ dsp_cmx_send(void *arg) struct dsp_conf_member *member; struct dsp *dsp; int mustmix, members; - s32 mixbuffer[MAX_POLL+100], *c; + s32 *mixbuffer; + s32 *c; u8 *p, *q; int r, rr; int jittercheck = 0, delay, i; u_long flags; u16 length, count; + mixbuffer = kmalloc(sizeof(*mixbuffer) * (MAX_POLL + 100), GFP_KERNEL); + if (!mixbuffer) { + printk(KERN_ERR "mISDN_dsp: cannot allocate buffer(%s)\n", + __func__); + return; + } + /* lock */ spin_lock_irqsave(&dsp_lock, flags); @@ -1811,6 +1819,8 @@ dsp_cmx_send(void *arg) /* unlock */ spin_unlock_irqrestore(&dsp_lock, flags); + + kfree(mixbuffer); } /* -- 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/