Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 22 Jul 2002 03:18:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 22 Jul 2002 03:18:15 -0400 Received: from jive.SoftHome.net ([66.54.152.27]:1411 "HELO jive.SoftHome.net") by vger.kernel.org with SMTP id ; Mon, 22 Jul 2002 03:18:15 -0400 From: irfan_hamid@softhome.net To: linux-kernel@vger.kernel.org Reply-To: irfan_hamid@softhome.net Subject: Re: cli()/sti() clarification Date: Mon, 22 Jul 2002 01:20:32 -0600 Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Originating-IP: [202.52.197.1] Message-ID: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 812 Lines: 18 Thankyou all for explaining the system call internals to me. Feel like an idiot now :) Marco Colombo: As for what I am trying to achieve, it is simply this. I need to do plot extraction from radar raw returns. The scan time for one revolution is 2.44 secs. I need to extract plots for each pi/2 radians in less than 2.44/4 secs. I have already optimized the extraction algo upto SSE2 in assembly and am running the process as realtime, but it just cant seem to cut it. So now I am going to try and block interrupts while I do the DSP. Regards, Irfan Hamid. - 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/