From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964879AbVLFAjH (ORCPT ); Mon, 5 Dec 2005 19:39:07 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751528AbVLFAfM (ORCPT ); Mon, 5 Dec 2005 19:35:12 -0500 Received: from 213-239-205-147.clients.your-server.de ([213.239.205.147]:34766 "EHLO mail.tglx.de") by vger.kernel.org with ESMTP id S1751542AbVLFAek (ORCPT ); Mon, 5 Dec 2005 19:34:40 -0500 Message-Id: <20051206000155.483516000@tglx.tec.linutronix.de> References: <20051206000126.589223000@tglx.tec.linutronix.de> Date: Tue, 06 Dec 2005 01:01:45 +0100 From: tglx@linutronix.de To: linux-kernel@vger.kernel.org Cc: akpm@osdl.org, rostedt@goodmis.org, johnstul@us.ibm.com, zippel@linux-m86k.org, mingo@elte.hu Subject: [patch 19/21] Switch sys_nanosleep to hrtimer Content-Disposition: inline; filename=hrtimer-convert-sys-nanosleep.patch Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org - convert sys_nanosleep() to use hrtimer_nanosleep() Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar kernel/hrtimer.c | 14 +++++++++++++ kernel/timer.c | 56 ------------------------------------------------------- 2 files changed, 14 insertions(+), 56 deletions(-) Index: linux-2.6.15-rc5/kernel/timer.c =================================================================== --- linux-2.6.15-rc5.orig/kernel/timer.c +++ linux-2.6.15-rc5/kernel/timer.c @@ -1119,62 +1119,6 @@ asmlinkage long sys_gettid(void) return current->pid; } -static long __sched nanosleep_restart(struct restart_block *restart) -{ - unsigned long expire = restart->arg0, now = jiffies; - struct timespec __user *rmtp = (struct timespec __user *) restart->arg1; - long ret; - - /* Did it expire while we handled signals? */ - if (!time_after(expire, now)) - return 0; - - expire = schedule_timeout_interruptible(expire - now); - - ret = 0; - if (expire) { - struct timespec t; - jiffies_to_timespec(expire, &t); - - ret = -ERESTART_RESTARTBLOCK; - if (rmtp && copy_to_user(rmtp, &t, sizeof(t))) - ret = -EFAULT; - /* The 'restart' block is already filled in */ - } - return ret; -} - -asmlinkage long sys_nanosleep(struct timespec __user *rqtp, struct timespec __user *rmtp) -{ - struct timespec t; - unsigned long expire; - long ret; - - if (copy_from_user(&t, rqtp, sizeof(t))) - return -EFAULT; - - if ((t.tv_nsec >= 1000000000L) || (t.tv_nsec < 0) || (t.tv_sec < 0)) - return -EINVAL; - - expire = timespec_to_jiffies(&t) + (t.tv_sec || t.tv_nsec); - expire = schedule_timeout_interruptible(expire); - - ret = 0; - if (expire) { - struct restart_block *restart; - jiffies_to_timespec(expire, &t); - if (rmtp && copy_to_user(rmtp, &t, sizeof(t))) - return -EFAULT; - - restart = ¤t_thread_info()->restart_block; - restart->fn = nanosleep_restart; - restart->arg0 = jiffies + expire; - restart->arg1 = (unsigned long) rmtp; - ret = -ERESTART_RESTARTBLOCK; - } - return ret; -} - /* * sys_sysinfo - fill in sysinfo struct */ Index: linux-2.6.15-rc5/kernel/hrtimer.c =================================================================== --- linux-2.6.15-rc5.orig/kernel/hrtimer.c +++ linux-2.6.15-rc5/kernel/hrtimer.c @@ -707,6 +707,20 @@ long hrtimer_nanosleep(struct timespec * return -ERESTART_RESTARTBLOCK; } +asmlinkage long +sys_nanosleep(struct timespec __user *rqtp, struct timespec __user *rmtp) +{ + struct timespec tu; + + if (copy_from_user(&tu, rqtp, sizeof(tu))) + return -EFAULT; + + if (!timespec_valid(&tu)) + return -EINVAL; + + return hrtimer_nanosleep(&tu, rmtp, HRTIMER_REL, CLOCK_MONOTONIC); +} + /* * Functions related to boot-time initialization: */ --