Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753601AbZLAWLo (ORCPT ); Tue, 1 Dec 2009 17:11:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753402AbZLAWLo (ORCPT ); Tue, 1 Dec 2009 17:11:44 -0500 Received: from mx1.redhat.com ([209.132.183.28]:34332 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753406AbZLAWLn (ORCPT ); Tue, 1 Dec 2009 17:11:43 -0500 Date: Tue, 1 Dec 2009 23:10:36 +0100 From: Veaceslav Falico To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , Al Viro , Miloslav Trmac , James Morris , Alan Cox , Ingo Molnar , Peter Zijlstra , Andrew Morton , Balbir Singh , Alexey Dobriyan , Heiko Carstens , Renaud Lottiaux , Louis Rilling , David Howells , Oleg Nesterov Subject: [PATCH 1/4] copy_signal cleanup: use zalloc and remove initializations Message-ID: <20091201221036.GA10052@darkmag.usersys.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2734 Lines: 76 Use kmem_cache_zalloc() on signal creation and remove unneeded initialization lines. Signed-off-by: Veaceslav Falico --- diff --git a/kernel/fork.c b/kernel/fork.c index 166b8c4..160477d 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -825,17 +825,6 @@ static void posix_cpu_timers_init_group(struct signal_struct *sig) /* Thread group counters. */ thread_group_cputime_init(sig); - /* Expiration times and increments. */ - sig->it[CPUCLOCK_PROF].expires = cputime_zero; - sig->it[CPUCLOCK_PROF].incr = cputime_zero; - sig->it[CPUCLOCK_VIRT].expires = cputime_zero; - sig->it[CPUCLOCK_VIRT].incr = cputime_zero; - - /* Cached expiration times. */ - sig->cputime_expires.prof_exp = cputime_zero; - sig->cputime_expires.virt_exp = cputime_zero; - sig->cputime_expires.sched_exp = 0; - if (sig->rlim[RLIMIT_CPU].rlim_cur != RLIM_INFINITY) { sig->cputime_expires.prof_exp = secs_to_cputime(sig->rlim[RLIMIT_CPU].rlim_cur); @@ -855,7 +844,7 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk) if (clone_flags & CLONE_THREAD) return 0; - sig = kmem_cache_alloc(signal_cachep, GFP_KERNEL); + sig = kmem_cache_zalloc(signal_cachep, GFP_KERNEL); tsk->signal = sig; if (!sig) return -ENOMEM; @@ -863,33 +852,16 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk) atomic_set(&sig->count, 1); atomic_set(&sig->live, 1); init_waitqueue_head(&sig->wait_chldexit); - sig->flags = 0; if (clone_flags & CLONE_NEWPID) sig->flags |= SIGNAL_UNKILLABLE; - sig->group_exit_code = 0; - sig->group_exit_task = NULL; - sig->group_stop_count = 0; sig->curr_target = tsk; init_sigpending(&sig->shared_pending); INIT_LIST_HEAD(&sig->posix_timers); hrtimer_init(&sig->real_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); - sig->it_real_incr.tv64 = 0; sig->real_timer.function = it_real_fn; - sig->leader = 0; /* session leadership doesn't inherit */ - sig->tty_old_pgrp = NULL; - sig->tty = NULL; - - sig->utime = sig->stime = sig->cutime = sig->cstime = cputime_zero; - sig->gtime = cputime_zero; - sig->cgtime = cputime_zero; - sig->nvcsw = sig->nivcsw = sig->cnvcsw = sig->cnivcsw = 0; - sig->min_flt = sig->maj_flt = sig->cmin_flt = sig->cmaj_flt = 0; - sig->inblock = sig->oublock = sig->cinblock = sig->coublock = 0; - sig->maxrss = sig->cmaxrss = 0; task_io_accounting_init(&sig->ioac); - sig->sum_sched_runtime = 0; taskstats_tgid_init(sig); task_lock(current->group_leader); -- 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/