Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754279AbZG2CFW (ORCPT ); Tue, 28 Jul 2009 22:05:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753206AbZG2CFV (ORCPT ); Tue, 28 Jul 2009 22:05:21 -0400 Received: from mx2.redhat.com ([66.187.237.31]:33931 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752977AbZG2CFU (ORCPT ); Tue, 28 Jul 2009 22:05:20 -0400 Date: Wed, 29 Jul 2009 04:01:40 +0200 From: Oleg Nesterov To: Andrew Morton Cc: Roland McGrath , utrace-devel@redhat.com, linux-kernel@vger.kernel.org Subject: [PATCH -mm] introduce tracehook_finish_jctl() helper Message-ID: <20090729020139.GA7381@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: 1739 Lines: 58 (textually depends on signals-tracehook_notify_jctl-change.patch) Introduce the empty inline tracehook_finish_jctl() helper called by do_signal_stop() after wakeup. Currently we lack the ability to report this state change. Also fix the comment, it should be placed before schedule(). Signed-off-by: Oleg Nesterov --- include/linux/tracehook.h | 9 +++++++++ kernel/signal.c | 2 ++ 2 files changed, 11 insertions(+) --- __UTRACE/include/linux/tracehook.h~2_FINISH_JCTL 2009-07-29 03:10:10.000000000 +0200 +++ __UTRACE/include/linux/tracehook.h 2009-07-29 03:51:42.000000000 +0200 @@ -521,6 +521,15 @@ static inline int tracehook_notify_jctl( return notify ?: (current->ptrace & PT_PTRACED) ? why : 0; } +/** + * tracehook_finish_jctl - report about return from job control stop + * + * This is called by do_signal_stop() after wakeup. + */ +static inline void tracehook_finish_jctl(void) +{ +} + #define DEATH_REAP -1 #define DEATH_DELAYED_GROUP_LEADER -2 --- __UTRACE/kernel/signal.c~2_FINISH_JCTL 2009-07-29 03:17:49.000000000 +0200 +++ __UTRACE/kernel/signal.c 2009-07-29 03:57:07.000000000 +0200 @@ -1735,12 +1735,12 @@ static int do_signal_stop(int signr) read_unlock(&tasklist_lock); } + /* Now we don't run again until woken by SIGCONT or SIGKILL */ do { schedule(); } while (try_to_freeze()); - /* - * Now we don't run again until continued. - */ + + tracehook_finish_jctl(); current->exit_code = 0; return 1; -- 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/