From mboxrd@z Thu Jan 1 00:00:00 1970 From: Colin Cross Subject: [PATCH 07/10] futex: use freezable blocking call Date: Mon, 29 Apr 2013 14:45:43 -0700 Message-ID: <1367271946-7239-8-git-send-email-ccross@android.com> References: <1367271946-7239-1-git-send-email-ccross@android.com> Return-path: Received: from mail-qc0-f202.google.com ([209.85.216.202]:64362 "EHLO mail-qc0-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759492Ab3D2Vpz (ORCPT ); Mon, 29 Apr 2013 17:45:55 -0400 Received: by mail-qc0-f202.google.com with SMTP id k26so712477qcs.1 for ; Mon, 29 Apr 2013 14:45:54 -0700 (PDT) In-Reply-To: <1367271946-7239-1-git-send-email-ccross@android.com> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , arve@android.com, Colin Cross , Darren Hart , Thomas Gleixner , Andrew Morton , Randy Dunlap , Al Viro Avoid waking up every thread sleeping in a futex_wait call during suspend and resume by calling a freezable blocking call. Signed-off-by: Colin Cross --- kernel/futex.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/futex.c b/kernel/futex.c index b26dcfc..d710fae 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -61,6 +61,7 @@ #include #include #include +#include #include @@ -1807,7 +1808,7 @@ static void futex_wait_queue_me(struct futex_hash_bucket *hb, struct futex_q *q, * is no timeout, or if it has yet to expire. */ if (!timeout || timeout->task) - schedule(); + freezable_schedule(); } __set_current_state(TASK_RUNNING); } -- 1.8.2.1