From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754904Ab2EUPqM (ORCPT ); Mon, 21 May 2012 11:46:12 -0400 Received: from e06smtp15.uk.ibm.com ([195.75.94.111]:38207 "EHLO e06smtp15.uk.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751055Ab2EUPqJ (ORCPT ); Mon, 21 May 2012 11:46:09 -0400 From: Martin Schwidefsky To: Peter Zijlstra , Ingo Molnar , Mike Galbraith , linux-kernel@vger.kernel.org Cc: Heiko Carstens , Christian Ehrhardt , Martin Schwidefsky Subject: [PATCH 2/2] sched: enable FAIR_SLEEPERS for s390 Date: Mon, 21 May 2012 17:45:37 +0200 Message-Id: <1337615137-55111-3-git-send-email-schwidefsky@de.ibm.com> X-Mailer: git-send-email 1.7.10.2 In-Reply-To: <1337615137-55111-1-git-send-email-schwidefsky@de.ibm.com> References: <1337615137-55111-1-git-send-email-schwidefsky@de.ibm.com> x-cbid: 12052115-0342-0000-0000-000001C2497E Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For s390 the performance benefit that comes with the ability to disable fair sleepers is more important than the saved branch on the hot path of the scheduler. Therefore enable CONFIG_SCHED_FAIR_SLEEPERS. Reported-by: Christian Ehrhardt Signed-off-by: Martin Schwidefsky --- arch/s390/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 9015060..d5746d8 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -122,6 +122,7 @@ config S390 select ARCH_INLINE_WRITE_UNLOCK_BH select ARCH_INLINE_WRITE_UNLOCK_IRQ select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE + select SCHED_FAIR_SLEEPERS config SCHED_OMIT_FRAME_POINTER def_bool y -- 1.7.10.2