From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-Id: <20090318124845.179144118@de.ibm.com> References: <20090318124829.637003183@de.ibm.com> Date: Wed, 18 Mar 2009 13:48:31 +0100 From: Martin Schwidefsky Subject: [patch 2/6] topology: define SD_MC_INIT to fix performance regression Content-Disposition: inline; filename=002-sd-mc-init.diff Sender: linux-kernel-owner@vger.kernel.org List-Archive: List-Post: To: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Cc: Heiko Carstens , Martin Schwidefsky List-ID: From: Heiko Carstens The default values for SD_MC_INIT cause an additional cpu usage of up to 40% on some network benchmarks compared to the plain SD_CPU_INIT values. So just define SD_MC_INIT to SD_CPU_INIT. More tuning needs to be done. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/topology.h | 2 ++ 1 file changed, 2 insertions(+) Index: quilt-2.6/arch/s390/include/asm/topology.h =================================================================== --- quilt-2.6.orig/arch/s390/include/asm/topology.h +++ quilt-2.6/arch/s390/include/asm/topology.h @@ -30,6 +30,8 @@ static inline void s390_init_cpu_topolog }; #endif +#define SD_MC_INIT SD_CPU_INIT + #include #endif /* _ASM_S390_TOPOLOGY_H */ -- blue skies, Martin. "Reality continues to ruin my life." - Calvin.