From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: [PATCH] powerpc: Allow smp_call_function_single() to current cpu Date: Thu, 19 Jul 2007 18:33:48 +0300 Message-ID: <11848592284075-git-send-email-avi@qumranet.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org, linuxppc-dev-mnsaURCQ41sdnm+yROfE0A@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: paulus-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org This removes the requirement for callers to get_cpu() to check in simple cases. i386 and x86_64 already received a similar treatment. Signed-off-by: Avi Kivity --- arch/powerpc/kernel/smp.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c index d577b71..087c92f 100644 --- a/arch/powerpc/kernel/smp.c +++ b/arch/powerpc/kernel/smp.c @@ -284,7 +284,7 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info, int int wait) { cpumask_t map = CPU_MASK_NONE; - int ret = -EBUSY; + int ret = 0; if (!cpu_online(cpu)) return -EINVAL; @@ -292,6 +292,11 @@ int smp_call_function_single(int cpu, void (*func) (void *info), void *info, int cpu_set(cpu, map); if (cpu != get_cpu()) ret = smp_call_function_map(func,info,nonatomic,wait,map); + else { + local_irq_disable(); + func(info); + local_irq_enable(); + } put_cpu(); return ret; } -- 1.5.2.4 ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/