Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933176Ab2EQKP1 (ORCPT ); Thu, 17 May 2012 06:15:27 -0400 Received: from mail-pz0-f46.google.com ([209.85.210.46]:58823 "EHLO mail-pz0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761445Ab2EQKPZ (ORCPT ); Thu, 17 May 2012 06:15:25 -0400 From: Yong Zhang To: linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org Cc: ralf@linux-mips.org, david.daney@cavium.com, tglx@linutronix.de Subject: [PATCH -rt] MIPS: Octeon: convert smp_reserve_lock to raw spinlock Date: Thu, 17 May 2012 18:15:09 +0800 Message-Id: <1337249709-7346-1-git-send-email-yong.zhang0@gmail.com> X-Mailer: git-send-email 1.7.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1349 Lines: 49 From: Yong Zhang Because __cpu_disable is called in atomic context and spinlock is a mutex on -rt. Signed-off-by: Yong Zhang --- arch/mips/cavium-octeon/smp.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/mips/cavium-octeon/smp.c b/arch/mips/cavium-octeon/smp.c index ef9c34a..473c72b 100644 --- a/arch/mips/cavium-octeon/smp.c +++ b/arch/mips/cavium-octeon/smp.c @@ -257,7 +257,7 @@ DEFINE_PER_CPU(int, cpu_state); extern void fixup_irqs(void); -static DEFINE_SPINLOCK(smp_reserve_lock); +static DEFINE_RAW_SPINLOCK(smp_reserve_lock); static int octeon_cpu_disable(void) { @@ -266,7 +266,7 @@ static int octeon_cpu_disable(void) if (cpu == 0) return -EBUSY; - spin_lock(&smp_reserve_lock); + raw_spin_lock(&smp_reserve_lock); set_cpu_online(cpu, false); cpu_clear(cpu, cpu_callin_map); @@ -277,7 +277,7 @@ static int octeon_cpu_disable(void) flush_cache_all(); local_flush_tlb_all(); - spin_unlock(&smp_reserve_lock); + raw_spin_unlock(&smp_reserve_lock); return 0; } -- 1.7.1 -- 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/