2 files changed, 5 insertions, 11 deletions

diff --git a/arch/mips/oprofile/common.c b/arch/mips/oprofile/common.c
index 7832ad257a14..f9eb1aba6345 100644
--- a/arch/mips/oprofile/common.c
+++ b/arch/mips/oprofile/common.c
@@ -6,6 +6,7 @@
  * Copyright (C) 2004, 2005 Ralf Baechle
  * Copyright (C) 2005 MIPS Technologies, Inc.
  */
+#include <linux/compiler.h>
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/oprofile.h>
@@ -14,9 +15,9 @@
 
 #include "op_impl.h"
 
-extern struct op_mips_model op_model_mipsxx_ops __attribute__((weak));
-extern struct op_mips_model op_model_rm9000_ops __attribute__((weak));
-extern struct op_mips_model op_model_loongson2_ops __attribute__((weak));
+extern struct op_mips_model op_model_mipsxx_ops __weak;
+extern struct op_mips_model op_model_rm9000_ops __weak;
+extern struct op_mips_model op_model_loongson2_ops __weak;
 
 static struct op_mips_model *model;
 
diff --git a/arch/mips/oprofile/op_model_loongson2.c b/arch/mips/oprofile/op_model_loongson2.c
index 475ff46712ab..29e2326b6257 100644
--- a/arch/mips/oprofile/op_model_loongson2.c
+++ b/arch/mips/oprofile/op_model_loongson2.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2009 Lemote Inc.
  * Author: Yanhua <yanh@lemote.com>
- * Author: Wu Zhangjin <wuzj@lemote.com>
+ * Author: Wu Zhangjin <wuzhangjin@gmail.com>
  *
  * This file is subject to the terms and conditions of the GNU General Public
  * License.  See the file "COPYING" in the main directory of this archive
@@ -47,8 +47,6 @@ static struct loongson2_register_config {
         int cnt1_enabled, cnt2_enabled;
 } reg;
 
-DEFINE_SPINLOCK(sample_lock);
-
 static char *oprofid = "LoongsonPerf";
 static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id);
 /* Compute all of the registers in preparation for enabling profiling.  */
@@ -115,7 +113,6 @@ static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id)
         uint64_t counter, counter1, counter2;
         struct pt_regs *regs = get_irq_regs();
         int enabled;
-        unsigned long flags;
 
         /*
          * LOONGSON2 defines two 32-bit performance counters.
@@ -136,8 +133,6 @@ static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id)
         counter1 = counter & 0xffffffff;
         counter2 = counter >> 32;
 
-        spin_lock_irqsave(&sample_lock, flags);
-
         if (counter1 & LOONGSON2_PERFCNT_OVERFLOW) {
                 if (reg.cnt1_enabled)
                         oprofile_add_sample(regs, 0);
@@ -149,8 +144,6 @@ static irqreturn_t loongson2_perfcount_handler(int irq, void *dev_id)
                 counter2 = reg.reset_counter2;
         }
 
-        spin_unlock_irqrestore(&sample_lock, flags);
-
         write_c0_perfcnt((counter2 << 32) | counter1);
 
         return IRQ_HANDLED;