From 93ad79496c8831552d5f8ca7c182f149cc3cf19a Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 16 Mar 2006 11:38:16 +0000 Subject: [ARM] Oprofile: Convert semaphore to mutex op_arm_sem is being used as a mutex, so convert it to use real mutexes. Signed-off-by: Russell King --- arch/arm/oprofile/common.c | 23 ++++++++++------------- 1 file changed, 10 insertions(+), 13 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/oprofile/common.c b/arch/arm/oprofile/common.c index 6f8bc1f0e6a1..b57b6d11c9fb 100644 --- a/arch/arm/oprofile/common.c +++ b/arch/arm/oprofile/common.c @@ -11,14 +11,14 @@ #include #include #include -#include +#include #include "op_counter.h" #include "op_arm_model.h" static struct op_arm_model_spec *op_arm_model; static int op_arm_enabled; -static struct semaphore op_arm_sem; +static DEFINE_MUTEX(op_arm_mutex); struct op_counter_config counter_config[OP_MAX_COUNTER]; @@ -57,40 +57,40 @@ static int op_arm_start(void) { int ret = -EBUSY; - down(&op_arm_sem); + mutex_lock(&op_arm_mutex); if (!op_arm_enabled) { ret = op_arm_model->start(); op_arm_enabled = !ret; } - up(&op_arm_sem); + mutex_unlock(&op_arm_mutex); return ret; } static void op_arm_stop(void) { - down(&op_arm_sem); + mutex_lock(&op_arm_mutex); if (op_arm_enabled) op_arm_model->stop(); op_arm_enabled = 0; - up(&op_arm_sem); + mutex_unlock(&op_arm_mutex); } #ifdef CONFIG_PM static int op_arm_suspend(struct sys_device *dev, pm_message_t state) { - down(&op_arm_sem); + mutex_lock(&op_arm_mutex); if (op_arm_enabled) op_arm_model->stop(); - up(&op_arm_sem); + mutex_unlock(&op_arm_mutex); return 0; } static int op_arm_resume(struct sys_device *dev) { - down(&op_arm_sem); + mutex_lock(&op_arm_mutex); if (op_arm_enabled && op_arm_model->start()) op_arm_enabled = 0; - up(&op_arm_sem); + mutex_unlock(&op_arm_mutex); return 0; } @@ -135,8 +135,6 @@ int __init oprofile_arch_init(struct oprofile_operations *ops) #endif if (spec) { - init_MUTEX(&op_arm_sem); - ret = spec->init(); if (ret < 0) return ret; @@ -163,4 +161,3 @@ void oprofile_arch_exit(void) op_arm_model = NULL; } } - -- cgit v1.2.3