diff options
Diffstat (limited to 'arch/arm/oprofile/common.c')
| -rw-r--r-- | arch/arm/oprofile/common.c | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/arch/arm/oprofile/common.c b/arch/arm/oprofile/common.c index 6f8bc1f0e6a..6f833358cd0 100644 --- a/arch/arm/oprofile/common.c +++ b/arch/arm/oprofile/common.c @@ -10,17 +10,18 @@ #include <linux/init.h> #include <linux/oprofile.h> #include <linux/errno.h> +#include <linux/slab.h> #include <linux/sysdev.h> -#include <asm/semaphore.h> +#include <linux/mutex.h> #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]; +struct op_counter_config *counter_config; static int op_arm_create_files(struct super_block *sb, struct dentry *root) { @@ -28,7 +29,7 @@ static int op_arm_create_files(struct super_block *sb, struct dentry *root) for (i = 0; i < op_arm_model->num_counters; i++) { struct dentry *dir; - char buf[2]; + char buf[4]; snprintf(buf, sizeof buf, "%d", i); dir = oprofilefs_mkdir(sb, root, buf); @@ -57,40 +58,40 @@ 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; } @@ -135,12 +136,15 @@ 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; + counter_config = kcalloc(spec->num_counters, sizeof(struct op_counter_config), + GFP_KERNEL); + if (!counter_config) + return -ENOMEM; + op_arm_model = spec; init_driverfs(); ops->create_files = op_arm_create_files; @@ -162,5 +166,5 @@ void oprofile_arch_exit(void) exit_driverfs(); op_arm_model = NULL; } + kfree(counter_config); } - |