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-rw-r--r--arch/arm/oprofile/common.c34
-rw-r--r--arch/arm/oprofile/op_counter.h2
2 files changed, 20 insertions, 16 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);
}
-
diff --git a/arch/arm/oprofile/op_counter.h b/arch/arm/oprofile/op_counter.h
index 153c1d467f2..8c5351d751c 100644
--- a/arch/arm/oprofile/op_counter.h
+++ b/arch/arm/oprofile/op_counter.h
@@ -24,6 +24,6 @@ struct op_counter_config {
unsigned long user;
};
-extern struct op_counter_config counter_config[];
+extern struct op_counter_config *counter_config;
#endif /* OP_COUNTER_H */