#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)
{
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);
{
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;
}
struct op_arm_model_spec *spec = NULL;
int ret = -ENODEV;
+ ops->backtrace = arm_backtrace;
+
#ifdef CONFIG_CPU_XSCALE
spec = &op_xscale_spec;
#endif
- if (spec) {
- init_MUTEX(&op_arm_sem);
+#ifdef CONFIG_OPROFILE_ARMV6
+ spec = &op_armv6_spec;
+#endif
+
+#ifdef CONFIG_OPROFILE_MPCORE
+ spec = &op_mpcore_spec;
+#endif
+ if (spec) {
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;
ops->start = op_arm_start;
ops->stop = op_arm_stop;
ops->cpu_type = op_arm_model->name;
- ops->backtrace = arm_backtrace;
printk(KERN_INFO "oprofile: using %s\n", spec->name);
}
exit_driverfs();
op_arm_model = NULL;
}
+ kfree(counter_config);
}
-