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Diffstat (limited to 'arch/arm/oprofile/common.c')
-rw-r--r--arch/arm/oprofile/common.c185
1 files changed, 97 insertions, 88 deletions
diff --git a/arch/arm/oprofile/common.c b/arch/arm/oprofile/common.c
index e57dde88289..1415930ceee 100644
--- a/arch/arm/oprofile/common.c
+++ b/arch/arm/oprofile/common.c
@@ -10,74 +10,23 @@
#include <linux/init.h>
#include <linux/oprofile.h>
#include <linux/errno.h>
-#include <asm/semaphore.h>
#include <linux/sysdev.h>
+#include <asm/semaphore.h>
#include "op_counter.h"
#include "op_arm_model.h"
-static struct op_arm_model_spec *pmu_model;
-static int pmu_enabled;
-static struct semaphore pmu_sem;
-
-static int pmu_start(void);
-static int pmu_setup(void);
-static void pmu_stop(void);
-static int pmu_create_files(struct super_block *, struct dentry *);
-
-#ifdef CONFIG_PM
-static int pmu_suspend(struct sys_device *dev, pm_message_t state)
-{
- if (pmu_enabled)
- pmu_stop();
- return 0;
-}
-
-static int pmu_resume(struct sys_device *dev)
-{
- if (pmu_enabled)
- pmu_start();
- return 0;
-}
-
-static struct sysdev_class oprofile_sysclass = {
- set_kset_name("oprofile"),
- .resume = pmu_resume,
- .suspend = pmu_suspend,
-};
-
-static struct sys_device device_oprofile = {
- .id = 0,
- .cls = &oprofile_sysclass,
-};
-
-static int __init init_driverfs(void)
-{
- int ret;
-
- if (!(ret = sysdev_class_register(&oprofile_sysclass)))
- ret = sysdev_register(&device_oprofile);
-
- return ret;
-}
-
-static void exit_driverfs(void)
-{
- sysdev_unregister(&device_oprofile);
- sysdev_class_unregister(&oprofile_sysclass);
-}
-#else
-#define init_driverfs() do { } while (0)
-#define exit_driverfs() do { } while (0)
-#endif /* CONFIG_PM */
+static struct op_arm_model_spec *op_arm_model;
+static int op_arm_enabled;
+static struct semaphore op_arm_sem;
struct op_counter_config counter_config[OP_MAX_COUNTER];
-static int pmu_create_files(struct super_block *sb, struct dentry *root)
+static int op_arm_create_files(struct super_block *sb, struct dentry *root)
{
unsigned int i;
- for (i = 0; i < pmu_model->num_counters; i++) {
+ for (i = 0; i < op_arm_model->num_counters; i++) {
struct dentry *dir;
char buf[2];
@@ -94,63 +43,123 @@ static int pmu_create_files(struct super_block *sb, struct dentry *root)
return 0;
}
-static int pmu_setup(void)
+static int op_arm_setup(void)
{
int ret;
spin_lock(&oprofilefs_lock);
- ret = pmu_model->setup_ctrs();
+ ret = op_arm_model->setup_ctrs();
spin_unlock(&oprofilefs_lock);
return ret;
}
-static int pmu_start(void)
+static int op_arm_start(void)
{
int ret = -EBUSY;
- down(&pmu_sem);
- if (!pmu_enabled) {
- ret = pmu_model->start();
- pmu_enabled = !ret;
+ down(&op_arm_sem);
+ if (!op_arm_enabled) {
+ ret = op_arm_model->start();
+ op_arm_enabled = !ret;
}
- up(&pmu_sem);
+ up(&op_arm_sem);
return ret;
}
-static void pmu_stop(void)
+static void op_arm_stop(void)
+{
+ down(&op_arm_sem);
+ if (op_arm_enabled)
+ op_arm_model->stop();
+ op_arm_enabled = 0;
+ up(&op_arm_sem);
+}
+
+#ifdef CONFIG_PM
+static int op_arm_suspend(struct sys_device *dev, pm_message_t state)
{
- down(&pmu_sem);
- if (pmu_enabled)
- pmu_model->stop();
- pmu_enabled = 0;
- up(&pmu_sem);
+ down(&op_arm_sem);
+ if (op_arm_enabled)
+ op_arm_model->stop();
+ up(&op_arm_sem);
+ return 0;
}
-int __init pmu_init(struct oprofile_operations *ops, struct op_arm_model_spec *spec)
+static int op_arm_resume(struct sys_device *dev)
{
- init_MUTEX(&pmu_sem);
+ down(&op_arm_sem);
+ if (op_arm_enabled && op_arm_model->start())
+ op_arm_enabled = 0;
+ up(&op_arm_sem);
+ return 0;
+}
+
+static struct sysdev_class oprofile_sysclass = {
+ set_kset_name("oprofile"),
+ .resume = op_arm_resume,
+ .suspend = op_arm_suspend,
+};
- if (spec->init() < 0)
- return -ENODEV;
+static struct sys_device device_oprofile = {
+ .id = 0,
+ .cls = &oprofile_sysclass,
+};
- pmu_model = spec;
- init_driverfs();
- ops->create_files = pmu_create_files;
- ops->setup = pmu_setup;
- ops->shutdown = pmu_stop;
- ops->start = pmu_start;
- ops->stop = pmu_stop;
- ops->cpu_type = pmu_model->name;
- printk(KERN_INFO "oprofile: using %s PMU\n", spec->name);
+static int __init init_driverfs(void)
+{
+ int ret;
- return 0;
+ if (!(ret = sysdev_class_register(&oprofile_sysclass)))
+ ret = sysdev_register(&device_oprofile);
+
+ return ret;
+}
+
+static void exit_driverfs(void)
+{
+ sysdev_unregister(&device_oprofile);
+ sysdev_class_unregister(&oprofile_sysclass);
+}
+#else
+#define init_driverfs() do { } while (0)
+#define exit_driverfs() do { } while (0)
+#endif /* CONFIG_PM */
+
+int __init oprofile_arch_init(struct oprofile_operations *ops)
+{
+ struct op_arm_model_spec *spec = NULL;
+ int ret = -ENODEV;
+
+#ifdef CONFIG_CPU_XSCALE
+ spec = &op_xscale_spec;
+#endif
+
+ if (spec) {
+ init_MUTEX(&op_arm_sem);
+
+ if (spec->init() < 0)
+ return -ENODEV;
+
+ op_arm_model = spec;
+ init_driverfs();
+ ops->create_files = op_arm_create_files;
+ ops->setup = op_arm_setup;
+ ops->shutdown = op_arm_stop;
+ 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);
+ }
+
+ return ret;
}
-void pmu_exit(void)
+void oprofile_arch_exit(void)
{
- if (pmu_model) {
+ if (op_arm_model) {
exit_driverfs();
- pmu_model = NULL;
+ op_arm_model = NULL;
}
}