Merge ../bleed-2.6

1 files changed, 97 insertions, 88 deletions

diff --git a/arch/arm/oprofile/common.c b/arch/arm/oprofile/common.c
index e57dde882898..1415930ceee1 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;
         }
 }