ARM: perf: make name of arm_pmu_type consistent

Commit f12482c9 ("ARM: 6974/1: pmu: refactor reservation") changed
{release,reserve}_pmu to take an enum arm_pmu_type as a parameter, but
inconsistently named the parameter `type' or `device'. It would be nice
if these were consistent.

This patch makes use of enum arm_pmu_type consistent, always using
`type'. Related printks are updated, explicitly mentioning `type' also.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

arch/arm/include/asm/pmu.h

@@ -41,7 +41,7 @@ struct arm_pmu_platdata {
  * encoded error on failure.
  */
 extern struct platform_device *
-reserve_pmu(enum arm_pmu_type device);
+reserve_pmu(enum arm_pmu_type type);
 
 /**
  * release_pmu() - Relinquish control of the performance counters
@@ -62,26 +62,26 @@ release_pmu(enum arm_pmu_type type);
  * the actual hardware initialisation.
  */
 extern int
-init_pmu(enum arm_pmu_type device);
+init_pmu(enum arm_pmu_type type);
 
 #else /* CONFIG_CPU_HAS_PMU */
 
 #include <linux/err.h>
 
 static inline struct platform_device *
-reserve_pmu(enum arm_pmu_type device)
+reserve_pmu(enum arm_pmu_type type)
 {
 	return ERR_PTR(-ENODEV);
 }
 
 static inline int
-release_pmu(enum arm_pmu_type device)
+release_pmu(enum arm_pmu_type type)
 {
 	return -ENODEV;
 }
 
 static inline int
-init_pmu(enum arm_pmu_type device)
+init_pmu(enum arm_pmu_type type)
 {
 	return -ENODEV;
 }

arch/arm/kernel/pmu.c

@@ -31,7 +31,7 @@ static int __devinit pmu_register(struct platform_device *pdev,
 {
 	if (type < 0 || type >= ARM_NUM_PMU_DEVICES) {
 		pr_warning("received registration request for unknown "
-				"device %d\n", type);
+				"PMU device type %d\n", type);
 		return -EINVAL;
 	}
 
@@ -112,17 +112,17 @@ static int __init register_pmu_driver(void)
 device_initcall(register_pmu_driver);
 
 struct platform_device *
-reserve_pmu(enum arm_pmu_type device)
+reserve_pmu(enum arm_pmu_type type)
 {
 	struct platform_device *pdev;
 
-	if (test_and_set_bit_lock(device, &pmu_lock)) {
+	if (test_and_set_bit_lock(type, &pmu_lock)) {
 		pdev = ERR_PTR(-EBUSY);
-	} else if (pmu_devices[device] == NULL) {
-		clear_bit_unlock(device, &pmu_lock);
+	} else if (pmu_devices[type] == NULL) {
+		clear_bit_unlock(type, &pmu_lock);
 		pdev = ERR_PTR(-ENODEV);
 	} else {
-		pdev = pmu_devices[device];
+		pdev = pmu_devices[type];
 	}
 
 	return pdev;
@@ -130,11 +130,11 @@ reserve_pmu(enum arm_pmu_type device)
 EXPORT_SYMBOL_GPL(reserve_pmu);
 
 int
-release_pmu(enum arm_pmu_type device)
+release_pmu(enum arm_pmu_type type)
 {
-	if (WARN_ON(!pmu_devices[device]))
+	if (WARN_ON(!pmu_devices[type]))
 		return -EINVAL;
-	clear_bit_unlock(device, &pmu_lock);
+	clear_bit_unlock(type, &pmu_lock);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(release_pmu);
@@ -182,17 +182,17 @@ init_cpu_pmu(void)
 }
 
 int
-init_pmu(enum arm_pmu_type device)
+init_pmu(enum arm_pmu_type type)
 {
 	int err = 0;
 
-	switch (device) {
+	switch (type) {
 	case ARM_PMU_DEVICE_CPU:
 		err = init_cpu_pmu();
 		break;
 	default:
-		pr_warning("attempt to initialise unknown device %d\n",
-				device);
+		pr_warning("attempt to initialise PMU of unknown "
+			   "type %d\n", type);
 		err = -EINVAL;
 	}