perf: Do the big rename: Performance Counters -> Performance Events

Bye-bye Performance Counters, welcome Performance Events!

In the past few months the perfcounters subsystem has grown out its
initial role of counting hardware events, and has become (and is
becoming) a much broader generic event enumeration, reporting, logging,
monitoring, analysis facility.

Naming its core object 'perf_counter' and naming the subsystem
'perfcounters' has become more and more of a misnomer. With pending
code like hw-breakpoints support the 'counter' name is less and
less appropriate.

All in one, we've decided to rename the subsystem to 'performance
events' and to propagate this rename through all fields, variables
and API names. (in an ABI compatible fashion)

The word 'event' is also a bit shorter than 'counter' - which makes
it slightly more convenient to write/handle as well.

Thanks goes to Stephane Eranian who first observed this misnomer and
suggested a rename.

User-space tooling and ABI compatibility is not affected - this patch
should be function-invariant. (Also, defconfigs were not touched to
keep the size down.)

This patch has been generated via the following script:

  FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')

  sed -i \
    -e 's/PERF_EVENT_/PERF_RECORD_/g' \
    -e 's/PERF_COUNTER/PERF_EVENT/g' \
    -e 's/perf_counter/perf_event/g' \
    -e 's/nb_counters/nb_events/g' \
    -e 's/swcounter/swevent/g' \
    -e 's/tpcounter_event/tp_event/g' \
    $FILES

  for N in $(find . -name perf_counter.[ch]); do
    M=$(echo $N | sed 's/perf_counter/perf_event/g')
    mv $N $M
  done

  FILES=$(find . -name perf_event.*)

  sed -i \
    -e 's/COUNTER_MASK/REG_MASK/g' \
    -e 's/COUNTER/EVENT/g' \
    -e 's/\<event\>/event_id/g' \
    -e 's/counter/event/g' \
    -e 's/Counter/Event/g' \
    $FILES

... to keep it as correct as possible. This script can also be
used by anyone who has pending perfcounters patches - it converts
a Linux kernel tree over to the new naming. We tried to time this
change to the point in time where the amount of pending patches
is the smallest: the end of the merge window.

Namespace clashes were fixed up in a preparatory patch - and some
stylistic fallout will be fixed up in a subsequent patch.

( NOTE: 'counters' are still the proper terminology when we deal
  with hardware registers - and these sed scripts are a bit
  over-eager in renaming them. I've undone some of that, but
  in case there's something left where 'counter' would be
  better than 'event' we can undo that on an individual basis
  instead of touching an otherwise nicely automated patch. )

Suggested-by: Stephane Eranian <eranian@google.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Paul Mackerras <paulus@samba.org>
Reviewed-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <linux-arch@vger.kernel.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

7 files changed, 178 insertions, 178 deletions

diff --git a/include/asm-generic/unistd.h b/include/asm-generic/unistd.h
index 1125e5a..d76b66a 100644
--- a/include/asm-generic/unistd.h
+++ b/include/asm-generic/unistd.h
@@ -620,8 +620,8 @@ __SYSCALL(__NR_move_pages, sys_move_pages)
 
 #define __NR_rt_tgsigqueueinfo 240
 __SYSCALL(__NR_rt_tgsigqueueinfo, sys_rt_tgsigqueueinfo)
-#define __NR_perf_counter_open 241
-__SYSCALL(__NR_perf_counter_open, sys_perf_counter_open)
+#define __NR_perf_event_open 241
+__SYSCALL(__NR_perf_event_open, sys_perf_event_open)
 
 #undef __NR_syscalls
 #define __NR_syscalls 242
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 9e7f2e8..21a6f5d 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -106,13 +106,13 @@ extern struct group_info init_groups;
 
 extern struct cred init_cred;
 
-#ifdef CONFIG_PERF_COUNTERS
-# define INIT_PERF_COUNTERS(tsk)					\
-	.perf_counter_mutex = 						\
-		 __MUTEX_INITIALIZER(tsk.perf_counter_mutex),		\
-	.perf_counter_list = LIST_HEAD_INIT(tsk.perf_counter_list),
+#ifdef CONFIG_PERF_EVENTS
+# define INIT_PERF_EVENTS(tsk)					\
+	.perf_event_mutex = 						\
+		 __MUTEX_INITIALIZER(tsk.perf_event_mutex),		\
+	.perf_event_list = LIST_HEAD_INIT(tsk.perf_event_list),
 #else
-# define INIT_PERF_COUNTERS(tsk)
+# define INIT_PERF_EVENTS(tsk)
 #endif
 
 /*
@@ -178,7 +178,7 @@ extern struct cred init_cred;
 	},								\
 	.dirties = INIT_PROP_LOCAL_SINGLE(dirties),			\
 	INIT_IDS							\
-	INIT_PERF_COUNTERS(tsk)						\
+	INIT_PERF_EVENTS(tsk)						\
 	INIT_TRACE_IRQFLAGS						\
 	INIT_LOCKDEP							\
 	INIT_FTRACE_GRAPH						\
diff --git a/include/linux/perf_counter.h b/include/linux/perf_event.h
index f648627..ae9d9ed 100644
--- a/include/linux/perf_counter.h
+++ b/include/linux/perf_event.h
@@ -1,5 +1,5 @@
 /*
- *  Performance counters:
+ *  Performance events:
  *
  *    Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de>
  *    Copyright (C) 2008-2009, Red Hat, Inc., Ingo Molnar
@@ -11,8 +11,8 @@
  *
  *  For licencing details see kernel-base/COPYING
  */
-#ifndef _LINUX_PERF_COUNTER_H
-#define _LINUX_PERF_COUNTER_H
+#ifndef _LINUX_PERF_EVENT_H
+#define _LINUX_PERF_EVENT_H
 
 #include <linux/types.h>
 #include <linux/ioctl.h>
@@ -36,8 +36,8 @@ enum perf_type_id {
 };
 
 /*
- * Generalized performance counter event types, used by the
- * attr.event_id parameter of the sys_perf_counter_open()
+ * Generalized performance event event_id types, used by the
+ * attr.event_id parameter of the sys_perf_event_open()
  * syscall:
  */
 enum perf_hw_id {
@@ -56,7 +56,7 @@ enum perf_hw_id {
 };
 
 /*
- * Generalized hardware cache counters:
+ * Generalized hardware cache events:
  *
  *       { L1-D, L1-I, LLC, ITLB, DTLB, BPU } x
  *       { read, write, prefetch } x
@@ -89,8 +89,8 @@ enum perf_hw_cache_op_result_id {
 };
 
 /*
- * Special "software" counters provided by the kernel, even if the hardware
- * does not support performance counters. These counters measure various
+ * Special "software" events provided by the kernel, even if the hardware
+ * does not support performance events. These events measure various
  * physical and sw events of the kernel (and allow the profiling of them as
  * well):
  */
@@ -110,7 +110,7 @@ enum perf_sw_ids {
  * Bits that can be set in attr.sample_type to request information
  * in the overflow packets.
  */
-enum perf_counter_sample_format {
+enum perf_event_sample_format {
 	PERF_SAMPLE_IP				= 1U << 0,
 	PERF_SAMPLE_TID				= 1U << 1,
 	PERF_SAMPLE_TIME			= 1U << 2,
@@ -127,7 +127,7 @@ enum perf_counter_sample_format {
 };
 
 /*
- * The format of the data returned by read() on a perf counter fd,
+ * The format of the data returned by read() on a perf event fd,
  * as specified by attr.read_format:
  *
  * struct read_format {
@@ -146,7 +146,7 @@ enum perf_counter_sample_format {
  * 	} && PERF_FORMAT_GROUP
  * };
  */
-enum perf_counter_read_format {
+enum perf_event_read_format {
 	PERF_FORMAT_TOTAL_TIME_ENABLED		= 1U << 0,
 	PERF_FORMAT_TOTAL_TIME_RUNNING		= 1U << 1,
 	PERF_FORMAT_ID				= 1U << 2,
@@ -158,9 +158,9 @@ enum perf_counter_read_format {
 #define PERF_ATTR_SIZE_VER0	64	/* sizeof first published struct */
 
 /*
- * Hardware event to monitor via a performance monitoring counter:
+ * Hardware event_id to monitor via a performance monitoring event:
  */
-struct perf_counter_attr {
+struct perf_event_attr {
 
 	/*
 	 * Major type: hardware/software/tracepoint/etc.
@@ -213,28 +213,28 @@ struct perf_counter_attr {
 };
 
 /*
- * Ioctls that can be done on a perf counter fd:
+ * Ioctls that can be done on a perf event fd:
  */
-#define PERF_COUNTER_IOC_ENABLE		_IO ('$', 0)
-#define PERF_COUNTER_IOC_DISABLE	_IO ('$', 1)
-#define PERF_COUNTER_IOC_REFRESH	_IO ('$', 2)
-#define PERF_COUNTER_IOC_RESET		_IO ('$', 3)
-#define PERF_COUNTER_IOC_PERIOD		_IOW('$', 4, u64)
-#define PERF_COUNTER_IOC_SET_OUTPUT	_IO ('$', 5)
-
-enum perf_counter_ioc_flags {
+#define PERF_EVENT_IOC_ENABLE		_IO ('$', 0)
+#define PERF_EVENT_IOC_DISABLE	_IO ('$', 1)
+#define PERF_EVENT_IOC_REFRESH	_IO ('$', 2)
+#define PERF_EVENT_IOC_RESET		_IO ('$', 3)
+#define PERF_EVENT_IOC_PERIOD		_IOW('$', 4, u64)
+#define PERF_EVENT_IOC_SET_OUTPUT	_IO ('$', 5)
+
+enum perf_event_ioc_flags {
 	PERF_IOC_FLAG_GROUP		= 1U << 0,
 };
 
 /*
  * Structure of the page that can be mapped via mmap
  */
-struct perf_counter_mmap_page {
+struct perf_event_mmap_page {
 	__u32	version;		/* version number of this structure */
 	__u32	compat_version;		/* lowest version this is compat with */
 
 	/*
-	 * Bits needed to read the hw counters in user-space.
+	 * Bits needed to read the hw events in user-space.
 	 *
 	 *   u32 seq;
 	 *   s64 count;
@@ -256,10 +256,10 @@ struct perf_counter_mmap_page {
 	 *       processes.
 	 */
 	__u32	lock;			/* seqlock for synchronization */
-	__u32	index;			/* hardware counter identifier */
-	__s64	offset;			/* add to hardware counter value */
-	__u64	time_enabled;		/* time counter active */
-	__u64	time_running;		/* time counter on cpu */
+	__u32	index;			/* hardware event identifier */
+	__s64	offset;			/* add to hardware event value */
+	__u64	time_enabled;		/* time event active */
+	__u64	time_running;		/* time event on cpu */
 
 		/*
 		 * Hole for extension of the self monitor capabilities
@@ -272,7 +272,7 @@ struct perf_counter_mmap_page {
 	 *
 	 * User-space reading the @data_head value should issue an rmb(), on
 	 * SMP capable platforms, after reading this value -- see
-	 * perf_counter_wakeup().
+	 * perf_event_wakeup().
 	 *
 	 * When the mapping is PROT_WRITE the @data_tail value should be
 	 * written by userspace to reflect the last read data. In this case
@@ -282,11 +282,11 @@ struct perf_counter_mmap_page {
 	__u64	data_tail;		/* user-space written tail */
 };
 
-#define PERF_EVENT_MISC_CPUMODE_MASK		(3 << 0)
-#define PERF_EVENT_MISC_CPUMODE_UNKNOWN		(0 << 0)
-#define PERF_EVENT_MISC_KERNEL			(1 << 0)
-#define PERF_EVENT_MISC_USER			(2 << 0)
-#define PERF_EVENT_MISC_HYPERVISOR		(3 << 0)
+#define PERF_RECORD_MISC_CPUMODE_MASK		(3 << 0)
+#define PERF_RECORD_MISC_CPUMODE_UNKNOWN		(0 << 0)
+#define PERF_RECORD_MISC_KERNEL			(1 << 0)
+#define PERF_RECORD_MISC_USER			(2 << 0)
+#define PERF_RECORD_MISC_HYPERVISOR		(3 << 0)
 
 struct perf_event_header {
 	__u32	type;
@@ -310,7 +310,7 @@ enum perf_event_type {
 	 *	char				filename[];
 	 * };
 	 */
-	PERF_EVENT_MMAP			= 1,
+	PERF_RECORD_MMAP			= 1,
 
 	/*
 	 * struct {
@@ -319,7 +319,7 @@ enum perf_event_type {
 	 * 	u64				lost;
 	 * };
 	 */
-	PERF_EVENT_LOST			= 2,
+	PERF_RECORD_LOST			= 2,
 
 	/*
 	 * struct {
@@ -329,7 +329,7 @@ enum perf_event_type {
 	 *	char				comm[];
 	 * };
 	 */
-	PERF_EVENT_COMM			= 3,
+	PERF_RECORD_COMM			= 3,
 
 	/*
 	 * struct {
@@ -339,7 +339,7 @@ enum perf_event_type {
 	 *	u64				time;
 	 * };
 	 */
-	PERF_EVENT_EXIT			= 4,
+	PERF_RECORD_EXIT			= 4,
 
 	/*
 	 * struct {
@@ -349,8 +349,8 @@ enum perf_event_type {
 	 *	u64				stream_id;
 	 * };
 	 */
-	PERF_EVENT_THROTTLE		= 5,
-	PERF_EVENT_UNTHROTTLE		= 6,
+	PERF_RECORD_THROTTLE		= 5,
+	PERF_RECORD_UNTHROTTLE		= 6,
 
 	/*
 	 * struct {
@@ -360,7 +360,7 @@ enum perf_event_type {
 	 *	{ u64				time;     } && PERF_SAMPLE_TIME
 	 * };
 	 */
-	PERF_EVENT_FORK			= 7,
+	PERF_RECORD_FORK			= 7,
 
 	/*
 	 * struct {
@@ -370,7 +370,7 @@ enum perf_event_type {
 	 * 	struct read_format		values;
 	 * };
 	 */
-	PERF_EVENT_READ			= 8,
+	PERF_RECORD_READ			= 8,
 
 	/*
 	 * struct {
@@ -395,7 +395,7 @@ enum perf_event_type {
 	 * 	#
 	 * 	# That is, the ABI doesn't make any promises wrt to
 	 * 	# the stability of its content, it may vary depending
-	 * 	# on event, hardware, kernel version and phase of
+	 * 	# on event_id, hardware, kernel version and phase of
 	 * 	# the moon.
 	 * 	#
 	 * 	# In other words, PERF_SAMPLE_RAW contents are not an ABI.
@@ -405,9 +405,9 @@ enum perf_event_type {
 	 *	  char                  data[size];}&& PERF_SAMPLE_RAW
 	 * };
 	 */
-	PERF_EVENT_SAMPLE		= 9,
+	PERF_RECORD_SAMPLE		= 9,
 
-	PERF_EVENT_MAX,			/* non-ABI */
+	PERF_RECORD_MAX,			/* non-ABI */
 };
 
 enum perf_callchain_context {
@@ -430,8 +430,8 @@ enum perf_callchain_context {
  * Kernel-internal data types and definitions:
  */
 
-#ifdef CONFIG_PERF_COUNTERS
-# include <asm/perf_counter.h>
+#ifdef CONFIG_PERF_EVENTS
+# include <asm/perf_event.h>
 #endif
 
 #include <linux/list.h>
@@ -459,15 +459,15 @@ struct perf_raw_record {
 struct task_struct;
 
 /**
- * struct hw_perf_counter - performance counter hardware details:
+ * struct hw_perf_event - performance event hardware details:
  */
-struct hw_perf_counter {
-#ifdef CONFIG_PERF_COUNTERS
+struct hw_perf_event {
+#ifdef CONFIG_PERF_EVENTS
 	union {
 		struct { /* hardware */
 			u64		config;
 			unsigned long	config_base;
-			unsigned long	counter_base;
+			unsigned long	event_base;
 			int		idx;
 		};
 		union { /* software */
@@ -487,26 +487,26 @@ struct hw_perf_counter {
 #endif
 };
 
-struct perf_counter;
+struct perf_event;
 
 /**
  * struct pmu - generic performance monitoring unit
  */
 struct pmu {
-	int (*enable)			(struct perf_counter *counter);
-	void (*disable)			(struct perf_counter *counter);
-	void (*read)			(struct perf_counter *counter);
-	void (*unthrottle)		(struct perf_counter *counter);
+	int (*enable)			(struct perf_event *event);
+	void (*disable)			(struct perf_event *event);
+	void (*read)			(struct perf_event *event);
+	void (*unthrottle)		(struct perf_event *event);
 };
 
 /**
- * enum perf_counter_active_state - the states of a counter
+ * enum perf_event_active_state - the states of a event
  */
-enum perf_counter_active_state {
-	PERF_COUNTER_STATE_ERROR	= -2,
-	PERF_COUNTER_STATE_OFF		= -1,
-	PERF_COUNTER_STATE_INACTIVE	=  0,
-	PERF_COUNTER_STATE_ACTIVE	=  1,
+enum perf_event_active_state {
+	PERF_EVENT_STATE_ERROR	= -2,
+	PERF_EVENT_STATE_OFF		= -1,
+	PERF_EVENT_STATE_INACTIVE	=  0,
+	PERF_EVENT_STATE_ACTIVE	=  1,
 };
 
 struct file;
@@ -518,7 +518,7 @@ struct perf_mmap_data {
 	int				nr_locked;	/* nr pages mlocked  */
 
 	atomic_t			poll;		/* POLL_ for wakeups */
-	atomic_t			events;		/* event limit       */
+	atomic_t			events;		/* event_id limit       */
 
 	atomic_long_t			head;		/* write position    */
 	atomic_long_t			done_head;	/* completed head    */
@@ -529,7 +529,7 @@ struct perf_mmap_data {
 
 	long				watermark;	/* wakeup watermark  */
 
-	struct perf_counter_mmap_page   *user_page;
+	struct perf_event_mmap_page   *user_page;
 	void				*data_pages[0];
 };
 
@@ -539,56 +539,56 @@ struct perf_pending_entry {
 };
 
 /**
- * struct perf_counter - performance counter kernel representation:
+ * struct perf_event - performance event kernel representation:
  */
-struct perf_counter {
-#ifdef CONFIG_PERF_COUNTERS
+struct perf_event {
+#ifdef CONFIG_PERF_EVENTS
 	struct list_head		group_entry;
 	struct list_head		event_entry;
 	struct list_head		sibling_list;
 	int				nr_siblings;
-	struct perf_counter		*group_leader;
-	struct perf_counter		*output;
+	struct perf_event		*group_leader;
+	struct perf_event		*output;
 	const struct pmu		*pmu;
 
-	enum perf_counter_active_state	state;
+	enum perf_event_active_state	state;
 	atomic64_t			count;
 
 	/*
-	 * These are the total time in nanoseconds that the counter
+	 * These are the total time in nanoseconds that the event
 	 * has been enabled (i.e. eligible to run, and the task has
-	 * been scheduled in, if this is a per-task counter)
+	 * been scheduled in, if this is a per-task event)
 	 * and running (scheduled onto the CPU), respectively.
 	 *
 	 * They are computed from tstamp_enabled, tstamp_running and
-	 * tstamp_stopped when the counter is in INACTIVE or ACTIVE state.
+	 * tstamp_stopped when the event is in INACTIVE or ACTIVE state.
 	 */
 	u64				total_time_enabled;
 	u64				total_time_running;
 
 	/*
 	 * These are timestamps used for computing total_time_enabled
-	 * and total_time_running when the counter is in INACTIVE or
+	 * and total_time_running when the event is in INACTIVE or
 	 * ACTIVE state, measured in nanoseconds from an arbitrary point
 	 * in time.
-	 * tstamp_enabled: the notional time when the counter was enabled
-	 * tstamp_running: the notional time when the counter was scheduled on
+	 * tstamp_enabled: the notional time when the event was enabled
+	 * tstamp_running: the notional time when the event was scheduled on
 	 * tstamp_stopped: in INACTIVE state, the notional time when the
-	 *	counter was scheduled off.
+	 *	event was scheduled off.
 	 */
 	u64				tstamp_enabled;
 	u64				tstamp_running;
 	u64				tstamp_stopped;
 
-	struct perf_counter_attr	attr;
-	struct hw_perf_counter		hw;
+	struct perf_event_attr	attr;
+	struct hw_perf_event		hw;
 
-	struct perf_counter_context	*ctx;
+	struct perf_event_context	*ctx;
 	struct file			*filp;
 
 	/*
 	 * These accumulate total time (in nanoseconds) that children
-	 * counters have been enabled and running, respectively.
+	 * events have been enabled and running, respectively.
 	 */
 	atomic64_t			child_total_time_enabled;
 	atomic64_t			child_total_time_running;
@@ -598,7 +598,7 @@ struct perf_counter {
 	 */
 	struct mutex			child_mutex;
 	struct list_head		child_list;
-	struct perf_counter		*parent;
+	struct perf_event		*parent;
 
 	int				oncpu;
 	int				cpu;
@@ -623,7 +623,7 @@ struct perf_counter {
 
 	atomic_t			event_limit;
 
-	void (*destroy)(struct perf_counter *);
+	void (*destroy)(struct perf_event *);
 	struct rcu_head			rcu_head;
 
 	struct pid_namespace		*ns;
@@ -632,18 +632,18 @@ struct perf_counter {
 };
 
 /**
- * struct perf_counter_context - counter context structure
+ * struct perf_event_context - event context structure
  *
- * Used as a container for task counters and CPU counters as well:
+ * Used as a container for task events and CPU events as well:
  */
-struct perf_counter_context {
+struct perf_event_context {
 	/*
-	 * Protect the states of the counters in the list,
+	 * Protect the states of the events in the list,
 	 * nr_active, and the list:
 	 */
 	spinlock_t			lock;
 	/*
-	 * Protect the list of counters.  Locking either mutex or lock
+	 * Protect the list of events.  Locking either mutex or lock
 	 * is sufficient to ensure the list doesn't change; to change
 	 * the list you need to lock both the mutex and the spinlock.
 	 */
@@ -651,7 +651,7 @@ struct perf_counter_context {
 
 	struct list_head		group_list;
 	struct list_head		event_list;
-	int				nr_counters;
+	int				nr_events;
 	int				nr_active;
 	int				is_active;
 	int				nr_stat;
@@ -668,7 +668,7 @@ struct perf_counter_context {
 	 * These fields let us detect when two contexts have both
 	 * been cloned (inherited) from a common ancestor.
 	 */
-	struct perf_counter_context	*parent_ctx;
+	struct perf_event_context	*parent_ctx;
 	u64				parent_gen;
 	u64				generation;
 	int				pin_count;
@@ -676,11 +676,11 @@ struct perf_counter_context {
 };
 
 /**
- * struct perf_counter_cpu_context - per cpu counter context structure
+ * struct perf_event_cpu_context - per cpu event context structure
  */
 struct perf_cpu_context {
-	struct perf_counter_context	ctx;
-	struct perf_counter_context	*task_ctx;
+	struct perf_event_context	ctx;
+	struct perf_event_context	*task_ctx;
 	int				active_oncpu;
 	int				max_pertask;
 	int				exclusive;
@@ -694,7 +694,7 @@ struct perf_cpu_context {
 };
 
 struct perf_output_handle {
-	struct perf_counter	*counter;
+	struct perf_event	*event;
 	struct perf_mmap_data	*data;
 	unsigned long		head;
 	unsigned long		offset;
@@ -704,35 +704,35 @@ struct perf_output_handle {
 	unsigned long		flags;
 };
 
-#ifdef CONFIG_PERF_COUNTERS
+#ifdef CONFIG_PERF_EVENTS
 
 /*
  * Set by architecture code:
  */
-extern int perf_max_counters;
+extern int perf_max_events;
 
-extern const struct pmu *hw_perf_counter_init(struct perf_counter *counter);
+extern const struct pmu *hw_perf_event_init(struct perf_event *event);
 
-extern void perf_counter_task_sched_in(struct task_struct *task, int cpu);
-extern void perf_counter_task_sched_out(struct task_struct *task,
+extern void perf_event_task_sched_in(struct task_struct *task, int cpu);
+extern void perf_event_task_sched_out(struct task_struct *task,
 					struct task_struct *next, int cpu);
-extern void perf_counter_task_tick(struct task_struct *task, int cpu);
-extern int perf_counter_init_task(struct task_struct *child);
-extern void perf_counter_exit_task(struct task_struct *child);
-extern void perf_counter_free_task(struct task_struct *task);
-extern void set_perf_counter_pending(void);
-extern void perf_counter_do_pending(void);
-extern void perf_counter_print_debug(void);
+extern void perf_event_task_tick(struct task_struct *task, int cpu);
+extern int perf_event_init_task(struct task_struct *child);
+extern void perf_event_exit_task(struct task_struct *child);
+extern void perf_event_free_task(struct task_struct *task);
+extern void set_perf_event_pending(void);
+extern void perf_event_do_pending(void);
+extern void perf_event_print_debug(void);
 extern void __perf_disable(void);
 extern bool __perf_enable(void);
 extern void perf_disable(void);
 extern void perf_enable(void);
-extern int perf_counter_task_disable(void);
-extern int perf_counter_task_enable(void);
-extern int hw_perf_group_sched_in(struct perf_counter *group_leader,
+extern int perf_event_task_disable(void);
+extern int perf_event_task_enable(void);
+extern int hw_perf_group_sched_in(struct perf_event *group_leader,
 	       struct perf_cpu_context *cpuctx,
-	       struct perf_counter_context *ctx, int cpu);
-extern void perf_counter_update_userpage(struct perf_counter *counter);
+	       struct perf_event_context *ctx, int cpu);
+extern void perf_event_update_userpage(struct perf_event *event);
 
 struct perf_sample_data {
 	u64				type;
@@ -758,96 +758,96 @@ struct perf_sample_data {
 extern void perf_output_sample(struct perf_output_handle *handle,
 			       struct perf_event_header *header,
 			       struct perf_sample_data *data,
-			       struct perf_counter *counter);
+			       struct perf_event *event);
 extern void perf_prepare_sample(struct perf_event_header *header,
 				struct perf_sample_data *data,
-				struct perf_counter *counter,
+				struct perf_event *event,
 				struct pt_regs *regs);
 
-extern int perf_counter_overflow(struct perf_counter *counter, int nmi,
+extern int perf_event_overflow(struct perf_event *event, int nmi,
 				 struct perf_sample_data *data,
 				 struct pt_regs *regs);
 
 /*
- * Return 1 for a software counter, 0 for a hardware counter
+ * Return 1 for a software event, 0 for a hardware event
  */
-static inline int is_software_counter(struct perf_counter *counter)
+static inline int is_software_event(struct perf_event *event)
 {
-	return (counter->attr.type != PERF_TYPE_RAW) &&
-		(counter->attr.type != PERF_TYPE_HARDWARE) &&
-		(counter->attr.type != PERF_TYPE_HW_CACHE);
+	return (event->attr.type != PERF_TYPE_RAW) &&
+		(event->attr.type != PERF_TYPE_HARDWARE) &&
+		(event->attr.type != PERF_TYPE_HW_CACHE);
 }
 
-extern atomic_t perf_swcounter_enabled[PERF_COUNT_SW_MAX];
+extern atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX];
 
-extern void __perf_swcounter_event(u32, u64, int, struct pt_regs *, u64);
+extern void __perf_sw_event(u32, u64, int, struct pt_regs *, u64);
 
 static inline void
-perf_swcounter_event(u32 event, u64 nr, int nmi, struct pt_regs *regs, u64 addr)
+perf_sw_event(u32 event_id, u64 nr, int nmi, struct pt_regs *regs, u64 addr)
 {
-	if (atomic_read(&perf_swcounter_enabled[event]))
-		__perf_swcounter_event(event, nr, nmi, regs, addr);
+	if (atomic_read(&perf_swevent_enabled[event_id]))
+		__perf_sw_event(event_id, nr, nmi, regs, addr);
 }
 
-extern void __perf_counter_mmap(struct vm_area_struct *vma);
+extern void __perf_event_mmap(struct vm_area_struct *vma);
 
-static inline void perf_counter_mmap(struct vm_area_struct *vma)
+static inline void perf_event_mmap(struct vm_area_struct *vma)
 {
 	if (vma->vm_flags & VM_EXEC)
-		__perf_counter_mmap(vma);
+		__perf_event_mmap(vma);
 }
 
-extern void perf_counter_comm(struct task_struct *tsk);
-extern void perf_counter_fork(struct task_struct *tsk);
+extern void perf_event_comm(struct task_struct *tsk);
+extern void perf_event_fork(struct task_struct *tsk);
 
 extern struct perf_callchain_entry *perf_callchain(struct pt_regs *regs);
 
-extern int sysctl_perf_counter_paranoid;
-extern int sysctl_perf_counter_mlock;
-extern int sysctl_perf_counter_sample_rate;
+extern int sysctl_perf_event_paranoid;
+extern int sysctl_perf_event_mlock;
+extern int sysctl_perf_event_sample_rate;
 
-extern void perf_counter_init(void);
-extern void perf_tpcounter_event(int event_id, u64 addr, u64 count,
+extern void perf_event_init(void);
+extern void perf_tp_event(int event_id, u64 addr, u64 count,
 				 void *record, int entry_size);
 
 #ifndef perf_misc_flags
-#define perf_misc_flags(regs)	(user_mode(regs) ? PERF_EVENT_MISC_USER : \
-				 PERF_EVENT_MISC_KERNEL)
+#define perf_misc_flags(regs)	(user_mode(regs) ? PERF_RECORD_MISC_USER : \
+				 PERF_RECORD_MISC_KERNEL)
 #define perf_instruction_pointer(regs)	instruction_pointer(regs)
 #endif
 
 extern int perf_output_begin(struct perf_output_handle *handle,
-			     struct perf_counter *counter, unsigned int size,
+			     struct perf_event *event, unsigned int size,
 			     int nmi, int sample);
 extern void perf_output_end(struct perf_output_handle *handle);
 extern void perf_output_copy(struct perf_output_handle *handle,
 			     const void *buf, unsigned int len);
 #else
 static inline void
-perf_counter_task_sched_in(struct task_struct *task, int cpu)		{ }
+perf_event_task_sched_in(struct task_struct *task, int cpu)		{ }
 static inline void
-perf_counter_task_sched_out(struct task_struct *task,
+perf_event_task_sched_out(struct task_struct *task,
 			    struct task_struct *next, int cpu)		{ }
 static inline void
-perf_counter_task_tick(struct task_struct *task, int cpu)		{ }
-static inline int perf_counter_init_task(struct task_struct *child)	{ return 0; }
-static inline void perf_counter_exit_task(struct task_struct *child)	{ }
-static inline void perf_counter_free_task(struct task_struct *task)	{ }
-static inline void perf_counter_do_pending(void)			{ }
-static inline void perf_counter_print_debug(void)			{ }
+perf_event_task_tick(struct task_struct *task, int cpu)		{ }
+static inline int perf_event_init_task(struct task_struct *child)	{ return 0; }
+static inline void perf_event_exit_task(struct task_struct *child)	{ }
+static inline void perf_event_free_task(struct task_struct *task)	{ }
+static inline void perf_event_do_pending(void)			{ }
+static inline void perf_event_print_debug(void)			{ }
 static inline void perf_disable(void)					{ }
 static inline void perf_enable(void)					{ }
-static inline int perf_counter_task_disable(void)	{ return -EINVAL; }
-static inline int perf_counter_task_enable(void)	{ return -EINVAL; }
+static inline int perf_event_task_disable(void)	{ return -EINVAL; }
+static inline int perf_event_task_enable(void)	{ return -EINVAL; }
 
 static inline void
-perf_swcounter_event(u32 event, u64 nr, int nmi,
+perf_sw_event(u32 event_id, u64 nr, int nmi,
 		     struct pt_regs *regs, u64 addr)			{ }
 
-static inline void perf_counter_mmap(struct vm_area_struct *vma)	{ }
-static inline void perf_counter_comm(struct task_struct *tsk)		{ }
-static inline void perf_counter_fork(struct task_struct *tsk)		{ }
-static inline void perf_counter_init(void)				{ }
+static inline void perf_event_mmap(struct vm_area_struct *vma)	{ }
+static inline void perf_event_comm(struct task_struct *tsk)		{ }
+static inline void perf_event_fork(struct task_struct *tsk)		{ }
+static inline void perf_event_init(void)				{ }
 
 #endif
 
@@ -855,4 +855,4 @@ static inline void perf_counter_init(void)				{ }
 	perf_output_copy((handle), &(x), sizeof(x))
 
 #endif /* __KERNEL__ */
-#endif /* _LINUX_PERF_COUNTER_H */
+#endif /* _LINUX_PERF_EVENT_H */
diff --git a/include/linux/prctl.h b/include/linux/prctl.h
index b00df4c..07bff66 100644
--- a/include/linux/prctl.h
+++ b/include/linux/prctl.h
@@ -85,7 +85,7 @@
 #define PR_SET_TIMERSLACK 29
 #define PR_GET_TIMERSLACK 30
 
-#define PR_TASK_PERF_COUNTERS_DISABLE		31
-#define PR_TASK_PERF_COUNTERS_ENABLE		32
+#define PR_TASK_PERF_EVENTS_DISABLE		31
+#define PR_TASK_PERF_EVENTS_ENABLE		32
 
 #endif /* _LINUX_PRCTL_H */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 8af3d24..8b265a8 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -100,7 +100,7 @@ struct robust_list_head;
 struct bio;
 struct fs_struct;
 struct bts_context;
-struct perf_counter_context;
+struct perf_event_context;
 
 /*
  * List of flags we want to share for kernel threads,
@@ -701,7 +701,7 @@ struct user_struct {
 #endif
 #endif
 
-#ifdef CONFIG_PERF_COUNTERS
+#ifdef CONFIG_PERF_EVENTS
 	atomic_long_t locked_vm;
 #endif
 };
@@ -1449,10 +1449,10 @@ struct task_struct {
 	struct list_head pi_state_list;
 	struct futex_pi_state *pi_state_cache;
 #endif
-#ifdef CONFIG_PERF_COUNTERS
-	struct perf_counter_context *perf_counter_ctxp;
-	struct mutex perf_counter_mutex;
-	struct list_head perf_counter_list;
+#ifdef CONFIG_PERF_EVENTS
+	struct perf_event_context *perf_event_ctxp;
+	struct mutex perf_event_mutex;
+	struct list_head perf_event_list;
 #endif
 #ifdef CONFIG_NUMA
 	struct mempolicy *mempolicy;	/* Protected by alloc_lock */
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index a8e3782..02f19f9 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -55,7 +55,7 @@ struct compat_timeval;
 struct robust_list_head;
 struct getcpu_cache;
 struct old_linux_dirent;
-struct perf_counter_attr;
+struct perf_event_attr;
 
 #include <linux/types.h>
 #include <linux/aio_abi.h>
@@ -885,7 +885,7 @@ asmlinkage long sys_ppoll(struct pollfd __user *, unsigned int,
 int kernel_execve(const char *filename, char *const argv[], char *const envp[]);
 
 
-asmlinkage long sys_perf_counter_open(
-		struct perf_counter_attr __user *attr_uptr,
+asmlinkage long sys_perf_event_open(
+		struct perf_event_attr __user *attr_uptr,
 		pid_t pid, int cpu, int group_fd, unsigned long flags);
 #endif
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 72a3b43..ec91e78 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -378,7 +378,7 @@ static inline int ftrace_get_offsets_##call(				\
 #ifdef CONFIG_EVENT_PROFILE
 
 /*
- * Generate the functions needed for tracepoint perf_counter support.
+ * Generate the functions needed for tracepoint perf_event support.
  *
  * NOTE: The insertion profile callback (ftrace_profile_<call>) is defined later
  *
@@ -656,7 +656,7 @@ __attribute__((section("_ftrace_events"))) event_##call = {		\
  * {
  *	struct ftrace_data_offsets_<call> __maybe_unused __data_offsets;
  *	struct ftrace_event_call *event_call = &event_<call>;
- *	extern void perf_tpcounter_event(int, u64, u64, void *, int);
+ *	extern void perf_tp_event(int, u64, u64, void *, int);
  *	struct ftrace_raw_##call *entry;
  *	u64 __addr = 0, __count = 1;
  *	unsigned long irq_flags;
@@ -691,7 +691,7 @@ __attribute__((section("_ftrace_events"))) event_##call = {		\
  *
  *		<assign>  <- affect our values
  *
- *		perf_tpcounter_event(event_call->id, __addr, __count, entry,
+ *		perf_tp_event(event_call->id, __addr, __count, entry,
  *			     __entry_size);  <- submit them to perf counter
  *	} while (0);
  *
@@ -712,7 +712,7 @@ static void ftrace_profile_##call(proto)				\
 {									\
 	struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
 	struct ftrace_event_call *event_call = &event_##call;		\
-	extern void perf_tpcounter_event(int, u64, u64, void *, int);	\
+	extern void perf_tp_event(int, u64, u64, void *, int);	\
 	struct ftrace_raw_##call *entry;				\
 	u64 __addr = 0, __count = 1;					\
 	unsigned long irq_flags;					\
@@ -742,7 +742,7 @@ static void ftrace_profile_##call(proto)				\
 									\
 		{ assign; }						\
 									\
-		perf_tpcounter_event(event_call->id, __addr, __count, entry,\
+		perf_tp_event(event_call->id, __addr, __count, entry,\
 			     __entry_size);				\
 	} while (0);							\
 									\