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>

10 files changed, 1249 insertions, 1249 deletions

diff --git a/kernel/Makefile b/kernel/Makefile
index 3d9c7e27e3f9..e26a546eac44 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -96,7 +96,7 @@ obj-$(CONFIG_X86_DS) += trace/
 obj-$(CONFIG_RING_BUFFER) += trace/
 obj-$(CONFIG_SMP) += sched_cpupri.o
 obj-$(CONFIG_SLOW_WORK) += slow-work.o
-obj-$(CONFIG_PERF_COUNTERS) += perf_counter.o
+obj-$(CONFIG_PERF_EVENTS) += perf_event.o
 
 ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y)
 # According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is
diff --git a/kernel/exit.c b/kernel/exit.c
index ae5d8660ddff..e47ee8a06135 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -47,7 +47,7 @@
 #include <linux/tracehook.h>
 #include <linux/fs_struct.h>
 #include <linux/init_task.h>
-#include <linux/perf_counter.h>
+#include <linux/perf_event.h>
 #include <trace/events/sched.h>
 
 #include <asm/uaccess.h>
@@ -154,8 +154,8 @@ static void delayed_put_task_struct(struct rcu_head *rhp)
 {
         struct task_struct *tsk = container_of(rhp, struct task_struct, rcu);
 
-#ifdef CONFIG_PERF_COUNTERS
-        WARN_ON_ONCE(tsk->perf_counter_ctxp);
+#ifdef CONFIG_PERF_EVENTS
+        WARN_ON_ONCE(tsk->perf_event_ctxp);
 #endif
         trace_sched_process_free(tsk);
         put_task_struct(tsk);
@@ -981,7 +981,7 @@ NORET_TYPE void do_exit(long code)
          * Flush inherited counters to the parent - before the parent
          * gets woken up by child-exit notifications.
          */
-        perf_counter_exit_task(tsk);
+        perf_event_exit_task(tsk);
 
         exit_notify(tsk, group_dead);
 #ifdef CONFIG_NUMA
diff --git a/kernel/fork.c b/kernel/fork.c
index bfee931ee3fb..2cebfb23b0b8 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -61,7 +61,7 @@
 #include <linux/blkdev.h>
 #include <linux/fs_struct.h>
 #include <linux/magic.h>
-#include <linux/perf_counter.h>
+#include <linux/perf_event.h>
 
 #include <asm/pgtable.h>
 #include <asm/pgalloc.h>
@@ -1078,7 +1078,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
         /* Perform scheduler related setup. Assign this task to a CPU. */
         sched_fork(p, clone_flags);
 
-        retval = perf_counter_init_task(p);
+        retval = perf_event_init_task(p);
         if (retval)
                 goto bad_fork_cleanup_policy;
 
@@ -1253,7 +1253,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
         write_unlock_irq(&tasklist_lock);
         proc_fork_connector(p);
         cgroup_post_fork(p);
-        perf_counter_fork(p);
+        perf_event_fork(p);
         return p;
 
 bad_fork_free_pid:
@@ -1280,7 +1280,7 @@ bad_fork_cleanup_semundo:
 bad_fork_cleanup_audit:
         audit_free(p);
 bad_fork_cleanup_policy:
-        perf_counter_free_task(p);
+        perf_event_free_task(p);
 #ifdef CONFIG_NUMA
         mpol_put(p->mempolicy);
 bad_fork_cleanup_cgroup:
diff --git a/kernel/perf_counter.c b/kernel/perf_event.c
index 62de0db8092b..6e8b99a04e1e 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_event.c
@@ -1,5 +1,5 @@
 /*
- * Performance counter core code
+ * Performance event core code
  *
  *  Copyright (C) 2008 Thomas Gleixner <tglx@linutronix.de>
  *  Copyright (C) 2008-2009 Red Hat, Inc., Ingo Molnar
@@ -26,66 +26,66 @@
 #include <linux/syscalls.h>
 #include <linux/anon_inodes.h>
 #include <linux/kernel_stat.h>
-#include <linux/perf_counter.h>
+#include <linux/perf_event.h>
 
 #include <asm/irq_regs.h>
 
 /*
- * Each CPU has a list of per CPU counters:
+ * Each CPU has a list of per CPU events:
  */
 DEFINE_PER_CPU(struct perf_cpu_context, perf_cpu_context);
 
-int perf_max_counters __read_mostly = 1;
+int perf_max_events __read_mostly = 1;
 static int perf_reserved_percpu __read_mostly;
 static int perf_overcommit __read_mostly = 1;
 
-static atomic_t nr_counters __read_mostly;
-static atomic_t nr_mmap_counters __read_mostly;
-static atomic_t nr_comm_counters __read_mostly;
-static atomic_t nr_task_counters __read_mostly;
+static atomic_t nr_events __read_mostly;
+static atomic_t nr_mmap_events __read_mostly;
+static atomic_t nr_comm_events __read_mostly;
+static atomic_t nr_task_events __read_mostly;
 
 /*
- * perf counter paranoia level:
+ * perf event paranoia level:
  *  -1 - not paranoid at all
  *   0 - disallow raw tracepoint access for unpriv
- *   1 - disallow cpu counters for unpriv
+ *   1 - disallow cpu events for unpriv
  *   2 - disallow kernel profiling for unpriv
  */
-int sysctl_perf_counter_paranoid __read_mostly = 1;
+int sysctl_perf_event_paranoid __read_mostly = 1;
 
 static inline bool perf_paranoid_tracepoint_raw(void)
 {
-        return sysctl_perf_counter_paranoid > -1;
+        return sysctl_perf_event_paranoid > -1;
 }
 
 static inline bool perf_paranoid_cpu(void)
 {
-        return sysctl_perf_counter_paranoid > 0;
+        return sysctl_perf_event_paranoid > 0;
 }
 
 static inline bool perf_paranoid_kernel(void)
 {
-        return sysctl_perf_counter_paranoid > 1;
+        return sysctl_perf_event_paranoid > 1;
 }
 
-int sysctl_perf_counter_mlock __read_mostly = 512; /* 'free' kb per user */
+int sysctl_perf_event_mlock __read_mostly = 512; /* 'free' kb per user */
 
 /*
- * max perf counter sample rate
+ * max perf event sample rate
  */
-int sysctl_perf_counter_sample_rate __read_mostly = 100000;
+int sysctl_perf_event_sample_rate __read_mostly = 100000;
 
-static atomic64_t perf_counter_id;
+static atomic64_t perf_event_id;
 
 /*
- * Lock for (sysadmin-configurable) counter reservations:
+ * Lock for (sysadmin-configurable) event reservations:
  */
 static DEFINE_SPINLOCK(perf_resource_lock);
 
 /*
  * Architecture provided APIs - weak aliases:
  */
-extern __weak const struct pmu *hw_perf_counter_init(struct perf_counter *counter)
+extern __weak const struct pmu *hw_perf_event_init(struct perf_event *event)
 {
         return NULL;
 }
@@ -93,18 +93,18 @@ extern __weak const struct pmu *hw_perf_counter_init(struct perf_counter *counte
 void __weak hw_perf_disable(void)               { barrier(); }
 void __weak hw_perf_enable(void)                { barrier(); }
 
-void __weak hw_perf_counter_setup(int cpu)      { barrier(); }
-void __weak hw_perf_counter_setup_online(int cpu)       { barrier(); }
+void __weak hw_perf_event_setup(int cpu)        { barrier(); }
+void __weak hw_perf_event_setup_online(int cpu) { barrier(); }
 
 int __weak
-hw_perf_group_sched_in(struct perf_counter *group_leader,
+hw_perf_group_sched_in(struct perf_event *group_leader,
                struct perf_cpu_context *cpuctx,
-               struct perf_counter_context *ctx, int cpu)
+               struct perf_event_context *ctx, int cpu)
 {
         return 0;
 }
 
-void __weak perf_counter_print_debug(void)      { }
+void __weak perf_event_print_debug(void)        { }
 
 static DEFINE_PER_CPU(int, perf_disable_count);
 
@@ -130,20 +130,20 @@ void perf_enable(void)
                 hw_perf_enable();
 }
 
-static void get_ctx(struct perf_counter_context *ctx)
+static void get_ctx(struct perf_event_context *ctx)
 {
         WARN_ON(!atomic_inc_not_zero(&ctx->refcount));
 }
 
 static void free_ctx(struct rcu_head *head)
 {
-        struct perf_counter_context *ctx;
+        struct perf_event_context *ctx;
 
-        ctx = container_of(head, struct perf_counter_context, rcu_head);
+        ctx = container_of(head, struct perf_event_context, rcu_head);
         kfree(ctx);
 }
 
-static void put_ctx(struct perf_counter_context *ctx)
+static void put_ctx(struct perf_event_context *ctx)
 {
         if (atomic_dec_and_test(&ctx->refcount)) {
                 if (ctx->parent_ctx)
@@ -154,7 +154,7 @@ static void put_ctx(struct perf_counter_context *ctx)
         }
 }
 
-static void unclone_ctx(struct perf_counter_context *ctx)
+static void unclone_ctx(struct perf_event_context *ctx)
 {
         if (ctx->parent_ctx) {
                 put_ctx(ctx->parent_ctx);
@@ -163,37 +163,37 @@ static void unclone_ctx(struct perf_counter_context *ctx)
 }
 
 /*
- * If we inherit counters we want to return the parent counter id
+ * If we inherit events we want to return the parent event id
  * to userspace.
  */
-static u64 primary_counter_id(struct perf_counter *counter)
+static u64 primary_event_id(struct perf_event *event)
 {
-        u64 id = counter->id;
+        u64 id = event->id;
 
-        if (counter->parent)
-                id = counter->parent->id;
+        if (event->parent)
+                id = event->parent->id;
 
         return id;
 }
 
 /*
- * Get the perf_counter_context for a task and lock it.
+ * Get the perf_event_context for a task and lock it.
  * This has to cope with with the fact that until it is locked,
  * the context could get moved to another task.
  */
-static struct perf_counter_context *
+static struct perf_event_context *
 perf_lock_task_context(struct task_struct *task, unsigned long *flags)
 {
-        struct perf_counter_context *ctx;
+        struct perf_event_context *ctx;
 
         rcu_read_lock();
  retry:
-        ctx = rcu_dereference(task->perf_counter_ctxp);
+        ctx = rcu_dereference(task->perf_event_ctxp);
         if (ctx) {
                 /*
                  * If this context is a clone of another, it might
                  * get swapped for another underneath us by
-                 * perf_counter_task_sched_out, though the
+                 * perf_event_task_sched_out, though the
                  * rcu_read_lock() protects us from any context
                  * getting freed.  Lock the context and check if it
                  * got swapped before we could get the lock, and retry
@@ -201,7 +201,7 @@ perf_lock_task_context(struct task_struct *task, unsigned long *flags)
                  * can't get swapped on us any more.
                  */
                 spin_lock_irqsave(&ctx->lock, *flags);
-                if (ctx != rcu_dereference(task->perf_counter_ctxp)) {
+                if (ctx != rcu_dereference(task->perf_event_ctxp)) {
                         spin_unlock_irqrestore(&ctx->lock, *flags);
                         goto retry;
                 }
@@ -220,9 +220,9 @@ perf_lock_task_context(struct task_struct *task, unsigned long *flags)
  * can't get swapped to another task.  This also increments its
  * reference count so that the context can't get freed.
  */
-static struct perf_counter_context *perf_pin_task_context(struct task_struct *task)
+static struct perf_event_context *perf_pin_task_context(struct task_struct *task)
 {
-        struct perf_counter_context *ctx;
+        struct perf_event_context *ctx;
         unsigned long flags;
 
         ctx = perf_lock_task_context(task, &flags);
@@ -233,7 +233,7 @@ static struct perf_counter_context *perf_pin_task_context(struct task_struct *ta
         return ctx;
 }
 
-static void perf_unpin_context(struct perf_counter_context *ctx)
+static void perf_unpin_context(struct perf_event_context *ctx)
 {
         unsigned long flags;
 
@@ -244,59 +244,59 @@ static void perf_unpin_context(struct perf_counter_context *ctx)
 }
 
 /*
- * Add a counter from the lists for its context.
+ * Add a event from the lists for its context.
  * Must be called with ctx->mutex and ctx->lock held.
  */
 static void
-list_add_counter(struct perf_counter *counter, struct perf_counter_context *ctx)
+list_add_event(struct perf_event *event, struct perf_event_context *ctx)
 {
-        struct perf_counter *group_leader = counter->group_leader;
+        struct perf_event *group_leader = event->group_leader;
 
         /*
-         * Depending on whether it is a standalone or sibling counter,
-         * add it straight to the context's counter list, or to the group
+         * Depending on whether it is a standalone or sibling event,
+         * add it straight to the context's event list, or to the group
          * leader's sibling list:
          */
-        if (group_leader == counter)
-                list_add_tail(&counter->group_entry, &ctx->group_list);
+        if (group_leader == event)
+                list_add_tail(&event->group_entry, &ctx->group_list);
         else {
-                list_add_tail(&counter->group_entry, &group_leader->sibling_list);
+                list_add_tail(&event->group_entry, &group_leader->sibling_list);
                 group_leader->nr_siblings++;
         }
 
-        list_add_rcu(&counter->event_entry, &ctx->event_list);
-        ctx->nr_counters++;
-        if (counter->attr.inherit_stat)
+        list_add_rcu(&event->event_entry, &ctx->event_list);
+        ctx->nr_events++;
+        if (event->attr.inherit_stat)
                 ctx->nr_stat++;
 }
 
 /*
- * Remove a counter from the lists for its context.
+ * Remove a event from the lists for its context.
  * Must be called with ctx->mutex and ctx->lock held.
  */
 static void
-list_del_counter(struct perf_counter *counter, struct perf_counter_context *ctx)
+list_del_event(struct perf_event *event, struct perf_event_context *ctx)
 {
-        struct perf_counter *sibling, *tmp;
+        struct perf_event *sibling, *tmp;
 
-        if (list_empty(&counter->group_entry))
+        if (list_empty(&event->group_entry))
                 return;
-        ctx->nr_counters--;
-        if (counter->attr.inherit_stat)
+        ctx->nr_events--;
+        if (event->attr.inherit_stat)
                 ctx->nr_stat--;
 
-        list_del_init(&counter->group_entry);
-        list_del_rcu(&counter->event_entry);
+        list_del_init(&event->group_entry);
+        list_del_rcu(&event->event_entry);
 
-        if (counter->group_leader != counter)
-                counter->group_leader->nr_siblings--;
+        if (event->group_leader != event)
+                event->group_leader->nr_siblings--;
 
         /*
-         * If this was a group counter with sibling counters then
-         * upgrade the siblings to singleton counters by adding them
+         * If this was a group event with sibling events then
+         * upgrade the siblings to singleton events by adding them
          * to the context list directly:
          */
-        list_for_each_entry_safe(sibling, tmp, &counter->sibling_list, group_entry) {
+        list_for_each_entry_safe(sibling, tmp, &event->sibling_list, group_entry) {
 
                 list_move_tail(&sibling->group_entry, &ctx->group_list);
                 sibling->group_leader = sibling;
@@ -304,62 +304,62 @@ list_del_counter(struct perf_counter *counter, struct perf_counter_context *ctx)
 }
 
 static void
-counter_sched_out(struct perf_counter *counter,
+event_sched_out(struct perf_event *event,
                   struct perf_cpu_context *cpuctx,
-                  struct perf_counter_context *ctx)
+                  struct perf_event_context *ctx)
 {
-        if (counter->state != PERF_COUNTER_STATE_ACTIVE)
+        if (event->state != PERF_EVENT_STATE_ACTIVE)
                 return;
 
-        counter->state = PERF_COUNTER_STATE_INACTIVE;
-        if (counter->pending_disable) {
-                counter->pending_disable = 0;
-                counter->state = PERF_COUNTER_STATE_OFF;
+        event->state = PERF_EVENT_STATE_INACTIVE;
+        if (event->pending_disable) {
+                event->pending_disable = 0;
+                event->state = PERF_EVENT_STATE_OFF;
         }
-        counter->tstamp_stopped = ctx->time;
-        counter->pmu->disable(counter);
-        counter->oncpu = -1;
+        event->tstamp_stopped = ctx->time;
+        event->pmu->disable(event);
+        event->oncpu = -1;
 
-        if (!is_software_counter(counter))
+        if (!is_software_event(event))
                 cpuctx->active_oncpu--;
         ctx->nr_active--;
-        if (counter->attr.exclusive || !cpuctx->active_oncpu)
+        if (event->attr.exclusive || !cpuctx->active_oncpu)
                 cpuctx->exclusive = 0;
 }
 
 static void
-group_sched_out(struct perf_counter *group_counter,
+group_sched_out(struct perf_event *group_event,
                 struct perf_cpu_context *cpuctx,
-                struct perf_counter_context *ctx)
+                struct perf_event_context *ctx)
 {
-        struct perf_counter *counter;
+        struct perf_event *event;
 
-        if (group_counter->state != PERF_COUNTER_STATE_ACTIVE)
+        if (group_event->state != PERF_EVENT_STATE_ACTIVE)
                 return;
 
-        counter_sched_out(group_counter, cpuctx, ctx);
+        event_sched_out(group_event, cpuctx, ctx);
 
         /*
          * Schedule out siblings (if any):
          */
-        list_for_each_entry(counter, &group_counter->sibling_list, group_entry)
-                counter_sched_out(counter, cpuctx, ctx);
+        list_for_each_entry(event, &group_event->sibling_list, group_entry)
+                event_sched_out(event, cpuctx, ctx);
 
-        if (group_counter->attr.exclusive)
+        if (group_event->attr.exclusive)
                 cpuctx->exclusive = 0;
 }
 
 /*
- * Cross CPU call to remove a performance counter
+ * Cross CPU call to remove a performance event
  *
- * We disable the counter on the hardware level first. After that we
+ * We disable the event on the hardware level first. After that we
  * remove it from the context list.
  */
-static void __perf_counter_remove_from_context(void *info)
+static void __perf_event_remove_from_context(void *info)
 {
         struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
-        struct perf_counter *counter = info;
-        struct perf_counter_context *ctx = counter->ctx;
+        struct perf_event *event = info;
+        struct perf_event_context *ctx = event->ctx;
 
         /*
          * If this is a task context, we need to check whether it is
@@ -372,22 +372,22 @@ static void __perf_counter_remove_from_context(void *info)
         spin_lock(&ctx->lock);
         /*
          * Protect the list operation against NMI by disabling the
-         * counters on a global level.
+         * events on a global level.
          */
         perf_disable();
 
-        counter_sched_out(counter, cpuctx, ctx);
+        event_sched_out(event, cpuctx, ctx);
 
-        list_del_counter(counter, ctx);
+        list_del_event(event, ctx);
 
         if (!ctx->task) {
                 /*
-                 * Allow more per task counters with respect to the
+                 * Allow more per task events with respect to the
                  * reservation:
                  */
                 cpuctx->max_pertask =
-                        min(perf_max_counters - ctx->nr_counters,
-                            perf_max_counters - perf_reserved_percpu);
+                        min(perf_max_events - ctx->nr_events,
+                            perf_max_events - perf_reserved_percpu);
         }
 
         perf_enable();
@@ -396,56 +396,56 @@ static void __perf_counter_remove_from_context(void *info)
 
 
 /*
- * Remove the counter from a task's (or a CPU's) list of counters.
+ * Remove the event from a task's (or a CPU's) list of events.
  *
  * Must be called with ctx->mutex held.
  *
- * CPU counters are removed with a smp call. For task counters we only
+ * CPU events are removed with a smp call. For task events we only
  * call when the task is on a CPU.
  *
- * If counter->ctx is a cloned context, callers must make sure that
- * every task struct that counter->ctx->task could possibly point to
+ * If event->ctx is a cloned context, callers must make sure that
+ * every task struct that event->ctx->task could possibly point to
  * remains valid.  This is OK when called from perf_release since
  * that only calls us on the top-level context, which can't be a clone.
- * When called from perf_counter_exit_task, it's OK because the
+ * When called from perf_event_exit_task, it's OK because the
  * context has been detached from its task.
  */
-static void perf_counter_remove_from_context(struct perf_counter *counter)
+static void perf_event_remove_from_context(struct perf_event *event)
 {
-        struct perf_counter_context *ctx = counter->ctx;
+        struct perf_event_context *ctx = event->ctx;
         struct task_struct *task = ctx->task;
 
         if (!task) {
                 /*
-                 * Per cpu counters are removed via an smp call and
+                 * Per cpu events are removed via an smp call and
                  * the removal is always sucessful.
                  */
-                smp_call_function_single(counter->cpu,
-                                         __perf_counter_remove_from_context,
-                                         counter, 1);
+                smp_call_function_single(event->cpu,
+                                         __perf_event_remove_from_context,
+                                         event, 1);
                 return;
         }
 
 retry:
-        task_oncpu_function_call(task, __perf_counter_remove_from_context,
-                                 counter);
+        task_oncpu_function_call(task, __perf_event_remove_from_context,
+                                 event);
 
         spin_lock_irq(&ctx->lock);
         /*
          * If the context is active we need to retry the smp call.
          */
-        if (ctx->nr_active && !list_empty(&counter->group_entry)) {
+        if (ctx->nr_active && !list_empty(&event->group_entry)) {
                 spin_unlock_irq(&ctx->lock);
                 goto retry;
         }
 
         /*
          * The lock prevents that this context is scheduled in so we
-         * can remove the counter safely, if the call above did not
+         * can remove the event safely, if the call above did not
          * succeed.
          */
-        if (!list_empty(&counter->group_entry)) {
-                list_del_counter(counter, ctx);
+        if (!list_empty(&event->group_entry)) {
+                list_del_event(event, ctx);
         }
         spin_unlock_irq(&ctx->lock);
 }
@@ -458,7 +458,7 @@ static inline u64 perf_clock(void)
 /*
  * Update the record of the current time in a context.
  */
-static void update_context_time(struct perf_counter_context *ctx)
+static void update_context_time(struct perf_event_context *ctx)
 {
         u64 now = perf_clock();
 
@@ -467,51 +467,51 @@ static void update_context_time(struct perf_counter_context *ctx)
 }
 
 /*
- * Update the total_time_enabled and total_time_running fields for a counter.
+ * Update the total_time_enabled and total_time_running fields for a event.
  */
-static void update_counter_times(struct perf_counter *counter)
+static void update_event_times(struct perf_event *event)
 {
-        struct perf_counter_context *ctx = counter->ctx;
+        struct perf_event_context *ctx = event->ctx;
         u64 run_end;
 
-        if (counter->state < PERF_COUNTER_STATE_INACTIVE ||
-            counter->group_leader->state < PERF_COUNTER_STATE_INACTIVE)
+        if (event->state < PERF_EVENT_STATE_INACTIVE ||
+            event->group_leader->state < PERF_EVENT_STATE_INACTIVE)
                 return;
 
-        counter->total_time_enabled = ctx->time - counter->tstamp_enabled;
+        event->total_time_enabled = ctx->time - event->tstamp_enabled;
 
-        if (counter->state == PERF_COUNTER_STATE_INACTIVE)
-                run_end = counter->tstamp_stopped;
+        if (event->state == PERF_EVENT_STATE_INACTIVE)
+                run_end = event->tstamp_stopped;
         else
                 run_end = ctx->time;
 
-        counter->total_time_running = run_end - counter->tstamp_running;
+        event->total_time_running = run_end - event->tstamp_running;
 }
 
 /*
- * Update total_time_enabled and total_time_running for all counters in a group.
+ * Update total_time_enabled and total_time_running for all events in a group.
  */
-static void update_group_times(struct perf_counter *leader)
+static void update_group_times(struct perf_event *leader)
 {
-        struct perf_counter *counter;
+        struct perf_event *event;
 
-        update_counter_times(leader);
-        list_for_each_entry(counter, &leader->sibling_list, group_entry)
-                update_counter_times(counter);
+        update_event_times(leader);
+        list_for_each_entry(event, &leader->sibling_list, group_entry)
+                update_event_times(event);
 }
 
 /*
- * Cross CPU call to disable a performance counter
+ * Cross CPU call to disable a performance event
  */
-static void __perf_counter_disable(void *info)
+static void __perf_event_disable(void *info)
 {
-        struct perf_counter *counter = info;
+        struct perf_event *event = info;
         struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
-        struct perf_counter_context *ctx = counter->ctx;
+        struct perf_event_context *ctx = event->ctx;
 
         /*
-         * If this is a per-task counter, need to check whether this
-         * counter's task is the current task on this cpu.
+         * If this is a per-task event, need to check whether this
+         * event's task is the current task on this cpu.
          */
         if (ctx->task && cpuctx->task_ctx != ctx)
                 return;
@@ -519,57 +519,57 @@ static void __perf_counter_disable(void *info)
         spin_lock(&ctx->lock);
 
         /*
-         * If the counter is on, turn it off.
+         * If the event is on, turn it off.
          * If it is in error state, leave it in error state.
          */
-        if (counter->state >= PERF_COUNTER_STATE_INACTIVE) {
+        if (event->state >= PERF_EVENT_STATE_INACTIVE) {
                 update_context_time(ctx);
-                update_group_times(counter);
-                if (counter == counter->group_leader)
-                        group_sched_out(counter, cpuctx, ctx);
+                update_group_times(event);
+                if (event == event->group_leader)
+                        group_sched_out(event, cpuctx, ctx);
                 else
-                        counter_sched_out(counter, cpuctx, ctx);
-                counter->state = PERF_COUNTER_STATE_OFF;
+                        event_sched_out(event, cpuctx, ctx);
+                event->state = PERF_EVENT_STATE_OFF;
         }
 
         spin_unlock(&ctx->lock);
 }
 
 /*
- * Disable a counter.
+ * Disable a event.
  *
- * If counter->ctx is a cloned context, callers must make sure that
- * every task struct that counter->ctx->task could possibly point to
+ * If event->ctx is a cloned context, callers must make sure that
+ * every task struct that event->ctx->task could possibly point to
  * remains valid.  This condition is satisifed when called through
- * perf_counter_for_each_child or perf_counter_for_each because they
- * hold the top-level counter's child_mutex, so any descendant that
- * goes to exit will block in sync_child_counter.
- * When called from perf_pending_counter it's OK because counter->ctx
+ * perf_event_for_each_child or perf_event_for_each because they
+ * hold the top-level event's child_mutex, so any descendant that
+ * goes to exit will block in sync_child_event.
+ * When called from perf_pending_event it's OK because event->ctx
  * is the current context on this CPU and preemption is disabled,
- * hence we can't get into perf_counter_task_sched_out for this context.
+ * hence we can't get into perf_event_task_sched_out for this context.
  */
-static void perf_counter_disable(struct perf_counter *counter)
+static void perf_event_disable(struct perf_event *event)
 {
-        struct perf_counter_context *ctx = counter->ctx;
+        struct perf_event_context *ctx = event->ctx;
         struct task_struct *task = ctx->task;
 
         if (!task) {
                 /*
-                 * Disable the counter on the cpu that it's on
+                 * Disable the event on the cpu that it's on
                  */
-                smp_call_function_single(counter->cpu, __perf_counter_disable,
-                                         counter, 1);
+                smp_call_function_single(event->cpu, __perf_event_disable,
+                                         event, 1);
                 return;
         }
 
  retry:
-        task_oncpu_function_call(task, __perf_counter_disable, counter);
+        task_oncpu_function_call(task, __perf_event_disable, event);
 
         spin_lock_irq(&ctx->lock);
         /*
-         * If the counter is still active, we need to retry the cross-call.
+         * If the event is still active, we need to retry the cross-call.
          */
-        if (counter->state == PERF_COUNTER_STATE_ACTIVE) {
+        if (event->state == PERF_EVENT_STATE_ACTIVE) {
                 spin_unlock_irq(&ctx->lock);
                 goto retry;
         }
@@ -578,73 +578,73 @@ static void perf_counter_disable(struct perf_counter *counter)
          * Since we have the lock this context can't be scheduled
          * in, so we can change the state safely.
          */
-        if (counter->state == PERF_COUNTER_STATE_INACTIVE) {
-                update_group_times(counter);
-                counter->state = PERF_COUNTER_STATE_OFF;
+        if (event->state == PERF_EVENT_STATE_INACTIVE) {
+                update_group_times(event);
+                event->state = PERF_EVENT_STATE_OFF;
         }
 
         spin_unlock_irq(&ctx->lock);
 }
 
 static int
-counter_sched_in(struct perf_counter *counter,
+event_sched_in(struct perf_event *event,
                  struct perf_cpu_context *cpuctx,
-                 struct perf_counter_context *ctx,
+                 struct perf_event_context *ctx,
                  int cpu)
 {
-        if (counter->state <= PERF_COUNTER_STATE_OFF)
+        if (event->state <= PERF_EVENT_STATE_OFF)
                 return 0;
 
-        counter->state = PERF_COUNTER_STATE_ACTIVE;
-        counter->oncpu = cpu;   /* TODO: put 'cpu' into cpuctx->cpu */
+        event->state = PERF_EVENT_STATE_ACTIVE;
+        event->oncpu = cpu;     /* TODO: put 'cpu' into cpuctx->cpu */
         /*
          * The new state must be visible before we turn it on in the hardware:
          */
         smp_wmb();
 
-        if (counter->pmu->enable(counter)) {
-                counter->state = PERF_COUNTER_STATE_INACTIVE;
-                counter->oncpu = -1;
+        if (event->pmu->enable(event)) {
+                event->state = PERF_EVENT_STATE_INACTIVE;
+                event->oncpu = -1;
                 return -EAGAIN;
         }
 
-        counter->tstamp_running += ctx->time - counter->tstamp_stopped;
+        event->tstamp_running += ctx->time - event->tstamp_stopped;
 
-        if (!is_software_counter(counter))
+        if (!is_software_event(event))
                 cpuctx->active_oncpu++;
         ctx->nr_active++;
 
-        if (counter->attr.exclusive)
+        if (event->attr.exclusive)
                 cpuctx->exclusive = 1;
 
         return 0;
 }
 
 static int
-group_sched_in(struct perf_counter *group_counter,
+group_sched_in(struct perf_event *group_event,
                struct perf_cpu_context *cpuctx,
-               struct perf_counter_context *ctx,
+               struct perf_event_context *ctx,
                int cpu)
 {
-        struct perf_counter *counter, *partial_group;
+        struct perf_event *event, *partial_group;
         int ret;
 
-        if (group_counter->state == PERF_COUNTER_STATE_OFF)
+        if (group_event->state == PERF_EVENT_STATE_OFF)
                 return 0;
 
-        ret = hw_perf_group_sched_in(group_counter, cpuctx, ctx, cpu);
+        ret = hw_perf_group_sched_in(group_event, cpuctx, ctx, cpu);
         if (ret)
                 return ret < 0 ? ret : 0;
 
-        if (counter_sched_in(group_counter, cpuctx, ctx, cpu))
+        if (event_sched_in(group_event, cpuctx, ctx, cpu))
                 return -EAGAIN;
 
         /*
          * Schedule in siblings as one group (if any):
          */
-        list_for_each_entry(counter, &group_counter->sibling_list, group_entry) {
-                if (counter_sched_in(counter, cpuctx, ctx, cpu)) {
-                        partial_group = counter;
+        list_for_each_entry(event, &group_event->sibling_list, group_entry) {
+                if (event_sched_in(event, cpuctx, ctx, cpu)) {
+                        partial_group = event;
                         goto group_error;
                 }
         }
@@ -656,57 +656,57 @@ group_error:
          * Groups can be scheduled in as one unit only, so undo any
          * partial group before returning:
          */
-        list_for_each_entry(counter, &group_counter->sibling_list, group_entry) {
-                if (counter == partial_group)
+        list_for_each_entry(event, &group_event->sibling_list, group_entry) {
+                if (event == partial_group)
                         break;
-                counter_sched_out(counter, cpuctx, ctx);
+                event_sched_out(event, cpuctx, ctx);
         }
-        counter_sched_out(group_counter, cpuctx, ctx);
+        event_sched_out(group_event, cpuctx, ctx);
 
         return -EAGAIN;
 }
 
 /*
- * Return 1 for a group consisting entirely of software counters,
- * 0 if the group contains any hardware counters.
+ * Return 1 for a group consisting entirely of software events,
+ * 0 if the group contains any hardware events.
  */
-static int is_software_only_group(struct perf_counter *leader)
+static int is_software_only_group(struct perf_event *leader)
 {
-        struct perf_counter *counter;
+        struct perf_event *event;
 
-        if (!is_software_counter(leader))
+        if (!is_software_event(leader))
                 return 0;
 
-        list_for_each_entry(counter, &leader->sibling_list, group_entry)
-                if (!is_software_counter(counter))
+        list_for_each_entry(event, &leader->sibling_list, group_entry)
+                if (!is_software_event(event))
                         return 0;
 
         return 1;
 }
 
 /*
- * Work out whether we can put this counter group on the CPU now.
+ * Work out whether we can put this event group on the CPU now.
  */
-static int group_can_go_on(struct perf_counter *counter,
+static int group_can_go_on(struct perf_event *event,
                            struct perf_cpu_context *cpuctx,
                            int can_add_hw)
 {
         /*
-         * Groups consisting entirely of software counters can always go on.
+         * Groups consisting entirely of software events can always go on.
          */
-        if (is_software_only_group(counter))
+        if (is_software_only_group(event))
                 return 1;
         /*
          * If an exclusive group is already on, no other hardware
-         * counters can go on.
+         * events can go on.
          */
         if (cpuctx->exclusive)
                 return 0;
         /*
          * If this group is exclusive and there are already
-         * counters on the CPU, it can't go on.
+         * events on the CPU, it can't go on.
          */
-        if (counter->attr.exclusive && cpuctx->active_oncpu)
+        if (event->attr.exclusive && cpuctx->active_oncpu)
                 return 0;
         /*
          * Otherwise, try to add it if all previous groups were able
@@ -715,26 +715,26 @@ static int group_can_go_on(struct perf_counter *counter,
         return can_add_hw;
 }
 
-static void add_counter_to_ctx(struct perf_counter *counter,
-                               struct perf_counter_context *ctx)
+static void add_event_to_ctx(struct perf_event *event,
+                               struct perf_event_context *ctx)
 {
-        list_add_counter(counter, ctx);
-        counter->tstamp_enabled = ctx->time;
-        counter->tstamp_running = ctx->time;
-        counter->tstamp_stopped = ctx->time;
+        list_add_event(event, ctx);
+        event->tstamp_enabled = ctx->time;
+        event->tstamp_running = ctx->time;
+        event->tstamp_stopped = ctx->time;
 }
 
 /*
- * Cross CPU call to install and enable a performance counter
+ * Cross CPU call to install and enable a performance event
  *
  * Must be called with ctx->mutex held
  */
 static void __perf_install_in_context(void *info)
 {
         struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
-        struct perf_counter *counter = info;
-        struct perf_counter_context *ctx = counter->ctx;
-        struct perf_counter *leader = counter->group_leader;
+        struct perf_event *event = info;
+        struct perf_event_context *ctx = event->ctx;
+        struct perf_event *leader = event->group_leader;
         int cpu = smp_processor_id();
         int err;
 
@@ -743,7 +743,7 @@ static void __perf_install_in_context(void *info)
          * the current task context of this cpu. If not it has been
          * scheduled out before the smp call arrived.
          * Or possibly this is the right context but it isn't
-         * on this cpu because it had no counters.
+         * on this cpu because it had no events.
          */
         if (ctx->task && cpuctx->task_ctx != ctx) {
                 if (cpuctx->task_ctx || ctx->task != current)
@@ -757,41 +757,41 @@ static void __perf_install_in_context(void *info)
 
         /*
          * Protect the list operation against NMI by disabling the
-         * counters on a global level. NOP for non NMI based counters.
+         * events on a global level. NOP for non NMI based events.
          */
         perf_disable();
 
-        add_counter_to_ctx(counter, ctx);
+        add_event_to_ctx(event, ctx);
 
         /*
-         * Don't put the counter on if it is disabled or if
+         * Don't put the event on if it is disabled or if
          * it is in a group and the group isn't on.
          */
-        if (counter->state != PERF_COUNTER_STATE_INACTIVE ||
-            (leader != counter && leader->state != PERF_COUNTER_STATE_ACTIVE))
+        if (event->state != PERF_EVENT_STATE_INACTIVE ||
+            (leader != event && leader->state != PERF_EVENT_STATE_ACTIVE))
                 goto unlock;
 
         /*
-         * An exclusive counter can't go on if there are already active
-         * hardware counters, and no hardware counter can go on if there
-         * is already an exclusive counter on.
+         * An exclusive event can't go on if there are already active
+         * hardware events, and no hardware event can go on if there
+         * is already an exclusive event on.
          */
-        if (!group_can_go_on(counter, cpuctx, 1))
+        if (!group_can_go_on(event, cpuctx, 1))
                 err = -EEXIST;
         else
-                err = counter_sched_in(counter, cpuctx, ctx, cpu);
+                err = event_sched_in(event, cpuctx, ctx, cpu);
 
         if (err) {
                 /*
-                 * This counter couldn't go on.  If it is in a group
+                 * This event couldn't go on.  If it is in a group
                  * then we have to pull the whole group off.
-                 * If the counter group is pinned then put it in error state.
+                 * If the event group is pinned then put it in error state.
                  */
-                if (leader != counter)
+                if (leader != event)
                         group_sched_out(leader, cpuctx, ctx);
                 if (leader->attr.pinned) {
                         update_group_times(leader);
-                        leader->state = PERF_COUNTER_STATE_ERROR;
+                        leader->state = PERF_EVENT_STATE_ERROR;
                 }
         }
 
@@ -805,92 +805,92 @@ static void __perf_install_in_context(void *info)
 }
 
 /*
- * Attach a performance counter to a context
+ * Attach a performance event to a context
  *
- * First we add the counter to the list with the hardware enable bit
- * in counter->hw_config cleared.
+ * First we add the event to the list with the hardware enable bit
+ * in event->hw_config cleared.
  *
- * If the counter is attached to a task which is on a CPU we use a smp
+ * If the event is attached to a task which is on a CPU we use a smp
  * call to enable it in the task context. The task might have been
  * scheduled away, but we check this in the smp call again.
  *
  * Must be called with ctx->mutex held.
  */
 static void
-perf_install_in_context(struct perf_counter_context *ctx,
-                        struct perf_counter *counter,
+perf_install_in_context(struct perf_event_context *ctx,
+                        struct perf_event *event,
                         int cpu)
 {
         struct task_struct *task = ctx->task;
 
         if (!task) {
                 /*
-                 * Per cpu counters are installed via an smp call and
+                 * Per cpu events are installed via an smp call and
                  * the install is always sucessful.
                  */
                 smp_call_function_single(cpu, __perf_install_in_context,
-                                         counter, 1);
+                                         event, 1);
                 return;
         }
 
 retry:
         task_oncpu_function_call(task, __perf_install_in_context,
-                                 counter);
+                                 event);
 
         spin_lock_irq(&ctx->lock);
         /*
          * we need to retry the smp call.
          */
-        if (ctx->is_active && list_empty(&counter->group_entry)) {
+        if (ctx->is_active && list_empty(&event->group_entry)) {
                 spin_unlock_irq(&ctx->lock);
                 goto retry;
         }
 
         /*
          * The lock prevents that this context is scheduled in so we
-         * can add the counter safely, if it the call above did not
+         * can add the event safely, if it the call above did not
          * succeed.
          */
-        if (list_empty(&counter->group_entry))
-                add_counter_to_ctx(counter, ctx);
+        if (list_empty(&event->group_entry))
+                add_event_to_ctx(event, ctx);
         spin_unlock_irq(&ctx->lock);
 }
 
 /*
- * Put a counter into inactive state and update time fields.
+ * Put a event into inactive state and update time fields.
  * Enabling the leader of a group effectively enables all
  * the group members that aren't explicitly disabled, so we
  * have to update their ->tstamp_enabled also.
  * Note: this works for group members as well as group leaders
  * since the non-leader members' sibling_lists will be empty.
  */
-static void __perf_counter_mark_enabled(struct perf_counter *counter,
-                                        struct perf_counter_context *ctx)
+static void __perf_event_mark_enabled(struct perf_event *event,
+                                        struct perf_event_context *ctx)
 {
-        struct perf_counter *sub;
+        struct perf_event *sub;
 
-        counter->state = PERF_COUNTER_STATE_INACTIVE;
-        counter->tstamp_enabled = ctx->time - counter->total_time_enabled;
-        list_for_each_entry(sub, &counter->sibling_list, group_entry)
-                if (sub->state >= PERF_COUNTER_STATE_INACTIVE)
+        event->state = PERF_EVENT_STATE_INACTIVE;
+        event->tstamp_enabled = ctx->time - event->total_time_enabled;
+        list_for_each_entry(sub, &event->sibling_list, group_entry)
+                if (sub->state >= PERF_EVENT_STATE_INACTIVE)
                         sub->tstamp_enabled =
                                 ctx->time - sub->total_time_enabled;
 }
 
 /*
- * Cross CPU call to enable a performance counter
+ * Cross CPU call to enable a performance event
  */
-static void __perf_counter_enable(void *info)
+static void __perf_event_enable(void *info)
 {
-        struct perf_counter *counter = info;
+        struct perf_event *event = info;
         struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
-        struct perf_counter_context *ctx = counter->ctx;
-        struct perf_counter *leader = counter->group_leader;
+        struct perf_event_context *ctx = event->ctx;
+        struct perf_event *leader = event->group_leader;
         int err;
 
         /*
-         * If this is a per-task counter, need to check whether this
-         * counter's task is the current task on this cpu.
+         * If this is a per-task event, need to check whether this
+         * event's task is the current task on this cpu.
          */
         if (ctx->task && cpuctx->task_ctx != ctx) {
                 if (cpuctx->task_ctx || ctx->task != current)
@@ -902,40 +902,40 @@ static void __perf_counter_enable(void *info)
         ctx->is_active = 1;
         update_context_time(ctx);
 
-        if (counter->state >= PERF_COUNTER_STATE_INACTIVE)
+        if (event->state >= PERF_EVENT_STATE_INACTIVE)
                 goto unlock;
-        __perf_counter_mark_enabled(counter, ctx);
+        __perf_event_mark_enabled(event, ctx);
 
         /*
-         * If the counter is in a group and isn't the group leader,
+         * If the event is in a group and isn't the group leader,
          * then don't put it on unless the group is on.
          */
-        if (leader != counter && leader->state != PERF_COUNTER_STATE_ACTIVE)
+        if (leader != event && leader->state != PERF_EVENT_STATE_ACTIVE)
                 goto unlock;
 
-        if (!group_can_go_on(counter, cpuctx, 1)) {
+        if (!group_can_go_on(event, cpuctx, 1)) {
                 err = -EEXIST;
         } else {
                 perf_disable();
-                if (counter == leader)
-                        err = group_sched_in(counter, cpuctx, ctx,
+                if (event == leader)
+                        err = group_sched_in(event, cpuctx, ctx,
                                              smp_processor_id());
                 else
-                        err = counter_sched_in(counter, cpuctx, ctx,
+                        err = event_sched_in(event, cpuctx, ctx,
                                                smp_processor_id());
                 perf_enable();
         }
 
         if (err) {
                 /*
-                 * If this counter can't go on and it's part of a
+                 * If this event can't go on and it's part of a
                  * group, then the whole group has to come off.
                  */
-                if (leader != counter)
+                if (leader != event)
                         group_sched_out(leader, cpuctx, ctx);
                 if (leader->attr.pinned) {
                         update_group_times(leader);
-                        leader->state = PERF_COUNTER_STATE_ERROR;
+                        leader->state = PERF_EVENT_STATE_ERROR;
                 }
         }
 
@@ -944,98 +944,98 @@ static void __perf_counter_enable(void *info)
 }
 
 /*
- * Enable a counter.
+ * Enable a event.
  *
- * If counter->ctx is a cloned context, callers must make sure that
- * every task struct that counter->ctx->task could possibly point to
+ * If event->ctx is a cloned context, callers must make sure that
+ * every task struct that event->ctx->task could possibly point to
  * remains valid.  This condition is satisfied when called through
- * perf_counter_for_each_child or perf_counter_for_each as described
- * for perf_counter_disable.
+ * perf_event_for_each_child or perf_event_for_each as described
+ * for perf_event_disable.
  */
-static void perf_counter_enable(struct perf_counter *counter)
+static void perf_event_enable(struct perf_event *event)
 {
-        struct perf_counter_context *ctx = counter->ctx;
+        struct perf_event_context *ctx = event->ctx;
         struct task_struct *task = ctx->task;
 
         if (!task) {
                 /*
-                 * Enable the counter on the cpu that it's on
+                 * Enable the event on the cpu that it's on
                  */
-                smp_call_function_single(counter->cpu, __perf_counter_enable,
-                                         counter, 1);
+                smp_call_function_single(event->cpu, __perf_event_enable,
+                                         event, 1);
                 return;
         }
 
         spin_lock_irq(&ctx->lock);
-        if (counter->state >= PERF_COUNTER_STATE_INACTIVE)
+        if (event->state >= PERF_EVENT_STATE_INACTIVE)
                 goto out;
 
         /*
-         * If the counter is in error state, clear that first.
-         * That way, if we see the counter in error state below, we
+         * If the event is in error state, clear that first.
+         * That way, if we see the event in error state below, we
          * know that it has gone back into error state, as distinct
          * from the task having been scheduled away before the
          * cross-call arrived.
          */
-        if (counter->state == PERF_COUNTER_STATE_ERROR)
-                counter->state = PERF_COUNTER_STATE_OFF;
+        if (event->state == PERF_EVENT_STATE_ERROR)
+                event->state = PERF_EVENT_STATE_OFF;
 
  retry:
         spin_unlock_irq(&ctx->lock);
-        task_oncpu_function_call(task, __perf_counter_enable, counter);
+        task_oncpu_function_call(task, __perf_event_enable, event);
 
         spin_lock_irq(&ctx->lock);
 
         /*
-         * If the context is active and the counter is still off,
+         * If the context is active and the event is still off,
          * we need to retry the cross-call.
          */
-        if (ctx->is_active && counter->state == PERF_COUNTER_STATE_OFF)
+        if (ctx->is_active && event->state == PERF_EVENT_STATE_OFF)
                 goto retry;
 
         /*
          * Since we have the lock this context can't be scheduled
          * in, so we can change the state safely.
          */
-        if (counter->state == PERF_COUNTER_STATE_OFF)
-                __perf_counter_mark_enabled(counter, ctx);
+        if (event->state == PERF_EVENT_STATE_OFF)
+                __perf_event_mark_enabled(event, ctx);
 
  out:
         spin_unlock_irq(&ctx->lock);
 }
 
-static int perf_counter_refresh(struct perf_counter *counter, int refresh)
+static int perf_event_refresh(struct perf_event *event, int refresh)
 {
         /*
-         * not supported on inherited counters
+         * not supported on inherited events
          */
-        if (counter->attr.inherit)
+        if (event->attr.inherit)
                 return -EINVAL;
 
-        atomic_add(refresh, &counter->event_limit);
-        perf_counter_enable(counter);
+        atomic_add(refresh, &event->event_limit);
+        perf_event_enable(event);
 
         return 0;
 }
 
-void __perf_counter_sched_out(struct perf_counter_context *ctx,
+void __perf_event_sched_out(struct perf_event_context *ctx,
                               struct perf_cpu_context *cpuctx)
 {
-        struct perf_counter *counter;
+        struct perf_event *event;
 
         spin_lock(&ctx->lock);
         ctx->is_active = 0;
-        if (likely(!ctx->nr_counters))
+        if (likely(!ctx->nr_events))
                 goto out;
         update_context_time(ctx);
 
         perf_disable();
         if (ctx->nr_active) {
-                list_for_each_entry(counter, &ctx->group_list, group_entry) {
-                        if (counter != counter->group_leader)
-                                counter_sched_out(counter, cpuctx, ctx);
+                list_for_each_entry(event, &ctx->group_list, group_entry) {
+                        if (event != event->group_leader)
+                                event_sched_out(event, cpuctx, ctx);
                         else
-                                group_sched_out(counter, cpuctx, ctx);
+                                group_sched_out(event, cpuctx, ctx);
                 }
         }
         perf_enable();
@@ -1046,46 +1046,46 @@ void __perf_counter_sched_out(struct perf_counter_context *ctx,
 /*
  * Test whether two contexts are equivalent, i.e. whether they
  * have both been cloned from the same version of the same context
- * and they both have the same number of enabled counters.
- * If the number of enabled counters is the same, then the set
- * of enabled counters should be the same, because these are both
- * inherited contexts, therefore we can't access individual counters
+ * and they both have the same number of enabled events.
+ * If the number of enabled events is the same, then the set
+ * of enabled events should be the same, because these are both
+ * inherited contexts, therefore we can't access individual events
  * in them directly with an fd; we can only enable/disable all
- * counters via prctl, or enable/disable all counters in a family
+ * events via prctl, or enable/disable all events in a family
  * via ioctl, which will have the same effect on both contexts.
  */
-static int context_equiv(struct perf_counter_context *ctx1,
-                         struct perf_counter_context *ctx2)
+static int context_equiv(struct perf_event_context *ctx1,
+                         struct perf_event_context *ctx2)
 {
         return ctx1->parent_ctx && ctx1->parent_ctx == ctx2->parent_ctx
                 && ctx1->parent_gen == ctx2->parent_gen
                 && !ctx1->pin_count && !ctx2->pin_count;
 }
 
-static void __perf_counter_read(void *counter);
+static void __perf_event_read(void *event);
 
-static void __perf_counter_sync_stat(struct perf_counter *counter,
-                                     struct perf_counter *next_counter)
+static void __perf_event_sync_stat(struct perf_event *event,
+                                     struct perf_event *next_event)
 {
         u64 value;
 
-        if (!counter->attr.inherit_stat)
+        if (!event->attr.inherit_stat)
                 return;
 
         /*
-         * Update the counter value, we cannot use perf_counter_read()
+         * Update the event value, we cannot use perf_event_read()
          * because we're in the middle of a context switch and have IRQs
          * disabled, which upsets smp_call_function_single(), however
-         * we know the counter must be on the current CPU, therefore we
+         * we know the event must be on the current CPU, therefore we
          * don't need to use it.
          */
-        switch (counter->state) {
-        case PERF_COUNTER_STATE_ACTIVE:
-                __perf_counter_read(counter);
+        switch (event->state) {
+        case PERF_EVENT_STATE_ACTIVE:
+                __perf_event_read(event);
                 break;
 
-        case PERF_COUNTER_STATE_INACTIVE:
-                update_counter_times(counter);
+        case PERF_EVENT_STATE_INACTIVE:
+                update_event_times(event);
                 break;
 
         default:
@@ -1093,73 +1093,73 @@ static void __perf_counter_sync_stat(struct perf_counter *counter,
         }
 
         /*
-         * In order to keep per-task stats reliable we need to flip the counter
+         * In order to keep per-task stats reliable we need to flip the event
          * values when we flip the contexts.
          */
-        value = atomic64_read(&next_counter->count);
-        value = atomic64_xchg(&counter->count, value);
-        atomic64_set(&next_counter->count, value);
+        value = atomic64_read(&next_event->count);
+        value = atomic64_xchg(&event->count, value);
+        atomic64_set(&next_event->count, value);
 
-        swap(counter->total_time_enabled, next_counter->total_time_enabled);
-        swap(counter->total_time_running, next_counter->total_time_running);
+        swap(event->total_time_enabled, next_event->total_time_enabled);
+        swap(event->total_time_running, next_event->total_time_running);
 
         /*
          * Since we swizzled the values, update the user visible data too.
          */
-        perf_counter_update_userpage(counter);
-        perf_counter_update_userpage(next_counter);
+        perf_event_update_userpage(event);
+        perf_event_update_userpage(next_event);
 }
 
 #define list_next_entry(pos, member) \
         list_entry(pos->member.next, typeof(*pos), member)
 
-static void perf_counter_sync_stat(struct perf_counter_context *ctx,
-                                   struct perf_counter_context *next_ctx)
+static void perf_event_sync_stat(struct perf_event_context *ctx,
+                                   struct perf_event_context *next_ctx)
 {
-        struct perf_counter *counter, *next_counter;
+        struct perf_event *event, *next_event;
 
         if (!ctx->nr_stat)
                 return;
 
-        counter = list_first_entry(&ctx->event_list,
-                                   struct perf_counter, event_entry);
+        event = list_first_entry(&ctx->event_list,
+                                   struct perf_event, event_entry);
 
-        next_counter = list_first_entry(&next_ctx->event_list,
-                                        struct perf_counter, event_entry);
+        next_event = list_first_entry(&next_ctx->event_list,
+                                        struct perf_event, event_entry);
 
-        while (&counter->event_entry != &ctx->event_list &&
-               &next_counter->event_entry != &next_ctx->event_list) {
+        while (&event->event_entry != &ctx->event_list &&
+               &next_event->event_entry != &next_ctx->event_list) {
 
-                __perf_counter_sync_stat(counter, next_counter);
+                __perf_event_sync_stat(event, next_event);
 
-                counter = list_next_entry(counter, event_entry);
-                next_counter = list_next_entry(next_counter, event_entry);
+                event = list_next_entry(event, event_entry);
+                next_event = list_next_entry(next_event, event_entry);
         }
 }
 
 /*
- * Called from scheduler to remove the counters of the current task,
+ * Called from scheduler to remove the events of the current task,
  * with interrupts disabled.
  *
- * We stop each counter and update the counter value in counter->count.
+ * We stop each event and update the event value in event->count.
  *
  * This does not protect us against NMI, but disable()
- * sets the disabled bit in the control field of counter _before_
- * accessing the counter control register. If a NMI hits, then it will
- * not restart the counter.
+ * sets the disabled bit in the control field of event _before_
+ * accessing the event control register. If a NMI hits, then it will
+ * not restart the event.
  */
-void perf_counter_task_sched_out(struct task_struct *task,
+void perf_event_task_sched_out(struct task_struct *task,
                                  struct task_struct *next, int cpu)
 {
         struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu);
-        struct perf_counter_context *ctx = task->perf_counter_ctxp;
-        struct perf_counter_context *next_ctx;
-        struct perf_counter_context *parent;
+        struct perf_event_context *ctx = task->perf_event_ctxp;
+        struct perf_event_context *next_ctx;
+        struct perf_event_context *parent;
         struct pt_regs *regs;
         int do_switch = 1;
 
         regs = task_pt_regs(task);
-        perf_swcounter_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, regs, 0);
+        perf_sw_event(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 1, regs, 0);
 
         if (likely(!ctx || !cpuctx->task_ctx))
                 return;
@@ -1168,7 +1168,7 @@ void perf_counter_task_sched_out(struct task_struct *task,
 
         rcu_read_lock();
         parent = rcu_dereference(ctx->parent_ctx);
-        next_ctx = next->perf_counter_ctxp;
+        next_ctx = next->perf_event_ctxp;
         if (parent && next_ctx &&
             rcu_dereference(next_ctx->parent_ctx) == parent) {
                 /*
@@ -1185,15 +1185,15 @@ void perf_counter_task_sched_out(struct task_struct *task,
                 if (context_equiv(ctx, next_ctx)) {
                         /*
                          * XXX do we need a memory barrier of sorts
-                         * wrt to rcu_dereference() of perf_counter_ctxp
+                         * wrt to rcu_dereference() of perf_event_ctxp
                          */
-                        task->perf_counter_ctxp = next_ctx;
-                        next->perf_counter_ctxp = ctx;
+                        task->perf_event_ctxp = next_ctx;
+                        next->perf_event_ctxp = ctx;
                         ctx->task = next;
                         next_ctx->task = task;
                         do_switch = 0;
 
-                        perf_counter_sync_stat(ctx, next_ctx);
+                        perf_event_sync_stat(ctx, next_ctx);
                 }
                 spin_unlock(&next_ctx->lock);
                 spin_unlock(&ctx->lock);
@@ -1201,7 +1201,7 @@ void perf_counter_task_sched_out(struct task_struct *task,
         rcu_read_unlock();
 
         if (do_switch) {
-                __perf_counter_sched_out(ctx, cpuctx);
+                __perf_event_sched_out(ctx, cpuctx);
                 cpuctx->task_ctx = NULL;
         }
 }
@@ -1209,7 +1209,7 @@ void perf_counter_task_sched_out(struct task_struct *task,
 /*
  * Called with IRQs disabled
  */
-static void __perf_counter_task_sched_out(struct perf_counter_context *ctx)
+static void __perf_event_task_sched_out(struct perf_event_context *ctx)
 {
         struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
 
@@ -1219,28 +1219,28 @@ static void __perf_counter_task_sched_out(struct perf_counter_context *ctx)
         if (WARN_ON_ONCE(ctx != cpuctx->task_ctx))
                 return;
 
-        __perf_counter_sched_out(ctx, cpuctx);
+        __perf_event_sched_out(ctx, cpuctx);
         cpuctx->task_ctx = NULL;
 }
 
 /*
  * Called with IRQs disabled
  */
-static void perf_counter_cpu_sched_out(struct perf_cpu_context *cpuctx)
+static void perf_event_cpu_sched_out(struct perf_cpu_context *cpuctx)
 {
-        __perf_counter_sched_out(&cpuctx->ctx, cpuctx);
+        __perf_event_sched_out(&cpuctx->ctx, cpuctx);
 }
 
 static void
-__perf_counter_sched_in(struct perf_counter_context *ctx,
+__perf_event_sched_in(struct perf_event_context *ctx,
                         struct perf_cpu_context *cpuctx, int cpu)
 {
-        struct perf_counter *counter;
+        struct perf_event *event;
         int can_add_hw = 1;
 
         spin_lock(&ctx->lock);
         ctx->is_active = 1;
-        if (likely(!ctx->nr_counters))
+        if (likely(!ctx->nr_events))
                 goto out;
 
         ctx->timestamp = perf_clock();
@@ -1251,52 +1251,52 @@ __perf_counter_sched_in(struct perf_counter_context *ctx,
          * First go through the list and put on any pinned groups
          * in order to give them the best chance of going on.
          */
-        list_for_each_entry(counter, &ctx->group_list, group_entry) {
-                if (counter->state <= PERF_COUNTER_STATE_OFF ||
-                    !counter->attr.pinned)
+        list_for_each_entry(event, &ctx->group_list, group_entry) {
+                if (event->state <= PERF_EVENT_STATE_OFF ||
+                    !event->attr.pinned)
                         continue;
-                if (counter->cpu != -1 && counter->cpu != cpu)
+                if (event->cpu != -1 && event->cpu != cpu)
                         continue;
 
-                if (counter != counter->group_leader)
-                        counter_sched_in(counter, cpuctx, ctx, cpu);
+                if (event != event->group_leader)
+                        event_sched_in(event, cpuctx, ctx, cpu);
                 else {
-                        if (group_can_go_on(counter, cpuctx, 1))
-                                group_sched_in(counter, cpuctx, ctx, cpu);
+                        if (group_can_go_on(event, cpuctx, 1))
+                                group_sched_in(event, cpuctx, ctx, cpu);
                 }
 
                 /*
                  * If this pinned group hasn't been scheduled,
                  * put it in error state.
                  */
-                if (counter->state == PERF_COUNTER_STATE_INACTIVE) {
-                        update_group_times(counter);
-                        counter->state = PERF_COUNTER_STATE_ERROR;
+                if (event->state == PERF_EVENT_STATE_INACTIVE) {
+                        update_group_times(event);
+                        event->state = PERF_EVENT_STATE_ERROR;
                 }
         }
 
-        list_for_each_entry(counter, &ctx->group_list, group_entry) {
+        list_for_each_entry(event, &ctx->group_list, group_entry) {
                 /*
-                 * Ignore counters in OFF or ERROR state, and
-                 * ignore pinned counters since we did them already.
+                 * Ignore events in OFF or ERROR state, and
+                 * ignore pinned events since we did them already.
                  */
-                if (counter->state <= PERF_COUNTER_STATE_OFF ||
-                    counter->attr.pinned)
+                if (event->state <= PERF_EVENT_STATE_OFF ||
+                    event->attr.pinned)
                         continue;
 
                 /*
                  * Listen to the 'cpu' scheduling filter constraint
-                 * of counters:
+                 * of events:
                  */
-                if (counter->cpu != -1 && counter->cpu != cpu)
+                if (event->cpu != -1 && event->cpu != cpu)
                         continue;
 
-                if (counter != counter->group_leader) {
-                        if (counter_sched_in(counter, cpuctx, ctx, cpu))
+                if (event != event->group_leader) {
+                        if (event_sched_in(event, cpuctx, ctx, cpu))
                                 can_add_hw = 0;
                 } else {
-                        if (group_can_go_on(counter, cpuctx, can_add_hw)) {
-                                if (group_sched_in(counter, cpuctx, ctx, cpu))
+                        if (group_can_go_on(event, cpuctx, can_add_hw)) {
+                                if (group_sched_in(event, cpuctx, ctx, cpu))
                                         can_add_hw = 0;
                         }
                 }
@@ -1307,48 +1307,48 @@ __perf_counter_sched_in(struct perf_counter_context *ctx,
 }
 
 /*
- * Called from scheduler to add the counters of the current task
+ * Called from scheduler to add the events of the current task
  * with interrupts disabled.
  *
- * We restore the counter value and then enable it.
+ * We restore the event value and then enable it.
  *
  * This does not protect us against NMI, but enable()
- * sets the enabled bit in the control field of counter _before_
- * accessing the counter control register. If a NMI hits, then it will
- * keep the counter running.
+ * sets the enabled bit in the control field of event _before_
+ * accessing the event control register. If a NMI hits, then it will
+ * keep the event running.
  */
-void perf_counter_task_sched_in(struct task_struct *task, int cpu)
+void perf_event_task_sched_in(struct task_struct *task, int cpu)
 {
         struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu);
-        struct perf_counter_context *ctx = task->perf_counter_ctxp;
+        struct perf_event_context *ctx = task->perf_event_ctxp;
 
         if (likely(!ctx))
                 return;
         if (cpuctx->task_ctx == ctx)
                 return;
-        __perf_counter_sched_in(ctx, cpuctx, cpu);
+        __perf_event_sched_in(ctx, cpuctx, cpu);
         cpuctx->task_ctx = ctx;
 }
 
-static void perf_counter_cpu_sched_in(struct perf_cpu_context *cpuctx, int cpu)
+static void perf_event_cpu_sched_in(struct perf_cpu_context *cpuctx, int cpu)
 {
-        struct perf_counter_context *ctx = &cpuctx->ctx;
+        struct perf_event_context *ctx = &cpuctx->ctx;
 
-        __perf_counter_sched_in(ctx, cpuctx, cpu);
+        __perf_event_sched_in(ctx, cpuctx, cpu);
 }
 
 #define MAX_INTERRUPTS (~0ULL)
 
-static void perf_log_throttle(struct perf_counter *counter, int enable);
+static void perf_log_throttle(struct perf_event *event, int enable);
 
-static void perf_adjust_period(struct perf_counter *counter, u64 events)
+static void perf_adjust_period(struct perf_event *event, u64 events)
 {
-        struct hw_perf_counter *hwc = &counter->hw;
+        struct hw_perf_event *hwc = &event->hw;
         u64 period, sample_period;
         s64 delta;
 
         events *= hwc->sample_period;
-        period = div64_u64(events, counter->attr.sample_freq);
+        period = div64_u64(events, event->attr.sample_freq);
 
         delta = (s64)(period - hwc->sample_period);
         delta = (delta + 7) / 8; /* low pass filter */
@@ -1361,39 +1361,39 @@ static void perf_adjust_period(struct perf_counter *counter, u64 events)
         hwc->sample_period = sample_period;
 }
 
-static void perf_ctx_adjust_freq(struct perf_counter_context *ctx)
+static void perf_ctx_adjust_freq(struct perf_event_context *ctx)
 {
-        struct perf_counter *counter;
-        struct hw_perf_counter *hwc;
+        struct perf_event *event;
+        struct hw_perf_event *hwc;
         u64 interrupts, freq;
 
         spin_lock(&ctx->lock);
-        list_for_each_entry(counter, &ctx->group_list, group_entry) {
-                if (counter->state != PERF_COUNTER_STATE_ACTIVE)
+        list_for_each_entry(event, &ctx->group_list, group_entry) {
+                if (event->state != PERF_EVENT_STATE_ACTIVE)
                         continue;
 
-                hwc = &counter->hw;
+                hwc = &event->hw;
 
                 interrupts = hwc->interrupts;
                 hwc->interrupts = 0;
 
                 /*
-                 * unthrottle counters on the tick
+                 * unthrottle events on the tick
                  */
                 if (interrupts == MAX_INTERRUPTS) {
-                        perf_log_throttle(counter, 1);
-                        counter->pmu->unthrottle(counter);
-                        interrupts = 2*sysctl_perf_counter_sample_rate/HZ;
+                        perf_log_throttle(event, 1);
+                        event->pmu->unthrottle(event);
+                        interrupts = 2*sysctl_perf_event_sample_rate/HZ;
                 }
 
-                if (!counter->attr.freq || !counter->attr.sample_freq)
+                if (!event->attr.freq || !event->attr.sample_freq)
                         continue;
 
                 /*
                  * if the specified freq < HZ then we need to skip ticks
                  */
-                if (counter->attr.sample_freq < HZ) {
-                        freq = counter->attr.sample_freq;
+                if (event->attr.sample_freq < HZ) {
+                        freq = event->attr.sample_freq;
 
                         hwc->freq_count += freq;
                         hwc->freq_interrupts += interrupts;
@@ -1407,7 +1407,7 @@ static void perf_ctx_adjust_freq(struct perf_counter_context *ctx)
                 } else
                         freq = HZ;
 
-                perf_adjust_period(counter, freq * interrupts);
+                perf_adjust_period(event, freq * interrupts);
 
                 /*
                  * In order to avoid being stalled by an (accidental) huge
@@ -1416,9 +1416,9 @@ static void perf_ctx_adjust_freq(struct perf_counter_context *ctx)
                  */
                 if (!interrupts) {
                         perf_disable();
-                        counter->pmu->disable(counter);
+                        event->pmu->disable(event);
                         atomic64_set(&hwc->period_left, 0);
-                        counter->pmu->enable(counter);
+                        event->pmu->enable(event);
                         perf_enable();
                 }
         }
@@ -1426,22 +1426,22 @@ static void perf_ctx_adjust_freq(struct perf_counter_context *ctx)
 }
 
 /*
- * Round-robin a context's counters:
+ * Round-robin a context's events:
  */
-static void rotate_ctx(struct perf_counter_context *ctx)
+static void rotate_ctx(struct perf_event_context *ctx)
 {
-        struct perf_counter *counter;
+        struct perf_event *event;
 
-        if (!ctx->nr_counters)
+        if (!ctx->nr_events)
                 return;
 
         spin_lock(&ctx->lock);
         /*
-         * Rotate the first entry last (works just fine for group counters too):
+         * Rotate the first entry last (works just fine for group events too):
          */
         perf_disable();
-        list_for_each_entry(counter, &ctx->group_list, group_entry) {
-                list_move_tail(&counter->group_entry, &ctx->group_list);
+        list_for_each_entry(event, &ctx->group_list, group_entry) {
+                list_move_tail(&event->group_entry, &ctx->group_list);
                 break;
         }
         perf_enable();
@@ -1449,93 +1449,93 @@ static void rotate_ctx(struct perf_counter_context *ctx)
         spin_unlock(&ctx->lock);
 }
 
-void perf_counter_task_tick(struct task_struct *curr, int cpu)
+void perf_event_task_tick(struct task_struct *curr, int cpu)
 {
         struct perf_cpu_context *cpuctx;
-        struct perf_counter_context *ctx;
+        struct perf_event_context *ctx;
 
-        if (!atomic_read(&nr_counters))
+        if (!atomic_read(&nr_events))
                 return;
 
         cpuctx = &per_cpu(perf_cpu_context, cpu);
-        ctx = curr->perf_counter_ctxp;
+        ctx = curr->perf_event_ctxp;
 
         perf_ctx_adjust_freq(&cpuctx->ctx);
         if (ctx)
                 perf_ctx_adjust_freq(ctx);
 
-        perf_counter_cpu_sched_out(cpuctx);
+        perf_event_cpu_sched_out(cpuctx);
         if (ctx)
-                __perf_counter_task_sched_out(ctx);
+                __perf_event_task_sched_out(ctx);
 
         rotate_ctx(&cpuctx->ctx);
         if (ctx)
                 rotate_ctx(ctx);
 
-        perf_counter_cpu_sched_in(cpuctx, cpu);
+        perf_event_cpu_sched_in(cpuctx, cpu);
         if (ctx)
-                perf_counter_task_sched_in(curr, cpu);
+                perf_event_task_sched_in(curr, cpu);
 }
 
 /*
- * Enable all of a task's counters that have been marked enable-on-exec.
+ * Enable all of a task's events that have been marked enable-on-exec.
  * This expects task == current.
  */
-static void perf_counter_enable_on_exec(struct task_struct *task)
+static void perf_event_enable_on_exec(struct task_struct *task)
 {
-        struct perf_counter_context *ctx;
-        struct perf_counter *counter;
+        struct perf_event_context *ctx;
+        struct perf_event *event;
         unsigned long flags;
         int enabled = 0;
 
         local_irq_save(flags);
-        ctx = task->perf_counter_ctxp;
-        if (!ctx || !ctx->nr_counters)
+        ctx = task->perf_event_ctxp;
+        if (!ctx || !ctx->nr_events)
                 goto out;
 
-        __perf_counter_task_sched_out(ctx);
+        __perf_event_task_sched_out(ctx);
 
         spin_lock(&ctx->lock);
 
-        list_for_each_entry(counter, &ctx->group_list, group_entry) {
-                if (!counter->attr.enable_on_exec)
+        list_for_each_entry(event, &ctx->group_list, group_entry) {
+                if (!event->attr.enable_on_exec)
                         continue;
-                counter->attr.enable_on_exec = 0;
-                if (counter->state >= PERF_COUNTER_STATE_INACTIVE)
+                event->attr.enable_on_exec = 0;
+                if (event->state >= PERF_EVENT_STATE_INACTIVE)
                         continue;
-                __perf_counter_mark_enabled(counter, ctx);
+                __perf_event_mark_enabled(event, ctx);
                 enabled = 1;
         }
 
         /*
-         * Unclone this context if we enabled any counter.
+         * Unclone this context if we enabled any event.
          */
         if (enabled)
                 unclone_ctx(ctx);
 
         spin_unlock(&ctx->lock);
 
-        perf_counter_task_sched_in(task, smp_processor_id());
+        perf_event_task_sched_in(task, smp_processor_id());
  out:
         local_irq_restore(flags);
 }
 
 /*
- * Cross CPU call to read the hardware counter
+ * Cross CPU call to read the hardware event
  */
-static void __perf_counter_read(void *info)
+static void __perf_event_read(void *info)
 {
         struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
-        struct perf_counter *counter = info;
-        struct perf_counter_context *ctx = counter->ctx;
+        struct perf_event *event = info;
+        struct perf_event_context *ctx = event->ctx;
         unsigned long flags;
 
         /*
          * If this is a task context, we need to check whether it is
          * the current task context of this cpu.  If not it has been
          * scheduled out before the smp call arrived.  In that case
-         * counter->count would have been updated to a recent sample
-         * when the counter was scheduled out.
+         * event->count would have been updated to a recent sample
+         * when the event was scheduled out.
          */
         if (ctx->task && cpuctx->task_ctx != ctx)
                 return;
@@ -1543,32 +1543,32 @@ static void __perf_counter_read(void *info)
         local_irq_save(flags);
         if (ctx->is_active)
                 update_context_time(ctx);
-        counter->pmu->read(counter);
-        update_counter_times(counter);
+        event->pmu->read(event);
+        update_event_times(event);
         local_irq_restore(flags);
 }
 
-static u64 perf_counter_read(struct perf_counter *counter)
+static u64 perf_event_read(struct perf_event *event)
 {
         /*
-         * If counter is enabled and currently active on a CPU, update the
-         * value in the counter structure:
+         * If event is enabled and currently active on a CPU, update the
+         * value in the event structure:
          */
-        if (counter->state == PERF_COUNTER_STATE_ACTIVE) {
-                smp_call_function_single(counter->oncpu,
-                                         __perf_counter_read, counter, 1);
-        } else if (counter->state == PERF_COUNTER_STATE_INACTIVE) {
-                update_counter_times(counter);
+        if (event->state == PERF_EVENT_STATE_ACTIVE) {
+                smp_call_function_single(event->oncpu,
+                                         __perf_event_read, event, 1);
+        } else if (event->state == PERF_EVENT_STATE_INACTIVE) {
+                update_event_times(event);
         }
 
-        return atomic64_read(&counter->count);
+        return atomic64_read(&event->count);
 }
 
 /*
- * Initialize the perf_counter context in a task_struct:
+ * Initialize the perf_event context in a task_struct:
  */
 static void
-__perf_counter_init_context(struct perf_counter_context *ctx,
+__perf_event_init_context(struct perf_event_context *ctx,
                             struct task_struct *task)
 {
         memset(ctx, 0, sizeof(*ctx));
@@ -1580,19 +1580,19 @@ __perf_counter_init_context(struct perf_counter_context *ctx,
         ctx->task = task;
 }
 
-static struct perf_counter_context *find_get_context(pid_t pid, int cpu)
+static struct perf_event_context *find_get_context(pid_t pid, int cpu)
 {
-        struct perf_counter_context *ctx;
+        struct perf_event_context *ctx;
         struct perf_cpu_context *cpuctx;
         struct task_struct *task;
         unsigned long flags;
         int err;
 
         /*
-         * If cpu is not a wildcard then this is a percpu counter:
+         * If cpu is not a wildcard then this is a percpu event:
          */
         if (cpu != -1) {
-                /* Must be root to operate on a CPU counter: */
+                /* Must be root to operate on a CPU event: */
                 if (perf_paranoid_cpu() && !capable(CAP_SYS_ADMIN))
                         return ERR_PTR(-EACCES);
 
@@ -1600,7 +1600,7 @@ static struct perf_counter_context *find_get_context(pid_t pid, int cpu)
                         return ERR_PTR(-EINVAL);
 
                 /*
-                 * We could be clever and allow to attach a counter to an
+                 * We could be clever and allow to attach a event to an
                  * offline CPU and activate it when the CPU comes up, but
                  * that's for later.
                  */
@@ -1627,7 +1627,7 @@ static struct perf_counter_context *find_get_context(pid_t pid, int cpu)
                 return ERR_PTR(-ESRCH);
 
         /*
-         * Can't attach counters to a dying task.
+         * Can't attach events to a dying task.
          */
         err = -ESRCH;
         if (task->flags & PF_EXITING)
@@ -1646,13 +1646,13 @@ static struct perf_counter_context *find_get_context(pid_t pid, int cpu)
         }
 
         if (!ctx) {
-                ctx = kmalloc(sizeof(struct perf_counter_context), GFP_KERNEL);
+                ctx = kmalloc(sizeof(struct perf_event_context), GFP_KERNEL);
                 err = -ENOMEM;
                 if (!ctx)
                         goto errout;
-                __perf_counter_init_context(ctx, task);
+                __perf_event_init_context(ctx, task);
                 get_ctx(ctx);
-                if (cmpxchg(&task->perf_counter_ctxp, NULL, ctx)) {
+                if (cmpxchg(&task->perf_event_ctxp, NULL, ctx)) {
                         /*
                          * We raced with some other task; use
                          * the context they set.
@@ -1671,42 +1671,42 @@ static struct perf_counter_context *find_get_context(pid_t pid, int cpu)
         return ERR_PTR(err);
 }
 
-static void free_counter_rcu(struct rcu_head *head)
+static void free_event_rcu(struct rcu_head *head)
 {
-        struct perf_counter *counter;
+        struct perf_event *event;
 
-        counter = container_of(head, struct perf_counter, rcu_head);
-        if (counter->ns)
-                put_pid_ns(counter->ns);
-        kfree(counter);
+        event = container_of(head, struct perf_event, rcu_head);
+        if (event->ns)
+                put_pid_ns(event->ns);
+        kfree(event);
 }
 
-static void perf_pending_sync(struct perf_counter *counter);
+static void perf_pending_sync(struct perf_event *event);
 
-static void free_counter(struct perf_counter *counter)
+static void free_event(struct perf_event *event)
 {
-        perf_pending_sync(counter);
+        perf_pending_sync(event);
 
-        if (!counter->parent) {
-                atomic_dec(&nr_counters);
-                if (counter->attr.mmap)
-                        atomic_dec(&nr_mmap_counters);
-                if (counter->attr.comm)
-                        atomic_dec(&nr_comm_counters);
-                if (counter->attr.task)
-                        atomic_dec(&nr_task_counters);
+        if (!event->parent) {
+                atomic_dec(&nr_events);
+                if (event->attr.mmap)
+                        atomic_dec(&nr_mmap_events);
+                if (event->attr.comm)
+                        atomic_dec(&nr_comm_events);
+                if (event->attr.task)
+                        atomic_dec(&nr_task_events);
         }
 
-        if (counter->output) {
-                fput(counter->output->filp);
-                counter->output = NULL;
+        if (event->output) {
+                fput(event->output->filp);
+                event->output = NULL;
         }
 
-        if (counter->destroy)
-                counter->destroy(counter);
+        if (event->destroy)
+                event->destroy(event);
 
-        put_ctx(counter->ctx);
-        call_rcu(&counter->rcu_head, free_counter_rcu);
+        put_ctx(event->ctx);
+        call_rcu(&event->rcu_head, free_event_rcu);
 }
 
 /*
@@ -1714,43 +1714,43 @@ static void free_counter(struct perf_counter *counter)
  */
 static int perf_release(struct inode *inode, struct file *file)
 {
-        struct perf_counter *counter = file->private_data;
-        struct perf_counter_context *ctx = counter->ctx;
+        struct perf_event *event = file->private_data;
+        struct perf_event_context *ctx = event->ctx;
 
         file->private_data = NULL;
 
         WARN_ON_ONCE(ctx->parent_ctx);
         mutex_lock(&ctx->mutex);
-        perf_counter_remove_from_context(counter);
+        perf_event_remove_from_context(event);
         mutex_unlock(&ctx->mutex);
 
-        mutex_lock(&counter->owner->perf_counter_mutex);
-        list_del_init(&counter->owner_entry);
-        mutex_unlock(&counter->owner->perf_counter_mutex);
-        put_task_struct(counter->owner);
+        mutex_lock(&event->owner->perf_event_mutex);
+        list_del_init(&event->owner_entry);
+        mutex_unlock(&event->owner->perf_event_mutex);
+        put_task_struct(event->owner);
 
-        free_counter(counter);
+        free_event(event);
 
         return 0;
 }
 
-static int perf_counter_read_size(struct perf_counter *counter)
+static int perf_event_read_size(struct perf_event *event)
 {
         int entry = sizeof(u64); /* value */
         int size = 0;
         int nr = 1;
 
-        if (counter->attr.read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
+        if (event->attr.read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
                 size += sizeof(u64);
 
-        if (counter->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
+        if (event->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
                 size += sizeof(u64);
 
-        if (counter->attr.read_format & PERF_FORMAT_ID)
+        if (event->attr.read_format & PERF_FORMAT_ID)
                 entry += sizeof(u64);
 
-        if (counter->attr.read_format & PERF_FORMAT_GROUP) {
-                nr += counter->group_leader->nr_siblings;
+        if (event->attr.read_format & PERF_FORMAT_GROUP) {
+                nr += event->group_leader->nr_siblings;
                 size += sizeof(u64);
         }
 
@@ -1759,27 +1759,27 @@ static int perf_counter_read_size(struct perf_counter *counter)
         return size;
 }
 
-static u64 perf_counter_read_value(struct perf_counter *counter)
+static u64 perf_event_read_value(struct perf_event *event)
 {
-        struct perf_counter *child;
+        struct perf_event *child;
         u64 total = 0;
 
-        total += perf_counter_read(counter);
-        list_for_each_entry(child, &counter->child_list, child_list)
-                total += perf_counter_read(child);
+        total += perf_event_read(event);
+        list_for_each_entry(child, &event->child_list, child_list)
+                total += perf_event_read(child);
 
         return total;
 }
 
-static int perf_counter_read_entry(struct perf_counter *counter,
+static int perf_event_read_entry(struct perf_event *event,
                                    u64 read_format, char __user *buf)
 {
         int n = 0, count = 0;
         u64 values[2];
 
-        values[n++] = perf_counter_read_value(counter);
+        values[n++] = perf_event_read_value(event);
         if (read_format & PERF_FORMAT_ID)
-                values[n++] = primary_counter_id(counter);
+                values[n++] = primary_event_id(event);
 
         count = n * sizeof(u64);
 
@@ -1789,10 +1789,10 @@ static int perf_counter_read_entry(struct perf_counter *counter,
         return count;
 }
 
-static int perf_counter_read_group(struct perf_counter *counter,
+static int perf_event_read_group(struct perf_event *event,
                                    u64 read_format, char __user *buf)
 {
-        struct perf_counter *leader = counter->group_leader, *sub;
+        struct perf_event *leader = event->group_leader, *sub;
         int n = 0, size = 0, err = -EFAULT;
         u64 values[3];
 
@@ -1811,14 +1811,14 @@ static int perf_counter_read_group(struct perf_counter *counter,
         if (copy_to_user(buf, values, size))
                 return -EFAULT;
 
-        err = perf_counter_read_entry(leader, read_format, buf + size);
+        err = perf_event_read_entry(leader, read_format, buf + size);
         if (err < 0)
                 return err;
 
         size += err;
 
         list_for_each_entry(sub, &leader->sibling_list, group_entry) {
-                err = perf_counter_read_entry(sub, read_format,
+                err = perf_event_read_entry(sub, read_format,
                                 buf + size);
                 if (err < 0)
                         return err;
@@ -1829,23 +1829,23 @@ static int perf_counter_read_group(struct perf_counter *counter,
         return size;
 }
 
-static int perf_counter_read_one(struct perf_counter *counter,
+static int perf_event_read_one(struct perf_event *event,
                                  u64 read_format, char __user *buf)
 {
         u64 values[4];
         int n = 0;
 
-        values[n++] = perf_counter_read_value(counter);
+        values[n++] = perf_event_read_value(event);
         if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
-                values[n++] = counter->total_time_enabled +
-                        atomic64_read(&counter->child_total_time_enabled);
+                values[n++] = event->total_time_enabled +
+                        atomic64_read(&event->child_total_time_enabled);
         }
         if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
-                values[n++] = counter->total_time_running +
-                        atomic64_read(&counter->child_total_time_running);
+                values[n++] = event->total_time_running +
+                        atomic64_read(&event->child_total_time_running);
         }
         if (read_format & PERF_FORMAT_ID)
-                values[n++] = primary_counter_id(counter);
+                values[n++] = primary_event_id(event);
 
         if (copy_to_user(buf, values, n * sizeof(u64)))
                 return -EFAULT;
@@ -1854,32 +1854,32 @@ static int perf_counter_read_one(struct perf_counter *counter,
 }
 
 /*
- * Read the performance counter - simple non blocking version for now
+ * Read the performance event - simple non blocking version for now
  */
 static ssize_t
-perf_read_hw(struct perf_counter *counter, char __user *buf, size_t count)
+perf_read_hw(struct perf_event *event, char __user *buf, size_t count)
 {
-        u64 read_format = counter->attr.read_format;
+        u64 read_format = event->attr.read_format;
         int ret;
 
         /*
-         * Return end-of-file for a read on a counter that is in
+         * Return end-of-file for a read on a event that is in
          * error state (i.e. because it was pinned but it couldn't be
          * scheduled on to the CPU at some point).
          */
-        if (counter->state == PERF_COUNTER_STATE_ERROR)
+        if (event->state == PERF_EVENT_STATE_ERROR)
                 return 0;
 
-        if (count < perf_counter_read_size(counter))
+        if (count < perf_event_read_size(event))
                 return -ENOSPC;
 
-        WARN_ON_ONCE(counter->ctx->parent_ctx);
-        mutex_lock(&counter->child_mutex);
+        WARN_ON_ONCE(event->ctx->parent_ctx);
+        mutex_lock(&event->child_mutex);
         if (read_format & PERF_FORMAT_GROUP)
-                ret = perf_counter_read_group(counter, read_format, buf);
+                ret = perf_event_read_group(event, read_format, buf);
         else
-                ret = perf_counter_read_one(counter, read_format, buf);
-        mutex_unlock(&counter->child_mutex);
+                ret = perf_event_read_one(event, read_format, buf);
+        mutex_unlock(&event->child_mutex);
 
         return ret;
 }
@@ -1887,79 +1887,79 @@ perf_read_hw(struct perf_counter *counter, char __user *buf, size_t count)
 static ssize_t
 perf_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 {
-        struct perf_counter *counter = file->private_data;
+        struct perf_event *event = file->private_data;
 
-        return perf_read_hw(counter, buf, count);
+        return perf_read_hw(event, buf, count);
 }
 
 static unsigned int perf_poll(struct file *file, poll_table *wait)
 {
-        struct perf_counter *counter = file->private_data;
+        struct perf_event *event = file->private_data;
         struct perf_mmap_data *data;
         unsigned int events = POLL_HUP;
 
         rcu_read_lock();
-        data = rcu_dereference(counter->data);
+        data = rcu_dereference(event->data);
         if (data)
                 events = atomic_xchg(&data->poll, 0);
         rcu_read_unlock();
 
-        poll_wait(file, &counter->waitq, wait);
+        poll_wait(file, &event->waitq, wait);
 
         return events;
 }
 
-static void perf_counter_reset(struct perf_counter *counter)
+static void perf_event_reset(struct perf_event *event)
 {
-        (void)perf_counter_read(counter);
-        atomic64_set(&counter->count, 0);
-        perf_counter_update_userpage(counter);
+        (void)perf_event_read(event);
+        atomic64_set(&event->count, 0);
+        perf_event_update_userpage(event);
 }
 
 /*
- * Holding the top-level counter's child_mutex means that any
- * descendant process that has inherited this counter will block
- * in sync_child_counter if it goes to exit, thus satisfying the
- * task existence requirements of perf_counter_enable/disable.
+ * Holding the top-level event's child_mutex means that any
+ * descendant process that has inherited this event will block
+ * in sync_child_event if it goes to exit, thus satisfying the
+ * task existence requirements of perf_event_enable/disable.
  */
-static void perf_counter_for_each_child(struct perf_counter *counter,
-                                        void (*func)(struct perf_counter *))
+static void perf_event_for_each_child(struct perf_event *event,
+                                        void (*func)(struct perf_event *))
 {
-        struct perf_counter *child;
+        struct perf_event *child;
 
-        WARN_ON_ONCE(counter->ctx->parent_ctx);
-        mutex_lock(&counter->child_mutex);
-        func(counter);
-        list_for_each_entry(child, &counter->child_list, child_list)
+        WARN_ON_ONCE(event->ctx->parent_ctx);
+        mutex_lock(&event->child_mutex);
+        func(event);
+        list_for_each_entry(child, &event->child_list, child_list)
                 func(child);
-        mutex_unlock(&counter->child_mutex);
+        mutex_unlock(&event->child_mutex);
 }
 
-static void perf_counter_for_each(struct perf_counter *counter,
-                                  void (*func)(struct perf_counter *))
+static void perf_event_for_each(struct perf_event *event,
+                                  void (*func)(struct perf_event *))
 {
-        struct perf_counter_context *ctx = counter->ctx;
-        struct perf_counter *sibling;
+        struct perf_event_context *ctx = event->ctx;
+        struct perf_event *sibling;
 
         WARN_ON_ONCE(ctx->parent_ctx);
         mutex_lock(&ctx->mutex);
-        counter = counter->group_leader;
+        event = event->group_leader;
 
-        perf_counter_for_each_child(counter, func);
-        func(counter);
-        list_for_each_entry(sibling, &counter->sibling_list, group_entry)
-                perf_counter_for_each_child(counter, func);
+        perf_event_for_each_child(event, func);
+        func(event);
+        list_for_each_entry(sibling, &event->sibling_list, group_entry)
+                perf_event_for_each_child(event, func);
         mutex_unlock(&ctx->mutex);
 }
 
-static int perf_counter_period(struct perf_counter *counter, u64 __user *arg)
+static int perf_event_period(struct perf_event *event, u64 __user *arg)
 {
-        struct perf_counter_context *ctx = counter->ctx;
+        struct perf_event_context *ctx = event->ctx;
         unsigned long size;
         int ret = 0;
         u64 value;
 
-        if (!counter->attr.sample_period)
+        if (!event->attr.sample_period)
                 return -EINVAL;
 
         size = copy_from_user(&value, arg, sizeof(value));
@@ -1970,16 +1970,16 @@ static int perf_counter_period(struct perf_counter *counter, u64 __user *arg)
                 return -EINVAL;
 
         spin_lock_irq(&ctx->lock);
-        if (counter->attr.freq) {
-                if (value > sysctl_perf_counter_sample_rate) {
+        if (event->attr.freq) {
+                if (value > sysctl_perf_event_sample_rate) {
                         ret = -EINVAL;
                         goto unlock;
                 }
 
-                counter->attr.sample_freq = value;
+                event->attr.sample_freq = value;
         } else {
-                counter->attr.sample_period = value;
-                counter->hw.sample_period = value;
+                event->attr.sample_period = value;
+                event->hw.sample_period = value;
         }
 unlock:
         spin_unlock_irq(&ctx->lock);
@@ -1987,80 +1987,80 @@ unlock:
         return ret;
 }
 
-int perf_counter_set_output(struct perf_counter *counter, int output_fd);
+int perf_event_set_output(struct perf_event *event, int output_fd);
 
 static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
-        struct perf_counter *counter = file->private_data;
-        void (*func)(struct perf_counter *);
+        struct perf_event *event = file->private_data;
+        void (*func)(struct perf_event *);
         u32 flags = arg;
 
         switch (cmd) {
-        case PERF_COUNTER_IOC_ENABLE:
-                func = perf_counter_enable;
+        case PERF_EVENT_IOC_ENABLE:
+                func = perf_event_enable;
                 break;
-        case PERF_COUNTER_IOC_DISABLE:
-                func = perf_counter_disable;
+        case PERF_EVENT_IOC_DISABLE:
+                func = perf_event_disable;
                 break;
-        case PERF_COUNTER_IOC_RESET:
-                func = perf_counter_reset;
+        case PERF_EVENT_IOC_RESET:
+                func = perf_event_reset;
                 break;
 
-        case PERF_COUNTER_IOC_REFRESH:
-                return perf_counter_refresh(counter, arg);
+        case PERF_EVENT_IOC_REFRESH:
+                return perf_event_refresh(event, arg);
 
-        case PERF_COUNTER_IOC_PERIOD:
-                return perf_counter_period(counter, (u64 __user *)arg);
+        case PERF_EVENT_IOC_PERIOD:
+                return perf_event_period(event, (u64 __user *)arg);
 
-        case PERF_COUNTER_IOC_SET_OUTPUT:
-                return perf_counter_set_output(counter, arg);
+        case PERF_EVENT_IOC_SET_OUTPUT:
+                return perf_event_set_output(event, arg);
 
         default:
                 return -ENOTTY;
         }
 
         if (flags & PERF_IOC_FLAG_GROUP)
-                perf_counter_for_each(counter, func);
+                perf_event_for_each(event, func);
         else
-                perf_counter_for_each_child(counter, func);
+                perf_event_for_each_child(event, func);
 
         return 0;
 }
 
-int perf_counter_task_enable(void)
+int perf_event_task_enable(void)
 {
-        struct perf_counter *counter;
+        struct perf_event *event;
 
-        mutex_lock(&current->perf_counter_mutex);
-        list_for_each_entry(counter, &current->perf_counter_list, owner_entry)
-                perf_counter_for_each_child(counter, perf_counter_enable);
-        mutex_unlock(&current->perf_counter_mutex);
+        mutex_lock(&current->perf_event_mutex);
+        list_for_each_entry(event, &current->perf_event_list, owner_entry)
+                perf_event_for_each_child(event, perf_event_enable);
+        mutex_unlock(&current->perf_event_mutex);
 
         return 0;
 }
 
-int perf_counter_task_disable(void)
+int perf_event_task_disable(void)
 {
-        struct perf_counter *counter;
+        struct perf_event *event;
 
-        mutex_lock(&current->perf_counter_mutex);
-        list_for_each_entry(counter, &current->perf_counter_list, owner_entry)
-                perf_counter_for_each_child(counter, perf_counter_disable);
-        mutex_unlock(&current->perf_counter_mutex);
+        mutex_lock(&current->perf_event_mutex);
+        list_for_each_entry(event, &current->perf_event_list, owner_entry)
+                perf_event_for_each_child(event, perf_event_disable);
+        mutex_unlock(&current->perf_event_mutex);
 
         return 0;
 }
 
-#ifndef PERF_COUNTER_INDEX_OFFSET
-# define PERF_COUNTER_INDEX_OFFSET 0
+#ifndef PERF_EVENT_INDEX_OFFSET
+# define PERF_EVENT_INDEX_OFFSET 0
 #endif
 
-static int perf_counter_index(struct perf_counter *counter)
+static int perf_event_index(struct perf_event *event)
 {
-        if (counter->state != PERF_COUNTER_STATE_ACTIVE)
+        if (event->state != PERF_EVENT_STATE_ACTIVE)
                 return 0;
 
-        return counter->hw.idx + 1 - PERF_COUNTER_INDEX_OFFSET;
+        return event->hw.idx + 1 - PERF_EVENT_INDEX_OFFSET;
 }
 
 /*
@@ -2068,13 +2068,13 @@ static int perf_counter_index(struct perf_counter *counter)
  * the seqlock logic goes bad. We can not serialize this because the arch
  * code calls this from NMI context.
  */
-void perf_counter_update_userpage(struct perf_counter *counter)
+void perf_event_update_userpage(struct perf_event *event)
 {
-        struct perf_counter_mmap_page *userpg;
+        struct perf_event_mmap_page *userpg;
         struct perf_mmap_data *data;
 
         rcu_read_lock();
-        data = rcu_dereference(counter->data);
+        data = rcu_dereference(event->data);
         if (!data)
                 goto unlock;
 
@@ -2087,16 +2087,16 @@ void perf_counter_update_userpage(struct perf_counter *counter)
         preempt_disable();
         ++userpg->lock;
         barrier();
-        userpg->index = perf_counter_index(counter);
-        userpg->offset = atomic64_read(&counter->count);
-        if (counter->state == PERF_COUNTER_STATE_ACTIVE)
-                userpg->offset -= atomic64_read(&counter->hw.prev_count);
+        userpg->index = perf_event_index(event);
+        userpg->offset = atomic64_read(&event->count);
+        if (event->state == PERF_EVENT_STATE_ACTIVE)
+                userpg->offset -= atomic64_read(&event->hw.prev_count);
 
-        userpg->time_enabled = counter->total_time_enabled +
-                        atomic64_read(&counter->child_total_time_enabled);
+        userpg->time_enabled = event->total_time_enabled +
+                        atomic64_read(&event->child_total_time_enabled);
 
-        userpg->time_running = counter->total_time_running +
-                        atomic64_read(&counter->child_total_time_running);
+        userpg->time_running = event->total_time_running +
+                        atomic64_read(&event->child_total_time_running);
 
         barrier();
         ++userpg->lock;
@@ -2107,7 +2107,7 @@ unlock:
 
 static int perf_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
-        struct perf_counter *counter = vma->vm_file->private_data;
+        struct perf_event *event = vma->vm_file->private_data;
         struct perf_mmap_data *data;
         int ret = VM_FAULT_SIGBUS;
 
@@ -2118,7 +2118,7 @@ static int perf_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
         }
 
         rcu_read_lock();
-        data = rcu_dereference(counter->data);
+        data = rcu_dereference(event->data);
         if (!data)
                 goto unlock;
 
@@ -2147,13 +2147,13 @@ unlock:
         return ret;
 }
 
-static int perf_mmap_data_alloc(struct perf_counter *counter, int nr_pages)
+static int perf_mmap_data_alloc(struct perf_event *event, int nr_pages)
 {
         struct perf_mmap_data *data;
         unsigned long size;
         int i;
 
-        WARN_ON(atomic_read(&counter->mmap_count));
+        WARN_ON(atomic_read(&event->mmap_count));
 
         size = sizeof(struct perf_mmap_data);
         size += nr_pages * sizeof(void *);
@@ -2175,14 +2175,14 @@ static int perf_mmap_data_alloc(struct perf_counter *counter, int nr_pages)
         data->nr_pages = nr_pages;
         atomic_set(&data->lock, -1);
 
-        if (counter->attr.watermark) {
+        if (event->attr.watermark) {
                 data->watermark = min_t(long, PAGE_SIZE * nr_pages,
-                                      counter->attr.wakeup_watermark);
+                                      event->attr.wakeup_watermark);
         }
         if (!data->watermark)
                 data->watermark = max(PAGE_SIZE, PAGE_SIZE * nr_pages / 4);
 
-        rcu_assign_pointer(counter->data, data);
+        rcu_assign_pointer(event->data, data);
 
         return 0;
 
@@ -2221,35 +2221,35 @@ static void __perf_mmap_data_free(struct rcu_head *rcu_head)
         kfree(data);
 }
 
-static void perf_mmap_data_free(struct perf_counter *counter)
+static void perf_mmap_data_free(struct perf_event *event)
 {
-        struct perf_mmap_data *data = counter->data;
+        struct perf_mmap_data *data = event->data;
 
-        WARN_ON(atomic_read(&counter->mmap_count));
+        WARN_ON(atomic_read(&event->mmap_count));
 
-        rcu_assign_pointer(counter->data, NULL);
+        rcu_assign_pointer(event->data, NULL);
         call_rcu(&data->rcu_head, __perf_mmap_data_free);
 }
 
 static void perf_mmap_open(struct vm_area_struct *vma)
 {
-        struct perf_counter *counter = vma->vm_file->private_data;
+        struct perf_event *event = vma->vm_file->private_data;
 
-        atomic_inc(&counter->mmap_count);
+        atomic_inc(&event->mmap_count);
 }
 
 static void perf_mmap_close(struct vm_area_struct *vma)
 {
-        struct perf_counter *counter = vma->vm_file->private_data;
+        struct perf_event *event = vma->vm_file->private_data;
 
-        WARN_ON_ONCE(counter->ctx->parent_ctx);
-        if (atomic_dec_and_mutex_lock(&counter->mmap_count, &counter->mmap_mutex)) {
+        WARN_ON_ONCE(event->ctx->parent_ctx);
+        if (atomic_dec_and_mutex_lock(&event->mmap_count, &event->mmap_mutex)) {
                 struct user_struct *user = current_user();
 
-                atomic_long_sub(counter->data->nr_pages + 1, &user->locked_vm);
-                vma->vm_mm->locked_vm -= counter->data->nr_locked;
-                perf_mmap_data_free(counter);
-                mutex_unlock(&counter->mmap_mutex);
+                atomic_long_sub(event->data->nr_pages + 1, &user->locked_vm);
+                vma->vm_mm->locked_vm -= event->data->nr_locked;
+                perf_mmap_data_free(event);
+                mutex_unlock(&event->mmap_mutex);
         }
 }
 
@@ -2262,7 +2262,7 @@ static struct vm_operations_struct perf_mmap_vmops = {
 
 static int perf_mmap(struct file *file, struct vm_area_struct *vma)
 {
-        struct perf_counter *counter = file->private_data;
+        struct perf_event *event = file->private_data;
         unsigned long user_locked, user_lock_limit;
         struct user_struct *user = current_user();
         unsigned long locked, lock_limit;
@@ -2290,21 +2290,21 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma)
         if (vma->vm_pgoff != 0)
                 return -EINVAL;
 
-        WARN_ON_ONCE(counter->ctx->parent_ctx);
-        mutex_lock(&counter->mmap_mutex);
-        if (counter->output) {
+        WARN_ON_ONCE(event->ctx->parent_ctx);
+        mutex_lock(&event->mmap_mutex);
+        if (event->output) {
                 ret = -EINVAL;
                 goto unlock;
         }
 
-        if (atomic_inc_not_zero(&counter->mmap_count)) {
-                if (nr_pages != counter->data->nr_pages)
+        if (atomic_inc_not_zero(&event->mmap_count)) {
+                if (nr_pages != event->data->nr_pages)
                         ret = -EINVAL;
                 goto unlock;
         }
 
         user_extra = nr_pages + 1;
-        user_lock_limit = sysctl_perf_counter_mlock >> (PAGE_SHIFT - 10);
+        user_lock_limit = sysctl_perf_event_mlock >> (PAGE_SHIFT - 10);
 
         /*
          * Increase the limit linearly with more CPUs:
@@ -2327,20 +2327,20 @@ static int perf_mmap(struct file *file, struct vm_area_struct *vma)
                 goto unlock;
         }
 
-        WARN_ON(counter->data);
-        ret = perf_mmap_data_alloc(counter, nr_pages);
+        WARN_ON(event->data);
+        ret = perf_mmap_data_alloc(event, nr_pages);
         if (ret)
                 goto unlock;
 
-        atomic_set(&counter->mmap_count, 1);
+        atomic_set(&event->mmap_count, 1);
         atomic_long_add(user_extra, &user->locked_vm);
         vma->vm_mm->locked_vm += extra;
-        counter->data->nr_locked = extra;
+        event->data->nr_locked = extra;
         if (vma->vm_flags & VM_WRITE)
-                counter->data->writable = 1;
+                event->data->writable = 1;
 
 unlock:
-        mutex_unlock(&counter->mmap_mutex);
+        mutex_unlock(&event->mmap_mutex);
 
         vma->vm_flags |= VM_RESERVED;
         vma->vm_ops = &perf_mmap_vmops;
@@ -2351,11 +2351,11 @@ unlock:
 static int perf_fasync(int fd, struct file *filp, int on)
 {
         struct inode *inode = filp->f_path.dentry->d_inode;
-        struct perf_counter *counter = filp->private_data;
+        struct perf_event *event = filp->private_data;
         int retval;
 
         mutex_lock(&inode->i_mutex);
-        retval = fasync_helper(fd, filp, on, &counter->fasync);
+        retval = fasync_helper(fd, filp, on, &event->fasync);
         mutex_unlock(&inode->i_mutex);
 
         if (retval < 0)
@@ -2375,19 +2375,19 @@ static const struct file_operations perf_fops = {
 };
 
 /*
- * Perf counter wakeup
+ * Perf event wakeup
  *
  * If there's data, ensure we set the poll() state and publish everything
  * to user-space before waking everybody up.
  */
 
-void perf_counter_wakeup(struct perf_counter *counter)
+void perf_event_wakeup(struct perf_event *event)
 {
-        wake_up_all(&counter->waitq);
+        wake_up_all(&event->waitq);
 
-        if (counter->pending_kill) {
-                kill_fasync(&counter->fasync, SIGIO, counter->pending_kill);
-                counter->pending_kill = 0;
+        if (event->pending_kill) {
+                kill_fasync(&event->fasync, SIGIO, event->pending_kill);
+                event->pending_kill = 0;
         }
 }
 
@@ -2400,19 +2400,19 @@ void perf_counter_wakeup(struct perf_counter *counter)
  * single linked list and use cmpxchg() to add entries lockless.
  */
 
-static void perf_pending_counter(struct perf_pending_entry *entry)
+static void perf_pending_event(struct perf_pending_entry *entry)
 {
-        struct perf_counter *counter = container_of(entry,
-                        struct perf_counter, pending);
+        struct perf_event *event = container_of(entry,
+                        struct perf_event, pending);
 
-        if (counter->pending_disable) {
-                counter->pending_disable = 0;
-                __perf_counter_disable(counter);
+        if (event->pending_disable) {
+                event->pending_disable = 0;
+                __perf_event_disable(event);
         }
 
-        if (counter->pending_wakeup) {
-                counter->pending_wakeup = 0;
-                perf_counter_wakeup(counter);
+        if (event->pending_wakeup) {
+                event->pending_wakeup = 0;
+                perf_event_wakeup(event);
         }
 }
 
@@ -2438,7 +2438,7 @@ static void perf_pending_queue(struct perf_pending_entry *entry,
                 entry->next = *head;
         } while (cmpxchg(head, entry->next, entry) != entry->next);
 
-        set_perf_counter_pending();
+        set_perf_event_pending();
 
         put_cpu_var(perf_pending_head);
 }
@@ -2471,7 +2471,7 @@ static int __perf_pending_run(void)
         return nr;
 }
 
-static inline int perf_not_pending(struct perf_counter *counter)
+static inline int perf_not_pending(struct perf_event *event)
 {
         /*
          * If we flush on whatever cpu we run, there is a chance we don't
@@ -2486,15 +2486,15 @@ static inline int perf_not_pending(struct perf_counter *counter)
          * so that we do not miss the wakeup. -- see perf_pending_handle()
          */
         smp_rmb();
-        return counter->pending.next == NULL;
+        return event->pending.next == NULL;
 }
 
-static void perf_pending_sync(struct perf_counter *counter)
+static void perf_pending_sync(struct perf_event *event)
 {
-        wait_event(counter->waitq, perf_not_pending(counter));
+        wait_event(event->waitq, perf_not_pending(event));
 }
 
-void perf_counter_do_pending(void)
+void perf_event_do_pending(void)
 {
         __perf_pending_run();
 }
@@ -2535,25 +2535,25 @@ static void perf_output_wakeup(struct perf_output_handle *handle)
         atomic_set(&handle->data->poll, POLL_IN);
 
         if (handle->nmi) {
-                handle->counter->pending_wakeup = 1;
-                perf_pending_queue(&handle->counter->pending,
-                                   perf_pending_counter);
+                handle->event->pending_wakeup = 1;
+                perf_pending_queue(&handle->event->pending,
+                                   perf_pending_event);
         } else
-                perf_counter_wakeup(handle->counter);
+                perf_event_wakeup(handle->event);
 }
 
 /*
  * Curious locking construct.
  *
- * We need to ensure a later event doesn't publish a head when a former
- * event isn't done writing. However since we need to deal with NMIs we
+ * We need to ensure a later event_id doesn't publish a head when a former
+ * event_id isn't done writing. However since we need to deal with NMIs we
  * cannot fully serialize things.
  *
  * What we do is serialize between CPUs so we only have to deal with NMI
  * nesting on a single CPU.
  *
  * We only publish the head (and generate a wakeup) when the outer-most
- * event completes.
+ * event_id completes.
  */
 static void perf_output_lock(struct perf_output_handle *handle)
 {
@@ -2657,10 +2657,10 @@ void perf_output_copy(struct perf_output_handle *handle,
 }
 
 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)
 {
-        struct perf_counter *output_counter;
+        struct perf_event *output_event;
         struct perf_mmap_data *data;
         unsigned long tail, offset, head;
         int have_lost;
@@ -2672,21 +2672,21 @@ int perf_output_begin(struct perf_output_handle *handle,
 
         rcu_read_lock();
         /*
-         * For inherited counters we send all the output towards the parent.
+         * For inherited events we send all the output towards the parent.
          */
-        if (counter->parent)
-                counter = counter->parent;
+        if (event->parent)
+                event = event->parent;
 
-        output_counter = rcu_dereference(counter->output);
-        if (output_counter)
-                counter = output_counter;
+        output_event = rcu_dereference(event->output);
+        if (output_event)
+                event = output_event;
 
-        data = rcu_dereference(counter->data);
+        data = rcu_dereference(event->data);
         if (!data)
                 goto out;
 
         handle->data    = data;
-        handle->counter = counter;
+        handle->event   = event;
         handle->nmi     = nmi;
         handle->sample  = sample;
 
@@ -2720,10 +2720,10 @@ int perf_output_begin(struct perf_output_handle *handle,
                 atomic_set(&data->wakeup, 1);
 
         if (have_lost) {
-                lost_event.header.type = PERF_EVENT_LOST;
+                lost_event.header.type = PERF_RECORD_LOST;
                 lost_event.header.misc = 0;
                 lost_event.header.size = sizeof(lost_event);
-                lost_event.id          = counter->id;
+                lost_event.id          = event->id;
                 lost_event.lost        = atomic_xchg(&data->lost, 0);
 
                 perf_output_put(handle, lost_event);
@@ -2742,10 +2742,10 @@ out:
 
 void perf_output_end(struct perf_output_handle *handle)
 {
-        struct perf_counter *counter = handle->counter;
+        struct perf_event *event = handle->event;
         struct perf_mmap_data *data = handle->data;
 
-        int wakeup_events = counter->attr.wakeup_events;
+        int wakeup_events = event->attr.wakeup_events;
 
         if (handle->sample && wakeup_events) {
                 int events = atomic_inc_return(&data->events);
@@ -2759,58 +2759,58 @@ void perf_output_end(struct perf_output_handle *handle)
         rcu_read_unlock();
 }
 
-static u32 perf_counter_pid(struct perf_counter *counter, struct task_struct *p)
+static u32 perf_event_pid(struct perf_event *event, struct task_struct *p)
 {
         /*
-         * only top level counters have the pid namespace they were created in
+         * only top level events have the pid namespace they were created in
          */
-        if (counter->parent)
-                counter = counter->parent;
+        if (event->parent)
+                event = event->parent;
 
-        return task_tgid_nr_ns(p, counter->ns);
+        return task_tgid_nr_ns(p, event->ns);
 }
 
-static u32 perf_counter_tid(struct perf_counter *counter, struct task_struct *p)
+static u32 perf_event_tid(struct perf_event *event, struct task_struct *p)
 {
         /*
-         * only top level counters have the pid namespace they were created in
+         * only top level events have the pid namespace they were created in
          */
-        if (counter->parent)
-                counter = counter->parent;
+        if (event->parent)
+                event = event->parent;
 
-        return task_pid_nr_ns(p, counter->ns);
+        return task_pid_nr_ns(p, event->ns);
 }
 
 static void perf_output_read_one(struct perf_output_handle *handle,
-                                 struct perf_counter *counter)
+                                 struct perf_event *event)
 {
-        u64 read_format = counter->attr.read_format;
+        u64 read_format = event->attr.read_format;
         u64 values[4];
         int n = 0;
 
-        values[n++] = atomic64_read(&counter->count);
+        values[n++] = atomic64_read(&event->count);
         if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
-                values[n++] = counter->total_time_enabled +
-                        atomic64_read(&counter->child_total_time_enabled);
+                values[n++] = event->total_time_enabled +
+                        atomic64_read(&event->child_total_time_enabled);
         }
         if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
-                values[n++] = counter->total_time_running +
-                        atomic64_read(&counter->child_total_time_running);
+                values[n++] = event->total_time_running +
+                        atomic64_read(&event->child_total_time_running);
         }
         if (read_format & PERF_FORMAT_ID)
-                values[n++] = primary_counter_id(counter);
+                values[n++] = primary_event_id(event);
 
         perf_output_copy(handle, values, n * sizeof(u64));
 }
 
 /*
- * XXX PERF_FORMAT_GROUP vs inherited counters seems difficult.
+ * XXX PERF_FORMAT_GROUP vs inherited events seems difficult.
  */
 static void perf_output_read_group(struct perf_output_handle *handle,
-                            struct perf_counter *counter)
+                            struct perf_event *event)
 {
-        struct perf_counter *leader = counter->group_leader, *sub;
-        u64 read_format = counter->attr.read_format;
+        struct perf_event *leader = event->group_leader, *sub;
+        u64 read_format = event->attr.read_format;
         u64 values[5];
         int n = 0;
 
@@ -2822,42 +2822,42 @@ static void perf_output_read_group(struct perf_output_handle *handle,
         if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
                 values[n++] = leader->total_time_running;
 
-        if (leader != counter)
+        if (leader != event)
                 leader->pmu->read(leader);
 
         values[n++] = atomic64_read(&leader->count);
         if (read_format & PERF_FORMAT_ID)
-                values[n++] = primary_counter_id(leader);
+                values[n++] = primary_event_id(leader);
 
         perf_output_copy(handle, values, n * sizeof(u64));
 
         list_for_each_entry(sub, &leader->sibling_list, group_entry) {
                 n = 0;
 
-                if (sub != counter)
+                if (sub != event)
                         sub->pmu->read(sub);
 
                 values[n++] = atomic64_read(&sub->count);
                 if (read_format & PERF_FORMAT_ID)
-                        values[n++] = primary_counter_id(sub);
+                        values[n++] = primary_event_id(sub);
 
                 perf_output_copy(handle, values, n * sizeof(u64));
         }
 }
 
 static void perf_output_read(struct perf_output_handle *handle,
-                             struct perf_counter *counter)
+                             struct perf_event *event)
 {
-        if (counter->attr.read_format & PERF_FORMAT_GROUP)
-                perf_output_read_group(handle, counter);
+        if (event->attr.read_format & PERF_FORMAT_GROUP)
+                perf_output_read_group(handle, event);
         else
-                perf_output_read_one(handle, counter);
+                perf_output_read_one(handle, event);
 }
 
 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)
 {
         u64 sample_type = data->type;
 
@@ -2888,7 +2888,7 @@ void perf_output_sample(struct perf_output_handle *handle,
                 perf_output_put(handle, data->period);
 
         if (sample_type & PERF_SAMPLE_READ)
-                perf_output_read(handle, counter);
+                perf_output_read(handle, event);
 
         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
                 if (data->callchain) {
@@ -2926,14 +2926,14 @@ void perf_output_sample(struct perf_output_handle *handle,
 
 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)
 {
-        u64 sample_type = counter->attr.sample_type;
+        u64 sample_type = event->attr.sample_type;
 
         data->type = sample_type;
 
-        header->type = PERF_EVENT_SAMPLE;
+        header->type = PERF_RECORD_SAMPLE;
         header->size = sizeof(*header);
 
         header->misc = 0;
@@ -2947,8 +2947,8 @@ void perf_prepare_sample(struct perf_event_header *header,
 
         if (sample_type & PERF_SAMPLE_TID) {
                 /* namespace issues */
-                data->tid_entry.pid = perf_counter_pid(counter, current);
-                data->tid_entry.tid = perf_counter_tid(counter, current);
+                data->tid_entry.pid = perf_event_pid(event, current);
+                data->tid_entry.tid = perf_event_tid(event, current);
 
                 header->size += sizeof(data->tid_entry);
         }
@@ -2963,13 +2963,13 @@ void perf_prepare_sample(struct perf_event_header *header,
                 header->size += sizeof(data->addr);
 
         if (sample_type & PERF_SAMPLE_ID) {
-                data->id = primary_counter_id(counter);
+                data->id = primary_event_id(event);
 
                 header->size += sizeof(data->id);
         }
 
         if (sample_type & PERF_SAMPLE_STREAM_ID) {
-                data->stream_id = counter->id;
+                data->stream_id = event->id;
 
                 header->size += sizeof(data->stream_id);
         }
@@ -2985,7 +2985,7 @@ void perf_prepare_sample(struct perf_event_header *header,
                 header->size += sizeof(data->period);
 
         if (sample_type & PERF_SAMPLE_READ)
-                header->size += perf_counter_read_size(counter);
+                header->size += perf_event_read_size(event);
 
         if (sample_type & PERF_SAMPLE_CALLCHAIN) {
                 int size = 1;
@@ -3011,25 +3011,25 @@ void perf_prepare_sample(struct perf_event_header *header,
         }
 }
 
-static void perf_counter_output(struct perf_counter *counter, int nmi,
+static void perf_event_output(struct perf_event *event, int nmi,
                                 struct perf_sample_data *data,
                                 struct pt_regs *regs)
 {
         struct perf_output_handle handle;
         struct perf_event_header header;
 
-        perf_prepare_sample(&header, data, counter, regs);
+        perf_prepare_sample(&header, data, event, regs);
 
-        if (perf_output_begin(&handle, counter, header.size, nmi, 1))
+        if (perf_output_begin(&handle, event, header.size, nmi, 1))
                 return;
 
-        perf_output_sample(&handle, &header, data, counter);
+        perf_output_sample(&handle, &header, data, event);
 
         perf_output_end(&handle);
 }
 
 /*
- * read event
+ * read event_id
  */
 
 struct perf_read_event {
@@ -3040,27 +3040,27 @@ struct perf_read_event {
 };
 
 static void
-perf_counter_read_event(struct perf_counter *counter,
+perf_event_read_event(struct perf_event *event,
                         struct task_struct *task)
 {
         struct perf_output_handle handle;
         struct perf_read_event read_event = {
                 .header = {
-                        .type = PERF_EVENT_READ,
+                        .type = PERF_RECORD_READ,
                         .misc = 0,
-                        .size = sizeof(read_event) + perf_counter_read_size(counter),
+                        .size = sizeof(read_event) + perf_event_read_size(event),
                 },
-                .pid = perf_counter_pid(counter, task),
-                .tid = perf_counter_tid(counter, task),
+                .pid = perf_event_pid(event, task),
+                .tid = perf_event_tid(event, task),
         };
         int ret;
 
-        ret = perf_output_begin(&handle, counter, read_event.header.size, 0, 0);
+        ret = perf_output_begin(&handle, event, read_event.header.size, 0, 0);
         if (ret)
                 return;
 
         perf_output_put(&handle, read_event);
-        perf_output_read(&handle, counter);
+        perf_output_read(&handle, event);
 
         perf_output_end(&handle);
 }
@@ -3073,7 +3073,7 @@ perf_counter_read_event(struct perf_counter *counter,
 
 struct perf_task_event {
         struct task_struct              *task;
-        struct perf_counter_context     *task_ctx;
+        struct perf_event_context       *task_ctx;
 
         struct {
                 struct perf_event_header        header;
@@ -3083,10 +3083,10 @@ struct perf_task_event {
                 u32                             tid;
                 u32                             ptid;
                 u64                             time;
-        } event;
+        } event_id;
 };
 
-static void perf_counter_task_output(struct perf_counter *counter,
+static void perf_event_task_output(struct perf_event *event,
                                      struct perf_task_event *task_event)
 {
         struct perf_output_handle handle;
@@ -3094,85 +3094,85 @@ static void perf_counter_task_output(struct perf_counter *counter,
         struct task_struct *task = task_event->task;
         int ret;
 
-        size  = task_event->event.header.size;
-        ret = perf_output_begin(&handle, counter, size, 0, 0);
+        size  = task_event->event_id.header.size;
+        ret = perf_output_begin(&handle, event, size, 0, 0);
 
         if (ret)
                 return;
 
-        task_event->event.pid = perf_counter_pid(counter, task);
-        task_event->event.ppid = perf_counter_pid(counter, current);
+        task_event->event_id.pid = perf_event_pid(event, task);
+        task_event->event_id.ppid = perf_event_pid(event, current);
 
-        task_event->event.tid = perf_counter_tid(counter, task);
-        task_event->event.ptid = perf_counter_tid(counter, current);
+        task_event->event_id.tid = perf_event_tid(event, task);
+        task_event->event_id.ptid = perf_event_tid(event, current);
 
-        task_event->event.time = perf_clock();
+        task_event->event_id.time = perf_clock();
 
-        perf_output_put(&handle, task_event->event);
+        perf_output_put(&handle, task_event->event_id);
 
         perf_output_end(&handle);
 }
 
-static int perf_counter_task_match(struct perf_counter *counter)
+static int perf_event_task_match(struct perf_event *event)
 {
-        if (counter->attr.comm || counter->attr.mmap || counter->attr.task)
+        if (event->attr.comm || event->attr.mmap || event->attr.task)
                 return 1;
 
         return 0;
 }
 
-static void perf_counter_task_ctx(struct perf_counter_context *ctx,
+static void perf_event_task_ctx(struct perf_event_context *ctx,
                                   struct perf_task_event *task_event)
 {
-        struct perf_counter *counter;
+        struct perf_event *event;
 
         if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list))
                 return;
 
         rcu_read_lock();
-        list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) {
-                if (perf_counter_task_match(counter))
-                        perf_counter_task_output(counter, task_event);
+        list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
+                if (perf_event_task_match(event))
+                        perf_event_task_output(event, task_event);
         }
         rcu_read_unlock();
 }
 
-static void perf_counter_task_event(struct perf_task_event *task_event)
+static void perf_event_task_event(struct perf_task_event *task_event)
 {
         struct perf_cpu_context *cpuctx;
-        struct perf_counter_context *ctx = task_event->task_ctx;
+        struct perf_event_context *ctx = task_event->task_ctx;
 
         cpuctx = &get_cpu_var(perf_cpu_context);
-        perf_counter_task_ctx(&cpuctx->ctx, task_event);
+        perf_event_task_ctx(&cpuctx->ctx, task_event);
         put_cpu_var(perf_cpu_context);
 
         rcu_read_lock();
         if (!ctx)
-                ctx = rcu_dereference(task_event->task->perf_counter_ctxp);
+                ctx = rcu_dereference(task_event->task->perf_event_ctxp);
         if (ctx)
-                perf_counter_task_ctx(ctx, task_event);
+                perf_event_task_ctx(ctx, task_event);
         rcu_read_unlock();
 }
 
-static void perf_counter_task(struct task_struct *task,
-                              struct perf_counter_context *task_ctx,
+static void perf_event_task(struct task_struct *task,
+                              struct perf_event_context *task_ctx,
                               int new)
 {
         struct perf_task_event task_event;
 
-        if (!atomic_read(&nr_comm_counters) &&
-            !atomic_read(&nr_mmap_counters) &&
-            !atomic_read(&nr_task_counters))
+        if (!atomic_read(&nr_comm_events) &&
+            !atomic_read(&nr_mmap_events) &&
+            !atomic_read(&nr_task_events))
                 return;
 
         task_event = (struct perf_task_event){
                 .task     = task,
                 .task_ctx = task_ctx,
-                .event    = {
+                .event_id    = {
                         .header = {
-                                .type = new ? PERF_EVENT_FORK : PERF_EVENT_EXIT,
+                                .type = new ? PERF_RECORD_FORK : PERF_RECORD_EXIT,
                                 .misc = 0,
-                                .size = sizeof(task_event.event),
+                                .size = sizeof(task_event.event_id),
                         },
                         /* .pid  */
                         /* .ppid */
@@ -3181,12 +3181,12 @@ static void perf_counter_task(struct task_struct *task,
                 },
         };
 
-        perf_counter_task_event(&task_event);
+        perf_event_task_event(&task_event);
 }
 
-void perf_counter_fork(struct task_struct *task)
+void perf_event_fork(struct task_struct *task)
 {
-        perf_counter_task(task, NULL, 1);
+        perf_event_task(task, NULL, 1);
 }
 
 /*
@@ -3203,56 +3203,56 @@ struct perf_comm_event {
 
                 u32                             pid;
                 u32                             tid;
-        } event;
+        } event_id;
 };
 
-static void perf_counter_comm_output(struct perf_counter *counter,
+static void perf_event_comm_output(struct perf_event *event,
                                      struct perf_comm_event *comm_event)
 {
         struct perf_output_handle handle;
-        int size = comm_event->event.header.size;
-        int ret = perf_output_begin(&handle, counter, size, 0, 0);
+        int size = comm_event->event_id.header.size;
+        int ret = perf_output_begin(&handle, event, size, 0, 0);
 
         if (ret)
                 return;
 
-        comm_event->event.pid = perf_counter_pid(counter, comm_event->task);
-        comm_event->event.tid = perf_counter_tid(counter, comm_event->task);
+        comm_event->event_id.pid = perf_event_pid(event, comm_event->task);
+        comm_event->event_id.tid = perf_event_tid(event, comm_event->task);
 
-        perf_output_put(&handle, comm_event->event);
+        perf_output_put(&handle, comm_event->event_id);
         perf_output_copy(&handle, comm_event->comm,
                                    comm_event->comm_size);
         perf_output_end(&handle);
 }
 
-static int perf_counter_comm_match(struct perf_counter *counter)
+static int perf_event_comm_match(struct perf_event *event)
 {
-        if (counter->attr.comm)
+        if (event->attr.comm)
                 return 1;
 
         return 0;
 }
 
-static void perf_counter_comm_ctx(struct perf_counter_context *ctx,
+static void perf_event_comm_ctx(struct perf_event_context *ctx,
                                   struct perf_comm_event *comm_event)
 {
-        struct perf_counter *counter;
+        struct perf_event *event;
 
         if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list))
                 return;
 
         rcu_read_lock();
-        list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) {
-                if (perf_counter_comm_match(counter))
-                        perf_counter_comm_output(counter, comm_event);
+        list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
+                if (perf_event_comm_match(event))
+                        perf_event_comm_output(event, comm_event);
         }
         rcu_read_unlock();
 }
 
-static void perf_counter_comm_event(struct perf_comm_event *comm_event)
+static void perf_event_comm_event(struct perf_comm_event *comm_event)
 {
         struct perf_cpu_context *cpuctx;
-        struct perf_counter_context *ctx;
+        struct perf_event_context *ctx;
         unsigned int size;
         char comm[TASK_COMM_LEN];
 
@@ -3263,10 +3263,10 @@ static void perf_counter_comm_event(struct perf_comm_event *comm_event)
         comm_event->comm = comm;
         comm_event->comm_size = size;
 
-        comm_event->event.header.size = sizeof(comm_event->event) + size;
+        comm_event->event_id.header.size = sizeof(comm_event->event_id) + size;
 
         cpuctx = &get_cpu_var(perf_cpu_context);
-        perf_counter_comm_ctx(&cpuctx->ctx, comm_event);
+        perf_event_comm_ctx(&cpuctx->ctx, comm_event);
         put_cpu_var(perf_cpu_context);
 
         rcu_read_lock();
@@ -3274,29 +3274,29 @@ static void perf_counter_comm_event(struct perf_comm_event *comm_event)
          * doesn't really matter which of the child contexts the
          * events ends up in.
          */
-        ctx = rcu_dereference(current->perf_counter_ctxp);
+        ctx = rcu_dereference(current->perf_event_ctxp);
         if (ctx)
-                perf_counter_comm_ctx(ctx, comm_event);
+                perf_event_comm_ctx(ctx, comm_event);
         rcu_read_unlock();
 }
 
-void perf_counter_comm(struct task_struct *task)
+void perf_event_comm(struct task_struct *task)
 {
         struct perf_comm_event comm_event;
 
-        if (task->perf_counter_ctxp)
-                perf_counter_enable_on_exec(task);
+        if (task->perf_event_ctxp)
+                perf_event_enable_on_exec(task);
 
-        if (!atomic_read(&nr_comm_counters))
+        if (!atomic_read(&nr_comm_events))
                 return;
 
         comm_event = (struct perf_comm_event){
                 .task   = task,
                 /* .comm      */
                 /* .comm_size */
-                .event  = {
+                .event_id  = {
                         .header = {
-                                .type = PERF_EVENT_COMM,
+                                .type = PERF_RECORD_COMM,
                                 .misc = 0,
                                 /* .size */
                         },
@@ -3305,7 +3305,7 @@ void perf_counter_comm(struct task_struct *task)
                 },
         };
 
-        perf_counter_comm_event(&comm_event);
+        perf_event_comm_event(&comm_event);
 }
 
 /*
@@ -3326,57 +3326,57 @@ struct perf_mmap_event {
                 u64                             start;
                 u64                             len;
                 u64                             pgoff;
-        } event;
+        } event_id;
 };
 
-static void perf_counter_mmap_output(struct perf_counter *counter,
+static void perf_event_mmap_output(struct perf_event *event,
                                      struct perf_mmap_event *mmap_event)
 {
         struct perf_output_handle handle;
-        int size = mmap_event->event.header.size;
-        int ret = perf_output_begin(&handle, counter, size, 0, 0);
+        int size = mmap_event->event_id.header.size;
+        int ret = perf_output_begin(&handle, event, size, 0, 0);
 
         if (ret)
                 return;
 
-        mmap_event->event.pid = perf_counter_pid(counter, current);
-        mmap_event->event.tid = perf_counter_tid(counter, current);
+        mmap_event->event_id.pid = perf_event_pid(event, current);
+        mmap_event->event_id.tid = perf_event_tid(event, current);
 
-        perf_output_put(&handle, mmap_event->event);
+        perf_output_put(&handle, mmap_event->event_id);
         perf_output_copy(&handle, mmap_event->file_name,
                                    mmap_event->file_size);
         perf_output_end(&handle);
 }
 
-static int perf_counter_mmap_match(struct perf_counter *counter,
+static int perf_event_mmap_match(struct perf_event *event,
                                    struct perf_mmap_event *mmap_event)
 {
-        if (counter->attr.mmap)
+        if (event->attr.mmap)
                 return 1;
 
         return 0;
 }
 
-static void perf_counter_mmap_ctx(struct perf_counter_context *ctx,
+static void perf_event_mmap_ctx(struct perf_event_context *ctx,
                                   struct perf_mmap_event *mmap_event)
 {
-        struct perf_counter *counter;
+        struct perf_event *event;
 
         if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list))
                 return;
 
         rcu_read_lock();
-        list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) {
-                if (perf_counter_mmap_match(counter, mmap_event))
-                        perf_counter_mmap_output(counter, mmap_event);
+        list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
+                if (perf_event_mmap_match(event, mmap_event))
+                        perf_event_mmap_output(event, mmap_event);
         }
         rcu_read_unlock();
 }
 
-static void perf_counter_mmap_event(struct perf_mmap_event *mmap_event)
+static void perf_event_mmap_event(struct perf_mmap_event *mmap_event)
 {
         struct perf_cpu_context *cpuctx;
-        struct perf_counter_context *ctx;
+        struct perf_event_context *ctx;
         struct vm_area_struct *vma = mmap_event->vma;
         struct file *file = vma->vm_file;
         unsigned int size;
@@ -3424,10 +3424,10 @@ got_name:
         mmap_event->file_name = name;
         mmap_event->file_size = size;
 
-        mmap_event->event.header.size = sizeof(mmap_event->event) + size;
+        mmap_event->event_id.header.size = sizeof(mmap_event->event_id) + size;
 
         cpuctx = &get_cpu_var(perf_cpu_context);
-        perf_counter_mmap_ctx(&cpuctx->ctx, mmap_event);
+        perf_event_mmap_ctx(&cpuctx->ctx, mmap_event);
         put_cpu_var(perf_cpu_context);
 
         rcu_read_lock();
@@ -3435,28 +3435,28 @@ got_name:
          * doesn't really matter which of the child contexts the
          * events ends up in.
          */
-        ctx = rcu_dereference(current->perf_counter_ctxp);
+        ctx = rcu_dereference(current->perf_event_ctxp);
         if (ctx)
-                perf_counter_mmap_ctx(ctx, mmap_event);
+                perf_event_mmap_ctx(ctx, mmap_event);
         rcu_read_unlock();
 
         kfree(buf);
 }
 
-void __perf_counter_mmap(struct vm_area_struct *vma)
+void __perf_event_mmap(struct vm_area_struct *vma)
 {
         struct perf_mmap_event mmap_event;
 
-        if (!atomic_read(&nr_mmap_counters))
+        if (!atomic_read(&nr_mmap_events))
                 return;
 
         mmap_event = (struct perf_mmap_event){
                 .vma    = vma,
                 /* .file_name */
                 /* .file_size */
-                .event  = {
+                .event_id  = {
                         .header = {
-                                .type = PERF_EVENT_MMAP,
+                                .type = PERF_RECORD_MMAP,
                                 .misc = 0,
                                 /* .size */
                         },
@@ -3468,14 +3468,14 @@ void __perf_counter_mmap(struct vm_area_struct *vma)
                 },
         };
 
-        perf_counter_mmap_event(&mmap_event);
+        perf_event_mmap_event(&mmap_event);
 }
 
 /*
  * IRQ throttle logging
  */
 
-static void perf_log_throttle(struct perf_counter *counter, int enable)
+static void perf_log_throttle(struct perf_event *event, int enable)
 {
         struct perf_output_handle handle;
         int ret;
@@ -3487,19 +3487,19 @@ static void perf_log_throttle(struct perf_counter *counter, int enable)
                 u64                             stream_id;
         } throttle_event = {
                 .header = {
-                        .type = PERF_EVENT_THROTTLE,
+                        .type = PERF_RECORD_THROTTLE,
                         .misc = 0,
                         .size = sizeof(throttle_event),
                 },
                 .time           = perf_clock(),
-                .id             = primary_counter_id(counter),
-                .stream_id      = counter->id,
+                .id             = primary_event_id(event),
+                .stream_id      = event->id,
         };
 
         if (enable)
-                throttle_event.header.type = PERF_EVENT_UNTHROTTLE;
+                throttle_event.header.type = PERF_RECORD_UNTHROTTLE;
 
-        ret = perf_output_begin(&handle, counter, sizeof(throttle_event), 1, 0);
+        ret = perf_output_begin(&handle, event, sizeof(throttle_event), 1, 0);
         if (ret)
                 return;
 
@@ -3508,18 +3508,18 @@ static void perf_log_throttle(struct perf_counter *counter, int enable)
 }
 
 /*
- * Generic counter overflow handling, sampling.
+ * Generic event overflow handling, sampling.
  */
 
-static int __perf_counter_overflow(struct perf_counter *counter, int nmi,
+static int __perf_event_overflow(struct perf_event *event, int nmi,
                                    int throttle, struct perf_sample_data *data,
                                    struct pt_regs *regs)
 {
-        int events = atomic_read(&counter->event_limit);
-        struct hw_perf_counter *hwc = &counter->hw;
+        int events = atomic_read(&event->event_limit);
+        struct hw_perf_event *hwc = &event->hw;
         int ret = 0;
 
-        throttle = (throttle && counter->pmu->unthrottle != NULL);
+        throttle = (throttle && event->pmu->unthrottle != NULL);
 
         if (!throttle) {
                 hwc->interrupts++;
@@ -3527,73 +3527,73 @@ static int __perf_counter_overflow(struct perf_counter *counter, int nmi,
                 if (hwc->interrupts != MAX_INTERRUPTS) {
                         hwc->interrupts++;
                         if (HZ * hwc->interrupts >
-                                        (u64)sysctl_perf_counter_sample_rate) {
+                                        (u64)sysctl_perf_event_sample_rate) {
                                 hwc->interrupts = MAX_INTERRUPTS;
-                                perf_log_throttle(counter, 0);
+                                perf_log_throttle(event, 0);
                                 ret = 1;
                         }
                 } else {
                         /*
-                         * Keep re-disabling counters even though on the previous
+                         * Keep re-disabling events even though on the previous
                          * pass we disabled it - just in case we raced with a
-                         * sched-in and the counter got enabled again:
+                         * sched-in and the event got enabled again:
                          */
                         ret = 1;
                 }
         }
 
-        if (counter->attr.freq) {
+        if (event->attr.freq) {
                 u64 now = perf_clock();
                 s64 delta = now - hwc->freq_stamp;
 
                 hwc->freq_stamp = now;
 
                 if (delta > 0 && delta < TICK_NSEC)
-                        perf_adjust_period(counter, NSEC_PER_SEC / (int)delta);
+                        perf_adjust_period(event, NSEC_PER_SEC / (int)delta);
         }
 
         /*
          * XXX event_limit might not quite work as expected on inherited
-         * counters
+         * events
          */
 
-        counter->pending_kill = POLL_IN;
-        if (events && atomic_dec_and_test(&counter->event_limit)) {
+        event->pending_kill = POLL_IN;
+        if (events && atomic_dec_and_test(&event->event_limit)) {
                 ret = 1;
-                counter->pending_kill = POLL_HUP;
+                event->pending_kill = POLL_HUP;
                 if (nmi) {
-                        counter->pending_disable = 1;
-                        perf_pending_queue(&counter->pending,
-                                           perf_pending_counter);
+                        event->pending_disable = 1;
+                        perf_pending_queue(&event->pending,
+                                           perf_pending_event);
                 } else
-                        perf_counter_disable(counter);
+                        perf_event_disable(event);
         }
 
-        perf_counter_output(counter, nmi, data, regs);
+        perf_event_output(event, nmi, data, regs);
         return ret;
 }
 
-int perf_counter_overflow(struct perf_counter *counter, int nmi,
+int perf_event_overflow(struct perf_event *event, int nmi,
                           struct perf_sample_data *data,
                           struct pt_regs *regs)
 {
-        return __perf_counter_overflow(counter, nmi, 1, data, regs);
+        return __perf_event_overflow(event, nmi, 1, data, regs);
 }
 
 /*
- * Generic software counter infrastructure
+ * Generic software event infrastructure
  */
 
 /*
- * We directly increment counter->count and keep a second value in
- * counter->hw.period_left to count intervals. This period counter
+ * We directly increment event->count and keep a second value in
+ * event->hw.period_left to count intervals. This period event
  * is kept in the range [-sample_period, 0] so that we can use the
  * sign as trigger.
  */
 
-static u64 perf_swcounter_set_period(struct perf_counter *counter)
+static u64 perf_swevent_set_period(struct perf_event *event)
 {
-        struct hw_perf_counter *hwc = &counter->hw;
+        struct hw_perf_event *hwc = &event->hw;
         u64 period = hwc->last_period;
         u64 nr, offset;
         s64 old, val;
@@ -3614,22 +3614,22 @@ again:
         return nr;
 }
 
-static void perf_swcounter_overflow(struct perf_counter *counter,
+static void perf_swevent_overflow(struct perf_event *event,
                                     int nmi, struct perf_sample_data *data,
                                     struct pt_regs *regs)
 {
-        struct hw_perf_counter *hwc = &counter->hw;
+        struct hw_perf_event *hwc = &event->hw;
         int throttle = 0;
         u64 overflow;
 
-        data->period = counter->hw.last_period;
-        overflow = perf_swcounter_set_period(counter);
+        data->period = event->hw.last_period;
+        overflow = perf_swevent_set_period(event);
 
         if (hwc->interrupts == MAX_INTERRUPTS)
                 return;
 
         for (; overflow; overflow--) {
-                if (__perf_counter_overflow(counter, nmi, throttle,
+                if (__perf_event_overflow(event, nmi, throttle,
                                             data, regs)) {
                         /*
                          * We inhibit the overflow from happening when
@@ -3641,20 +3641,20 @@ static void perf_swcounter_overflow(struct perf_counter *counter,
         }
 }
 
-static void perf_swcounter_unthrottle(struct perf_counter *counter)
+static void perf_swevent_unthrottle(struct perf_event *event)
 {
         /*
          * Nothing to do, we already reset hwc->interrupts.
          */
 }
 
-static void perf_swcounter_add(struct perf_counter *counter, u64 nr,
+static void perf_swevent_add(struct perf_event *event, u64 nr,
                                int nmi, struct perf_sample_data *data,
                                struct pt_regs *regs)
 {
-        struct hw_perf_counter *hwc = &counter->hw;
+        struct hw_perf_event *hwc = &event->hw;
 
-        atomic64_add(nr, &counter->count);
+        atomic64_add(nr, &event->count);
 
         if (!hwc->sample_period)
                 return;
@@ -3663,29 +3663,29 @@ static void perf_swcounter_add(struct perf_counter *counter, u64 nr,
                 return;
 
         if (!atomic64_add_negative(nr, &hwc->period_left))
-                perf_swcounter_overflow(counter, nmi, data, regs);
+                perf_swevent_overflow(event, nmi, data, regs);
 }
 
-static int perf_swcounter_is_counting(struct perf_counter *counter)
+static int perf_swevent_is_counting(struct perf_event *event)
 {
         /*
-         * The counter is active, we're good!
+         * The event is active, we're good!
          */
-        if (counter->state == PERF_COUNTER_STATE_ACTIVE)
+        if (event->state == PERF_EVENT_STATE_ACTIVE)
                 return 1;
 
         /*
-         * The counter is off/error, not counting.
+         * The event is off/error, not counting.
          */
-        if (counter->state != PERF_COUNTER_STATE_INACTIVE)
+        if (event->state != PERF_EVENT_STATE_INACTIVE)
                 return 0;
 
         /*
-         * The counter is inactive, if the context is active
+         * The event is inactive, if the context is active
          * we're part of a group that didn't make it on the 'pmu',
          * not counting.
          */
-        if (counter->ctx->is_active)
+        if (event->ctx->is_active)
                 return 0;
 
         /*
@@ -3696,49 +3696,49 @@ static int perf_swcounter_is_counting(struct perf_counter *counter)
         return 1;
 }
 
-static int perf_swcounter_match(struct perf_counter *counter,
+static int perf_swevent_match(struct perf_event *event,
                                 enum perf_type_id type,
                                 u32 event_id, struct pt_regs *regs)
 {
-        if (!perf_swcounter_is_counting(counter))
+        if (!perf_swevent_is_counting(event))
                 return 0;
 
-        if (counter->attr.type != type)
+        if (event->attr.type != type)
                 return 0;
-        if (counter->attr.config != event_id)
+        if (event->attr.config != event_id)
                 return 0;
 
         if (regs) {
-                if (counter->attr.exclude_user && user_mode(regs))
+                if (event->attr.exclude_user && user_mode(regs))
                         return 0;
 
-                if (counter->attr.exclude_kernel && !user_mode(regs))
+                if (event->attr.exclude_kernel && !user_mode(regs))
                         return 0;
         }
 
         return 1;
 }
 
-static void perf_swcounter_ctx_event(struct perf_counter_context *ctx,
+static void perf_swevent_ctx_event(struct perf_event_context *ctx,
                                      enum perf_type_id type,
                                      u32 event_id, u64 nr, int nmi,
                                      struct perf_sample_data *data,
                                      struct pt_regs *regs)
 {
-        struct perf_counter *counter;
+        struct perf_event *event;
 
         if (system_state != SYSTEM_RUNNING || list_empty(&ctx->event_list))
                 return;
 
         rcu_read_lock();
-        list_for_each_entry_rcu(counter, &ctx->event_list, event_entry) {
-                if (perf_swcounter_match(counter, type, event_id, regs))
-                        perf_swcounter_add(counter, nr, nmi, data, regs);
+        list_for_each_entry_rcu(event, &ctx->event_list, event_entry) {
+                if (perf_swevent_match(event, type, event_id, regs))
+                        perf_swevent_add(event, nr, nmi, data, regs);
         }
         rcu_read_unlock();
 }
 
-static int *perf_swcounter_recursion_context(struct perf_cpu_context *cpuctx)
+static int *perf_swevent_recursion_context(struct perf_cpu_context *cpuctx)
 {
         if (in_nmi())
                 return &cpuctx->recursion[3];
@@ -3752,14 +3752,14 @@ static int *perf_swcounter_recursion_context(struct perf_cpu_context *cpuctx)
         return &cpuctx->recursion[0];
 }
 
-static void do_perf_swcounter_event(enum perf_type_id type, u32 event,
+static void do_perf_sw_event(enum perf_type_id type, u32 event_id,
                                     u64 nr, int nmi,
                                     struct perf_sample_data *data,
                                     struct pt_regs *regs)
 {
         struct perf_cpu_context *cpuctx = &get_cpu_var(perf_cpu_context);
-        int *recursion = perf_swcounter_recursion_context(cpuctx);
-        struct perf_counter_context *ctx;
+        int *recursion = perf_swevent_recursion_context(cpuctx);
+        struct perf_event_context *ctx;
 
         if (*recursion)
                 goto out;
@@ -3767,16 +3767,16 @@ static void do_perf_swcounter_event(enum perf_type_id type, u32 event,
         (*recursion)++;
         barrier();
 
-        perf_swcounter_ctx_event(&cpuctx->ctx, type, event,
+        perf_swevent_ctx_event(&cpuctx->ctx, type, event_id,
                                  nr, nmi, data, regs);
         rcu_read_lock();
         /*
          * doesn't really matter which of the child contexts the
          * events ends up in.
          */
-        ctx = rcu_dereference(current->perf_counter_ctxp);
+        ctx = rcu_dereference(current->perf_event_ctxp);
         if (ctx)
-                perf_swcounter_ctx_event(ctx, type, event, nr, nmi, data, regs);
+                perf_swevent_ctx_event(ctx, type, event_id, nr, nmi, data, regs);
         rcu_read_unlock();
 
         barrier();
@@ -3786,57 +3786,57 @@ out:
         put_cpu_var(perf_cpu_context);
 }
 
-void __perf_swcounter_event(u32 event, u64 nr, int nmi,
+void __perf_sw_event(u32 event_id, u64 nr, int nmi,
                             struct pt_regs *regs, u64 addr)
 {
         struct perf_sample_data data = {
                 .addr = addr,
         };
 
-        do_perf_swcounter_event(PERF_TYPE_SOFTWARE, event, nr, nmi,
+        do_perf_sw_event(PERF_TYPE_SOFTWARE, event_id, nr, nmi,
                                 &data, regs);
 }
 
-static void perf_swcounter_read(struct perf_counter *counter)
+static void perf_swevent_read(struct perf_event *event)
 {
 }
 
-static int perf_swcounter_enable(struct perf_counter *counter)
+static int perf_swevent_enable(struct perf_event *event)
 {
-        struct hw_perf_counter *hwc = &counter->hw;
+        struct hw_perf_event *hwc = &event->hw;
 
         if (hwc->sample_period) {
                 hwc->last_period = hwc->sample_period;
-                perf_swcounter_set_period(counter);
+                perf_swevent_set_period(event);
         }
         return 0;
 }
 
-static void perf_swcounter_disable(struct perf_counter *counter)
+static void perf_swevent_disable(struct perf_event *event)
 {
 }
 
 static const struct pmu perf_ops_generic = {
-        .enable         = perf_swcounter_enable,
-        .disable        = perf_swcounter_disable,
-        .read           = perf_swcounter_read,
-        .unthrottle     = perf_swcounter_unthrottle,
+        .enable         = perf_swevent_enable,
+        .disable        = perf_swevent_disable,
+        .read           = perf_swevent_read,
+        .unthrottle     = perf_swevent_unthrottle,
 };
 
 /*
- * hrtimer based swcounter callback
+ * hrtimer based swevent callback
  */
 
-static enum hrtimer_restart perf_swcounter_hrtimer(struct hrtimer *hrtimer)
+static enum hrtimer_restart perf_swevent_hrtimer(struct hrtimer *hrtimer)
 {
         enum hrtimer_restart ret = HRTIMER_RESTART;
         struct perf_sample_data data;
         struct pt_regs *regs;
-        struct perf_counter *counter;
+        struct perf_event *event;
         u64 period;
 
-        counter = container_of(hrtimer, struct perf_counter, hw.hrtimer);
-        counter->pmu->read(counter);
+        event   = container_of(hrtimer, struct perf_event, hw.hrtimer);
+        event->pmu->read(event);
 
         data.addr = 0;
         regs = get_irq_regs();
@@ -3844,45 +3844,45 @@ static enum hrtimer_restart perf_swcounter_hrtimer(struct hrtimer *hrtimer)
          * In case we exclude kernel IPs or are somehow not in interrupt
          * context, provide the next best thing, the user IP.
          */
-        if ((counter->attr.exclude_kernel || !regs) &&
-                        !counter->attr.exclude_user)
+        if ((event->attr.exclude_kernel || !regs) &&
+                        !event->attr.exclude_user)
                 regs = task_pt_regs(current);
 
         if (regs) {
-                if (perf_counter_overflow(counter, 0, &data, regs))
+                if (perf_event_overflow(event, 0, &data, regs))
                         ret = HRTIMER_NORESTART;
         }
 
-        period = max_t(u64, 10000, counter->hw.sample_period);
+        period = max_t(u64, 10000, event->hw.sample_period);
         hrtimer_forward_now(hrtimer, ns_to_ktime(period));
 
         return ret;
 }
 
 /*
- * Software counter: cpu wall time clock
+ * Software event: cpu wall time clock
  */
 
-static void cpu_clock_perf_counter_update(struct perf_counter *counter)
+static void cpu_clock_perf_event_update(struct perf_event *event)
 {
         int cpu = raw_smp_processor_id();
         s64 prev;
         u64 now;
 
         now = cpu_clock(cpu);
-        prev = atomic64_read(&counter->hw.prev_count);
-        atomic64_set(&counter->hw.prev_count, now);
-        atomic64_add(now - prev, &counter->count);
+        prev = atomic64_read(&event->hw.prev_count);
+        atomic64_set(&event->hw.prev_count, now);
+        atomic64_add(now - prev, &event->count);
 }
 
-static int cpu_clock_perf_counter_enable(struct perf_counter *counter)
+static int cpu_clock_perf_event_enable(struct perf_event *event)
 {
-        struct hw_perf_counter *hwc = &counter->hw;
+        struct hw_perf_event *hwc = &event->hw;
         int cpu = raw_smp_processor_id();
 
         atomic64_set(&hwc->prev_count, cpu_clock(cpu));
         hrtimer_init(&hwc->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
-        hwc->hrtimer.function = perf_swcounter_hrtimer;
+        hwc->hrtimer.function = perf_swevent_hrtimer;
         if (hwc->sample_period) {
                 u64 period = max_t(u64, 10000, hwc->sample_period);
                 __hrtimer_start_range_ns(&hwc->hrtimer,
@@ -3893,48 +3893,48 @@ static int cpu_clock_perf_counter_enable(struct perf_counter *counter)
         return 0;
 }
 
-static void cpu_clock_perf_counter_disable(struct perf_counter *counter)
+static void cpu_clock_perf_event_disable(struct perf_event *event)
 {
-        if (counter->hw.sample_period)
-                hrtimer_cancel(&counter->hw.hrtimer);
-        cpu_clock_perf_counter_update(counter);
+        if (event->hw.sample_period)
+                hrtimer_cancel(&event->hw.hrtimer);
+        cpu_clock_perf_event_update(event);
 }
 
-static void cpu_clock_perf_counter_read(struct perf_counter *counter)
+static void cpu_clock_perf_event_read(struct perf_event *event)
 {
-        cpu_clock_perf_counter_update(counter);
+        cpu_clock_perf_event_update(event);
 }
 
 static const struct pmu perf_ops_cpu_clock = {
-        .enable         = cpu_clock_perf_counter_enable,
-        .disable        = cpu_clock_perf_counter_disable,
-        .read           = cpu_clock_perf_counter_read,
+        .enable         = cpu_clock_perf_event_enable,
+        .disable        = cpu_clock_perf_event_disable,
+        .read           = cpu_clock_perf_event_read,
 };
 
 /*
- * Software counter: task time clock
+ * Software event: task time clock
  */
 
-static void task_clock_perf_counter_update(struct perf_counter *counter, u64 now)
+static void task_clock_perf_event_update(struct perf_event *event, u64 now)
 {
         u64 prev;
         s64 delta;
 
-        prev = atomic64_xchg(&counter->hw.prev_count, now);
+        prev = atomic64_xchg(&event->hw.prev_count, now);
         delta = now - prev;
-        atomic64_add(delta, &counter->count);
+        atomic64_add(delta, &event->count);
 }
 
-static int task_clock_perf_counter_enable(struct perf_counter *counter)
+static int task_clock_perf_event_enable(struct perf_event *event)
 {
-        struct hw_perf_counter *hwc = &counter->hw;
+        struct hw_perf_event *hwc = &event->hw;
         u64 now;
 
-        now = counter->ctx->time;
+        now = event->ctx->time;
 
         atomic64_set(&hwc->prev_count, now);
         hrtimer_init(&hwc->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
-        hwc->hrtimer.function = perf_swcounter_hrtimer;
+        hwc->hrtimer.function = perf_swevent_hrtimer;
         if (hwc->sample_period) {
                 u64 period = max_t(u64, 10000, hwc->sample_period);
                 __hrtimer_start_range_ns(&hwc->hrtimer,
@@ -3945,38 +3945,38 @@ static int task_clock_perf_counter_enable(struct perf_counter *counter)
         return 0;
 }
 
-static void task_clock_perf_counter_disable(struct perf_counter *counter)
+static void task_clock_perf_event_disable(struct perf_event *event)
 {
-        if (counter->hw.sample_period)
-                hrtimer_cancel(&counter->hw.hrtimer);
-        task_clock_perf_counter_update(counter, counter->ctx->time);
+        if (event->hw.sample_period)
+                hrtimer_cancel(&event->hw.hrtimer);
+        task_clock_perf_event_update(event, event->ctx->time);
 
 }
 
-static void task_clock_perf_counter_read(struct perf_counter *counter)
+static void task_clock_perf_event_read(struct perf_event *event)
 {
         u64 time;
 
         if (!in_nmi()) {
-                update_context_time(counter->ctx);
-                time = counter->ctx->time;
+                update_context_time(event->ctx);
+                time = event->ctx->time;
         } else {
                 u64 now = perf_clock();
-                u64 delta = now - counter->ctx->timestamp;
-                time = counter->ctx->time + delta;
+                u64 delta = now - event->ctx->timestamp;
+                time = event->ctx->time + delta;
         }
 
-        task_clock_perf_counter_update(counter, time);
+        task_clock_perf_event_update(event, time);
 }
 
 static const struct pmu perf_ops_task_clock = {
-        .enable         = task_clock_perf_counter_enable,
-        .disable        = task_clock_perf_counter_disable,
-        .read           = task_clock_perf_counter_read,
+        .enable         = task_clock_perf_event_enable,
+        .disable        = task_clock_perf_event_disable,
+        .read           = task_clock_perf_event_read,
 };
 
 #ifdef CONFIG_EVENT_PROFILE
-void perf_tpcounter_event(int event_id, u64 addr, u64 count, void *record,
+void perf_tp_event(int event_id, u64 addr, u64 count, void *record,
                           int entry_size)
 {
         struct perf_raw_record raw = {
@@ -3994,62 +3994,62 @@ void perf_tpcounter_event(int event_id, u64 addr, u64 count, void *record,
         if (!regs)
                 regs = task_pt_regs(current);
 
-        do_perf_swcounter_event(PERF_TYPE_TRACEPOINT, event_id, count, 1,
+        do_perf_sw_event(PERF_TYPE_TRACEPOINT, event_id, count, 1,
                                 &data, regs);
 }
-EXPORT_SYMBOL_GPL(perf_tpcounter_event);
+EXPORT_SYMBOL_GPL(perf_tp_event);
 
 extern int ftrace_profile_enable(int);
 extern void ftrace_profile_disable(int);
 
-static void tp_perf_counter_destroy(struct perf_counter *counter)
+static void tp_perf_event_destroy(struct perf_event *event)
 {
-        ftrace_profile_disable(counter->attr.config);
+        ftrace_profile_disable(event->attr.config);
 }
 
-static const struct pmu *tp_perf_counter_init(struct perf_counter *counter)
+static const struct pmu *tp_perf_event_init(struct perf_event *event)
 {
         /*
          * Raw tracepoint data is a severe data leak, only allow root to
          * have these.
          */
-        if ((counter->attr.sample_type & PERF_SAMPLE_RAW) &&
+        if ((event->attr.sample_type & PERF_SAMPLE_RAW) &&
                         perf_paranoid_tracepoint_raw() &&
                         !capable(CAP_SYS_ADMIN))
                 return ERR_PTR(-EPERM);
 
-        if (ftrace_profile_enable(counter->attr.config))
+        if (ftrace_profile_enable(event->attr.config))
                 return NULL;
 
-        counter->destroy = tp_perf_counter_destroy;
+        event->destroy = tp_perf_event_destroy;
 
         return &perf_ops_generic;
 }
 #else
-static const struct pmu *tp_perf_counter_init(struct perf_counter *counter)
+static const struct pmu *tp_perf_event_init(struct perf_event *event)
 {
         return NULL;
 }
 #endif
 
-atomic_t perf_swcounter_enabled[PERF_COUNT_SW_MAX];
+atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX];
 
-static void sw_perf_counter_destroy(struct perf_counter *counter)
+static void sw_perf_event_destroy(struct perf_event *event)
 {
-        u64 event_id = counter->attr.config;
+        u64 event_id = event->attr.config;
 
-        WARN_ON(counter->parent);
+        WARN_ON(event->parent);
 
-        atomic_dec(&perf_swcounter_enabled[event_id]);
+        atomic_dec(&perf_swevent_enabled[event_id]);
 }
 
-static const struct pmu *sw_perf_counter_init(struct perf_counter *counter)
+static const struct pmu *sw_perf_event_init(struct perf_event *event)
 {
         const struct pmu *pmu = NULL;
-        u64 event_id = counter->attr.config;
+        u64 event_id = event->attr.config;
 
         /*
-         * Software counters (currently) can't in general distinguish
+         * Software events (currently) can't in general distinguish
          * between user, kernel and hypervisor events.
          * However, context switches and cpu migrations are considered
          * to be kernel events, and page faults are never hypervisor
@@ -4062,10 +4062,10 @@ static const struct pmu *sw_perf_counter_init(struct perf_counter *counter)
                 break;
         case PERF_COUNT_SW_TASK_CLOCK:
                 /*
-                 * If the user instantiates this as a per-cpu counter,
-                 * use the cpu_clock counter instead.
+                 * If the user instantiates this as a per-cpu event,
+                 * use the cpu_clock event instead.
                  */
-                if (counter->ctx->task)
+                if (event->ctx->task)
                         pmu = &perf_ops_task_clock;
                 else
                         pmu = &perf_ops_cpu_clock;
@@ -4076,9 +4076,9 @@ static const struct pmu *sw_perf_counter_init(struct perf_counter *counter)
         case PERF_COUNT_SW_PAGE_FAULTS_MAJ:
         case PERF_COUNT_SW_CONTEXT_SWITCHES:
         case PERF_COUNT_SW_CPU_MIGRATIONS:
-                if (!counter->parent) {
-                        atomic_inc(&perf_swcounter_enabled[event_id]);
-                        counter->destroy = sw_perf_counter_destroy;
+                if (!event->parent) {
+                        atomic_inc(&perf_swevent_enabled[event_id]);
+                        event->destroy = sw_perf_event_destroy;
                 }
                 pmu = &perf_ops_generic;
                 break;
@@ -4088,62 +4088,62 @@ static const struct pmu *sw_perf_counter_init(struct perf_counter *counter)
 }
 
 /*
- * Allocate and initialize a counter structure
+ * Allocate and initialize a event structure
  */
-static struct perf_counter *
-perf_counter_alloc(struct perf_counter_attr *attr,
+static struct perf_event *
+perf_event_alloc(struct perf_event_attr *attr,
                    int cpu,
-                   struct perf_counter_context *ctx,
-                   struct perf_counter *group_leader,
-                   struct perf_counter *parent_counter,
+                   struct perf_event_context *ctx,
+                   struct perf_event *group_leader,
+                   struct perf_event *parent_event,
                    gfp_t gfpflags)
 {
         const struct pmu *pmu;
-        struct perf_counter *counter;
-        struct hw_perf_counter *hwc;
+        struct perf_event *event;
+        struct hw_perf_event *hwc;
         long err;
 
-        counter = kzalloc(sizeof(*counter), gfpflags);
-        if (!counter)
+        event = kzalloc(sizeof(*event), gfpflags);
+        if (!event)
                 return ERR_PTR(-ENOMEM);
 
         /*
-         * Single counters are their own group leaders, with an
+         * Single events are their own group leaders, with an
          * empty sibling list:
          */
         if (!group_leader)
-                group_leader = counter;
+                group_leader = event;
 
-        mutex_init(&counter->child_mutex);
-        INIT_LIST_HEAD(&counter->child_list);
+        mutex_init(&event->child_mutex);
+        INIT_LIST_HEAD(&event->child_list);
 
-        INIT_LIST_HEAD(&counter->group_entry);
-        INIT_LIST_HEAD(&counter->event_entry);
-        INIT_LIST_HEAD(&counter->sibling_list);
-        init_waitqueue_head(&counter->waitq);
+        INIT_LIST_HEAD(&event->group_entry);
+        INIT_LIST_HEAD(&event->event_entry);
+        INIT_LIST_HEAD(&event->sibling_list);
+        init_waitqueue_head(&event->waitq);
 
-        mutex_init(&counter->mmap_mutex);
+        mutex_init(&event->mmap_mutex);
 
-        counter->cpu            = cpu;
-        counter->attr           = *attr;
-        counter->group_leader   = group_leader;
-        counter->pmu            = NULL;
-        counter->ctx            = ctx;
-        counter->oncpu          = -1;
+        event->cpu              = cpu;
+        event->attr             = *attr;
+        event->group_leader     = group_leader;
+        event->pmu              = NULL;
+        event->ctx              = ctx;
+        event->oncpu            = -1;
 
-        counter->parent         = parent_counter;
+        event->parent           = parent_event;
 
-        counter->ns             = get_pid_ns(current->nsproxy->pid_ns);
-        counter->id             = atomic64_inc_return(&perf_counter_id);
+        event->ns               = get_pid_ns(current->nsproxy->pid_ns);
+        event->id               = atomic64_inc_return(&perf_event_id);
 
-        counter->state          = PERF_COUNTER_STATE_INACTIVE;
+        event->state            = PERF_EVENT_STATE_INACTIVE;
 
         if (attr->disabled)
-                counter->state = PERF_COUNTER_STATE_OFF;
+                event->state = PERF_EVENT_STATE_OFF;
 
         pmu = NULL;
 
-        hwc = &counter->hw;
+        hwc = &event->hw;
         hwc->sample_period = attr->sample_period;
         if (attr->freq && attr->sample_freq)
                 hwc->sample_period = 1;
@@ -4152,7 +4152,7 @@ perf_counter_alloc(struct perf_counter_attr *attr,
         atomic64_set(&hwc->period_left, hwc->sample_period);
 
         /*
-         * we currently do not support PERF_FORMAT_GROUP on inherited counters
+         * we currently do not support PERF_FORMAT_GROUP on inherited events
          */
         if (attr->inherit && (attr->read_format & PERF_FORMAT_GROUP))
                 goto done;
@@ -4161,15 +4161,15 @@ perf_counter_alloc(struct perf_counter_attr *attr,
         case PERF_TYPE_RAW:
         case PERF_TYPE_HARDWARE:
         case PERF_TYPE_HW_CACHE:
-                pmu = hw_perf_counter_init(counter);
+                pmu = hw_perf_event_init(event);
                 break;
 
         case PERF_TYPE_SOFTWARE:
-                pmu = sw_perf_counter_init(counter);
+                pmu = sw_perf_event_init(event);
                 break;
 
         case PERF_TYPE_TRACEPOINT:
-                pmu = tp_perf_counter_init(counter);
+                pmu = tp_perf_event_init(event);
                 break;
 
         default:
@@ -4183,29 +4183,29 @@ done:
                 err = PTR_ERR(pmu);
 
         if (err) {
-                if (counter->ns)
-                        put_pid_ns(counter->ns);
-                kfree(counter);
+                if (event->ns)
+                        put_pid_ns(event->ns);
+                kfree(event);
                 return ERR_PTR(err);
         }
 
-        counter->pmu = pmu;
+        event->pmu = pmu;
 
-        if (!counter->parent) {
-                atomic_inc(&nr_counters);
-                if (counter->attr.mmap)
-                        atomic_inc(&nr_mmap_counters);
-                if (counter->attr.comm)
-                        atomic_inc(&nr_comm_counters);
-                if (counter->attr.task)
-                        atomic_inc(&nr_task_counters);
+        if (!event->parent) {
+                atomic_inc(&nr_events);
+                if (event->attr.mmap)
+                        atomic_inc(&nr_mmap_events);
+                if (event->attr.comm)
+                        atomic_inc(&nr_comm_events);
+                if (event->attr.task)
+                        atomic_inc(&nr_task_events);
         }
 
-        return counter;
+        return event;
 }
 
-static int perf_copy_attr(struct perf_counter_attr __user *uattr,
-                          struct perf_counter_attr *attr)
+static int perf_copy_attr(struct perf_event_attr __user *uattr,
+                          struct perf_event_attr *attr)
 {
         u32 size;
         int ret;
@@ -4284,11 +4284,11 @@ err_size:
         goto out;
 }
 
-int perf_counter_set_output(struct perf_counter *counter, int output_fd)
+int perf_event_set_output(struct perf_event *event, int output_fd)
 {
-        struct perf_counter *output_counter = NULL;
+        struct perf_event *output_event = NULL;
         struct file *output_file = NULL;
-        struct perf_counter *old_output;
+        struct perf_event *old_output;
         int fput_needed = 0;
         int ret = -EINVAL;
 
@@ -4302,28 +4302,28 @@ int perf_counter_set_output(struct perf_counter *counter, int output_fd)
         if (output_file->f_op != &perf_fops)
                 goto out;
 
-        output_counter = output_file->private_data;
+        output_event = output_file->private_data;
 
         /* Don't chain output fds */
-        if (output_counter->output)
+        if (output_event->output)
                 goto out;
 
         /* Don't set an output fd when we already have an output channel */
-        if (counter->data)
+        if (event->data)
                 goto out;
 
         atomic_long_inc(&output_file->f_count);
 
 set:
-        mutex_lock(&counter->mmap_mutex);
-        old_output = counter->output;
-        rcu_assign_pointer(counter->output, output_counter);
-        mutex_unlock(&counter->mmap_mutex);
+        mutex_lock(&event->mmap_mutex);
+        old_output = event->output;
+        rcu_assign_pointer(event->output, output_event);
+        mutex_unlock(&event->mmap_mutex);
 
         if (old_output) {
                 /*
                  * we need to make sure no existing perf_output_*()
-                 * is still referencing this counter.
+                 * is still referencing this event.
                  */
                 synchronize_rcu();
                 fput(old_output->filp);
@@ -4336,21 +4336,21 @@ out:
 }
 
 /**
- * sys_perf_counter_open - open a performance counter, associate it to a task/cpu
+ * sys_perf_event_open - open a performance event, associate it to a task/cpu
  *
- * @attr_uptr:  event type attributes for monitoring/sampling
+ * @attr_uptr:  event_id type attributes for monitoring/sampling
  * @pid:                target pid
  * @cpu:                target cpu
- * @group_fd:           group leader counter fd
+ * @group_fd:           group leader event fd
  */
-SYSCALL_DEFINE5(perf_counter_open,
-                struct perf_counter_attr __user *, attr_uptr,
+SYSCALL_DEFINE5(perf_event_open,
+                struct perf_event_attr __user *, attr_uptr,
                 pid_t, pid, int, cpu, int, group_fd, unsigned long, flags)
 {
-        struct perf_counter *counter, *group_leader;
-        struct perf_counter_attr attr;
-        struct perf_counter_context *ctx;
-        struct file *counter_file = NULL;
+        struct perf_event *event, *group_leader;
+        struct perf_event_attr attr;
+        struct perf_event_context *ctx;
+        struct file *event_file = NULL;
         struct file *group_file = NULL;
         int fput_needed = 0;
         int fput_needed2 = 0;
@@ -4370,7 +4370,7 @@ SYSCALL_DEFINE5(perf_counter_open,
         }
 
         if (attr.freq) {
-                if (attr.sample_freq > sysctl_perf_counter_sample_rate)
+                if (attr.sample_freq > sysctl_perf_event_sample_rate)
                         return -EINVAL;
         }
 
@@ -4382,7 +4382,7 @@ SYSCALL_DEFINE5(perf_counter_open,
                 return PTR_ERR(ctx);
 
         /*
-         * Look up the group leader (we will attach this counter to it):
+         * Look up the group leader (we will attach this event to it):
          */
         group_leader = NULL;
         if (group_fd != -1 && !(flags & PERF_FLAG_FD_NO_GROUP)) {
@@ -4413,45 +4413,45 @@ SYSCALL_DEFINE5(perf_counter_open,
                         goto err_put_context;
         }
 
-        counter = perf_counter_alloc(&attr, cpu, ctx, group_leader,
+        event = perf_event_alloc(&attr, cpu, ctx, group_leader,
                                      NULL, GFP_KERNEL);
-        err = PTR_ERR(counter);
-        if (IS_ERR(counter))
+        err = PTR_ERR(event);
+        if (IS_ERR(event))
                 goto err_put_context;
 
-        err = anon_inode_getfd("[perf_counter]", &perf_fops, counter, 0);
+        err = anon_inode_getfd("[perf_event]", &perf_fops, event, 0);
         if (err < 0)
                 goto err_free_put_context;
 
-        counter_file = fget_light(err, &fput_needed2);
-        if (!counter_file)
+        event_file = fget_light(err, &fput_needed2);
+        if (!event_file)
                 goto err_free_put_context;
 
         if (flags & PERF_FLAG_FD_OUTPUT) {
-                err = perf_counter_set_output(counter, group_fd);
+                err = perf_event_set_output(event, group_fd);
                 if (err)
                         goto err_fput_free_put_context;
         }
 
-        counter->filp = counter_file;
+        event->filp = event_file;
         WARN_ON_ONCE(ctx->parent_ctx);
         mutex_lock(&ctx->mutex);
-        perf_install_in_context(ctx, counter, cpu);
+        perf_install_in_context(ctx, event, cpu);
         ++ctx->generation;
         mutex_unlock(&ctx->mutex);
 
-        counter->owner = current;
+        event->owner = current;
         get_task_struct(current);
-        mutex_lock(&current->perf_counter_mutex);
-        list_add_tail(&counter->owner_entry, &current->perf_counter_list);
-        mutex_unlock(&current->perf_counter_mutex);
+        mutex_lock(&current->perf_event_mutex);
+        list_add_tail(&event->owner_entry, &current->perf_event_list);
+        mutex_unlock(&current->perf_event_mutex);
 
 err_fput_free_put_context:
-        fput_light(counter_file, fput_needed2);
+        fput_light(event_file, fput_needed2);
 
 err_free_put_context:
         if (err < 0)
-                kfree(counter);
+                kfree(event);
 
 err_put_context:
         if (err < 0)
@@ -4463,88 +4463,88 @@ err_put_context:
 }
 
 /*
- * inherit a counter from parent task to child task:
+ * inherit a event from parent task to child task:
  */
-static struct perf_counter *
-inherit_counter(struct perf_counter *parent_counter,
+static struct perf_event *
+inherit_event(struct perf_event *parent_event,
               struct task_struct *parent,
-              struct perf_counter_context *parent_ctx,
+              struct perf_event_context *parent_ctx,
               struct task_struct *child,
-              struct perf_counter *group_leader,
-              struct perf_counter_context *child_ctx)
+              struct perf_event *group_leader,
+              struct perf_event_context *child_ctx)
 {
-        struct perf_counter *child_counter;
+        struct perf_event *child_event;
 
         /*
-         * Instead of creating recursive hierarchies of counters,
-         * we link inherited counters back to the original parent,
+         * Instead of creating recursive hierarchies of events,
+         * we link inherited events back to the original parent,
          * which has a filp for sure, which we use as the reference
          * count:
          */
-        if (parent_counter->parent)
-                parent_counter = parent_counter->parent;
+        if (parent_event->parent)
+                parent_event = parent_event->parent;
 
-        child_counter = perf_counter_alloc(&parent_counter->attr,
-                                           parent_counter->cpu, child_ctx,
-                                           group_leader, parent_counter,
+        child_event = perf_event_alloc(&parent_event->attr,
+                                           parent_event->cpu, child_ctx,
+                                           group_leader, parent_event,
                                            GFP_KERNEL);
-        if (IS_ERR(child_counter))
-                return child_counter;
+        if (IS_ERR(child_event))
+                return child_event;
         get_ctx(child_ctx);
 
         /*
-         * Make the child state follow the state of the parent counter,
+         * Make the child state follow the state of the parent event,
          * not its attr.disabled bit.  We hold the parent's mutex,
-         * so we won't race with perf_counter_{en, dis}able_family.
+         * so we won't race with perf_event_{en, dis}able_family.
          */
-        if (parent_counter->state >= PERF_COUNTER_STATE_INACTIVE)
-                child_counter->state = PERF_COUNTER_STATE_INACTIVE;
+        if (parent_event->state >= PERF_EVENT_STATE_INACTIVE)
+                child_event->state = PERF_EVENT_STATE_INACTIVE;
         else
-                child_counter->state = PERF_COUNTER_STATE_OFF;
+                child_event->state = PERF_EVENT_STATE_OFF;
 
-        if (parent_counter->attr.freq)
-                child_counter->hw.sample_period = parent_counter->hw.sample_period;
+        if (parent_event->attr.freq)
+                child_event->hw.sample_period = parent_event->hw.sample_period;
 
         /*
          * Link it up in the child's context:
          */
-        add_counter_to_ctx(child_counter, child_ctx);
+        add_event_to_ctx(child_event, child_ctx);
 
         /*
          * Get a reference to the parent filp - we will fput it
-         * when the child counter exits. This is safe to do because
+         * when the child event exits. This is safe to do because
          * we are in the parent and we know that the filp still
          * exists and has a nonzero count:
          */
-        atomic_long_inc(&parent_counter->filp->f_count);
+        atomic_long_inc(&parent_event->filp->f_count);
 
         /*
-         * Link this into the parent counter's child list
+         * Link this into the parent event's child list
          */
-        WARN_ON_ONCE(parent_counter->ctx->parent_ctx);
-        mutex_lock(&parent_counter->child_mutex);
-        list_add_tail(&child_counter->child_list, &parent_counter->child_list);
-        mutex_unlock(&parent_counter->child_mutex);
+        WARN_ON_ONCE(parent_event->ctx->parent_ctx);
+        mutex_lock(&parent_event->child_mutex);
+        list_add_tail(&child_event->child_list, &parent_event->child_list);
+        mutex_unlock(&parent_event->child_mutex);
 
-        return child_counter;
+        return child_event;
 }
 
-static int inherit_group(struct perf_counter *parent_counter,
+static int inherit_group(struct perf_event *parent_event,
               struct task_struct *parent,
-              struct perf_counter_context *parent_ctx,
+              struct perf_event_context *parent_ctx,
               struct task_struct *child,
-              struct perf_counter_context *child_ctx)
+              struct perf_event_context *child_ctx)
 {
-        struct perf_counter *leader;
-        struct perf_counter *sub;
-        struct perf_counter *child_ctr;
+        struct perf_event *leader;
+        struct perf_event *sub;
+        struct perf_event *child_ctr;
 
-        leader = inherit_counter(parent_counter, parent, parent_ctx,
+        leader = inherit_event(parent_event, parent, parent_ctx,
                                  child, NULL, child_ctx);
         if (IS_ERR(leader))
                 return PTR_ERR(leader);
-        list_for_each_entry(sub, &parent_counter->sibling_list, group_entry) {
-                child_ctr = inherit_counter(sub, parent, parent_ctx,
+        list_for_each_entry(sub, &parent_event->sibling_list, group_entry) {
+                child_ctr = inherit_event(sub, parent, parent_ctx,
                                             child, leader, child_ctx);
                 if (IS_ERR(child_ctr))
                         return PTR_ERR(child_ctr);
@@ -4552,74 +4552,74 @@ static int inherit_group(struct perf_counter *parent_counter,
         return 0;
 }
 
-static void sync_child_counter(struct perf_counter *child_counter,
+static void sync_child_event(struct perf_event *child_event,
                                struct task_struct *child)
 {
-        struct perf_counter *parent_counter = child_counter->parent;
+        struct perf_event *parent_event = child_event->parent;
         u64 child_val;
 
-        if (child_counter->attr.inherit_stat)
-                perf_counter_read_event(child_counter, child);
+        if (child_event->attr.inherit_stat)
+                perf_event_read_event(child_event, child);
 
-        child_val = atomic64_read(&child_counter->count);
+        child_val = atomic64_read(&child_event->count);
 
         /*
          * Add back the child's count to the parent's count:
          */
-        atomic64_add(child_val, &parent_counter->count);
-        atomic64_add(child_counter->total_time_enabled,
-                     &parent_counter->child_total_time_enabled);
-        atomic64_add(child_counter->total_time_running,
-                     &parent_counter->child_total_time_running);
+        atomic64_add(child_val, &parent_event->count);
+        atomic64_add(child_event->total_time_enabled,
+                     &parent_event->child_total_time_enabled);
+        atomic64_add(child_event->total_time_running,
+                     &parent_event->child_total_time_running);
 
         /*
-         * Remove this counter from the parent's list
+         * Remove this event from the parent's list
          */
-        WARN_ON_ONCE(parent_counter->ctx->parent_ctx);
-        mutex_lock(&parent_counter->child_mutex);
-        list_del_init(&child_counter->child_list);
-        mutex_unlock(&parent_counter->child_mutex);
+        WARN_ON_ONCE(parent_event->ctx->parent_ctx);
+        mutex_lock(&parent_event->child_mutex);
+        list_del_init(&child_event->child_list);
+        mutex_unlock(&parent_event->child_mutex);
 
         /*
-         * Release the parent counter, if this was the last
+         * Release the parent event, if this was the last
          * reference to it.
          */
-        fput(parent_counter->filp);
+        fput(parent_event->filp);
 }
 
 static void
-__perf_counter_exit_task(struct perf_counter *child_counter,
-                         struct perf_counter_context *child_ctx,
+__perf_event_exit_task(struct perf_event *child_event,
+                         struct perf_event_context *child_ctx,
                          struct task_struct *child)
 {
-        struct perf_counter *parent_counter;
+        struct perf_event *parent_event;
 
-        update_counter_times(child_counter);
-        perf_counter_remove_from_context(child_counter);
+        update_event_times(child_event);
+        perf_event_remove_from_context(child_event);
 
-        parent_counter = child_counter->parent;
+        parent_event = child_event->parent;
         /*
-         * It can happen that parent exits first, and has counters
+         * It can happen that parent exits first, and has events
          * that are still around due to the child reference. These
-         * counters need to be zapped - but otherwise linger.
+         * events need to be zapped - but otherwise linger.
          */
-        if (parent_counter) {
-                sync_child_counter(child_counter, child);
-                free_counter(child_counter);
+        if (parent_event) {
+                sync_child_event(child_event, child);
+                free_event(child_event);
         }
 }
 
 /*
- * When a child task exits, feed back counter values to parent counters.
+ * When a child task exits, feed back event values to parent events.
  */
-void perf_counter_exit_task(struct task_struct *child)
+void perf_event_exit_task(struct task_struct *child)
 {
-        struct perf_counter *child_counter, *tmp;
-        struct perf_counter_context *child_ctx;
+        struct perf_event *child_event, *tmp;
+        struct perf_event_context *child_ctx;
         unsigned long flags;
 
-        if (likely(!child->perf_counter_ctxp)) {
-                perf_counter_task(child, NULL, 0);
+        if (likely(!child->perf_event_ctxp)) {
+                perf_event_task(child, NULL, 0);
                 return;
         }
 
@@ -4630,37 +4630,37 @@ void perf_counter_exit_task(struct task_struct *child)
          * scheduled, so we are now safe from rescheduling changing
          * our context.
          */
-        child_ctx = child->perf_counter_ctxp;
-        __perf_counter_task_sched_out(child_ctx);
+        child_ctx = child->perf_event_ctxp;
+        __perf_event_task_sched_out(child_ctx);
 
         /*
          * Take the context lock here so that if find_get_context is
-         * reading child->perf_counter_ctxp, we wait until it has
+         * reading child->perf_event_ctxp, we wait until it has
          * incremented the context's refcount before we do put_ctx below.
          */
         spin_lock(&child_ctx->lock);
-        child->perf_counter_ctxp = NULL;
+        child->perf_event_ctxp = NULL;
         /*
          * If this context is a clone; unclone it so it can't get
          * swapped to another process while we're removing all
-         * the counters from it.
+         * the events from it.
          */
         unclone_ctx(child_ctx);
         spin_unlock_irqrestore(&child_ctx->lock, flags);
 
         /*
-         * Report the task dead after unscheduling the counters so that we
-         * won't get any samples after PERF_EVENT_EXIT. We can however still
-         * get a few PERF_EVENT_READ events.
+         * Report the task dead after unscheduling the events so that we
+         * won't get any samples after PERF_RECORD_EXIT. We can however still
+         * get a few PERF_RECORD_READ events.
          */
-        perf_counter_task(child, child_ctx, 0);
+        perf_event_task(child, child_ctx, 0);
 
         /*
          * We can recurse on the same lock type through:
          *
-         *   __perf_counter_exit_task()
-         *     sync_child_counter()
-         *       fput(parent_counter->filp)
+         *   __perf_event_exit_task()
+         *     sync_child_event()
+         *       fput(parent_event->filp)
          *         perf_release()
          *           mutex_lock(&ctx->mutex)
          *
@@ -4669,12 +4669,12 @@ void perf_counter_exit_task(struct task_struct *child)
         mutex_lock_nested(&child_ctx->mutex, SINGLE_DEPTH_NESTING);
 
 again:
-        list_for_each_entry_safe(child_counter, tmp, &child_ctx->group_list,
+        list_for_each_entry_safe(child_event, tmp, &child_ctx->group_list,
                                  group_entry)
-                __perf_counter_exit_task(child_counter, child_ctx, child);
+                __perf_event_exit_task(child_event, child_ctx, child);
 
         /*
-         * If the last counter was a group counter, it will have appended all
+         * If the last event was a group event, it will have appended all
          * its siblings to the list, but we obtained 'tmp' before that which
          * will still point to the list head terminating the iteration.
          */
@@ -4690,30 +4690,30 @@ again:
  * free an unexposed, unused context as created by inheritance by
  * init_task below, used by fork() in case of fail.
  */
-void perf_counter_free_task(struct task_struct *task)
+void perf_event_free_task(struct task_struct *task)
 {
-        struct perf_counter_context *ctx = task->perf_counter_ctxp;
-        struct perf_counter *counter, *tmp;
+        struct perf_event_context *ctx = task->perf_event_ctxp;
+        struct perf_event *event, *tmp;
 
         if (!ctx)
                 return;
 
         mutex_lock(&ctx->mutex);
 again:
-        list_for_each_entry_safe(counter, tmp, &ctx->group_list, group_entry) {
-                struct perf_counter *parent = counter->parent;
+        list_for_each_entry_safe(event, tmp, &ctx->group_list, group_entry) {
+                struct perf_event *parent = event->parent;
 
                 if (WARN_ON_ONCE(!parent))
                         continue;
 
                 mutex_lock(&parent->child_mutex);
-                list_del_init(&counter->child_list);
+                list_del_init(&event->child_list);
                 mutex_unlock(&parent->child_mutex);
 
                 fput(parent->filp);
 
-                list_del_counter(counter, ctx);
-                free_counter(counter);
+                list_del_event(event, ctx);
+                free_event(event);
         }
 
         if (!list_empty(&ctx->group_list))
@@ -4725,37 +4725,37 @@ again:
 }
 
 /*
- * Initialize the perf_counter context in task_struct
+ * Initialize the perf_event context in task_struct
  */
-int perf_counter_init_task(struct task_struct *child)
+int perf_event_init_task(struct task_struct *child)
 {
-        struct perf_counter_context *child_ctx, *parent_ctx;
-        struct perf_counter_context *cloned_ctx;
-        struct perf_counter *counter;
+        struct perf_event_context *child_ctx, *parent_ctx;
+        struct perf_event_context *cloned_ctx;
+        struct perf_event *event;
         struct task_struct *parent = current;
         int inherited_all = 1;
         int ret = 0;
 
-        child->perf_counter_ctxp = NULL;
+        child->perf_event_ctxp = NULL;
 
-        mutex_init(&child->perf_counter_mutex);
-        INIT_LIST_HEAD(&child->perf_counter_list);
+        mutex_init(&child->perf_event_mutex);
+        INIT_LIST_HEAD(&child->perf_event_list);
 
-        if (likely(!parent->perf_counter_ctxp))
+        if (likely(!parent->perf_event_ctxp))
                 return 0;
 
         /*
          * This is executed from the parent task context, so inherit
-         * counters that have been marked for cloning.
+         * events that have been marked for cloning.
          * First allocate and initialize a context for the child.
          */
 
-        child_ctx = kmalloc(sizeof(struct perf_counter_context), GFP_KERNEL);
+        child_ctx = kmalloc(sizeof(struct perf_event_context), GFP_KERNEL);
         if (!child_ctx)
                 return -ENOMEM;
 
-        __perf_counter_init_context(child_ctx, child);
-        child->perf_counter_ctxp = child_ctx;
+        __perf_event_init_context(child_ctx, child);
+        child->perf_event_ctxp = child_ctx;
         get_task_struct(child);
 
         /*
@@ -4781,16 +4781,16 @@ int perf_counter_init_task(struct task_struct *child)
          * We dont have to disable NMIs - we are only looking at
          * the list, not manipulating it:
          */
-        list_for_each_entry_rcu(counter, &parent_ctx->event_list, event_entry) {
-                if (counter != counter->group_leader)
+        list_for_each_entry_rcu(event, &parent_ctx->event_list, event_entry) {
+                if (event != event->group_leader)
                         continue;
 
-                if (!counter->attr.inherit) {
+                if (!event->attr.inherit) {
                         inherited_all = 0;
                         continue;
                 }
 
-                ret = inherit_group(counter, parent, parent_ctx,
+                ret = inherit_group(event, parent, parent_ctx,
                                              child, child_ctx);
                 if (ret) {
                         inherited_all = 0;
@@ -4804,7 +4804,7 @@ int perf_counter_init_task(struct task_struct *child)
                  * context, or of whatever the parent is a clone of.
                  * Note that if the parent is a clone, it could get
                  * uncloned at any point, but that doesn't matter
-                 * because the list of counters and the generation
+                 * because the list of events and the generation
                  * count can't have changed since we took the mutex.
                  */
                 cloned_ctx = rcu_dereference(parent_ctx->parent_ctx);
@@ -4825,41 +4825,41 @@ int perf_counter_init_task(struct task_struct *child)
         return ret;
 }
 
-static void __cpuinit perf_counter_init_cpu(int cpu)
+static void __cpuinit perf_event_init_cpu(int cpu)
 {
         struct perf_cpu_context *cpuctx;
 
         cpuctx = &per_cpu(perf_cpu_context, cpu);
-        __perf_counter_init_context(&cpuctx->ctx, NULL);
+        __perf_event_init_context(&cpuctx->ctx, NULL);
 
         spin_lock(&perf_resource_lock);
-        cpuctx->max_pertask = perf_max_counters - perf_reserved_percpu;
+        cpuctx->max_pertask = perf_max_events - perf_reserved_percpu;
         spin_unlock(&perf_resource_lock);
 
-        hw_perf_counter_setup(cpu);
+        hw_perf_event_setup(cpu);
 }
 
 #ifdef CONFIG_HOTPLUG_CPU
-static void __perf_counter_exit_cpu(void *info)
+static void __perf_event_exit_cpu(void *info)
 {
         struct perf_cpu_context *cpuctx = &__get_cpu_var(perf_cpu_context);
-        struct perf_counter_context *ctx = &cpuctx->ctx;
-        struct perf_counter *counter, *tmp;
+        struct perf_event_context *ctx = &cpuctx->ctx;
+        struct perf_event *event, *tmp;
 
-        list_for_each_entry_safe(counter, tmp, &ctx->group_list, group_entry)
-                __perf_counter_remove_from_context(counter);
+        list_for_each_entry_safe(event, tmp, &ctx->group_list, group_entry)
+                __perf_event_remove_from_context(event);
 }
-static void perf_counter_exit_cpu(int cpu)
+static void perf_event_exit_cpu(int cpu)
 {
         struct perf_cpu_context *cpuctx = &per_cpu(perf_cpu_context, cpu);
-        struct perf_counter_context *ctx = &cpuctx->ctx;
+        struct perf_event_context *ctx = &cpuctx->ctx;
 
         mutex_lock(&ctx->mutex);
-        smp_call_function_single(cpu, __perf_counter_exit_cpu, NULL, 1);
+        smp_call_function_single(cpu, __perf_event_exit_cpu, NULL, 1);
         mutex_unlock(&ctx->mutex);
 }
 #else
-static inline void perf_counter_exit_cpu(int cpu) { }
+static inline void perf_event_exit_cpu(int cpu) { }
 #endif
 
 static int __cpuinit
@@ -4871,17 +4871,17 @@ perf_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu)
 
         case CPU_UP_PREPARE:
         case CPU_UP_PREPARE_FROZEN:
-                perf_counter_init_cpu(cpu);
+                perf_event_init_cpu(cpu);
                 break;
 
         case CPU_ONLINE:
         case CPU_ONLINE_FROZEN:
-                hw_perf_counter_setup_online(cpu);
+                hw_perf_event_setup_online(cpu);
                 break;
 
         case CPU_DOWN_PREPARE:
         case CPU_DOWN_PREPARE_FROZEN:
-                perf_counter_exit_cpu(cpu);
+                perf_event_exit_cpu(cpu);
                 break;
 
         default:
@@ -4899,7 +4899,7 @@ static struct notifier_block __cpuinitdata perf_cpu_nb = {
         .priority               = 20,
 };
 
-void __init perf_counter_init(void)
+void __init perf_event_init(void)
 {
         perf_cpu_notify(&perf_cpu_nb, (unsigned long)CPU_UP_PREPARE,
                         (void *)(long)smp_processor_id());
@@ -4925,7 +4925,7 @@ perf_set_reserve_percpu(struct sysdev_class *class,
         err = strict_strtoul(buf, 10, &val);
         if (err)
                 return err;
-        if (val > perf_max_counters)
+        if (val > perf_max_events)
                 return -EINVAL;
 
         spin_lock(&perf_resource_lock);
@@ -4933,8 +4933,8 @@ perf_set_reserve_percpu(struct sysdev_class *class,
         for_each_online_cpu(cpu) {
                 cpuctx = &per_cpu(perf_cpu_context, cpu);
                 spin_lock_irq(&cpuctx->ctx.lock);
-                mpt = min(perf_max_counters - cpuctx->ctx.nr_counters,
-                          perf_max_counters - perf_reserved_percpu);
+                mpt = min(perf_max_events - cpuctx->ctx.nr_events,
+                          perf_max_events - perf_reserved_percpu);
                 cpuctx->max_pertask = mpt;
                 spin_unlock_irq(&cpuctx->ctx.lock);
         }
@@ -4989,12 +4989,12 @@ static struct attribute *perfclass_attrs[] = {
 
 static struct attribute_group perfclass_attr_group = {
         .attrs                  = perfclass_attrs,
-        .name                   = "perf_counters",
+        .name                   = "perf_events",
 };
 
-static int __init perf_counter_sysfs_init(void)
+static int __init perf_event_sysfs_init(void)
 {
         return sysfs_create_group(&cpu_sysdev_class.kset.kobj,
                                   &perfclass_attr_group);
 }
-device_initcall(perf_counter_sysfs_init);
+device_initcall(perf_event_sysfs_init);
diff --git a/kernel/sched.c b/kernel/sched.c
index faf4d463bbff..291c8d213d13 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -39,7 +39,7 @@
 #include <linux/completion.h>
 #include <linux/kernel_stat.h>
 #include <linux/debug_locks.h>
-#include <linux/perf_counter.h>
+#include <linux/perf_event.h>
 #include <linux/security.h>
 #include <linux/notifier.h>
 #include <linux/profile.h>
@@ -2059,7 +2059,7 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
                 if (task_hot(p, old_rq->clock, NULL))
                         schedstat_inc(p, se.nr_forced2_migrations);
 #endif
-                perf_swcounter_event(PERF_COUNT_SW_CPU_MIGRATIONS,
+                perf_sw_event(PERF_COUNT_SW_CPU_MIGRATIONS,
                                      1, 1, NULL, 0);
         }
         p->se.vruntime -= old_cfsrq->min_vruntime -
@@ -2724,7 +2724,7 @@ static void finish_task_switch(struct rq *rq, struct task_struct *prev)
          */
         prev_state = prev->state;
         finish_arch_switch(prev);
-        perf_counter_task_sched_in(current, cpu_of(rq));
+        perf_event_task_sched_in(current, cpu_of(rq));
         finish_lock_switch(rq, prev);
 
         fire_sched_in_preempt_notifiers(current);
@@ -5199,7 +5199,7 @@ void scheduler_tick(void)
         curr->sched_class->task_tick(rq, curr, 0);
         spin_unlock(&rq->lock);
 
-        perf_counter_task_tick(curr, cpu);
+        perf_event_task_tick(curr, cpu);
 
 #ifdef CONFIG_SMP
         rq->idle_at_tick = idle_cpu(cpu);
@@ -5415,7 +5415,7 @@ need_resched_nonpreemptible:
 
         if (likely(prev != next)) {
                 sched_info_switch(prev, next);
-                perf_counter_task_sched_out(prev, next, cpu);
+                perf_event_task_sched_out(prev, next, cpu);
 
                 rq->nr_switches++;
                 rq->curr = next;
@@ -7692,7 +7692,7 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu)
 /*
  * Register at high priority so that task migration (migrate_all_tasks)
  * happens before everything else.  This has to be lower priority than
- * the notifier in the perf_counter subsystem, though.
+ * the notifier in the perf_event subsystem, though.
  */
 static struct notifier_block __cpuinitdata migration_notifier = {
         .notifier_call = migration_call,
@@ -9549,7 +9549,7 @@ void __init sched_init(void)
         alloc_cpumask_var(&cpu_isolated_map, GFP_NOWAIT);
 #endif /* SMP */
 
-        perf_counter_init();
+        perf_event_init();
 
         scheduler_running = 1;
 }
diff --git a/kernel/sys.c b/kernel/sys.c
index b3f1097c76fa..ea5c3bcac881 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -14,7 +14,7 @@
 #include <linux/prctl.h>
 #include <linux/highuid.h>
 #include <linux/fs.h>
-#include <linux/perf_counter.h>
+#include <linux/perf_event.h>
 #include <linux/resource.h>
 #include <linux/kernel.h>
 #include <linux/kexec.h>
@@ -1511,11 +1511,11 @@ SYSCALL_DEFINE5(prctl, int, option, unsigned long, arg2, unsigned long, arg3,
                 case PR_SET_TSC:
                         error = SET_TSC_CTL(arg2);
                         break;
-                case PR_TASK_PERF_COUNTERS_DISABLE:
-                        error = perf_counter_task_disable();
+                case PR_TASK_PERF_EVENTS_DISABLE:
+                        error = perf_event_task_disable();
                         break;
-                case PR_TASK_PERF_COUNTERS_ENABLE:
-                        error = perf_counter_task_enable();
+                case PR_TASK_PERF_EVENTS_ENABLE:
+                        error = perf_event_task_enable();
                         break;
                 case PR_GET_TIMERSLACK:
                         error = current->timer_slack_ns;
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index 68320f6b07b5..515bc230ac2a 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -177,4 +177,4 @@ cond_syscall(sys_eventfd);
 cond_syscall(sys_eventfd2);
 
 /* performance counters: */
-cond_syscall(sys_perf_counter_open);
+cond_syscall(sys_perf_event_open);
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 1a631ba684a4..6ba49c7cb128 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -50,7 +50,7 @@
 #include <linux/reboot.h>
 #include <linux/ftrace.h>
 #include <linux/slow-work.h>
-#include <linux/perf_counter.h>
+#include <linux/perf_event.h>
 
 #include <asm/uaccess.h>
 #include <asm/processor.h>
@@ -964,28 +964,28 @@ static struct ctl_table kern_table[] = {
                 .child          = slow_work_sysctls,
         },
 #endif
-#ifdef CONFIG_PERF_COUNTERS
+#ifdef CONFIG_PERF_EVENTS
         {
                 .ctl_name       = CTL_UNNUMBERED,
-                .procname       = "perf_counter_paranoid",
-                .data           = &sysctl_perf_counter_paranoid,
-                .maxlen         = sizeof(sysctl_perf_counter_paranoid),
+                .procname       = "perf_event_paranoid",
+                .data           = &sysctl_perf_event_paranoid,
+                .maxlen         = sizeof(sysctl_perf_event_paranoid),
                 .mode           = 0644,
                 .proc_handler   = &proc_dointvec,
         },
         {
                 .ctl_name       = CTL_UNNUMBERED,
-                .procname       = "perf_counter_mlock_kb",
-                .data           = &sysctl_perf_counter_mlock,
-                .maxlen         = sizeof(sysctl_perf_counter_mlock),
+                .procname       = "perf_event_mlock_kb",
+                .data           = &sysctl_perf_event_mlock,
+                .maxlen         = sizeof(sysctl_perf_event_mlock),
                 .mode           = 0644,
                 .proc_handler   = &proc_dointvec,
         },
         {
                 .ctl_name       = CTL_UNNUMBERED,
-                .procname       = "perf_counter_max_sample_rate",
-                .data           = &sysctl_perf_counter_sample_rate,
-                .maxlen         = sizeof(sysctl_perf_counter_sample_rate),
+                .procname       = "perf_event_max_sample_rate",
+                .data           = &sysctl_perf_event_sample_rate,
+                .maxlen         = sizeof(sysctl_perf_event_sample_rate),
                 .mode           = 0644,
                 .proc_handler   = &proc_dointvec,
         },
diff --git a/kernel/timer.c b/kernel/timer.c
index bbb51074680e..811e5c391456 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -37,7 +37,7 @@
 #include <linux/delay.h>
 #include <linux/tick.h>
 #include <linux/kallsyms.h>
-#include <linux/perf_counter.h>
+#include <linux/perf_event.h>
 #include <linux/sched.h>
 
 #include <asm/uaccess.h>
@@ -1187,7 +1187,7 @@ static void run_timer_softirq(struct softirq_action *h)
 {
         struct tvec_base *base = __get_cpu_var(tvec_bases);
 
-        perf_counter_do_pending();
+        perf_event_do_pending();
 
         hrtimer_run_pending();
 
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index 8712ce3c6a0e..233f3483ac83 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -2,7 +2,7 @@
 #include <trace/events/syscalls.h>
 #include <linux/kernel.h>
 #include <linux/ftrace.h>
-#include <linux/perf_counter.h>
+#include <linux/perf_event.h>
 #include <asm/syscall.h>
 
 #include "trace_output.h"
@@ -414,7 +414,7 @@ static void prof_syscall_enter(struct pt_regs *regs, long id)
                 rec->nr = syscall_nr;
                 syscall_get_arguments(current, regs, 0, sys_data->nb_args,
                                        (unsigned long *)&rec->args);
-                perf_tpcounter_event(sys_data->enter_id, 0, 1, rec, size);
+                perf_tp_event(sys_data->enter_id, 0, 1, rec, size);
         } while(0);
 }
 
@@ -476,7 +476,7 @@ static void prof_syscall_exit(struct pt_regs *regs, long ret)
         rec.nr = syscall_nr;
         rec.ret = syscall_get_return_value(current, regs);
 
-        perf_tpcounter_event(sys_data->exit_id, 0, 1, &rec, sizeof(rec));
+        perf_tp_event(sys_data->exit_id, 0, 1, &rec, sizeof(rec));
 }
 
 int reg_prof_syscall_exit(char *name)