Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf events changes from Ingo Molnar:

 "- kernel side:

   - Intel uncore PMU support for Nehalem and Sandy Bridge CPUs, we
     support both the events available via the MSR and via the PCI
     access space.

   - various uprobes cleanups and restructurings

   - PMU driver quirks by microcode version and required x86 microcode
     loader cleanups/robustization

   - various tracing robustness updates

   - static keys: remove obsolete static_branch()

  - tooling side:

   - GTK browser improvements

   - perf report browser: support screenshots to file

   - more automated tests

   - perf kvm improvements

   - perf bench refinements

   - build environment improvements

   - pipe mode improvements

   - libtraceevent updates, we have now hopefully merged most bits with
     the out of tree forked code base

  ... and many other goodies."

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (138 commits)
  tracing: Check for allocation failure in __tracing_open()
  perf/x86: Fix intel_perfmon_event_mapformatting
  jump label: Remove static_branch()
  tracepoint: Use static_key_false(), since static_branch() is deprecated
  perf/x86: Uncore filter support for SandyBridge-EP
  perf/x86: Detect number of instances of uncore CBox
  perf/x86: Fix event constraint for SandyBridge-EP C-Box
  perf/x86: Use 0xff as pseudo code for fixed uncore event
  perf/x86: Save a few bytes in 'struct x86_pmu'
  perf/x86: Add a microcode revision check for SNB-PEBS
  perf/x86: Improve debug output in check_hw_exists()
  perf/x86/amd: Unify AMD's generic and family 15h pmus
  perf/x86: Move Intel specific code to intel_pmu_init()
  perf/x86: Rename Intel specific macros
  perf/x86: Fix USER/KERNEL tagging of samples
  perf tools: Split event symbols arrays to hw and sw parts
  perf tools: Split out PE_VALUE_SYM parsing token to SW and HW tokens
  perf tools: Add empty rule for new line in event syntax parsing
  perf test: Use ARRAY_SIZE in parse events tests
  tools lib traceevent: Cleanup realloc use
  ...

1 files changed, 11 insertions, 12 deletions

diff --git a/drivers/oprofile/oprofile_perf.c b/drivers/oprofile/oprofile_perf.c
index efc4b7f308cf..f3cfa0b9adfa 100644
--- a/drivers/oprofile/oprofile_perf.c
+++ b/drivers/oprofile/oprofile_perf.c
@@ -1,5 +1,6 @@
 /*
  * Copyright 2010 ARM Ltd.
+ * Copyright 2012 Advanced Micro Devices, Inc., Robert Richter
  *
  * Perf-events backend for OProfile.
  */
@@ -25,7 +26,7 @@ static int oprofile_perf_enabled;
 static DEFINE_MUTEX(oprofile_perf_mutex);
 
 static struct op_counter_config *counter_config;
-static struct perf_event **perf_events[NR_CPUS];
+static DEFINE_PER_CPU(struct perf_event **, perf_events);
 static int num_counters;
 
 /*
@@ -38,7 +39,7 @@ static void op_overflow_handler(struct perf_event *event,
 	u32 cpu = smp_processor_id();
 
 	for (id = 0; id < num_counters; ++id)
-		if (perf_events[cpu][id] == event)
+		if (per_cpu(perf_events, cpu)[id] == event)
 			break;
 
 	if (id != num_counters)
@@ -74,7 +75,7 @@ static int op_create_counter(int cpu, int event)
 {
 	struct perf_event *pevent;
 
-	if (!counter_config[event].enabled || perf_events[cpu][event])
+	if (!counter_config[event].enabled || per_cpu(perf_events, cpu)[event])
 		return 0;
 
 	pevent = perf_event_create_kernel_counter(&counter_config[event].attr,
@@ -91,18 +92,18 @@ static int op_create_counter(int cpu, int event)
 		return -EBUSY;
 	}
 
-	perf_events[cpu][event] = pevent;
+	per_cpu(perf_events, cpu)[event] = pevent;
 
 	return 0;
 }
 
 static void op_destroy_counter(int cpu, int event)
 {
-	struct perf_event *pevent = perf_events[cpu][event];
+	struct perf_event *pevent = per_cpu(perf_events, cpu)[event];
 
 	if (pevent) {
 		perf_event_release_kernel(pevent);
-		perf_events[cpu][event] = NULL;
+		per_cpu(perf_events, cpu)[event] = NULL;
 	}
 }
 
@@ -257,12 +258,12 @@ void oprofile_perf_exit(void)
 
 	for_each_possible_cpu(cpu) {
 		for (id = 0; id < num_counters; ++id) {
-			event = perf_events[cpu][id];
+			event = per_cpu(perf_events, cpu)[id];
 			if (event)
 				perf_event_release_kernel(event);
 		}
 
-		kfree(perf_events[cpu]);
+		kfree(per_cpu(perf_events, cpu));
 	}
 
 	kfree(counter_config);
@@ -277,8 +278,6 @@ int __init oprofile_perf_init(struct oprofile_operations *ops)
 	if (ret)
 		return ret;
 
-	memset(&perf_events, 0, sizeof(perf_events));
-
 	num_counters = perf_num_counters();
 	if (num_counters <= 0) {
 		pr_info("oprofile: no performance counters\n");
@@ -298,9 +297,9 @@ int __init oprofile_perf_init(struct oprofile_operations *ops)
 	}
 
 	for_each_possible_cpu(cpu) {
-		perf_events[cpu] = kcalloc(num_counters,
+		per_cpu(perf_events, cpu) = kcalloc(num_counters,
 				sizeof(struct perf_event *), GFP_KERNEL);
-		if (!perf_events[cpu]) {
+		if (!per_cpu(perf_events, cpu)) {
 			pr_info("oprofile: failed to allocate %d perf events "
 					"for cpu %d\n", num_counters, cpu);
 			ret = -ENOMEM;