perf/x86: Add hardware events translations for AMD cpus

Add support for AMD processors to display 'events' sysfs
directory (/sys/devices/cpu/events/) with hw event translations:

  # ls  /sys/devices/cpu/events/
  branch-instructions
  branch-misses
  bus-cycles
  cache-misses
  cache-references
  cpu-cycles
  instructions
  ref-cycles
  stalled-cycles-backend
  stalled-cycles-frontend

Suggested-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1349873598-12583-5-git-send-email-jolsa@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 9 insertions, 2 deletions

diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
index 6106d3b44aa1..93b9e1181f83 100644
--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -1603,6 +1603,13 @@ static struct attribute *intel_arch_formats_attr[] = {
         NULL,
 };
 
+ssize_t intel_event_sysfs_show(char *page, u64 config)
+{
+        u64 event = (config & ARCH_PERFMON_EVENTSEL_EVENT);
+
+        return x86_event_sysfs_show(page, config, event);
+}
+
 static __initconst const struct x86_pmu core_pmu = {
         .name                   = "core",
         .handle_irq             = x86_pmu_handle_irq,
@@ -1628,7 +1635,7 @@ static __initconst const struct x86_pmu core_pmu = {
         .event_constraints      = intel_core_event_constraints,
         .guest_get_msrs         = core_guest_get_msrs,
         .format_attrs           = intel_arch_formats_attr,
-        .events_sysfs_show      = x86_event_sysfs_show,
+        .events_sysfs_show      = intel_event_sysfs_show,
 };
 
 struct intel_shared_regs *allocate_shared_regs(int cpu)
@@ -1767,7 +1774,7 @@ static __initconst const struct x86_pmu intel_pmu = {
         .pebs_aliases           = intel_pebs_aliases_core2,
 
         .format_attrs           = intel_arch3_formats_attr,
-        .events_sysfs_show      = x86_event_sysfs_show,
+        .events_sysfs_show      = intel_event_sysfs_show,
 
         .cpu_prepare            = intel_pmu_cpu_prepare,
         .cpu_starting           = intel_pmu_cpu_starting,