[PATCH 4/7] powerpc/perf: Create mem-loads/mem-stores events for Power7
'perf mem' command depends on the support for generic hardware events
'mem-loads' and 'mem-stores'.
Create those events for Power7 and map them both to the event PM_MRK_GRP_CMPL.
While PM_MRK_GRP_CMPL is strictly not restricted to loads and stores, that
seems to be a close/resonable match.
Cc: Stephane Eranian <eran...@google.com>
Cc: Paul Mckerras <pau...@samba.org>
Cc: Michael Ellerman <mich...@ellerman.id.au>
Signed-off-by: Sukadev Bhattiprolu <suka...@linux.vnet.ibm.com>
---
arch/powerpc/perf/power7-pmu.c | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/perf/power7-pmu.c b/arch/powerpc/perf/power7-pmu.c
index 56c67bc..161861d 100644
--- a/arch/powerpc/perf/power7-pmu.c
+++ b/arch/powerpc/perf/power7-pmu.c
@@ -58,6 +58,18 @@
enum {
#include "power7-events-list.h"
+ /*
+ * Normally, generic events like 'cycles' are aliases for a real
+ * event PM_CYC. So we want both the event and the alias listed in
+ * sysfs. But mem-loads and mem-stores are just aliases - they are
+ * not listed in power7_generic_events[] for instance. Adding them
+ * to power7-events-list.h will unnecessariliy create PM_MEM_LOADS
+ * and PM_MEM_STORES events in sysfs when that file is processed
+ * again below. To save a couple of sysfs entries, define these
+ * separately.
+ */
+ EVENT(PM_MEM_LOADS, 0x40030)
+ EVENT(PM_MEM_STORES, 0x40030)
};
#undef EVENT
@@ -382,6 +394,8 @@ GENERIC_EVENT_ATTR(cache-references,
PM_LD_REF_L1);
GENERIC_EVENT_ATTR(cache-misses, PM_LD_MISS_L1);
GENERIC_EVENT_ATTR(branch-instructions, PM_BRU_FIN);
GENERIC_EVENT_ATTR(branch-misses, PM_BR_MPRED);
+GENERIC_EVENT_ATTR(mem-loads, PM_MEM_LOADS);
+GENERIC_EVENT_ATTR(mem-stores, PM_MEM_STORES);
#define EVENT(_name, _code) POWER_EVENT_ATTR(_name, _name);
#include "power7-events-list.h"
@@ -398,6 +412,8 @@ static struct attribute *power7_events_attr[] = {
GENERIC_EVENT_PTR(PM_LD_MISS_L1),
GENERIC_EVENT_PTR(PM_BRU_FIN),
GENERIC_EVENT_PTR(PM_BR_MPRED),
+ GENERIC_EVENT_PTR(PM_MEM_LOADS),
+ GENERIC_EVENT_PTR(PM_MEM_STORES),
#include "power7-events-list.h"
#undef EVENT
--
1.7.1
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