[PATCH 4/5] powerpc/perf: Use PM_INST_DISP for generic instructions sample

[Madhavan Srinivasan <maddy@linux.vnet.ibm.com>]

PM_INST_CMPL may not provide right counts in all
sampling scenarios in power9 DD1, instead use PM_INST_DISP.
Patch also update generic instruction sampling with the same.

Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
---
 arch/powerpc/perf/power9-pmu.c | 55 ++++++++++++++++++++++++++++++++++++++----
 1 file changed, 50 insertions(+), 5 deletions(-)

diff --git a/arch/powerpc/perf/power9-pmu.c b/arch/powerpc/perf/power9-pmu.c
index b38acff8a791..a956bda9ecf4 100644
--- a/arch/powerpc/perf/power9-pmu.c
+++ b/arch/powerpc/perf/power9-pmu.c
@@ -125,6 +125,7 @@ GENERIC_EVENT_ATTR(cpu-cycles,			PM_CYC);
 GENERIC_EVENT_ATTR(stalled-cycles-frontend,	PM_ICT_NOSLOT_CYC);
 GENERIC_EVENT_ATTR(stalled-cycles-backend,	PM_CMPLU_STALL);
 GENERIC_EVENT_ATTR(instructions,		PM_INST_CMPL);
+GENERIC_EVENT_ATTR(instruction,			PM_INST_DISP);
 GENERIC_EVENT_ATTR(branch-instructions,		PM_BRU_CMPL);
 GENERIC_EVENT_ATTR(branch-misses,		PM_BR_MPRED_CMPL);
 GENERIC_EVENT_ATTR(cache-references,		PM_LD_REF_L1);
@@ -147,6 +148,34 @@ CACHE_EVENT_ATTR(branch-loads,			PM_BRU_CMPL);
 CACHE_EVENT_ATTR(dTLB-load-misses,		PM_DTLB_MISS);
 CACHE_EVENT_ATTR(iTLB-load-misses,		PM_ITLB_MISS);
 
+static struct attribute *power9_events_attr_dd1[] = {
+	GENERIC_EVENT_PTR(PM_CYC),
+	GENERIC_EVENT_PTR(PM_ICT_NOSLOT_CYC),
+	GENERIC_EVENT_PTR(PM_CMPLU_STALL),
+	GENERIC_EVENT_PTR(PM_INST_DISP),
+	GENERIC_EVENT_PTR(PM_BRU_CMPL),
+	GENERIC_EVENT_PTR(PM_BR_MPRED_CMPL),
+	GENERIC_EVENT_PTR(PM_LD_REF_L1),
+	GENERIC_EVENT_PTR(PM_LD_MISS_L1_FIN),
+	CACHE_EVENT_PTR(PM_LD_MISS_L1_FIN),
+	CACHE_EVENT_PTR(PM_LD_REF_L1),
+	CACHE_EVENT_PTR(PM_L1_PREF),
+	CACHE_EVENT_PTR(PM_ST_MISS_L1),
+	CACHE_EVENT_PTR(PM_L1_ICACHE_MISS),
+	CACHE_EVENT_PTR(PM_INST_FROM_L1),
+	CACHE_EVENT_PTR(PM_IC_PREF_WRITE),
+	CACHE_EVENT_PTR(PM_DATA_FROM_L3MISS),
+	CACHE_EVENT_PTR(PM_DATA_FROM_L3),
+	CACHE_EVENT_PTR(PM_L3_PREF_ALL),
+	CACHE_EVENT_PTR(PM_L2_ST_MISS),
+	CACHE_EVENT_PTR(PM_L2_ST),
+	CACHE_EVENT_PTR(PM_BR_MPRED_CMPL),
+	CACHE_EVENT_PTR(PM_BRU_CMPL),
+	CACHE_EVENT_PTR(PM_DTLB_MISS),
+	CACHE_EVENT_PTR(PM_ITLB_MISS),
+	NULL
+};
+
 static struct attribute *power9_events_attr[] = {
 	GENERIC_EVENT_PTR(PM_CYC),
 	GENERIC_EVENT_PTR(PM_ICT_NOSLOT_CYC),
@@ -175,17 +204,22 @@ static struct attribute *power9_events_attr[] = {
 	NULL
 };
 
-static struct attribute_group power9_pmu_events_group = {
+static struct attribute_group power9_pmu_events_group_dd1 = {
 	.name = "events",
-	.attrs = power9_events_attr,
+	.attrs = power9_events_attr_dd1,
 };
 
 static const struct attribute_group *power9_isa207_pmu_attr_groups[] = {
 	&isa207_pmu_format_group,
-	&power9_pmu_events_group,
+	&power9_pmu_events_group_dd1,
 	NULL,
 };
 
+static struct attribute_group power9_pmu_events_group = {
+	.name = "events",
+	.attrs = power9_events_attr,
+};
+
 PMU_FORMAT_ATTR(event,		"config:0-51");
 PMU_FORMAT_ATTR(pmcxsel,	"config:0-7");
 PMU_FORMAT_ATTR(mark,		"config:8");
@@ -228,6 +262,17 @@ static const struct attribute_group *power9_pmu_attr_groups[] = {
 	NULL,
 };
 
+static int power9_generic_events_dd1[] = {
+	[PERF_COUNT_HW_CPU_CYCLES] =			PM_CYC,
+	[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =	PM_ICT_NOSLOT_CYC,
+	[PERF_COUNT_HW_STALLED_CYCLES_BACKEND] =	PM_CMPLU_STALL,
+	[PERF_COUNT_HW_INSTRUCTIONS] =			PM_INST_DISP,
+	[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] =		PM_BRU_CMPL,
+	[PERF_COUNT_HW_BRANCH_MISSES] =			PM_BR_MPRED_CMPL,
+	[PERF_COUNT_HW_CACHE_REFERENCES] =		PM_LD_REF_L1,
+	[PERF_COUNT_HW_CACHE_MISSES] =			PM_LD_MISS_L1_FIN,
+};
+
 static int power9_generic_events[] = {
 	[PERF_COUNT_HW_CPU_CYCLES] =			PM_CYC,
 	[PERF_COUNT_HW_STALLED_CYCLES_FRONTEND] =	PM_ICT_NOSLOT_CYC,
@@ -401,8 +446,8 @@ static struct power_pmu power9_isa207_pmu = {
 	.get_alternatives	= power9_get_alternatives,
 	.disable_pmc		= isa207_disable_pmc,
 	.flags			= PPMU_NO_SIAR | PPMU_ARCH_207S,
-	.n_generic		= ARRAY_SIZE(power9_generic_events),
-	.generic_events		= power9_generic_events,
+	.n_generic		= ARRAY_SIZE(power9_generic_events_dd1),
+	.generic_events		= power9_generic_events_dd1,
 	.cache_events		= &power9_cache_events,
 	.attr_groups		= power9_isa207_pmu_attr_groups,
 	.bhrb_nr		= 32,
-- 
2.7.4