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arm64: perf: add support for Cortex-A73 

The Cortex-A73 uses some implementation defined perf events.

This patch sets up the necessary mapping for Cortex-A73.

Mappings are based on Cortex-A73 TRM r0p2, section 11.9 Events
(pages 11-457 to 11-460).

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Julien Thierry 2017-08-09 17:46:38 +01:00 committed by Will Deacon
parent d0d09d4d99
commit 5561b6c5e9
2 changed files with 38 additions and 0 deletions
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1
Documentation/devicetree/bindings/arm/pmu.txt
View File

@ -9,6 +9,7 @@ Required properties:
- compatible : should be one of
"apm,potenza-pmu"
"arm,armv8-pmuv3"
"arm,cortex-a73-pmu"
"arm,cortex-a72-pmu"
"arm,cortex-a57-pmu"
"arm,cortex-a53-pmu"

37
arch/arm64/kernel/perf_event.c
View File

@ -255,6 +255,21 @@ static const unsigned armv8_a57_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
[C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_WR,
};
static const unsigned armv8_a73_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
PERF_CACHE_MAP_ALL_UNSUPPORTED,
[C(L1D)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_RD,
[C(L1D)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_L1D_CACHE_WR,
[C(NODE)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_RD,
[C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_WR,
[C(NODE)][C(OP_READ)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_RD,
[C(NODE)][C(OP_WRITE)][C(RESULT_ACCESS)] = ARMV8_IMPDEF_PERFCTR_BUS_ACCESS_WR,
};
static const unsigned armv8_thunder_perf_cache_map[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
@ -868,6 +883,11 @@ static int armv8_a57_map_event(struct perf_event *event)
return __armv8_pmuv3_map_event(event, NULL, &armv8_a57_perf_cache_map);
}
static int armv8_a73_map_event(struct perf_event *event)
{
return __armv8_pmuv3_map_event(event, NULL, &armv8_a73_perf_cache_map);
}
static int armv8_thunder_map_event(struct perf_event *event)
{
return __armv8_pmuv3_map_event(event, NULL,
@ -1018,6 +1038,22 @@ static int armv8_a72_pmu_init(struct arm_pmu *cpu_pmu)
return 0;
}
static int armv8_a73_pmu_init(struct arm_pmu *cpu_pmu)
{
int ret = armv8_pmu_init(cpu_pmu);
if (ret)
return ret;
cpu_pmu->name = "armv8_cortex_a73";
cpu_pmu->map_event = armv8_a73_map_event;
cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_EVENTS] =
&armv8_pmuv3_events_attr_group;
cpu_pmu->attr_groups[ARMPMU_ATTR_GROUP_FORMATS] =
&armv8_pmuv3_format_attr_group;
return 0;
}
static int armv8_thunder_pmu_init(struct arm_pmu *cpu_pmu)
{
int ret = armv8_pmu_init(cpu_pmu);
@ -1055,6 +1091,7 @@ static const struct of_device_id armv8_pmu_of_device_ids[] = {
{.compatible = "arm,cortex-a53-pmu", .data = armv8_a53_pmu_init},
{.compatible = "arm,cortex-a57-pmu", .data = armv8_a57_pmu_init},
{.compatible = "arm,cortex-a72-pmu", .data = armv8_a72_pmu_init},
{.compatible = "arm,cortex-a73-pmu", .data = armv8_a73_pmu_init},
{.compatible = "cavium,thunder-pmu", .data = armv8_thunder_pmu_init},
{.compatible = "brcm,vulcan-pmu", .data = armv8_vulcan_pmu_init},
{},