[PATCH 2/3] arm64: perf: Support Denver and Carmel PMUs

Thierry Reding
2021-12-07T15:08:05Z

From: Thierry Reding <treding@nvidia.com>

Add support for the NVIDIA Denver and Carmel PMUs using the generic
PMUv3 event map for now.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
arch/arm64/kernel/perf_event.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index b4044469527e..8c8cf369c450 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -1247,6 +1247,18 @@ static int armv8_vulcan_pmu_init(struct arm_pmu *cpu_pmu)
armv8_vulcan_map_event);
}

+static int armv8_denver_pmu_init(struct arm_pmu *cpu_pmu)
+{
+ return armv8_pmu_init_nogroups(cpu_pmu, "armv8_nvidia_denver",
+ armv8_pmuv3_map_event);
+}
+
+static int armv8_carmel_pmu_init(struct arm_pmu *cpu_pmu)
+{
+ return armv8_pmu_init_nogroups(cpu_pmu, "armv8_nvidia_carmel",
+ armv8_pmuv3_map_event);
+}
+
static const struct of_device_id armv8_pmu_of_device_ids[] = {
{.compatible = "arm,armv8-pmuv3", .data = armv8_pmuv3_init},
{.compatible = "arm,cortex-a34-pmu", .data = armv8_a34_pmu_init},
@@ -1265,6 +1277,8 @@ static const struct of_device_id armv8_pmu_of_device_ids[] = {
{.compatible = "arm,neoverse-n1-pmu", .data = armv8_n1_pmu_init},
{.compatible = "cavium,thunder-pmu", .data = armv8_thunder_pmu_init},
{.compatible = "brcm,vulcan-pmu", .data = armv8_vulcan_pmu_init},
+ {.compatible = "nvidia,denver-pmu", .data = armv8_denver_pmu_init},
+ {.compatible = "nvidia,carmel-pmu", .data = armv8_carmel_pmu_init},
{},
};

--
2.33.1