arm64: perf: add support for Cortex-A78

Add support for Cortex-A78 using generic PMUv3 for now.

Signed-off-by: Seiya Wang <seiya.wang@mediatek.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20210203055348.4935-2-seiya.wang@mediatek.com
Signed-off-by: Will Deacon <will@kernel.org>

arch/arm64/kernel/perf_event.c

@@ -1188,6 +1188,12 @@ static int armv8_a77_pmu_init(struct arm_pmu *cpu_pmu)
 				       armv8_pmuv3_map_event);
 }
 
+static int armv8_a78_pmu_init(struct arm_pmu *cpu_pmu)
+{
+	return armv8_pmu_init_nogroups(cpu_pmu, "armv8_cortex_a78",
+				       armv8_pmuv3_map_event);
+}
+
 static int armv8_e1_pmu_init(struct arm_pmu *cpu_pmu)
 {
 	return armv8_pmu_init_nogroups(cpu_pmu, "armv8_neoverse_e1",
@@ -1225,6 +1231,7 @@ static const struct of_device_id armv8_pmu_of_device_ids[] = {
 	{.compatible = "arm,cortex-a75-pmu",	.data = armv8_a75_pmu_init},
 	{.compatible = "arm,cortex-a76-pmu",	.data = armv8_a76_pmu_init},
 	{.compatible = "arm,cortex-a77-pmu",	.data = armv8_a77_pmu_init},
+	{.compatible = "arm,cortex-a78-pmu",	.data = armv8_a78_pmu_init},
 	{.compatible = "arm,neoverse-e1-pmu",	.data = armv8_e1_pmu_init},
 	{.compatible = "arm,neoverse-n1-pmu",	.data = armv8_n1_pmu_init},
 	{.compatible = "cavium,thunder-pmu",	.data = armv8_thunder_pmu_init},