[PATCH] kernel: support RISC-V PMU

[Qingfang Deng]

Add RISC-V PMU config symbols and enable them for riscv64.

Signed-off-by: Qingfang Deng <dqfext at gmail.com>
---
 config/Config-kernel.in         | 10 ++++++++++
 target/linux/generic/config-6.1 |  3 +++
 2 files changed, 13 insertions(+)

diff --git a/config/Config-kernel.in b/config/Config-kernel.in
index 78155eb592..37e2cc613c 100644
--- a/config/Config-kernel.in
+++ b/config/Config-kernel.in
@@ -50,6 +50,15 @@ config KERNEL_ARM_PMU
 	default y if TARGET_armsr_armv8
 	depends on (arm || aarch64)
 
+config KERNEL_RISCV_PMU
+	bool
+	select KERNEL_RISCV_PMU_SBI
+	depends on riscv64
+
+config KERNEL_RISCV_PMU_SBI
+	bool
+	depends on riscv64
+
 config KERNEL_X86_VSYSCALL_EMULATION
 	bool "Enable vsyscall emulation"
 	depends on x86_64
@@ -70,6 +79,7 @@ config KERNEL_X86_VSYSCALL_EMULATION
 config KERNEL_PERF_EVENTS
 	bool "Compile the kernel with performance events and counters"
 	select KERNEL_ARM_PMU if (arm || aarch64)
+	select KERNEL_RISCV_PMU if riscv64
 
 config KERNEL_PROFILING
 	bool "Compile the kernel with profiling enabled"
diff --git a/target/linux/generic/config-6.1 b/target/linux/generic/config-6.1
index 34a6503ce0..66215a6960 100644
--- a/target/linux/generic/config-6.1
+++ b/target/linux/generic/config-6.1
@@ -5303,6 +5303,9 @@ CONFIG_RFKILL=y
 # CONFIG_RING_BUFFER_BENCHMARK is not set
 # CONFIG_RING_BUFFER_STARTUP_TEST is not set
 # CONFIG_RING_BUFFER_VALIDATE_TIME_DELTAS is not set
+# CONFIG_RISCV_PMU is not set
+# CONFIG_RISCV_PMU_LEGACY is not set
+# CONFIG_RISCV_PMU_SBI is not set
 # CONFIG_RMI4_CORE is not set
 # CONFIG_RMNET is not set
 # CONFIG_ROCKCHIP_PHY is not set
-- 
2.34.1