diff options
| author | Atish Patra <atish.patra@wdc.com> | 2022-02-18 16:46:57 -0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-03-21 14:58:33 -0700 |
| commit | e9991434596f5373dfd75857b445eb92a9253c56 (patch) | |
| tree | b39e3c364207841faf568f86332c8a087b8fe622 /drivers/perf/Kconfig | |
| parent | 90beae5185c260074db409241247630036cf93a0 (diff) | |
RISC-V: Add perf platform driver based on SBI PMU extension
RISC-V SBI specification added a PMU extension that allows to configure
start/stop any pmu counter. The RISC-V perf can use most of the generic
perf features except interrupt overflow and event filtering based on
privilege mode which will be added in future.
It also allows to monitor a handful of firmware counters that can provide
insights into firmware activity during a performance analysis.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'drivers/perf/Kconfig')
| -rw-r--r-- | drivers/perf/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/perf/Kconfig b/drivers/perf/Kconfig index 386162ad858a..5645b5615c14 100644 --- a/drivers/perf/Kconfig +++ b/drivers/perf/Kconfig @@ -76,6 +76,16 @@ config RISCV_PMU_LEGACY of cycle/instruction counter and doesn't support counter overflow, or programmable counters. It will be removed in future. +config RISCV_PMU_SBI + depends on RISCV_PMU && RISCV_SBI + bool "RISC-V PMU based on SBI PMU extension" + default y + help + Say y if you want to use the CPU performance monitor + using SBI PMU extension on RISC-V based systems. This option provides + full perf feature support i.e. counter overflow, privilege mode + filtering, counter configuration. + config ARM_PMU_ACPI depends on ARM_PMU && ACPI def_bool y |