Messages in this thread Patch in this message | | | From | Alexandre Ghiti <> | Subject | [PATCH 3/4] riscv: Make legacy counter enum match the HW numbering | Date | Thu, 13 Apr 2023 18:17:24 +0200 |
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RISCV_PMU_LEGACY_INSTRET used to be set to 1 whereas the offset of this hardware counter from CSR_CYCLE is actually 2: make this offset match the real hw offset so that we can directly expose those values to userspace.
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> --- drivers/perf/riscv_pmu_legacy.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/perf/riscv_pmu_legacy.c b/drivers/perf/riscv_pmu_legacy.c index ca9e20bfc7ac..0d8c9d8849ee 100644 --- a/drivers/perf/riscv_pmu_legacy.c +++ b/drivers/perf/riscv_pmu_legacy.c @@ -12,8 +12,11 @@ #include <linux/perf/riscv_pmu.h> #include <linux/platform_device.h> -#define RISCV_PMU_LEGACY_CYCLE 0 -#define RISCV_PMU_LEGACY_INSTRET 1 +enum { + RISCV_PMU_LEGACY_CYCLE, + RISCV_PMU_LEGACY_TIME, + RISCV_PMU_LEGACY_INSTRET +}; static bool pmu_init_done; -- 2.37.2
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