diff mbox series

[3/4] riscv: Make legacy counter enum match the HW numbering

Message ID 20230413161725.195417-4-alexghiti@rivosinc.com (mailing list archive)
State New, archived
Headers show
Series riscv: Allow userspace to directly access perf counters | expand

Commit Message

Alexandre Ghiti April 13, 2023, 4:17 p.m. UTC 
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 mbox series

Patch

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;