riscv: Make legacy counter enum match the HW numbering

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>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>

diff --git a/drivers/perf/riscv_pmu_legacy.c b/drivers/perf/riscv_pmu_legacy.c
index ca9e20b..6a000ab 100644 (file)
--- a/drivers/perf/riscv_pmu_legacy.c
+++ b/drivers/perf/riscv_pmu_legacy.c
@@ -13,7 +13,7 @@
 #include <linux/platform_device.h>
 
 #define RISCV_PMU_LEGACY_CYCLE         0
-#define RISCV_PMU_LEGACY_INSTRET       1
+#define RISCV_PMU_LEGACY_INSTRET       2
 
 static bool pmu_init_done;