diff options
| author | Sergey Matyukevich <sergey.matyukevich@syntacore.com> | 2022-08-30 18:53:05 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-09-08 23:34:50 +0300 |
| commit | 1537bf26e212ffcf007d0590958025f6bfdd4ac8 (patch) | |
| tree | b2a498f8d14239173d11ee1a97a7911b356504e9 /include/linux/perf | |
| parent | 82c75dca6f95c9ac4649031a493456156ddfec2f (diff) | |
| download | linux-1537bf26e212ffcf007d0590958025f6bfdd4ac8.tar.xz | |
perf: RISC-V: exclude invalid pmu counters from SBI calls
SBI firmware may not provide information for some counters in response
to SBI_EXT_PMU_COUNTER_GET_INFO call. Exclude such counters from the
subsequent SBI requests. For this purpose use global mask to keep track
of fully specified counters.
Signed-off-by: Sergey Matyukevich <sergey.matyukevich@syntacore.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20220830155306.301714-3-geomatsi@gmail.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'include/linux/perf')
| -rw-r--r-- | include/linux/perf/riscv_pmu.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/perf/riscv_pmu.h b/include/linux/perf/riscv_pmu.h index bf66fe011fa8..e17e86ad6f3a 100644 --- a/include/linux/perf/riscv_pmu.h +++ b/include/linux/perf/riscv_pmu.h @@ -45,7 +45,7 @@ struct riscv_pmu { irqreturn_t (*handle_irq)(int irq_num, void *dev); - int num_counters; + unsigned long cmask; u64 (*ctr_read)(struct perf_event *event); int (*ctr_get_idx)(struct perf_event *event); int (*ctr_get_width)(int idx); |