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| author | Vadim Shakirov <vadim.shakirov@syntacore.com> | 2024-02-27 20:00:01 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-02-27 12:55:35 -0800 |
| commit | 65730fe8f4fb039683d76fa8ea7e8d18a53c6cc6 (patch) | |
| tree | 015e38ede61a399d6c847e4c3666f24c8e85850b /drivers | |
| parent | 6613476e225e090cc9aad49be7fa504e290dd33d (diff) | |
| download | linux-stable-65730fe8f4fb039683d76fa8ea7e8d18a53c6cc6.tar.gz linux-stable-65730fe8f4fb039683d76fa8ea7e8d18a53c6cc6.tar.bz2 linux-stable-65730fe8f4fb039683d76fa8ea7e8d18a53c6cc6.zip | |
drivers: perf: added capabilities for legacy PMU
Added the PERF_PMU_CAP_NO_INTERRUPT flag because the legacy pmu driver
does not provide sampling capabilities
Added the PERF_PMU_CAP_NO_EXCLUDE flag because the legacy pmu driver
does not provide the ability to disable counter incrementation in
different privilege modes
Suggested-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Vadim Shakirov <vadim.shakirov@syntacore.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Fixes: 9b3e150e310e ("RISC-V: Add a simple platform driver for RISC-V legacy perf")
Link: https://lore.kernel.org/r/20240227170002.188671-2-vadim.shakirov@syntacore.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/perf/riscv_pmu_legacy.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/perf/riscv_pmu_legacy.c b/drivers/perf/riscv_pmu_legacy.c index 79fdd667922e..a85fc9a15f03 100644 --- a/drivers/perf/riscv_pmu_legacy.c +++ b/drivers/perf/riscv_pmu_legacy.c @@ -117,6 +117,8 @@ static void pmu_legacy_init(struct riscv_pmu *pmu) pmu->event_mapped = pmu_legacy_event_mapped; pmu->event_unmapped = pmu_legacy_event_unmapped; pmu->csr_index = pmu_legacy_csr_index; + pmu->pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT; + pmu->pmu.capabilities |= PERF_PMU_CAP_NO_EXCLUDE; perf_pmu_register(&pmu->pmu, "cpu", PERF_TYPE_RAW); } |