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authorVadim Shakirov <vadim.shakirov@syntacore.com>2024-02-27 20:00:01 +0300
committerPalmer Dabbelt <palmer@rivosinc.com>2024-02-27 23:55:35 +0300
commit65730fe8f4fb039683d76fa8ea7e8d18a53c6cc6 (patch)
tree015e38ede61a399d6c847e4c3666f24c8e85850b /drivers/perf/riscv_pmu_legacy.c
parent6613476e225e090cc9aad49be7fa504e290dd33d (diff)
downloadlinux-65730fe8f4fb039683d76fa8ea7e8d18a53c6cc6.tar.xz
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/perf/riscv_pmu_legacy.c')
-rw-r--r--drivers/perf/riscv_pmu_legacy.c2
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);
}