| Message ID | 20240227170002.188671-2-vadim.shakirov@syntacore.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drivers: perf: fix crash with the legacy riscv driver | expand |
On 27/02/2024 18:00, Vadim Shakirov wrote: > 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> > --- > drivers/perf/riscv_pmu_legacy.c | 2 ++ > 1 file changed, 2 insertions(+) > > 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); > } I see here that Atish added its RB: https://lore.kernel.org/linux-riscv/CAOnJCUJ-eE+zbXH0yBX_QBK2ep779q=wNCSrc+BJfzUb+zBCaw@mail.gmail.com/ So I add it here (hopefully b4 won't complain, I don't know): Reviewed-by: Atish Patra <atishp@rivosinc.com> And I'd say the fixes tag for this one is: Fixes: 9b3e150e310e ("RISC-V: Add a simple platform driver for RISC-V legacy perf") Thanks, Alex
On 27/02/2024 20:26, Alexandre Ghiti wrote: > On 27/02/2024 18:00, Vadim Shakirov wrote: >> 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> >> --- >> drivers/perf/riscv_pmu_legacy.c | 2 ++ >> 1 file changed, 2 insertions(+) >> >> 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); >> } > > > I see here that Atish added its RB: > https://lore.kernel.org/linux-riscv/CAOnJCUJ-eE+zbXH0yBX_QBK2ep779q=wNCSrc+BJfzUb+zBCaw@mail.gmail.com/ > > So I add it here (hopefully b4 won't complain, I don't know): FTR, b4 indeed complains: NOTE: some trailers ignored due to from/email mismatches: ! Trailer: Reviewed-by: Atish Patra <atishp@rivosinc.com> Msg From: Alexandre Ghiti <alex@ghiti.fr> > > Reviewed-by: Atish Patra <atishp@rivosinc.com> > > And I'd say the fixes tag for this one is: > > Fixes: 9b3e150e310e ("RISC-V: Add a simple platform driver for RISC-V > legacy perf") > > Thanks, > > Alex > > > _______________________________________________ > linux-riscv mailing list > linux-riscv@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-riscv
On Tue, 27 Feb 2024 11:26:20 PST (-0800), alex@ghiti.fr wrote: > On 27/02/2024 18:00, Vadim Shakirov wrote: >> 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> >> --- >> drivers/perf/riscv_pmu_legacy.c | 2 ++ >> 1 file changed, 2 insertions(+) >> >> 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); >> } > > > I see here that Atish added its RB: > https://lore.kernel.org/linux-riscv/CAOnJCUJ-eE+zbXH0yBX_QBK2ep779q=wNCSrc+BJfzUb+zBCaw@mail.gmail.com/ > > So I add it here (hopefully b4 won't complain, I don't know): > > Reviewed-by: Atish Patra <atishp@rivosinc.com> It says NOTE: some trailers ignored due to from/email mismatches: ! Trailer: Reviewed-by: Atish Patra <atishp@rivosinc.com> Msg From: Alexandre Ghiti <alex@ghiti.fr> NOTE: Rerun with -S to apply them anyway Should show up on fixes in a bit, assuming it gets through the testing. > > And I'd say the fixes tag for this one is: > > Fixes: 9b3e150e310e ("RISC-V: Add a simple platform driver for RISC-V > legacy perf") > > Thanks, > > Alex
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); }
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> --- drivers/perf/riscv_pmu_legacy.c | 2 ++ 1 file changed, 2 insertions(+)