| Message ID | 1544114849-47266-10-git-send-email-andrew.murray@arm.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | perf/core: Generalise event exclusion checking | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | success | next/apply_patch Successfully applied |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 81 lines checked |
Andrew Murray <andrew.murray@arm.com> writes: > For PowerPC PMUs that do not support context exclusion let's > advertise the PERF_PMU_CAP_NO_EXCLUDE capability. This ensures that > perf will prevent us from handling events where any exclusion flags > are set. Let's also remove the now unnecessary check for exclusion > flags. > > Signed-off-by: Andrew Murray <andrew.murray@arm.com> > --- > arch/powerpc/perf/hv-24x7.c | 10 +--------- > arch/powerpc/perf/hv-gpci.c | 10 +--------- > arch/powerpc/perf/imc-pmu.c | 19 +------------------ > 3 files changed, 3 insertions(+), 36 deletions(-) Looks good. Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) cheers > diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c > index 72238ee..d2b8e60 100644 > --- a/arch/powerpc/perf/hv-24x7.c > +++ b/arch/powerpc/perf/hv-24x7.c > @@ -1306,15 +1306,6 @@ static int h_24x7_event_init(struct perf_event *event) > return -EINVAL; > } > > - /* unsupported modes and filters */ > - if (event->attr.exclude_user || > - event->attr.exclude_kernel || > - event->attr.exclude_hv || > - event->attr.exclude_idle || > - event->attr.exclude_host || > - event->attr.exclude_guest) > - return -EINVAL; > - > /* no branch sampling */ > if (has_branch_stack(event)) > return -EOPNOTSUPP; > @@ -1577,6 +1568,7 @@ static struct pmu h_24x7_pmu = { > .start_txn = h_24x7_event_start_txn, > .commit_txn = h_24x7_event_commit_txn, > .cancel_txn = h_24x7_event_cancel_txn, > + .capabilities = PERF_PMU_CAP_NO_EXCLUDE, > }; > > static int hv_24x7_init(void) > diff --git a/arch/powerpc/perf/hv-gpci.c b/arch/powerpc/perf/hv-gpci.c > index 43fabb3..735e77b 100644 > --- a/arch/powerpc/perf/hv-gpci.c > +++ b/arch/powerpc/perf/hv-gpci.c > @@ -232,15 +232,6 @@ static int h_gpci_event_init(struct perf_event *event) > return -EINVAL; > } > > - /* unsupported modes and filters */ > - if (event->attr.exclude_user || > - event->attr.exclude_kernel || > - event->attr.exclude_hv || > - event->attr.exclude_idle || > - event->attr.exclude_host || > - event->attr.exclude_guest) > - return -EINVAL; > - > /* no branch sampling */ > if (has_branch_stack(event)) > return -EOPNOTSUPP; > @@ -285,6 +276,7 @@ static struct pmu h_gpci_pmu = { > .start = h_gpci_event_start, > .stop = h_gpci_event_stop, > .read = h_gpci_event_update, > + .capabilities = PERF_PMU_CAP_NO_EXCLUDE, > }; > > static int hv_gpci_init(void) > diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c > index 1fafc32b..1dbb0ee 100644 > --- a/arch/powerpc/perf/imc-pmu.c > +++ b/arch/powerpc/perf/imc-pmu.c > @@ -473,15 +473,6 @@ static int nest_imc_event_init(struct perf_event *event) > if (event->hw.sample_period) > return -EINVAL; > > - /* unsupported modes and filters */ > - if (event->attr.exclude_user || > - event->attr.exclude_kernel || > - event->attr.exclude_hv || > - event->attr.exclude_idle || > - event->attr.exclude_host || > - event->attr.exclude_guest) > - return -EINVAL; > - > if (event->cpu < 0) > return -EINVAL; > > @@ -748,15 +739,6 @@ static int core_imc_event_init(struct perf_event *event) > if (event->hw.sample_period) > return -EINVAL; > > - /* unsupported modes and filters */ > - if (event->attr.exclude_user || > - event->attr.exclude_kernel || > - event->attr.exclude_hv || > - event->attr.exclude_idle || > - event->attr.exclude_host || > - event->attr.exclude_guest) > - return -EINVAL; > - > if (event->cpu < 0) > return -EINVAL; > > @@ -1069,6 +1051,7 @@ static int update_pmu_ops(struct imc_pmu *pmu) > pmu->pmu.stop = imc_event_stop; > pmu->pmu.read = imc_event_update; > pmu->pmu.attr_groups = pmu->attr_groups; > + pmu->pmu.capabilities = PERF_PMU_CAP_NO_EXCLUDE; > pmu->attr_groups[IMC_FORMAT_ATTR] = &imc_format_group; > > switch (pmu->domain) { > -- > 2.7.4
On 06/12/18 10:17 PM, Andrew Murray wrote: > For PowerPC PMUs that do not support context exclusion let's > advertise the PERF_PMU_CAP_NO_EXCLUDE capability. This ensures that > perf will prevent us from handling events where any exclusion flags > are set. Let's also remove the now unnecessary check for exclusion > flags. Reviewed-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> > > Signed-off-by: Andrew Murray <andrew.murray@arm.com> > --- > arch/powerpc/perf/hv-24x7.c | 10 +--------- > arch/powerpc/perf/hv-gpci.c | 10 +--------- > arch/powerpc/perf/imc-pmu.c | 19 +------------------ > 3 files changed, 3 insertions(+), 36 deletions(-) > > diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c > index 72238ee..d2b8e60 100644 > --- a/arch/powerpc/perf/hv-24x7.c > +++ b/arch/powerpc/perf/hv-24x7.c > @@ -1306,15 +1306,6 @@ static int h_24x7_event_init(struct perf_event *event) > return -EINVAL; > } > > - /* unsupported modes and filters */ > - if (event->attr.exclude_user || > - event->attr.exclude_kernel || > - event->attr.exclude_hv || > - event->attr.exclude_idle || > - event->attr.exclude_host || > - event->attr.exclude_guest) > - return -EINVAL; > - > /* no branch sampling */ > if (has_branch_stack(event)) > return -EOPNOTSUPP; > @@ -1577,6 +1568,7 @@ static struct pmu h_24x7_pmu = { > .start_txn = h_24x7_event_start_txn, > .commit_txn = h_24x7_event_commit_txn, > .cancel_txn = h_24x7_event_cancel_txn, > + .capabilities = PERF_PMU_CAP_NO_EXCLUDE, > }; > > static int hv_24x7_init(void) > diff --git a/arch/powerpc/perf/hv-gpci.c b/arch/powerpc/perf/hv-gpci.c > index 43fabb3..735e77b 100644 > --- a/arch/powerpc/perf/hv-gpci.c > +++ b/arch/powerpc/perf/hv-gpci.c > @@ -232,15 +232,6 @@ static int h_gpci_event_init(struct perf_event *event) > return -EINVAL; > } > > - /* unsupported modes and filters */ > - if (event->attr.exclude_user || > - event->attr.exclude_kernel || > - event->attr.exclude_hv || > - event->attr.exclude_idle || > - event->attr.exclude_host || > - event->attr.exclude_guest) > - return -EINVAL; > - > /* no branch sampling */ > if (has_branch_stack(event)) > return -EOPNOTSUPP; > @@ -285,6 +276,7 @@ static struct pmu h_gpci_pmu = { > .start = h_gpci_event_start, > .stop = h_gpci_event_stop, > .read = h_gpci_event_update, > + .capabilities = PERF_PMU_CAP_NO_EXCLUDE, > }; > > static int hv_gpci_init(void) > diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c > index 1fafc32b..1dbb0ee 100644 > --- a/arch/powerpc/perf/imc-pmu.c > +++ b/arch/powerpc/perf/imc-pmu.c > @@ -473,15 +473,6 @@ static int nest_imc_event_init(struct perf_event *event) > if (event->hw.sample_period) > return -EINVAL; > > - /* unsupported modes and filters */ > - if (event->attr.exclude_user || > - event->attr.exclude_kernel || > - event->attr.exclude_hv || > - event->attr.exclude_idle || > - event->attr.exclude_host || > - event->attr.exclude_guest) > - return -EINVAL; > - > if (event->cpu < 0) > return -EINVAL; > > @@ -748,15 +739,6 @@ static int core_imc_event_init(struct perf_event *event) > if (event->hw.sample_period) > return -EINVAL; > > - /* unsupported modes and filters */ > - if (event->attr.exclude_user || > - event->attr.exclude_kernel || > - event->attr.exclude_hv || > - event->attr.exclude_idle || > - event->attr.exclude_host || > - event->attr.exclude_guest) > - return -EINVAL; > - > if (event->cpu < 0) > return -EINVAL; > > @@ -1069,6 +1051,7 @@ static int update_pmu_ops(struct imc_pmu *pmu) > pmu->pmu.stop = imc_event_stop; > pmu->pmu.read = imc_event_update; > pmu->pmu.attr_groups = pmu->attr_groups; > + pmu->pmu.capabilities = PERF_PMU_CAP_NO_EXCLUDE; > pmu->attr_groups[IMC_FORMAT_ATTR] = &imc_format_group; > > switch (pmu->domain) {
diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c index 72238ee..d2b8e60 100644 --- a/arch/powerpc/perf/hv-24x7.c +++ b/arch/powerpc/perf/hv-24x7.c @@ -1306,15 +1306,6 @@ static int h_24x7_event_init(struct perf_event *event) return -EINVAL; } - /* unsupported modes and filters */ - if (event->attr.exclude_user || - event->attr.exclude_kernel || - event->attr.exclude_hv || - event->attr.exclude_idle || - event->attr.exclude_host || - event->attr.exclude_guest) - return -EINVAL; - /* no branch sampling */ if (has_branch_stack(event)) return -EOPNOTSUPP; @@ -1577,6 +1568,7 @@ static struct pmu h_24x7_pmu = { .start_txn = h_24x7_event_start_txn, .commit_txn = h_24x7_event_commit_txn, .cancel_txn = h_24x7_event_cancel_txn, + .capabilities = PERF_PMU_CAP_NO_EXCLUDE, }; static int hv_24x7_init(void) diff --git a/arch/powerpc/perf/hv-gpci.c b/arch/powerpc/perf/hv-gpci.c index 43fabb3..735e77b 100644 --- a/arch/powerpc/perf/hv-gpci.c +++ b/arch/powerpc/perf/hv-gpci.c @@ -232,15 +232,6 @@ static int h_gpci_event_init(struct perf_event *event) return -EINVAL; } - /* unsupported modes and filters */ - if (event->attr.exclude_user || - event->attr.exclude_kernel || - event->attr.exclude_hv || - event->attr.exclude_idle || - event->attr.exclude_host || - event->attr.exclude_guest) - return -EINVAL; - /* no branch sampling */ if (has_branch_stack(event)) return -EOPNOTSUPP; @@ -285,6 +276,7 @@ static struct pmu h_gpci_pmu = { .start = h_gpci_event_start, .stop = h_gpci_event_stop, .read = h_gpci_event_update, + .capabilities = PERF_PMU_CAP_NO_EXCLUDE, }; static int hv_gpci_init(void) diff --git a/arch/powerpc/perf/imc-pmu.c b/arch/powerpc/perf/imc-pmu.c index 1fafc32b..1dbb0ee 100644 --- a/arch/powerpc/perf/imc-pmu.c +++ b/arch/powerpc/perf/imc-pmu.c @@ -473,15 +473,6 @@ static int nest_imc_event_init(struct perf_event *event) if (event->hw.sample_period) return -EINVAL; - /* unsupported modes and filters */ - if (event->attr.exclude_user || - event->attr.exclude_kernel || - event->attr.exclude_hv || - event->attr.exclude_idle || - event->attr.exclude_host || - event->attr.exclude_guest) - return -EINVAL; - if (event->cpu < 0) return -EINVAL; @@ -748,15 +739,6 @@ static int core_imc_event_init(struct perf_event *event) if (event->hw.sample_period) return -EINVAL; - /* unsupported modes and filters */ - if (event->attr.exclude_user || - event->attr.exclude_kernel || - event->attr.exclude_hv || - event->attr.exclude_idle || - event->attr.exclude_host || - event->attr.exclude_guest) - return -EINVAL; - if (event->cpu < 0) return -EINVAL; @@ -1069,6 +1051,7 @@ static int update_pmu_ops(struct imc_pmu *pmu) pmu->pmu.stop = imc_event_stop; pmu->pmu.read = imc_event_update; pmu->pmu.attr_groups = pmu->attr_groups; + pmu->pmu.capabilities = PERF_PMU_CAP_NO_EXCLUDE; pmu->attr_groups[IMC_FORMAT_ATTR] = &imc_format_group; switch (pmu->domain) {
For PowerPC PMUs that do not support context exclusion let's advertise the PERF_PMU_CAP_NO_EXCLUDE capability. This ensures that perf will prevent us from handling events where any exclusion flags are set. Let's also remove the now unnecessary check for exclusion flags. Signed-off-by: Andrew Murray <andrew.murray@arm.com> --- arch/powerpc/perf/hv-24x7.c | 10 +--------- arch/powerpc/perf/hv-gpci.c | 10 +--------- arch/powerpc/perf/imc-pmu.c | 19 +------------------ 3 files changed, 3 insertions(+), 36 deletions(-)