[PATCH 2/4] perf: arm_cspmu: Support implementation specific filters
From: Ilkka Koskinen <hidden>
Date: 2023-06-22 01:12:44
Also in:
lkml
Subsystem:
arm pmu profiling and debugging, the rest · Maintainers:
Will Deacon, Mark Rutland, Linus Torvalds
Generic filters aren't used in all the platforms. Instead, the platforms may use different means to filter events. Add support for implementation specific filters. Reviewed-by: Besar Wicaksono <redacted> Signed-off-by: Ilkka Koskinen <redacted> --- drivers/perf/arm_cspmu/arm_cspmu.c | 8 ++++++-- drivers/perf/arm_cspmu/arm_cspmu.h | 3 +++ 2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/arm_cspmu.c
index 0f517152cb4e..fafd734c3218 100644
--- a/drivers/perf/arm_cspmu/arm_cspmu.c
+++ b/drivers/perf/arm_cspmu/arm_cspmu.c@@ -117,6 +117,9 @@ static unsigned long arm_cspmu_cpuhp_state; +static void arm_cspmu_set_ev_filter(struct arm_cspmu *cspmu, + struct hw_perf_event *hwc, u32 filter); + static struct acpi_apmt_node *arm_cspmu_apmt_node(struct device *dev) { return *(struct acpi_apmt_node **)dev_get_platdata(dev);
@@ -426,6 +429,7 @@ static int arm_cspmu_init_impl_ops(struct arm_cspmu *cspmu) CHECK_DEFAULT_IMPL_OPS(impl_ops, event_type); CHECK_DEFAULT_IMPL_OPS(impl_ops, event_filter); CHECK_DEFAULT_IMPL_OPS(impl_ops, event_attr_is_visible); + CHECK_DEFAULT_IMPL_OPS(impl_ops, set_ev_filter); return 0; }
@@ -792,7 +796,7 @@ static inline void arm_cspmu_set_event(struct arm_cspmu *cspmu, writel(hwc->config, cspmu->base0 + offset); } -static inline void arm_cspmu_set_ev_filter(struct arm_cspmu *cspmu, +static void arm_cspmu_set_ev_filter(struct arm_cspmu *cspmu, struct hw_perf_event *hwc, u32 filter) {
@@ -826,7 +830,7 @@ static void arm_cspmu_start(struct perf_event *event, int pmu_flags) arm_cspmu_set_cc_filter(cspmu, filter); } else { arm_cspmu_set_event(cspmu, hwc); - arm_cspmu_set_ev_filter(cspmu, hwc, filter); + cspmu->impl.ops.set_ev_filter(cspmu, hwc, filter); } hwc->state = 0;
diff --git a/drivers/perf/arm_cspmu/arm_cspmu.h b/drivers/perf/arm_cspmu/arm_cspmu.h
index 83df53d1c132..d6d88c246a23 100644
--- a/drivers/perf/arm_cspmu/arm_cspmu.h
+++ b/drivers/perf/arm_cspmu/arm_cspmu.h@@ -101,6 +101,9 @@ struct arm_cspmu_impl_ops { u32 (*event_type)(const struct perf_event *event); /* Decode filter value from configs */ u32 (*event_filter)(const struct perf_event *event); + /* Set event filter */ + void (*set_ev_filter)(struct arm_cspmu *cspmu, + struct hw_perf_event *hwc, u32 filter); /* Hide/show unsupported events */ umode_t (*event_attr_is_visible)(struct kobject *kobj, struct attribute *attr, int unused);
--
2.40.1
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