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drm/xe/pmu: Extract xe_pmu_event_update()

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Like other pmu drivers, keep the update separate from the read so it can
be called from other methods (like stop()) without side effects.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250124050411.2189060-3-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
This commit is contained in:
Lucas De Marchi
2025-01-23 21:04:08 -08:00
parent 257a10c18e
commit ef7ce39386
1 changed files with 15 additions and 9 deletions
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24
drivers/gpu/drm/xe/xe_pmu.c
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@@ -117,18 +117,11 @@ static u64 __xe_pmu_event_read(struct perf_event *event)
return val;
}
static void xe_pmu_event_read(struct perf_event *event)
static void xe_pmu_event_update(struct perf_event *event)
{
struct xe_device *xe = container_of(event->pmu, typeof(*xe), pmu.base);
struct hw_perf_event *hwc = &event->hw;
struct xe_pmu *pmu = &xe->pmu;
u64 prev, new;
if (!pmu->registered) {
event->hw.state = PERF_HES_STOPPED;
return;
}
prev = local64_read(&hwc->prev_count);
do {
new = __xe_pmu_event_read(event);
@@ -137,6 +130,19 @@ static void xe_pmu_event_read(struct perf_event *event)
local64_add(new - prev, &event->count);
}
static void xe_pmu_event_read(struct perf_event *event)
{
struct xe_device *xe = container_of(event->pmu, typeof(*xe), pmu.base);
struct xe_pmu *pmu = &xe->pmu;
if (!pmu->registered) {
event->hw.state = PERF_HES_STOPPED;
return;
}
xe_pmu_event_update(event);
}
static void xe_pmu_enable(struct perf_event *event)
{
/*
@@ -166,7 +172,7 @@ static void xe_pmu_event_stop(struct perf_event *event, int flags)
if (pmu->registered)
if (flags & PERF_EF_UPDATE)
xe_pmu_event_read(event);
xe_pmu_event_update(event);
event->hw.state = PERF_HES_STOPPED;
}