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drm/i915: Provide the perf pmu.module

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Rather than manually implement our own module reference counting for perf
pmu events, finally realise that there is a module parameter to struct
pmu for this very purpose.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200716094643.31410-1-chris@chris-wilson.co.uk
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
(cherry picked from commit 27e897beec)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Chris Wilson 2020-07-16 10:46:43 +01:00 committed by Jani Nikula
parent e9e3086b3d
commit df3ab3cb7e
1 changed files with 2 additions and 5 deletions
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7
drivers/gpu/drm/i915/i915_pmu.c
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@ -445,8 +445,6 @@ static void i915_pmu_event_destroy(struct perf_event *event)
container_of(event->pmu, typeof(*i915), pmu.base);
drm_WARN_ON(&i915->drm, event->parent);
module_put(THIS_MODULE);
}
static int
@ -538,10 +536,8 @@ static int i915_pmu_event_init(struct perf_event *event)
if (ret)
return ret;
if (!event->parent) {
__module_get(THIS_MODULE);
if (!event->parent)
event->destroy = i915_pmu_event_destroy;
}
return 0;
}
@ -1130,6 +1126,7 @@ void i915_pmu_register(struct drm_i915_private *i915)
if (!pmu->base.attr_groups)
goto err_attr;
pmu->base.module = THIS_MODULE;
pmu->base.task_ctx_nr = perf_invalid_context;
pmu->base.event_init = i915_pmu_event_init;
pmu->base.add = i915_pmu_event_add;