On Tue, Apr 21, 2020 at 11:28:24AM +0300, Jani Nikula wrote:
>
> Imre, please check the one question inline.
>
> On Mon, 06 Apr 2020, Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@xxxxxxxxx> wrote:
> > struct drm_device specific drm_WARN* macros include device information
> > in the backtrace, so we know what device the warnings originate from.
> >
> > Prefer drm_WARN* over WARN*.
> >
> > Conversion is done with below semantic patch:
> >
> > @@
> > identifier func, T;
> > @@
> > func(struct intel_runtime_pm *T,...) {
> > + struct drm_i915_private *i915 = container_of(T, struct drm_i915_private, runtime_pm);
> > <+...
> > (
> > -WARN(
> > +drm_WARN(&i915->drm,
> > ...)
> > |
> > -WARN_ON(
> > +drm_WARN_ON(&i915->drm,
> > ...)
> > |
> > -WARN_ONCE(
> > +drm_WARN_ONCE(&i915->drm,
> > ...)
> > |
> > -WARN_ON_ONCE(
> > +drm_WARN_ON_ONCE(&i915->drm,
> > ...)
> > )
> > ...+>
> >
> > }
> >
> > Signed-off-by: Pankaj Bharadiya <pankaj.laxminarayan.bharadiya@xxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/intel_runtime_pm.c | 39 ++++++++++++++++++-------
> > 1 file changed, 28 insertions(+), 11 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
> > index ad719c9602af..31ccd0559c55 100644
> > --- a/drivers/gpu/drm/i915/intel_runtime_pm.c
> > +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
> > @@ -116,6 +116,9 @@ track_intel_runtime_pm_wakeref(struct intel_runtime_pm *rpm)
> > static void untrack_intel_runtime_pm_wakeref(struct intel_runtime_pm *rpm,
> > depot_stack_handle_t stack)
> > {
> > + struct drm_i915_private *i915 = container_of(rpm,
> > + struct drm_i915_private,
> > + runtime_pm);
>
> Is this a dependency we want to add? Should struct intel_runtime_pm be
> allowed to be elsewhere than struct i915?
For convenience a pointer to intel_runtime_pm is stored in intel_uncore
and intel_wakeref, but there is only one instance of it. So looks ok to
me to use container_of() on the pointer.
>
> BR,
> Jani.
>
> > unsigned long flags, n;
> > bool found = false;
> >
> > @@ -134,9 +137,9 @@ static void untrack_intel_runtime_pm_wakeref(struct intel_runtime_pm *rpm,
> > }
> > spin_unlock_irqrestore(&rpm->debug.lock, flags);
> >
> > - if (WARN(!found,
> > - "Unmatched wakeref (tracking %lu), count %u\n",
> > - rpm->debug.count, atomic_read(&rpm->wakeref_count))) {
> > + if (drm_WARN(&i915->drm, !found,
> > + "Unmatched wakeref (tracking %lu), count %u\n",
> > + rpm->debug.count, atomic_read(&rpm->wakeref_count))) {
> > char *buf;
> >
> > buf = kmalloc(PAGE_SIZE, GFP_NOWAIT | __GFP_NOWARN);
> > @@ -355,10 +358,14 @@ intel_runtime_pm_release(struct intel_runtime_pm *rpm, int wakelock)
> > static intel_wakeref_t __intel_runtime_pm_get(struct intel_runtime_pm *rpm,
> > bool wakelock)
> > {
> > + struct drm_i915_private *i915 = container_of(rpm,
> > + struct drm_i915_private,
> > + runtime_pm);
> > int ret;
> >
> > ret = pm_runtime_get_sync(rpm->kdev);
> > - WARN_ONCE(ret < 0, "pm_runtime_get_sync() failed: %d\n", ret);
> > + drm_WARN_ONCE(&i915->drm, ret < 0,
> > + "pm_runtime_get_sync() failed: %d\n", ret);
> >
> > intel_runtime_pm_acquire(rpm, wakelock);
> >
> > @@ -539,6 +546,9 @@ void intel_runtime_pm_put(struct intel_runtime_pm *rpm, intel_wakeref_t wref)
> > */
> > void intel_runtime_pm_enable(struct intel_runtime_pm *rpm)
> > {
> > + struct drm_i915_private *i915 = container_of(rpm,
> > + struct drm_i915_private,
> > + runtime_pm);
> > struct device *kdev = rpm->kdev;
> >
> > /*
> > @@ -565,7 +575,8 @@ void intel_runtime_pm_enable(struct intel_runtime_pm *rpm)
> >
> > pm_runtime_dont_use_autosuspend(kdev);
> > ret = pm_runtime_get_sync(kdev);
> > - WARN(ret < 0, "pm_runtime_get_sync() failed: %d\n", ret);
> > + drm_WARN(&i915->drm, ret < 0,
> > + "pm_runtime_get_sync() failed: %d\n", ret);
> > } else {
> > pm_runtime_use_autosuspend(kdev);
> > }
> > @@ -580,11 +591,14 @@ void intel_runtime_pm_enable(struct intel_runtime_pm *rpm)
> >
> > void intel_runtime_pm_disable(struct intel_runtime_pm *rpm)
> > {
> > + struct drm_i915_private *i915 = container_of(rpm,
> > + struct drm_i915_private,
> > + runtime_pm);
> > struct device *kdev = rpm->kdev;
> >
> > /* Transfer rpm ownership back to core */
> > - WARN(pm_runtime_get_sync(kdev) < 0,
> > - "Failed to pass rpm ownership back to core\n");
> > + drm_WARN(&i915->drm, pm_runtime_get_sync(kdev) < 0,
> > + "Failed to pass rpm ownership back to core\n");
> >
> > pm_runtime_dont_use_autosuspend(kdev);
> >
> > @@ -594,12 +608,15 @@ void intel_runtime_pm_disable(struct intel_runtime_pm *rpm)
> >
> > void intel_runtime_pm_driver_release(struct intel_runtime_pm *rpm)
> > {
> > + struct drm_i915_private *i915 = container_of(rpm,
> > + struct drm_i915_private,
> > + runtime_pm);
> > int count = atomic_read(&rpm->wakeref_count);
> >
> > - WARN(count,
> > - "i915 raw-wakerefs=%d wakelocks=%d on cleanup\n",
> > - intel_rpm_raw_wakeref_count(count),
> > - intel_rpm_wakelock_count(count));
> > + drm_WARN(&i915->drm, count,
> > + "i915 raw-wakerefs=%d wakelocks=%d on cleanup\n",
> > + intel_rpm_raw_wakeref_count(count),
> > + intel_rpm_wakelock_count(count));
> >
> > untrack_all_intel_runtime_pm_wakerefs(rpm);
> > }
>
> --
> Jani Nikula, Intel Open Source Graphics Center
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