From: Jani Nikula <jani.nikula@linux.intel.com>
To: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>,
intel-gfx@lists.freedesktop.org
Subject: Re: [RFC 1/7] drm/i915: prefer i915_runtime_pm in intel_runtime function
Date: Tue, 21 May 2019 11:45:24 +0300 [thread overview]
Message-ID: <87lfz08acb.fsf@intel.com> (raw)
In-Reply-To: <20190516215634.16675-2-daniele.ceraolospurio@intel.com>
On Thu, 16 May 2019, Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> wrote:
> As a first step towards updating the code to work on the runtime_pm
> structure instead of i915, rework all the internals to use and pass
> around that.
>
> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
> ---
> drivers/gpu/drm/i915/i915_drv.h | 2 +
> drivers/gpu/drm/i915/intel_drv.h | 10 +-
> drivers/gpu/drm/i915/intel_runtime_pm.c | 152 ++++++++++++------------
> 3 files changed, 82 insertions(+), 82 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 5801f5407589..474074c7f395 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -1177,6 +1177,8 @@ struct skl_wm_params {
> */
> struct i915_runtime_pm {
> atomic_t wakeref_count;
> + struct device *kdev;
This could use a small comment to say what device this is.
BR,
Jani.
> + bool available;
> bool suspended;
> bool irqs_enabled;
>
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 30b2d6ed2d53..bd04f394fbd3 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1662,13 +1662,17 @@ ____assert_rpm_wakelock_held(struct i915_runtime_pm *rpm, int wakeref_count)
> }
>
> static inline void
> -assert_rpm_raw_wakeref_held(struct drm_i915_private *i915)
> +__assert_rpm_raw_wakeref_held(struct i915_runtime_pm *rpm)
> {
> - struct i915_runtime_pm *rpm = &i915->runtime_pm;
> -
> ____assert_rpm_raw_wakeref_held(rpm, atomic_read(&rpm->wakeref_count));
> }
>
> +static inline void
> +assert_rpm_raw_wakeref_held(struct drm_i915_private *i915)
> +{
> + __assert_rpm_raw_wakeref_held(&i915->runtime_pm);
> +}
> +
> static inline void
> __assert_rpm_wakelock_held(struct i915_runtime_pm *rpm)
> {
> diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
> index b4abababdf6c..2e21f562df44 100644
> --- a/drivers/gpu/drm/i915/intel_runtime_pm.c
> +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
> @@ -60,19 +60,19 @@
> * present for a given platform.
> */
>
> -static intel_wakeref_t intel_runtime_pm_get_raw(struct drm_i915_private *i915);
> +static intel_wakeref_t intel_runtime_pm_get_raw(struct i915_runtime_pm *rpm);
> static void
> -__intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref,
> +__intel_runtime_pm_put(struct i915_runtime_pm *rpm, intel_wakeref_t wref,
> bool wakelock);
>
> #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
> static void
> -intel_runtime_pm_put_raw(struct drm_i915_private *i915, intel_wakeref_t wref);
> +intel_runtime_pm_put_raw(struct i915_runtime_pm *rpm, intel_wakeref_t wref);
> #else
> -static inline void intel_runtime_pm_put_raw(struct drm_i915_private *i915,
> +static inline void intel_runtime_pm_put_raw(struct i915_runtime_pm *rpm,
> intel_wakeref_t wref)
> {
> - __intel_runtime_pm_put(i915, -1, false);
> + __intel_runtime_pm_put(rpm, -1, false);
> }
> #endif
>
> @@ -112,21 +112,18 @@ static void __print_depot_stack(depot_stack_handle_t stack,
> snprint_stack_trace(buf, sz, &trace, indent);
> }
>
> -static void init_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
> +static void init_intel_runtime_pm_wakeref(struct i915_runtime_pm *rpm)
> {
> - struct i915_runtime_pm *rpm = &i915->runtime_pm;
> -
> spin_lock_init(&rpm->debug.lock);
> }
>
> static noinline depot_stack_handle_t
> -track_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
> +track_intel_runtime_pm_wakeref(struct i915_runtime_pm *rpm)
> {
> - struct i915_runtime_pm *rpm = &i915->runtime_pm;
> depot_stack_handle_t stack, *stacks;
> unsigned long flags;
>
> - if (!HAS_RUNTIME_PM(i915))
> + if (!rpm->available)
> return -1;
>
> stack = __save_depot_stack();
> @@ -153,10 +150,9 @@ track_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
> return stack;
> }
>
> -static void untrack_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
> +static void untrack_intel_runtime_pm_wakeref(struct i915_runtime_pm *rpm,
> depot_stack_handle_t stack)
> {
> - struct i915_runtime_pm *rpm = &i915->runtime_pm;
> unsigned long flags, n;
> bool found = false;
>
> @@ -274,9 +270,8 @@ dump_and_free_wakeref_tracking(struct intel_runtime_pm_debug *debug)
> }
>
> static noinline void
> -__intel_wakeref_dec_and_check_tracking(struct drm_i915_private *i915)
> +__intel_wakeref_dec_and_check_tracking(struct i915_runtime_pm *rpm)
> {
> - struct i915_runtime_pm *rpm = &i915->runtime_pm;
> struct intel_runtime_pm_debug dbg = {};
> unsigned long flags;
>
> @@ -292,9 +287,8 @@ __intel_wakeref_dec_and_check_tracking(struct drm_i915_private *i915)
> }
>
> static noinline void
> -untrack_all_intel_runtime_pm_wakerefs(struct drm_i915_private *i915)
> +untrack_all_intel_runtime_pm_wakerefs(struct i915_runtime_pm *rpm)
> {
> - struct i915_runtime_pm *rpm = &i915->runtime_pm;
> struct intel_runtime_pm_debug dbg = {};
> unsigned long flags;
>
> @@ -345,61 +339,57 @@ void print_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
>
> #else
>
> -static void init_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
> +static void init_intel_runtime_pm_wakeref(struct i915_runtime_pm *rpm)
> {
> }
>
> static depot_stack_handle_t
> -track_intel_runtime_pm_wakeref(struct drm_i915_private *i915)
> +track_intel_runtime_pm_wakeref(struct i915_runtime_pm *rpm)
> {
> return -1;
> }
>
> -static void untrack_intel_runtime_pm_wakeref(struct drm_i915_private *i915,
> +static void untrack_intel_runtime_pm_wakeref(struct i915_runtime_pm *rpm,
> intel_wakeref_t wref)
> {
> }
>
> static void
> -__intel_wakeref_dec_and_check_tracking(struct drm_i915_private *i915)
> +__intel_wakeref_dec_and_check_tracking(struct i915_runtime_pm *rpm)
> {
> - atomic_dec(&i915->runtime_pm.wakeref_count);
> + atomic_dec(&rpm->wakeref_count);
> }
>
> static void
> -untrack_all_intel_runtime_pm_wakerefs(struct drm_i915_private *i915)
> +untrack_all_intel_runtime_pm_wakerefs(struct i915_runtime_pm *rpm)
> {
> }
>
> #endif
>
> static void
> -intel_runtime_pm_acquire(struct drm_i915_private *i915, bool wakelock)
> +intel_runtime_pm_acquire(struct i915_runtime_pm *rpm, bool wakelock)
> {
> - struct i915_runtime_pm *rpm = &i915->runtime_pm;
> -
> if (wakelock) {
> atomic_add(1 + INTEL_RPM_WAKELOCK_BIAS, &rpm->wakeref_count);
> - assert_rpm_wakelock_held(i915);
> + __assert_rpm_wakelock_held(rpm);
> } else {
> atomic_inc(&rpm->wakeref_count);
> - assert_rpm_raw_wakeref_held(i915);
> + __assert_rpm_raw_wakeref_held(rpm);
> }
> }
>
> static void
> -intel_runtime_pm_release(struct drm_i915_private *i915, int wakelock)
> +intel_runtime_pm_release(struct i915_runtime_pm *rpm, int wakelock)
> {
> - struct i915_runtime_pm *rpm = &i915->runtime_pm;
> -
> if (wakelock) {
> - assert_rpm_wakelock_held(i915);
> + __assert_rpm_wakelock_held(rpm);
> atomic_sub(INTEL_RPM_WAKELOCK_BIAS, &rpm->wakeref_count);
> } else {
> - assert_rpm_raw_wakeref_held(i915);
> + __assert_rpm_raw_wakeref_held(rpm);
> }
>
> - __intel_wakeref_dec_and_check_tracking(i915);
> + __intel_wakeref_dec_and_check_tracking(rpm);
> }
>
> bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv,
> @@ -2030,7 +2020,7 @@ intel_display_power_grab_async_put_ref(struct drm_i915_private *dev_priv,
> goto out_verify;
>
> cancel_delayed_work(&power_domains->async_put_work);
> - intel_runtime_pm_put_raw(dev_priv,
> + intel_runtime_pm_put_raw(&dev_priv->runtime_pm,
> fetch_and_zero(&power_domains->async_put_wakeref));
> out_verify:
> verify_async_put_domains_state(power_domains);
> @@ -2219,7 +2209,8 @@ intel_display_power_put_async_work(struct work_struct *work)
> container_of(work, struct drm_i915_private,
> power_domains.async_put_work.work);
> struct i915_power_domains *power_domains = &dev_priv->power_domains;
> - intel_wakeref_t new_work_wakeref = intel_runtime_pm_get_raw(dev_priv);
> + struct i915_runtime_pm *rpm = &dev_priv->runtime_pm;
> + intel_wakeref_t new_work_wakeref = intel_runtime_pm_get_raw(rpm);
> intel_wakeref_t old_work_wakeref = 0;
>
> mutex_lock(&power_domains->lock);
> @@ -2249,9 +2240,9 @@ intel_display_power_put_async_work(struct work_struct *work)
> mutex_unlock(&power_domains->lock);
>
> if (old_work_wakeref)
> - intel_runtime_pm_put_raw(dev_priv, old_work_wakeref);
> + intel_runtime_pm_put_raw(rpm, old_work_wakeref);
> if (new_work_wakeref)
> - intel_runtime_pm_put_raw(dev_priv, new_work_wakeref);
> + intel_runtime_pm_put_raw(rpm, new_work_wakeref);
> }
>
> /**
> @@ -2269,7 +2260,8 @@ void __intel_display_power_put_async(struct drm_i915_private *i915,
> intel_wakeref_t wakeref)
> {
> struct i915_power_domains *power_domains = &i915->power_domains;
> - intel_wakeref_t work_wakeref = intel_runtime_pm_get_raw(i915);
> + struct i915_runtime_pm *rpm = &i915->runtime_pm;
> + intel_wakeref_t work_wakeref = intel_runtime_pm_get_raw(rpm);
>
> mutex_lock(&power_domains->lock);
>
> @@ -2296,7 +2288,7 @@ void __intel_display_power_put_async(struct drm_i915_private *i915,
> mutex_unlock(&power_domains->lock);
>
> if (work_wakeref)
> - intel_runtime_pm_put_raw(i915, work_wakeref);
> + intel_runtime_pm_put_raw(rpm, work_wakeref);
>
> intel_runtime_pm_put(i915, wakeref);
> }
> @@ -2334,7 +2326,7 @@ void intel_display_power_flush_work(struct drm_i915_private *i915)
> mutex_unlock(&power_domains->lock);
>
> if (work_wakeref)
> - intel_runtime_pm_put_raw(i915, work_wakeref);
> + intel_runtime_pm_put_raw(&i915->runtime_pm, work_wakeref);
> }
>
> /**
> @@ -4996,24 +4988,22 @@ static void intel_power_domains_verify_state(struct drm_i915_private *i915)
>
> #endif
>
> -static intel_wakeref_t __intel_runtime_pm_get(struct drm_i915_private *i915,
> +static intel_wakeref_t __intel_runtime_pm_get(struct i915_runtime_pm *rpm,
> bool wakelock)
> {
> - struct pci_dev *pdev = i915->drm.pdev;
> - struct device *kdev = &pdev->dev;
> int ret;
>
> - ret = pm_runtime_get_sync(kdev);
> + ret = pm_runtime_get_sync(rpm->kdev);
> WARN_ONCE(ret < 0, "pm_runtime_get_sync() failed: %d\n", ret);
>
> - intel_runtime_pm_acquire(i915, wakelock);
> + intel_runtime_pm_acquire(rpm, wakelock);
>
> - return track_intel_runtime_pm_wakeref(i915);
> + return track_intel_runtime_pm_wakeref(rpm);
> }
>
> -static intel_wakeref_t intel_runtime_pm_get_raw(struct drm_i915_private *i915)
> +static intel_wakeref_t intel_runtime_pm_get_raw(struct i915_runtime_pm *rpm)
> {
> - return __intel_runtime_pm_get(i915, false);
> + return __intel_runtime_pm_get(rpm, false);
> }
>
> /**
> @@ -5030,7 +5020,7 @@ static intel_wakeref_t intel_runtime_pm_get_raw(struct drm_i915_private *i915)
> */
> intel_wakeref_t intel_runtime_pm_get(struct drm_i915_private *i915)
> {
> - return __intel_runtime_pm_get(i915, true);
> + return __intel_runtime_pm_get(&i915->runtime_pm, true);
> }
>
> /**
> @@ -5049,23 +5039,22 @@ intel_wakeref_t intel_runtime_pm_get(struct drm_i915_private *i915)
> */
> intel_wakeref_t intel_runtime_pm_get_if_in_use(struct drm_i915_private *i915)
> {
> - if (IS_ENABLED(CONFIG_PM)) {
> - struct pci_dev *pdev = i915->drm.pdev;
> - struct device *kdev = &pdev->dev;
> + struct i915_runtime_pm *rpm = &i915->runtime_pm;
>
> + if (IS_ENABLED(CONFIG_PM)) {
> /*
> * In cases runtime PM is disabled by the RPM core and we get
> * an -EINVAL return value we are not supposed to call this
> * function, since the power state is undefined. This applies
> * atm to the late/early system suspend/resume handlers.
> */
> - if (pm_runtime_get_if_in_use(kdev) <= 0)
> + if (pm_runtime_get_if_in_use(rpm->kdev) <= 0)
> return 0;
> }
>
> - intel_runtime_pm_acquire(i915, true);
> + intel_runtime_pm_acquire(rpm, true);
>
> - return track_intel_runtime_pm_wakeref(i915);
> + return track_intel_runtime_pm_wakeref(rpm);
> }
>
> /**
> @@ -5089,27 +5078,25 @@ intel_wakeref_t intel_runtime_pm_get_if_in_use(struct drm_i915_private *i915)
> */
> intel_wakeref_t intel_runtime_pm_get_noresume(struct drm_i915_private *i915)
> {
> - struct pci_dev *pdev = i915->drm.pdev;
> - struct device *kdev = &pdev->dev;
> + struct i915_runtime_pm *rpm = &i915->runtime_pm;
>
> - assert_rpm_wakelock_held(i915);
> - pm_runtime_get_noresume(kdev);
> + __assert_rpm_wakelock_held(rpm);
> + pm_runtime_get_noresume(rpm->kdev);
>
> - intel_runtime_pm_acquire(i915, true);
> + intel_runtime_pm_acquire(rpm, true);
>
> - return track_intel_runtime_pm_wakeref(i915);
> + return track_intel_runtime_pm_wakeref(rpm);
> }
>
> -static void __intel_runtime_pm_put(struct drm_i915_private *i915,
> +static void __intel_runtime_pm_put(struct i915_runtime_pm *rpm,
> intel_wakeref_t wref,
> bool wakelock)
> {
> - struct pci_dev *pdev = i915->drm.pdev;
> - struct device *kdev = &pdev->dev;
> + struct device *kdev = rpm->kdev;
>
> - untrack_intel_runtime_pm_wakeref(i915, wref);
> + untrack_intel_runtime_pm_wakeref(rpm, wref);
>
> - intel_runtime_pm_release(i915, wakelock);
> + intel_runtime_pm_release(rpm, wakelock);
>
> pm_runtime_mark_last_busy(kdev);
> pm_runtime_put_autosuspend(kdev);
> @@ -5117,9 +5104,9 @@ static void __intel_runtime_pm_put(struct drm_i915_private *i915,
>
> #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
> static void
> -intel_runtime_pm_put_raw(struct drm_i915_private *i915, intel_wakeref_t wref)
> +intel_runtime_pm_put_raw(struct i915_runtime_pm *rpm, intel_wakeref_t wref)
> {
> - __intel_runtime_pm_put(i915, wref, false);
> + __intel_runtime_pm_put(rpm, wref, false);
> }
> #endif
>
> @@ -5137,7 +5124,7 @@ intel_runtime_pm_put_raw(struct drm_i915_private *i915, intel_wakeref_t wref)
> */
> void intel_runtime_pm_put_unchecked(struct drm_i915_private *i915)
> {
> - __intel_runtime_pm_put(i915, -1, true);
> + __intel_runtime_pm_put(&i915->runtime_pm, -1, true);
> }
>
> #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
> @@ -5152,7 +5139,7 @@ void intel_runtime_pm_put_unchecked(struct drm_i915_private *i915)
> */
> void intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref)
> {
> - __intel_runtime_pm_put(i915, wref, true);
> + __intel_runtime_pm_put(&i915->runtime_pm, wref, true);
> }
> #endif
>
> @@ -5168,8 +5155,8 @@ void intel_runtime_pm_put(struct drm_i915_private *i915, intel_wakeref_t wref)
> */
> void intel_runtime_pm_enable(struct drm_i915_private *i915)
> {
> - struct pci_dev *pdev = i915->drm.pdev;
> - struct device *kdev = &pdev->dev;
> + struct i915_runtime_pm *rpm = &i915->runtime_pm;
> + struct device *kdev = rpm->kdev;
>
> /*
> * Disable the system suspend direct complete optimization, which can
> @@ -5190,7 +5177,7 @@ void intel_runtime_pm_enable(struct drm_i915_private *i915)
> * so the driver's own RPM reference tracking asserts also work on
> * platforms without RPM support.
> */
> - if (!HAS_RUNTIME_PM(i915)) {
> + if (!rpm->available) {
> int ret;
>
> pm_runtime_dont_use_autosuspend(kdev);
> @@ -5210,8 +5197,8 @@ void intel_runtime_pm_enable(struct drm_i915_private *i915)
>
> void intel_runtime_pm_disable(struct drm_i915_private *i915)
> {
> - struct pci_dev *pdev = i915->drm.pdev;
> - struct device *kdev = &pdev->dev;
> + struct i915_runtime_pm *rpm = &i915->runtime_pm;
> + struct device *kdev = rpm->kdev;
>
> /* Transfer rpm ownership back to core */
> WARN(pm_runtime_get_sync(kdev) < 0,
> @@ -5219,7 +5206,7 @@ void intel_runtime_pm_disable(struct drm_i915_private *i915)
>
> pm_runtime_dont_use_autosuspend(kdev);
>
> - if (!HAS_RUNTIME_PM(i915))
> + if (!rpm->available)
> pm_runtime_put(kdev);
> }
>
> @@ -5233,10 +5220,17 @@ void intel_runtime_pm_cleanup(struct drm_i915_private *i915)
> intel_rpm_raw_wakeref_count(count),
> intel_rpm_wakelock_count(count));
>
> - untrack_all_intel_runtime_pm_wakerefs(i915);
> + untrack_all_intel_runtime_pm_wakerefs(rpm);
> }
>
> void intel_runtime_pm_init_early(struct drm_i915_private *i915)
> {
> - init_intel_runtime_pm_wakeref(i915);
> + struct i915_runtime_pm *rpm = &i915->runtime_pm;
> + struct pci_dev *pdev = i915->drm.pdev;
> + struct device *kdev = &pdev->dev;
> +
> + rpm->kdev = kdev;
> + rpm->available = HAS_RUNTIME_PM(i915);
> +
> + init_intel_runtime_pm_wakeref(rpm);
> }
--
Jani Nikula, Intel Open Source Graphics Center
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
next prev parent reply other threads:[~2019-05-21 8:42 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-16 21:56 [RFC 0/7] Runtime PM encapsulation Daniele Ceraolo Spurio
2019-05-16 21:56 ` [RFC 1/7] drm/i915: prefer i915_runtime_pm in intel_runtime function Daniele Ceraolo Spurio
2019-05-21 8:45 ` Jani Nikula [this message]
2019-05-31 22:59 ` Daniele Ceraolo Spurio
2019-06-03 18:48 ` Jani Nikula
2019-05-16 21:56 ` [RFC 2/7] drm/i915: Remove rpm asserts that use i915 Daniele Ceraolo Spurio
2019-05-16 21:56 ` [RFC 3/7] drm/i915: make enable/disable rpm assert function use the rpm structure Daniele Ceraolo Spurio
2019-05-16 21:56 ` [RFC 4/7] drm/i915: move and rename i915_runtime_pm Daniele Ceraolo Spurio
2019-05-16 22:07 ` Chris Wilson
2019-05-16 22:10 ` Chris Wilson
2019-05-16 22:42 ` Chris Wilson
2019-05-17 15:27 ` Daniele Ceraolo Spurio
2019-05-17 15:31 ` Chris Wilson
2019-05-21 8:27 ` Jani Nikula
2019-05-16 21:56 ` [RFC 5/7] drm/i915: move a few more functions to accept the rpm structure Daniele Ceraolo Spurio
2019-05-16 21:56 ` [RFC 6/7] drm/i915: update rpm_get/put to use " Daniele Ceraolo Spurio
2019-05-16 21:56 ` [RFC 7/7] drm/i915: update with_intel_runtime_pm " Daniele Ceraolo Spurio
2019-05-16 22:25 ` ✗ Fi.CI.CHECKPATCH: warning for Runtime PM encapsulation Patchwork
2019-05-16 22:29 ` ✗ Fi.CI.SPARSE: " Patchwork
2019-05-16 23:28 ` ✗ Fi.CI.BAT: failure " Patchwork
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