drm/i915: Remove superfluous powersave work flushing

Instead of flushing the outstanding enabling, remember the requested
frequency to apply when the powersave work runs.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1468397438-21226-6-git-send-email-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index d1ff4cb..90aef45 100644 (file)
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1205,8 +1205,6 @@ static int i915_frequency_info(struct seq_file *m, void *unused)
 
        intel_runtime_pm_get(dev_priv);
 
-       flush_delayed_work(&dev_priv->rps.delayed_resume_work);
-
        if (IS_GEN5(dev)) {
                u16 rgvswctl = I915_READ16(MEMSWCTL);
                u16 rgvstat = I915_READ16(MEMSTAT_ILK);
@@ -1898,8 +1896,6 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
 
        intel_runtime_pm_get(dev_priv);
 
-       flush_delayed_work(&dev_priv->rps.delayed_resume_work);
-
        ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
        if (ret)
                goto out;
@@ -4952,20 +4948,11 @@ i915_max_freq_get(void *data, u64 *val)
 {
        struct drm_device *dev = data;
        struct drm_i915_private *dev_priv = to_i915(dev);
-       int ret;
 
        if (INTEL_INFO(dev)->gen < 6)
                return -ENODEV;
 
-       flush_delayed_work(&dev_priv->rps.delayed_resume_work);
-
-       ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
-       if (ret)
-               return ret;
-
        *val = intel_gpu_freq(dev_priv, dev_priv->rps.max_freq_softlimit);
-       mutex_unlock(&dev_priv->rps.hw_lock);
-
        return 0;
 }
 
@@ -4980,8 +4967,6 @@ i915_max_freq_set(void *data, u64 val)
        if (INTEL_INFO(dev)->gen < 6)
                return -ENODEV;
 
-       flush_delayed_work(&dev_priv->rps.delayed_resume_work);
-
        DRM_DEBUG_DRIVER("Manually setting max freq to %llu\n", val);
 
        ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
@@ -5019,20 +5004,11 @@ i915_min_freq_get(void *data, u64 *val)
 {
        struct drm_device *dev = data;
        struct drm_i915_private *dev_priv = to_i915(dev);
-       int ret;
 
-       if (INTEL_INFO(dev)->gen < 6)
+       if (INTEL_GEN(dev_priv) < 6)
                return -ENODEV;
 
-       flush_delayed_work(&dev_priv->rps.delayed_resume_work);
-
-       ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
-       if (ret)
-               return ret;
-
        *val = intel_gpu_freq(dev_priv, dev_priv->rps.min_freq_softlimit);
-       mutex_unlock(&dev_priv->rps.hw_lock);
-
        return 0;
 }
 
@@ -5044,11 +5020,9 @@ i915_min_freq_set(void *data, u64 val)
        u32 hw_max, hw_min;
        int ret;
 
-       if (INTEL_INFO(dev)->gen < 6)
+       if (INTEL_GEN(dev_priv) < 6)
                return -ENODEV;
 
-       flush_delayed_work(&dev_priv->rps.delayed_resume_work);
-
        DRM_DEBUG_DRIVER("Manually setting min freq to %llu\n", val);
 
        ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);

diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c
index 8c045ff..d47281b 100644 (file)
--- a/drivers/gpu/drm/i915/i915_sysfs.c
+++ b/drivers/gpu/drm/i915/i915_sysfs.c
@@ -271,8 +271,6 @@ static ssize_t gt_act_freq_mhz_show(struct device *kdev,
        struct drm_i915_private *dev_priv = to_i915(dev);
        int ret;
 
-       flush_delayed_work(&dev_priv->rps.delayed_resume_work);
-
        intel_runtime_pm_get(dev_priv);
 
        mutex_lock(&dev_priv->rps.hw_lock);
@@ -303,19 +301,10 @@ static ssize_t gt_cur_freq_mhz_show(struct device *kdev,
        struct drm_minor *minor = dev_to_drm_minor(kdev);
        struct drm_device *dev = minor->dev;
        struct drm_i915_private *dev_priv = to_i915(dev);
-       int ret;
-
-       flush_delayed_work(&dev_priv->rps.delayed_resume_work);
-
-       intel_runtime_pm_get(dev_priv);
-
-       mutex_lock(&dev_priv->rps.hw_lock);
-       ret = intel_gpu_freq(dev_priv, dev_priv->rps.cur_freq);
-       mutex_unlock(&dev_priv->rps.hw_lock);
 
-       intel_runtime_pm_put(dev_priv);
-
-       return snprintf(buf, PAGE_SIZE, "%d\n", ret);
+       return snprintf(buf, PAGE_SIZE, "%d\n",
+                       intel_gpu_freq(dev_priv,
+                                      dev_priv->rps.cur_freq));
 }
 
 static ssize_t gt_boost_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf)
@@ -324,7 +313,8 @@ static ssize_t gt_boost_freq_mhz_show(struct device *kdev, struct device_attribu
        struct drm_i915_private *dev_priv = to_i915(minor->dev);
 
        return snprintf(buf, PAGE_SIZE, "%d\n",
-                       intel_gpu_freq(dev_priv, dev_priv->rps.boost_freq));
+                       intel_gpu_freq(dev_priv,
+                                      dev_priv->rps.boost_freq));
 }
 
 static ssize_t gt_boost_freq_mhz_store(struct device *kdev,
@@ -360,9 +350,9 @@ static ssize_t vlv_rpe_freq_mhz_show(struct device *kdev,
        struct drm_device *dev = minor->dev;
        struct drm_i915_private *dev_priv = to_i915(dev);
 
-       return snprintf(buf, PAGE_SIZE,
-                       "%d\n",
-                       intel_gpu_freq(dev_priv, dev_priv->rps.efficient_freq));
+       return snprintf(buf, PAGE_SIZE, "%d\n",
+                       intel_gpu_freq(dev_priv,
+                                      dev_priv->rps.efficient_freq));
 }
 
 static ssize_t gt_max_freq_mhz_show(struct device *kdev, struct device_attribute *attr, char *buf)
@@ -370,15 +360,10 @@ static ssize_t gt_max_freq_mhz_show(struct device *kdev, struct device_attribute
        struct drm_minor *minor = dev_to_drm_minor(kdev);
        struct drm_device *dev = minor->dev;
        struct drm_i915_private *dev_priv = to_i915(dev);
-       int ret;
-
-       flush_delayed_work(&dev_priv->rps.delayed_resume_work);
 
-       mutex_lock(&dev_priv->rps.hw_lock);
-       ret = intel_gpu_freq(dev_priv, dev_priv->rps.max_freq_softlimit);
-       mutex_unlock(&dev_priv->rps.hw_lock);
-
-       return snprintf(buf, PAGE_SIZE, "%d\n", ret);
+       return snprintf(buf, PAGE_SIZE, "%d\n",
+                       intel_gpu_freq(dev_priv,
+                                      dev_priv->rps.max_freq_softlimit));
 }
 
 static ssize_t gt_max_freq_mhz_store(struct device *kdev,
@@ -395,8 +380,6 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev,
        if (ret)
                return ret;
 
-       flush_delayed_work(&dev_priv->rps.delayed_resume_work);
-
        intel_runtime_pm_get(dev_priv);
 
        mutex_lock(&dev_priv->rps.hw_lock);
@@ -438,15 +421,10 @@ static ssize_t gt_min_freq_mhz_show(struct device *kdev, struct device_attribute
        struct drm_minor *minor = dev_to_drm_minor(kdev);
        struct drm_device *dev = minor->dev;
        struct drm_i915_private *dev_priv = to_i915(dev);
-       int ret;
 
-       flush_delayed_work(&dev_priv->rps.delayed_resume_work);
-
-       mutex_lock(&dev_priv->rps.hw_lock);
-       ret = intel_gpu_freq(dev_priv, dev_priv->rps.min_freq_softlimit);
-       mutex_unlock(&dev_priv->rps.hw_lock);
-
-       return snprintf(buf, PAGE_SIZE, "%d\n", ret);
+       return snprintf(buf, PAGE_SIZE, "%d\n",
+                       intel_gpu_freq(dev_priv,
+                                      dev_priv->rps.min_freq_softlimit));
 }
 
 static ssize_t gt_min_freq_mhz_store(struct device *kdev,
@@ -463,8 +441,6 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev,
        if (ret)
                return ret;
 
-       flush_delayed_work(&dev_priv->rps.delayed_resume_work);
-
        intel_runtime_pm_get(dev_priv);
 
        mutex_lock(&dev_priv->rps.hw_lock);