On Thu, Oct 23, 2014 at 08:35:24PM +0300, Mika Kuoppala wrote:
> because it is handy to direct bug reporters to do things like:
> 'grep -i suspend /sys/kernel/debug/dri/0/i915_gpu_state'
>
> Signed-off-by: Mika Kuoppala <mika.kuopp...@intel.com>
> ---
> drivers/gpu/drm/i915/i915_debugfs.c | 42
> +++++++++++++++++++++++++++++++++++
> drivers/gpu/drm/i915/i915_drv.h | 4 ++++
> drivers/gpu/drm/i915/i915_gpu_error.c | 22 ++++++++++++++----
> 3 files changed, 64 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
> b/drivers/gpu/drm/i915/i915_debugfs.c
> index e60d5c2..8d3266d 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -976,6 +976,47 @@ static const struct file_operations
> i915_error_state_fops = {
> .release = i915_error_state_release,
> };
>
> +static int i915_gpu_state_open(struct inode *inode, struct file *file)
> +{
> + struct drm_device *dev = inode->i_private;
> + struct i915_error_state_file_priv *gpu_priv;
> +
> + gpu_priv = kzalloc(sizeof(*gpu_priv), GFP_KERNEL);
> + if (!gpu_priv)
> + return -ENOMEM;
> +
> + gpu_priv->dev = dev;
> +
> + gpu_priv->error = i915_capture_gpu_state(dev);
> + if (gpu_priv->error == NULL) {
> + kfree(gpu_priv);
> + return -ENOMEM;
> + }
> +
> + file->private_data = gpu_priv;
> +
> + return 0;
> +}
> +
> +static int i915_gpu_state_release(struct inode *inode, struct file *file)
> +{
> + struct i915_error_state_file_priv *gpu_priv = file->private_data;
> +
> + kref_put(&gpu_priv->error->ref, i915_gpu_state_free);
A little bit of syntactic sugar here, and you can have my reviewed-by.
static inline void i915_error_state_put(struct drm_i915_error_state *err)
{
kref_put(&err->ref, __i915_error_state_free);
}
I do agree that i915_gpu_state is a better name than i915_error_state.
Another patch for a rainy day without intelskitchen.com?
-Chris
--
Chris Wilson, Intel Open Source Technology Centre
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