[PATCH v6 1/3] drm: Create a task info option for wedge events

[Raag Jadav]

On Wed, May 21, 2025 at 12:33:21PM -0300, André Almeida wrote:
> When a device get wedged, it might be caused by a guilty application.
> For userspace, knowing which task was the cause can be useful for some

s/cause/involved

> situations, like for implementing a policy, logs or for giving a chance
> for the compositor to let the user know what task caused the problem.

Ditto

> This is an optional argument, when the task info is not available, the
> PID and TASK string won't appear in the event string.
> 
> Sometimes just the PID isn't enough giving that the task might be already
> dead by the time userspace will try to check what was this PID's name,
> so to make the life easier also notify what's the task's name in the user
> event.

...

> -int drm_dev_wedged_event(struct drm_device *dev, unsigned long method)
> +int drm_dev_wedged_event(struct drm_device *dev, unsigned long method,
> +			 struct drm_wedge_task_info *info)
>  {
>  	const char *recovery = NULL;
>  	unsigned int len, opt;
> -	/* Event string length up to 28+ characters with available methods */
> -	char event_string[32];
> -	char *envp[] = { event_string, NULL };
> +	char event_string[WEDGE_STR_LEN], pid_string[PID_LEN] = "", comm_string[TASK_COMM_LEN] = "";

Most likely there's no need to initialize these.

With above changes,

Reviewed-by: Raag Jadav <raag.jadav at intel.com>