[Intel-gfx] [PATCH v2 1/6] drm/atomic: Prepare drm_modeset_lock infrastructure for interruptible waiting, v2.

[Emil Velikov]

On 12 September 2017 at 14:37, Maarten Lankhorst
<maarten.lankhorst at linux.intel.com> wrote:
> When we want to make drm_atomic_commit interruptible, there are a lot of
> places that call the lock function, which we don't have control over.
>
> Rather than trying to convert every single one, it's easier to toggle
> interruptible waiting per acquire_ctx. If drm_modeset_acquire_init is
> called with DRM_MODESET_ACQUIRE_INTERRUPTIBLE, then we will perform
> interruptible waits in drm_modeset_lock and drm_modeset_backoff.
>
> Changes since v1:
> - Fix locking example in drm_modeset_lock.c to be compatible
>   with interruptible waiting (xexaxo) and make it default.
>   Uninterruptible waiting shouldn't happen except in corner cases,
>   but the example will still apply if the flag is removed.
> - Add drm_modeset_lock_single_interruptible() to documentation.
> - Fix dead link to removed drm_modeset_lock_interruptible() in
>   drm_modeset_lock().
>
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch> #v1
> Cc: Emil Velikov <emil.l.velikov at gmail.com>
Thanks for the documentation updates/fixes Maarten. FWIW the series is
Reviewed-by: Emil Velikov <emil.l.velikov at gmail.com>

-Emil