On Mon, Dec 19, 2016 at 10:43:49PM +0800, Geliang Tang wrote:
> To make the code clearer, use rb_entry() instead of container_of() to
> deal with rbtree.
> 
> Signed-off-by: Geliang Tang <geliangtang at gmail.com>

Not sure a direct alias for container_of is all that useful, but we have
list_entry too ...

Queued up for 4.11, thanks for the patch.
-Daniel

> ---
>  drivers/gpu/drm/i915/i915_debugfs.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c 
> b/drivers/gpu/drm/i915/i915_debugfs.c
> index b77b53b..e04d9a1 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -686,7 +686,7 @@ static void i915_ring_seqno_info(struct seq_file *m,
>  
>       spin_lock_irq(&b->lock);
>       for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {
> -             struct intel_wait *w = container_of(rb, typeof(*w), node);
> +             struct intel_wait *w = rb_entry(rb, typeof(*w), node);
>  
>               seq_printf(m, "Waiting (%s): %s [%d] on %x\n",
>                          engine->name, w->tsk->comm, w->tsk->pid, w->seqno);
> @@ -1336,7 +1336,7 @@ static int i915_hangcheck_info(struct seq_file *m, void 
> *unused)
>                                         
> &dev_priv->gpu_error.missed_irq_rings)));
>               spin_lock_irq(&b->lock);
>               for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {
> -                     struct intel_wait *w = container_of(rb, typeof(*w), 
> node);
> +                     struct intel_wait *w = rb_entry(rb, typeof(*w), node);
>  
>                       seq_printf(m, "\t%s [%d] waiting for %x\n",
>                                  w->tsk->comm, w->tsk->pid, w->seqno);
> @@ -3252,7 +3252,7 @@ static int i915_engine_info(struct seq_file *m, void 
> *unused)
>  
>               spin_lock_irq(&b->lock);
>               for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {
> -                     struct intel_wait *w = container_of(rb, typeof(*w), 
> node);
> +                     struct intel_wait *w = rb_entry(rb, typeof(*w), node);
>  
>                       seq_printf(m, "\t%s [%d] waiting for %x\n",
>                                  w->tsk->comm, w->tsk->pid, w->seqno);
> -- 
> 2.9.3
> 
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> dri-devel at lists.freedesktop.org
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

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