lopment
> > Cc: Daniel Vetter ; Vetter, Daniel
> >
> > Subject: [Intel-gfx] [PATCH] RFC: drm/i915: Switch obj->mm.lock lockdep
> > annotations on its head
> >
> > The trouble with having a plain nesting flag for locks which do not
> > naturally
> &
> -Original Message-
> From: Intel-gfx [mailto:intel-gfx-boun...@lists.freedesktop.org] On Behalf
> Of Daniel Vetter
> Sent: Wednesday, August 14, 2019 12:25 PM
> To: Intel Graphics Development
> Cc: Daniel Vetter ; Vetter, Daniel
>
> Subject: [Intel-gfx] [PATC
Quoting Daniel Vetter (2019-08-15 08:23:01)
> On Wed, Aug 14, 2019 at 07:57:57PM +0100, Chris Wilson wrote:
> > Quoting Daniel Vetter (2019-08-14 19:49:41)
> > > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
> > > b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
> > > index
On Wed, Aug 14, 2019 at 07:57:57PM +0100, Chris Wilson wrote:
> Quoting Daniel Vetter (2019-08-14 19:49:41)
> > diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
> > b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
> > index d474c6ac4100..1ea3c3c96a5a 100644
> > ---
The trouble with having a plain nesting flag for locks which do not
naturally nest (unlike block devices and their partitions, which is
the original motivation for nesting levels) is that lockdep will
never spot a true deadlock if you screw up.
This patch is an attempt at trying better, by
Quoting Daniel Vetter (2019-08-14 19:49:41)
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
> b/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
> index d474c6ac4100..1ea3c3c96a5a 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_object_types.h
> +++
The trouble with having a plain nesting flag for locks which do not
naturally nest (unlike block devices and their partitions, which is
the original motivation for nesting levels) is that lockdep will
never spot a true deadlock if you screw up.
This patch is an attempt at trying better, by
