This is the minimal patchset I have for working around the missed
IRQs. I've been running it since Monday doing test runs for other
work, and it appears to be stable.
___
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Previous to this commit, testing easily reproduced a failure where the
seqno would apparently arrive after the IRQ associated with it, with test
programs as simple as:
for (;;) {
glCopyPixels(0, 0, 1, 1);
glFinish();
}
Various workarounds we've seen for previous generations didn't work t
As a workaround for IRQ synchronization issues in the gen7 BLT ring,
we want to turn the two wait functions into polling loops.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/i915/i915_gem.c |4
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gem
The waits we do here are generally so short that sleeping is a bad
idea unless we have an IRQ to wake us up. Improves regression test
performance from 18 minutes to 3.5 minutes on gen7, which is now
consistent with the previous generation.
Signed-off-by: Eric Anholt
---
drivers/gpu/drm/i915/i91
Some decent history digging indicates that this was to be used for the
GLX_MESA_allocate_memory extension but never actually implemented for
any released i915 userspace code.
So just rip it out.
Cc: Dave Airlie
Cc: Keith Whitwell
Signed-Off-by: Daniel Vetter
---
drivers/gpu/drm/drm_ioctl.c
On Thu, Dec 22, 2011 at 09:54:27AM -0800, Keith Packard wrote:
> On Thu, 22 Dec 2011 01:28:36 +0100, Daniel Vetter
> wrote:
> > Half of the users actually don't want just no tracing, but need to
> > avoid the forcewake dance for correctness. So add new variants
> > __I915_READ and __I915_WRITE fo
On Thu, 22 Dec 2011 01:28:36 +0100, Daniel Vetter
wrote:
> Half of the users actually don't want just no tracing, but need to
> avoid the forcewake dance for correctness. So add new variants
> __I915_READ and __I915_WRITE for that.
I'd sure like something more descriptive than '__' here. Perhaps
On Wed, 21 Dec 2011 13:26:28 -0800, Ben Widawsky wrote:
> On 12/21/2011 10:31 AM, Eric Anholt wrote:
> > diff --git a/drivers/gpu/drm/i915/intel_display.c
> > b/drivers/gpu/drm/i915/intel_display.c
> > index 8a61b81..1fe0c67 100644
> > --- a/drivers/gpu/drm/i915/intel_display.c
> > +++ b/drivers/
