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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2014-12-18 10:55:50 +0000 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-03-17 22:30:00 +0100 |
| commit | 48572edd9d736d6fabd40b810a0de844ee4f800b (patch) | |
| tree | 122fc483ed41a59a901c085daa943ddedb7f1e27 /drivers/gpu/drm/i915/i915_drv.h | |
| parent | 6e0b3f8d64252664f240f0cbd23e3d22ce3df001 (diff) | |
| download | lwn-48572edd9d736d6fabd40b810a0de844ee4f800b.tar.gz lwn-48572edd9d736d6fabd40b810a0de844ee4f800b.zip | |
drm/i915: Disable the mmio.debug WARN after it fires
If we have a single unclaimed register, we will have lots. A WARN for
each one makes the machine unusable and does not aid debugging. Convert
the i915.mmio_debug option to a counter for how many WARNs to fire
before shutting up. Even when i915.mmio_debug was disabled it would
continue to shout an *ERROR* for every interrupt, without any
information at all for debugging.
The massive verbiage was added in
commit 5978118c39c2f72fd8b39ef9c086723542384809
Author: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date: Wed Jul 16 17:49:29 2014 -0300
drm/i915: reorganize the unclaimed register detection code
v2: Automatically enable invalid mmio reporting for the *next* invalid
access if mmio_debug is disabled by default. This should give us clearer
debug information without polluting the logs too much.
v3: Compile fixes, rebase.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
[danvet: Update modparam text per the thread.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index e5516a3bb5cb..238bfd02b494 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2442,7 +2442,7 @@ struct i915_params { bool disable_display; bool disable_vtd_wa; int use_mmio_flip; - bool mmio_debug; + int mmio_debug; bool verbose_state_checks; bool nuclear_pageflip; }; |