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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2017-10-25 16:32:07 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2017-11-06 11:17:03 +0000 |
| commit | 69ea47a5a98b198c9d36fe157a3986748a9e2554 (patch) | |
| tree | 2d6ab51832cd1cb82506b00d0db39a48120ffa3b /drivers/gpu/drm/i915 | |
| parent | d36caeea4b0f76bf691c7d0cddc4a71ed93783c5 (diff) | |
| download | talos-obmc-linux-69ea47a5a98b198c9d36fe157a3986748a9e2554.tar.gz talos-obmc-linux-69ea47a5a98b198c9d36fe157a3986748a9e2554.zip | |
drm/i915/selftests: Hide dangerous tests
Some tests are designed to exercise the limits of the HW and may trigger
unintended side-effects making the machine unusable. This should not be
executed by default, but are still useful for early platform validation.
References: https://bugs.freedesktop.org/show_bug.cgi?id=103453
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171025153207.9589-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/Kconfig.debug | 14 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/intel_uncore.c | 8 |
2 files changed, 18 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/Kconfig.debug b/drivers/gpu/drm/i915/Kconfig.debug index aed7d207ea84..19c77c6feb24 100644 --- a/drivers/gpu/drm/i915/Kconfig.debug +++ b/drivers/gpu/drm/i915/Kconfig.debug @@ -90,6 +90,20 @@ config DRM_I915_SELFTEST If in doubt, say "N". +config DRM_I915_SELFTEST_BROKEN + bool "Enable broken and dangerous selftests" + depends on DRM_I915_SELFTEST + depends on BROKEN + default n + help + This option enables the execution of selftests that are "dangerous" + and may trigger unintended HW side-effects as they break strict + rules given in the HW specification. For science. + + Recommended for masochistic driver developers only. + + If in doubt, say "N". + config DRM_I915_LOW_LEVEL_TRACEPOINTS bool "Enable low level request tracing events" depends on DRM_I915 diff --git a/drivers/gpu/drm/i915/selftests/intel_uncore.c b/drivers/gpu/drm/i915/selftests/intel_uncore.c index 3cac22eb47ce..f52a4ab9aa98 100644 --- a/drivers/gpu/drm/i915/selftests/intel_uncore.c +++ b/drivers/gpu/drm/i915/selftests/intel_uncore.c @@ -120,10 +120,10 @@ static int intel_uncore_check_forcewake_domains(struct drm_i915_private *dev_pri !IS_CHERRYVIEW(dev_priv)) return 0; - if (IS_VALLEYVIEW(dev_priv)) /* XXX system lockup! */ - return 0; - - if (IS_BROADWELL(dev_priv)) /* XXX random GPU hang afterwards! */ + /* + * This test may lockup the machine or cause GPU hangs afterwards. + */ + if (!IS_ENABLED(CONFIG_DRM_I915_SELFTEST_BROKEN)) return 0; valid = kzalloc(BITS_TO_LONGS(FW_RANGE) * sizeof(*valid), |
