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- # SPDX-License-Identifier: GPL-2.0-only
- config DRM_I915_WERROR
- bool "Force GCC to throw an error instead of a warning when compiling"
- # As this may inadvertently break the build, only allow the user
- # to shoot oneself in the foot iff they aim really hard
- depends on EXPERT
- # We use the dependency on !COMPILE_TEST to not be enabled in
- # allmodconfig or allyesconfig configurations
- depends on !COMPILE_TEST
- default n
- help
- Add -Werror to the build flags for (and only for) i915.ko.
- Do not enable this unless you are writing code for the i915.ko module.
- Recommended for driver developers only.
- If in doubt, say "N".
- config DRM_I915_DEBUG
- bool "Enable additional driver debugging"
- depends on DRM_I915
- depends on EXPERT # only for developers
- depends on !COMPILE_TEST # never built by robots
- select DEBUG_FS
- select PREEMPT_COUNT
- select I2C_CHARDEV
- select STACKDEPOT
- select DRM_DP_AUX_CHARDEV
- select X86_MSR # used by igt/pm_rpm
- select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks)
- select DRM_DEBUG_MM if DRM=y
- select DRM_EXPORT_FOR_TESTS if m
- select DRM_DEBUG_SELFTEST
- select DMABUF_SELFTESTS
- select SW_SYNC # signaling validation framework (igt/syncobj*)
- select DRM_I915_WERROR
- select DRM_I915_DEBUG_GEM
- select DRM_I915_DEBUG_GEM_ONCE
- select DRM_I915_DEBUG_MMIO
- select DRM_I915_DEBUG_RUNTIME_PM
- select DRM_I915_SW_FENCE_DEBUG_OBJECTS
- select DRM_I915_SELFTEST
- default n
- help
- Choose this option to turn on extra driver debugging that may affect
- performance but will catch some internal issues.
- Recommended for driver developers only.
- If in doubt, say "N".
- config DRM_I915_DEBUG_MMIO
- bool "Always insert extra checks around mmio access by default"
- default n
- help
- By default, always enables the extra sanity checks (extra register
- reads) around every mmio (register) access that will slow the system
- down. This sets the default value of i915.mmio_debug to -1 and can
- be overridden at module load.
- Recommended for driver developers only.
- If in doubt, say "N".
- config DRM_I915_DEBUG_GEM
- bool "Insert extra checks into the GEM internals"
- default n
- depends on DRM_I915_WERROR
- help
- Enable extra sanity checks (including BUGs) along the GEM driver
- paths that may slow the system down and if hit hang the machine.
- Recommended for driver developers only.
- If in doubt, say "N".
- config DRM_I915_DEBUG_GEM_ONCE
- bool "Make a GEM debug failure fatal"
- default n
- depends on DRM_I915_DEBUG_GEM
- help
- During development, we often only want the very first failure
- as that would otherwise be lost in the deluge of subsequent
- failures. However, more casual testers may not want to trigger
- a hard BUG_ON and hope that the system remains sufficiently usable
- to capture a bug report in situ.
- Recommended for driver developers only.
- If in doubt, say "N".
- config DRM_I915_ERRLOG_GEM
- bool "Insert extra logging (very verbose) for common GEM errors"
- default n
- depends on DRM_I915_DEBUG_GEM
- help
- Enable additional logging that may help track down the cause of
- principally userspace errors.
- Recommended for driver developers only.
- If in doubt, say "N".
- config DRM_I915_TRACE_GEM
- bool "Insert extra ftrace output from the GEM internals"
- depends on DRM_I915_DEBUG_GEM
- select TRACING
- default n
- help
- Enable additional and verbose debugging output that will spam
- ordinary tests, but may be vital for post-mortem debugging when
- used with /proc/sys/kernel/ftrace_dump_on_oops
- Recommended for driver developers only.
- If in doubt, say "N".
- config DRM_I915_TRACE_GTT
- bool "Insert extra ftrace output from the GTT internals"
- depends on DRM_I915_DEBUG_GEM
- select TRACING
- default n
- help
- Enable additional and verbose debugging output that will spam
- ordinary tests, but may be vital for post-mortem debugging when
- used with /proc/sys/kernel/ftrace_dump_on_oops
- Recommended for driver developers only.
- If in doubt, say "N".
- config DRM_I915_SW_FENCE_DEBUG_OBJECTS
- bool "Enable additional driver debugging for fence objects"
- depends on DRM_I915
- select DEBUG_OBJECTS
- default n
- help
- Choose this option to turn on extra driver debugging that may affect
- performance but will catch some internal issues.
- Recommended for driver developers only.
- If in doubt, say "N".
- config DRM_I915_SW_FENCE_CHECK_DAG
- bool "Enable additional driver debugging for detecting dependency cycles"
- depends on DRM_I915
- default n
- help
- Choose this option to turn on extra driver debugging that may affect
- performance but will catch some internal issues.
- Recommended for driver developers only.
- If in doubt, say "N".
- config DRM_I915_DEBUG_GUC
- bool "Enable additional driver debugging for GuC"
- depends on DRM_I915
- default n
- help
- Choose this option to turn on extra driver debugging that may affect
- performance but will help resolve GuC related issues.
- Recommended for driver developers only.
- If in doubt, say "N".
- config DRM_I915_SELFTEST
- bool "Enable selftests upon driver load"
- depends on DRM_I915
- default n
- select DRM_EXPORT_FOR_TESTS if m
- select FAULT_INJECTION
- select PRIME_NUMBERS
- select CRC32
- help
- Choose this option to allow the driver to perform selftests upon
- loading; also requires the i915.selftest=1 module parameter. To
- exit the module after running the selftests (i.e. to prevent normal
- module initialisation afterwards) use i915.selftest=-1.
- Recommended for driver developers only.
- 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
- default n
- help
- Choose this option to turn on low level request tracing events.
- This provides the ability to precisely monitor engine utilisation
- and also analyze the request dependency resolving timeline.
- Recommended for driver developers only.
- If in doubt, say "N".
- config DRM_I915_DEBUG_VBLANK_EVADE
- bool "Enable extra debug warnings for vblank evasion"
- depends on DRM_I915
- default n
- help
- Choose this option to turn on extra debug warnings for the
- vblank evade mechanism. This gives a warning every time the
- the deadline allotted for the vblank evade critical section
- is exceeded, even if there isn't an actual risk of missing
- the vblank.
- Recommended for driver developers only.
- If in doubt, say "N".
- config DRM_I915_DEBUG_RUNTIME_PM
- bool "Enable extra state checking for runtime PM"
- depends on DRM_I915
- default n
- select STACKDEPOT
- help
- Choose this option to turn on extra state checking for the
- runtime PM functionality. This may introduce overhead during
- driver loading, suspend and resume operations.
- Recommended for driver developers only.
- If in doubt, say "N"
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