1config DRM_I915_WERROR 2 bool "Force GCC to throw an error instead of a warning when compiling" 3 # As this may inadvertently break the build, only allow the user 4 # to shoot oneself in the foot iff they aim really hard 5 depends on EXPERT 6 # We use the dependency on !COMPILE_TEST to not be enabled in 7 # allmodconfig or allyesconfig configurations 8 depends on !COMPILE_TEST 9 default n 10 help 11 Add -Werror to the build flags for (and only for) i915.ko. 12 Do not enable this unless you are writing code for the i915.ko module. 13 14 Recommended for driver developers only. 15 16 If in doubt, say "N". 17 18config DRM_I915_DEBUG 19 bool "Enable additional driver debugging" 20 depends on DRM_I915 21 select PREEMPT_COUNT 22 select I2C_CHARDEV 23 select DRM_DP_AUX_CHARDEV 24 select X86_MSR # used by igt/pm_rpm 25 select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks) 26 select DRM_DEBUG_MM if DRM=y 27 select DRM_DEBUG_MM_SELFTEST 28 select SW_SYNC # signaling validation framework (igt/syncobj*) 29 select DRM_I915_SW_FENCE_DEBUG_OBJECTS 30 select DRM_I915_SELFTEST 31 select DRM_I915_TRACE_GEM 32 default n 33 help 34 Choose this option to turn on extra driver debugging that may affect 35 performance but will catch some internal issues. 36 37 Recommended for driver developers only. 38 39 If in doubt, say "N". 40 41config DRM_I915_DEBUG_GEM 42 bool "Insert extra checks into the GEM internals" 43 default n 44 depends on DRM_I915_WERROR 45 help 46 Enable extra sanity checks (including BUGs) along the GEM driver 47 paths that may slow the system down and if hit hang the machine. 48 49 Recommended for driver developers only. 50 51 If in doubt, say "N". 52 53config DRM_I915_TRACE_GEM 54 bool "Insert extra ftrace output from the GEM internals" 55 select TRACING 56 default n 57 help 58 Enable additional and verbose debugging output that will spam 59 ordinary tests, but may be vital for post-mortem debugging when 60 used with /proc/sys/kernel/ftrace_dump_on_oops 61 62 Recommended for driver developers only. 63 64 If in doubt, say "N". 65 66config DRM_I915_SW_FENCE_DEBUG_OBJECTS 67 bool "Enable additional driver debugging for fence objects" 68 depends on DRM_I915 69 select DEBUG_OBJECTS 70 default n 71 help 72 Choose this option to turn on extra driver debugging that may affect 73 performance but will catch some internal issues. 74 75 Recommended for driver developers only. 76 77 If in doubt, say "N". 78 79config DRM_I915_SW_FENCE_CHECK_DAG 80 bool "Enable additional driver debugging for detecting dependency cycles" 81 depends on DRM_I915 82 default n 83 help 84 Choose this option to turn on extra driver debugging that may affect 85 performance but will catch some internal issues. 86 87 Recommended for driver developers only. 88 89 If in doubt, say "N". 90 91config DRM_I915_SELFTEST 92 bool "Enable selftests upon driver load" 93 depends on DRM_I915 94 default n 95 select FAULT_INJECTION 96 select PRIME_NUMBERS 97 help 98 Choose this option to allow the driver to perform selftests upon 99 loading; also requires the i915.selftest=1 module parameter. To 100 exit the module after running the selftests (i.e. to prevent normal 101 module initialisation afterwards) use i915.selftest=-1. 102 103 Recommended for driver developers only. 104 105 If in doubt, say "N". 106 107config DRM_I915_SELFTEST_BROKEN 108 bool "Enable broken and dangerous selftests" 109 depends on DRM_I915_SELFTEST 110 depends on BROKEN 111 default n 112 help 113 This option enables the execution of selftests that are "dangerous" 114 and may trigger unintended HW side-effects as they break strict 115 rules given in the HW specification. For science. 116 117 Recommended for masochistic driver developers only. 118 119 If in doubt, say "N". 120 121config DRM_I915_LOW_LEVEL_TRACEPOINTS 122 bool "Enable low level request tracing events" 123 depends on DRM_I915 124 default n 125 help 126 Choose this option to turn on low level request tracing events. 127 This provides the ability to precisely monitor engine utilisation 128 and also analyze the request dependency resolving timeline. 129 130 If in doubt, say "N". 131 132config DRM_I915_DEBUG_VBLANK_EVADE 133 bool "Enable extra debug warnings for vblank evasion" 134 depends on DRM_I915 135 default n 136 help 137 Choose this option to turn on extra debug warnings for the 138 vblank evade mechanism. This gives a warning every time the 139 the deadline allotted for the vblank evade critical section 140 is exceeded, even if there isn't an actual risk of missing 141 the vblank. 142 143 If in doubt, say "N". 144