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 DEBUG_FS 22 select PREEMPT_COUNT 23 select I2C_CHARDEV 24 select DRM_DP_AUX_CHARDEV 25 select X86_MSR # used by igt/pm_rpm 26 select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks) 27 select DRM_DEBUG_MM if DRM=y 28 select DRM_DEBUG_MM_SELFTEST 29 select SW_SYNC # signaling validation framework (igt/syncobj*) 30 select DRM_I915_SW_FENCE_DEBUG_OBJECTS 31 select DRM_I915_SELFTEST 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 depends on DRM_I915_DEBUG_GEM 56 select TRACING 57 default n 58 help 59 Enable additional and verbose debugging output that will spam 60 ordinary tests, but may be vital for post-mortem debugging when 61 used with /proc/sys/kernel/ftrace_dump_on_oops 62 63 Recommended for driver developers only. 64 65 If in doubt, say "N". 66 67config DRM_I915_SW_FENCE_DEBUG_OBJECTS 68 bool "Enable additional driver debugging for fence objects" 69 depends on DRM_I915 70 select DEBUG_OBJECTS 71 default n 72 help 73 Choose this option to turn on extra driver debugging that may affect 74 performance but will catch some internal issues. 75 76 Recommended for driver developers only. 77 78 If in doubt, say "N". 79 80config DRM_I915_SW_FENCE_CHECK_DAG 81 bool "Enable additional driver debugging for detecting dependency cycles" 82 depends on DRM_I915 83 default n 84 help 85 Choose this option to turn on extra driver debugging that may affect 86 performance but will catch some internal issues. 87 88 Recommended for driver developers only. 89 90 If in doubt, say "N". 91 92config DRM_I915_SELFTEST 93 bool "Enable selftests upon driver load" 94 depends on DRM_I915 95 default n 96 select FAULT_INJECTION 97 select PRIME_NUMBERS 98 help 99 Choose this option to allow the driver to perform selftests upon 100 loading; also requires the i915.selftest=1 module parameter. To 101 exit the module after running the selftests (i.e. to prevent normal 102 module initialisation afterwards) use i915.selftest=-1. 103 104 Recommended for driver developers only. 105 106 If in doubt, say "N". 107 108config DRM_I915_SELFTEST_BROKEN 109 bool "Enable broken and dangerous selftests" 110 depends on DRM_I915_SELFTEST 111 depends on BROKEN 112 default n 113 help 114 This option enables the execution of selftests that are "dangerous" 115 and may trigger unintended HW side-effects as they break strict 116 rules given in the HW specification. For science. 117 118 Recommended for masochistic driver developers only. 119 120 If in doubt, say "N". 121 122config DRM_I915_LOW_LEVEL_TRACEPOINTS 123 bool "Enable low level request tracing events" 124 depends on DRM_I915 125 default n 126 help 127 Choose this option to turn on low level request tracing events. 128 This provides the ability to precisely monitor engine utilisation 129 and also analyze the request dependency resolving timeline. 130 131 If in doubt, say "N". 132 133config DRM_I915_DEBUG_VBLANK_EVADE 134 bool "Enable extra debug warnings for vblank evasion" 135 depends on DRM_I915 136 default n 137 help 138 Choose this option to turn on extra debug warnings for the 139 vblank evade mechanism. This gives a warning every time the 140 the deadline allotted for the vblank evade critical section 141 is exceeded, even if there isn't an actual risk of missing 142 the vblank. 143 144 If in doubt, say "N". 145