1# SPDX-License-Identifier: GPL-2.0-only 2config DRM_I915_WERROR 3 bool "Force GCC to throw an error instead of a warning when compiling" 4 # As this may inadvertently break the build, only allow the user 5 # to shoot oneself in the foot iff they aim really hard 6 depends on EXPERT 7 # We use the dependency on !COMPILE_TEST to not be enabled in 8 # allmodconfig or allyesconfig configurations 9 depends on !COMPILE_TEST 10 default n 11 help 12 Add -Werror to the build flags for (and only for) i915.ko. 13 Do not enable this unless you are writing code for the i915.ko module. 14 15 Recommended for driver developers only. 16 17 If in doubt, say "N". 18 19config DRM_I915_DEBUG 20 bool "Enable additional driver debugging" 21 depends on DRM_I915 22 select DEBUG_FS 23 select PREEMPT_COUNT 24 select REFCOUNT_FULL 25 select I2C_CHARDEV 26 select STACKDEPOT 27 select DRM_DP_AUX_CHARDEV 28 select X86_MSR # used by igt/pm_rpm 29 select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks) 30 select DRM_DEBUG_MM if DRM=y 31 select DRM_DEBUG_SELFTEST 32 select SW_SYNC # signaling validation framework (igt/syncobj*) 33 select DRM_I915_SW_FENCE_DEBUG_OBJECTS 34 select DRM_I915_SELFTEST 35 select DRM_I915_DEBUG_RUNTIME_PM 36 select DRM_I915_DEBUG_MMIO 37 default n 38 help 39 Choose this option to turn on extra driver debugging that may affect 40 performance but will catch some internal issues. 41 42 Recommended for driver developers only. 43 44 If in doubt, say "N". 45 46config DRM_I915_DEBUG_MMIO 47 bool "Always insert extra checks around mmio access by default" 48 default n 49 help 50 By default, always enables the extra sanity checks (extra register 51 reads) around every mmio (register) access that will slow the system 52 down. This sets the default value of i915.mmio_debug to -1 and can 53 be overridden at module load. 54 55 Recommended for driver developers only. 56 57 If in doubt, say "N". 58 59config DRM_I915_DEBUG_GEM 60 bool "Insert extra checks into the GEM internals" 61 default n 62 depends on DRM_I915_WERROR 63 help 64 Enable extra sanity checks (including BUGs) along the GEM driver 65 paths that may slow the system down and if hit hang the machine. 66 67 Recommended for driver developers only. 68 69 If in doubt, say "N". 70 71config DRM_I915_ERRLOG_GEM 72 bool "Insert extra logging (very verbose) for common GEM errors" 73 default n 74 depends on DRM_I915_DEBUG_GEM 75 help 76 Enable additional logging that may help track down the cause of 77 principally userspace errors. 78 79 Recommended for driver developers only. 80 81 If in doubt, say "N". 82 83config DRM_I915_TRACE_GEM 84 bool "Insert extra ftrace output from the GEM internals" 85 depends on DRM_I915_DEBUG_GEM 86 select TRACING 87 default n 88 help 89 Enable additional and verbose debugging output that will spam 90 ordinary tests, but may be vital for post-mortem debugging when 91 used with /proc/sys/kernel/ftrace_dump_on_oops 92 93 Recommended for driver developers only. 94 95 If in doubt, say "N". 96 97config DRM_I915_SW_FENCE_DEBUG_OBJECTS 98 bool "Enable additional driver debugging for fence objects" 99 depends on DRM_I915 100 select DEBUG_OBJECTS 101 default n 102 help 103 Choose this option to turn on extra driver debugging that may affect 104 performance but will catch some internal issues. 105 106 Recommended for driver developers only. 107 108 If in doubt, say "N". 109 110config DRM_I915_SW_FENCE_CHECK_DAG 111 bool "Enable additional driver debugging for detecting dependency cycles" 112 depends on DRM_I915 113 default n 114 help 115 Choose this option to turn on extra driver debugging that may affect 116 performance but will catch some internal issues. 117 118 Recommended for driver developers only. 119 120 If in doubt, say "N". 121 122config DRM_I915_DEBUG_GUC 123 bool "Enable additional driver debugging for GuC" 124 depends on DRM_I915 125 default n 126 help 127 Choose this option to turn on extra driver debugging that may affect 128 performance but will help resolve GuC related issues. 129 130 Recommended for driver developers only. 131 132 If in doubt, say "N". 133 134config DRM_I915_SELFTEST 135 bool "Enable selftests upon driver load" 136 depends on DRM_I915 137 default n 138 select FAULT_INJECTION 139 select PRIME_NUMBERS 140 help 141 Choose this option to allow the driver to perform selftests upon 142 loading; also requires the i915.selftest=1 module parameter. To 143 exit the module after running the selftests (i.e. to prevent normal 144 module initialisation afterwards) use i915.selftest=-1. 145 146 Recommended for driver developers only. 147 148 If in doubt, say "N". 149 150config DRM_I915_SELFTEST_BROKEN 151 bool "Enable broken and dangerous selftests" 152 depends on DRM_I915_SELFTEST 153 depends on BROKEN 154 default n 155 help 156 This option enables the execution of selftests that are "dangerous" 157 and may trigger unintended HW side-effects as they break strict 158 rules given in the HW specification. For science. 159 160 Recommended for masochistic driver developers only. 161 162 If in doubt, say "N". 163 164config DRM_I915_LOW_LEVEL_TRACEPOINTS 165 bool "Enable low level request tracing events" 166 depends on DRM_I915 167 default n 168 help 169 Choose this option to turn on low level request tracing events. 170 This provides the ability to precisely monitor engine utilisation 171 and also analyze the request dependency resolving timeline. 172 173 If in doubt, say "N". 174 175config DRM_I915_DEBUG_VBLANK_EVADE 176 bool "Enable extra debug warnings for vblank evasion" 177 depends on DRM_I915 178 default n 179 help 180 Choose this option to turn on extra debug warnings for the 181 vblank evade mechanism. This gives a warning every time the 182 the deadline allotted for the vblank evade critical section 183 is exceeded, even if there isn't an actual risk of missing 184 the vblank. 185 186 If in doubt, say "N". 187 188config DRM_I915_DEBUG_RUNTIME_PM 189 bool "Enable extra state checking for runtime PM" 190 depends on DRM_I915 191 default n 192 select STACKDEPOT 193 help 194 Choose this option to turn on extra state checking for the 195 runtime PM functionality. This may introduce overhead during 196 driver loading, suspend and resume operations. 197 198 If in doubt, say "N" 199