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 select HEADER_TEST 11 default n 12 help 13 Add -Werror to the build flags for (and only for) i915.ko. 14 Do not enable this unless you are writing code for the i915.ko module. 15 16 Recommended for driver developers only. 17 18 If in doubt, say "N". 19 20config DRM_I915_DEBUG 21 bool "Enable additional driver debugging" 22 depends on DRM_I915 23 select DEBUG_FS 24 select PREEMPT_COUNT 25 select REFCOUNT_FULL 26 select I2C_CHARDEV 27 select STACKDEPOT 28 select DRM_DP_AUX_CHARDEV 29 select X86_MSR # used by igt/pm_rpm 30 select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks) 31 select DRM_DEBUG_MM if DRM=y 32 select DRM_DEBUG_SELFTEST 33 select DMABUF_SELFTESTS 34 select SW_SYNC # signaling validation framework (igt/syncobj*) 35 select DRM_I915_SW_FENCE_DEBUG_OBJECTS 36 select DRM_I915_SELFTEST 37 select DRM_I915_DEBUG_RUNTIME_PM 38 select DRM_I915_DEBUG_MMIO 39 default n 40 help 41 Choose this option to turn on extra driver debugging that may affect 42 performance but will catch some internal issues. 43 44 Recommended for driver developers only. 45 46 If in doubt, say "N". 47 48config DRM_I915_DEBUG_MMIO 49 bool "Always insert extra checks around mmio access by default" 50 default n 51 help 52 By default, always enables the extra sanity checks (extra register 53 reads) around every mmio (register) access that will slow the system 54 down. This sets the default value of i915.mmio_debug to -1 and can 55 be overridden at module load. 56 57 Recommended for driver developers only. 58 59 If in doubt, say "N". 60 61config DRM_I915_DEBUG_GEM 62 bool "Insert extra checks into the GEM internals" 63 default n 64 depends on DRM_I915_WERROR 65 help 66 Enable extra sanity checks (including BUGs) along the GEM driver 67 paths that may slow the system down and if hit hang the machine. 68 69 Recommended for driver developers only. 70 71 If in doubt, say "N". 72 73config DRM_I915_ERRLOG_GEM 74 bool "Insert extra logging (very verbose) for common GEM errors" 75 default n 76 depends on DRM_I915_DEBUG_GEM 77 help 78 Enable additional logging that may help track down the cause of 79 principally userspace errors. 80 81 Recommended for driver developers only. 82 83 If in doubt, say "N". 84 85config DRM_I915_TRACE_GEM 86 bool "Insert extra ftrace output from the GEM internals" 87 depends on DRM_I915_DEBUG_GEM 88 select TRACING 89 default n 90 help 91 Enable additional and verbose debugging output that will spam 92 ordinary tests, but may be vital for post-mortem debugging when 93 used with /proc/sys/kernel/ftrace_dump_on_oops 94 95 Recommended for driver developers only. 96 97 If in doubt, say "N". 98 99config DRM_I915_TRACE_GTT 100 bool "Insert extra ftrace output from the GTT internals" 101 depends on DRM_I915_DEBUG_GEM 102 select TRACING 103 default n 104 help 105 Enable additional and verbose debugging output that will spam 106 ordinary tests, but may be vital for post-mortem debugging when 107 used with /proc/sys/kernel/ftrace_dump_on_oops 108 109 Recommended for driver developers only. 110 111 If in doubt, say "N". 112 113config DRM_I915_SW_FENCE_DEBUG_OBJECTS 114 bool "Enable additional driver debugging for fence objects" 115 depends on DRM_I915 116 select DEBUG_OBJECTS 117 default n 118 help 119 Choose this option to turn on extra driver debugging that may affect 120 performance but will catch some internal issues. 121 122 Recommended for driver developers only. 123 124 If in doubt, say "N". 125 126config DRM_I915_SW_FENCE_CHECK_DAG 127 bool "Enable additional driver debugging for detecting dependency cycles" 128 depends on DRM_I915 129 default n 130 help 131 Choose this option to turn on extra driver debugging that may affect 132 performance but will catch some internal issues. 133 134 Recommended for driver developers only. 135 136 If in doubt, say "N". 137 138config DRM_I915_DEBUG_GUC 139 bool "Enable additional driver debugging for GuC" 140 depends on DRM_I915 141 default n 142 help 143 Choose this option to turn on extra driver debugging that may affect 144 performance but will help resolve GuC related issues. 145 146 Recommended for driver developers only. 147 148 If in doubt, say "N". 149 150config DRM_I915_SELFTEST 151 bool "Enable selftests upon driver load" 152 depends on DRM_I915 153 default n 154 select FAULT_INJECTION 155 select PRIME_NUMBERS 156 help 157 Choose this option to allow the driver to perform selftests upon 158 loading; also requires the i915.selftest=1 module parameter. To 159 exit the module after running the selftests (i.e. to prevent normal 160 module initialisation afterwards) use i915.selftest=-1. 161 162 Recommended for driver developers only. 163 164 If in doubt, say "N". 165 166config DRM_I915_SELFTEST_BROKEN 167 bool "Enable broken and dangerous selftests" 168 depends on DRM_I915_SELFTEST 169 depends on BROKEN 170 default n 171 help 172 This option enables the execution of selftests that are "dangerous" 173 and may trigger unintended HW side-effects as they break strict 174 rules given in the HW specification. For science. 175 176 Recommended for masochistic driver developers only. 177 178 If in doubt, say "N". 179 180config DRM_I915_LOW_LEVEL_TRACEPOINTS 181 bool "Enable low level request tracing events" 182 depends on DRM_I915 183 default n 184 help 185 Choose this option to turn on low level request tracing events. 186 This provides the ability to precisely monitor engine utilisation 187 and also analyze the request dependency resolving timeline. 188 189 If in doubt, say "N". 190 191config DRM_I915_DEBUG_VBLANK_EVADE 192 bool "Enable extra debug warnings for vblank evasion" 193 depends on DRM_I915 194 default n 195 help 196 Choose this option to turn on extra debug warnings for the 197 vblank evade mechanism. This gives a warning every time the 198 the deadline allotted for the vblank evade critical section 199 is exceeded, even if there isn't an actual risk of missing 200 the vblank. 201 202 If in doubt, say "N". 203 204config DRM_I915_DEBUG_RUNTIME_PM 205 bool "Enable extra state checking for runtime PM" 206 depends on DRM_I915 207 default n 208 select STACKDEPOT 209 help 210 Choose this option to turn on extra state checking for the 211 runtime PM functionality. This may introduce overhead during 212 driver loading, suspend and resume operations. 213 214 If in doubt, say "N" 215