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 I2C_CHARDEV 25 select STACKDEPOT 26 select DRM_DP_AUX_CHARDEV 27 select X86_MSR # used by igt/pm_rpm 28 select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks) 29 select DRM_DEBUG_MM if DRM=y 30 select DRM_EXPORT_FOR_TESTS if m 31 select DRM_DEBUG_SELFTEST 32 select DMABUF_SELFTESTS 33 select SW_SYNC # signaling validation framework (igt/syncobj*) 34 select DRM_I915_SW_FENCE_DEBUG_OBJECTS 35 select DRM_I915_SELFTEST 36 select DRM_I915_DEBUG_RUNTIME_PM 37 select DRM_I915_DEBUG_MMIO 38 default n 39 help 40 Choose this option to turn on extra driver debugging that may affect 41 performance but will catch some internal issues. 42 43 Recommended for driver developers only. 44 45 If in doubt, say "N". 46 47config DRM_I915_DEBUG_MMIO 48 bool "Always insert extra checks around mmio access by default" 49 default n 50 help 51 By default, always enables the extra sanity checks (extra register 52 reads) around every mmio (register) access that will slow the system 53 down. This sets the default value of i915.mmio_debug to -1 and can 54 be overridden at module load. 55 56 Recommended for driver developers only. 57 58 If in doubt, say "N". 59 60config DRM_I915_DEBUG_GEM 61 bool "Insert extra checks into the GEM internals" 62 default n 63 depends on DRM_I915_WERROR 64 help 65 Enable extra sanity checks (including BUGs) along the GEM driver 66 paths that may slow the system down and if hit hang the machine. 67 68 Recommended for driver developers only. 69 70 If in doubt, say "N". 71 72config DRM_I915_ERRLOG_GEM 73 bool "Insert extra logging (very verbose) for common GEM errors" 74 default n 75 depends on DRM_I915_DEBUG_GEM 76 help 77 Enable additional logging that may help track down the cause of 78 principally userspace errors. 79 80 Recommended for driver developers only. 81 82 If in doubt, say "N". 83 84config DRM_I915_TRACE_GEM 85 bool "Insert extra ftrace output from the GEM internals" 86 depends on DRM_I915_DEBUG_GEM 87 select TRACING 88 default n 89 help 90 Enable additional and verbose debugging output that will spam 91 ordinary tests, but may be vital for post-mortem debugging when 92 used with /proc/sys/kernel/ftrace_dump_on_oops 93 94 Recommended for driver developers only. 95 96 If in doubt, say "N". 97 98config DRM_I915_TRACE_GTT 99 bool "Insert extra ftrace output from the GTT internals" 100 depends on DRM_I915_DEBUG_GEM 101 select TRACING 102 default n 103 help 104 Enable additional and verbose debugging output that will spam 105 ordinary tests, but may be vital for post-mortem debugging when 106 used with /proc/sys/kernel/ftrace_dump_on_oops 107 108 Recommended for driver developers only. 109 110 If in doubt, say "N". 111 112config DRM_I915_SW_FENCE_DEBUG_OBJECTS 113 bool "Enable additional driver debugging for fence objects" 114 depends on DRM_I915 115 select DEBUG_OBJECTS 116 default n 117 help 118 Choose this option to turn on extra driver debugging that may affect 119 performance but will catch some internal issues. 120 121 Recommended for driver developers only. 122 123 If in doubt, say "N". 124 125config DRM_I915_SW_FENCE_CHECK_DAG 126 bool "Enable additional driver debugging for detecting dependency cycles" 127 depends on DRM_I915 128 default n 129 help 130 Choose this option to turn on extra driver debugging that may affect 131 performance but will catch some internal issues. 132 133 Recommended for driver developers only. 134 135 If in doubt, say "N". 136 137config DRM_I915_DEBUG_GUC 138 bool "Enable additional driver debugging for GuC" 139 depends on DRM_I915 140 default n 141 help 142 Choose this option to turn on extra driver debugging that may affect 143 performance but will help resolve GuC related issues. 144 145 Recommended for driver developers only. 146 147 If in doubt, say "N". 148 149config DRM_I915_SELFTEST 150 bool "Enable selftests upon driver load" 151 depends on DRM_I915 152 default n 153 select DRM_EXPORT_FOR_TESTS if m 154 select FAULT_INJECTION 155 select PRIME_NUMBERS 156 select CRC32 157 help 158 Choose this option to allow the driver to perform selftests upon 159 loading; also requires the i915.selftest=1 module parameter. To 160 exit the module after running the selftests (i.e. to prevent normal 161 module initialisation afterwards) use i915.selftest=-1. 162 163 Recommended for driver developers only. 164 165 If in doubt, say "N". 166 167config DRM_I915_SELFTEST_BROKEN 168 bool "Enable broken and dangerous selftests" 169 depends on DRM_I915_SELFTEST 170 depends on BROKEN 171 default n 172 help 173 This option enables the execution of selftests that are "dangerous" 174 and may trigger unintended HW side-effects as they break strict 175 rules given in the HW specification. For science. 176 177 Recommended for masochistic driver developers only. 178 179 If in doubt, say "N". 180 181config DRM_I915_LOW_LEVEL_TRACEPOINTS 182 bool "Enable low level request tracing events" 183 depends on DRM_I915 184 default n 185 help 186 Choose this option to turn on low level request tracing events. 187 This provides the ability to precisely monitor engine utilisation 188 and also analyze the request dependency resolving timeline. 189 190 If in doubt, say "N". 191 192config DRM_I915_DEBUG_VBLANK_EVADE 193 bool "Enable extra debug warnings for vblank evasion" 194 depends on DRM_I915 195 default n 196 help 197 Choose this option to turn on extra debug warnings for the 198 vblank evade mechanism. This gives a warning every time the 199 the deadline allotted for the vblank evade critical section 200 is exceeded, even if there isn't an actual risk of missing 201 the vblank. 202 203 If in doubt, say "N". 204 205config DRM_I915_DEBUG_RUNTIME_PM 206 bool "Enable extra state checking for runtime PM" 207 depends on DRM_I915 208 default n 209 select STACKDEPOT 210 help 211 Choose this option to turn on extra state checking for the 212 runtime PM functionality. This may introduce overhead during 213 driver loading, suspend and resume operations. 214 215 If in doubt, say "N" 216