1# 2# Mach Operating System 3# Copyright (c) 1986 Carnegie-Mellon University 4# Copyright 2001-2018 Apple Inc. 5# 6# All rights reserved. The CMU software License Agreement 7# specifies the terms and conditions for use and redistribution. 8# 9####################################################################### 10# 11# Master machine independent configuration file. 12# 13# Specific configuration files are created based on this and 14# the machine specific master file using the doconf script. 15# 16# Any changes to the master configuration files will affect all 17# other configuration files based upon it. 18# 19####################################################################### 20# 21# To build a configuration, execute "doconf <configuration>." 22# Configurations are specified in the "Configurations:" section 23# of the MASTER and MASTER.* files as follows: 24# 25# <configuration> = [ <attribute0> <attribute1> ... <attributeN> ] 26# 27# Lines in the MASTER and MASTER.* files are selected based on 28# the attribute selector list, found in a comment at the end of 29# the line. This is a list of attributes separated by commas. 30# The "!" operator selects the line if none of the attributes are 31# specified. 32# 33# For example: 34# 35# <foo,bar> selects a line if "foo" or "bar" are specified. 36# <!foo,bar> selects a line if neither "foo" nor "bar" is 37# specified. 38# 39# Lines with no attributes specified are selected for all 40# configurations. 41# 42####################################################################### 43# 44# SYSTEM SIZE CONFIGURATION (select exactly one) 45# 46# xlarge = extra large scale system configuration 47# large = large scale system configuration 48# medium = medium scale system configuration 49# small = small scale system configuration 50# xsmall = extra small scale system configuration 51# bsmall = special extra small scale system configuration 52# 53####################################################################### 54# 55 56options INET # # <inet> 57 58options MACH # Standard Mach features # <mach> 59options LOOP # loopback support # <loop> 60options VLAN # # <vlan> 61options BOND # # <bond> 62options IF_FAKE # # <if_fake> 63options IF_HEADLESS # # <if_headless> 64options IF_REDIRECT # # <if_redirect> 65options AH_ALL_CRYPTO # AH all crypto algs # <ah_all_crypto> 66options PF # Packet Filter # <pf> 67options PF_ECN # PF use ECN marking # <pf_ecn> 68options PFLOG # PF log interface # <pflog> 69options MEASURE_BW # interface bandwidth measurement # <measure_bw> 70options DUMMYNET # dummynet support # <dummynet> 71options TRAFFIC_MGT # traffic management support # <traffic_mgt> 72options MULTICAST # Internet Protocol Class-D $ 73options IFNET_INPUT_SANITY_CHK # allow dlil/ifnet input sanity check # <ifnet_input_chk> 74options MULTIPATH # Multipath domain # <multipath> 75options MPTCP # Multipath TCP # <mptcp> 76options SYSV_SEM # SVID semaphores # <sysv_sem> 77options SYSV_MSG # SVID messages # <sysv_msg> 78options SYSV_SHM # SVID shared mem # <sysv_shm> 79options PSYNCH # pthread synch # <psynch> 80options FLOW_DIVERT # <flow_divert> 81options NECP # <necp> 82options CONTENT_FILTER # # <content_filter> 83options PACKET_MANGLER # # <packet_mangler> 84options REMOTE_VIF # # <remote_vif> 85options SKYWALK # # <skywalk> 86options CONFIG_NEXUS_USER_PIPE # # <config_nexus_user_pipe> 87options CONFIG_NEXUS_KERNEL_PIPE # # <config_nexus_kernel_pipe> 88options CONFIG_NEXUS_FLOWSWITCH # # <config_nexus_flowswitch> 89options CONFIG_NEXUS_NETIF # # <config_nexus_netif> 90options CONFIG_MBUF_MCACHE # mbufs use mcache # <config_mbuf_mcache> 91options KCTL_TEST # kernel control test # <kctl_test> 92 93# secure_kernel - secure kernel from user programs 94options SECURE_KERNEL # <secure_kernel> 95 96# 97# 4.4 general kernel 98# 99options SOCKETS # socket support # <inet> 100options DIAGNOSTIC # diagnostics # <diagnostic> 101options PROFILE # kernel profiling # <profile> 102options SENDFILE # sendfile # <sendfile> 103options NETWORKING # networking layer # <inet> 104options CONFIG_FSE # file system events # <config_fse> 105options CONFIG_IMAGEBOOT # local image boot # <config_imageboot> 106options CONFIG_IMAGEBOOT_IMG4 # authenticate image with AppleImage4 # <config_imageboot_img4> 107options CONFIG_IMAGEBOOT_CHUNKLIST # authenticate image with a chunk list # <config_imageboot_chunklist> 108 109options CONFIG_WORKLOOP_DEBUG # <config_workloop_debug> 110 111# 112# 4.4 filesystems 113# 114options MOCKFS # Boot from an executable # <mockfs> 115options FIFO # fifo support # <fifo> 116options FDESC # fdesc_fs support # <fdesc> 117options DEVFS # devfs support # <devfs> 118options ROUTEFS # routefs support # <routefs> 119options NULLFS # nullfs support # <nullfs> 120options BINDFS # bindfs support # <bindfs> 121options FS_COMPRESSION # fs compression # <fs_compression> 122options CONFIG_DEV_KMEM # /dev/kmem device for reading KVA # <config_dev_kmem> 123 124# 125# file system features 126# 127options QUOTA # file system quotas # <quota> 128options NAMEDSTREAMS # named stream vnop support # <namedstreams> 129options CONFIG_APPLEDOUBLE # apple double support # <config_appledouble> 130options CONFIG_VOLFS # volfs path support (legacy) # <config_volfs> 131options CONFIG_IMGSRC_ACCESS # source of imageboot dmg # <config_imgsrc_access> 132options CONFIG_TRIGGERS # trigger vnodes # <config_triggers> 133options CONFIG_EXT_RESOLVER # e.g. memberd # <config_ext_resolver> 134options CONFIG_SEARCHFS # searchfs syscall support # <config_searchfs> 135options CONFIG_MNT_SUID # allow suid binaries # <config_mnt_suid> 136options CONFIG_MNT_ROOTSNAP # allow rooting from snapshot # <config_mnt_rootsnap> 137options CONFIG_ROSV_STARTUP # allow read-only system volume startup # <config_rosv_startup> 138options CONFIG_FIRMLINKS # support "firmlinks" # <config_firmlinks> 139options CONFIG_MOUNT_VM # mount VM volume on startup # <config_mount_vm> 140options CONFIG_MOUNT_PREBOOTRECOVERY # mount Preboot and/or Recovery volume on startup # <config_mount_prebootrecovery> 141options CONFIG_DATALESS_FILES # support dataless file materialization # <config_dataless_files> 142options CONFIG_BASESYSTEMROOT # mount BaseSystem as initial root filesystem on some kinds of startup # <config_basesystemroot> 143options CONFIG_UNION_MOUNTS # support union mounts # <config_union_mounts> 144options CONFIG_FILE_LEASES # local file leasing support # <config_file_leases> 145 146# 147# VFS debugging 148# 149options CONFIG_IOCOUNT_TRACE # enable vnode's iocount tracing # <config_iocount_trace> 150 151# NFS support 152# 153options NFSSERVER # Be an NFS server # <nfsserver> 154options CONFIG_NETBOOT # network booting # <config_netboot> 155 156# 157# Machine Independent Apple Features 158# 159profile # build a profiling kernel # <profile> 160 161# 162# IPv6 Support 163# 164options IPSEC # IP security # <ipsec> 165options IPSEC_ESP # IP security # <ipsec> 166 167pseudo-device gif 1 # <gif> 168pseudo-device dummy 2 # <dummy> 169pseudo-device stf 1 # <stf> 170 171options CRYPTO # <ipsec,crypto> 172options CRYPTO_SHA2 # <crypto_sha2> 173options ENCRYPTED_SWAP # <encrypted_swap> 174 175options CONFIG_IMG4 # <config_img4> 176 177options ZLIB # inflate/deflate support # <zlib> 178options ZLIBC # inflate/deflate support # <zlibc> 179 180options IF_BRIDGE # <if_bridge> 181 182# 183# configurable kernel event related resources 184# 185options CONFIG_KN_HASHSIZE=64 # <medium,large,xlarge> 186options CONFIG_KN_HASHSIZE=48 # <small,xsmall> 187options CONFIG_KN_HASHSIZE=20 # <bsmall> 188 189# 190# configurable vfs related resources 191# CONFIG_VNODES - used to pre allocate vnode related resources 192# CONFIG_NC_HASH - name cache hash table allocation 193# CONFIG_VFS_NAMES - name strings 194# 195# 263168 magic number for medium CONFIG_VNODES is based on memory 196# Number vnodes is (memsize/64k) + 1024 197# This is the calculation that is used by launchd in tiger 198# we are clipping the max based on 16G 199# ie ((16*1024*1024*1024)/(64 *1024)) + 1024 = 263168; 200 201options CONFIG_VNODES=263168 # <large,xlarge> 202options CONFIG_VNODES=263168 # <medium> 203options CONFIG_VNODES=10240 # <small> 204options CONFIG_VNODES=750 # <bsmall> 205 206options CONFIG_NC_HASH=5120 # <large,xlarge> 207options CONFIG_NC_HASH=4096 # <medium> 208options CONFIG_NC_HASH=2048 # <small,xsmall> 209options CONFIG_NC_HASH=1024 # <bsmall> 210 211options CONFIG_VFS_NAMES=5120 # <large,xlarge> 212options CONFIG_VFS_NAMES=4096 # <medium> 213options CONFIG_VFS_NAMES=3072 # <small,xsmall> 214options CONFIG_VFS_NAMES=2048 # <bsmall> 215 216options CONFIG_MAX_CLUSTERS=8 # <xlarge,large,medium> 217options CONFIG_MAX_CLUSTERS=4 # <small,xsmall,bsmall> 218 219# 220# configurable options for minumum number of buffers for kernel memory 221# 222options CONFIG_MIN_NBUF=256 # <medium,large,xlarge> 223options CONFIG_MIN_NBUF=128 # <small> 224options CONFIG_MIN_NBUF=80 # <xsmall> 225options CONFIG_MIN_NBUF=64 # <bsmall> 226 227options CONFIG_MIN_NIOBUF=128 # <medium,large,xlarge> 228options CONFIG_MIN_NIOBUF=64 # <xsmall,small> 229options CONFIG_MIN_NIOBUF=32 # <bsmall> 230 231# 232# set maximum space used for packet buffers 233# 234options CONFIG_NMBCLUSTERS="((1024 * 1024) / MCLBYTES)" # <large,xlarge> 235options CONFIG_NMBCLUSTERS="((1024 * 512) / MCLBYTES)" # <medium> 236options CONFIG_NMBCLUSTERS="((1024 * 256) / MCLBYTES)" # <bsmall,xsmall,small> 237 238# 239# Configure size of TCP hash table 240# 241options CONFIG_TCBHASHSIZE=4096 # <medium,large,xlarge> 242options CONFIG_TCBHASHSIZE=128 # <xsmall,small,bsmall> 243 244# 245# configurable async IO options 246# CONFIG_AIO_MAX - system wide limit of async IO requests. 247# CONFIG_AIO_PROCESS_MAX - process limit of async IO requests. 248# CONFIG_AIO_THREAD_COUNT - number of async IO worker threads created. 249# 250options CONFIG_AIO_MAX=360 # <xlarge> 251options CONFIG_AIO_MAX=180 # <large> 252options CONFIG_AIO_MAX=90 # <medium> 253options CONFIG_AIO_MAX=45 # <small> 254options CONFIG_AIO_MAX=20 # <xsmall> 255options CONFIG_AIO_MAX=10 # <bsmall> 256 257options CONFIG_AIO_PROCESS_MAX=64 # <xlarge> 258options CONFIG_AIO_PROCESS_MAX=32 # <large> 259options CONFIG_AIO_PROCESS_MAX=16 # <medium> 260options CONFIG_AIO_PROCESS_MAX=12 # <small> 261options CONFIG_AIO_PROCESS_MAX=8 # <xsmall> 262options CONFIG_AIO_PROCESS_MAX=4 # <bsmall> 263 264options CONFIG_AIO_THREAD_COUNT=16 # <xlarge> 265options CONFIG_AIO_THREAD_COUNT=8 # <large> 266options CONFIG_AIO_THREAD_COUNT=4 # <medium> 267options CONFIG_AIO_THREAD_COUNT=3 # <small> 268options CONFIG_AIO_THREAD_COUNT=2 # <xsmall,bsmall> 269 270options CONFIG_MAXVIFS=32 # <medium,large,xlarge> 271options CONFIG_MAXVIFS=16 # <small,xsmall> 272options CONFIG_MAXVIFS=2 # <bsmall> 273 274options CONFIG_MFCTBLSIZ=256 # <medium,large,xlarge> 275options CONFIG_MFCTBLSIZ=128 # <small,xsmall> 276options CONFIG_MFCTBLSIZ=16 # <bsmall> 277 278# 279# configurable kernel message buffer size 280# 281options CONFIG_MSG_BSIZE_REL=16384 # <msgb_small> 282options CONFIG_MSG_BSIZE_DEV=131072 # <msgb_small> 283options CONFIG_MSG_BSIZE_REL=131072 # <msgb_large> 284options CONFIG_MSG_BSIZE_DEV=131072 # <msgb_large> 285options CONFIG_MSG_BSIZE=CONFIG_MSG_BSIZE_REL # <!development,debug> 286options CONFIG_MSG_BSIZE=CONFIG_MSG_BSIZE_DEV # <development,debug> 287 288# 289# maximum size of the per-process Mach IPC table 290# 291options CONFIG_IPC_TABLE_ENTRIES_SIZE_MAX=3145728 # 3M == 131072 entries # <bsmall,small,xsmall> 292options CONFIG_IPC_TABLE_ENTRIES_SIZE_MAX=7340032 # 7M == 305834 entries # <medium,large,xlarge> 293options CONFIG_IPC_TABLE_REQUEST_SIZE_MAX=1048576 # 1M == 65536 requests # <bsmall,small,xsmall> 294options CONFIG_IPC_TABLE_REQUEST_SIZE_MAX=2097152 # 2M == 131072 requests # <medium,large,xlarge> 295 296# 297# maximum copyout size for IPC debugging tools 298# 299options CONFIG_IPC_KERNEL_MAP_SIZE=32 # 32M # <bsmall,small,xsmall> 300options CONFIG_IPC_KERNEL_MAP_SIZE=64 # 64M # <medium,large,xlarge> 301 302# 303# configurable kernel - use these options to strip strings from panic 304# and printf calls. 305# no_printf_str - saves around 45K of kernel footprint. 306# 307options CONFIG_NO_PRINTF_STRINGS # <no_printf_str> 308options CONFIG_NO_KPRINTF_STRINGS # <no_kprintf_str> 309 310# support vsprintf (deprecated in favor of vsnprintf) 311options CONFIG_VSPRINTF # <vsprintf> 312 313# 314# configurable kernel - general switch to say we are building for an 315# embedded device 316# 317options CONFIG_EMBEDDED # <config_embedded> 318 319 320# Compile XNU with SPTM support. This option should be used mutually exclusively 321# with the config_pmap_ppl option 322options CONFIG_SPTM # <config_sptm> 323 324 325# Enable support for commmunication with exclaves. Requires SPTM support. 326options CONFIG_EXCLAVES # <config_exclaves> 327 328# Compile XNU with PPL support. 329options CONFIG_PMAP_PPL # <config_pmap_ppl> 330 331options NOS_ARM_ASM # <nos_arm_asm> 332options NOS_ARM_PMAP # <nos_arm_pmap> 333 334# support dynamic signing of code 335# 336options CONFIG_DYNAMIC_CODE_SIGNING # <dynamic_codesigning> 337 338# enforce library validation on all processes. 339# 340options CONFIG_ENFORCE_LIBRARY_VALIDATION # <config_library_validation> 341 342# support loading a second static trust cache 343# 344options CONFIG_SECOND_STATIC_TRUST_CACHE # <second_static_trust_cache> 345 346# support supplemental signatures 347# 348options CONFIG_SUPPLEMENTAL_SIGNATURES # <config_supplemental_signatures> 349 350# 351# code decryption... used on embedded for app protection, DSMOS on desktop 352# 353options CONFIG_CODE_DECRYPTION # <config_code_decryption> 354 355# 356# User Content Protection, used on embedded 357# 358options CONFIG_PROTECT # <config_protect> 359 360#allow write-protection of key page 361options CONFIG_KEYPAGE_WP # <config_keypage_wp> 362 363# 364# allow vm_pageout_scan to dynamically adjust its priority based on priorities of waiters 365# 366options CONFIG_VPS_DYNAMIC_PRIO # <vps_dynamic_prio> 367 368# 369# enable per-process memory priority tracking 370# 371options CONFIG_MEMORYSTATUS # <memorystatus> 372 373options CONFIG_DEFERRED_RECLAIM # <config_deferred_reclaim> 374 375# 376# enable jetsam - used on embedded 377# 378options CONFIG_JETSAM # <jetsam> 379 380# 381# enable new wait queue implementation stats / debugging 382# 383options CONFIG_WAITQ_STATS # <config_waitq_stats> 384 385# 386# enable freezing of suspended processes - used on embedded 387# 388options CONFIG_FREEZE # <freeze> 389 390options CHECK_CS_VALIDATION_BITMAP # <config_cs_validation_bitmap> 391 392# 393# enable physical writes accounting 394# 395options CONFIG_PHYS_WRITE_ACCT # <phys_write_acct> 396 397# 398# enable detection of file cache thrashing - used on platforms with 399# dynamic VM compression enabled 400# 401options CONFIG_PHANTOM_CACHE # <phantom_cache> 402 403# 404# enable detection of anonymous pages staying unmodified after first use 405# - used on platforms with dynamic VM compression enabled 406# 407options CONFIG_TRACK_UNMODIFIED_ANON_PAGES # <track_unmodified_anon_pages> 408 409# 410# memory pressure event support 411# 412options VM_PRESSURE_EVENTS # <vm_pressure_events> 413 414options CONFIG_SECLUDED_MEMORY # <config_secluded_memory> 415 416# 417# Ledger features 418# 419options CONFIG_LEDGER_INTERVAL_MAX # <config_ledger_interval_max> 420 421# 422# I/O Scheduling 423# 424options CONFIG_IOSCHED # <config_iosched> 425 426# 427# Accounting for I/O usage 428# 429options CONFIG_IO_ACCOUNTING # <config_io_accounting> 430 431# 432# Enable inheritance of importance through specially marked mach ports and for file locks 433# For now debug is enabled wherever inheritance is 434# 435options IMPORTANCE_INHERITANCE # <importance_inheritance> 436options IMPORTANCE_TRACE # <importance_trace> 437options IMPORTANCE_DEBUG # <importance_debug> 438 439options CONFIG_TELEMETRY # <config_telemetry> 440 441options CONFIG_PROC_UUID_POLICY # <config_proc_uuid_policy> 442 443# 444# ECC data logging 445# 446options CONFIG_ECC_LOGGING # <config_ecc_logging> 447 448# 449# Application core dumps dumped synchronously by xnu 450# 451options CONFIG_COREDUMP # <config_coredump> 452 453# 454# Application core dumps dumped in userland via corpses 455# 456options CONFIG_UCOREDUMP # <config_ucoredump> 457 458# 459# Vnode guards 460# 461options CONFIG_VNGUARD # <config_vnguard> 462 463# 464# Paravirtualization 465# 466options CONFIG_PV_TICKET # <config_pv_ticket> 467 468# 469# Enable extended VM address space and user heap segregation 470# 471options CONFIG_MAP_RANGES # <config_map_ranges> 472 473# 474# Ethernet (ARP) 475# 476pseudo-device ether # <networking,inet> 477# 478# Network loopback device 479# 480pseudo-device loop # <networking,inet> 481# 482# UCB pseudo terminal service 483# 484pseudo-device pty 512 init pty_init # <xlarge> 485pseudo-device pty 256 init pty_init # <large> 486pseudo-device pty 128 init pty_init # <medium> 487pseudo-device pty 48 init pty_init # <small> 488pseudo-device pty 16 init pty_init # <xsmall> 489pseudo-device pty 8 init pty_init # <bsmall> 490# 491# Cloning pseudo terminal service 492# 493pseudo-device ptmx 1 init ptmx_init 494 495# 496# memory device 497pseudo-device mdevdevice 1 init mdevinit 498 499# 500# 501# packet filter device 502# 503pseudo-device bpfilter 4 init bpf_init # <networking,inet> 504 505# 506# fsevents device 507pseudo-device fsevents 1 init fsevents_init # <config_fse> 508 509pseudo-device random 1 init random_init 510pseudo-device dtrace 1 init dtrace_init # <config_dtrace> 511pseudo-device helper 1 init helper_init # <config_dtrace> 512pseudo-device lockstat 1 init lockstat_init # <config_dtrace> 513pseudo-device lockprof 1 init lockprof_init # <config_dtrace> 514pseudo-device sdt 1 init sdt_init # <config_dtrace> 515pseudo-device systrace 1 init systrace_init # <config_dtrace> 516pseudo-device fbt 1 init fbt_init # <config_dtrace> 517pseudo-device profile_prvd 1 init profile_init # <config_dtrace> 518 519# monotonic devices 520pseudo-device monotonic 1 init mt_dev_init # <config_cpu_counters> 521 522# 523# IOKit configuration options 524# 525 526options HIBERNATION # system hibernation # <hibernation> 527options IOKITCPP # C++ implementation # <iokitcpp> 528options IOKITSTATS # IOKit statistics # <iokitstats> 529options IOTRACKING # IOKit tracking # <iotracking> 530options CONFIG_SLEEP # # <config_sleep> 531options CONFIG_MAX_THREADS=500 # IOConfigThread threads 532options NO_KEXTD # <no_kextd> 533options NO_KERNEL_HID # <no_kernel_hid> 534 535# 536# Libkern configuration options 537# 538 539options LIBKERNCPP # C++ implementation # <libkerncpp> 540options CONFIG_BLOCKS # Blocks runtime # <config_blocks> 541options CONFIG_KXLD # kxld/runtime linking of kexts # <config_kxld> 542options CONFIG_KEC_FIPS # Kernel External Components for FIPS compliance (KEC_FIPS) # <config_kec_fips> 543 544# Note that when adding this config option to an architecture, one MUST 545# add the architecture to the preprocessor test at the beginning of 546# libkern/kmod/cplus_{start.c,stop.c}. 547options CONFIG_STATIC_CPPINIT # Static library initializes kext cpp runtime # <config_static_cppinit> 548 549# 550# libsa configuration options 551# 552 553# CONFIG_KEXT_BASEMENT - alloc post boot loaded kexts after prelinked kexts 554# 555options CONFIG_KEXT_BASEMENT # # <config_kext_basement> 556 557# 558# Persona Management 559# 560options CONFIG_PERSONAS # Persona management # <config_personas> 561options PERSONA_DEBUG # Persona debugging # <persona_debug> 562 563# 564# security configuration options 565# 566 567options CONFIG_MACF # Mandatory Access Control Framework # <config_macf> 568options CONFIG_MACF_SOCKET_SUBSET # MAC socket subest (no labels) # <config_macf> 569#options CONFIG_MACF_DEBUG # debug # <config_macf> 570 571options CONFIG_AUDIT # Kernel auditing # <config_audit> 572 573options CONFIG_ARCADE # Arcade validation support # <config_arcade> 574 575options CONFIG_SETUID # setuid/setgid support # <config_setuid> 576 577options CONFIG_SECURE_BSD_ROOT # secure BSD root # <config_secure_bsd_root> 578 579options CONFIG_KAS_INFO # kas_info support # <config_kas_info> 580 581options CONFIG_PROC_RESOURCE_LIMITS # Per process limits for resources like file descriptors and mach ports # <config_proc_resource_limits> 582 583# 584# MACH configuration options. 585# 586 587# 588# This defines configuration options that are normally used only during 589# kernel code development and debugging. They add run-time error checks or 590# statistics gathering, which will slow down the system 591# 592########################################################## 593# 594# MACH_ASSERT controls the assert() and ASSERT() macros, used to verify the 595# consistency of various algorithms in the kernel. The performance impact 596# of this option is significant. 597# 598options MACH_ASSERT # # <mach_assert> 599options MACH_VM_DEBUG # # <debug> 600options CONFIG_ZLEAKS # Live zone leak debugging # <zleaks> 601options CONFIG_VOUCHER_DEPRECATED # Enable deprecated voucher managers # <config_voucher_deprecated> 602 603# 604# CONFIG_DEBUGGER_FOR_ZONE_INFO restricts zone info so that it is only 605# available when the kernel is being debugged. 606# 607options CONFIG_DEBUGGER_FOR_ZONE_INFO # <debugger_for_zone_info> 608# 609# MACH_LDEBUG controls the internal consistency checks and 610# data gathering in the locking package. This also enables a debug-only 611# version of simple-locks on uniprocessor machines. The code size and 612# performance impact of this option is significant. 613# 614options MACH_LDEBUG # # <debug> 615 616# 617# configuration option for full, partial, or no kernel debug event tracing 618# 619options KDEBUG # kernel tracing # <kdebug> 620options IST_KDEBUG # limited tracing # <ist_kdebug> 621options NO_KDEBUG # no kernel tracing # <no_kdebug> 622 623# 624# CONFIG_DTRACE enables code needed to support DTrace. Currently this is 625# only used for delivery of traps/interrupts to DTrace. 626# 627options CONFIG_DTRACE # # <config_dtrace> 628 629options LOCK_STATS # # <lock_stats> 630 631# kernel performance tracing 632options KPERF # <kperf> 633 634options CONFIG_CPU_COUNTERS # <config_cpu_counters> 635 636options CONFIG_PERVASIVE_CPI # <config_pervasive_cpi> 637options CONFIG_PERVASIVE_ENERGY # <config_pervasive_energy> 638 639options CONFIG_IOTRACE # Physical IO tracing # <config_iotrace> 640 641options PGO # <pgo> 642 643# DEVELOPMENT define for development builds 644options DEVELOPMENT # dev kernel # <development> 645 646# DEBUG kernel 647options DEBUG # general debugging code # <debug> 648 649# RELEASE define for release builds 650options RELEASE # <release> 651 652options MACH_BSD # BSD subsystem on top of Mach # <mach_bsd> 653options IOKIT # # <iokit> 654 655# 656# configurable kernel related resources (CONFIG_THREAD_MAX needs to stay in 657# sync with bsd/conf/MASTER until we fix the config system... todo XXX 658# 659options CONFIG_THREAD_MAX=2560 # <medium,large,xlarge> 660options CONFIG_THREAD_MAX=1536 # <small,xsmall> 661options CONFIG_THREAD_MAX=1024 # <bsmall> 662 663options CONFIG_TASK_MAX=1024 # <medium,large,xlarge> 664options CONFIG_TASK_MAX=768 # <small,> 665options CONFIG_TASK_MAX=512 # <xsmall,bsmall> 666 667# 668# Minimum zone map size: 115 MB 669# 670options CONFIG_ZONE_MAP_MIN=120586240 # <xsmall,bsmall,small,medium,large,xlarge> 671 672# vc_progress_white - make the progress gear white instead of black 673options CONFIG_VC_PROGRESS_WHITE # <vc_progress_white> 674 675# 676# Timeshare scheduler implementations 677# 678options CONFIG_SCHED_TIMESHARE_CORE # <config_sched_timeshare_core> 679options CONFIG_CLUTCH # <config_clutch> 680options CONFIG_SCHED_AUTO_JOIN # <config_sched_auto_join> 681options CONFIG_SCHED_RT_ALLOW # <config_sched_rt_allow> 682 683options CONFIG_SCHED_IDLE_IN_PLACE # <config_sched_idle_in_place> 684options CONFIG_SCHED_SFI # <config_sched_sfi> 685options CONFIG_SCHED_DEFERRED_AST # <config_sched_deferred_ast> 686 687options CONFIG_PREADOPT_TG # <config_preadopt_tg> 688options CONFIG_PREADOPT_TG_DEBUG # <config_preadopt_tg_debug> 689 690options CONFIG_SCHED_SMT # <config_sched_smt> 691 692# This is overridden by the board configuration's HAS_FAST_CNTVCT. 693options CONFIG_SKIP_PRECISE_USER_KERNEL_TIME # <config_skip_precise_user_kernel_time> 694 695# 696# Switch to disable cpu, wakeup and high memory watermark monitors 697# 698options CONFIG_NOMONITORS # <config_nomonitors> 699 700options MACH_KDP # KDP # <mach_kdp> 701options CONFIG_SERIAL_KDP # KDP over serial # <config_serial_kdp> 702options CONFIG_KDP_INTERACTIVE_DEBUGGING # <kdp_interactive_debugging> 703options CONFIG_KDP_COREDUMP_ENCRYPTION # Support for encrypting kernel coredumps # <config_kdp_coredump_encryption> 704 705options CONFIG_TASKWATCH 706options CONFIG_USER_NOTIFICATION # <config_user_notification> 707# 708# Kernel Power On Self Tests 709# 710options CONFIG_XNUPOST # <config_xnupost> 711 712# 713# Kernel proc reference instrumentation 714# 715options PROC_REF_DEBUG # <proc_ref_debug> 716 717# 718# Kernel Voucher Attr Manager for Activity Trace 719# 720options CONFIG_ATM # <config_atm> 721 722# Group related tasks together into coalitions 723options CONFIG_COALITIONS # <config_coalitions> 724 725# Enable support for sysdiagnose notifications 726options CONFIG_SYSDIAGNOSE # <config_sysdiagnose> 727 728# Configurable Security Restrictions 729options CONFIG_CSR # <config_csr> 730options CONFIG_CSR_FROM_DT # <config_csr_from_dt> 731 732# Enable collection of IO Compression statistics 733options CONFIG_IO_COMPRESSION_STATS # <config_io_compression_stats> 734 735# 736# Console options 737# 738options SERIAL_CONSOLE # bi-directional serial over UART 739options VIDEO_CONSOLE # uni-directional output over framebuffer 740 741# 742# Syscall options 743# 744options CONFIG_REQUIRES_U32_MUNGING # incoming U32 argument structures must be munged to match U64 # <config_requires_u32_munging> 745 746# 747# copyout() instrumentation 748# 749options COPYOUT_SHIM # Shim for copyout memory analysis via kext #<copyout_shim> 750 751# 752# Enable hardware correlation of mach absolute time 753# across intel/arm boundary 754options CONFIG_MACH_BRIDGE_SEND_TIME # # <config_mach_bridge_send_time> 755options CONFIG_MACH_BRIDGE_RECV_TIME # # <config_mach_bridge_recv_time> 756 757options CONFIG_QUIESCE_COUNTER # Support for _COMM_PAGE_CPU_QUIESCENT_COUNTER # <config_quiesce_counter> 758options CONFIG_ARM_PFZ # Support for PFZ on ARM # <config_arm_pfz> 759 760# 761# Sanitizers 762# 763options CONFIG_KASAN # <config_kasan> 764options CONFIG_UBSAN # <config_ubsan> 765 766options CONFIG_KCOV # <config_kcov> 767options CONFIG_KSANCOV # <config_ksancov> 768options CONFIG_STKSZ # <config_stksz> 769 770# dark boot support 771options CONFIG_DARKBOOT # <config_darkboot> 772 773# support for tracking service port labels for stackshots/debugging 774options CONFIG_SERVICE_PORT_INFO # <config_service_port_info> 775 776# support for processes delaying idle sleep for pending IO 777options CONFIG_DELAY_IDLE_SLEEP # <config_delay_idle_sleep> 778 779# support for storing a 64-bit user supplied value in the proc structure 780options CONFIG_PROC_UDATA_STORAGE # <config_proc_udata_storage> 781 782pseudo-device ksancov 1 init ksancov_init_dev # <config_ksancov> 783 784# Debug instrumentation for statistics and catching of code that 785# leaves interrupts masked or preemption disabled for an excessive 786# period of time. 787options SCHED_HYGIENE_DEBUG # <sched_hygiene_debug> 788 789# support for system call rejection/tracing 790options CONFIG_DEBUG_SYSCALL_REJECTION # <config_debug_syscall_rejection> 791 792# Extensible panic log support 793options CONFIG_EXT_PANICLOG # <config_ext_paniclog> 794 795# support for collecting statistics on task suspension 796options CONFIG_TASK_SUSPEND_STATS # <config_task_suspend_stats> 797