Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/config/kernel.m4
Version:
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1 dnl # 2 dnl # Default ZFS kernel configuration 3 dnl # 4 AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [ 5 AM_COND_IF([BUILD_LINUX], [ 6 dnl # Setup the kernel build environment. 7 ZFS_AC_KERNEL 8 ZFS_AC_QAT 9 10 dnl # Sanity checks for module building and CONFIG_* defines 11 ZFS_AC_KERNEL_CONFIG_DEFINED 12 ZFS_AC_MODULE_SYMVERS 13 14 dnl # Sequential ZFS_LINUX_TRY_COMPILE tests 15 ZFS_AC_KERNEL_FPU_HEADER 16 ZFS_AC_KERNEL_OBJTOOL_HEADER 17 ZFS_AC_KERNEL_WAIT_QUEUE_ENTRY_T 18 ZFS_AC_KERNEL_MISC_MINOR 19 ZFS_AC_KERNEL_DECLARE_EVENT_CLASS 20 21 dnl # Parallel ZFS_LINUX_TEST_SRC / ZFS_LINUX_TEST_RESULT tests 22 ZFS_AC_KERNEL_TEST_SRC 23 ZFS_AC_KERNEL_TEST_RESULT 24 25 AS_IF([test "$LINUX_OBJ" != "$LINUX"], [ 26 KERNEL_MAKE="$KERNEL_MAKE O=$LINUX_OBJ" 27 ]) 28 29 AC_SUBST(KERNEL_MAKE) 30 ]) 31 ]) 32 33 dnl # 34 dnl # Generate and compile all of the kernel API test cases to determine 35 dnl # which interfaces are available. By invoking the kernel build system 36 dnl # only once the compilation can be done in parallel significantly 37 dnl # speeding up the process. 38 dnl # 39 AC_DEFUN([ZFS_AC_KERNEL_TEST_SRC], [ 40 ZFS_AC_KERNEL_SRC_OBJTOOL 41 ZFS_AC_KERNEL_SRC_GLOBAL_PAGE_STATE 42 ZFS_AC_KERNEL_SRC_ACCESS_OK_TYPE 43 ZFS_AC_KERNEL_SRC_PDE_DATA 44 ZFS_AC_KERNEL_SRC_FALLOCATE 45 ZFS_AC_KERNEL_SRC_FADVISE 46 ZFS_AC_KERNEL_SRC_GENERIC_FADVISE 47 ZFS_AC_KERNEL_SRC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE 48 ZFS_AC_KERNEL_SRC_RWSEM 49 ZFS_AC_KERNEL_SRC_SCHED 50 ZFS_AC_KERNEL_SRC_USLEEP_RANGE 51 ZFS_AC_KERNEL_SRC_KMEM_CACHE 52 ZFS_AC_KERNEL_SRC_KVMALLOC 53 ZFS_AC_KERNEL_SRC_VMALLOC_PAGE_KERNEL 54 ZFS_AC_KERNEL_SRC_WAIT 55 ZFS_AC_KERNEL_SRC_INODE_TIMES 56 ZFS_AC_KERNEL_SRC_INODE_LOCK 57 ZFS_AC_KERNEL_SRC_GROUP_INFO_GID 58 ZFS_AC_KERNEL_SRC_RW 59 ZFS_AC_KERNEL_SRC_TIMER_SETUP 60 ZFS_AC_KERNEL_SRC_SUPER_USER_NS 61 ZFS_AC_KERNEL_SRC_PROC_OPERATIONS 62 ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS 63 ZFS_AC_KERNEL_SRC_BIO 64 ZFS_AC_KERNEL_SRC_BLKDEV 65 ZFS_AC_KERNEL_SRC_BLK_QUEUE 66 ZFS_AC_KERNEL_SRC_GENHD_FLAGS 67 ZFS_AC_KERNEL_SRC_REVALIDATE_DISK 68 ZFS_AC_KERNEL_SRC_GET_DISK_RO 69 ZFS_AC_KERNEL_SRC_GENERIC_READLINK_GLOBAL 70 ZFS_AC_KERNEL_SRC_DISCARD_GRANULARITY 71 ZFS_AC_KERNEL_SRC_INODE_OWNER_OR_CAPABLE 72 ZFS_AC_KERNEL_SRC_XATTR 73 ZFS_AC_KERNEL_SRC_ACL 74 ZFS_AC_KERNEL_SRC_INODE_GETATTR 75 ZFS_AC_KERNEL_SRC_INODE_SET_FLAGS 76 ZFS_AC_KERNEL_SRC_INODE_SET_IVERSION 77 ZFS_AC_KERNEL_SRC_SHOW_OPTIONS 78 ZFS_AC_KERNEL_SRC_FILE_INODE 79 ZFS_AC_KERNEL_SRC_FILE_DENTRY 80 ZFS_AC_KERNEL_SRC_FSYNC 81 ZFS_AC_KERNEL_SRC_AIO_FSYNC 82 ZFS_AC_KERNEL_SRC_EVICT_INODE 83 ZFS_AC_KERNEL_SRC_DIRTY_INODE 84 ZFS_AC_KERNEL_SRC_SHRINKER 85 ZFS_AC_KERNEL_SRC_MKDIR 86 ZFS_AC_KERNEL_SRC_LOOKUP_FLAGS 87 ZFS_AC_KERNEL_SRC_CREATE 88 ZFS_AC_KERNEL_SRC_PERMISSION 89 ZFS_AC_KERNEL_SRC_GET_LINK 90 ZFS_AC_KERNEL_SRC_PUT_LINK 91 ZFS_AC_KERNEL_SRC_TMPFILE 92 ZFS_AC_KERNEL_SRC_AUTOMOUNT 93 ZFS_AC_KERNEL_SRC_ENCODE_FH_WITH_INODE 94 ZFS_AC_KERNEL_SRC_COMMIT_METADATA 95 ZFS_AC_KERNEL_SRC_CLEAR_INODE 96 ZFS_AC_KERNEL_SRC_SETATTR_PREPARE 97 ZFS_AC_KERNEL_SRC_INSERT_INODE_LOCKED 98 ZFS_AC_KERNEL_SRC_DENTRY 99 ZFS_AC_KERNEL_SRC_DENTRY_ALIAS_D_U 100 ZFS_AC_KERNEL_SRC_TRUNCATE_SETSIZE 101 ZFS_AC_KERNEL_SRC_SECURITY_INODE 102 ZFS_AC_KERNEL_SRC_FST_MOUNT 103 ZFS_AC_KERNEL_SRC_BDI 104 ZFS_AC_KERNEL_SRC_SET_NLINK 105 ZFS_AC_KERNEL_SRC_SGET 106 ZFS_AC_KERNEL_SRC_LSEEK_EXECUTE 107 ZFS_AC_KERNEL_SRC_VFS_FILEMAP_DIRTY_FOLIO 108 ZFS_AC_KERNEL_SRC_VFS_READ_FOLIO 109 ZFS_AC_KERNEL_SRC_VFS_GETATTR 110 ZFS_AC_KERNEL_SRC_VFS_FSYNC_2ARGS 111 ZFS_AC_KERNEL_SRC_VFS_ITERATE 112 ZFS_AC_KERNEL_SRC_VFS_DIRECT_IO 113 ZFS_AC_KERNEL_SRC_VFS_READPAGES 114 ZFS_AC_KERNEL_SRC_VFS_SET_PAGE_DIRTY_NOBUFFERS 115 ZFS_AC_KERNEL_SRC_VFS_RW_ITERATE 116 ZFS_AC_KERNEL_SRC_VFS_GENERIC_WRITE_CHECKS 117 ZFS_AC_KERNEL_SRC_VFS_IOV_ITER 118 ZFS_AC_KERNEL_SRC_KMAP_ATOMIC_ARGS 119 ZFS_AC_KERNEL_SRC_FOLLOW_DOWN_ONE 120 ZFS_AC_KERNEL_SRC_MAKE_REQUEST_FN 121 ZFS_AC_KERNEL_SRC_GENERIC_IO_ACCT 122 ZFS_AC_KERNEL_SRC_FPU 123 ZFS_AC_KERNEL_SRC_FMODE_T 124 ZFS_AC_KERNEL_SRC_KUIDGID_T 125 ZFS_AC_KERNEL_SRC_KUID_HELPERS 126 ZFS_AC_KERNEL_SRC_RENAME 127 ZFS_AC_KERNEL_SRC_CURRENT_TIME 128 ZFS_AC_KERNEL_SRC_USERNS_CAPABILITIES 129 ZFS_AC_KERNEL_SRC_IN_COMPAT_SYSCALL 130 ZFS_AC_KERNEL_SRC_KTIME 131 ZFS_AC_KERNEL_SRC_TOTALRAM_PAGES_FUNC 132 ZFS_AC_KERNEL_SRC_TOTALHIGH_PAGES 133 ZFS_AC_KERNEL_SRC_KSTRTOUL 134 ZFS_AC_KERNEL_SRC_PERCPU 135 ZFS_AC_KERNEL_SRC_CPU_HOTPLUG 136 ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR_USERNS 137 ZFS_AC_KERNEL_SRC_MKNOD 138 ZFS_AC_KERNEL_SRC_SYMLINK 139 ZFS_AC_KERNEL_SRC_BIO_MAX_SEGS 140 ZFS_AC_KERNEL_SRC_SIGNAL_STOP 141 ZFS_AC_KERNEL_SRC_SIGINFO 142 ZFS_AC_KERNEL_SRC_SYSFS 143 ZFS_AC_KERNEL_SRC_SET_SPECIAL_STATE 144 ZFS_AC_KERNEL_SRC_STANDALONE_LINUX_STDARG 145 ZFS_AC_KERNEL_SRC_PAGEMAP_FOLIO_WAIT_BIT 146 ZFS_AC_KERNEL_SRC_ADD_DISK 147 ZFS_AC_KERNEL_SRC_KTHREAD 148 ZFS_AC_KERNEL_SRC_ZERO_PAGE 149 ZFS_AC_KERNEL_SRC___COPY_FROM_USER_INATOMIC 150 ZFS_AC_KERNEL_SRC_USER_NS_COMMON_INUM 151 ZFS_AC_KERNEL_SRC_IDMAP_MNT_API 152 ZFS_AC_KERNEL_SRC_IATTR_VFSID 153 154 AC_MSG_CHECKING([for available kernel interfaces]) 155 ZFS_LINUX_TEST_COMPILE_ALL([kabi]) 156 AC_MSG_RESULT([done]) 157 ]) 158 159 dnl # 160 dnl # Check results of kernel interface tests. 161 dnl # 162 AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [ 163 ZFS_AC_KERNEL_ACCESS_OK_TYPE 164 ZFS_AC_KERNEL_GLOBAL_PAGE_STATE 165 ZFS_AC_KERNEL_OBJTOOL 166 ZFS_AC_KERNEL_PDE_DATA 167 ZFS_AC_KERNEL_FALLOCATE 168 ZFS_AC_KERNEL_FADVISE 169 ZFS_AC_KERNEL_GENERIC_FADVISE 170 ZFS_AC_KERNEL_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE 171 ZFS_AC_KERNEL_RWSEM 172 ZFS_AC_KERNEL_SCHED 173 ZFS_AC_KERNEL_USLEEP_RANGE 174 ZFS_AC_KERNEL_KMEM_CACHE 175 ZFS_AC_KERNEL_KVMALLOC 176 ZFS_AC_KERNEL_VMALLOC_PAGE_KERNEL 177 ZFS_AC_KERNEL_WAIT 178 ZFS_AC_KERNEL_INODE_TIMES 179 ZFS_AC_KERNEL_INODE_LOCK 180 ZFS_AC_KERNEL_GROUP_INFO_GID 181 ZFS_AC_KERNEL_RW 182 ZFS_AC_KERNEL_TIMER_SETUP 183 ZFS_AC_KERNEL_SUPER_USER_NS 184 ZFS_AC_KERNEL_PROC_OPERATIONS 185 ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS 186 ZFS_AC_KERNEL_BIO 187 ZFS_AC_KERNEL_BLKDEV 188 ZFS_AC_KERNEL_BLK_QUEUE 189 ZFS_AC_KERNEL_GENHD_FLAGS 190 ZFS_AC_KERNEL_REVALIDATE_DISK 191 ZFS_AC_KERNEL_GET_DISK_RO 192 ZFS_AC_KERNEL_GENERIC_READLINK_GLOBAL 193 ZFS_AC_KERNEL_DISCARD_GRANULARITY 194 ZFS_AC_KERNEL_INODE_OWNER_OR_CAPABLE 195 ZFS_AC_KERNEL_XATTR 196 ZFS_AC_KERNEL_ACL 197 ZFS_AC_KERNEL_INODE_GETATTR 198 ZFS_AC_KERNEL_INODE_SET_FLAGS 199 ZFS_AC_KERNEL_INODE_SET_IVERSION 200 ZFS_AC_KERNEL_SHOW_OPTIONS 201 ZFS_AC_KERNEL_FILE_INODE 202 ZFS_AC_KERNEL_FILE_DENTRY 203 ZFS_AC_KERNEL_FSYNC 204 ZFS_AC_KERNEL_AIO_FSYNC 205 ZFS_AC_KERNEL_EVICT_INODE 206 ZFS_AC_KERNEL_DIRTY_INODE 207 ZFS_AC_KERNEL_SHRINKER 208 ZFS_AC_KERNEL_MKDIR 209 ZFS_AC_KERNEL_LOOKUP_FLAGS 210 ZFS_AC_KERNEL_CREATE 211 ZFS_AC_KERNEL_PERMISSION 212 ZFS_AC_KERNEL_GET_LINK 213 ZFS_AC_KERNEL_PUT_LINK 214 ZFS_AC_KERNEL_TMPFILE 215 ZFS_AC_KERNEL_AUTOMOUNT 216 ZFS_AC_KERNEL_ENCODE_FH_WITH_INODE 217 ZFS_AC_KERNEL_COMMIT_METADATA 218 ZFS_AC_KERNEL_CLEAR_INODE 219 ZFS_AC_KERNEL_SETATTR_PREPARE 220 ZFS_AC_KERNEL_INSERT_INODE_LOCKED 221 ZFS_AC_KERNEL_DENTRY 222 ZFS_AC_KERNEL_DENTRY_ALIAS_D_U 223 ZFS_AC_KERNEL_TRUNCATE_SETSIZE 224 ZFS_AC_KERNEL_SECURITY_INODE 225 ZFS_AC_KERNEL_FST_MOUNT 226 ZFS_AC_KERNEL_BDI 227 ZFS_AC_KERNEL_SET_NLINK 228 ZFS_AC_KERNEL_SGET 229 ZFS_AC_KERNEL_LSEEK_EXECUTE 230 ZFS_AC_KERNEL_VFS_FILEMAP_DIRTY_FOLIO 231 ZFS_AC_KERNEL_VFS_READ_FOLIO 232 ZFS_AC_KERNEL_VFS_GETATTR 233 ZFS_AC_KERNEL_VFS_FSYNC_2ARGS 234 ZFS_AC_KERNEL_VFS_ITERATE 235 ZFS_AC_KERNEL_VFS_DIRECT_IO 236 ZFS_AC_KERNEL_VFS_READPAGES 237 ZFS_AC_KERNEL_VFS_SET_PAGE_DIRTY_NOBUFFERS 238 ZFS_AC_KERNEL_VFS_RW_ITERATE 239 ZFS_AC_KERNEL_VFS_GENERIC_WRITE_CHECKS 240 ZFS_AC_KERNEL_VFS_IOV_ITER 241 ZFS_AC_KERNEL_KMAP_ATOMIC_ARGS 242 ZFS_AC_KERNEL_FOLLOW_DOWN_ONE 243 ZFS_AC_KERNEL_MAKE_REQUEST_FN 244 ZFS_AC_KERNEL_GENERIC_IO_ACCT 245 ZFS_AC_KERNEL_FPU 246 ZFS_AC_KERNEL_FMODE_T 247 ZFS_AC_KERNEL_KUIDGID_T 248 ZFS_AC_KERNEL_KUID_HELPERS 249 ZFS_AC_KERNEL_RENAME 250 ZFS_AC_KERNEL_CURRENT_TIME 251 ZFS_AC_KERNEL_USERNS_CAPABILITIES 252 ZFS_AC_KERNEL_IN_COMPAT_SYSCALL 253 ZFS_AC_KERNEL_KTIME 254 ZFS_AC_KERNEL_TOTALRAM_PAGES_FUNC 255 ZFS_AC_KERNEL_TOTALHIGH_PAGES 256 ZFS_AC_KERNEL_KSTRTOUL 257 ZFS_AC_KERNEL_PERCPU 258 ZFS_AC_KERNEL_CPU_HOTPLUG 259 ZFS_AC_KERNEL_GENERIC_FILLATTR_USERNS 260 ZFS_AC_KERNEL_MKNOD 261 ZFS_AC_KERNEL_SYMLINK 262 ZFS_AC_KERNEL_BIO_MAX_SEGS 263 ZFS_AC_KERNEL_SIGNAL_STOP 264 ZFS_AC_KERNEL_SIGINFO 265 ZFS_AC_KERNEL_SYSFS 266 ZFS_AC_KERNEL_SET_SPECIAL_STATE 267 ZFS_AC_KERNEL_STANDALONE_LINUX_STDARG 268 ZFS_AC_KERNEL_PAGEMAP_FOLIO_WAIT_BIT 269 ZFS_AC_KERNEL_ADD_DISK 270 ZFS_AC_KERNEL_KTHREAD 271 ZFS_AC_KERNEL_ZERO_PAGE 272 ZFS_AC_KERNEL___COPY_FROM_USER_INATOMIC 273 ZFS_AC_KERNEL_USER_NS_COMMON_INUM 274 ZFS_AC_KERNEL_IDMAP_MNT_API 275 ZFS_AC_KERNEL_IATTR_VFSID 276 ]) 277 278 dnl # 279 dnl # Detect name used for Module.symvers file in kernel 280 dnl # 281 AC_DEFUN([ZFS_AC_MODULE_SYMVERS], [ 282 modpost=$LINUX/scripts/Makefile.modpost 283 AC_MSG_CHECKING([kernel file name for module symbols]) 284 AS_IF([test "x$enable_linux_builtin" != xyes -a -f "$modpost"], [ 285 AS_IF([grep -q Modules.symvers $modpost], [ 286 LINUX_SYMBOLS=Modules.symvers 287 ], [ 288 LINUX_SYMBOLS=Module.symvers 289 ]) 290 291 AS_IF([test ! -f "$LINUX_OBJ/$LINUX_SYMBOLS"], [ 292 AC_MSG_ERROR([ 293 *** Please make sure the kernel devel package for your distribution 294 *** is installed. If you are building with a custom kernel, make sure 295 *** the kernel is configured, built, and the '--with-linux=PATH' 296 *** configure option refers to the location of the kernel source. 297 ]) 298 ]) 299 ], [ 300 LINUX_SYMBOLS=NONE 301 ]) 302 AC_MSG_RESULT($LINUX_SYMBOLS) 303 AC_SUBST(LINUX_SYMBOLS) 304 ]) 305 306 dnl # 307 dnl # Detect the kernel to be built against 308 dnl # 309 dnl # Most modern Linux distributions have separate locations for bare 310 dnl # source (source) and prebuilt (build) files. Additionally, there are 311 dnl # `source` and `build` symlinks in `/lib/modules/$(KERNEL_VERSION)` 312 dnl # pointing to them. The directory search order is now: 313 dnl # 314 dnl # - `configure` command line values if both `--with-linux` and 315 dnl # `--with-linux-obj` were defined 316 dnl # 317 dnl # - If only `--with-linux` was defined, `--with-linux-obj` is assumed 318 dnl # to have the same value as `--with-linux` 319 dnl # 320 dnl # - If neither `--with-linux` nor `--with-linux-obj` were defined 321 dnl # autodetection is used: 322 dnl # 323 dnl # - `/lib/modules/$(uname -r)/{source,build}` respectively, if exist. 324 dnl # 325 dnl # - If only `/lib/modules/$(uname -r)/build` exists, it is assumed 326 dnl # to be both source and build directory. 327 dnl # 328 dnl # - The first directory in `/lib/modules` with the highest version 329 dnl # number according to `sort -V` which contains both `source` and 330 dnl # `build` symlinks/directories. If module directory contains only 331 dnl # `build` component, it is assumed to be both source and build 332 dnl # directory. 333 dnl # 334 dnl # - Last resort: the first directory matching `/usr/src/kernels/*` 335 dnl # and `/usr/src/linux-*` with the highest version number according 336 dnl # to `sort -V` is assumed to be both source and build directory. 337 dnl # 338 AC_DEFUN([ZFS_AC_KERNEL], [ 339 AC_ARG_WITH([linux], 340 AS_HELP_STRING([--with-linux=PATH], 341 [Path to kernel source]), 342 [kernelsrc="$withval"]) 343 344 AC_ARG_WITH(linux-obj, 345 AS_HELP_STRING([--with-linux-obj=PATH], 346 [Path to kernel build objects]), 347 [kernelbuild="$withval"]) 348 349 AC_MSG_CHECKING([kernel source and build directories]) 350 AS_IF([test -n "$kernelsrc" && test -z "$kernelbuild"], [ 351 kernelbuild="$kernelsrc" 352 ], [test -z "$kernelsrc"], [ 353 AS_IF([test -e "/lib/modules/$(uname -r)/source" && \ 354 test -e "/lib/modules/$(uname -r)/build"], [ 355 src="/lib/modules/$(uname -r)/source" 356 build="/lib/modules/$(uname -r)/build" 357 ], [test -e "/lib/modules/$(uname -r)/build"], [ 358 build="/lib/modules/$(uname -r)/build" 359 src="$build" 360 ], [ 361 src= 362 363 for d in $(ls -1d /lib/modules/* 2>/dev/null | sort -Vr); do 364 if test -e "$d/source" && test -e "$d/build"; then 365 src="$d/source" 366 build="$d/build" 367 break 368 fi 369 370 if test -e "$d/build"; then 371 src="$d/build" 372 build="$d/build" 373 break 374 fi 375 done 376 377 # the least reliable method 378 if test -z "$src"; then 379 src=$(ls -1d /usr/src/kernels/* /usr/src/linux-* \ 380 2>/dev/null | grep -v obj | sort -Vr | head -1) 381 build="$src" 382 fi 383 ]) 384 385 AS_IF([test -n "$src" && test -e "$src"], [ 386 kernelsrc=$(readlink -e "$src") 387 ], [ 388 kernelsrc="[Not found]" 389 ]) 390 AS_IF([test -n "$build" && test -e "$build"], [ 391 kernelbuild=$(readlink -e "$build") 392 ], [ 393 kernelbuild="[Not found]" 394 ]) 395 ], [ 396 AS_IF([test "$kernelsrc" = "NONE"], [ 397 kernsrcver=NONE 398 ]) 399 withlinux=yes 400 ]) 401 402 AC_MSG_RESULT([done]) 403 AC_MSG_CHECKING([kernel source directory]) 404 AC_MSG_RESULT([$kernelsrc]) 405 AC_MSG_CHECKING([kernel build directory]) 406 AC_MSG_RESULT([$kernelbuild]) 407 AS_IF([test ! -d "$kernelsrc" || test ! -d "$kernelbuild"], [ 408 AC_MSG_ERROR([ 409 *** Please make sure the kernel devel package for your distribution 410 *** is installed and then try again. If that fails, you can specify the 411 *** location of the kernel source and build with the '--with-linux=PATH' and 412 *** '--with-linux-obj=PATH' options respectively.]) 413 ]) 414 415 AC_MSG_CHECKING([kernel source version]) 416 utsrelease1=$kernelbuild/include/linux/version.h 417 utsrelease2=$kernelbuild/include/linux/utsrelease.h 418 utsrelease3=$kernelbuild/include/generated/utsrelease.h 419 AS_IF([test -r $utsrelease1 && grep -qF UTS_RELEASE $utsrelease1], [ 420 utsrelease=$utsrelease1 421 ], [test -r $utsrelease2 && grep -qF UTS_RELEASE $utsrelease2], [ 422 utsrelease=$utsrelease2 423 ], [test -r $utsrelease3 && grep -qF UTS_RELEASE $utsrelease3], [ 424 utsrelease=$utsrelease3 425 ]) 426 427 AS_IF([test -n "$utsrelease"], [ 428 kernsrcver=$($AWK '/UTS_RELEASE/ { gsub(/"/, "", $[3]); print $[3] }' $utsrelease) 429 AS_IF([test -z "$kernsrcver"], [ 430 AC_MSG_RESULT([Not found]) 431 AC_MSG_ERROR([ 432 *** Cannot determine kernel version. 433 ]) 434 ]) 435 ], [ 436 AC_MSG_RESULT([Not found]) 437 if test "x$enable_linux_builtin" != xyes; then 438 AC_MSG_ERROR([ 439 *** Cannot find UTS_RELEASE definition. 440 ]) 441 else 442 AC_MSG_ERROR([ 443 *** Cannot find UTS_RELEASE definition. 444 *** Please run 'make prepare' inside the kernel source tree.]) 445 fi 446 ]) 447 448 AC_MSG_RESULT([$kernsrcver]) 449 450 AS_VERSION_COMPARE([$kernsrcver], [$ZFS_META_KVER_MIN], [ 451 AC_MSG_ERROR([ 452 *** Cannot build against kernel version $kernsrcver. 453 *** The minimum supported kernel version is $ZFS_META_KVER_MIN. 454 ]) 455 ]) 456 457 LINUX=${kernelsrc} 458 LINUX_OBJ=${kernelbuild} 459 LINUX_VERSION=${kernsrcver} 460 461 AC_SUBST(LINUX) 462 AC_SUBST(LINUX_OBJ) 463 AC_SUBST(LINUX_VERSION) 464 ]) 465 466 dnl # 467 dnl # Detect the QAT module to be built against, QAT provides hardware 468 dnl # acceleration for data compression: 469 dnl # 470 dnl # https://01.org/intel-quickassist-technology 471 dnl # 472 dnl # 1) Download and install QAT driver from the above link 473 dnl # 2) Start QAT driver in your system: 474 dnl # service qat_service start 475 dnl # 3) Enable QAT in ZFS, e.g.: 476 dnl # ./configure --with-qat=<qat-driver-path>/QAT1.6 477 dnl # make 478 dnl # 4) Set GZIP compression in ZFS dataset: 479 dnl # zfs set compression = gzip <dataset> 480 dnl # 481 dnl # Then the data written to this ZFS pool is compressed by QAT accelerator 482 dnl # automatically, and de-compressed by QAT when read from the pool. 483 dnl # 484 dnl # 1) Get QAT hardware statistics with: 485 dnl # cat /proc/icp_dh895xcc_dev/qat 486 dnl # 2) To disable QAT: 487 dnl # insmod zfs.ko zfs_qat_disable=1 488 dnl # 489 AC_DEFUN([ZFS_AC_QAT], [ 490 AC_ARG_WITH([qat], 491 AS_HELP_STRING([--with-qat=PATH], 492 [Path to qat source]), 493 AS_IF([test "$withval" = "yes"], 494 AC_MSG_ERROR([--with-qat=PATH requires a PATH]), 495 [qatsrc="$withval"])) 496 497 AC_ARG_WITH([qat-obj], 498 AS_HELP_STRING([--with-qat-obj=PATH], 499 [Path to qat build objects]), 500 [qatbuild="$withval"]) 501 502 AS_IF([test ! -z "${qatsrc}"], [ 503 AC_MSG_CHECKING([qat source directory]) 504 AC_MSG_RESULT([$qatsrc]) 505 QAT_SRC="${qatsrc}/quickassist" 506 AS_IF([ test ! -e "$QAT_SRC/include/cpa.h"], [ 507 AC_MSG_ERROR([ 508 *** Please make sure the qat driver package is installed 509 *** and specify the location of the qat source with the 510 *** '--with-qat=PATH' option then try again. Failed to 511 *** find cpa.h in: 512 ${QAT_SRC}/include]) 513 ]) 514 ]) 515 516 AS_IF([test ! -z "${qatsrc}"], [ 517 AC_MSG_CHECKING([qat build directory]) 518 AS_IF([test -z "$qatbuild"], [ 519 qatbuild="${qatsrc}/build" 520 ]) 521 522 AC_MSG_RESULT([$qatbuild]) 523 QAT_OBJ=${qatbuild} 524 AS_IF([ ! test -e "$QAT_OBJ/icp_qa_al.ko" && ! test -e "$QAT_OBJ/qat_api.ko"], [ 525 AC_MSG_ERROR([ 526 *** Please make sure the qat driver is installed then try again. 527 *** Failed to find icp_qa_al.ko or qat_api.ko in: 528 $QAT_OBJ]) 529 ]) 530 531 AC_SUBST(QAT_SRC) 532 AC_SUBST(QAT_OBJ) 533 534 AC_DEFINE(HAVE_QAT, 1, 535 [qat is enabled and existed]) 536 ]) 537 538 dnl # 539 dnl # Detect the name used for the QAT Module.symvers file. 540 dnl # 541 AS_IF([test ! -z "${qatsrc}"], [ 542 AC_MSG_CHECKING([qat file for module symbols]) 543 QAT_SYMBOLS=$QAT_SRC/lookaside/access_layer/src/Module.symvers 544 545 AS_IF([test -r $QAT_SYMBOLS], [ 546 AC_MSG_RESULT([$QAT_SYMBOLS]) 547 AC_SUBST(QAT_SYMBOLS) 548 ],[ 549 AC_MSG_ERROR([ 550 *** Please make sure the qat driver is installed then try again. 551 *** Failed to find Module.symvers in: 552 $QAT_SYMBOLS 553 ]) 554 ]) 555 ]) 556 ]) 557 558 dnl # 559 dnl # ZFS_LINUX_CONFTEST_H 560 dnl # 561 AC_DEFUN([ZFS_LINUX_CONFTEST_H], [ 562 test -d build/$2 || mkdir -p build/$2 563 cat - <<_ACEOF >build/$2/$2.h 564 $1 565 _ACEOF 566 ]) 567 568 dnl # 569 dnl # ZFS_LINUX_CONFTEST_C 570 dnl # 571 AC_DEFUN([ZFS_LINUX_CONFTEST_C], [ 572 test -d build/$2 || mkdir -p build/$2 573 cat confdefs.h - <<_ACEOF >build/$2/$2.c 574 $1 575 _ACEOF 576 ]) 577 578 dnl # 579 dnl # ZFS_LINUX_CONFTEST_MAKEFILE 580 dnl # 581 dnl # $1 - test case name 582 dnl # $2 - add to top-level Makefile 583 dnl # $3 - additional build flags 584 dnl # 585 AC_DEFUN([ZFS_LINUX_CONFTEST_MAKEFILE], [ 586 test -d build || mkdir -p build 587 test -d build/$1 || mkdir -p build/$1 588 589 file=build/$1/Makefile 590 591 dnl # Example command line to manually build source. 592 cat - <<_ACEOF >$file 593 # Example command line to manually build source 594 # make modules -C $LINUX_OBJ $ARCH_UM M=$PWD/build/$1 595 596 ccflags-y := -Werror $FRAME_LARGER_THAN 597 _ACEOF 598 599 dnl # Additional custom CFLAGS as requested. 600 m4_ifval($3, [echo "ccflags-y += $3" >>$file], []) 601 602 dnl # Test case source 603 echo "obj-m := $1.o" >>$file 604 605 AS_IF([test "x$2" = "xyes"], [echo "obj-m += $1/" >>build/Makefile], []) 606 ]) 607 608 dnl # 609 dnl # ZFS_LINUX_TEST_PROGRAM(C)([PROLOGUE], [BODY]) 610 dnl # 611 m4_define([ZFS_LINUX_TEST_PROGRAM], [ 612 #include <linux/module.h> 613 $1 614 615 int 616 main (void) 617 { 618 $2 619 ; 620 return 0; 621 } 622 623 MODULE_DESCRIPTION("conftest"); 624 MODULE_AUTHOR(ZFS_META_AUTHOR); 625 MODULE_VERSION(ZFS_META_VERSION "-" ZFS_META_RELEASE); 626 MODULE_LICENSE($3); 627 ]) 628 629 dnl # 630 dnl # ZFS_LINUX_TEST_REMOVE 631 dnl # 632 dnl # Removes the specified test source and results. 633 dnl # 634 AC_DEFUN([ZFS_LINUX_TEST_REMOVE], [ 635 test -d build/$1 && rm -Rf build/$1 636 test -f build/Makefile && sed '/$1/d' build/Makefile 637 ]) 638 639 dnl # 640 dnl # ZFS_LINUX_COMPILE 641 dnl # 642 dnl # $1 - build dir 643 dnl # $2 - test command 644 dnl # $3 - pass command 645 dnl # $4 - fail command 646 dnl # $5 - set KBUILD_MODPOST_NOFINAL='yes' 647 dnl # $6 - set KBUILD_MODPOST_WARN='yes' 648 dnl # 649 dnl # Used internally by ZFS_LINUX_TEST_{COMPILE,MODPOST} 650 dnl # 651 AC_DEFUN([ZFS_LINUX_COMPILE], [ 652 AC_ARG_VAR([KERNEL_CC], [C compiler for 653 building kernel modules]) 654 AC_ARG_VAR([KERNEL_LD], [Linker for 655 building kernel modules]) 656 AC_ARG_VAR([KERNEL_LLVM], [Binary option to 657 build kernel modules with LLVM/CLANG toolchain]) 658 AC_TRY_COMMAND([ 659 KBUILD_MODPOST_NOFINAL="$5" KBUILD_MODPOST_WARN="$6" 660 make modules -k -j$TEST_JOBS ${KERNEL_CC:+CC=$KERNEL_CC} 661 ${KERNEL_LD:+LD=$KERNEL_LD} ${KERNEL_LLVM:+LLVM=$KERNEL_LLVM} 662 CONFIG_MODULES=y CFLAGS_MODULE=-DCONFIG_MODULES 663 -C $LINUX_OBJ $ARCH_UM M=$PWD/$1 >$1/build.log 2>&1]) 664 AS_IF([AC_TRY_COMMAND([$2])], [$3], [$4]) 665 ]) 666 667 dnl # 668 dnl # ZFS_LINUX_TEST_COMPILE 669 dnl # 670 dnl # Perform a full compile excluding the final modpost phase. 671 dnl # 672 AC_DEFUN([ZFS_LINUX_TEST_COMPILE], [ 673 ZFS_LINUX_COMPILE([$2], [test -f $2/build.log], [ 674 mv $2/Makefile $2/Makefile.compile.$1 675 mv $2/build.log $2/build.log.$1 676 ],[ 677 AC_MSG_ERROR([ 678 *** Unable to compile test source to determine kernel interfaces.]) 679 ], [yes], []) 680 ]) 681 682 dnl # 683 dnl # ZFS_LINUX_TEST_MODPOST 684 dnl # 685 dnl # Perform a full compile including the modpost phase. This may 686 dnl # be an incremental build if the objects have already been built. 687 dnl # 688 AC_DEFUN([ZFS_LINUX_TEST_MODPOST], [ 689 ZFS_LINUX_COMPILE([$2], [test -f $2/build.log], [ 690 mv $2/Makefile $2/Makefile.modpost.$1 691 cat $2/build.log >>build/build.log.$1 692 ],[ 693 AC_MSG_ERROR([ 694 *** Unable to modpost test source to determine kernel interfaces.]) 695 ], [], [yes]) 696 ]) 697 698 dnl # 699 dnl # Perform the compilation of the test cases in two phases. 700 dnl # 701 dnl # Phase 1) attempt to build the object files for all of the tests 702 dnl # defined by the ZFS_LINUX_TEST_SRC macro. But do not 703 dnl # perform the final modpost stage. 704 dnl # 705 dnl # Phase 2) disable all tests which failed the initial compilation, 706 dnl # then invoke the final modpost step for the remaining tests. 707 dnl # 708 dnl # This allows us efficiently build the test cases in parallel while 709 dnl # remaining resilient to build failures which are expected when 710 dnl # detecting the available kernel interfaces. 711 dnl # 712 dnl # The maximum allowed parallelism can be controlled by setting the 713 dnl # TEST_JOBS environment variable. Otherwise, it default to $(nproc). 714 dnl # 715 AC_DEFUN([ZFS_LINUX_TEST_COMPILE_ALL], [ 716 dnl # Phase 1 - Compilation only, final linking is skipped. 717 ZFS_LINUX_TEST_COMPILE([$1], [build]) 718 719 dnl # 720 dnl # Phase 2 - When building external modules disable test cases 721 dnl # which failed to compile and invoke modpost to verify the 722 dnl # final linking. 723 dnl # 724 dnl # Test names suffixed with '_license' call modpost independently 725 dnl # to ensure that a single incompatibility does not result in the 726 dnl # modpost phase exiting early. This check is not performed on 727 dnl # every symbol since the majority are compatible and doing so 728 dnl # would significantly slow down this phase. 729 dnl # 730 dnl # When configuring for builtin (--enable-linux-builtin) 731 dnl # fake the linking step artificially create the expected .ko 732 dnl # files for tests which did compile. This is required for 733 dnl # kernels which do not have loadable module support or have 734 dnl # not yet been built. 735 dnl # 736 AS_IF([test "x$enable_linux_builtin" = "xno"], [ 737 for dir in $(awk '/^obj-m/ { print [$]3 }' \ 738 build/Makefile.compile.$1); do 739 name=${dir%/} 740 AS_IF([test -f build/$name/$name.o], [ 741 AS_IF([test "${name##*_}" = "license"], [ 742 ZFS_LINUX_TEST_MODPOST([$1], 743 [build/$name]) 744 echo "obj-n += $dir" >>build/Makefile 745 ], [ 746 echo "obj-m += $dir" >>build/Makefile 747 ]) 748 ], [ 749 echo "obj-n += $dir" >>build/Makefile 750 ]) 751 done 752 753 ZFS_LINUX_TEST_MODPOST([$1], [build]) 754 ], [ 755 for dir in $(awk '/^obj-m/ { print [$]3 }' \ 756 build/Makefile.compile.$1); do 757 name=${dir%/} 758 AS_IF([test -f build/$name/$name.o], [ 759 touch build/$name/$name.ko 760 ]) 761 done 762 ]) 763 ]) 764 765 dnl # 766 dnl # ZFS_LINUX_TEST_SRC 767 dnl # 768 dnl # $1 - name 769 dnl # $2 - global 770 dnl # $3 - source 771 dnl # $4 - extra cflags 772 dnl # $5 - check license-compatibility 773 dnl # 774 dnl # Check if the test source is buildable at all and then if it is 775 dnl # license compatible. 776 dnl # 777 dnl # N.B because all of the test cases are compiled in parallel they 778 dnl # must never depend on the results of previous tests. Each test 779 dnl # needs to be entirely independent. 780 dnl # 781 AC_DEFUN([ZFS_LINUX_TEST_SRC], [ 782 ZFS_LINUX_CONFTEST_C([ZFS_LINUX_TEST_PROGRAM([[$2]], [[$3]], 783 [["Dual BSD/GPL"]])], [$1]) 784 ZFS_LINUX_CONFTEST_MAKEFILE([$1], [yes], [$4]) 785 786 AS_IF([ test -n "$5" ], [ 787 ZFS_LINUX_CONFTEST_C([ZFS_LINUX_TEST_PROGRAM( 788 [[$2]], [[$3]], [[$5]])], [$1_license]) 789 ZFS_LINUX_CONFTEST_MAKEFILE([$1_license], [yes], [$4]) 790 ]) 791 ]) 792 793 dnl # 794 dnl # ZFS_LINUX_TEST_RESULT 795 dnl # 796 dnl # $1 - name of a test source (ZFS_LINUX_TEST_SRC) 797 dnl # $2 - run on success (valid .ko generated) 798 dnl # $3 - run on failure (unable to compile) 799 dnl # 800 AC_DEFUN([ZFS_LINUX_TEST_RESULT], [ 801 AS_IF([test -d build/$1], [ 802 AS_IF([test -f build/$1/$1.ko], [$2], [$3]) 803 ], [ 804 AC_MSG_ERROR([ 805 *** No matching source for the "$1" test, check that 806 *** both the test source and result macros refer to the same name. 807 ]) 808 ]) 809 ]) 810 811 dnl # 812 dnl # ZFS_LINUX_TEST_ERROR 813 dnl # 814 dnl # Generic error message which can be used when none of the expected 815 dnl # kernel interfaces were detected. 816 dnl # 817 AC_DEFUN([ZFS_LINUX_TEST_ERROR], [ 818 AC_MSG_ERROR([ 819 *** None of the expected "$1" interfaces were detected. 820 *** This may be because your kernel version is newer than what is 821 *** supported, or you are using a patched custom kernel with 822 *** incompatible modifications. 823 *** 824 *** ZFS Version: $ZFS_META_ALIAS 825 *** Compatible Kernels: $ZFS_META_KVER_MIN - $ZFS_META_KVER_MAX 826 ]) 827 ]) 828 829 dnl # 830 dnl # ZFS_LINUX_TEST_RESULT_SYMBOL 831 dnl # 832 dnl # Like ZFS_LINUX_TEST_RESULT except ZFS_CHECK_SYMBOL_EXPORT is called to 833 dnl # verify symbol exports, unless --enable-linux-builtin was provided to 834 dnl # configure. 835 dnl # 836 AC_DEFUN([ZFS_LINUX_TEST_RESULT_SYMBOL], [ 837 AS_IF([ ! test -f build/$1/$1.ko], [ 838 $5 839 ], [ 840 AS_IF([test "x$enable_linux_builtin" != "xyes"], [ 841 ZFS_CHECK_SYMBOL_EXPORT([$2], [$3], [$4], [$5]) 842 ], [ 843 $4 844 ]) 845 ]) 846 ]) 847 848 dnl # 849 dnl # ZFS_LINUX_COMPILE_IFELSE 850 dnl # 851 AC_DEFUN([ZFS_LINUX_COMPILE_IFELSE], [ 852 ZFS_LINUX_TEST_REMOVE([conftest]) 853 854 m4_ifvaln([$1], [ZFS_LINUX_CONFTEST_C([$1], [conftest])]) 855 m4_ifvaln([$5], [ZFS_LINUX_CONFTEST_H([$5], [conftest])], 856 [ZFS_LINUX_CONFTEST_H([], [conftest])]) 857 858 ZFS_LINUX_CONFTEST_MAKEFILE([conftest], [no], 859 [m4_ifvaln([$5], [-I$PWD/build/conftest], [])]) 860 ZFS_LINUX_COMPILE([build/conftest], [$2], [$3], [$4], [], []) 861 ]) 862 863 dnl # 864 dnl # ZFS_LINUX_TRY_COMPILE 865 dnl # 866 dnl # $1 - global 867 dnl # $2 - source 868 dnl # $3 - run on success (valid .ko generated) 869 dnl # $4 - run on failure (unable to compile) 870 dnl # 871 dnl # When configuring as builtin (--enable-linux-builtin) for kernels 872 dnl # without loadable module support (CONFIG_MODULES=n) only the object 873 dnl # file is created. See ZFS_LINUX_TEST_COMPILE_ALL for details. 874 dnl # 875 AC_DEFUN([ZFS_LINUX_TRY_COMPILE], [ 876 AS_IF([test "x$enable_linux_builtin" = "xyes"], [ 877 ZFS_LINUX_COMPILE_IFELSE( 878 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 879 [[ZFS_META_LICENSE]])], 880 [test -f build/conftest/conftest.o], [$3], [$4]) 881 ], [ 882 ZFS_LINUX_COMPILE_IFELSE( 883 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 884 [[ZFS_META_LICENSE]])], 885 [test -f build/conftest/conftest.ko], [$3], [$4]) 886 ]) 887 ]) 888 889 dnl # 890 dnl # ZFS_CHECK_SYMBOL_EXPORT 891 dnl # 892 dnl # Check if a symbol is exported on not by consulting the symbols 893 dnl # file, or optionally the source code. 894 dnl # 895 AC_DEFUN([ZFS_CHECK_SYMBOL_EXPORT], [ 896 grep -q -E '[[[:space:]]]$1[[[:space:]]]' \ 897 $LINUX_OBJ/$LINUX_SYMBOLS 2>/dev/null 898 rc=$? 899 if test $rc -ne 0; then 900 export=0 901 for file in $2; do 902 grep -q -E "EXPORT_SYMBOL.*($1)" \ 903 "$LINUX/$file" 2>/dev/null 904 rc=$? 905 if test $rc -eq 0; then 906 export=1 907 break; 908 fi 909 done 910 if test $export -eq 0; then : 911 $4 912 else : 913 $3 914 fi 915 else : 916 $3 917 fi 918 ]) 919 920 dnl # 921 dnl # ZFS_LINUX_TRY_COMPILE_SYMBOL 922 dnl # 923 dnl # Like ZFS_LINUX_TRY_COMPILER except ZFS_CHECK_SYMBOL_EXPORT is called 924 dnl # to verify symbol exports, unless --enable-linux-builtin was provided 925 dnl # to configure. 926 dnl # 927 AC_DEFUN([ZFS_LINUX_TRY_COMPILE_SYMBOL], [ 928 ZFS_LINUX_TRY_COMPILE([$1], [$2], [rc=0], [rc=1]) 929 if test $rc -ne 0; then : 930 $6 931 else 932 if test "x$enable_linux_builtin" != xyes; then 933 ZFS_CHECK_SYMBOL_EXPORT([$3], [$4], [rc=0], [rc=1]) 934 fi 935 if test $rc -ne 0; then : 936 $6 937 else : 938 $5 939 fi 940 fi 941 ]) 942 943 dnl # 944 dnl # ZFS_LINUX_TRY_COMPILE_HEADER 945 dnl # like ZFS_LINUX_TRY_COMPILE, except the contents conftest.h are 946 dnl # provided via the fifth parameter 947 dnl # 948 AC_DEFUN([ZFS_LINUX_TRY_COMPILE_HEADER], [ 949 AS_IF([test "x$enable_linux_builtin" = "xyes"], [ 950 ZFS_LINUX_COMPILE_IFELSE( 951 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 952 [[ZFS_META_LICENSE]])], 953 [test -f build/conftest/conftest.o], [$3], [$4], [$5]) 954 ], [ 955 ZFS_LINUX_COMPILE_IFELSE( 956 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 957 [[ZFS_META_LICENSE]])], 958 [test -f build/conftest/conftest.ko], [$3], [$4], [$5]) 959 ]) 960 ]) 961 962 dnl # 963 dnl # AS_VERSION_COMPARE_LE 964 dnl # like AS_VERSION_COMPARE_LE, but runs $3 if (and only if) $1 <= $2 965 dnl # AS_VERSION_COMPARE_LE (version-1, version-2, [action-if-less-or-equal], [action-if-greater]) 966 dnl # 967 AC_DEFUN([AS_VERSION_COMPARE_LE], [ 968 AS_VERSION_COMPARE([$1], [$2], [$3], [$3], [$4]) 969 ]) 970 971 dnl # 972 dnl # ZFS_LINUX_REQUIRE_API 973 dnl # like ZFS_LINUX_TEST_ERROR, except only fails if the kernel is 974 dnl # at least some specified version. 975 dnl # 976 AC_DEFUN([ZFS_LINUX_REQUIRE_API], [ 977 AS_VERSION_COMPARE_LE([$2], [$kernsrcver], [ 978 AC_MSG_ERROR([ 979 *** None of the expected "$1" interfaces were detected. This 980 *** interface is expected for kernels version "$2" and above. 981 *** This may be because your kernel version is newer than what is 982 *** supported, or you are using a patched custom kernel with 983 *** incompatible modifications. Newer kernels may have incompatible 984 *** APIs. 985 *** 986 *** ZFS Version: $ZFS_META_ALIAS 987 *** Compatible Kernels: $ZFS_META_KVER_MIN - $ZFS_META_KVER_MAX 988 ]) 989 ], [ 990 AC_MSG_RESULT(no) 991 ]) 992 ])
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