1dnl # 2dnl # Default ZFS kernel configuration 3dnl # 4AC_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 33dnl # 34dnl # Generate and compile all of the kernel API test cases to determine 35dnl # which interfaces are available. By invoking the kernel build system 36dnl # only once the compilation can be done in parallel significantly 37dnl # speeding up the process. 38dnl # 39AC_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_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE 46 ZFS_AC_KERNEL_SRC_RWSEM 47 ZFS_AC_KERNEL_SRC_SCHED 48 ZFS_AC_KERNEL_SRC_USLEEP_RANGE 49 ZFS_AC_KERNEL_SRC_KMEM_CACHE 50 ZFS_AC_KERNEL_SRC_KVMALLOC 51 ZFS_AC_KERNEL_SRC_VMALLOC_PAGE_KERNEL 52 ZFS_AC_KERNEL_SRC_WAIT 53 ZFS_AC_KERNEL_SRC_INODE_TIMES 54 ZFS_AC_KERNEL_SRC_INODE_LOCK 55 ZFS_AC_KERNEL_SRC_GROUP_INFO_GID 56 ZFS_AC_KERNEL_SRC_RW 57 ZFS_AC_KERNEL_SRC_TIMER_SETUP 58 ZFS_AC_KERNEL_SRC_SUPER_USER_NS 59 ZFS_AC_KERNEL_SRC_PROC_OPERATIONS 60 ZFS_AC_KERNEL_SRC_BLOCK_DEVICE_OPERATIONS 61 ZFS_AC_KERNEL_SRC_BIO 62 ZFS_AC_KERNEL_SRC_BLKDEV 63 ZFS_AC_KERNEL_SRC_BLK_QUEUE 64 ZFS_AC_KERNEL_SRC_GENHD_FLAGS 65 ZFS_AC_KERNEL_SRC_REVALIDATE_DISK 66 ZFS_AC_KERNEL_SRC_GET_DISK_RO 67 ZFS_AC_KERNEL_SRC_GENERIC_READLINK_GLOBAL 68 ZFS_AC_KERNEL_SRC_DISCARD_GRANULARITY 69 ZFS_AC_KERNEL_SRC_INODE_OWNER_OR_CAPABLE 70 ZFS_AC_KERNEL_SRC_XATTR 71 ZFS_AC_KERNEL_SRC_ACL 72 ZFS_AC_KERNEL_SRC_INODE_GETATTR 73 ZFS_AC_KERNEL_SRC_INODE_SET_FLAGS 74 ZFS_AC_KERNEL_SRC_INODE_SET_IVERSION 75 ZFS_AC_KERNEL_SRC_SHOW_OPTIONS 76 ZFS_AC_KERNEL_SRC_FILE_INODE 77 ZFS_AC_KERNEL_SRC_FILE_DENTRY 78 ZFS_AC_KERNEL_SRC_FSYNC 79 ZFS_AC_KERNEL_SRC_AIO_FSYNC 80 ZFS_AC_KERNEL_SRC_EVICT_INODE 81 ZFS_AC_KERNEL_SRC_DIRTY_INODE 82 ZFS_AC_KERNEL_SRC_SHRINKER 83 ZFS_AC_KERNEL_SRC_MKDIR 84 ZFS_AC_KERNEL_SRC_LOOKUP_FLAGS 85 ZFS_AC_KERNEL_SRC_CREATE 86 ZFS_AC_KERNEL_SRC_PERMISSION 87 ZFS_AC_KERNEL_SRC_GET_LINK 88 ZFS_AC_KERNEL_SRC_PUT_LINK 89 ZFS_AC_KERNEL_SRC_TMPFILE 90 ZFS_AC_KERNEL_SRC_AUTOMOUNT 91 ZFS_AC_KERNEL_SRC_ENCODE_FH_WITH_INODE 92 ZFS_AC_KERNEL_SRC_COMMIT_METADATA 93 ZFS_AC_KERNEL_SRC_CLEAR_INODE 94 ZFS_AC_KERNEL_SRC_SETATTR_PREPARE 95 ZFS_AC_KERNEL_SRC_INSERT_INODE_LOCKED 96 ZFS_AC_KERNEL_SRC_DENTRY 97 ZFS_AC_KERNEL_SRC_TRUNCATE_SETSIZE 98 ZFS_AC_KERNEL_SRC_SECURITY_INODE 99 ZFS_AC_KERNEL_SRC_FST_MOUNT 100 ZFS_AC_KERNEL_SRC_BDI 101 ZFS_AC_KERNEL_SRC_SET_NLINK 102 ZFS_AC_KERNEL_SRC_SGET 103 ZFS_AC_KERNEL_SRC_LSEEK_EXECUTE 104 ZFS_AC_KERNEL_SRC_VFS_FILEMAP_DIRTY_FOLIO 105 ZFS_AC_KERNEL_SRC_VFS_READ_FOLIO 106 ZFS_AC_KERNEL_SRC_VFS_GETATTR 107 ZFS_AC_KERNEL_SRC_VFS_FSYNC_2ARGS 108 ZFS_AC_KERNEL_SRC_VFS_ITERATE 109 ZFS_AC_KERNEL_SRC_VFS_DIRECT_IO 110 ZFS_AC_KERNEL_SRC_VFS_READPAGES 111 ZFS_AC_KERNEL_SRC_VFS_SET_PAGE_DIRTY_NOBUFFERS 112 ZFS_AC_KERNEL_SRC_VFS_RW_ITERATE 113 ZFS_AC_KERNEL_SRC_VFS_GENERIC_WRITE_CHECKS 114 ZFS_AC_KERNEL_SRC_VFS_IOV_ITER 115 ZFS_AC_KERNEL_SRC_KMAP_ATOMIC_ARGS 116 ZFS_AC_KERNEL_SRC_FOLLOW_DOWN_ONE 117 ZFS_AC_KERNEL_SRC_MAKE_REQUEST_FN 118 ZFS_AC_KERNEL_SRC_GENERIC_IO_ACCT 119 ZFS_AC_KERNEL_SRC_FPU 120 ZFS_AC_KERNEL_SRC_FMODE_T 121 ZFS_AC_KERNEL_SRC_KUIDGID_T 122 ZFS_AC_KERNEL_SRC_KUID_HELPERS 123 ZFS_AC_KERNEL_SRC_MODULE_PARAM_CALL_CONST 124 ZFS_AC_KERNEL_SRC_RENAME 125 ZFS_AC_KERNEL_SRC_CURRENT_TIME 126 ZFS_AC_KERNEL_SRC_USERNS_CAPABILITIES 127 ZFS_AC_KERNEL_SRC_IN_COMPAT_SYSCALL 128 ZFS_AC_KERNEL_SRC_KTIME 129 ZFS_AC_KERNEL_SRC_TOTALRAM_PAGES_FUNC 130 ZFS_AC_KERNEL_SRC_TOTALHIGH_PAGES 131 ZFS_AC_KERNEL_SRC_KSTRTOUL 132 ZFS_AC_KERNEL_SRC_PERCPU 133 ZFS_AC_KERNEL_SRC_CPU_HOTPLUG 134 ZFS_AC_KERNEL_SRC_GENERIC_FILLATTR_USERNS 135 ZFS_AC_KERNEL_SRC_MKNOD 136 ZFS_AC_KERNEL_SRC_SYMLINK 137 ZFS_AC_KERNEL_SRC_BIO_MAX_SEGS 138 ZFS_AC_KERNEL_SRC_SIGNAL_STOP 139 ZFS_AC_KERNEL_SRC_SIGINFO 140 ZFS_AC_KERNEL_SRC_SYSFS 141 ZFS_AC_KERNEL_SRC_SET_SPECIAL_STATE 142 ZFS_AC_KERNEL_SRC_STANDALONE_LINUX_STDARG 143 ZFS_AC_KERNEL_SRC_PAGEMAP_FOLIO_WAIT_BIT 144 ZFS_AC_KERNEL_SRC_ADD_DISK 145 ZFS_AC_KERNEL_SRC_KTHREAD 146 ZFS_AC_KERNEL_SRC_ZERO_PAGE 147 ZFS_AC_KERNEL_SRC___COPY_FROM_USER_INATOMIC 148 149 AC_MSG_CHECKING([for available kernel interfaces]) 150 ZFS_LINUX_TEST_COMPILE_ALL([kabi]) 151 AC_MSG_RESULT([done]) 152]) 153 154dnl # 155dnl # Check results of kernel interface tests. 156dnl # 157AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [ 158 ZFS_AC_KERNEL_ACCESS_OK_TYPE 159 ZFS_AC_KERNEL_GLOBAL_PAGE_STATE 160 ZFS_AC_KERNEL_OBJTOOL 161 ZFS_AC_KERNEL_PDE_DATA 162 ZFS_AC_KERNEL_FALLOCATE 163 ZFS_AC_KERNEL_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE 164 ZFS_AC_KERNEL_RWSEM 165 ZFS_AC_KERNEL_SCHED 166 ZFS_AC_KERNEL_USLEEP_RANGE 167 ZFS_AC_KERNEL_KMEM_CACHE 168 ZFS_AC_KERNEL_KVMALLOC 169 ZFS_AC_KERNEL_VMALLOC_PAGE_KERNEL 170 ZFS_AC_KERNEL_WAIT 171 ZFS_AC_KERNEL_INODE_TIMES 172 ZFS_AC_KERNEL_INODE_LOCK 173 ZFS_AC_KERNEL_GROUP_INFO_GID 174 ZFS_AC_KERNEL_RW 175 ZFS_AC_KERNEL_TIMER_SETUP 176 ZFS_AC_KERNEL_SUPER_USER_NS 177 ZFS_AC_KERNEL_PROC_OPERATIONS 178 ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS 179 ZFS_AC_KERNEL_BIO 180 ZFS_AC_KERNEL_BLKDEV 181 ZFS_AC_KERNEL_BLK_QUEUE 182 ZFS_AC_KERNEL_GENHD_FLAGS 183 ZFS_AC_KERNEL_REVALIDATE_DISK 184 ZFS_AC_KERNEL_GET_DISK_RO 185 ZFS_AC_KERNEL_GENERIC_READLINK_GLOBAL 186 ZFS_AC_KERNEL_DISCARD_GRANULARITY 187 ZFS_AC_KERNEL_INODE_OWNER_OR_CAPABLE 188 ZFS_AC_KERNEL_XATTR 189 ZFS_AC_KERNEL_ACL 190 ZFS_AC_KERNEL_INODE_GETATTR 191 ZFS_AC_KERNEL_INODE_SET_FLAGS 192 ZFS_AC_KERNEL_INODE_SET_IVERSION 193 ZFS_AC_KERNEL_SHOW_OPTIONS 194 ZFS_AC_KERNEL_FILE_INODE 195 ZFS_AC_KERNEL_FILE_DENTRY 196 ZFS_AC_KERNEL_FSYNC 197 ZFS_AC_KERNEL_AIO_FSYNC 198 ZFS_AC_KERNEL_EVICT_INODE 199 ZFS_AC_KERNEL_DIRTY_INODE 200 ZFS_AC_KERNEL_SHRINKER 201 ZFS_AC_KERNEL_MKDIR 202 ZFS_AC_KERNEL_LOOKUP_FLAGS 203 ZFS_AC_KERNEL_CREATE 204 ZFS_AC_KERNEL_PERMISSION 205 ZFS_AC_KERNEL_GET_LINK 206 ZFS_AC_KERNEL_PUT_LINK 207 ZFS_AC_KERNEL_TMPFILE 208 ZFS_AC_KERNEL_AUTOMOUNT 209 ZFS_AC_KERNEL_ENCODE_FH_WITH_INODE 210 ZFS_AC_KERNEL_COMMIT_METADATA 211 ZFS_AC_KERNEL_CLEAR_INODE 212 ZFS_AC_KERNEL_SETATTR_PREPARE 213 ZFS_AC_KERNEL_INSERT_INODE_LOCKED 214 ZFS_AC_KERNEL_DENTRY 215 ZFS_AC_KERNEL_TRUNCATE_SETSIZE 216 ZFS_AC_KERNEL_SECURITY_INODE 217 ZFS_AC_KERNEL_FST_MOUNT 218 ZFS_AC_KERNEL_BDI 219 ZFS_AC_KERNEL_SET_NLINK 220 ZFS_AC_KERNEL_SGET 221 ZFS_AC_KERNEL_LSEEK_EXECUTE 222 ZFS_AC_KERNEL_VFS_FILEMAP_DIRTY_FOLIO 223 ZFS_AC_KERNEL_VFS_READ_FOLIO 224 ZFS_AC_KERNEL_VFS_GETATTR 225 ZFS_AC_KERNEL_VFS_FSYNC_2ARGS 226 ZFS_AC_KERNEL_VFS_ITERATE 227 ZFS_AC_KERNEL_VFS_DIRECT_IO 228 ZFS_AC_KERNEL_VFS_READPAGES 229 ZFS_AC_KERNEL_VFS_SET_PAGE_DIRTY_NOBUFFERS 230 ZFS_AC_KERNEL_VFS_RW_ITERATE 231 ZFS_AC_KERNEL_VFS_GENERIC_WRITE_CHECKS 232 ZFS_AC_KERNEL_VFS_IOV_ITER 233 ZFS_AC_KERNEL_KMAP_ATOMIC_ARGS 234 ZFS_AC_KERNEL_FOLLOW_DOWN_ONE 235 ZFS_AC_KERNEL_MAKE_REQUEST_FN 236 ZFS_AC_KERNEL_GENERIC_IO_ACCT 237 ZFS_AC_KERNEL_FPU 238 ZFS_AC_KERNEL_FMODE_T 239 ZFS_AC_KERNEL_KUIDGID_T 240 ZFS_AC_KERNEL_KUID_HELPERS 241 ZFS_AC_KERNEL_MODULE_PARAM_CALL_CONST 242 ZFS_AC_KERNEL_RENAME 243 ZFS_AC_KERNEL_CURRENT_TIME 244 ZFS_AC_KERNEL_USERNS_CAPABILITIES 245 ZFS_AC_KERNEL_IN_COMPAT_SYSCALL 246 ZFS_AC_KERNEL_KTIME 247 ZFS_AC_KERNEL_TOTALRAM_PAGES_FUNC 248 ZFS_AC_KERNEL_TOTALHIGH_PAGES 249 ZFS_AC_KERNEL_KSTRTOUL 250 ZFS_AC_KERNEL_PERCPU 251 ZFS_AC_KERNEL_CPU_HOTPLUG 252 ZFS_AC_KERNEL_GENERIC_FILLATTR_USERNS 253 ZFS_AC_KERNEL_MKNOD 254 ZFS_AC_KERNEL_SYMLINK 255 ZFS_AC_KERNEL_BIO_MAX_SEGS 256 ZFS_AC_KERNEL_SIGNAL_STOP 257 ZFS_AC_KERNEL_SIGINFO 258 ZFS_AC_KERNEL_SYSFS 259 ZFS_AC_KERNEL_SET_SPECIAL_STATE 260 ZFS_AC_KERNEL_STANDALONE_LINUX_STDARG 261 ZFS_AC_KERNEL_PAGEMAP_FOLIO_WAIT_BIT 262 ZFS_AC_KERNEL_ADD_DISK 263 ZFS_AC_KERNEL_KTHREAD 264 ZFS_AC_KERNEL_ZERO_PAGE 265 ZFS_AC_KERNEL___COPY_FROM_USER_INATOMIC 266]) 267 268dnl # 269dnl # Detect name used for Module.symvers file in kernel 270dnl # 271AC_DEFUN([ZFS_AC_MODULE_SYMVERS], [ 272 modpost=$LINUX/scripts/Makefile.modpost 273 AC_MSG_CHECKING([kernel file name for module symbols]) 274 AS_IF([test "x$enable_linux_builtin" != xyes -a -f "$modpost"], [ 275 AS_IF([grep -q Modules.symvers $modpost], [ 276 LINUX_SYMBOLS=Modules.symvers 277 ], [ 278 LINUX_SYMBOLS=Module.symvers 279 ]) 280 281 AS_IF([test ! -f "$LINUX_OBJ/$LINUX_SYMBOLS"], [ 282 AC_MSG_ERROR([ 283 *** Please make sure the kernel devel package for your distribution 284 *** is installed. If you are building with a custom kernel, make sure 285 *** the kernel is configured, built, and the '--with-linux=PATH' 286 *** configure option refers to the location of the kernel source. 287 ]) 288 ]) 289 ], [ 290 LINUX_SYMBOLS=NONE 291 ]) 292 AC_MSG_RESULT($LINUX_SYMBOLS) 293 AC_SUBST(LINUX_SYMBOLS) 294]) 295 296dnl # 297dnl # Detect the kernel to be built against 298dnl # 299dnl # Most modern Linux distributions have separate locations for bare 300dnl # source (source) and prebuilt (build) files. Additionally, there are 301dnl # `source` and `build` symlinks in `/lib/modules/$(KERNEL_VERSION)` 302dnl # pointing to them. The directory search order is now: 303dnl # 304dnl # - `configure` command line values if both `--with-linux` and 305dnl # `--with-linux-obj` were defined 306dnl # 307dnl # - If only `--with-linux` was defined, `--with-linux-obj` is assumed 308dnl # to have the same value as `--with-linux` 309dnl # 310dnl # - If neither `--with-linux` nor `--with-linux-obj` were defined 311dnl # autodetection is used: 312dnl # 313dnl # - `/lib/modules/$(uname -r)/{source,build}` respectively, if exist. 314dnl # 315dnl # - If only `/lib/modules/$(uname -r)/build` exists, it is assumed 316dnl # to be both source and build directory. 317dnl # 318dnl # - The first directory in `/lib/modules` with the highest version 319dnl # number according to `sort -V` which contains both `source` and 320dnl # `build` symlinks/directories. If module directory contains only 321dnl # `build` component, it is assumed to be both source and build 322dnl # directory. 323dnl # 324dnl # - Last resort: the first directory matching `/usr/src/kernels/*` 325dnl # and `/usr/src/linux-*` with the highest version number according 326dnl # to `sort -V` is assumed to be both source and build directory. 327dnl # 328AC_DEFUN([ZFS_AC_KERNEL], [ 329 AC_ARG_WITH([linux], 330 AS_HELP_STRING([--with-linux=PATH], 331 [Path to kernel source]), 332 [kernelsrc="$withval"]) 333 334 AC_ARG_WITH(linux-obj, 335 AS_HELP_STRING([--with-linux-obj=PATH], 336 [Path to kernel build objects]), 337 [kernelbuild="$withval"]) 338 339 AC_MSG_CHECKING([kernel source and build directories]) 340 AS_IF([test -n "$kernelsrc" && test -z "$kernelbuild"], [ 341 kernelbuild="$kernelsrc" 342 ], [test -z "$kernelsrc"], [ 343 AS_IF([test -e "/lib/modules/$(uname -r)/source" && \ 344 test -e "/lib/modules/$(uname -r)/build"], [ 345 src="/lib/modules/$(uname -r)/source" 346 build="/lib/modules/$(uname -r)/build" 347 ], [test -e "/lib/modules/$(uname -r)/build"], [ 348 build="/lib/modules/$(uname -r)/build" 349 src="$build" 350 ], [ 351 src= 352 353 for d in $(ls -1d /lib/modules/* 2>/dev/null | sort -Vr); do 354 if test -e "$d/source" && test -e "$d/build"; then 355 src="$d/source" 356 build="$d/build" 357 break 358 fi 359 360 if test -e "$d/build"; then 361 src="$d/build" 362 build="$d/build" 363 break 364 fi 365 done 366 367 # the least reliable method 368 if test -z "$src"; then 369 src=$(ls -1d /usr/src/kernels/* /usr/src/linux-* \ 370 2>/dev/null | grep -v obj | sort -Vr | head -1) 371 build="$src" 372 fi 373 ]) 374 375 AS_IF([test -n "$src" && test -e "$src"], [ 376 kernelsrc=$(readlink -e "$src") 377 ], [ 378 kernelsrc="[Not found]" 379 ]) 380 AS_IF([test -n "$build" && test -e "$build"], [ 381 kernelbuild=$(readlink -e "$build") 382 ], [ 383 kernelbuild="[Not found]" 384 ]) 385 ], [ 386 AS_IF([test "$kernelsrc" = "NONE"], [ 387 kernsrcver=NONE 388 ]) 389 withlinux=yes 390 ]) 391 392 AC_MSG_RESULT([done]) 393 AC_MSG_CHECKING([kernel source directory]) 394 AC_MSG_RESULT([$kernelsrc]) 395 AC_MSG_CHECKING([kernel build directory]) 396 AC_MSG_RESULT([$kernelbuild]) 397 AS_IF([test ! -d "$kernelsrc" || test ! -d "$kernelbuild"], [ 398 AC_MSG_ERROR([ 399 *** Please make sure the kernel devel package for your distribution 400 *** is installed and then try again. If that fails, you can specify the 401 *** location of the kernel source and build with the '--with-linux=PATH' and 402 *** '--with-linux-obj=PATH' options respectively.]) 403 ]) 404 405 AC_MSG_CHECKING([kernel source version]) 406 utsrelease1=$kernelbuild/include/linux/version.h 407 utsrelease2=$kernelbuild/include/linux/utsrelease.h 408 utsrelease3=$kernelbuild/include/generated/utsrelease.h 409 AS_IF([test -r $utsrelease1 && grep -qF UTS_RELEASE $utsrelease1], [ 410 utsrelease=$utsrelease1 411 ], [test -r $utsrelease2 && grep -qF UTS_RELEASE $utsrelease2], [ 412 utsrelease=$utsrelease2 413 ], [test -r $utsrelease3 && grep -qF UTS_RELEASE $utsrelease3], [ 414 utsrelease=$utsrelease3 415 ]) 416 417 AS_IF([test -n "$utsrelease"], [ 418 kernsrcver=$($AWK '/UTS_RELEASE/ { gsub(/"/, "", $[3]); print $[3] }' $utsrelease) 419 AS_IF([test -z "$kernsrcver"], [ 420 AC_MSG_RESULT([Not found]) 421 AC_MSG_ERROR([ 422 *** Cannot determine kernel version. 423 ]) 424 ]) 425 ], [ 426 AC_MSG_RESULT([Not found]) 427 if test "x$enable_linux_builtin" != xyes; then 428 AC_MSG_ERROR([ 429 *** Cannot find UTS_RELEASE definition. 430 ]) 431 else 432 AC_MSG_ERROR([ 433 *** Cannot find UTS_RELEASE definition. 434 *** Please run 'make prepare' inside the kernel source tree.]) 435 fi 436 ]) 437 438 AC_MSG_RESULT([$kernsrcver]) 439 440 AS_VERSION_COMPARE([$kernsrcver], [$ZFS_META_KVER_MIN], [ 441 AC_MSG_ERROR([ 442 *** Cannot build against kernel version $kernsrcver. 443 *** The minimum supported kernel version is $ZFS_META_KVER_MIN. 444 ]) 445 ]) 446 447 LINUX=${kernelsrc} 448 LINUX_OBJ=${kernelbuild} 449 LINUX_VERSION=${kernsrcver} 450 451 AC_SUBST(LINUX) 452 AC_SUBST(LINUX_OBJ) 453 AC_SUBST(LINUX_VERSION) 454]) 455 456dnl # 457dnl # Detect the QAT module to be built against, QAT provides hardware 458dnl # acceleration for data compression: 459dnl # 460dnl # https://01.org/intel-quickassist-technology 461dnl # 462dnl # 1) Download and install QAT driver from the above link 463dnl # 2) Start QAT driver in your system: 464dnl # service qat_service start 465dnl # 3) Enable QAT in ZFS, e.g.: 466dnl # ./configure --with-qat=<qat-driver-path>/QAT1.6 467dnl # make 468dnl # 4) Set GZIP compression in ZFS dataset: 469dnl # zfs set compression = gzip <dataset> 470dnl # 471dnl # Then the data written to this ZFS pool is compressed by QAT accelerator 472dnl # automatically, and de-compressed by QAT when read from the pool. 473dnl # 474dnl # 1) Get QAT hardware statistics with: 475dnl # cat /proc/icp_dh895xcc_dev/qat 476dnl # 2) To disable QAT: 477dnl # insmod zfs.ko zfs_qat_disable=1 478dnl # 479AC_DEFUN([ZFS_AC_QAT], [ 480 AC_ARG_WITH([qat], 481 AS_HELP_STRING([--with-qat=PATH], 482 [Path to qat source]), 483 AS_IF([test "$withval" = "yes"], 484 AC_MSG_ERROR([--with-qat=PATH requires a PATH]), 485 [qatsrc="$withval"])) 486 487 AC_ARG_WITH([qat-obj], 488 AS_HELP_STRING([--with-qat-obj=PATH], 489 [Path to qat build objects]), 490 [qatbuild="$withval"]) 491 492 AS_IF([test ! -z "${qatsrc}"], [ 493 AC_MSG_CHECKING([qat source directory]) 494 AC_MSG_RESULT([$qatsrc]) 495 QAT_SRC="${qatsrc}/quickassist" 496 AS_IF([ test ! -e "$QAT_SRC/include/cpa.h"], [ 497 AC_MSG_ERROR([ 498 *** Please make sure the qat driver package is installed 499 *** and specify the location of the qat source with the 500 *** '--with-qat=PATH' option then try again. Failed to 501 *** find cpa.h in: 502 ${QAT_SRC}/include]) 503 ]) 504 ]) 505 506 AS_IF([test ! -z "${qatsrc}"], [ 507 AC_MSG_CHECKING([qat build directory]) 508 AS_IF([test -z "$qatbuild"], [ 509 qatbuild="${qatsrc}/build" 510 ]) 511 512 AC_MSG_RESULT([$qatbuild]) 513 QAT_OBJ=${qatbuild} 514 AS_IF([ ! test -e "$QAT_OBJ/icp_qa_al.ko" && ! test -e "$QAT_OBJ/qat_api.ko"], [ 515 AC_MSG_ERROR([ 516 *** Please make sure the qat driver is installed then try again. 517 *** Failed to find icp_qa_al.ko or qat_api.ko in: 518 $QAT_OBJ]) 519 ]) 520 521 AC_SUBST(QAT_SRC) 522 AC_SUBST(QAT_OBJ) 523 524 AC_DEFINE(HAVE_QAT, 1, 525 [qat is enabled and existed]) 526 ]) 527 528 dnl # 529 dnl # Detect the name used for the QAT Module.symvers file. 530 dnl # 531 AS_IF([test ! -z "${qatsrc}"], [ 532 AC_MSG_CHECKING([qat file for module symbols]) 533 QAT_SYMBOLS=$QAT_SRC/lookaside/access_layer/src/Module.symvers 534 535 AS_IF([test -r $QAT_SYMBOLS], [ 536 AC_MSG_RESULT([$QAT_SYMBOLS]) 537 AC_SUBST(QAT_SYMBOLS) 538 ],[ 539 AC_MSG_ERROR([ 540 *** Please make sure the qat driver is installed then try again. 541 *** Failed to find Module.symvers in: 542 $QAT_SYMBOLS 543 ]) 544 ]) 545 ]) 546]) 547 548dnl # 549dnl # ZFS_LINUX_CONFTEST_H 550dnl # 551AC_DEFUN([ZFS_LINUX_CONFTEST_H], [ 552test -d build/$2 || mkdir -p build/$2 553cat - <<_ACEOF >build/$2/$2.h 554$1 555_ACEOF 556]) 557 558dnl # 559dnl # ZFS_LINUX_CONFTEST_C 560dnl # 561AC_DEFUN([ZFS_LINUX_CONFTEST_C], [ 562test -d build/$2 || mkdir -p build/$2 563cat confdefs.h - <<_ACEOF >build/$2/$2.c 564$1 565_ACEOF 566]) 567 568dnl # 569dnl # ZFS_LINUX_CONFTEST_MAKEFILE 570dnl # 571dnl # $1 - test case name 572dnl # $2 - add to top-level Makefile 573dnl # $3 - additional build flags 574dnl # 575AC_DEFUN([ZFS_LINUX_CONFTEST_MAKEFILE], [ 576 test -d build || mkdir -p build 577 test -d build/$1 || mkdir -p build/$1 578 579 file=build/$1/Makefile 580 581 dnl # Example command line to manually build source. 582 cat - <<_ACEOF >$file 583# Example command line to manually build source 584# make modules -C $LINUX_OBJ $ARCH_UM M=$PWD/build/$1 585 586ccflags-y := -Werror $FRAME_LARGER_THAN 587_ACEOF 588 589 dnl # Additional custom CFLAGS as requested. 590 m4_ifval($3, [echo "ccflags-y += $3" >>$file], []) 591 592 dnl # Test case source 593 echo "obj-m := $1.o" >>$file 594 595 AS_IF([test "x$2" = "xyes"], [echo "obj-m += $1/" >>build/Makefile], []) 596]) 597 598dnl # 599dnl # ZFS_LINUX_TEST_PROGRAM(C)([PROLOGUE], [BODY]) 600dnl # 601m4_define([ZFS_LINUX_TEST_PROGRAM], [ 602#include <linux/module.h> 603$1 604 605int 606main (void) 607{ 608$2 609 ; 610 return 0; 611} 612 613MODULE_DESCRIPTION("conftest"); 614MODULE_AUTHOR(ZFS_META_AUTHOR); 615MODULE_VERSION(ZFS_META_VERSION "-" ZFS_META_RELEASE); 616MODULE_LICENSE($3); 617]) 618 619dnl # 620dnl # ZFS_LINUX_TEST_REMOVE 621dnl # 622dnl # Removes the specified test source and results. 623dnl # 624AC_DEFUN([ZFS_LINUX_TEST_REMOVE], [ 625 test -d build/$1 && rm -Rf build/$1 626 test -f build/Makefile && sed '/$1/d' build/Makefile 627]) 628 629dnl # 630dnl # ZFS_LINUX_COMPILE 631dnl # 632dnl # $1 - build dir 633dnl # $2 - test command 634dnl # $3 - pass command 635dnl # $4 - fail command 636dnl # $5 - set KBUILD_MODPOST_NOFINAL='yes' 637dnl # $6 - set KBUILD_MODPOST_WARN='yes' 638dnl # 639dnl # Used internally by ZFS_LINUX_TEST_{COMPILE,MODPOST} 640dnl # 641AC_DEFUN([ZFS_LINUX_COMPILE], [ 642 AC_ARG_VAR([KERNEL_CC], [C compiler for 643 building kernel modules]) 644 AC_ARG_VAR([KERNEL_LD], [Linker for 645 building kernel modules]) 646 AC_ARG_VAR([KERNEL_LLVM], [Binary option to 647 build kernel modules with LLVM/CLANG toolchain]) 648 AC_TRY_COMMAND([ 649 KBUILD_MODPOST_NOFINAL="$5" KBUILD_MODPOST_WARN="$6" 650 make modules -k -j$TEST_JOBS ${KERNEL_CC:+CC=$KERNEL_CC} 651 ${KERNEL_LD:+LD=$KERNEL_LD} ${KERNEL_LLVM:+LLVM=$KERNEL_LLVM} 652 CONFIG_MODULES=y CFLAGS_MODULE=-DCONFIG_MODULES 653 -C $LINUX_OBJ $ARCH_UM M=$PWD/$1 >$1/build.log 2>&1]) 654 AS_IF([AC_TRY_COMMAND([$2])], [$3], [$4]) 655]) 656 657dnl # 658dnl # ZFS_LINUX_TEST_COMPILE 659dnl # 660dnl # Perform a full compile excluding the final modpost phase. 661dnl # 662AC_DEFUN([ZFS_LINUX_TEST_COMPILE], [ 663 ZFS_LINUX_COMPILE([$2], [test -f $2/build.log], [ 664 mv $2/Makefile $2/Makefile.compile.$1 665 mv $2/build.log $2/build.log.$1 666 ],[ 667 AC_MSG_ERROR([ 668 *** Unable to compile test source to determine kernel interfaces.]) 669 ], [yes], []) 670]) 671 672dnl # 673dnl # ZFS_LINUX_TEST_MODPOST 674dnl # 675dnl # Perform a full compile including the modpost phase. This may 676dnl # be an incremental build if the objects have already been built. 677dnl # 678AC_DEFUN([ZFS_LINUX_TEST_MODPOST], [ 679 ZFS_LINUX_COMPILE([$2], [test -f $2/build.log], [ 680 mv $2/Makefile $2/Makefile.modpost.$1 681 cat $2/build.log >>build/build.log.$1 682 ],[ 683 AC_MSG_ERROR([ 684 *** Unable to modpost test source to determine kernel interfaces.]) 685 ], [], [yes]) 686]) 687 688dnl # 689dnl # Perform the compilation of the test cases in two phases. 690dnl # 691dnl # Phase 1) attempt to build the object files for all of the tests 692dnl # defined by the ZFS_LINUX_TEST_SRC macro. But do not 693dnl # perform the final modpost stage. 694dnl # 695dnl # Phase 2) disable all tests which failed the initial compilation, 696dnl # then invoke the final modpost step for the remaining tests. 697dnl # 698dnl # This allows us efficiently build the test cases in parallel while 699dnl # remaining resilient to build failures which are expected when 700dnl # detecting the available kernel interfaces. 701dnl # 702dnl # The maximum allowed parallelism can be controlled by setting the 703dnl # TEST_JOBS environment variable. Otherwise, it default to $(nproc). 704dnl # 705AC_DEFUN([ZFS_LINUX_TEST_COMPILE_ALL], [ 706 dnl # Phase 1 - Compilation only, final linking is skipped. 707 ZFS_LINUX_TEST_COMPILE([$1], [build]) 708 709 dnl # 710 dnl # Phase 2 - When building external modules disable test cases 711 dnl # which failed to compile and invoke modpost to verify the 712 dnl # final linking. 713 dnl # 714 dnl # Test names suffixed with '_license' call modpost independently 715 dnl # to ensure that a single incompatibility does not result in the 716 dnl # modpost phase exiting early. This check is not performed on 717 dnl # every symbol since the majority are compatible and doing so 718 dnl # would significantly slow down this phase. 719 dnl # 720 dnl # When configuring for builtin (--enable-linux-builtin) 721 dnl # fake the linking step artificially create the expected .ko 722 dnl # files for tests which did compile. This is required for 723 dnl # kernels which do not have loadable module support or have 724 dnl # not yet been built. 725 dnl # 726 AS_IF([test "x$enable_linux_builtin" = "xno"], [ 727 for dir in $(awk '/^obj-m/ { print [$]3 }' \ 728 build/Makefile.compile.$1); do 729 name=${dir%/} 730 AS_IF([test -f build/$name/$name.o], [ 731 AS_IF([test "${name##*_}" = "license"], [ 732 ZFS_LINUX_TEST_MODPOST([$1], 733 [build/$name]) 734 echo "obj-n += $dir" >>build/Makefile 735 ], [ 736 echo "obj-m += $dir" >>build/Makefile 737 ]) 738 ], [ 739 echo "obj-n += $dir" >>build/Makefile 740 ]) 741 done 742 743 ZFS_LINUX_TEST_MODPOST([$1], [build]) 744 ], [ 745 for dir in $(awk '/^obj-m/ { print [$]3 }' \ 746 build/Makefile.compile.$1); do 747 name=${dir%/} 748 AS_IF([test -f build/$name/$name.o], [ 749 touch build/$name/$name.ko 750 ]) 751 done 752 ]) 753]) 754 755dnl # 756dnl # ZFS_LINUX_TEST_SRC 757dnl # 758dnl # $1 - name 759dnl # $2 - global 760dnl # $3 - source 761dnl # $4 - extra cflags 762dnl # $5 - check license-compatibility 763dnl # 764dnl # Check if the test source is buildable at all and then if it is 765dnl # license compatible. 766dnl # 767dnl # N.B because all of the test cases are compiled in parallel they 768dnl # must never depend on the results of previous tests. Each test 769dnl # needs to be entirely independent. 770dnl # 771AC_DEFUN([ZFS_LINUX_TEST_SRC], [ 772 ZFS_LINUX_CONFTEST_C([ZFS_LINUX_TEST_PROGRAM([[$2]], [[$3]], 773 [["Dual BSD/GPL"]])], [$1]) 774 ZFS_LINUX_CONFTEST_MAKEFILE([$1], [yes], [$4]) 775 776 AS_IF([ test -n "$5" ], [ 777 ZFS_LINUX_CONFTEST_C([ZFS_LINUX_TEST_PROGRAM( 778 [[$2]], [[$3]], [[$5]])], [$1_license]) 779 ZFS_LINUX_CONFTEST_MAKEFILE([$1_license], [yes], [$4]) 780 ]) 781]) 782 783dnl # 784dnl # ZFS_LINUX_TEST_RESULT 785dnl # 786dnl # $1 - name of a test source (ZFS_LINUX_TEST_SRC) 787dnl # $2 - run on success (valid .ko generated) 788dnl # $3 - run on failure (unable to compile) 789dnl # 790AC_DEFUN([ZFS_LINUX_TEST_RESULT], [ 791 AS_IF([test -d build/$1], [ 792 AS_IF([test -f build/$1/$1.ko], [$2], [$3]) 793 ], [ 794 AC_MSG_ERROR([ 795 *** No matching source for the "$1" test, check that 796 *** both the test source and result macros refer to the same name. 797 ]) 798 ]) 799]) 800 801dnl # 802dnl # ZFS_LINUX_TEST_ERROR 803dnl # 804dnl # Generic error message which can be used when none of the expected 805dnl # kernel interfaces were detected. 806dnl # 807AC_DEFUN([ZFS_LINUX_TEST_ERROR], [ 808 AC_MSG_ERROR([ 809 *** None of the expected "$1" interfaces were detected. 810 *** This may be because your kernel version is newer than what is 811 *** supported, or you are using a patched custom kernel with 812 *** incompatible modifications. 813 *** 814 *** ZFS Version: $ZFS_META_ALIAS 815 *** Compatible Kernels: $ZFS_META_KVER_MIN - $ZFS_META_KVER_MAX 816 ]) 817]) 818 819dnl # 820dnl # ZFS_LINUX_TEST_RESULT_SYMBOL 821dnl # 822dnl # Like ZFS_LINUX_TEST_RESULT except ZFS_CHECK_SYMBOL_EXPORT is called to 823dnl # verify symbol exports, unless --enable-linux-builtin was provided to 824dnl # configure. 825dnl # 826AC_DEFUN([ZFS_LINUX_TEST_RESULT_SYMBOL], [ 827 AS_IF([ ! test -f build/$1/$1.ko], [ 828 $5 829 ], [ 830 AS_IF([test "x$enable_linux_builtin" != "xyes"], [ 831 ZFS_CHECK_SYMBOL_EXPORT([$2], [$3], [$4], [$5]) 832 ], [ 833 $4 834 ]) 835 ]) 836]) 837 838dnl # 839dnl # ZFS_LINUX_COMPILE_IFELSE 840dnl # 841AC_DEFUN([ZFS_LINUX_COMPILE_IFELSE], [ 842 ZFS_LINUX_TEST_REMOVE([conftest]) 843 844 m4_ifvaln([$1], [ZFS_LINUX_CONFTEST_C([$1], [conftest])]) 845 m4_ifvaln([$5], [ZFS_LINUX_CONFTEST_H([$5], [conftest])], 846 [ZFS_LINUX_CONFTEST_H([], [conftest])]) 847 848 ZFS_LINUX_CONFTEST_MAKEFILE([conftest], [no], 849 [m4_ifvaln([$5], [-I$PWD/build/conftest], [])]) 850 ZFS_LINUX_COMPILE([build/conftest], [$2], [$3], [$4], [], []) 851]) 852 853dnl # 854dnl # ZFS_LINUX_TRY_COMPILE 855dnl # 856dnl # $1 - global 857dnl # $2 - source 858dnl # $3 - run on success (valid .ko generated) 859dnl # $4 - run on failure (unable to compile) 860dnl # 861dnl # When configuring as builtin (--enable-linux-builtin) for kernels 862dnl # without loadable module support (CONFIG_MODULES=n) only the object 863dnl # file is created. See ZFS_LINUX_TEST_COMPILE_ALL for details. 864dnl # 865AC_DEFUN([ZFS_LINUX_TRY_COMPILE], [ 866 AS_IF([test "x$enable_linux_builtin" = "xyes"], [ 867 ZFS_LINUX_COMPILE_IFELSE( 868 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 869 [[ZFS_META_LICENSE]])], 870 [test -f build/conftest/conftest.o], [$3], [$4]) 871 ], [ 872 ZFS_LINUX_COMPILE_IFELSE( 873 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 874 [[ZFS_META_LICENSE]])], 875 [test -f build/conftest/conftest.ko], [$3], [$4]) 876 ]) 877]) 878 879dnl # 880dnl # ZFS_CHECK_SYMBOL_EXPORT 881dnl # 882dnl # Check if a symbol is exported on not by consulting the symbols 883dnl # file, or optionally the source code. 884dnl # 885AC_DEFUN([ZFS_CHECK_SYMBOL_EXPORT], [ 886 grep -q -E '[[[:space:]]]$1[[[:space:]]]' \ 887 $LINUX_OBJ/$LINUX_SYMBOLS 2>/dev/null 888 rc=$? 889 if test $rc -ne 0; then 890 export=0 891 for file in $2; do 892 grep -q -E "EXPORT_SYMBOL.*($1)" \ 893 "$LINUX/$file" 2>/dev/null 894 rc=$? 895 if test $rc -eq 0; then 896 export=1 897 break; 898 fi 899 done 900 if test $export -eq 0; then : 901 $4 902 else : 903 $3 904 fi 905 else : 906 $3 907 fi 908]) 909 910dnl # 911dnl # ZFS_LINUX_TRY_COMPILE_SYMBOL 912dnl # 913dnl # Like ZFS_LINUX_TRY_COMPILER except ZFS_CHECK_SYMBOL_EXPORT is called 914dnl # to verify symbol exports, unless --enable-linux-builtin was provided 915dnl # to configure. 916dnl # 917AC_DEFUN([ZFS_LINUX_TRY_COMPILE_SYMBOL], [ 918 ZFS_LINUX_TRY_COMPILE([$1], [$2], [rc=0], [rc=1]) 919 if test $rc -ne 0; then : 920 $6 921 else 922 if test "x$enable_linux_builtin" != xyes; then 923 ZFS_CHECK_SYMBOL_EXPORT([$3], [$4], [rc=0], [rc=1]) 924 fi 925 if test $rc -ne 0; then : 926 $6 927 else : 928 $5 929 fi 930 fi 931]) 932 933dnl # 934dnl # ZFS_LINUX_TRY_COMPILE_HEADER 935dnl # like ZFS_LINUX_TRY_COMPILE, except the contents conftest.h are 936dnl # provided via the fifth parameter 937dnl # 938AC_DEFUN([ZFS_LINUX_TRY_COMPILE_HEADER], [ 939 ZFS_LINUX_COMPILE_IFELSE( 940 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], [[ZFS_META_LICENSE]])], 941 [test -f build/conftest/conftest.ko], 942 [$3], [$4], [$5]) 943]) 944