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