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_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 ZFS_AC_KERNEL_SRC_FILEMAP 154 case "$host_cpu" in 155 powerpc*) 156 ZFS_AC_KERNEL_SRC_CPU_HAS_FEATURE 157 ZFS_AC_KERNEL_SRC_FLUSH_DCACHE_PAGE 158 ;; 159 esac 160 161 AC_MSG_CHECKING([for available kernel interfaces]) 162 ZFS_LINUX_TEST_COMPILE_ALL([kabi]) 163 AC_MSG_RESULT([done]) 164]) 165 166dnl # 167dnl # Check results of kernel interface tests. 168dnl # 169AC_DEFUN([ZFS_AC_KERNEL_TEST_RESULT], [ 170 ZFS_AC_KERNEL_ACCESS_OK_TYPE 171 ZFS_AC_KERNEL_GLOBAL_PAGE_STATE 172 ZFS_AC_KERNEL_OBJTOOL 173 ZFS_AC_KERNEL_PDE_DATA 174 ZFS_AC_KERNEL_FALLOCATE 175 ZFS_AC_KERNEL_FADVISE 176 ZFS_AC_KERNEL_GENERIC_FADVISE 177 ZFS_AC_KERNEL_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE 178 ZFS_AC_KERNEL_RWSEM 179 ZFS_AC_KERNEL_SCHED 180 ZFS_AC_KERNEL_USLEEP_RANGE 181 ZFS_AC_KERNEL_KMEM_CACHE 182 ZFS_AC_KERNEL_KVMALLOC 183 ZFS_AC_KERNEL_VMALLOC_PAGE_KERNEL 184 ZFS_AC_KERNEL_WAIT 185 ZFS_AC_KERNEL_INODE_TIMES 186 ZFS_AC_KERNEL_INODE_LOCK 187 ZFS_AC_KERNEL_GROUP_INFO_GID 188 ZFS_AC_KERNEL_RW 189 ZFS_AC_KERNEL_TIMER_SETUP 190 ZFS_AC_KERNEL_SUPER_USER_NS 191 ZFS_AC_KERNEL_PROC_OPERATIONS 192 ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS 193 ZFS_AC_KERNEL_BIO 194 ZFS_AC_KERNEL_BLKDEV 195 ZFS_AC_KERNEL_BLK_QUEUE 196 ZFS_AC_KERNEL_GENHD_FLAGS 197 ZFS_AC_KERNEL_REVALIDATE_DISK 198 ZFS_AC_KERNEL_GET_DISK_RO 199 ZFS_AC_KERNEL_GENERIC_READLINK_GLOBAL 200 ZFS_AC_KERNEL_DISCARD_GRANULARITY 201 ZFS_AC_KERNEL_INODE_OWNER_OR_CAPABLE 202 ZFS_AC_KERNEL_XATTR 203 ZFS_AC_KERNEL_ACL 204 ZFS_AC_KERNEL_INODE_GETATTR 205 ZFS_AC_KERNEL_INODE_SET_FLAGS 206 ZFS_AC_KERNEL_INODE_SET_IVERSION 207 ZFS_AC_KERNEL_SHOW_OPTIONS 208 ZFS_AC_KERNEL_FILE_INODE 209 ZFS_AC_KERNEL_FILE_DENTRY 210 ZFS_AC_KERNEL_FSYNC 211 ZFS_AC_KERNEL_AIO_FSYNC 212 ZFS_AC_KERNEL_EVICT_INODE 213 ZFS_AC_KERNEL_DIRTY_INODE 214 ZFS_AC_KERNEL_SHRINKER 215 ZFS_AC_KERNEL_MKDIR 216 ZFS_AC_KERNEL_LOOKUP_FLAGS 217 ZFS_AC_KERNEL_CREATE 218 ZFS_AC_KERNEL_PERMISSION 219 ZFS_AC_KERNEL_GET_LINK 220 ZFS_AC_KERNEL_PUT_LINK 221 ZFS_AC_KERNEL_TMPFILE 222 ZFS_AC_KERNEL_AUTOMOUNT 223 ZFS_AC_KERNEL_ENCODE_FH_WITH_INODE 224 ZFS_AC_KERNEL_COMMIT_METADATA 225 ZFS_AC_KERNEL_CLEAR_INODE 226 ZFS_AC_KERNEL_SETATTR_PREPARE 227 ZFS_AC_KERNEL_INSERT_INODE_LOCKED 228 ZFS_AC_KERNEL_DENTRY 229 ZFS_AC_KERNEL_DENTRY_ALIAS_D_U 230 ZFS_AC_KERNEL_TRUNCATE_SETSIZE 231 ZFS_AC_KERNEL_SECURITY_INODE 232 ZFS_AC_KERNEL_FST_MOUNT 233 ZFS_AC_KERNEL_BDI 234 ZFS_AC_KERNEL_SET_NLINK 235 ZFS_AC_KERNEL_SGET 236 ZFS_AC_KERNEL_LSEEK_EXECUTE 237 ZFS_AC_KERNEL_VFS_FILEMAP_DIRTY_FOLIO 238 ZFS_AC_KERNEL_VFS_READ_FOLIO 239 ZFS_AC_KERNEL_VFS_GETATTR 240 ZFS_AC_KERNEL_VFS_FSYNC_2ARGS 241 ZFS_AC_KERNEL_VFS_ITERATE 242 ZFS_AC_KERNEL_VFS_DIRECT_IO 243 ZFS_AC_KERNEL_VFS_READPAGES 244 ZFS_AC_KERNEL_VFS_SET_PAGE_DIRTY_NOBUFFERS 245 ZFS_AC_KERNEL_VFS_RW_ITERATE 246 ZFS_AC_KERNEL_VFS_GENERIC_WRITE_CHECKS 247 ZFS_AC_KERNEL_VFS_IOV_ITER 248 ZFS_AC_KERNEL_KMAP_ATOMIC_ARGS 249 ZFS_AC_KERNEL_FOLLOW_DOWN_ONE 250 ZFS_AC_KERNEL_MAKE_REQUEST_FN 251 ZFS_AC_KERNEL_GENERIC_IO_ACCT 252 ZFS_AC_KERNEL_FPU 253 ZFS_AC_KERNEL_FMODE_T 254 ZFS_AC_KERNEL_KUIDGID_T 255 ZFS_AC_KERNEL_KUID_HELPERS 256 ZFS_AC_KERNEL_RENAME 257 ZFS_AC_KERNEL_CURRENT_TIME 258 ZFS_AC_KERNEL_USERNS_CAPABILITIES 259 ZFS_AC_KERNEL_IN_COMPAT_SYSCALL 260 ZFS_AC_KERNEL_KTIME 261 ZFS_AC_KERNEL_TOTALRAM_PAGES_FUNC 262 ZFS_AC_KERNEL_TOTALHIGH_PAGES 263 ZFS_AC_KERNEL_KSTRTOUL 264 ZFS_AC_KERNEL_PERCPU 265 ZFS_AC_KERNEL_CPU_HOTPLUG 266 ZFS_AC_KERNEL_GENERIC_FILLATTR_USERNS 267 ZFS_AC_KERNEL_MKNOD 268 ZFS_AC_KERNEL_SYMLINK 269 ZFS_AC_KERNEL_BIO_MAX_SEGS 270 ZFS_AC_KERNEL_SIGNAL_STOP 271 ZFS_AC_KERNEL_SIGINFO 272 ZFS_AC_KERNEL_SYSFS 273 ZFS_AC_KERNEL_SET_SPECIAL_STATE 274 ZFS_AC_KERNEL_STANDALONE_LINUX_STDARG 275 ZFS_AC_KERNEL_PAGEMAP_FOLIO_WAIT_BIT 276 ZFS_AC_KERNEL_ADD_DISK 277 ZFS_AC_KERNEL_KTHREAD 278 ZFS_AC_KERNEL_ZERO_PAGE 279 ZFS_AC_KERNEL___COPY_FROM_USER_INATOMIC 280 ZFS_AC_KERNEL_USER_NS_COMMON_INUM 281 ZFS_AC_KERNEL_IDMAP_MNT_API 282 ZFS_AC_KERNEL_IATTR_VFSID 283 ZFS_AC_KERNEL_FILEMAP 284 case "$host_cpu" in 285 powerpc*) 286 ZFS_AC_KERNEL_CPU_HAS_FEATURE 287 ZFS_AC_KERNEL_FLUSH_DCACHE_PAGE 288 ;; 289 esac 290]) 291 292dnl # 293dnl # Detect name used for Module.symvers file in kernel 294dnl # 295AC_DEFUN([ZFS_AC_MODULE_SYMVERS], [ 296 modpost=$LINUX/scripts/Makefile.modpost 297 AC_MSG_CHECKING([kernel file name for module symbols]) 298 AS_IF([test "x$enable_linux_builtin" != xyes -a -f "$modpost"], [ 299 AS_IF([grep -q Modules.symvers $modpost], [ 300 LINUX_SYMBOLS=Modules.symvers 301 ], [ 302 LINUX_SYMBOLS=Module.symvers 303 ]) 304 305 AS_IF([test ! -f "$LINUX_OBJ/$LINUX_SYMBOLS"], [ 306 AC_MSG_ERROR([ 307 *** Please make sure the kernel devel package for your distribution 308 *** is installed. If you are building with a custom kernel, make sure 309 *** the kernel is configured, built, and the '--with-linux=PATH' 310 *** configure option refers to the location of the kernel source. 311 ]) 312 ]) 313 ], [ 314 LINUX_SYMBOLS=NONE 315 ]) 316 AC_MSG_RESULT($LINUX_SYMBOLS) 317 AC_SUBST(LINUX_SYMBOLS) 318]) 319 320dnl # 321dnl # Detect the kernel to be built against 322dnl # 323dnl # Most modern Linux distributions have separate locations for bare 324dnl # source (source) and prebuilt (build) files. Additionally, there are 325dnl # `source` and `build` symlinks in `/lib/modules/$(KERNEL_VERSION)` 326dnl # pointing to them. The directory search order is now: 327dnl # 328dnl # - `configure` command line values if both `--with-linux` and 329dnl # `--with-linux-obj` were defined 330dnl # 331dnl # - If only `--with-linux` was defined, `--with-linux-obj` is assumed 332dnl # to have the same value as `--with-linux` 333dnl # 334dnl # - If neither `--with-linux` nor `--with-linux-obj` were defined 335dnl # autodetection is used: 336dnl # 337dnl # - `/lib/modules/$(uname -r)/{source,build}` respectively, if exist. 338dnl # 339dnl # - If only `/lib/modules/$(uname -r)/build` exists, it is assumed 340dnl # to be both source and build directory. 341dnl # 342dnl # - The first directory in `/lib/modules` with the highest version 343dnl # number according to `sort -V` which contains both `source` and 344dnl # `build` symlinks/directories. If module directory contains only 345dnl # `build` component, it is assumed to be both source and build 346dnl # directory. 347dnl # 348dnl # - Last resort: the first directory matching `/usr/src/kernels/*` 349dnl # and `/usr/src/linux-*` with the highest version number according 350dnl # to `sort -V` is assumed to be both source and build directory. 351dnl # 352AC_DEFUN([ZFS_AC_KERNEL], [ 353 AC_ARG_WITH([linux], 354 AS_HELP_STRING([--with-linux=PATH], 355 [Path to kernel source]), 356 [kernelsrc="$withval"]) 357 358 AC_ARG_WITH(linux-obj, 359 AS_HELP_STRING([--with-linux-obj=PATH], 360 [Path to kernel build objects]), 361 [kernelbuild="$withval"]) 362 363 AC_MSG_CHECKING([kernel source and build directories]) 364 AS_IF([test -n "$kernelsrc" && test -z "$kernelbuild"], [ 365 kernelbuild="$kernelsrc" 366 ], [test -z "$kernelsrc"], [ 367 AS_IF([test -e "/lib/modules/$(uname -r)/source" && \ 368 test -e "/lib/modules/$(uname -r)/build"], [ 369 src="/lib/modules/$(uname -r)/source" 370 build="/lib/modules/$(uname -r)/build" 371 ], [test -e "/lib/modules/$(uname -r)/build"], [ 372 build="/lib/modules/$(uname -r)/build" 373 src="$build" 374 ], [ 375 src= 376 377 for d in $(ls -1d /lib/modules/* 2>/dev/null | sort -Vr); do 378 if test -e "$d/source" && test -e "$d/build"; then 379 src="$d/source" 380 build="$d/build" 381 break 382 fi 383 384 if test -e "$d/build"; then 385 src="$d/build" 386 build="$d/build" 387 break 388 fi 389 done 390 391 # the least reliable method 392 if test -z "$src"; then 393 src=$(ls -1d /usr/src/kernels/* /usr/src/linux-* \ 394 2>/dev/null | grep -v obj | sort -Vr | head -1) 395 build="$src" 396 fi 397 ]) 398 399 AS_IF([test -n "$src" && test -e "$src"], [ 400 kernelsrc=$(readlink -e "$src") 401 ], [ 402 kernelsrc="[Not found]" 403 ]) 404 AS_IF([test -n "$build" && test -e "$build"], [ 405 kernelbuild=$(readlink -e "$build") 406 ], [ 407 kernelbuild="[Not found]" 408 ]) 409 ], [ 410 AS_IF([test "$kernelsrc" = "NONE"], [ 411 kernsrcver=NONE 412 ]) 413 withlinux=yes 414 ]) 415 416 AC_MSG_RESULT([done]) 417 AC_MSG_CHECKING([kernel source directory]) 418 AC_MSG_RESULT([$kernelsrc]) 419 AC_MSG_CHECKING([kernel build directory]) 420 AC_MSG_RESULT([$kernelbuild]) 421 AS_IF([test ! -d "$kernelsrc" || test ! -d "$kernelbuild"], [ 422 AC_MSG_ERROR([ 423 *** Please make sure the kernel devel package for your distribution 424 *** is installed and then try again. If that fails, you can specify the 425 *** location of the kernel source and build with the '--with-linux=PATH' and 426 *** '--with-linux-obj=PATH' options respectively.]) 427 ]) 428 429 AC_MSG_CHECKING([kernel source version]) 430 utsrelease1=$kernelbuild/include/linux/version.h 431 utsrelease2=$kernelbuild/include/linux/utsrelease.h 432 utsrelease3=$kernelbuild/include/generated/utsrelease.h 433 AS_IF([test -r $utsrelease1 && grep -qF UTS_RELEASE $utsrelease1], [ 434 utsrelease=$utsrelease1 435 ], [test -r $utsrelease2 && grep -qF UTS_RELEASE $utsrelease2], [ 436 utsrelease=$utsrelease2 437 ], [test -r $utsrelease3 && grep -qF UTS_RELEASE $utsrelease3], [ 438 utsrelease=$utsrelease3 439 ]) 440 441 AS_IF([test -n "$utsrelease"], [ 442 kernsrcver=$($AWK '/UTS_RELEASE/ { gsub(/"/, "", $[3]); print $[3] }' $utsrelease) 443 AS_IF([test -z "$kernsrcver"], [ 444 AC_MSG_RESULT([Not found]) 445 AC_MSG_ERROR([ 446 *** Cannot determine kernel version. 447 ]) 448 ]) 449 ], [ 450 AC_MSG_RESULT([Not found]) 451 if test "x$enable_linux_builtin" != xyes; then 452 AC_MSG_ERROR([ 453 *** Cannot find UTS_RELEASE definition. 454 ]) 455 else 456 AC_MSG_ERROR([ 457 *** Cannot find UTS_RELEASE definition. 458 *** Please run 'make prepare' inside the kernel source tree.]) 459 fi 460 ]) 461 462 AC_MSG_RESULT([$kernsrcver]) 463 464 AS_VERSION_COMPARE([$kernsrcver], [$ZFS_META_KVER_MIN], [ 465 AC_MSG_ERROR([ 466 *** Cannot build against kernel version $kernsrcver. 467 *** The minimum supported kernel version is $ZFS_META_KVER_MIN. 468 ]) 469 ]) 470 471 LINUX=${kernelsrc} 472 LINUX_OBJ=${kernelbuild} 473 LINUX_VERSION=${kernsrcver} 474 475 AC_SUBST(LINUX) 476 AC_SUBST(LINUX_OBJ) 477 AC_SUBST(LINUX_VERSION) 478]) 479 480dnl # 481dnl # Detect the QAT module to be built against, QAT provides hardware 482dnl # acceleration for data compression: 483dnl # 484dnl # https://01.org/intel-quickassist-technology 485dnl # 486dnl # 1) Download and install QAT driver from the above link 487dnl # 2) Start QAT driver in your system: 488dnl # service qat_service start 489dnl # 3) Enable QAT in ZFS, e.g.: 490dnl # ./configure --with-qat=<qat-driver-path>/QAT1.6 491dnl # make 492dnl # 4) Set GZIP compression in ZFS dataset: 493dnl # zfs set compression = gzip <dataset> 494dnl # 495dnl # Then the data written to this ZFS pool is compressed by QAT accelerator 496dnl # automatically, and de-compressed by QAT when read from the pool. 497dnl # 498dnl # 1) Get QAT hardware statistics with: 499dnl # cat /proc/icp_dh895xcc_dev/qat 500dnl # 2) To disable QAT: 501dnl # insmod zfs.ko zfs_qat_disable=1 502dnl # 503AC_DEFUN([ZFS_AC_QAT], [ 504 AC_ARG_WITH([qat], 505 AS_HELP_STRING([--with-qat=PATH], 506 [Path to qat source]), 507 AS_IF([test "$withval" = "yes"], 508 AC_MSG_ERROR([--with-qat=PATH requires a PATH]), 509 [qatsrc="$withval"])) 510 511 AC_ARG_WITH([qat-obj], 512 AS_HELP_STRING([--with-qat-obj=PATH], 513 [Path to qat build objects]), 514 [qatbuild="$withval"]) 515 516 AS_IF([test ! -z "${qatsrc}"], [ 517 AC_MSG_CHECKING([qat source directory]) 518 AC_MSG_RESULT([$qatsrc]) 519 QAT_SRC="${qatsrc}/quickassist" 520 AS_IF([ test ! -e "$QAT_SRC/include/cpa.h"], [ 521 AC_MSG_ERROR([ 522 *** Please make sure the qat driver package is installed 523 *** and specify the location of the qat source with the 524 *** '--with-qat=PATH' option then try again. Failed to 525 *** find cpa.h in: 526 ${QAT_SRC}/include]) 527 ]) 528 ]) 529 530 AS_IF([test ! -z "${qatsrc}"], [ 531 AC_MSG_CHECKING([qat build directory]) 532 AS_IF([test -z "$qatbuild"], [ 533 qatbuild="${qatsrc}/build" 534 ]) 535 536 AC_MSG_RESULT([$qatbuild]) 537 QAT_OBJ=${qatbuild} 538 AS_IF([ ! test -e "$QAT_OBJ/icp_qa_al.ko" && ! test -e "$QAT_OBJ/qat_api.ko"], [ 539 AC_MSG_ERROR([ 540 *** Please make sure the qat driver is installed then try again. 541 *** Failed to find icp_qa_al.ko or qat_api.ko in: 542 $QAT_OBJ]) 543 ]) 544 545 AC_SUBST(QAT_SRC) 546 AC_SUBST(QAT_OBJ) 547 548 AC_DEFINE(HAVE_QAT, 1, 549 [qat is enabled and existed]) 550 ]) 551 552 dnl # 553 dnl # Detect the name used for the QAT Module.symvers file. 554 dnl # 555 AS_IF([test ! -z "${qatsrc}"], [ 556 AC_MSG_CHECKING([qat file for module symbols]) 557 QAT_SYMBOLS=$QAT_SRC/lookaside/access_layer/src/Module.symvers 558 559 AS_IF([test -r $QAT_SYMBOLS], [ 560 AC_MSG_RESULT([$QAT_SYMBOLS]) 561 AC_SUBST(QAT_SYMBOLS) 562 ],[ 563 AC_MSG_ERROR([ 564 *** Please make sure the qat driver is installed then try again. 565 *** Failed to find Module.symvers in: 566 $QAT_SYMBOLS 567 ]) 568 ]) 569 ]) 570]) 571 572dnl # 573dnl # ZFS_LINUX_CONFTEST_H 574dnl # 575AC_DEFUN([ZFS_LINUX_CONFTEST_H], [ 576test -d build/$2 || mkdir -p build/$2 577cat - <<_ACEOF >build/$2/$2.h 578$1 579_ACEOF 580]) 581 582dnl # 583dnl # ZFS_LINUX_CONFTEST_C 584dnl # 585AC_DEFUN([ZFS_LINUX_CONFTEST_C], [ 586test -d build/$2 || mkdir -p build/$2 587cat confdefs.h - <<_ACEOF >build/$2/$2.c 588$1 589_ACEOF 590]) 591 592dnl # 593dnl # ZFS_LINUX_CONFTEST_MAKEFILE 594dnl # 595dnl # $1 - test case name 596dnl # $2 - add to top-level Makefile 597dnl # $3 - additional build flags 598dnl # 599AC_DEFUN([ZFS_LINUX_CONFTEST_MAKEFILE], [ 600 test -d build || mkdir -p build 601 test -d build/$1 || mkdir -p build/$1 602 603 file=build/$1/Makefile 604 605 dnl # Example command line to manually build source. 606 cat - <<_ACEOF >$file 607# Example command line to manually build source 608# make modules -C $LINUX_OBJ $ARCH_UM M=$PWD/build/$1 609 610ccflags-y := -Werror $FRAME_LARGER_THAN 611_ACEOF 612 613 dnl # Additional custom CFLAGS as requested. 614 m4_ifval($3, [echo "ccflags-y += $3" >>$file], []) 615 616 dnl # Test case source 617 echo "obj-m := $1.o" >>$file 618 619 AS_IF([test "x$2" = "xyes"], [echo "obj-m += $1/" >>build/Makefile], []) 620]) 621 622dnl # 623dnl # ZFS_LINUX_TEST_PROGRAM(C)([PROLOGUE], [BODY]) 624dnl # 625m4_define([ZFS_LINUX_TEST_PROGRAM], [ 626#include <linux/module.h> 627$1 628 629int 630main (void) 631{ 632$2 633 ; 634 return 0; 635} 636 637MODULE_DESCRIPTION("conftest"); 638MODULE_AUTHOR(ZFS_META_AUTHOR); 639MODULE_VERSION(ZFS_META_VERSION "-" ZFS_META_RELEASE); 640MODULE_LICENSE($3); 641]) 642 643dnl # 644dnl # ZFS_LINUX_TEST_REMOVE 645dnl # 646dnl # Removes the specified test source and results. 647dnl # 648AC_DEFUN([ZFS_LINUX_TEST_REMOVE], [ 649 test -d build/$1 && rm -Rf build/$1 650 test -f build/Makefile && sed '/$1/d' build/Makefile 651]) 652 653dnl # 654dnl # ZFS_LINUX_COMPILE 655dnl # 656dnl # $1 - build dir 657dnl # $2 - test command 658dnl # $3 - pass command 659dnl # $4 - fail command 660dnl # $5 - set KBUILD_MODPOST_NOFINAL='yes' 661dnl # $6 - set KBUILD_MODPOST_WARN='yes' 662dnl # 663dnl # Used internally by ZFS_LINUX_TEST_{COMPILE,MODPOST} 664dnl # 665AC_DEFUN([ZFS_LINUX_COMPILE], [ 666 AC_ARG_VAR([KERNEL_CC], [C compiler for 667 building kernel modules]) 668 AC_ARG_VAR([KERNEL_LD], [Linker for 669 building kernel modules]) 670 AC_ARG_VAR([KERNEL_LLVM], [Binary option to 671 build kernel modules with LLVM/CLANG toolchain]) 672 AC_TRY_COMMAND([ 673 KBUILD_MODPOST_NOFINAL="$5" KBUILD_MODPOST_WARN="$6" 674 make modules -k -j$TEST_JOBS ${KERNEL_CC:+CC=$KERNEL_CC} 675 ${KERNEL_LD:+LD=$KERNEL_LD} ${KERNEL_LLVM:+LLVM=$KERNEL_LLVM} 676 CONFIG_MODULES=y CFLAGS_MODULE=-DCONFIG_MODULES 677 -C $LINUX_OBJ $ARCH_UM M=$PWD/$1 >$1/build.log 2>&1]) 678 AS_IF([AC_TRY_COMMAND([$2])], [$3], [$4]) 679]) 680 681dnl # 682dnl # ZFS_LINUX_TEST_COMPILE 683dnl # 684dnl # Perform a full compile excluding the final modpost phase. 685dnl # 686AC_DEFUN([ZFS_LINUX_TEST_COMPILE], [ 687 ZFS_LINUX_COMPILE([$2], [test -f $2/build.log], [ 688 mv $2/Makefile $2/Makefile.compile.$1 689 mv $2/build.log $2/build.log.$1 690 ],[ 691 AC_MSG_ERROR([ 692 *** Unable to compile test source to determine kernel interfaces.]) 693 ], [yes], []) 694]) 695 696dnl # 697dnl # ZFS_LINUX_TEST_MODPOST 698dnl # 699dnl # Perform a full compile including the modpost phase. This may 700dnl # be an incremental build if the objects have already been built. 701dnl # 702AC_DEFUN([ZFS_LINUX_TEST_MODPOST], [ 703 ZFS_LINUX_COMPILE([$2], [test -f $2/build.log], [ 704 mv $2/Makefile $2/Makefile.modpost.$1 705 cat $2/build.log >>build/build.log.$1 706 ],[ 707 AC_MSG_ERROR([ 708 *** Unable to modpost test source to determine kernel interfaces.]) 709 ], [], [yes]) 710]) 711 712dnl # 713dnl # Perform the compilation of the test cases in two phases. 714dnl # 715dnl # Phase 1) attempt to build the object files for all of the tests 716dnl # defined by the ZFS_LINUX_TEST_SRC macro. But do not 717dnl # perform the final modpost stage. 718dnl # 719dnl # Phase 2) disable all tests which failed the initial compilation, 720dnl # then invoke the final modpost step for the remaining tests. 721dnl # 722dnl # This allows us efficiently build the test cases in parallel while 723dnl # remaining resilient to build failures which are expected when 724dnl # detecting the available kernel interfaces. 725dnl # 726dnl # The maximum allowed parallelism can be controlled by setting the 727dnl # TEST_JOBS environment variable. Otherwise, it default to $(nproc). 728dnl # 729AC_DEFUN([ZFS_LINUX_TEST_COMPILE_ALL], [ 730 dnl # Phase 1 - Compilation only, final linking is skipped. 731 ZFS_LINUX_TEST_COMPILE([$1], [build]) 732 733 dnl # 734 dnl # Phase 2 - When building external modules disable test cases 735 dnl # which failed to compile and invoke modpost to verify the 736 dnl # final linking. 737 dnl # 738 dnl # Test names suffixed with '_license' call modpost independently 739 dnl # to ensure that a single incompatibility does not result in the 740 dnl # modpost phase exiting early. This check is not performed on 741 dnl # every symbol since the majority are compatible and doing so 742 dnl # would significantly slow down this phase. 743 dnl # 744 dnl # When configuring for builtin (--enable-linux-builtin) 745 dnl # fake the linking step artificially create the expected .ko 746 dnl # files for tests which did compile. This is required for 747 dnl # kernels which do not have loadable module support or have 748 dnl # not yet been built. 749 dnl # 750 AS_IF([test "x$enable_linux_builtin" = "xno"], [ 751 for dir in $(awk '/^obj-m/ { print [$]3 }' \ 752 build/Makefile.compile.$1); do 753 name=${dir%/} 754 AS_IF([test -f build/$name/$name.o], [ 755 AS_IF([test "${name##*_}" = "license"], [ 756 ZFS_LINUX_TEST_MODPOST([$1], 757 [build/$name]) 758 echo "obj-n += $dir" >>build/Makefile 759 ], [ 760 echo "obj-m += $dir" >>build/Makefile 761 ]) 762 ], [ 763 echo "obj-n += $dir" >>build/Makefile 764 ]) 765 done 766 767 ZFS_LINUX_TEST_MODPOST([$1], [build]) 768 ], [ 769 for dir in $(awk '/^obj-m/ { print [$]3 }' \ 770 build/Makefile.compile.$1); do 771 name=${dir%/} 772 AS_IF([test -f build/$name/$name.o], [ 773 touch build/$name/$name.ko 774 ]) 775 done 776 ]) 777]) 778 779dnl # 780dnl # ZFS_LINUX_TEST_SRC 781dnl # 782dnl # $1 - name 783dnl # $2 - global 784dnl # $3 - source 785dnl # $4 - extra cflags 786dnl # $5 - check license-compatibility 787dnl # 788dnl # Check if the test source is buildable at all and then if it is 789dnl # license compatible. 790dnl # 791dnl # N.B because all of the test cases are compiled in parallel they 792dnl # must never depend on the results of previous tests. Each test 793dnl # needs to be entirely independent. 794dnl # 795AC_DEFUN([ZFS_LINUX_TEST_SRC], [ 796 ZFS_LINUX_CONFTEST_C([ZFS_LINUX_TEST_PROGRAM([[$2]], [[$3]], 797 [["Dual BSD/GPL"]])], [$1]) 798 ZFS_LINUX_CONFTEST_MAKEFILE([$1], [yes], [$4]) 799 800 AS_IF([ test -n "$5" ], [ 801 ZFS_LINUX_CONFTEST_C([ZFS_LINUX_TEST_PROGRAM( 802 [[$2]], [[$3]], [[$5]])], [$1_license]) 803 ZFS_LINUX_CONFTEST_MAKEFILE([$1_license], [yes], [$4]) 804 ]) 805]) 806 807dnl # 808dnl # ZFS_LINUX_TEST_RESULT 809dnl # 810dnl # $1 - name of a test source (ZFS_LINUX_TEST_SRC) 811dnl # $2 - run on success (valid .ko generated) 812dnl # $3 - run on failure (unable to compile) 813dnl # 814AC_DEFUN([ZFS_LINUX_TEST_RESULT], [ 815 AS_IF([test -d build/$1], [ 816 AS_IF([test -f build/$1/$1.ko], [$2], [$3]) 817 ], [ 818 AC_MSG_ERROR([ 819 *** No matching source for the "$1" test, check that 820 *** both the test source and result macros refer to the same name. 821 ]) 822 ]) 823]) 824 825dnl # 826dnl # ZFS_LINUX_TEST_ERROR 827dnl # 828dnl # Generic error message which can be used when none of the expected 829dnl # kernel interfaces were detected. 830dnl # 831AC_DEFUN([ZFS_LINUX_TEST_ERROR], [ 832 AC_MSG_ERROR([ 833 *** None of the expected "$1" interfaces were detected. 834 *** This may be because your kernel version is newer than what is 835 *** supported, or you are using a patched custom kernel with 836 *** incompatible modifications. 837 *** 838 *** ZFS Version: $ZFS_META_ALIAS 839 *** Compatible Kernels: $ZFS_META_KVER_MIN - $ZFS_META_KVER_MAX 840 ]) 841]) 842 843dnl # 844dnl # ZFS_LINUX_TEST_RESULT_SYMBOL 845dnl # 846dnl # Like ZFS_LINUX_TEST_RESULT except ZFS_CHECK_SYMBOL_EXPORT is called to 847dnl # verify symbol exports, unless --enable-linux-builtin was provided to 848dnl # configure. 849dnl # 850AC_DEFUN([ZFS_LINUX_TEST_RESULT_SYMBOL], [ 851 AS_IF([ ! test -f build/$1/$1.ko], [ 852 $5 853 ], [ 854 AS_IF([test "x$enable_linux_builtin" != "xyes"], [ 855 ZFS_CHECK_SYMBOL_EXPORT([$2], [$3], [$4], [$5]) 856 ], [ 857 $4 858 ]) 859 ]) 860]) 861 862dnl # 863dnl # ZFS_LINUX_COMPILE_IFELSE 864dnl # 865AC_DEFUN([ZFS_LINUX_COMPILE_IFELSE], [ 866 ZFS_LINUX_TEST_REMOVE([conftest]) 867 868 m4_ifvaln([$1], [ZFS_LINUX_CONFTEST_C([$1], [conftest])]) 869 m4_ifvaln([$5], [ZFS_LINUX_CONFTEST_H([$5], [conftest])], 870 [ZFS_LINUX_CONFTEST_H([], [conftest])]) 871 872 ZFS_LINUX_CONFTEST_MAKEFILE([conftest], [no], 873 [m4_ifvaln([$5], [-I$PWD/build/conftest], [])]) 874 ZFS_LINUX_COMPILE([build/conftest], [$2], [$3], [$4], [], []) 875]) 876 877dnl # 878dnl # ZFS_LINUX_TRY_COMPILE 879dnl # 880dnl # $1 - global 881dnl # $2 - source 882dnl # $3 - run on success (valid .ko generated) 883dnl # $4 - run on failure (unable to compile) 884dnl # 885dnl # When configuring as builtin (--enable-linux-builtin) for kernels 886dnl # without loadable module support (CONFIG_MODULES=n) only the object 887dnl # file is created. See ZFS_LINUX_TEST_COMPILE_ALL for details. 888dnl # 889AC_DEFUN([ZFS_LINUX_TRY_COMPILE], [ 890 AS_IF([test "x$enable_linux_builtin" = "xyes"], [ 891 ZFS_LINUX_COMPILE_IFELSE( 892 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 893 [[ZFS_META_LICENSE]])], 894 [test -f build/conftest/conftest.o], [$3], [$4]) 895 ], [ 896 ZFS_LINUX_COMPILE_IFELSE( 897 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 898 [[ZFS_META_LICENSE]])], 899 [test -f build/conftest/conftest.ko], [$3], [$4]) 900 ]) 901]) 902 903dnl # 904dnl # ZFS_CHECK_SYMBOL_EXPORT 905dnl # 906dnl # Check if a symbol is exported on not by consulting the symbols 907dnl # file, or optionally the source code. 908dnl # 909AC_DEFUN([ZFS_CHECK_SYMBOL_EXPORT], [ 910 grep -q -E '[[[:space:]]]$1[[[:space:]]]' \ 911 $LINUX_OBJ/$LINUX_SYMBOLS 2>/dev/null 912 rc=$? 913 if test $rc -ne 0; then 914 export=0 915 for file in $2; do 916 grep -q -E "EXPORT_SYMBOL.*($1)" \ 917 "$LINUX/$file" 2>/dev/null 918 rc=$? 919 if test $rc -eq 0; then 920 export=1 921 break; 922 fi 923 done 924 if test $export -eq 0; then : 925 $4 926 else : 927 $3 928 fi 929 else : 930 $3 931 fi 932]) 933 934dnl # 935dnl # ZFS_LINUX_TRY_COMPILE_SYMBOL 936dnl # 937dnl # Like ZFS_LINUX_TRY_COMPILER except ZFS_CHECK_SYMBOL_EXPORT is called 938dnl # to verify symbol exports, unless --enable-linux-builtin was provided 939dnl # to configure. 940dnl # 941AC_DEFUN([ZFS_LINUX_TRY_COMPILE_SYMBOL], [ 942 ZFS_LINUX_TRY_COMPILE([$1], [$2], [rc=0], [rc=1]) 943 if test $rc -ne 0; then : 944 $6 945 else 946 if test "x$enable_linux_builtin" != xyes; then 947 ZFS_CHECK_SYMBOL_EXPORT([$3], [$4], [rc=0], [rc=1]) 948 fi 949 if test $rc -ne 0; then : 950 $6 951 else : 952 $5 953 fi 954 fi 955]) 956 957dnl # 958dnl # ZFS_LINUX_TRY_COMPILE_HEADER 959dnl # like ZFS_LINUX_TRY_COMPILE, except the contents conftest.h are 960dnl # provided via the fifth parameter 961dnl # 962AC_DEFUN([ZFS_LINUX_TRY_COMPILE_HEADER], [ 963 AS_IF([test "x$enable_linux_builtin" = "xyes"], [ 964 ZFS_LINUX_COMPILE_IFELSE( 965 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 966 [[ZFS_META_LICENSE]])], 967 [test -f build/conftest/conftest.o], [$3], [$4], [$5]) 968 ], [ 969 ZFS_LINUX_COMPILE_IFELSE( 970 [ZFS_LINUX_TEST_PROGRAM([[$1]], [[$2]], 971 [[ZFS_META_LICENSE]])], 972 [test -f build/conftest/conftest.ko], [$3], [$4], [$5]) 973 ]) 974]) 975 976dnl # 977dnl # AS_VERSION_COMPARE_LE 978dnl # like AS_VERSION_COMPARE_LE, but runs $3 if (and only if) $1 <= $2 979dnl # AS_VERSION_COMPARE_LE (version-1, version-2, [action-if-less-or-equal], [action-if-greater]) 980dnl # 981AC_DEFUN([AS_VERSION_COMPARE_LE], [ 982 AS_VERSION_COMPARE([$1], [$2], [$3], [$3], [$4]) 983]) 984 985dnl # 986dnl # ZFS_LINUX_REQUIRE_API 987dnl # like ZFS_LINUX_TEST_ERROR, except only fails if the kernel is 988dnl # at least some specified version. 989dnl # 990AC_DEFUN([ZFS_LINUX_REQUIRE_API], [ 991 AS_VERSION_COMPARE_LE([$2], [$kernsrcver], [ 992 AC_MSG_ERROR([ 993 *** None of the expected "$1" interfaces were detected. This 994 *** interface is expected for kernels version "$2" and above. 995 *** This may be because your kernel version is newer than what is 996 *** supported, or you are using a patched custom kernel with 997 *** incompatible modifications. Newer kernels may have incompatible 998 *** APIs. 999 *** 1000 *** ZFS Version: $ZFS_META_ALIAS 1001 *** Compatible Kernels: $ZFS_META_KVER_MIN - $ZFS_META_KVER_MAX 1002 ]) 1003 ], [ 1004 AC_MSG_RESULT(no) 1005 ]) 1006]) 1007