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