config/kernel.m4

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