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Revert "Skip GPL-only symbols test when cross-compiling"
[mirror_spl.git] / config / spl-build.m4
CommitLineData
716154c5
BB		 1###############################################################################
2# Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
3# Copyright (C) 2007 The Regents of the University of California.
4# Written by Brian Behlendorf <behlendorf1@llnl.gov>.
5###############################################################################
6# SPL_AC_CONFIG_KERNEL: Default SPL kernel configuration.
7###############################################################################
8
86933a6e
BB		 9AC_DEFUN([SPL_AC_CONFIG_KERNEL], [
10 SPL_AC_KERNEL
11
86933a6e
BB		 12 if test "${LINUX_OBJ}" != "${LINUX}"; then
13 KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ"
14 fi
86933a6e 15 AC_SUBST(KERNELMAKE_PARAMS)
a7958f7e
BB		 16
17 KERNELCPPFLAGS="$KERNELCPPFLAGS -Wstrict-prototypes"
86933a6e
BB		 18 AC_SUBST(KERNELCPPFLAGS)
19
20 SPL_AC_DEBUG
21 SPL_AC_DEBUG_KMEM
055ffd98 22 SPL_AC_DEBUG_KMEM_TRACKING
0408008b 23 SPL_AC_TEST_MODULE
5e9b5d83 24 SPL_AC_ATOMIC_SPINLOCK
c3d9c0df 25 SPL_AC_SHRINKER_CALLBACK
79a3bf13 26 SPL_AC_CTL_NAME
1ddf9722 27 SPL_AC_PDE_DATA
a54718cf 28 SPL_AC_SET_FS_PWD_WITH_CONST
86933a6e
BB		 29 SPL_AC_2ARGS_VFS_UNLINK
30 SPL_AC_4ARGS_VFS_RENAME
0d0b5237 31 SPL_AC_2ARGS_VFS_FSYNC
bbdc6ae4 32 SPL_AC_INODE_TRUNCATE_RANGE
9b2048c2 33 SPL_AC_FS_STRUCT_SPINLOCK
f7fd6ddd 34 SPL_AC_KUIDGID_T
e811949a 35 SPL_AC_PUT_TASK_STRUCT
1c7b3eaf 36 SPL_AC_KERNEL_FALLOCATE
42b3ce62
BB		 37 SPL_AC_CONFIG_ZLIB_INFLATE
38 SPL_AC_CONFIG_ZLIB_DEFLATE
3dfc591a 39 SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE
a55bcaad 40 SPL_AC_SHRINK_CONTROL_STRUCT
588d9004 41 SPL_AC_RWSEM_SPINLOCK_IS_RAW
10087fe1 42 SPL_AC_SCHED_RT_HEADER
2a305c34 43 SPL_AC_2ARGS_VFS_GETATTR
184c6873 44 SPL_AC_USLEEP_RANGE
a073aeb0 45 SPL_AC_KMEM_CACHE_ALLOCFLAGS
2fc44f66 46 SPL_AC_WAIT_ON_BIT
86933a6e
BB		 47])
48
49AC_DEFUN([SPL_AC_MODULE_SYMVERS], [
bb339d06 50 modpost=$LINUX/scripts/Makefile.modpost
86933a6e 51 AC_MSG_CHECKING([kernel file name for module symbols])
0408008b 52 if test "x$enable_linux_builtin" != xyes -a -f "$modpost"; then
bb339d06
BB		 53 if grep -q Modules.symvers $modpost; then
54 LINUX_SYMBOLS=Modules.symvers
55 else
56 LINUX_SYMBOLS=Module.symvers
57 fi
912fd84d
BB		 58
59 if ! test -f "$LINUX_OBJ/$LINUX_SYMBOLS"; then
60 AC_MSG_ERROR([
61 *** Please make sure the kernel devel package for your distribution
7a8a6393 62 *** is installed. If you are building with a custom kernel, make sure the
912fd84d
BB		 63 *** kernel is configured, built, and the '--with-linux=PATH' configure
64 *** option refers to the location of the kernel source.])
65 fi
86933a6e 66 else
bb339d06 67 LINUX_SYMBOLS=NONE
86933a6e
BB		 68 fi
69 AC_MSG_RESULT($LINUX_SYMBOLS)
70 AC_SUBST(LINUX_SYMBOLS)
71])
72
57d86234 73AC_DEFUN([SPL_AC_KERNEL], [
57d86234 74 AC_ARG_WITH([linux],
75 AS_HELP_STRING([--with-linux=PATH],
76 [Path to kernel source]),
39a3d2a4 77 [kernelsrc="$withval"])
57d86234 78
79 AC_ARG_WITH([linux-obj],
80 AS_HELP_STRING([--with-linux-obj=PATH],
81 [Path to kernel build objects]),
82 [kernelbuild="$withval"])
83
84 AC_MSG_CHECKING([kernel source directory])
85 if test -z "$kernelsrc"; then
22ccfaa8
BB		 86 if test -e "/lib/modules/$(uname -r)/source"; then
87 headersdir="/lib/modules/$(uname -r)/source"
88 sourcelink=$(readlink -f "$headersdir")
89 elif test -e "/lib/modules/$(uname -r)/build"; then
90 headersdir="/lib/modules/$(uname -r)/build"
534c4e38
BM		 91 sourcelink=$(readlink -f "$headersdir")
92 else
93 sourcelink=$(ls -1d /usr/src/kernels/* \
723aa3b0 94 /usr/src/linux-* \
534c4e38
BM		 95 2>/dev/null | grep -v obj | tail -1)
96 fi
57d86234 97
8fd4e3af 98 if test -n "$sourcelink" && test -e ${sourcelink}; then
d4326403 99 kernelsrc=`readlink -f ${sourcelink}`
d4326403 100 else
251677e9 101 kernelsrc="[Not found]"
57d86234 102 fi
c5f70460
BB		 103 else
104 if test "$kernelsrc" = "NONE"; then
105 kernsrcver=NONE
106 fi
57d86234 107 fi
108
109 AC_MSG_RESULT([$kernelsrc])
251677e9
BB		 110 if test ! -d "$kernelsrc"; then
111 AC_MSG_ERROR([
112 *** Please make sure the kernel devel package for your distribution
7a8a6393 113 *** is installed and then try again. If that fails, you can specify the
251677e9
BB		 114 *** location of the kernel source with the '--with-linux=PATH' option.])
115 fi
116
57d86234 117 AC_MSG_CHECKING([kernel build directory])
39a3d2a4 118 if test -z "$kernelbuild"; then
22ccfaa8
BB		 119 if test -e "/lib/modules/$(uname -r)/build"; then
120 kernelbuild=`readlink -f /lib/modules/$(uname -r)/build`
121 elif test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}; then
e2d28a37
BB		 122 kernelbuild=${kernelsrc}-obj/${target_cpu}/${target_cpu}
123 elif test -d ${kernelsrc}-obj/${target_cpu}/default; then
124 kernelbuild=${kernelsrc}-obj/${target_cpu}/default
125 elif test -d `dirname ${kernelsrc}`/build-${target_cpu}; then
126 kernelbuild=`dirname ${kernelsrc}`/build-${target_cpu}
39a3d2a4
BB		 127 else
128 kernelbuild=${kernelsrc}
129 fi
bf338d8d 130 fi
57d86234 131 AC_MSG_RESULT([$kernelbuild])
132
133 AC_MSG_CHECKING([kernel source version])
fd921c2e
BB		 134 utsrelease1=$kernelbuild/include/linux/version.h
135 utsrelease2=$kernelbuild/include/linux/utsrelease.h
136 utsrelease3=$kernelbuild/include/generated/utsrelease.h
137 if test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1; then
138 utsrelease=linux/version.h
139 elif test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2; then
140 utsrelease=linux/utsrelease.h
141 elif test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3; then
142 utsrelease=generated/utsrelease.h
143 fi
57d86234 144
fd921c2e
BB		 145 if test "$utsrelease"; then
146 kernsrcver=`(echo "#include <$utsrelease>";
57d86234 147 echo "kernsrcver=UTS_RELEASE") |
d4326403 148 cpp -I $kernelbuild/include |
57d86234 149 grep "^kernsrcver=" | cut -d \" -f 2`
57d86234 150
fd921c2e
BB		 151 if test -z "$kernsrcver"; then
152 AC_MSG_RESULT([Not found])
153 AC_MSG_ERROR([*** Cannot determine kernel version.])
154 fi
155 else
57d86234 156 AC_MSG_RESULT([Not found])
0408008b
ED		 157 if test "x$enable_linux_builtin" != xyes; then
158 AC_MSG_ERROR([*** Cannot find UTS_RELEASE definition.])
159 else
160 AC_MSG_ERROR([
161 *** Cannot find UTS_RELEASE definition.
162 *** Please run 'make prepare' inside the kernel source tree.])
163 fi
57d86234 164 fi
165
166 AC_MSG_RESULT([$kernsrcver])
167
57d86234 168 LINUX=${kernelsrc}
169 LINUX_OBJ=${kernelbuild}
c5f70460
BB		 170 LINUX_VERSION=${kernsrcver}
171
57d86234 172 AC_SUBST(LINUX)
173 AC_SUBST(LINUX_OBJ)
c5f70460 174 AC_SUBST(LINUX_VERSION)
57d86234 175
86933a6e 176 SPL_AC_MODULE_SYMVERS
2e0e7e69
BB		 177])
178
287b2fb1
BB		 179dnl #
180dnl # Default SPL user configuration
181dnl #
ad35b6a6 182AC_DEFUN([SPL_AC_CONFIG_USER], [])
287b2fb1
BB		 183
184dnl #
185dnl # Check for rpm+rpmbuild to build RPM packages. If these tools
7a8a6393 186dnl # are missing, it is non-fatal, but you will not be able to build
287b2fb1
BB		 187dnl # RPM packages and will be warned if you try too.
188dnl #
7a8a6393 189dnl # By default, the generic spec file will be used because it requires
493972c8
BB		 190dnl # minimal dependencies. Distribution specific spec files can be
191dnl # placed under the 'rpm/<distribution>' directory and enabled using
192dnl # the --with-spec=<distribution> configure option.
193dnl #
287b2fb1
BB		 194AC_DEFUN([SPL_AC_RPM], [
195 RPM=rpm
196 RPMBUILD=rpmbuild
197
198 AC_MSG_CHECKING([whether $RPM is available])
199 AS_IF([tmp=$($RPM --version 2>/dev/null)], [
200 RPM_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }')
201 HAVE_RPM=yes
202 AC_MSG_RESULT([$HAVE_RPM ($RPM_VERSION)])
203 ],[
204 HAVE_RPM=no
205 AC_MSG_RESULT([$HAVE_RPM])
206 ])
207
208 AC_MSG_CHECKING([whether $RPMBUILD is available])
209 AS_IF([tmp=$($RPMBUILD --version 2>/dev/null)], [
210 RPMBUILD_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }')
211 HAVE_RPMBUILD=yes
212 AC_MSG_RESULT([$HAVE_RPMBUILD ($RPMBUILD_VERSION)])
213 ],[
214 HAVE_RPMBUILD=no
215 AC_MSG_RESULT([$HAVE_RPMBUILD])
216 ])
217
8d9a23e8 218 RPM_DEFINE_COMMON='--define "$(DEBUG_SPL) 1" --define "$(DEBUG_KMEM) 1" --define "$(DEBUG_KMEM_TRACKING) 1"'
493972c8
BB		 219 RPM_DEFINE_UTIL=
220 RPM_DEFINE_KMOD='--define "kernels $(LINUX_VERSION)"'
221 RPM_DEFINE_DKMS=
222
223 SRPM_DEFINE_COMMON='--define "build_src_rpm 1"'
224 SRPM_DEFINE_UTIL=
225 SRPM_DEFINE_KMOD=
226 SRPM_DEFINE_DKMS=
227
228 RPM_SPEC_DIR="rpm/generic"
229 AC_ARG_WITH([spec],
230 AS_HELP_STRING([--with-spec=SPEC],
fade6b00 231 [Spec files 'generic|redhat']),
493972c8
BB		 232 [RPM_SPEC_DIR="rpm/$withval"])
233
234 AC_MSG_CHECKING([whether spec files are available])
235 AC_MSG_RESULT([yes ($RPM_SPEC_DIR/*.spec.in)])
236
287b2fb1
BB		 237 AC_SUBST(HAVE_RPM)
238 AC_SUBST(RPM)
239 AC_SUBST(RPM_VERSION)
240
241 AC_SUBST(HAVE_RPMBUILD)
242 AC_SUBST(RPMBUILD)
243 AC_SUBST(RPMBUILD_VERSION)
493972c8
BB		 244
245 AC_SUBST(RPM_SPEC_DIR)
246 AC_SUBST(RPM_DEFINE_UTIL)
247 AC_SUBST(RPM_DEFINE_KMOD)
248 AC_SUBST(RPM_DEFINE_DKMS)
249 AC_SUBST(RPM_DEFINE_COMMON)
250 AC_SUBST(SRPM_DEFINE_UTIL)
251 AC_SUBST(SRPM_DEFINE_KMOD)
252 AC_SUBST(SRPM_DEFINE_DKMS)
253 AC_SUBST(SRPM_DEFINE_COMMON)
287b2fb1
BB		 254])
255
256dnl #
257dnl # Check for dpkg+dpkg-buildpackage to build DEB packages. If these
258dnl # tools are missing it is non-fatal but you will not be able to build
259dnl # DEB packages and will be warned if you try too.
260dnl #
261AC_DEFUN([SPL_AC_DPKG], [
262 DPKG=dpkg
263 DPKGBUILD=dpkg-buildpackage
264
265 AC_MSG_CHECKING([whether $DPKG is available])
266 AS_IF([tmp=$($DPKG --version 2>/dev/null)], [
267 DPKG_VERSION=$(echo $tmp | $AWK '/Debian/ { print $[7] }')
268 HAVE_DPKG=yes
269 AC_MSG_RESULT([$HAVE_DPKG ($DPKG_VERSION)])
270 ],[
271 HAVE_DPKG=no
272 AC_MSG_RESULT([$HAVE_DPKG])
273 ])
274
275 AC_MSG_CHECKING([whether $DPKGBUILD is available])
276 AS_IF([tmp=$($DPKGBUILD --version 2>/dev/null)], [
277 DPKGBUILD_VERSION=$(echo $tmp | \
278 $AWK '/Debian/ { print $[4] }' | cut -f-4 -d'.')
279 HAVE_DPKGBUILD=yes
280 AC_MSG_RESULT([$HAVE_DPKGBUILD ($DPKGBUILD_VERSION)])
281 ],[
282 HAVE_DPKGBUILD=no
283 AC_MSG_RESULT([$HAVE_DPKGBUILD])
284 ])
285
286 AC_SUBST(HAVE_DPKG)
287 AC_SUBST(DPKG)
288 AC_SUBST(DPKG_VERSION)
289
290 AC_SUBST(HAVE_DPKGBUILD)
291 AC_SUBST(DPKGBUILD)
292 AC_SUBST(DPKGBUILD_VERSION)
293])
294
295dnl #
296dnl # Until native packaging for various different packing systems
297dnl # can be added the least we can do is attempt to use alien to
298dnl # convert the RPM packages to the needed package type. This is
299dnl # a hack but so far it has worked reasonable well.
300dnl #
301AC_DEFUN([SPL_AC_ALIEN], [
302 ALIEN=alien
303
304 AC_MSG_CHECKING([whether $ALIEN is available])
305 AS_IF([tmp=$($ALIEN --version 2>/dev/null)], [
306 ALIEN_VERSION=$(echo $tmp | $AWK '{ print $[3] }')
307 HAVE_ALIEN=yes
308 AC_MSG_RESULT([$HAVE_ALIEN ($ALIEN_VERSION)])
309 ],[
310 HAVE_ALIEN=no
311 AC_MSG_RESULT([$HAVE_ALIEN])
312 ])
313
314 AC_SUBST(HAVE_ALIEN)
315 AC_SUBST(ALIEN)
316 AC_SUBST(ALIEN_VERSION)
317])
318
319dnl #
320dnl # Using the VENDOR tag from config.guess set the default
321dnl # package type for 'make pkg': (rpm | deb | tgz)
322dnl #
323AC_DEFUN([SPL_AC_DEFAULT_PACKAGE], [
73fc084e 324 AC_MSG_CHECKING([linux distribution])
a3a69b74
BB		 325 if test -f /etc/toss-release ; then
326 VENDOR=toss ;
73fc084e
BB		 327 elif test -f /etc/fedora-release ; then
328 VENDOR=fedora ;
a3a69b74
BB		 329 elif test -f /etc/redhat-release ; then
330 VENDOR=redhat ;
331 elif test -f /etc/gentoo-release ; then
332 VENDOR=gentoo ;
cd2817f8
PS		 333 elif test -f /etc/arch-release ; then
334 VENDOR=arch ;
73fc084e
BB		 335 elif test -f /etc/SuSE-release ; then
336 VENDOR=sles ;
337 elif test -f /etc/slackware-version ; then
338 VENDOR=slackware ;
a3a69b74
BB		 339 elif test -f /etc/lunar.release ; then
340 VENDOR=lunar ;
341 elif test -f /etc/lsb-release ; then
342 VENDOR=ubuntu ;
343 elif test -f /etc/debian_version ; then
344 VENDOR=debian ;
73fc084e
BB		 345 else
346 VENDOR= ;
347 fi
348 AC_MSG_RESULT([$VENDOR])
349 AC_SUBST(VENDOR)
287b2fb1
BB		 350
351 AC_MSG_CHECKING([default package type])
352 case "$VENDOR" in
a3a69b74
BB		 353 toss) DEFAULT_PACKAGE=rpm ;;
354 redhat) DEFAULT_PACKAGE=rpm ;;
355 fedora) DEFAULT_PACKAGE=rpm ;;
356 gentoo) DEFAULT_PACKAGE=tgz ;;
5f0a4b08 357 arch) DEFAULT_PACKAGE=tgz ;;
a3a69b74
BB		 358 sles) DEFAULT_PACKAGE=rpm ;;
359 slackware) DEFAULT_PACKAGE=tgz ;;
360 lunar) DEFAULT_PACKAGE=tgz ;;
361 ubuntu) DEFAULT_PACKAGE=deb ;;
362 debian) DEFAULT_PACKAGE=deb ;;
363 *) DEFAULT_PACKAGE=rpm ;;
287b2fb1
BB		 364 esac
365
366 AC_MSG_RESULT([$DEFAULT_PACKAGE])
367 AC_SUBST(DEFAULT_PACKAGE)
368])
369
370dnl #
371dnl # Default SPL user configuration
372dnl #
373AC_DEFUN([SPL_AC_PACKAGE], [
0b14b9f3 374 SPL_AC_DEFAULT_PACKAGE
287b2fb1
BB		 375 SPL_AC_RPM
376 SPL_AC_DPKG
377 SPL_AC_ALIEN
287b2fb1
BB		 378])
379
6a1c3d41 380AC_DEFUN([SPL_AC_LICENSE], [
62032954
BB		 381 AC_MSG_CHECKING([spl author])
382 AC_MSG_RESULT([$SPL_META_AUTHOR])
383
86933a6e 384 AC_MSG_CHECKING([spl license])
62032954 385 AC_MSG_RESULT([$SPL_META_LICENSE])
86933a6e
BB		 386])
387
388AC_DEFUN([SPL_AC_CONFIG], [
0408008b
ED		 389 SPL_CONFIG=all
390 AC_ARG_WITH([config],
391 AS_HELP_STRING([--with-config=CONFIG],
392 [Config file 'kernel|user|all|srpm']),
393 [SPL_CONFIG="$withval"])
394 AC_ARG_ENABLE([linux-builtin],
395 [AC_HELP_STRING([--enable-linux-builtin],
396 [Configure for builtin in-tree kernel modules @<:@default=no@:>@])],
397 [],
398 [enable_linux_builtin=no])
399
400 AC_MSG_CHECKING([spl config])
401 AC_MSG_RESULT([$SPL_CONFIG]);
402 AC_SUBST(SPL_CONFIG)
403
404 case "$SPL_CONFIG" in
405 kernel) SPL_AC_CONFIG_KERNEL ;;
406 user) SPL_AC_CONFIG_USER ;;
407 all) SPL_AC_CONFIG_KERNEL
408 SPL_AC_CONFIG_USER ;;
c1541dfe 409 srpm) ;;
0408008b
ED		 410 *)
411 AC_MSG_RESULT([Error!])
412 AC_MSG_ERROR([Bad value "$SPL_CONFIG" for --with-config,
413 user kernel|user|all|srpm]) ;;
414 esac
415
416 AM_CONDITIONAL([CONFIG_USER],
417 [test "$SPL_CONFIG" = user -o "$SPL_CONFIG" = all])
418 AM_CONDITIONAL([CONFIG_KERNEL],
419 [test "$SPL_CONFIG" = kernel -o "$SPL_CONFIG" = all] &&
420 [test "x$enable_linux_builtin" != xyes ])
6a1c3d41 421])
422
055ffd98
BB		 423dnl #
424dnl # Enable if the SPL should be compiled with internal debugging enabled.
425dnl # By default this support is disabled.
426dnl #
57d86234 427AC_DEFUN([SPL_AC_DEBUG], [
c950d148 428 AC_MSG_CHECKING([whether debugging is enabled])
055ffd98
BB		 429 AC_ARG_ENABLE([debug],
430 [AS_HELP_STRING([--enable-debug],
431 [Enable generic debug support @<:@default=no@:>@])],
432 [],
433 [enable_debug=no])
434
435 AS_IF([test "x$enable_debug" = xyes],
c950d148 436 [
c950d148
BB		 437 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG -Werror"
438 DEBUG_CFLAGS="-DDEBUG -Werror"
3c208a54
BB		 439 DEBUG_SPL="_with_debug"
440 ], [
c950d148
BB		 441 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DNDEBUG"
442 DEBUG_CFLAGS="-DNDEBUG"
3c208a54 443 DEBUG_SPL="_without_debug"
c950d148 444 ])
055ffd98 445
c950d148 446 AC_SUBST(DEBUG_CFLAGS)
3c208a54 447 AC_SUBST(DEBUG_SPL)
055ffd98 448 AC_MSG_RESULT([$enable_debug])
57d86234 449])
450
055ffd98
BB		 451dnl #
452dnl # Enabled by default it provides a minimal level of memory tracking.
453dnl # A total count of bytes allocated is kept for each alloc and free.
454dnl # Then at module unload time a report to the console will be printed
9eb361aa 455dnl # if memory was leaked.
055ffd98 456dnl #
57d86234 457AC_DEFUN([SPL_AC_DEBUG_KMEM], [
055ffd98
BB		 458 AC_ARG_ENABLE([debug-kmem],
459 [AS_HELP_STRING([--enable-debug-kmem],
9eb361aa 460 [Enable basic kmem accounting @<:@default=no@:>@])],
055ffd98 461 [],
9eb361aa 462 [enable_debug_kmem=no])
57d86234 463
055ffd98 464 AS_IF([test "x$enable_debug_kmem" = xyes],
3c208a54
BB		 465 [
466 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM"
467 DEBUG_KMEM="_with_debug_kmem"
468 AC_DEFINE([DEBUG_KMEM], [1],
055ffd98 469 [Define to 1 to enable basic kmem accounting])
3c208a54
BB		 470 ], [
471 DEBUG_KMEM="_without_debug_kmem"
472 ])
055ffd98 473
3c208a54 474 AC_SUBST(DEBUG_KMEM)
055ffd98
BB		 475 AC_MSG_CHECKING([whether basic kmem accounting is enabled])
476 AC_MSG_RESULT([$enable_debug_kmem])
57d86234 477])
478
055ffd98
BB		 479dnl #
480dnl # Disabled by default it provides detailed memory tracking. This
481dnl # feature also requires --enable-debug-kmem to be set. When enabled
482dnl # not only will total bytes be tracked but also the location of every
483dnl # alloc and free. When the SPL module is unloaded a list of all leaked
484dnl # addresses and where they were allocated will be dumped to the console.
485dnl # Enabling this feature has a significant impact on performance but it
486dnl # makes finding memory leaks pretty straight forward.
487dnl #
488AC_DEFUN([SPL_AC_DEBUG_KMEM_TRACKING], [
489 AC_ARG_ENABLE([debug-kmem-tracking],
490 [AS_HELP_STRING([--enable-debug-kmem-tracking],
491 [Enable detailed kmem tracking @<:@default=no@:>@])],
492 [],
493 [enable_debug_kmem_tracking=no])
494
495 AS_IF([test "x$enable_debug_kmem_tracking" = xyes],
3c208a54
BB		 496 [
497 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM_TRACKING"
498 DEBUG_KMEM_TRACKING="_with_debug_kmem_tracking"
499 AC_DEFINE([DEBUG_KMEM_TRACKING], [1],
055ffd98 500 [Define to 1 to enable detailed kmem tracking])
3c208a54
BB		 501 ], [
502 DEBUG_KMEM_TRACKING="_without_debug_kmem_tracking"
503 ])
055ffd98 504
3c208a54 505 AC_SUBST(DEBUG_KMEM_TRACKING)
055ffd98
BB		 506 AC_MSG_CHECKING([whether detailed kmem tracking is enabled])
507 AC_MSG_RESULT([$enable_debug_kmem_tracking])
57d86234 508])
509
510dnl #
511dnl # SPL_LINUX_CONFTEST
512dnl #
513AC_DEFUN([SPL_LINUX_CONFTEST], [
dbe561d8 514cat confdefs.h - <<_ACEOF >conftest.c
57d86234 515$1
516_ACEOF
517])
518
519dnl #
520dnl # SPL_LANG_PROGRAM(C)([PROLOGUE], [BODY])
521dnl #
522m4_define([SPL_LANG_PROGRAM], [
523$1
524int
525main (void)
526{
527dnl Do *not* indent the following line: there may be CPP directives.
528dnl Don't move the `;' right after for the same reason.
529$2
530 ;
531 return 0;
532}
533])
534
535dnl #
536dnl # SPL_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE
537dnl #
538AC_DEFUN([SPL_LINUX_COMPILE_IFELSE], [
c5f70460 539 m4_ifvaln([$1], [SPL_LINUX_CONFTEST([$1])])
df7cc5bc 540 rm -Rf build && mkdir -p build && touch build/conftest.mod.c
c5f70460 541 echo "obj-m := conftest.o" >build/Makefile
df7cc5bc
ED		 542 modpost_flag=''
543 test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage
c5f70460 544 AS_IF(
df7cc5bc
ED		 545 [AC_TRY_COMMAND(cp conftest.c build && make [$2] -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build $modpost_flag) >/dev/null && AC_TRY_COMMAND([$3])],
546 [$4],
547 [_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])]
c5f70460
BB		 548 )
549 rm -Rf build
57d86234 550])
551
552dnl #
553dnl # SPL_LINUX_TRY_COMPILE like AC_TRY_COMPILE
554dnl #
555AC_DEFUN([SPL_LINUX_TRY_COMPILE],
556 [SPL_LINUX_COMPILE_IFELSE(
d50bd9e2 557 [AC_LANG_SOURCE([SPL_LANG_PROGRAM([[$1]], [[$2]])])],
558 [modules],
559 [test -s build/conftest.o],
560 [$3], [$4])
57d86234 561])
562
57d86234 563dnl #
564dnl # SPL_CHECK_SYMBOL_EXPORT
565dnl # check symbol exported or not
566dnl #
723aa3b0 567AC_DEFUN([SPL_CHECK_SYMBOL_EXPORT], [
2e0e7e69
BB		 568 grep -q -E '[[[:space:]]]$1[[[:space:]]]' \
569 $LINUX_OBJ/Module*.symvers 2>/dev/null
57d86234 570 rc=$?
571 if test $rc -ne 0; then
572 export=0
573 for file in $2; do
2e0e7e69
BB		 574 grep -q -E "EXPORT_SYMBOL.*($1)" \
575 "$LINUX_OBJ/$file" 2>/dev/null
57d86234 576 rc=$?
723aa3b0
ED		 577 if test $rc -eq 0; then
578 export=1
579 break;
580 fi
57d86234 581 done
723aa3b0 582 if test $export -eq 0; then :
57d86234 583 $4
723aa3b0 584 else :
57d86234 585 $3
586 fi
723aa3b0 587 else :
57d86234 588 $3
589 fi
590])
591
723aa3b0
ED		 592dnl #
593dnl # SPL_LINUX_TRY_COMPILE_SYMBOL
594dnl # like SPL_LINUX_TRY_COMPILE, except SPL_CHECK_SYMBOL_EXPORT
595dnl # is called if not compiling for builtin
596dnl #
597AC_DEFUN([SPL_LINUX_TRY_COMPILE_SYMBOL], [
598 SPL_LINUX_TRY_COMPILE([$1], [$2], [rc=0], [rc=1])
599 if test $rc -ne 0; then :
600 $6
601 else
602 if test "x$enable_linux_builtin" != xyes; then
603 SPL_CHECK_SYMBOL_EXPORT([$3], [$4], [rc=0], [rc=1])
604 fi
605 if test $rc -ne 0; then :
606 $6
607 else :
608 $5
609 fi
610 fi
611])
612
12ff95ff
BB		 613dnl #
614dnl # SPL_CHECK_SYMBOL_HEADER
615dnl # check if a symbol prototype is defined in listed headers.
616dnl #
617AC_DEFUN([SPL_CHECK_SYMBOL_HEADER], [
618 AC_MSG_CHECKING([whether symbol $1 exists in header])
619 header=0
620 for file in $3; do
621 grep -q "$2" "$LINUX/$file" 2>/dev/null
622 rc=$?
723aa3b0
ED		 623 if test $rc -eq 0; then
624 header=1
625 break;
626 fi
12ff95ff
BB		 627 done
628 if test $header -eq 0; then
629 AC_MSG_RESULT([no])
630 $5
631 else
632 AC_MSG_RESULT([yes])
633 $4
634 fi
635])
636
86de8532 637dnl #
638dnl # SPL_CHECK_HEADER
639dnl # check whether header exists and define HAVE_$2_HEADER
640dnl #
641AC_DEFUN([SPL_CHECK_HEADER],
642 [AC_MSG_CHECKING([whether header $1 exists])
643 SPL_LINUX_TRY_COMPILE([
d50bd9e2 644 #include <$1>
86de8532 645 ],[
646 return 0;
647 ],[
648 AC_DEFINE(HAVE_$2_HEADER, 1, [$1 exists])
649 AC_MSG_RESULT(yes)
650 $3
651 ],[
652 AC_MSG_RESULT(no)
653 $4
654 ])
655])
6a6cafbe 656
0408008b 657dnl #
62032954
BB		 658dnl # Basic toolchain sanity check. Verify that kernel modules can
659dnl # be built and which symbols can be used.
0408008b
ED		 660dnl #
661AC_DEFUN([SPL_AC_TEST_MODULE],
662 [AC_MSG_CHECKING([whether modules can be built])
663 SPL_LINUX_TRY_COMPILE([],[],[
664 AC_MSG_RESULT([yes])
665 ],[
666 AC_MSG_RESULT([no])
667 if test "x$enable_linux_builtin" != xyes; then
668 AC_MSG_ERROR([*** Unable to build an empty module.])
669 else
670 AC_MSG_ERROR([
671 *** Unable to build an empty module.
672 *** Please run 'make scripts' inside the kernel source tree.])
673 fi
674 ])
62032954
BB		 675
676 AC_RUN_IFELSE([
677 AC_LANG_PROGRAM([
678 #include "$LINUX/include/linux/license.h"
679 ], [
680 return !license_is_gpl_compatible("$SPL_META_LICENSE");
681 ])
682 ], [
683 AC_DEFINE([SPL_IS_GPL_COMPATIBLE], [1],
684 [Define to 1 if GPL-only symbols can be used])
685 ], [
686 ])
0408008b
ED		 687])
688
57d86234 689dnl #
d04c8a56
BB		 690dnl # Use the atomic implemenation based on global spinlocks. This
691dnl # should only be needed by 32-bit kernels which do not provide
692dnl # the atomic64_* API. It may be optionally enabled as a fallback
693dnl # if problems are observed with the direct mapping to the native
694dnl # Linux atomic operations. You may not disable atomic spinlocks
695dnl # if you kernel does not an atomic64_* API.
57d86234 696dnl #
d04c8a56
BB		 697AC_DEFUN([SPL_AC_ATOMIC_SPINLOCK], [
698 AC_ARG_ENABLE([atomic-spinlocks],
699 [AS_HELP_STRING([--enable-atomic-spinlocks],
700 [Atomic types use spinlocks @<:@default=check@:>@])],
701 [],
702 [enable_atomic_spinlocks=check])
57d86234 703
a0f6da3d 704 SPL_LINUX_TRY_COMPILE([
dd3678fc 705 #include <linux/fs.h>
a0f6da3d 706 ],[
03318641 707 atomic64_t *ptr __attribute__ ((unused));
a0f6da3d 708 ],[
d04c8a56 709 have_atomic64_t=yes
a0f6da3d 710 AC_DEFINE(HAVE_ATOMIC64_T, 1,
d04c8a56 711 [kernel defines atomic64_t])
a0f6da3d 712 ],[
d04c8a56
BB		 713 have_atomic64_t=no
714 ])
715
716 AS_IF([test "x$enable_atomic_spinlocks" = xcheck], [
717 AS_IF([test "x$have_atomic64_t" = xyes], [
718 enable_atomic_spinlocks=no
719 ],[
720 enable_atomic_spinlocks=yes
721 ])
a0f6da3d 722 ])
d04c8a56
BB		 723
724 AS_IF([test "x$enable_atomic_spinlocks" = xyes], [
725 AC_DEFINE([ATOMIC_SPINLOCK], [1],
726 [Atomic types use spinlocks])
727 ],[
728 AS_IF([test "x$have_atomic64_t" = xno], [
729 AC_MSG_FAILURE(
730 [--disable-atomic-spinlocks given but required atomic64 support is unavailable])
731 ])
732 ])
733
734 AC_MSG_CHECKING([whether atomic types use spinlocks])
735 AC_MSG_RESULT([$enable_atomic_spinlocks])
736
737 AC_MSG_CHECKING([whether kernel defines atomic64_t])
738 AC_MSG_RESULT([$have_atomic64_t])
a0f6da3d 739])
740
c3d9c0df 741AC_DEFUN([SPL_AC_SHRINKER_CALLBACK],[
23aa63cb
BB		 742 tmp_flags="$EXTRA_KCFLAGS"
743 EXTRA_KCFLAGS="-Werror"
c3d9c0df
RY		 744 dnl #
745 dnl # 2.6.23 to 2.6.34 API change
746 dnl # ->shrink(int nr_to_scan, gfp_t gfp_mask)
747 dnl #
748 AC_MSG_CHECKING([whether old 2-argument shrinker exists])
23aa63cb
BB		 749 SPL_LINUX_TRY_COMPILE([
750 #include <linux/mm.h>
751
c3d9c0df 752 int shrinker_cb(int nr_to_scan, gfp_t gfp_mask);
23aa63cb
BB		 753 ],[
754 struct shrinker cache_shrinker = {
755 .shrink = shrinker_cb,
756 .seeks = DEFAULT_SEEKS,
757 };
758 register_shrinker(&cache_shrinker);
759 ],[
760 AC_MSG_RESULT(yes)
c3d9c0df
RY		 761 AC_DEFINE(HAVE_2ARGS_OLD_SHRINKER_CALLBACK, 1,
762 [old shrinker callback wants 2 args])
23aa63cb
BB		 763 ],[
764 AC_MSG_RESULT(no)
c3d9c0df
RY		 765 dnl #
766 dnl # 2.6.35 - 2.6.39 API change
767 dnl # ->shrink(struct shrinker *,
768 dnl # int nr_to_scan, gfp_t gfp_mask)
769 dnl #
770 AC_MSG_CHECKING([whether old 3-argument shrinker exists])
771 SPL_LINUX_TRY_COMPILE([
772 #include <linux/mm.h>
773
774 int shrinker_cb(struct shrinker *, int nr_to_scan,
775 gfp_t gfp_mask);
776 ],[
777 struct shrinker cache_shrinker = {
778 .shrink = shrinker_cb,
779 .seeks = DEFAULT_SEEKS,
780 };
781 register_shrinker(&cache_shrinker);
782 ],[
783 AC_MSG_RESULT(yes)
784 AC_DEFINE(HAVE_3ARGS_SHRINKER_CALLBACK, 1,
785 [old shrinker callback wants 3 args])
786 ],[
787 AC_MSG_RESULT(no)
788 dnl #
789 dnl # 3.0 - 3.11 API change
790 dnl # ->shrink(struct shrinker *,
791 dnl # struct shrink_control *sc)
792 dnl #
793 AC_MSG_CHECKING(
794 [whether new 2-argument shrinker exists])
795 SPL_LINUX_TRY_COMPILE([
796 #include <linux/mm.h>
797
798 int shrinker_cb(struct shrinker *,
799 struct shrink_control *sc);
800 ],[
801 struct shrinker cache_shrinker = {
802 .shrink = shrinker_cb,
803 .seeks = DEFAULT_SEEKS,
804 };
805 register_shrinker(&cache_shrinker);
806 ],[
807 AC_MSG_RESULT(yes)
808 AC_DEFINE(HAVE_2ARGS_NEW_SHRINKER_CALLBACK, 1,
809 [new shrinker callback wants 2 args])
810 ],[
811 AC_MSG_RESULT(no)
812 dnl #
813 dnl # 3.12 API change,
814 dnl # ->shrink() is logically split in to
815 dnl # ->count_objects() and ->scan_objects()
816 dnl #
817 AC_MSG_CHECKING(
818 [whether ->count_objects callback exists])
819 SPL_LINUX_TRY_COMPILE([
820 #include <linux/mm.h>
821
822 unsigned long shrinker_cb(
823 struct shrinker *,
824 struct shrink_control *sc);
825 ],[
826 struct shrinker cache_shrinker = {
827 .count_objects = shrinker_cb,
828 .scan_objects = shrinker_cb,
829 .seeks = DEFAULT_SEEKS,
830 };
831 register_shrinker(&cache_shrinker);
832 ],[
833 AC_MSG_RESULT(yes)
834 AC_DEFINE(HAVE_SPLIT_SHRINKER_CALLBACK,
835 1, [->count_objects exists])
836 ],[
837 AC_MSG_ERROR(error)
838 ])
839 ])
840 ])
23aa63cb
BB		 841 ])
842 EXTRA_KCFLAGS="$tmp_flags"
843])
844
79a3bf13
BB		 845dnl #
846dnl # 2.6.33 API change,
847dnl # Removed .ctl_name from struct ctl_table.
848dnl #
849AC_DEFUN([SPL_AC_CTL_NAME], [
850 AC_MSG_CHECKING([whether struct ctl_table has ctl_name])
851 SPL_LINUX_TRY_COMPILE([
852 #include <linux/sysctl.h>
853 ],[
03318641 854 struct ctl_table ctl __attribute__ ((unused));
79a3bf13
BB		 855 ctl.ctl_name = 0;
856 ],[
857 AC_MSG_RESULT(yes)
858 AC_DEFINE(HAVE_CTL_NAME, 1, [struct ctl_table has ctl_name])
859 ],[
860 AC_MSG_RESULT(no)
861 ])
862])
863
1ddf9722
YS		 864dnl #
865dnl # 3.10 API change,
866dnl # PDE is replaced by PDE_DATA
867dnl #
868AC_DEFUN([SPL_AC_PDE_DATA], [
869 AC_MSG_CHECKING([whether PDE_DATA() is available])
870 SPL_LINUX_TRY_COMPILE_SYMBOL([
871 #include <linux/proc_fs.h>
872 ], [
873 PDE_DATA(NULL);
874 ], [PDE_DATA], [], [
875 AC_MSG_RESULT(yes)
876 AC_DEFINE(HAVE_PDE_DATA, 1, [yes])
877 ],[
878 AC_MSG_RESULT(no)
879 ])
880])
881
a54718cf
RY		 882dnl #
883dnl # 3.9 API change
884dnl # set_fs_pwd takes const struct path *
885dnl #
886AC_DEFUN([SPL_AC_SET_FS_PWD_WITH_CONST],
a54718cf
RY		 887 tmp_flags="$EXTRA_KCFLAGS"
888 EXTRA_KCFLAGS="-Werror"
889 [AC_MSG_CHECKING([whether set_fs_pwd() requires const struct path *])
890 SPL_LINUX_TRY_COMPILE([
891 #include <linux/spinlock.h>
892 #include <linux/fs_struct.h>
893 #include <linux/path.h>
894 void (*const set_fs_pwd_func)
895 (struct fs_struct *, const struct path *)
896 = set_fs_pwd;
897 ],[
898 return 0;
899 ],[
900 AC_MSG_RESULT(yes)
901 AC_DEFINE(HAVE_SET_FS_PWD_WITH_CONST, 1,
902 [set_fs_pwd() needs const path *])
903 ],[
904 SPL_LINUX_TRY_COMPILE([
905 #include <linux/spinlock.h>
906 #include <linux/fs_struct.h>
907 #include <linux/path.h>
908 void (*const set_fs_pwd_func)
909 (struct fs_struct *, struct path *)
910 = set_fs_pwd;
911 ],[
912 return 0;
913 ],[
914 AC_MSG_RESULT(no)
915 ],[
916 AC_MSG_ERROR(unknown)
917 ])
918 ])
919 EXTRA_KCFLAGS="$tmp_flags"
a54718cf
RY		 920])
921
e39174ed
BB		 922dnl #
923dnl # 3.13 API change
924dnl # vfs_unlink() updated to take a third delegated_inode argument.
925dnl #
a093c6a4
BB		 926AC_DEFUN([SPL_AC_2ARGS_VFS_UNLINK],
927 [AC_MSG_CHECKING([whether vfs_unlink() wants 2 args])
928 SPL_LINUX_TRY_COMPILE([
929 #include <linux/fs.h>
930 ],[
50a0749e 931 vfs_unlink((struct inode *) NULL, (struct dentry *) NULL);
a093c6a4
BB		 932 ],[
933 AC_MSG_RESULT(yes)
934 AC_DEFINE(HAVE_2ARGS_VFS_UNLINK, 1,
935 [vfs_unlink() wants 2 args])
936 ],[
937 AC_MSG_RESULT(no)
50a0749e
RY		 938 dnl #
939 dnl # Linux 3.13 API change
940 dnl # Added delegated inode
941 dnl #
942 AC_MSG_CHECKING([whether vfs_unlink() wants 3 args])
943 SPL_LINUX_TRY_COMPILE([
944 #include <linux/fs.h>
945 ],[
946 vfs_unlink((struct inode *) NULL,
947 (struct dentry *) NULL,
948 (struct inode **) NULL);
949 ],[
950 AC_MSG_RESULT(yes)
951 AC_DEFINE(HAVE_3ARGS_VFS_UNLINK, 1,
952 [vfs_unlink() wants 3 args])
953 ],[
954 AC_MSG_ERROR(no)
955 ])
956
a093c6a4
BB		 957 ])
958])
959
e39174ed
BB		 960dnl #
961dnl # 3.13 and 3.15 API changes
962dnl # Added delegated inode and flags argument.
963dnl #
a093c6a4
BB		 964AC_DEFUN([SPL_AC_4ARGS_VFS_RENAME],
965 [AC_MSG_CHECKING([whether vfs_rename() wants 4 args])
966 SPL_LINUX_TRY_COMPILE([
967 #include <linux/fs.h>
968 ],[
50a0749e
RY		 969 vfs_rename((struct inode *) NULL, (struct dentry *) NULL,
970 (struct inode *) NULL, (struct dentry *) NULL);
a093c6a4
BB		 971 ],[
972 AC_MSG_RESULT(yes)
973 AC_DEFINE(HAVE_4ARGS_VFS_RENAME, 1,
974 [vfs_rename() wants 4 args])
975 ],[
976 AC_MSG_RESULT(no)
50a0749e
RY		 977 dnl #
978 dnl # Linux 3.13 API change
979 dnl # Added delegated inode
980 dnl #
981 AC_MSG_CHECKING([whether vfs_rename() wants 5 args])
982 SPL_LINUX_TRY_COMPILE([
983 #include <linux/fs.h>
984 ],[
985 vfs_rename((struct inode *) NULL,
986 (struct dentry *) NULL,
987 (struct inode *) NULL,
988 (struct dentry *) NULL,
989 (struct inode **) NULL);
990 ],[
991 AC_MSG_RESULT(yes)
992 AC_DEFINE(HAVE_5ARGS_VFS_RENAME, 1,
993 [vfs_rename() wants 5 args])
994 ],[
ad3412ef
CC		 995 AC_MSG_RESULT(no)
996 dnl #
997 dnl # Linux 3.15 API change
998 dnl # Added flags
999 dnl #
1000 AC_MSG_CHECKING([whether vfs_rename() wants 6 args])
1001 SPL_LINUX_TRY_COMPILE([
1002 #include <linux/fs.h>
1003 ],[
1004 vfs_rename((struct inode *) NULL,
1005 (struct dentry *) NULL,
1006 (struct inode *) NULL,
1007 (struct dentry *) NULL,
1008 (struct inode **) NULL,
1009 (unsigned int) 0);
1010 ],[
1011 AC_MSG_RESULT(yes)
1012 AC_DEFINE(HAVE_6ARGS_VFS_RENAME, 1,
1013 [vfs_rename() wants 6 args])
1014 ],[
1015 AC_MSG_ERROR(no)
1016 ])
50a0749e 1017 ])
a093c6a4
BB		 1018 ])
1019])
ec7d53e9 1020
9b2048c2
BB		 1021dnl #
1022dnl # 2.6.36 API change,
1023dnl # The 'struct fs_struct->lock' was changed from a rwlock_t to
1024dnl # a spinlock_t to improve the fastpath performance.
1025dnl #
1026AC_DEFUN([SPL_AC_FS_STRUCT_SPINLOCK], [
1027 AC_MSG_CHECKING([whether struct fs_struct uses spinlock_t])
97fd6a07
BB		 1028 tmp_flags="$EXTRA_KCFLAGS"
1029 EXTRA_KCFLAGS="-Werror"
9b2048c2
BB		 1030 SPL_LINUX_TRY_COMPILE([
1031 #include <linux/sched.h>
1032 #include <linux/fs_struct.h>
1033 ],[
abb642b9 1034 static struct fs_struct fs;
9b2048c2
BB		 1035 spin_lock_init(&fs.lock);
1036 ],[
1037 AC_MSG_RESULT(yes)
1038 AC_DEFINE(HAVE_FS_STRUCT_SPINLOCK, 1,
1039 [struct fs_struct uses spinlock_t])
1040 ],[
1041 AC_MSG_RESULT(no)
1042 ])
97fd6a07 1043 EXTRA_KCFLAGS="$tmp_flags"
9b2048c2
BB		 1044])
1045
f7fd6ddd
RY		 1046dnl #
1047dnl # User namespaces, use kuid_t in place of uid_t
1048dnl # where available. Not strictly a user namespaces thing
1049dnl # but it should prevent surprises
1050dnl #
1051AC_DEFUN([SPL_AC_KUIDGID_T], [
1052 AC_MSG_CHECKING([whether kuid_t/kgid_t is available])
1053 SPL_LINUX_TRY_COMPILE([
1054 #include <linux/uidgid.h>
1055 ], [
1056 kuid_t userid = KUIDT_INIT(0);
1057 kgid_t groupid = KGIDT_INIT(0);
1058 ],[
1059 SPL_LINUX_TRY_COMPILE([
1060 #include <linux/uidgid.h>
1061 ], [
1062 kuid_t userid = 0;
1063 kgid_t groupid = 0;
1064 ],[
1065 AC_MSG_RESULT(yes; optional)
1066 ],[
1067 AC_MSG_RESULT(yes; mandatory)
1068 AC_DEFINE(HAVE_KUIDGID_T, 1, [kuid_t/kgid_t in use])
1069 ])
1070 ],[
1071 AC_MSG_RESULT(no)
1072 ])
1073])
1074
e811949a 1075dnl #
e03119e8
BB		 1076dnl # 2.6.39 API change,
1077dnl # __put_task_struct() was exported by the mainline kernel.
e811949a 1078dnl #
723aa3b0
ED		 1079AC_DEFUN([SPL_AC_PUT_TASK_STRUCT],
1080 [AC_MSG_CHECKING([whether __put_task_struct() is available])
1081 SPL_LINUX_TRY_COMPILE_SYMBOL([
1082 #include <linux/sched.h>
1083 ], [
1084 __put_task_struct(NULL);
1085 ], [__put_task_struct], [], [
1086 AC_MSG_RESULT(yes)
1087 AC_DEFINE(HAVE_PUT_TASK_STRUCT, 1,
1088 [__put_task_struct() is available])
1089 ], [
1090 AC_MSG_RESULT(no)
1091 ])
e811949a 1092])
3977f837 1093
f0ff89fc
BB		 1094dnl #
1095dnl # 2.6.35 API change,
0d0b5237 1096dnl # Unused 'struct dentry *' removed from vfs_fsync() prototype.
f0ff89fc 1097dnl #
0d0b5237
BB		 1098AC_DEFUN([SPL_AC_2ARGS_VFS_FSYNC], [
1099 AC_MSG_CHECKING([whether vfs_fsync() wants 2 args])
f0ff89fc 1100 SPL_LINUX_TRY_COMPILE([
0d0b5237 1101 #include <linux/fs.h>
f0ff89fc 1102 ],[
0d0b5237 1103 vfs_fsync(NULL, 0);
f0ff89fc
BB		 1104 ],[
1105 AC_MSG_RESULT(yes)
0d0b5237 1106 AC_DEFINE(HAVE_2ARGS_VFS_FSYNC, 1, [vfs_fsync() wants 2 args])
f0ff89fc
BB		 1107 ],[
1108 AC_MSG_RESULT(no)
1109 ])
1110])
46aa7b39 1111
bbdc6ae4
ED		 1112dnl #
1113dnl # 3.5 API change,
1114dnl # inode_operations.truncate_range removed
bbdc6ae4
ED		 1115dnl #
1116AC_DEFUN([SPL_AC_INODE_TRUNCATE_RANGE], [
1117 AC_MSG_CHECKING([whether truncate_range() inode operation is available])
1118 SPL_LINUX_TRY_COMPILE([
1119 #include <linux/fs.h>
1120 ],[
1121 struct inode_operations ops;
1122 ops.truncate_range = NULL;
1123 ],[
1124 AC_MSG_RESULT(yes)
1125 AC_DEFINE(HAVE_INODE_TRUNCATE_RANGE, 1,
1126 [truncate_range() inode operation is available])
1127 ],[
1128 AC_MSG_RESULT(no)
1129 ])
1c7b3eaf
BB		 1130])
1131
1132dnl #
1133dnl # Linux 2.6.38 - 3.x API
1134dnl #
1135AC_DEFUN([SPL_AC_KERNEL_FILE_FALLOCATE], [
1136 AC_MSG_CHECKING([whether fops->fallocate() exists])
1137 SPL_LINUX_TRY_COMPILE([
1138 #include <linux/fs.h>
1139 ],[
1140 long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL;
1141 struct file_operations fops __attribute__ ((unused)) = {
1142 .fallocate = fallocate,
1143 };
1144 ],[
1145 AC_MSG_RESULT(yes)
1146 AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists])
1147 ],[
1148 AC_MSG_RESULT(no)
1149 ])
1150])
1151
1152dnl #
1153dnl # Linux 2.6.x - 2.6.37 API
1154dnl #
1155AC_DEFUN([SPL_AC_KERNEL_INODE_FALLOCATE], [
1156 AC_MSG_CHECKING([whether iops->fallocate() exists])
1157 SPL_LINUX_TRY_COMPILE([
1158 #include <linux/fs.h>
1159 ],[
1160 long (*fallocate) (struct inode *, int, loff_t, loff_t) = NULL;
1161 struct inode_operations fops __attribute__ ((unused)) = {
1162 .fallocate = fallocate,
1163 };
1164 ],[
1165 AC_MSG_RESULT(yes)
1166 AC_DEFINE(HAVE_INODE_FALLOCATE, 1, [fops->fallocate() exists])
1167 ],[
1168 AC_MSG_RESULT(no)
1169 ])
1170])
1171
1172dnl #
1173dnl # PaX Linux 2.6.38 - 3.x API
1174dnl #
1175AC_DEFUN([SPL_AC_PAX_KERNEL_FILE_FALLOCATE], [
1176 AC_MSG_CHECKING([whether fops->fallocate() exists])
1177 SPL_LINUX_TRY_COMPILE([
1178 #include <linux/fs.h>
1179 ],[
1180 long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL;
1181 struct file_operations_no_const fops __attribute__ ((unused)) = {
1182 .fallocate = fallocate,
1183 };
1184 ],[
1185 AC_MSG_RESULT(yes)
1186 AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists])
1187 ],[
1188 AC_MSG_RESULT(no)
1189 ])
1190])
1191
1192dnl #
1193dnl # The fallocate callback was moved from the inode_operations
1194dnl # structure to the file_operations structure.
1195dnl #
1196AC_DEFUN([SPL_AC_KERNEL_FALLOCATE], [
1197 SPL_AC_KERNEL_FILE_FALLOCATE
1198 SPL_AC_KERNEL_INODE_FALLOCATE
1199 SPL_AC_PAX_KERNEL_FILE_FALLOCATE
1200])
bbdc6ae4 1201
42b3ce62
BB		 1202dnl #
1203dnl # zlib inflate compat,
1204dnl # Verify the kernel has CONFIG_ZLIB_INFLATE support enabled.
1205dnl #
1206AC_DEFUN([SPL_AC_CONFIG_ZLIB_INFLATE], [
1207 AC_MSG_CHECKING([whether CONFIG_ZLIB_INFLATE is defined])
1208 SPL_LINUX_TRY_COMPILE([
1209 #if !defined(CONFIG_ZLIB_INFLATE) && \
1210 !defined(CONFIG_ZLIB_INFLATE_MODULE)
1211 #error CONFIG_ZLIB_INFLATE not defined
1212 #endif
1213 ],[ ],[
1214 AC_MSG_RESULT([yes])
1215 ],[
1216 AC_MSG_RESULT([no])
1217 AC_MSG_ERROR([
1218 *** This kernel does not include the required zlib inflate support.
1219 *** Rebuild the kernel with CONFIG_ZLIB_INFLATE=y|m set.])
1220 ])
1221])
1222
1223dnl #
1224dnl # zlib deflate compat,
1225dnl # Verify the kernel has CONFIG_ZLIB_DEFLATE support enabled.
1226dnl #
1227AC_DEFUN([SPL_AC_CONFIG_ZLIB_DEFLATE], [
1228 AC_MSG_CHECKING([whether CONFIG_ZLIB_DEFLATE is defined])
1229 SPL_LINUX_TRY_COMPILE([
1230 #if !defined(CONFIG_ZLIB_DEFLATE) && \
1231 !defined(CONFIG_ZLIB_DEFLATE_MODULE)
1232 #error CONFIG_ZLIB_DEFLATE not defined
1233 #endif
1234 ],[ ],[
1235 AC_MSG_RESULT([yes])
1236 ],[
1237 AC_MSG_RESULT([no])
1238 AC_MSG_ERROR([
1239 *** This kernel does not include the required zlib deflate support.
1240 *** Rebuild the kernel with CONFIG_ZLIB_DEFLATE=y|m set.])
1241 ])
1242])
1243
3dfc591a
BB		 1244dnl #
1245dnl # 2.6.39 API compat,
1246dnl # The function zlib_deflate_workspacesize() now take 2 arguments.
1247dnl # This was done to avoid always having to allocate the maximum size
1248dnl # workspace (268K). The caller can now specific the windowBits and
1249dnl # memLevel compression parameters to get a smaller workspace.
1250dnl #
1251AC_DEFUN([SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE],
1252 [AC_MSG_CHECKING([whether zlib_deflate_workspacesize() wants 2 args])
1253 SPL_LINUX_TRY_COMPILE([
1254 #include <linux/zlib.h>
1255 ],[
1256 return zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL);
1257 ],[
1258 AC_MSG_RESULT(yes)
1259 AC_DEFINE(HAVE_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE, 1,
1260 [zlib_deflate_workspacesize() wants 2 args])
1261 ],[
1262 AC_MSG_RESULT(no)
1263 ])
1264])
a55bcaad
BB		 1265
1266dnl #
1267dnl # 2.6.39 API change,
1268dnl # Shrinker adjust to use common shrink_control structure.
1269dnl #
1270AC_DEFUN([SPL_AC_SHRINK_CONTROL_STRUCT], [
1271 AC_MSG_CHECKING([whether struct shrink_control exists])
1272 SPL_LINUX_TRY_COMPILE([
1273 #include <linux/mm.h>
1274 ],[
1275 struct shrink_control sc __attribute__ ((unused));
1276
1277 sc.nr_to_scan = 0;
1278 sc.gfp_mask = GFP_KERNEL;
1279 ],[
1280 AC_MSG_RESULT(yes)
1281 AC_DEFINE(HAVE_SHRINK_CONTROL_STRUCT, 1,
1282 [struct shrink_control exists])
1283 ],[
1284 AC_MSG_RESULT(no)
1285 ])
1286])
588d9004
DH		 1287
1288dnl #
1289dnl # 3.1 API Change
1290dnl #
1291dnl # The rw_semaphore.wait_lock member was changed from spinlock_t to
1292dnl # raw_spinlock_t at commit ddb6c9b58a19edcfac93ac670b066c836ff729f1.
1293dnl #
1294AC_DEFUN([SPL_AC_RWSEM_SPINLOCK_IS_RAW], [
1295 AC_MSG_CHECKING([whether struct rw_semaphore member wait_lock is raw])
1296 tmp_flags="$EXTRA_KCFLAGS"
1297 EXTRA_KCFLAGS="-Werror"
1298 SPL_LINUX_TRY_COMPILE([
1299 #include <linux/rwsem.h>
1300 ],[
1301 struct rw_semaphore dummy_semaphore __attribute__ ((unused));
1302 raw_spinlock_t dummy_lock __attribute__ ((unused));
1303 dummy_semaphore.wait_lock = dummy_lock;
1304 ],[
1305 AC_MSG_RESULT(yes)
1306 AC_DEFINE(RWSEM_SPINLOCK_IS_RAW, 1,
1307 [struct rw_semaphore member wait_lock is raw_spinlock_t])
1308 ],[
1309 AC_MSG_RESULT(no)
1310 ])
1311 EXTRA_KCFLAGS="$tmp_flags"
1312])
10087fe1
RY		 1313
1314dnl #
1315dnl # 3.9 API change,
1316dnl # Moved things from linux/sched.h to linux/sched/rt.h
1317dnl #
1318AC_DEFUN([SPL_AC_SCHED_RT_HEADER],
1319 [AC_MSG_CHECKING([whether header linux/sched/rt.h exists])
1320 SPL_LINUX_TRY_COMPILE([
1321 #include <linux/sched.h>
1322 #include <linux/sched/rt.h>
1323 ],[
1324 return 0;
1325 ],[
1326 AC_DEFINE(HAVE_SCHED_RT_HEADER, 1, [linux/sched/rt.h exists])
1327 AC_MSG_RESULT(yes)
1328 ],[
1329 AC_MSG_RESULT(no)
1330 ])
1331])
2a305c34
RY		 1332
1333dnl #
1334dnl # 3.9 API change,
1335dnl # vfs_getattr() uses 2 args
1336dnl # It takes struct path * instead of struct vfsmount * and struct dentry *
1337dnl #
1338AC_DEFUN([SPL_AC_2ARGS_VFS_GETATTR], [
1339 AC_MSG_CHECKING([whether vfs_getattr() wants])
1340 SPL_LINUX_TRY_COMPILE([
1341 #include <linux/fs.h>
1342 ],[
1343 vfs_getattr((struct path *) NULL,
1344 (struct kstat *)NULL);
1345 ],[
1346 AC_MSG_RESULT(2 args)
1347 AC_DEFINE(HAVE_2ARGS_VFS_GETATTR, 1,
1348 [vfs_getattr wants 2 args])
1349 ],[
1350 SPL_LINUX_TRY_COMPILE([
1351 #include <linux/fs.h>
1352 ],[
1353 vfs_getattr((struct vfsmount *)NULL,
1354 (struct dentry *)NULL,
1355 (struct kstat *)NULL);
1356 ],[
1357 AC_MSG_RESULT(3 args)
1358 ],[
1359 AC_MSG_ERROR(unknown)
1360 ])
1361 ])
1362])
184c6873
NB		 1363
1364dnl #
1365dnl # 2.6.36 API compatibility.
1366dnl # Added usleep_range timer.
1367dnl # usleep_range is a finer precision implementation of msleep
1368dnl # designed to be a drop-in replacement for udelay where a precise
1369dnl # sleep / busy-wait is unnecessary.
1370dnl #
1371AC_DEFUN([SPL_AC_USLEEP_RANGE], [
1372 AC_MSG_CHECKING([whether usleep_range() is available])
1373 SPL_LINUX_TRY_COMPILE([
1374 #include <linux/delay.h>
1375 ],[
1376 usleep_range(0, 0);
1377 ],[
1378 AC_MSG_RESULT(yes)
1379 AC_DEFINE(HAVE_USLEEP_RANGE, 1,
1380 [usleep_range is available])
1381 ],[
1382 AC_MSG_RESULT(no)
1383 ])
1384])
a073aeb0
BB		 1385
1386dnl #
1387dnl # 2.6.35 API change,
1388dnl # The cachep->gfpflags member was renamed cachep->allocflags. These are
1389dnl # private allocation flags which are applied when allocating a new slab
1390dnl # in kmem_getpages(). Unfortunately there is no public API for setting
1391dnl # non-default flags.
1392dnl #
1393AC_DEFUN([SPL_AC_KMEM_CACHE_ALLOCFLAGS], [
1394 AC_MSG_CHECKING([whether struct kmem_cache has allocflags])
1395 SPL_LINUX_TRY_COMPILE([
1396 #include <linux/slab.h>
1397 ],[
1398 struct kmem_cache cachep __attribute__ ((unused));
1399 cachep.allocflags = GFP_KERNEL;
1400 ],[
1401 AC_MSG_RESULT(yes)
1402 AC_DEFINE(HAVE_KMEM_CACHE_ALLOCFLAGS, 1,
1403 [struct kmem_cache has allocflags])
1404 ],[
1405 AC_MSG_RESULT(no)
1406
1407 AC_MSG_CHECKING([whether struct kmem_cache has gfpflags])
1408 SPL_LINUX_TRY_COMPILE([
1409 #include <linux/slab.h>
1410 ],[
1411 struct kmem_cache cachep __attribute__ ((unused));
1412 cachep.gfpflags = GFP_KERNEL;
1413 ],[
1414 AC_MSG_RESULT(yes)
1415 AC_DEFINE(HAVE_KMEM_CACHE_GFPFLAGS, 1,
1416 [struct kmem_cache has gfpflags])
1417 ],[
1418 AC_MSG_RESULT(no)
1419 ])
1420 ])
1421])
2fc44f66
NB		 1422
1423dnl #
1424dnl # 3.17 API change,
1425dnl # wait_on_bit() no longer requires an action argument. The former
1426dnl # "wait_on_bit" interface required an 'action' function to be provided
1427dnl # which does the actual waiting. There were over 20 such functions in the
1428dnl # kernel, many of them identical, though most cases can be satisfied by one
1429dnl # of just two functions: one which uses io_schedule() and one which just
1430dnl # uses schedule(). This API change was made to consolidate all of those
1431dnl # redundant wait functions.
1432dnl #
1433AC_DEFUN([SPL_AC_WAIT_ON_BIT], [
1434 AC_MSG_CHECKING([whether wait_on_bit() takes an action])
1435 SPL_LINUX_TRY_COMPILE([
1436 #include <linux/wait.h>
1437 ],[
1438 int (*action)(void *) = NULL;
1439 wait_on_bit(NULL, 0, action, 0);
1440 ],[
1441 AC_MSG_RESULT(yes)
1442 AC_DEFINE(HAVE_WAIT_ON_BIT_ACTION, 1, [yes])
1443 ],[
1444 AC_MSG_RESULT(no)
1445 ])
1446])
mirror of SPL module used by << 0.8.x ZFSOnLinux