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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 |
9 | AC_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="$KERNELCPPFLAGS -Wstrict-prototypes" | |
86933a6e BB |
18 | AC_SUBST(KERNELCPPFLAGS) |
19 | ||
20 | SPL_AC_DEBUG | |
21 | SPL_AC_DEBUG_KMEM | |
055ffd98 | 22 | SPL_AC_DEBUG_KMEM_TRACKING |
0408008b | 23 | SPL_AC_TEST_MODULE |
5e9b5d83 | 24 | SPL_AC_ATOMIC_SPINLOCK |
c3d9c0df | 25 | SPL_AC_SHRINKER_CALLBACK |
79a3bf13 | 26 | SPL_AC_CTL_NAME |
4b9dddf4 | 27 | SPL_AC_CONFIG_TRIM_UNUSED_KSYMS |
1ddf9722 | 28 | SPL_AC_PDE_DATA |
a54718cf | 29 | SPL_AC_SET_FS_PWD_WITH_CONST |
0d0b5237 | 30 | SPL_AC_2ARGS_VFS_FSYNC |
bbdc6ae4 | 31 | SPL_AC_INODE_TRUNCATE_RANGE |
9b2048c2 | 32 | SPL_AC_FS_STRUCT_SPINLOCK |
f7fd6ddd | 33 | SPL_AC_KUIDGID_T |
1c7b3eaf | 34 | SPL_AC_KERNEL_FALLOCATE |
42b3ce62 BB |
35 | SPL_AC_CONFIG_ZLIB_INFLATE |
36 | SPL_AC_CONFIG_ZLIB_DEFLATE | |
3dfc591a | 37 | SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE |
a55bcaad | 38 | SPL_AC_SHRINK_CONTROL_STRUCT |
588d9004 | 39 | SPL_AC_RWSEM_SPINLOCK_IS_RAW |
f58040c0 | 40 | SPL_AC_RWSEM_ACTIVITY |
b7c7008b | 41 | SPL_AC_RWSEM_ATOMIC_LONG_COUNT |
10087fe1 | 42 | SPL_AC_SCHED_RT_HEADER |
9a054d54 | 43 | SPL_AC_SCHED_SIGNAL_HEADER |
94b1ab2a OF |
44 | SPL_AC_4ARGS_VFS_GETATTR |
45 | SPL_AC_3ARGS_VFS_GETATTR | |
2a305c34 | 46 | SPL_AC_2ARGS_VFS_GETATTR |
184c6873 | 47 | SPL_AC_USLEEP_RANGE |
a073aeb0 | 48 | SPL_AC_KMEM_CACHE_ALLOCFLAGS |
2fc44f66 | 49 | SPL_AC_WAIT_ON_BIT |
fdbc1ba9 | 50 | SPL_AC_INODE_LOCK |
ae7eda1d | 51 | SPL_AC_GROUP_INFO_GID |
0194e4a0 | 52 | SPL_AC_KMEM_CACHE_CREATE_USERCOPY |
94411751 BB |
53 | SPL_AC_WAIT_QUEUE_ENTRY_T |
54 | SPL_AC_WAIT_QUEUE_HEAD_ENTRY | |
23602fdb | 55 | SPL_AC_IO_SCHEDULE_TIMEOUT |
ed19bccf BB |
56 | SPL_AC_KERNEL_WRITE |
57 | SPL_AC_KERNEL_READ | |
c9821f1c | 58 | SPL_AC_KERNEL_TIMER_FUNCTION_TIMER_LIST |
86933a6e BB |
59 | ]) |
60 | ||
61 | AC_DEFUN([SPL_AC_MODULE_SYMVERS], [ | |
bb339d06 | 62 | modpost=$LINUX/scripts/Makefile.modpost |
86933a6e | 63 | AC_MSG_CHECKING([kernel file name for module symbols]) |
0408008b | 64 | if test "x$enable_linux_builtin" != xyes -a -f "$modpost"; then |
bb339d06 BB |
65 | if grep -q Modules.symvers $modpost; then |
66 | LINUX_SYMBOLS=Modules.symvers | |
67 | else | |
68 | LINUX_SYMBOLS=Module.symvers | |
69 | fi | |
912fd84d BB |
70 | |
71 | if ! test -f "$LINUX_OBJ/$LINUX_SYMBOLS"; then | |
72 | AC_MSG_ERROR([ | |
73 | *** Please make sure the kernel devel package for your distribution | |
7a8a6393 | 74 | *** is installed. If you are building with a custom kernel, make sure the |
912fd84d BB |
75 | *** kernel is configured, built, and the '--with-linux=PATH' configure |
76 | *** option refers to the location of the kernel source.]) | |
77 | fi | |
86933a6e | 78 | else |
bb339d06 | 79 | LINUX_SYMBOLS=NONE |
86933a6e BB |
80 | fi |
81 | AC_MSG_RESULT($LINUX_SYMBOLS) | |
82 | AC_SUBST(LINUX_SYMBOLS) | |
83 | ]) | |
84 | ||
57d86234 | 85 | AC_DEFUN([SPL_AC_KERNEL], [ |
57d86234 | 86 | AC_ARG_WITH([linux], |
87 | AS_HELP_STRING([--with-linux=PATH], | |
88 | [Path to kernel source]), | |
39a3d2a4 | 89 | [kernelsrc="$withval"]) |
57d86234 | 90 | |
91 | AC_ARG_WITH([linux-obj], | |
92 | AS_HELP_STRING([--with-linux-obj=PATH], | |
93 | [Path to kernel build objects]), | |
94 | [kernelbuild="$withval"]) | |
95 | ||
96 | AC_MSG_CHECKING([kernel source directory]) | |
97 | if test -z "$kernelsrc"; then | |
22ccfaa8 BB |
98 | if test -e "/lib/modules/$(uname -r)/source"; then |
99 | headersdir="/lib/modules/$(uname -r)/source" | |
100 | sourcelink=$(readlink -f "$headersdir") | |
101 | elif test -e "/lib/modules/$(uname -r)/build"; then | |
102 | headersdir="/lib/modules/$(uname -r)/build" | |
534c4e38 BM |
103 | sourcelink=$(readlink -f "$headersdir") |
104 | else | |
105 | sourcelink=$(ls -1d /usr/src/kernels/* \ | |
723aa3b0 | 106 | /usr/src/linux-* \ |
534c4e38 BM |
107 | 2>/dev/null | grep -v obj | tail -1) |
108 | fi | |
57d86234 | 109 | |
8fd4e3af | 110 | if test -n "$sourcelink" && test -e ${sourcelink}; then |
d4326403 | 111 | kernelsrc=`readlink -f ${sourcelink}` |
d4326403 | 112 | else |
251677e9 | 113 | kernelsrc="[Not found]" |
57d86234 | 114 | fi |
c5f70460 BB |
115 | else |
116 | if test "$kernelsrc" = "NONE"; then | |
117 | kernsrcver=NONE | |
118 | fi | |
ac48361c | 119 | withlinux=yes |
57d86234 | 120 | fi |
121 | ||
122 | AC_MSG_RESULT([$kernelsrc]) | |
251677e9 BB |
123 | if test ! -d "$kernelsrc"; then |
124 | AC_MSG_ERROR([ | |
125 | *** Please make sure the kernel devel package for your distribution | |
7a8a6393 | 126 | *** is installed and then try again. If that fails, you can specify the |
251677e9 BB |
127 | *** location of the kernel source with the '--with-linux=PATH' option.]) |
128 | fi | |
129 | ||
57d86234 | 130 | AC_MSG_CHECKING([kernel build directory]) |
39a3d2a4 | 131 | if test -z "$kernelbuild"; then |
ac48361c | 132 | if test x$withlinux != xyes -a -e "/lib/modules/$(uname -r)/build"; then |
22ccfaa8 BB |
133 | kernelbuild=`readlink -f /lib/modules/$(uname -r)/build` |
134 | elif test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}; then | |
e2d28a37 BB |
135 | kernelbuild=${kernelsrc}-obj/${target_cpu}/${target_cpu} |
136 | elif test -d ${kernelsrc}-obj/${target_cpu}/default; then | |
137 | kernelbuild=${kernelsrc}-obj/${target_cpu}/default | |
138 | elif test -d `dirname ${kernelsrc}`/build-${target_cpu}; then | |
139 | kernelbuild=`dirname ${kernelsrc}`/build-${target_cpu} | |
39a3d2a4 BB |
140 | else |
141 | kernelbuild=${kernelsrc} | |
142 | fi | |
bf338d8d | 143 | fi |
57d86234 | 144 | AC_MSG_RESULT([$kernelbuild]) |
145 | ||
146 | AC_MSG_CHECKING([kernel source version]) | |
fd921c2e BB |
147 | utsrelease1=$kernelbuild/include/linux/version.h |
148 | utsrelease2=$kernelbuild/include/linux/utsrelease.h | |
149 | utsrelease3=$kernelbuild/include/generated/utsrelease.h | |
150 | if test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1; then | |
151 | utsrelease=linux/version.h | |
152 | elif test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2; then | |
153 | utsrelease=linux/utsrelease.h | |
154 | elif test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3; then | |
155 | utsrelease=generated/utsrelease.h | |
156 | fi | |
57d86234 | 157 | |
fd921c2e BB |
158 | if test "$utsrelease"; then |
159 | kernsrcver=`(echo "#include <$utsrelease>"; | |
57d86234 | 160 | echo "kernsrcver=UTS_RELEASE") | |
d4326403 | 161 | cpp -I $kernelbuild/include | |
57d86234 | 162 | grep "^kernsrcver=" | cut -d \" -f 2` |
57d86234 | 163 | |
fd921c2e BB |
164 | if test -z "$kernsrcver"; then |
165 | AC_MSG_RESULT([Not found]) | |
166 | AC_MSG_ERROR([*** Cannot determine kernel version.]) | |
167 | fi | |
168 | else | |
57d86234 | 169 | AC_MSG_RESULT([Not found]) |
0408008b ED |
170 | if test "x$enable_linux_builtin" != xyes; then |
171 | AC_MSG_ERROR([*** Cannot find UTS_RELEASE definition.]) | |
172 | else | |
173 | AC_MSG_ERROR([ | |
174 | *** Cannot find UTS_RELEASE definition. | |
175 | *** Please run 'make prepare' inside the kernel source tree.]) | |
176 | fi | |
57d86234 | 177 | fi |
178 | ||
179 | AC_MSG_RESULT([$kernsrcver]) | |
180 | ||
57d86234 | 181 | LINUX=${kernelsrc} |
182 | LINUX_OBJ=${kernelbuild} | |
c5f70460 BB |
183 | LINUX_VERSION=${kernsrcver} |
184 | ||
57d86234 | 185 | AC_SUBST(LINUX) |
186 | AC_SUBST(LINUX_OBJ) | |
c5f70460 | 187 | AC_SUBST(LINUX_VERSION) |
57d86234 | 188 | |
86933a6e | 189 | SPL_AC_MODULE_SYMVERS |
2e0e7e69 BB |
190 | ]) |
191 | ||
287b2fb1 BB |
192 | dnl # |
193 | dnl # Default SPL user configuration | |
194 | dnl # | |
ad35b6a6 | 195 | AC_DEFUN([SPL_AC_CONFIG_USER], []) |
287b2fb1 BB |
196 | |
197 | dnl # | |
198 | dnl # Check for rpm+rpmbuild to build RPM packages. If these tools | |
7a8a6393 | 199 | dnl # are missing, it is non-fatal, but you will not be able to build |
287b2fb1 BB |
200 | dnl # RPM packages and will be warned if you try too. |
201 | dnl # | |
7a8a6393 | 202 | dnl # By default, the generic spec file will be used because it requires |
493972c8 BB |
203 | dnl # minimal dependencies. Distribution specific spec files can be |
204 | dnl # placed under the 'rpm/<distribution>' directory and enabled using | |
205 | dnl # the --with-spec=<distribution> configure option. | |
206 | dnl # | |
287b2fb1 BB |
207 | AC_DEFUN([SPL_AC_RPM], [ |
208 | RPM=rpm | |
209 | RPMBUILD=rpmbuild | |
210 | ||
211 | AC_MSG_CHECKING([whether $RPM is available]) | |
212 | AS_IF([tmp=$($RPM --version 2>/dev/null)], [ | |
213 | RPM_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }') | |
214 | HAVE_RPM=yes | |
215 | AC_MSG_RESULT([$HAVE_RPM ($RPM_VERSION)]) | |
216 | ],[ | |
217 | HAVE_RPM=no | |
218 | AC_MSG_RESULT([$HAVE_RPM]) | |
219 | ]) | |
220 | ||
221 | AC_MSG_CHECKING([whether $RPMBUILD is available]) | |
222 | AS_IF([tmp=$($RPMBUILD --version 2>/dev/null)], [ | |
223 | RPMBUILD_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }') | |
224 | HAVE_RPMBUILD=yes | |
225 | AC_MSG_RESULT([$HAVE_RPMBUILD ($RPMBUILD_VERSION)]) | |
226 | ],[ | |
227 | HAVE_RPMBUILD=no | |
228 | AC_MSG_RESULT([$HAVE_RPMBUILD]) | |
229 | ]) | |
230 | ||
8d9a23e8 | 231 | RPM_DEFINE_COMMON='--define "$(DEBUG_SPL) 1" --define "$(DEBUG_KMEM) 1" --define "$(DEBUG_KMEM_TRACKING) 1"' |
493972c8 BB |
232 | RPM_DEFINE_UTIL= |
233 | RPM_DEFINE_KMOD='--define "kernels $(LINUX_VERSION)"' | |
234 | RPM_DEFINE_DKMS= | |
235 | ||
236 | SRPM_DEFINE_COMMON='--define "build_src_rpm 1"' | |
237 | SRPM_DEFINE_UTIL= | |
238 | SRPM_DEFINE_KMOD= | |
239 | SRPM_DEFINE_DKMS= | |
240 | ||
241 | RPM_SPEC_DIR="rpm/generic" | |
242 | AC_ARG_WITH([spec], | |
243 | AS_HELP_STRING([--with-spec=SPEC], | |
fade6b00 | 244 | [Spec files 'generic|redhat']), |
493972c8 BB |
245 | [RPM_SPEC_DIR="rpm/$withval"]) |
246 | ||
247 | AC_MSG_CHECKING([whether spec files are available]) | |
248 | AC_MSG_RESULT([yes ($RPM_SPEC_DIR/*.spec.in)]) | |
249 | ||
287b2fb1 BB |
250 | AC_SUBST(HAVE_RPM) |
251 | AC_SUBST(RPM) | |
252 | AC_SUBST(RPM_VERSION) | |
253 | ||
254 | AC_SUBST(HAVE_RPMBUILD) | |
255 | AC_SUBST(RPMBUILD) | |
256 | AC_SUBST(RPMBUILD_VERSION) | |
493972c8 BB |
257 | |
258 | AC_SUBST(RPM_SPEC_DIR) | |
259 | AC_SUBST(RPM_DEFINE_UTIL) | |
260 | AC_SUBST(RPM_DEFINE_KMOD) | |
261 | AC_SUBST(RPM_DEFINE_DKMS) | |
262 | AC_SUBST(RPM_DEFINE_COMMON) | |
263 | AC_SUBST(SRPM_DEFINE_UTIL) | |
264 | AC_SUBST(SRPM_DEFINE_KMOD) | |
265 | AC_SUBST(SRPM_DEFINE_DKMS) | |
266 | AC_SUBST(SRPM_DEFINE_COMMON) | |
287b2fb1 BB |
267 | ]) |
268 | ||
269 | dnl # | |
270 | dnl # Check for dpkg+dpkg-buildpackage to build DEB packages. If these | |
271 | dnl # tools are missing it is non-fatal but you will not be able to build | |
272 | dnl # DEB packages and will be warned if you try too. | |
273 | dnl # | |
274 | AC_DEFUN([SPL_AC_DPKG], [ | |
275 | DPKG=dpkg | |
276 | DPKGBUILD=dpkg-buildpackage | |
277 | ||
278 | AC_MSG_CHECKING([whether $DPKG is available]) | |
279 | AS_IF([tmp=$($DPKG --version 2>/dev/null)], [ | |
280 | DPKG_VERSION=$(echo $tmp | $AWK '/Debian/ { print $[7] }') | |
281 | HAVE_DPKG=yes | |
282 | AC_MSG_RESULT([$HAVE_DPKG ($DPKG_VERSION)]) | |
283 | ],[ | |
284 | HAVE_DPKG=no | |
285 | AC_MSG_RESULT([$HAVE_DPKG]) | |
286 | ]) | |
287 | ||
288 | AC_MSG_CHECKING([whether $DPKGBUILD is available]) | |
289 | AS_IF([tmp=$($DPKGBUILD --version 2>/dev/null)], [ | |
290 | DPKGBUILD_VERSION=$(echo $tmp | \ | |
291 | $AWK '/Debian/ { print $[4] }' | cut -f-4 -d'.') | |
292 | HAVE_DPKGBUILD=yes | |
293 | AC_MSG_RESULT([$HAVE_DPKGBUILD ($DPKGBUILD_VERSION)]) | |
294 | ],[ | |
295 | HAVE_DPKGBUILD=no | |
296 | AC_MSG_RESULT([$HAVE_DPKGBUILD]) | |
297 | ]) | |
298 | ||
299 | AC_SUBST(HAVE_DPKG) | |
300 | AC_SUBST(DPKG) | |
301 | AC_SUBST(DPKG_VERSION) | |
302 | ||
303 | AC_SUBST(HAVE_DPKGBUILD) | |
304 | AC_SUBST(DPKGBUILD) | |
305 | AC_SUBST(DPKGBUILD_VERSION) | |
306 | ]) | |
307 | ||
308 | dnl # | |
309 | dnl # Until native packaging for various different packing systems | |
310 | dnl # can be added the least we can do is attempt to use alien to | |
311 | dnl # convert the RPM packages to the needed package type. This is | |
312 | dnl # a hack but so far it has worked reasonable well. | |
313 | dnl # | |
314 | AC_DEFUN([SPL_AC_ALIEN], [ | |
315 | ALIEN=alien | |
316 | ||
317 | AC_MSG_CHECKING([whether $ALIEN is available]) | |
318 | AS_IF([tmp=$($ALIEN --version 2>/dev/null)], [ | |
319 | ALIEN_VERSION=$(echo $tmp | $AWK '{ print $[3] }') | |
320 | HAVE_ALIEN=yes | |
321 | AC_MSG_RESULT([$HAVE_ALIEN ($ALIEN_VERSION)]) | |
322 | ],[ | |
323 | HAVE_ALIEN=no | |
324 | AC_MSG_RESULT([$HAVE_ALIEN]) | |
325 | ]) | |
326 | ||
327 | AC_SUBST(HAVE_ALIEN) | |
328 | AC_SUBST(ALIEN) | |
329 | AC_SUBST(ALIEN_VERSION) | |
330 | ]) | |
331 | ||
332 | dnl # | |
333 | dnl # Using the VENDOR tag from config.guess set the default | |
334 | dnl # package type for 'make pkg': (rpm | deb | tgz) | |
335 | dnl # | |
336 | AC_DEFUN([SPL_AC_DEFAULT_PACKAGE], [ | |
73fc084e | 337 | AC_MSG_CHECKING([linux distribution]) |
a3a69b74 BB |
338 | if test -f /etc/toss-release ; then |
339 | VENDOR=toss ; | |
73fc084e BB |
340 | elif test -f /etc/fedora-release ; then |
341 | VENDOR=fedora ; | |
a3a69b74 BB |
342 | elif test -f /etc/redhat-release ; then |
343 | VENDOR=redhat ; | |
344 | elif test -f /etc/gentoo-release ; then | |
345 | VENDOR=gentoo ; | |
cd2817f8 PS |
346 | elif test -f /etc/arch-release ; then |
347 | VENDOR=arch ; | |
73fc084e BB |
348 | elif test -f /etc/SuSE-release ; then |
349 | VENDOR=sles ; | |
350 | elif test -f /etc/slackware-version ; then | |
351 | VENDOR=slackware ; | |
a3a69b74 BB |
352 | elif test -f /etc/lunar.release ; then |
353 | VENDOR=lunar ; | |
354 | elif test -f /etc/lsb-release ; then | |
355 | VENDOR=ubuntu ; | |
356 | elif test -f /etc/debian_version ; then | |
357 | VENDOR=debian ; | |
73fc084e BB |
358 | else |
359 | VENDOR= ; | |
360 | fi | |
361 | AC_MSG_RESULT([$VENDOR]) | |
362 | AC_SUBST(VENDOR) | |
287b2fb1 BB |
363 | |
364 | AC_MSG_CHECKING([default package type]) | |
365 | case "$VENDOR" in | |
a3a69b74 BB |
366 | toss) DEFAULT_PACKAGE=rpm ;; |
367 | redhat) DEFAULT_PACKAGE=rpm ;; | |
368 | fedora) DEFAULT_PACKAGE=rpm ;; | |
369 | gentoo) DEFAULT_PACKAGE=tgz ;; | |
5f0a4b08 | 370 | arch) DEFAULT_PACKAGE=tgz ;; |
a3a69b74 BB |
371 | sles) DEFAULT_PACKAGE=rpm ;; |
372 | slackware) DEFAULT_PACKAGE=tgz ;; | |
373 | lunar) DEFAULT_PACKAGE=tgz ;; | |
374 | ubuntu) DEFAULT_PACKAGE=deb ;; | |
375 | debian) DEFAULT_PACKAGE=deb ;; | |
376 | *) DEFAULT_PACKAGE=rpm ;; | |
287b2fb1 BB |
377 | esac |
378 | ||
379 | AC_MSG_RESULT([$DEFAULT_PACKAGE]) | |
380 | AC_SUBST(DEFAULT_PACKAGE) | |
381 | ]) | |
382 | ||
383 | dnl # | |
384 | dnl # Default SPL user configuration | |
385 | dnl # | |
386 | AC_DEFUN([SPL_AC_PACKAGE], [ | |
0b14b9f3 | 387 | SPL_AC_DEFAULT_PACKAGE |
287b2fb1 BB |
388 | SPL_AC_RPM |
389 | SPL_AC_DPKG | |
390 | SPL_AC_ALIEN | |
287b2fb1 BB |
391 | ]) |
392 | ||
6a1c3d41 | 393 | AC_DEFUN([SPL_AC_LICENSE], [ |
62032954 BB |
394 | AC_MSG_CHECKING([spl author]) |
395 | AC_MSG_RESULT([$SPL_META_AUTHOR]) | |
396 | ||
86933a6e | 397 | AC_MSG_CHECKING([spl license]) |
62032954 | 398 | AC_MSG_RESULT([$SPL_META_LICENSE]) |
86933a6e BB |
399 | ]) |
400 | ||
401 | AC_DEFUN([SPL_AC_CONFIG], [ | |
0408008b ED |
402 | SPL_CONFIG=all |
403 | AC_ARG_WITH([config], | |
404 | AS_HELP_STRING([--with-config=CONFIG], | |
405 | [Config file 'kernel|user|all|srpm']), | |
406 | [SPL_CONFIG="$withval"]) | |
407 | AC_ARG_ENABLE([linux-builtin], | |
408 | [AC_HELP_STRING([--enable-linux-builtin], | |
409 | [Configure for builtin in-tree kernel modules @<:@default=no@:>@])], | |
410 | [], | |
411 | [enable_linux_builtin=no]) | |
412 | ||
413 | AC_MSG_CHECKING([spl config]) | |
414 | AC_MSG_RESULT([$SPL_CONFIG]); | |
415 | AC_SUBST(SPL_CONFIG) | |
416 | ||
417 | case "$SPL_CONFIG" in | |
418 | kernel) SPL_AC_CONFIG_KERNEL ;; | |
419 | user) SPL_AC_CONFIG_USER ;; | |
420 | all) SPL_AC_CONFIG_KERNEL | |
421 | SPL_AC_CONFIG_USER ;; | |
c1541dfe | 422 | srpm) ;; |
0408008b ED |
423 | *) |
424 | AC_MSG_RESULT([Error!]) | |
425 | AC_MSG_ERROR([Bad value "$SPL_CONFIG" for --with-config, | |
426 | user kernel|user|all|srpm]) ;; | |
427 | esac | |
428 | ||
429 | AM_CONDITIONAL([CONFIG_USER], | |
430 | [test "$SPL_CONFIG" = user -o "$SPL_CONFIG" = all]) | |
431 | AM_CONDITIONAL([CONFIG_KERNEL], | |
432 | [test "$SPL_CONFIG" = kernel -o "$SPL_CONFIG" = all] && | |
433 | [test "x$enable_linux_builtin" != xyes ]) | |
6a1c3d41 | 434 | ]) |
435 | ||
055ffd98 BB |
436 | dnl # |
437 | dnl # Enable if the SPL should be compiled with internal debugging enabled. | |
438 | dnl # By default this support is disabled. | |
439 | dnl # | |
57d86234 | 440 | AC_DEFUN([SPL_AC_DEBUG], [ |
c950d148 | 441 | AC_MSG_CHECKING([whether debugging is enabled]) |
055ffd98 BB |
442 | AC_ARG_ENABLE([debug], |
443 | [AS_HELP_STRING([--enable-debug], | |
444 | [Enable generic debug support @<:@default=no@:>@])], | |
445 | [], | |
446 | [enable_debug=no]) | |
447 | ||
448 | AS_IF([test "x$enable_debug" = xyes], | |
c950d148 | 449 | [ |
c950d148 BB |
450 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG -Werror" |
451 | DEBUG_CFLAGS="-DDEBUG -Werror" | |
3c208a54 BB |
452 | DEBUG_SPL="_with_debug" |
453 | ], [ | |
c950d148 BB |
454 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DNDEBUG" |
455 | DEBUG_CFLAGS="-DNDEBUG" | |
3c208a54 | 456 | DEBUG_SPL="_without_debug" |
c950d148 | 457 | ]) |
055ffd98 | 458 | |
c950d148 | 459 | AC_SUBST(DEBUG_CFLAGS) |
3c208a54 | 460 | AC_SUBST(DEBUG_SPL) |
055ffd98 | 461 | AC_MSG_RESULT([$enable_debug]) |
57d86234 | 462 | ]) |
463 | ||
055ffd98 BB |
464 | dnl # |
465 | dnl # Enabled by default it provides a minimal level of memory tracking. | |
466 | dnl # A total count of bytes allocated is kept for each alloc and free. | |
467 | dnl # Then at module unload time a report to the console will be printed | |
9eb361aa | 468 | dnl # if memory was leaked. |
055ffd98 | 469 | dnl # |
57d86234 | 470 | AC_DEFUN([SPL_AC_DEBUG_KMEM], [ |
055ffd98 BB |
471 | AC_ARG_ENABLE([debug-kmem], |
472 | [AS_HELP_STRING([--enable-debug-kmem], | |
9eb361aa | 473 | [Enable basic kmem accounting @<:@default=no@:>@])], |
055ffd98 | 474 | [], |
9eb361aa | 475 | [enable_debug_kmem=no]) |
57d86234 | 476 | |
055ffd98 | 477 | AS_IF([test "x$enable_debug_kmem" = xyes], |
3c208a54 BB |
478 | [ |
479 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM" | |
480 | DEBUG_KMEM="_with_debug_kmem" | |
481 | AC_DEFINE([DEBUG_KMEM], [1], | |
055ffd98 | 482 | [Define to 1 to enable basic kmem accounting]) |
3c208a54 BB |
483 | ], [ |
484 | DEBUG_KMEM="_without_debug_kmem" | |
485 | ]) | |
055ffd98 | 486 | |
3c208a54 | 487 | AC_SUBST(DEBUG_KMEM) |
055ffd98 BB |
488 | AC_MSG_CHECKING([whether basic kmem accounting is enabled]) |
489 | AC_MSG_RESULT([$enable_debug_kmem]) | |
57d86234 | 490 | ]) |
491 | ||
055ffd98 BB |
492 | dnl # |
493 | dnl # Disabled by default it provides detailed memory tracking. This | |
494 | dnl # feature also requires --enable-debug-kmem to be set. When enabled | |
495 | dnl # not only will total bytes be tracked but also the location of every | |
496 | dnl # alloc and free. When the SPL module is unloaded a list of all leaked | |
497 | dnl # addresses and where they were allocated will be dumped to the console. | |
498 | dnl # Enabling this feature has a significant impact on performance but it | |
499 | dnl # makes finding memory leaks pretty straight forward. | |
500 | dnl # | |
501 | AC_DEFUN([SPL_AC_DEBUG_KMEM_TRACKING], [ | |
502 | AC_ARG_ENABLE([debug-kmem-tracking], | |
503 | [AS_HELP_STRING([--enable-debug-kmem-tracking], | |
504 | [Enable detailed kmem tracking @<:@default=no@:>@])], | |
505 | [], | |
506 | [enable_debug_kmem_tracking=no]) | |
507 | ||
508 | AS_IF([test "x$enable_debug_kmem_tracking" = xyes], | |
3c208a54 BB |
509 | [ |
510 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM_TRACKING" | |
511 | DEBUG_KMEM_TRACKING="_with_debug_kmem_tracking" | |
512 | AC_DEFINE([DEBUG_KMEM_TRACKING], [1], | |
055ffd98 | 513 | [Define to 1 to enable detailed kmem tracking]) |
3c208a54 BB |
514 | ], [ |
515 | DEBUG_KMEM_TRACKING="_without_debug_kmem_tracking" | |
516 | ]) | |
055ffd98 | 517 | |
3c208a54 | 518 | AC_SUBST(DEBUG_KMEM_TRACKING) |
055ffd98 BB |
519 | AC_MSG_CHECKING([whether detailed kmem tracking is enabled]) |
520 | AC_MSG_RESULT([$enable_debug_kmem_tracking]) | |
57d86234 | 521 | ]) |
522 | ||
523 | dnl # | |
524 | dnl # SPL_LINUX_CONFTEST | |
525 | dnl # | |
526 | AC_DEFUN([SPL_LINUX_CONFTEST], [ | |
dbe561d8 | 527 | cat confdefs.h - <<_ACEOF >conftest.c |
57d86234 | 528 | $1 |
529 | _ACEOF | |
530 | ]) | |
531 | ||
532 | dnl # | |
533 | dnl # SPL_LANG_PROGRAM(C)([PROLOGUE], [BODY]) | |
534 | dnl # | |
535 | m4_define([SPL_LANG_PROGRAM], [ | |
536 | $1 | |
537 | int | |
538 | main (void) | |
539 | { | |
540 | dnl Do *not* indent the following line: there may be CPP directives. | |
541 | dnl Don't move the `;' right after for the same reason. | |
542 | $2 | |
543 | ; | |
544 | return 0; | |
545 | } | |
546 | ]) | |
547 | ||
548 | dnl # | |
549 | dnl # SPL_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE | |
550 | dnl # | |
551 | AC_DEFUN([SPL_LINUX_COMPILE_IFELSE], [ | |
c5f70460 | 552 | m4_ifvaln([$1], [SPL_LINUX_CONFTEST([$1])]) |
df7cc5bc | 553 | rm -Rf build && mkdir -p build && touch build/conftest.mod.c |
c5f70460 | 554 | echo "obj-m := conftest.o" >build/Makefile |
df7cc5bc ED |
555 | modpost_flag='' |
556 | test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage | |
c5f70460 | 557 | AS_IF( |
df7cc5bc ED |
558 | [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])], |
559 | [$4], | |
560 | [_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])] | |
c5f70460 BB |
561 | ) |
562 | rm -Rf build | |
57d86234 | 563 | ]) |
564 | ||
565 | dnl # | |
566 | dnl # SPL_LINUX_TRY_COMPILE like AC_TRY_COMPILE | |
567 | dnl # | |
568 | AC_DEFUN([SPL_LINUX_TRY_COMPILE], | |
569 | [SPL_LINUX_COMPILE_IFELSE( | |
d50bd9e2 | 570 | [AC_LANG_SOURCE([SPL_LANG_PROGRAM([[$1]], [[$2]])])], |
571 | [modules], | |
572 | [test -s build/conftest.o], | |
573 | [$3], [$4]) | |
57d86234 | 574 | ]) |
575 | ||
57d86234 | 576 | dnl # |
577 | dnl # SPL_CHECK_SYMBOL_EXPORT | |
578 | dnl # check symbol exported or not | |
579 | dnl # | |
723aa3b0 | 580 | AC_DEFUN([SPL_CHECK_SYMBOL_EXPORT], [ |
2e0e7e69 BB |
581 | grep -q -E '[[[:space:]]]$1[[[:space:]]]' \ |
582 | $LINUX_OBJ/Module*.symvers 2>/dev/null | |
57d86234 | 583 | rc=$? |
584 | if test $rc -ne 0; then | |
585 | export=0 | |
586 | for file in $2; do | |
2e0e7e69 BB |
587 | grep -q -E "EXPORT_SYMBOL.*($1)" \ |
588 | "$LINUX_OBJ/$file" 2>/dev/null | |
57d86234 | 589 | rc=$? |
723aa3b0 ED |
590 | if test $rc -eq 0; then |
591 | export=1 | |
592 | break; | |
593 | fi | |
57d86234 | 594 | done |
723aa3b0 | 595 | if test $export -eq 0; then : |
57d86234 | 596 | $4 |
723aa3b0 | 597 | else : |
57d86234 | 598 | $3 |
599 | fi | |
723aa3b0 | 600 | else : |
57d86234 | 601 | $3 |
602 | fi | |
603 | ]) | |
604 | ||
723aa3b0 ED |
605 | dnl # |
606 | dnl # SPL_LINUX_TRY_COMPILE_SYMBOL | |
607 | dnl # like SPL_LINUX_TRY_COMPILE, except SPL_CHECK_SYMBOL_EXPORT | |
608 | dnl # is called if not compiling for builtin | |
609 | dnl # | |
610 | AC_DEFUN([SPL_LINUX_TRY_COMPILE_SYMBOL], [ | |
611 | SPL_LINUX_TRY_COMPILE([$1], [$2], [rc=0], [rc=1]) | |
612 | if test $rc -ne 0; then : | |
613 | $6 | |
614 | else | |
615 | if test "x$enable_linux_builtin" != xyes; then | |
616 | SPL_CHECK_SYMBOL_EXPORT([$3], [$4], [rc=0], [rc=1]) | |
617 | fi | |
618 | if test $rc -ne 0; then : | |
619 | $6 | |
620 | else : | |
621 | $5 | |
622 | fi | |
623 | fi | |
624 | ]) | |
625 | ||
12ff95ff BB |
626 | dnl # |
627 | dnl # SPL_CHECK_SYMBOL_HEADER | |
628 | dnl # check if a symbol prototype is defined in listed headers. | |
629 | dnl # | |
630 | AC_DEFUN([SPL_CHECK_SYMBOL_HEADER], [ | |
631 | AC_MSG_CHECKING([whether symbol $1 exists in header]) | |
632 | header=0 | |
633 | for file in $3; do | |
634 | grep -q "$2" "$LINUX/$file" 2>/dev/null | |
635 | rc=$? | |
723aa3b0 ED |
636 | if test $rc -eq 0; then |
637 | header=1 | |
638 | break; | |
639 | fi | |
12ff95ff BB |
640 | done |
641 | if test $header -eq 0; then | |
642 | AC_MSG_RESULT([no]) | |
643 | $5 | |
644 | else | |
645 | AC_MSG_RESULT([yes]) | |
646 | $4 | |
647 | fi | |
648 | ]) | |
649 | ||
86de8532 | 650 | dnl # |
651 | dnl # SPL_CHECK_HEADER | |
652 | dnl # check whether header exists and define HAVE_$2_HEADER | |
653 | dnl # | |
654 | AC_DEFUN([SPL_CHECK_HEADER], | |
655 | [AC_MSG_CHECKING([whether header $1 exists]) | |
656 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 657 | #include <$1> |
86de8532 | 658 | ],[ |
659 | return 0; | |
660 | ],[ | |
661 | AC_DEFINE(HAVE_$2_HEADER, 1, [$1 exists]) | |
662 | AC_MSG_RESULT(yes) | |
663 | $3 | |
664 | ],[ | |
665 | AC_MSG_RESULT(no) | |
666 | $4 | |
667 | ]) | |
668 | ]) | |
6a6cafbe | 669 | |
0408008b | 670 | dnl # |
62032954 BB |
671 | dnl # Basic toolchain sanity check. Verify that kernel modules can |
672 | dnl # be built and which symbols can be used. | |
0408008b ED |
673 | dnl # |
674 | AC_DEFUN([SPL_AC_TEST_MODULE], | |
675 | [AC_MSG_CHECKING([whether modules can be built]) | |
676 | SPL_LINUX_TRY_COMPILE([],[],[ | |
677 | AC_MSG_RESULT([yes]) | |
678 | ],[ | |
679 | AC_MSG_RESULT([no]) | |
680 | if test "x$enable_linux_builtin" != xyes; then | |
681 | AC_MSG_ERROR([*** Unable to build an empty module.]) | |
682 | else | |
683 | AC_MSG_ERROR([ | |
684 | *** Unable to build an empty module. | |
685 | *** Please run 'make scripts' inside the kernel source tree.]) | |
686 | fi | |
687 | ]) | |
62032954 | 688 | |
e0ed96fa KD |
689 | AS_IF([test "x$cross_compiling" != xyes], [ |
690 | AC_RUN_IFELSE([ | |
691 | AC_LANG_PROGRAM([ | |
692 | #include "$LINUX/include/linux/license.h" | |
693 | ], [ | |
694 | return !license_is_gpl_compatible( | |
695 | "$SPL_META_LICENSE"); | |
696 | ]) | |
697 | ], [ | |
698 | AC_DEFINE([SPL_IS_GPL_COMPATIBLE], [1], | |
699 | [Define to 1 if GPL-only symbols can be used]) | |
62032954 | 700 | ], [ |
62032954 | 701 | ]) |
62032954 | 702 | ]) |
0408008b ED |
703 | ]) |
704 | ||
57d86234 | 705 | dnl # |
d04c8a56 BB |
706 | dnl # Use the atomic implemenation based on global spinlocks. This |
707 | dnl # should only be needed by 32-bit kernels which do not provide | |
708 | dnl # the atomic64_* API. It may be optionally enabled as a fallback | |
709 | dnl # if problems are observed with the direct mapping to the native | |
710 | dnl # Linux atomic operations. You may not disable atomic spinlocks | |
711 | dnl # if you kernel does not an atomic64_* API. | |
57d86234 | 712 | dnl # |
d04c8a56 BB |
713 | AC_DEFUN([SPL_AC_ATOMIC_SPINLOCK], [ |
714 | AC_ARG_ENABLE([atomic-spinlocks], | |
715 | [AS_HELP_STRING([--enable-atomic-spinlocks], | |
716 | [Atomic types use spinlocks @<:@default=check@:>@])], | |
717 | [], | |
718 | [enable_atomic_spinlocks=check]) | |
57d86234 | 719 | |
a0f6da3d | 720 | SPL_LINUX_TRY_COMPILE([ |
dd3678fc | 721 | #include <linux/fs.h> |
a0f6da3d | 722 | ],[ |
03318641 | 723 | atomic64_t *ptr __attribute__ ((unused)); |
a0f6da3d | 724 | ],[ |
d04c8a56 | 725 | have_atomic64_t=yes |
a0f6da3d | 726 | AC_DEFINE(HAVE_ATOMIC64_T, 1, |
d04c8a56 | 727 | [kernel defines atomic64_t]) |
a0f6da3d | 728 | ],[ |
d04c8a56 BB |
729 | have_atomic64_t=no |
730 | ]) | |
731 | ||
732 | AS_IF([test "x$enable_atomic_spinlocks" = xcheck], [ | |
733 | AS_IF([test "x$have_atomic64_t" = xyes], [ | |
734 | enable_atomic_spinlocks=no | |
735 | ],[ | |
736 | enable_atomic_spinlocks=yes | |
737 | ]) | |
a0f6da3d | 738 | ]) |
d04c8a56 BB |
739 | |
740 | AS_IF([test "x$enable_atomic_spinlocks" = xyes], [ | |
741 | AC_DEFINE([ATOMIC_SPINLOCK], [1], | |
742 | [Atomic types use spinlocks]) | |
743 | ],[ | |
744 | AS_IF([test "x$have_atomic64_t" = xno], [ | |
745 | AC_MSG_FAILURE( | |
746 | [--disable-atomic-spinlocks given but required atomic64 support is unavailable]) | |
747 | ]) | |
748 | ]) | |
749 | ||
750 | AC_MSG_CHECKING([whether atomic types use spinlocks]) | |
751 | AC_MSG_RESULT([$enable_atomic_spinlocks]) | |
752 | ||
753 | AC_MSG_CHECKING([whether kernel defines atomic64_t]) | |
754 | AC_MSG_RESULT([$have_atomic64_t]) | |
a0f6da3d | 755 | ]) |
756 | ||
c3d9c0df | 757 | AC_DEFUN([SPL_AC_SHRINKER_CALLBACK],[ |
23aa63cb BB |
758 | tmp_flags="$EXTRA_KCFLAGS" |
759 | EXTRA_KCFLAGS="-Werror" | |
c3d9c0df RY |
760 | dnl # |
761 | dnl # 2.6.23 to 2.6.34 API change | |
762 | dnl # ->shrink(int nr_to_scan, gfp_t gfp_mask) | |
763 | dnl # | |
764 | AC_MSG_CHECKING([whether old 2-argument shrinker exists]) | |
23aa63cb BB |
765 | SPL_LINUX_TRY_COMPILE([ |
766 | #include <linux/mm.h> | |
767 | ||
c3d9c0df | 768 | int shrinker_cb(int nr_to_scan, gfp_t gfp_mask); |
23aa63cb BB |
769 | ],[ |
770 | struct shrinker cache_shrinker = { | |
771 | .shrink = shrinker_cb, | |
772 | .seeks = DEFAULT_SEEKS, | |
773 | }; | |
774 | register_shrinker(&cache_shrinker); | |
775 | ],[ | |
776 | AC_MSG_RESULT(yes) | |
c3d9c0df RY |
777 | AC_DEFINE(HAVE_2ARGS_OLD_SHRINKER_CALLBACK, 1, |
778 | [old shrinker callback wants 2 args]) | |
23aa63cb BB |
779 | ],[ |
780 | AC_MSG_RESULT(no) | |
c3d9c0df RY |
781 | dnl # |
782 | dnl # 2.6.35 - 2.6.39 API change | |
783 | dnl # ->shrink(struct shrinker *, | |
784 | dnl # int nr_to_scan, gfp_t gfp_mask) | |
785 | dnl # | |
786 | AC_MSG_CHECKING([whether old 3-argument shrinker exists]) | |
787 | SPL_LINUX_TRY_COMPILE([ | |
788 | #include <linux/mm.h> | |
789 | ||
790 | int shrinker_cb(struct shrinker *, int nr_to_scan, | |
791 | gfp_t gfp_mask); | |
792 | ],[ | |
793 | struct shrinker cache_shrinker = { | |
794 | .shrink = shrinker_cb, | |
795 | .seeks = DEFAULT_SEEKS, | |
796 | }; | |
797 | register_shrinker(&cache_shrinker); | |
798 | ],[ | |
799 | AC_MSG_RESULT(yes) | |
800 | AC_DEFINE(HAVE_3ARGS_SHRINKER_CALLBACK, 1, | |
801 | [old shrinker callback wants 3 args]) | |
802 | ],[ | |
803 | AC_MSG_RESULT(no) | |
804 | dnl # | |
805 | dnl # 3.0 - 3.11 API change | |
806 | dnl # ->shrink(struct shrinker *, | |
807 | dnl # struct shrink_control *sc) | |
808 | dnl # | |
809 | AC_MSG_CHECKING( | |
810 | [whether new 2-argument shrinker exists]) | |
811 | SPL_LINUX_TRY_COMPILE([ | |
812 | #include <linux/mm.h> | |
813 | ||
814 | int shrinker_cb(struct shrinker *, | |
815 | struct shrink_control *sc); | |
816 | ],[ | |
817 | struct shrinker cache_shrinker = { | |
818 | .shrink = shrinker_cb, | |
819 | .seeks = DEFAULT_SEEKS, | |
820 | }; | |
821 | register_shrinker(&cache_shrinker); | |
822 | ],[ | |
823 | AC_MSG_RESULT(yes) | |
824 | AC_DEFINE(HAVE_2ARGS_NEW_SHRINKER_CALLBACK, 1, | |
825 | [new shrinker callback wants 2 args]) | |
826 | ],[ | |
827 | AC_MSG_RESULT(no) | |
828 | dnl # | |
829 | dnl # 3.12 API change, | |
830 | dnl # ->shrink() is logically split in to | |
831 | dnl # ->count_objects() and ->scan_objects() | |
832 | dnl # | |
833 | AC_MSG_CHECKING( | |
834 | [whether ->count_objects callback exists]) | |
835 | SPL_LINUX_TRY_COMPILE([ | |
836 | #include <linux/mm.h> | |
837 | ||
838 | unsigned long shrinker_cb( | |
839 | struct shrinker *, | |
840 | struct shrink_control *sc); | |
841 | ],[ | |
842 | struct shrinker cache_shrinker = { | |
843 | .count_objects = shrinker_cb, | |
844 | .scan_objects = shrinker_cb, | |
845 | .seeks = DEFAULT_SEEKS, | |
846 | }; | |
847 | register_shrinker(&cache_shrinker); | |
848 | ],[ | |
849 | AC_MSG_RESULT(yes) | |
850 | AC_DEFINE(HAVE_SPLIT_SHRINKER_CALLBACK, | |
851 | 1, [->count_objects exists]) | |
852 | ],[ | |
853 | AC_MSG_ERROR(error) | |
854 | ]) | |
855 | ]) | |
856 | ]) | |
23aa63cb BB |
857 | ]) |
858 | EXTRA_KCFLAGS="$tmp_flags" | |
859 | ]) | |
860 | ||
79a3bf13 BB |
861 | dnl # |
862 | dnl # 2.6.33 API change, | |
863 | dnl # Removed .ctl_name from struct ctl_table. | |
864 | dnl # | |
865 | AC_DEFUN([SPL_AC_CTL_NAME], [ | |
866 | AC_MSG_CHECKING([whether struct ctl_table has ctl_name]) | |
867 | SPL_LINUX_TRY_COMPILE([ | |
868 | #include <linux/sysctl.h> | |
869 | ],[ | |
03318641 | 870 | struct ctl_table ctl __attribute__ ((unused)); |
79a3bf13 BB |
871 | ctl.ctl_name = 0; |
872 | ],[ | |
873 | AC_MSG_RESULT(yes) | |
874 | AC_DEFINE(HAVE_CTL_NAME, 1, [struct ctl_table has ctl_name]) | |
875 | ],[ | |
876 | AC_MSG_RESULT(no) | |
877 | ]) | |
878 | ]) | |
879 | ||
1ddf9722 YS |
880 | dnl # |
881 | dnl # 3.10 API change, | |
882 | dnl # PDE is replaced by PDE_DATA | |
883 | dnl # | |
884 | AC_DEFUN([SPL_AC_PDE_DATA], [ | |
885 | AC_MSG_CHECKING([whether PDE_DATA() is available]) | |
886 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
887 | #include <linux/proc_fs.h> | |
888 | ], [ | |
889 | PDE_DATA(NULL); | |
890 | ], [PDE_DATA], [], [ | |
891 | AC_MSG_RESULT(yes) | |
892 | AC_DEFINE(HAVE_PDE_DATA, 1, [yes]) | |
893 | ],[ | |
894 | AC_MSG_RESULT(no) | |
895 | ]) | |
896 | ]) | |
897 | ||
a54718cf RY |
898 | dnl # |
899 | dnl # 3.9 API change | |
900 | dnl # set_fs_pwd takes const struct path * | |
901 | dnl # | |
902 | AC_DEFUN([SPL_AC_SET_FS_PWD_WITH_CONST], | |
a54718cf RY |
903 | tmp_flags="$EXTRA_KCFLAGS" |
904 | EXTRA_KCFLAGS="-Werror" | |
905 | [AC_MSG_CHECKING([whether set_fs_pwd() requires const struct path *]) | |
906 | SPL_LINUX_TRY_COMPILE([ | |
907 | #include <linux/spinlock.h> | |
908 | #include <linux/fs_struct.h> | |
909 | #include <linux/path.h> | |
910 | void (*const set_fs_pwd_func) | |
911 | (struct fs_struct *, const struct path *) | |
912 | = set_fs_pwd; | |
913 | ],[ | |
914 | return 0; | |
915 | ],[ | |
916 | AC_MSG_RESULT(yes) | |
917 | AC_DEFINE(HAVE_SET_FS_PWD_WITH_CONST, 1, | |
918 | [set_fs_pwd() needs const path *]) | |
919 | ],[ | |
920 | SPL_LINUX_TRY_COMPILE([ | |
921 | #include <linux/spinlock.h> | |
922 | #include <linux/fs_struct.h> | |
923 | #include <linux/path.h> | |
924 | void (*const set_fs_pwd_func) | |
925 | (struct fs_struct *, struct path *) | |
926 | = set_fs_pwd; | |
927 | ],[ | |
928 | return 0; | |
929 | ],[ | |
930 | AC_MSG_RESULT(no) | |
931 | ],[ | |
932 | AC_MSG_ERROR(unknown) | |
933 | ]) | |
934 | ]) | |
935 | EXTRA_KCFLAGS="$tmp_flags" | |
a54718cf RY |
936 | ]) |
937 | ||
9b2048c2 BB |
938 | dnl # |
939 | dnl # 2.6.36 API change, | |
940 | dnl # The 'struct fs_struct->lock' was changed from a rwlock_t to | |
941 | dnl # a spinlock_t to improve the fastpath performance. | |
942 | dnl # | |
943 | AC_DEFUN([SPL_AC_FS_STRUCT_SPINLOCK], [ | |
944 | AC_MSG_CHECKING([whether struct fs_struct uses spinlock_t]) | |
97fd6a07 BB |
945 | tmp_flags="$EXTRA_KCFLAGS" |
946 | EXTRA_KCFLAGS="-Werror" | |
9b2048c2 BB |
947 | SPL_LINUX_TRY_COMPILE([ |
948 | #include <linux/sched.h> | |
949 | #include <linux/fs_struct.h> | |
950 | ],[ | |
abb642b9 | 951 | static struct fs_struct fs; |
9b2048c2 BB |
952 | spin_lock_init(&fs.lock); |
953 | ],[ | |
954 | AC_MSG_RESULT(yes) | |
955 | AC_DEFINE(HAVE_FS_STRUCT_SPINLOCK, 1, | |
956 | [struct fs_struct uses spinlock_t]) | |
957 | ],[ | |
958 | AC_MSG_RESULT(no) | |
959 | ]) | |
97fd6a07 | 960 | EXTRA_KCFLAGS="$tmp_flags" |
9b2048c2 BB |
961 | ]) |
962 | ||
f7fd6ddd RY |
963 | dnl # |
964 | dnl # User namespaces, use kuid_t in place of uid_t | |
965 | dnl # where available. Not strictly a user namespaces thing | |
966 | dnl # but it should prevent surprises | |
967 | dnl # | |
968 | AC_DEFUN([SPL_AC_KUIDGID_T], [ | |
969 | AC_MSG_CHECKING([whether kuid_t/kgid_t is available]) | |
970 | SPL_LINUX_TRY_COMPILE([ | |
971 | #include <linux/uidgid.h> | |
972 | ], [ | |
973 | kuid_t userid = KUIDT_INIT(0); | |
974 | kgid_t groupid = KGIDT_INIT(0); | |
975 | ],[ | |
976 | SPL_LINUX_TRY_COMPILE([ | |
977 | #include <linux/uidgid.h> | |
978 | ], [ | |
979 | kuid_t userid = 0; | |
980 | kgid_t groupid = 0; | |
981 | ],[ | |
982 | AC_MSG_RESULT(yes; optional) | |
983 | ],[ | |
984 | AC_MSG_RESULT(yes; mandatory) | |
985 | AC_DEFINE(HAVE_KUIDGID_T, 1, [kuid_t/kgid_t in use]) | |
986 | ]) | |
987 | ],[ | |
988 | AC_MSG_RESULT(no) | |
989 | ]) | |
990 | ]) | |
991 | ||
f0ff89fc BB |
992 | dnl # |
993 | dnl # 2.6.35 API change, | |
0d0b5237 | 994 | dnl # Unused 'struct dentry *' removed from vfs_fsync() prototype. |
f0ff89fc | 995 | dnl # |
0d0b5237 BB |
996 | AC_DEFUN([SPL_AC_2ARGS_VFS_FSYNC], [ |
997 | AC_MSG_CHECKING([whether vfs_fsync() wants 2 args]) | |
f0ff89fc | 998 | SPL_LINUX_TRY_COMPILE([ |
0d0b5237 | 999 | #include <linux/fs.h> |
f0ff89fc | 1000 | ],[ |
0d0b5237 | 1001 | vfs_fsync(NULL, 0); |
f0ff89fc BB |
1002 | ],[ |
1003 | AC_MSG_RESULT(yes) | |
0d0b5237 | 1004 | AC_DEFINE(HAVE_2ARGS_VFS_FSYNC, 1, [vfs_fsync() wants 2 args]) |
f0ff89fc BB |
1005 | ],[ |
1006 | AC_MSG_RESULT(no) | |
1007 | ]) | |
1008 | ]) | |
46aa7b39 | 1009 | |
bbdc6ae4 ED |
1010 | dnl # |
1011 | dnl # 3.5 API change, | |
1012 | dnl # inode_operations.truncate_range removed | |
bbdc6ae4 ED |
1013 | dnl # |
1014 | AC_DEFUN([SPL_AC_INODE_TRUNCATE_RANGE], [ | |
1015 | AC_MSG_CHECKING([whether truncate_range() inode operation is available]) | |
1016 | SPL_LINUX_TRY_COMPILE([ | |
1017 | #include <linux/fs.h> | |
1018 | ],[ | |
1019 | struct inode_operations ops; | |
1020 | ops.truncate_range = NULL; | |
1021 | ],[ | |
1022 | AC_MSG_RESULT(yes) | |
1023 | AC_DEFINE(HAVE_INODE_TRUNCATE_RANGE, 1, | |
1024 | [truncate_range() inode operation is available]) | |
1025 | ],[ | |
1026 | AC_MSG_RESULT(no) | |
1027 | ]) | |
1c7b3eaf BB |
1028 | ]) |
1029 | ||
1030 | dnl # | |
1031 | dnl # Linux 2.6.38 - 3.x API | |
1032 | dnl # | |
1033 | AC_DEFUN([SPL_AC_KERNEL_FILE_FALLOCATE], [ | |
1034 | AC_MSG_CHECKING([whether fops->fallocate() exists]) | |
1035 | SPL_LINUX_TRY_COMPILE([ | |
1036 | #include <linux/fs.h> | |
1037 | ],[ | |
1038 | long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL; | |
1039 | struct file_operations fops __attribute__ ((unused)) = { | |
1040 | .fallocate = fallocate, | |
1041 | }; | |
1042 | ],[ | |
1043 | AC_MSG_RESULT(yes) | |
1044 | AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists]) | |
1045 | ],[ | |
1046 | AC_MSG_RESULT(no) | |
1047 | ]) | |
1048 | ]) | |
1049 | ||
1050 | dnl # | |
1051 | dnl # Linux 2.6.x - 2.6.37 API | |
1052 | dnl # | |
1053 | AC_DEFUN([SPL_AC_KERNEL_INODE_FALLOCATE], [ | |
1054 | AC_MSG_CHECKING([whether iops->fallocate() exists]) | |
1055 | SPL_LINUX_TRY_COMPILE([ | |
1056 | #include <linux/fs.h> | |
1057 | ],[ | |
1058 | long (*fallocate) (struct inode *, int, loff_t, loff_t) = NULL; | |
1059 | struct inode_operations fops __attribute__ ((unused)) = { | |
1060 | .fallocate = fallocate, | |
1061 | }; | |
1062 | ],[ | |
1063 | AC_MSG_RESULT(yes) | |
1064 | AC_DEFINE(HAVE_INODE_FALLOCATE, 1, [fops->fallocate() exists]) | |
1065 | ],[ | |
1066 | AC_MSG_RESULT(no) | |
1067 | ]) | |
1068 | ]) | |
1069 | ||
1070 | dnl # | |
1071 | dnl # PaX Linux 2.6.38 - 3.x API | |
1072 | dnl # | |
1073 | AC_DEFUN([SPL_AC_PAX_KERNEL_FILE_FALLOCATE], [ | |
1074 | AC_MSG_CHECKING([whether fops->fallocate() exists]) | |
1075 | SPL_LINUX_TRY_COMPILE([ | |
1076 | #include <linux/fs.h> | |
1077 | ],[ | |
1078 | long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL; | |
1079 | struct file_operations_no_const fops __attribute__ ((unused)) = { | |
1080 | .fallocate = fallocate, | |
1081 | }; | |
1082 | ],[ | |
1083 | AC_MSG_RESULT(yes) | |
1084 | AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists]) | |
1085 | ],[ | |
1086 | AC_MSG_RESULT(no) | |
1087 | ]) | |
1088 | ]) | |
1089 | ||
1090 | dnl # | |
1091 | dnl # The fallocate callback was moved from the inode_operations | |
1092 | dnl # structure to the file_operations structure. | |
1093 | dnl # | |
1094 | AC_DEFUN([SPL_AC_KERNEL_FALLOCATE], [ | |
1095 | SPL_AC_KERNEL_FILE_FALLOCATE | |
1096 | SPL_AC_KERNEL_INODE_FALLOCATE | |
1097 | SPL_AC_PAX_KERNEL_FILE_FALLOCATE | |
1098 | ]) | |
bbdc6ae4 | 1099 | |
42b3ce62 BB |
1100 | dnl # |
1101 | dnl # zlib inflate compat, | |
1102 | dnl # Verify the kernel has CONFIG_ZLIB_INFLATE support enabled. | |
1103 | dnl # | |
1104 | AC_DEFUN([SPL_AC_CONFIG_ZLIB_INFLATE], [ | |
1105 | AC_MSG_CHECKING([whether CONFIG_ZLIB_INFLATE is defined]) | |
1106 | SPL_LINUX_TRY_COMPILE([ | |
1107 | #if !defined(CONFIG_ZLIB_INFLATE) && \ | |
1108 | !defined(CONFIG_ZLIB_INFLATE_MODULE) | |
1109 | #error CONFIG_ZLIB_INFLATE not defined | |
1110 | #endif | |
1111 | ],[ ],[ | |
1112 | AC_MSG_RESULT([yes]) | |
1113 | ],[ | |
1114 | AC_MSG_RESULT([no]) | |
1115 | AC_MSG_ERROR([ | |
1116 | *** This kernel does not include the required zlib inflate support. | |
1117 | *** Rebuild the kernel with CONFIG_ZLIB_INFLATE=y|m set.]) | |
1118 | ]) | |
1119 | ]) | |
1120 | ||
1121 | dnl # | |
1122 | dnl # zlib deflate compat, | |
1123 | dnl # Verify the kernel has CONFIG_ZLIB_DEFLATE support enabled. | |
1124 | dnl # | |
1125 | AC_DEFUN([SPL_AC_CONFIG_ZLIB_DEFLATE], [ | |
1126 | AC_MSG_CHECKING([whether CONFIG_ZLIB_DEFLATE is defined]) | |
1127 | SPL_LINUX_TRY_COMPILE([ | |
1128 | #if !defined(CONFIG_ZLIB_DEFLATE) && \ | |
1129 | !defined(CONFIG_ZLIB_DEFLATE_MODULE) | |
1130 | #error CONFIG_ZLIB_DEFLATE not defined | |
1131 | #endif | |
1132 | ],[ ],[ | |
1133 | AC_MSG_RESULT([yes]) | |
1134 | ],[ | |
1135 | AC_MSG_RESULT([no]) | |
1136 | AC_MSG_ERROR([ | |
1137 | *** This kernel does not include the required zlib deflate support. | |
1138 | *** Rebuild the kernel with CONFIG_ZLIB_DEFLATE=y|m set.]) | |
1139 | ]) | |
1140 | ]) | |
1141 | ||
4b9dddf4 NB |
1142 | dnl # |
1143 | dnl # config trim unused symbols, | |
1144 | dnl # Verify the kernel has CONFIG_TRIM_UNUSED_KSYMS DISABLED. | |
1145 | dnl # | |
1146 | AC_DEFUN([SPL_AC_CONFIG_TRIM_UNUSED_KSYMS], [ | |
1147 | AC_MSG_CHECKING([whether CONFIG_TRIM_UNUSED_KSYM is disabled]) | |
1148 | SPL_LINUX_TRY_COMPILE([ | |
1149 | #if defined(CONFIG_TRIM_UNUSED_KSYMS) | |
1150 | #error CONFIG_TRIM_UNUSED_KSYMS not defined | |
1151 | #endif | |
1152 | ],[ ],[ | |
1153 | AC_MSG_RESULT([yes]) | |
1154 | ],[ | |
1155 | AC_MSG_RESULT([no]) | |
1156 | AC_MSG_ERROR([ | |
1157 | *** This kernel has unused symbols trimming enabled, please disable. | |
1158 | *** Rebuild the kernel with CONFIG_TRIM_UNUSED_KSYMS=n set.]) | |
1159 | ]) | |
1160 | ]) | |
1161 | ||
3dfc591a BB |
1162 | dnl # |
1163 | dnl # 2.6.39 API compat, | |
1164 | dnl # The function zlib_deflate_workspacesize() now take 2 arguments. | |
1165 | dnl # This was done to avoid always having to allocate the maximum size | |
1166 | dnl # workspace (268K). The caller can now specific the windowBits and | |
1167 | dnl # memLevel compression parameters to get a smaller workspace. | |
1168 | dnl # | |
1169 | AC_DEFUN([SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE], | |
1170 | [AC_MSG_CHECKING([whether zlib_deflate_workspacesize() wants 2 args]) | |
1171 | SPL_LINUX_TRY_COMPILE([ | |
1172 | #include <linux/zlib.h> | |
1173 | ],[ | |
1174 | return zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL); | |
1175 | ],[ | |
1176 | AC_MSG_RESULT(yes) | |
1177 | AC_DEFINE(HAVE_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE, 1, | |
1178 | [zlib_deflate_workspacesize() wants 2 args]) | |
1179 | ],[ | |
1180 | AC_MSG_RESULT(no) | |
1181 | ]) | |
1182 | ]) | |
a55bcaad BB |
1183 | |
1184 | dnl # | |
1185 | dnl # 2.6.39 API change, | |
1186 | dnl # Shrinker adjust to use common shrink_control structure. | |
1187 | dnl # | |
1188 | AC_DEFUN([SPL_AC_SHRINK_CONTROL_STRUCT], [ | |
1189 | AC_MSG_CHECKING([whether struct shrink_control exists]) | |
1190 | SPL_LINUX_TRY_COMPILE([ | |
1191 | #include <linux/mm.h> | |
1192 | ],[ | |
1193 | struct shrink_control sc __attribute__ ((unused)); | |
1194 | ||
1195 | sc.nr_to_scan = 0; | |
1196 | sc.gfp_mask = GFP_KERNEL; | |
1197 | ],[ | |
1198 | AC_MSG_RESULT(yes) | |
1199 | AC_DEFINE(HAVE_SHRINK_CONTROL_STRUCT, 1, | |
1200 | [struct shrink_control exists]) | |
1201 | ],[ | |
1202 | AC_MSG_RESULT(no) | |
1203 | ]) | |
1204 | ]) | |
588d9004 DH |
1205 | |
1206 | dnl # | |
1207 | dnl # 3.1 API Change | |
1208 | dnl # | |
1209 | dnl # The rw_semaphore.wait_lock member was changed from spinlock_t to | |
1210 | dnl # raw_spinlock_t at commit ddb6c9b58a19edcfac93ac670b066c836ff729f1. | |
1211 | dnl # | |
1212 | AC_DEFUN([SPL_AC_RWSEM_SPINLOCK_IS_RAW], [ | |
1213 | AC_MSG_CHECKING([whether struct rw_semaphore member wait_lock is raw]) | |
1214 | tmp_flags="$EXTRA_KCFLAGS" | |
1215 | EXTRA_KCFLAGS="-Werror" | |
1216 | SPL_LINUX_TRY_COMPILE([ | |
1217 | #include <linux/rwsem.h> | |
1218 | ],[ | |
1219 | struct rw_semaphore dummy_semaphore __attribute__ ((unused)); | |
7a35f2b4 CC |
1220 | raw_spinlock_t dummy_lock __attribute__ ((unused)) = |
1221 | __RAW_SPIN_LOCK_INITIALIZER(dummy_lock); | |
588d9004 DH |
1222 | dummy_semaphore.wait_lock = dummy_lock; |
1223 | ],[ | |
1224 | AC_MSG_RESULT(yes) | |
1225 | AC_DEFINE(RWSEM_SPINLOCK_IS_RAW, 1, | |
1226 | [struct rw_semaphore member wait_lock is raw_spinlock_t]) | |
1227 | ],[ | |
1228 | AC_MSG_RESULT(no) | |
1229 | ]) | |
1230 | EXTRA_KCFLAGS="$tmp_flags" | |
1231 | ]) | |
10087fe1 | 1232 | |
f58040c0 CC |
1233 | dnl # |
1234 | dnl # 3.16 API Change | |
1235 | dnl # | |
1236 | dnl # rwsem-spinlock "->activity" changed to "->count" | |
1237 | dnl # | |
1238 | AC_DEFUN([SPL_AC_RWSEM_ACTIVITY], [ | |
1239 | AC_MSG_CHECKING([whether struct rw_semaphore has member activity]) | |
1240 | tmp_flags="$EXTRA_KCFLAGS" | |
1241 | EXTRA_KCFLAGS="-Werror" | |
1242 | SPL_LINUX_TRY_COMPILE([ | |
1243 | #include <linux/rwsem.h> | |
1244 | ],[ | |
1245 | struct rw_semaphore dummy_semaphore __attribute__ ((unused)); | |
1246 | dummy_semaphore.activity = 0; | |
1247 | ],[ | |
1248 | AC_MSG_RESULT(yes) | |
1249 | AC_DEFINE(HAVE_RWSEM_ACTIVITY, 1, | |
1250 | [struct rw_semaphore has member activity]) | |
1251 | ],[ | |
1252 | AC_MSG_RESULT(no) | |
1253 | ]) | |
1254 | EXTRA_KCFLAGS="$tmp_flags" | |
1255 | ]) | |
1256 | ||
b7c7008b BB |
1257 | dnl # |
1258 | dnl # 4.8 API Change | |
1259 | dnl # | |
1260 | dnl # rwsem "->count" changed to atomic_long_t type | |
1261 | dnl # | |
1262 | AC_DEFUN([SPL_AC_RWSEM_ATOMIC_LONG_COUNT], [ | |
1263 | AC_MSG_CHECKING( | |
1264 | [whether struct rw_semaphore has atomic_long_t member count]) | |
1265 | tmp_flags="$EXTRA_KCFLAGS" | |
1266 | EXTRA_KCFLAGS="-Werror" | |
1267 | SPL_LINUX_TRY_COMPILE([ | |
1268 | #include <linux/rwsem.h> | |
1269 | ],[ | |
1270 | DECLARE_RWSEM(dummy_semaphore); | |
1271 | (void) atomic_long_read(&dummy_semaphore.count); | |
1272 | ],[ | |
1273 | AC_MSG_RESULT(yes) | |
1274 | AC_DEFINE(HAVE_RWSEM_ATOMIC_LONG_COUNT, 1, | |
1275 | [struct rw_semaphore has atomic_long_t member count]) | |
1276 | ],[ | |
1277 | AC_MSG_RESULT(no) | |
1278 | ]) | |
1279 | EXTRA_KCFLAGS="$tmp_flags" | |
1280 | ]) | |
1281 | ||
10087fe1 RY |
1282 | dnl # |
1283 | dnl # 3.9 API change, | |
1284 | dnl # Moved things from linux/sched.h to linux/sched/rt.h | |
1285 | dnl # | |
1286 | AC_DEFUN([SPL_AC_SCHED_RT_HEADER], | |
1287 | [AC_MSG_CHECKING([whether header linux/sched/rt.h exists]) | |
1288 | SPL_LINUX_TRY_COMPILE([ | |
1289 | #include <linux/sched.h> | |
1290 | #include <linux/sched/rt.h> | |
1291 | ],[ | |
1292 | return 0; | |
1293 | ],[ | |
1294 | AC_DEFINE(HAVE_SCHED_RT_HEADER, 1, [linux/sched/rt.h exists]) | |
1295 | AC_MSG_RESULT(yes) | |
1296 | ],[ | |
1297 | AC_MSG_RESULT(no) | |
1298 | ]) | |
1299 | ]) | |
2a305c34 | 1300 | |
9a054d54 OF |
1301 | dnl # |
1302 | dnl # 4.11 API change, | |
1303 | dnl # Moved things from linux/sched.h to linux/sched/signal.h | |
1304 | dnl # | |
1305 | AC_DEFUN([SPL_AC_SCHED_SIGNAL_HEADER], | |
1306 | [AC_MSG_CHECKING([whether header linux/sched/signal.h exists]) | |
1307 | SPL_LINUX_TRY_COMPILE([ | |
1308 | #include <linux/sched.h> | |
1309 | #include <linux/sched/signal.h> | |
1310 | ],[ | |
1311 | return 0; | |
1312 | ],[ | |
1313 | AC_DEFINE(HAVE_SCHED_SIGNAL_HEADER, 1, [linux/sched/signal.h exists]) | |
1314 | AC_MSG_RESULT(yes) | |
1315 | ],[ | |
1316 | AC_MSG_RESULT(no) | |
1317 | ]) | |
1318 | ]) | |
94b1ab2a | 1319 | |
2a305c34 | 1320 | dnl # |
94b1ab2a OF |
1321 | dnl # 4.11 API, a528d35e@torvalds/linux |
1322 | dnl # vfs_getattr(const struct path *p, struct kstat *s, u32 m, unsigned int f) | |
1323 | dnl # | |
1324 | AC_DEFUN([SPL_AC_4ARGS_VFS_GETATTR], [ | |
1325 | AC_MSG_CHECKING([whether vfs_getattr() wants 4 args]) | |
1326 | SPL_LINUX_TRY_COMPILE([ | |
1327 | #include <linux/fs.h> | |
1328 | ],[ | |
1329 | vfs_getattr((const struct path *)NULL, | |
1330 | (struct kstat *)NULL, | |
1331 | (u32)0, | |
1332 | (unsigned int)0); | |
1333 | ],[ | |
1334 | AC_MSG_RESULT(yes) | |
1335 | AC_DEFINE(HAVE_4ARGS_VFS_GETATTR, 1, | |
1336 | [vfs_getattr wants 4 args]) | |
1337 | ],[ | |
1338 | AC_MSG_RESULT(no) | |
1339 | ]) | |
1340 | ]) | |
1341 | ||
1342 | dnl # | |
1343 | dnl # 3.9 API | |
1344 | dnl # vfs_getattr(struct path *p, struct kstat *s) | |
2a305c34 RY |
1345 | dnl # |
1346 | AC_DEFUN([SPL_AC_2ARGS_VFS_GETATTR], [ | |
94b1ab2a | 1347 | AC_MSG_CHECKING([whether vfs_getattr() wants 2 args]) |
2a305c34 RY |
1348 | SPL_LINUX_TRY_COMPILE([ |
1349 | #include <linux/fs.h> | |
1350 | ],[ | |
1351 | vfs_getattr((struct path *) NULL, | |
1352 | (struct kstat *)NULL); | |
1353 | ],[ | |
94b1ab2a | 1354 | AC_MSG_RESULT(yes) |
2a305c34 | 1355 | AC_DEFINE(HAVE_2ARGS_VFS_GETATTR, 1, |
94b1ab2a | 1356 | [vfs_getattr wants 2 args]) |
2a305c34 | 1357 | ],[ |
94b1ab2a OF |
1358 | AC_MSG_RESULT(no) |
1359 | ]) | |
1360 | ]) | |
1361 | ||
1362 | dnl # | |
1363 | dnl # <3.9 API | |
1364 | dnl # vfs_getattr(struct vfsmount *v, struct dentry *d, struct kstat *k) | |
1365 | dnl # | |
1366 | AC_DEFUN([SPL_AC_3ARGS_VFS_GETATTR], [ | |
1367 | AC_MSG_CHECKING([whether vfs_getattr() wants 3 args]) | |
1368 | SPL_LINUX_TRY_COMPILE([ | |
1369 | #include <linux/fs.h> | |
1370 | ],[ | |
1371 | vfs_getattr((struct vfsmount *)NULL, | |
1372 | (struct dentry *)NULL, | |
1373 | (struct kstat *)NULL); | |
1374 | ],[ | |
1375 | AC_MSG_RESULT(yes) | |
1376 | AC_DEFINE(HAVE_3ARGS_VFS_GETATTR, 1, | |
1377 | [vfs_getattr wants 3 args]) | |
1378 | ],[ | |
1379 | AC_MSG_RESULT(no) | |
2a305c34 RY |
1380 | ]) |
1381 | ]) | |
184c6873 NB |
1382 | |
1383 | dnl # | |
1384 | dnl # 2.6.36 API compatibility. | |
1385 | dnl # Added usleep_range timer. | |
1386 | dnl # usleep_range is a finer precision implementation of msleep | |
1387 | dnl # designed to be a drop-in replacement for udelay where a precise | |
1388 | dnl # sleep / busy-wait is unnecessary. | |
1389 | dnl # | |
1390 | AC_DEFUN([SPL_AC_USLEEP_RANGE], [ | |
1391 | AC_MSG_CHECKING([whether usleep_range() is available]) | |
1392 | SPL_LINUX_TRY_COMPILE([ | |
1393 | #include <linux/delay.h> | |
1394 | ],[ | |
1395 | usleep_range(0, 0); | |
1396 | ],[ | |
1397 | AC_MSG_RESULT(yes) | |
1398 | AC_DEFINE(HAVE_USLEEP_RANGE, 1, | |
1399 | [usleep_range is available]) | |
1400 | ],[ | |
1401 | AC_MSG_RESULT(no) | |
1402 | ]) | |
1403 | ]) | |
a073aeb0 BB |
1404 | |
1405 | dnl # | |
1406 | dnl # 2.6.35 API change, | |
1407 | dnl # The cachep->gfpflags member was renamed cachep->allocflags. These are | |
1408 | dnl # private allocation flags which are applied when allocating a new slab | |
1409 | dnl # in kmem_getpages(). Unfortunately there is no public API for setting | |
1410 | dnl # non-default flags. | |
1411 | dnl # | |
1412 | AC_DEFUN([SPL_AC_KMEM_CACHE_ALLOCFLAGS], [ | |
1413 | AC_MSG_CHECKING([whether struct kmem_cache has allocflags]) | |
1414 | SPL_LINUX_TRY_COMPILE([ | |
1415 | #include <linux/slab.h> | |
1416 | ],[ | |
1417 | struct kmem_cache cachep __attribute__ ((unused)); | |
1418 | cachep.allocflags = GFP_KERNEL; | |
1419 | ],[ | |
1420 | AC_MSG_RESULT(yes) | |
1421 | AC_DEFINE(HAVE_KMEM_CACHE_ALLOCFLAGS, 1, | |
1422 | [struct kmem_cache has allocflags]) | |
1423 | ],[ | |
1424 | AC_MSG_RESULT(no) | |
1425 | ||
1426 | AC_MSG_CHECKING([whether struct kmem_cache has gfpflags]) | |
1427 | SPL_LINUX_TRY_COMPILE([ | |
1428 | #include <linux/slab.h> | |
1429 | ],[ | |
1430 | struct kmem_cache cachep __attribute__ ((unused)); | |
1431 | cachep.gfpflags = GFP_KERNEL; | |
1432 | ],[ | |
1433 | AC_MSG_RESULT(yes) | |
1434 | AC_DEFINE(HAVE_KMEM_CACHE_GFPFLAGS, 1, | |
1435 | [struct kmem_cache has gfpflags]) | |
1436 | ],[ | |
1437 | AC_MSG_RESULT(no) | |
1438 | ]) | |
1439 | ]) | |
1440 | ]) | |
2fc44f66 NB |
1441 | |
1442 | dnl # | |
1443 | dnl # 3.17 API change, | |
1444 | dnl # wait_on_bit() no longer requires an action argument. The former | |
1445 | dnl # "wait_on_bit" interface required an 'action' function to be provided | |
1446 | dnl # which does the actual waiting. There were over 20 such functions in the | |
1447 | dnl # kernel, many of them identical, though most cases can be satisfied by one | |
1448 | dnl # of just two functions: one which uses io_schedule() and one which just | |
1449 | dnl # uses schedule(). This API change was made to consolidate all of those | |
1450 | dnl # redundant wait functions. | |
1451 | dnl # | |
1452 | AC_DEFUN([SPL_AC_WAIT_ON_BIT], [ | |
1453 | AC_MSG_CHECKING([whether wait_on_bit() takes an action]) | |
1454 | SPL_LINUX_TRY_COMPILE([ | |
1455 | #include <linux/wait.h> | |
1456 | ],[ | |
1457 | int (*action)(void *) = NULL; | |
1458 | wait_on_bit(NULL, 0, action, 0); | |
1459 | ],[ | |
1460 | AC_MSG_RESULT(yes) | |
1461 | AC_DEFINE(HAVE_WAIT_ON_BIT_ACTION, 1, [yes]) | |
1462 | ],[ | |
1463 | AC_MSG_RESULT(no) | |
1464 | ]) | |
1465 | ]) | |
cdd39dd2 | 1466 | |
fdbc1ba9 CC |
1467 | dnl # |
1468 | dnl # 4.7 API change | |
1469 | dnl # i_mutex is changed to i_rwsem. Instead of directly using | |
1470 | dnl # i_mutex/i_rwsem, we should use inode_lock() and inode_lock_shared() | |
1471 | dnl # We test inode_lock_shared because inode_lock is introduced earlier. | |
1472 | dnl # | |
1473 | AC_DEFUN([SPL_AC_INODE_LOCK], [ | |
1474 | AC_MSG_CHECKING([whether inode_lock_shared() exists]) | |
1475 | tmp_flags="$EXTRA_KCFLAGS" | |
1476 | EXTRA_KCFLAGS="-Werror" | |
1477 | SPL_LINUX_TRY_COMPILE([ | |
1478 | #include <linux/fs.h> | |
1479 | ],[ | |
1480 | struct inode *inode = NULL; | |
1481 | inode_lock_shared(inode); | |
1482 | ],[ | |
1483 | AC_MSG_RESULT(yes) | |
1484 | AC_DEFINE(HAVE_INODE_LOCK_SHARED, 1, [yes]) | |
1485 | ],[ | |
1486 | AC_MSG_RESULT(no) | |
1487 | ]) | |
1488 | EXTRA_KCFLAGS="$tmp_flags" | |
1489 | ]) | |
ae7eda1d CC |
1490 | |
1491 | dnl # | |
1492 | dnl # 4.9 API change | |
1493 | dnl # group_info changed from 2d array via >blocks to 1d array via ->gid | |
1494 | dnl # | |
1495 | AC_DEFUN([SPL_AC_GROUP_INFO_GID], [ | |
1496 | AC_MSG_CHECKING([whether group_info->gid exists]) | |
1497 | tmp_flags="$EXTRA_KCFLAGS" | |
1498 | EXTRA_KCFLAGS="-Werror" | |
1499 | SPL_LINUX_TRY_COMPILE([ | |
1500 | #include <linux/cred.h> | |
1501 | ],[ | |
1502 | struct group_info *gi = groups_alloc(1); | |
1503 | gi->gid[0] = KGIDT_INIT(0); | |
1504 | ],[ | |
1505 | AC_MSG_RESULT(yes) | |
1506 | AC_DEFINE(HAVE_GROUP_INFO_GID, 1, [group_info->gid exists]) | |
1507 | ],[ | |
1508 | AC_MSG_RESULT(no) | |
1509 | ]) | |
1510 | EXTRA_KCFLAGS="$tmp_flags" | |
1511 | ]) | |
0194e4a0 KT |
1512 | |
1513 | dnl # | |
1514 | dnl # grsecurity API change, | |
1515 | dnl # kmem_cache_create() with SLAB_USERCOPY flag replaced by | |
1516 | dnl # kmem_cache_create_usercopy(). | |
1517 | dnl # | |
1518 | AC_DEFUN([SPL_AC_KMEM_CACHE_CREATE_USERCOPY], [ | |
1519 | AC_MSG_CHECKING([whether kmem_cache_create_usercopy() exists]) | |
1520 | tmp_flags="$EXTRA_KCFLAGS" | |
1521 | EXTRA_KCFLAGS="-Werror" | |
1522 | SPL_LINUX_TRY_COMPILE([ | |
1523 | #include <linux/slab.h> | |
1524 | static void ctor(void *foo) | |
1525 | { | |
1526 | // fake ctor | |
1527 | } | |
1528 | ],[ | |
1529 | struct kmem_cache *skc_linux_cache; | |
1530 | const char *name = "test"; | |
1531 | size_t size = 4096; | |
1532 | size_t align = 8; | |
1533 | unsigned long flags = 0; | |
1534 | size_t useroffset = 0; | |
1535 | size_t usersize = size - useroffset; | |
1536 | ||
1537 | skc_linux_cache = kmem_cache_create_usercopy( | |
1538 | name, size, align, flags, useroffset, usersize, ctor); | |
1539 | ],[ | |
1540 | AC_MSG_RESULT(yes) | |
1541 | AC_DEFINE(HAVE_KMEM_CACHE_CREATE_USERCOPY, 1, | |
1542 | [kmem_cache_create_usercopy() exists]) | |
1543 | ],[ | |
1544 | AC_MSG_RESULT(no) | |
1545 | ]) | |
1546 | EXTRA_KCFLAGS="$tmp_flags" | |
1547 | ]) | |
94411751 BB |
1548 | |
1549 | dnl # | |
1550 | dnl # 4.13 API change | |
1551 | dnl # Renamed struct wait_queue -> struct wait_queue_entry. | |
1552 | dnl # | |
1553 | AC_DEFUN([SPL_AC_WAIT_QUEUE_ENTRY_T], [ | |
1554 | AC_MSG_CHECKING([whether wait_queue_entry_t exists]) | |
1555 | SPL_LINUX_TRY_COMPILE([ | |
1556 | #include <linux/wait.h> | |
1557 | ],[ | |
1558 | wait_queue_entry_t *entry __attribute__ ((unused)); | |
1559 | ],[ | |
1560 | AC_MSG_RESULT(yes) | |
1561 | AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY_T, 1, | |
1562 | [wait_queue_entry_t exists]) | |
1563 | ],[ | |
1564 | AC_MSG_RESULT(no) | |
1565 | ]) | |
1566 | ]) | |
1567 | ||
1568 | dnl # | |
1569 | dnl # 4.13 API change | |
1570 | dnl # Renamed wait_queue_head::task_list -> wait_queue_head::head | |
1571 | dnl # Renamed wait_queue_entry::task_list -> wait_queue_entry::entry | |
1572 | dnl # | |
1573 | AC_DEFUN([SPL_AC_WAIT_QUEUE_HEAD_ENTRY], [ | |
1574 | AC_MSG_CHECKING([whether wq_head->head and wq_entry->entry exist]) | |
1575 | SPL_LINUX_TRY_COMPILE([ | |
1576 | #include <linux/wait.h> | |
1577 | ||
1578 | #ifdef HAVE_WAIT_QUEUE_ENTRY_T | |
1579 | typedef wait_queue_head_t spl_wait_queue_head_t; | |
1580 | typedef wait_queue_entry_t spl_wait_queue_entry_t; | |
1581 | #else | |
1582 | typedef wait_queue_head_t spl_wait_queue_head_t; | |
1583 | typedef wait_queue_t spl_wait_queue_entry_t; | |
1584 | #endif | |
1585 | ],[ | |
1586 | spl_wait_queue_head_t wq_head; | |
1587 | spl_wait_queue_entry_t wq_entry; | |
1588 | struct list_head *head __attribute__ ((unused)); | |
1589 | struct list_head *entry __attribute__ ((unused)); | |
1590 | ||
1591 | head = &wq_head.head; | |
1592 | entry = &wq_entry.entry; | |
1593 | ],[ | |
1594 | AC_MSG_RESULT(yes) | |
1595 | AC_DEFINE(HAVE_WAIT_QUEUE_HEAD_ENTRY, 1, | |
1596 | [wq_head->head and wq_entry->entry exist]) | |
1597 | ],[ | |
1598 | AC_MSG_RESULT(no) | |
1599 | ]) | |
1600 | ]) | |
ed19bccf | 1601 | |
23602fdb BB |
1602 | dnl # |
1603 | dnl # 3.19 API change | |
1604 | dnl # The io_schedule_timeout() function is present in all 2.6.32 kernels | |
1605 | dnl # but it was not exported until Linux 3.19. The RHEL 7.x kernels which | |
1606 | dnl # are based on a 3.10 kernel do export this symbol. | |
1607 | dnl # | |
1608 | AC_DEFUN([SPL_AC_IO_SCHEDULE_TIMEOUT], [ | |
1609 | AC_MSG_CHECKING([whether io_schedule_timeout() is available]) | |
1610 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1611 | #include <linux/sched.h> | |
1612 | ], [ | |
1613 | (void) io_schedule_timeout(1); | |
1614 | ], [io_schedule_timeout], [], [ | |
1615 | AC_MSG_RESULT(yes) | |
1616 | AC_DEFINE(HAVE_IO_SCHEDULE_TIMEOUT, 1, [yes]) | |
1617 | ],[ | |
1618 | AC_MSG_RESULT(no) | |
1619 | ]) | |
1620 | ]) | |
1621 | ||
ed19bccf BB |
1622 | dnl # |
1623 | dnl # 4.14 API change | |
1624 | dnl # kernel_write() which was introduced in 3.9 was updated to take | |
1625 | dnl # the offset as a pointer which is needed by vn_rdwr(). | |
1626 | dnl # | |
1627 | AC_DEFUN([SPL_AC_KERNEL_WRITE], [ | |
1628 | AC_MSG_CHECKING([whether kernel_write() takes loff_t pointer]) | |
1629 | tmp_flags="$EXTRA_KCFLAGS" | |
1630 | EXTRA_KCFLAGS="-Werror" | |
1631 | SPL_LINUX_TRY_COMPILE([ | |
1632 | #include <linux/fs.h> | |
1633 | ],[ | |
1634 | struct file *file = NULL; | |
1635 | const void *buf = NULL; | |
1636 | size_t count = 0; | |
1637 | loff_t *pos = NULL; | |
1638 | ssize_t ret; | |
1639 | ||
1640 | ret = kernel_write(file, buf, count, pos); | |
1641 | ],[ | |
1642 | AC_MSG_RESULT(yes) | |
1643 | AC_DEFINE(HAVE_KERNEL_WRITE_PPOS, 1, | |
1644 | [kernel_write() take loff_t pointer]) | |
1645 | ],[ | |
1646 | AC_MSG_RESULT(no) | |
1647 | ]) | |
1648 | EXTRA_KCFLAGS="$tmp_flags" | |
1649 | ]) | |
1650 | ||
1651 | dnl # | |
1652 | dnl # 4.14 API change | |
1653 | dnl # kernel_read() which has existed for forever was updated to take | |
1654 | dnl # the offset as a pointer which is needed by vn_rdwr(). | |
1655 | dnl # | |
1656 | AC_DEFUN([SPL_AC_KERNEL_READ], [ | |
1657 | AC_MSG_CHECKING([whether kernel_read() takes loff_t pointer]) | |
1658 | tmp_flags="$EXTRA_KCFLAGS" | |
1659 | EXTRA_KCFLAGS="-Werror" | |
1660 | SPL_LINUX_TRY_COMPILE([ | |
1661 | #include <linux/fs.h> | |
1662 | ],[ | |
1663 | struct file *file = NULL; | |
1664 | void *buf = NULL; | |
1665 | size_t count = 0; | |
1666 | loff_t *pos = NULL; | |
1667 | ssize_t ret; | |
1668 | ||
1669 | ret = kernel_read(file, buf, count, pos); | |
1670 | ],[ | |
1671 | AC_MSG_RESULT(yes) | |
1672 | AC_DEFINE(HAVE_KERNEL_READ_PPOS, 1, | |
1673 | [kernel_read() take loff_t pointer]) | |
1674 | ],[ | |
1675 | AC_MSG_RESULT(no) | |
1676 | ]) | |
1677 | EXTRA_KCFLAGS="$tmp_flags" | |
1678 | ]) | |
c9821f1c TH |
1679 | |
1680 | dnl # | |
1681 | dnl # 4.15 API change | |
1682 | dnl # https://lkml.org/lkml/2017/11/25/90 | |
1683 | dnl # Check if timer_list.func get passed a timer_list or an unsigned long | |
1684 | dnl # (older kernels). Also sanity check the from_timer() and timer_setup() | |
1685 | dnl # macros are available as well, since they will be used in the same newer | |
1686 | dnl # kernels that support the new timer_list.func signature. | |
1687 | dnl # | |
1688 | AC_DEFUN([SPL_AC_KERNEL_TIMER_FUNCTION_TIMER_LIST], [ | |
1689 | AC_MSG_CHECKING([whether timer_list.function gets a timer_list]) | |
1690 | tmp_flags="$EXTRA_KCFLAGS" | |
1691 | EXTRA_KCFLAGS="-Werror" | |
1692 | SPL_LINUX_TRY_COMPILE([ | |
1693 | #include <linux/timer.h> | |
1694 | void task_expire(struct timer_list *tl) {} | |
1695 | ],[ | |
1696 | #ifndef from_timer | |
1697 | #error "No from_timer() macro" | |
1698 | #endif | |
1699 | ||
1700 | struct timer_list timer; | |
1701 | timer.function = task_expire; | |
1702 | timer_setup(&timer, NULL, 0); | |
1703 | ],[ | |
1704 | AC_MSG_RESULT(yes) | |
1705 | AC_DEFINE(HAVE_KERNEL_TIMER_FUNCTION_TIMER_LIST, 1, | |
1706 | [timer_list.function gets a timer_list]) | |
1707 | ],[ | |
1708 | AC_MSG_RESULT(no) | |
1709 | ]) | |
1710 | EXTRA_KCFLAGS="$tmp_flags" | |
1711 | ]) |