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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 | |
7731d46b | 11 | SPL_AC_KERNEL_CONFIG |
86933a6e | 12 | |
86933a6e BB |
13 | if test "${LINUX_OBJ}" != "${LINUX}"; then |
14 | KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ" | |
15 | fi | |
86933a6e | 16 | AC_SUBST(KERNELMAKE_PARAMS) |
a7958f7e BB |
17 | |
18 | KERNELCPPFLAGS="$KERNELCPPFLAGS -Wstrict-prototypes" | |
86933a6e BB |
19 | AC_SUBST(KERNELCPPFLAGS) |
20 | ||
21 | SPL_AC_DEBUG | |
4b2220f0 | 22 | SPL_AC_DEBUG_LOG |
86933a6e | 23 | SPL_AC_DEBUG_KMEM |
055ffd98 | 24 | SPL_AC_DEBUG_KMEM_TRACKING |
0408008b | 25 | SPL_AC_TEST_MODULE |
5e9b5d83 | 26 | SPL_AC_ATOMIC_SPINLOCK |
302b88e6 BB |
27 | SPL_AC_TYPE_ATOMIC64_CMPXCHG |
28 | SPL_AC_TYPE_ATOMIC64_XCHG | |
d04c8a56 | 29 | SPL_AC_TYPE_UINTPTR_T |
86933a6e BB |
30 | SPL_AC_3ARGS_INIT_WORK |
31 | SPL_AC_2ARGS_REGISTER_SYSCTL | |
32 | SPL_AC_SET_SHRINKER | |
23aa63cb | 33 | SPL_AC_3ARGS_SHRINKER_CALLBACK |
86933a6e BB |
34 | SPL_AC_PATH_IN_NAMEIDATA |
35 | SPL_AC_TASK_CURR | |
36 | SPL_AC_CTL_UNNUMBERED | |
79a3bf13 | 37 | SPL_AC_CTL_NAME |
86933a6e BB |
38 | SPL_AC_FLS64 |
39 | SPL_AC_DEVICE_CREATE | |
40 | SPL_AC_5ARGS_DEVICE_CREATE | |
41 | SPL_AC_CLASS_DEVICE_CREATE | |
42 | SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT | |
43 | SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE | |
44 | SPL_AC_TIMESPEC_SUB | |
45 | SPL_AC_INIT_UTSNAME | |
46 | SPL_AC_FDTABLE_HEADER | |
47 | SPL_AC_FILES_FDTABLE | |
e0093fea | 48 | SPL_AC_CLEAR_CLOSE_ON_EXEC |
86933a6e BB |
49 | SPL_AC_UACCESS_HEADER |
50 | SPL_AC_KMALLOC_NODE | |
51 | SPL_AC_MONOTONIC_CLOCK | |
52 | SPL_AC_INODE_I_MUTEX | |
4d54fdee | 53 | SPL_AC_MUTEX_OWNER |
86fd39f3 | 54 | SPL_AC_MUTEX_OWNER_TASK_STRUCT |
86933a6e | 55 | SPL_AC_MUTEX_LOCK_NESTED |
86933a6e BB |
56 | SPL_AC_3ARGS_ON_EACH_CPU |
57 | SPL_AC_KALLSYMS_LOOKUP_NAME | |
58 | SPL_AC_GET_VMALLOC_INFO | |
59 | SPL_AC_PGDAT_HELPERS | |
60 | SPL_AC_FIRST_ONLINE_PGDAT | |
61 | SPL_AC_NEXT_ONLINE_PGDAT | |
62 | SPL_AC_NEXT_ZONE | |
63 | SPL_AC_PGDAT_LIST | |
86933a6e | 64 | SPL_AC_GLOBAL_PAGE_STATE |
6ae7fef5 BB |
65 | SPL_AC_ZONE_STAT_ITEM_FREE |
66 | SPL_AC_ZONE_STAT_ITEM_INACTIVE | |
67 | SPL_AC_ZONE_STAT_ITEM_ACTIVE | |
68 | SPL_AC_GET_ZONE_COUNTS | |
7119bf70 | 69 | SPL_AC_USER_PATH_DIR |
51a727e9 BB |
70 | SPL_AC_SET_FS_PWD |
71 | SPL_AC_2ARGS_SET_FS_PWD | |
86933a6e BB |
72 | SPL_AC_2ARGS_VFS_UNLINK |
73 | SPL_AC_4ARGS_VFS_RENAME | |
0d0b5237 BB |
74 | SPL_AC_VFS_FSYNC |
75 | SPL_AC_2ARGS_VFS_FSYNC | |
9b2048c2 | 76 | SPL_AC_FS_STRUCT_SPINLOCK |
ec7d53e9 BB |
77 | SPL_AC_CRED_STRUCT |
78 | SPL_AC_GROUPS_SEARCH | |
e811949a | 79 | SPL_AC_PUT_TASK_STRUCT |
3977f837 | 80 | SPL_AC_5ARGS_PROC_HANDLER |
b868e22f | 81 | SPL_AC_KVASPRINTF |
46aa7b39 | 82 | SPL_AC_EXPORTED_RWSEM_IS_LOCKED |
914b0631 | 83 | SPL_AC_KERNEL_INVALIDATE_INODES |
9b0f9079 | 84 | SPL_AC_KERNEL_2ARGS_INVALIDATE_INODES |
e76f4bf1 BB |
85 | SPL_AC_SHRINK_DCACHE_MEMORY |
86 | SPL_AC_SHRINK_ICACHE_MEMORY | |
12ff95ff BB |
87 | SPL_AC_KERN_PATH_PARENT_HEADER |
88 | SPL_AC_KERN_PATH_PARENT_SYMBOL | |
3dfc591a | 89 | SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE |
a55bcaad | 90 | SPL_AC_SHRINK_CONTROL_STRUCT |
588d9004 | 91 | SPL_AC_RWSEM_SPINLOCK_IS_RAW |
36811b44 | 92 | SPL_AC_PMD_ALLOC_WITH_MASK |
86933a6e BB |
93 | ]) |
94 | ||
95 | AC_DEFUN([SPL_AC_MODULE_SYMVERS], [ | |
bb339d06 | 96 | modpost=$LINUX/scripts/Makefile.modpost |
86933a6e | 97 | AC_MSG_CHECKING([kernel file name for module symbols]) |
0408008b | 98 | if test "x$enable_linux_builtin" != xyes -a -f "$modpost"; then |
bb339d06 BB |
99 | if grep -q Modules.symvers $modpost; then |
100 | LINUX_SYMBOLS=Modules.symvers | |
101 | else | |
102 | LINUX_SYMBOLS=Module.symvers | |
103 | fi | |
912fd84d BB |
104 | |
105 | if ! test -f "$LINUX_OBJ/$LINUX_SYMBOLS"; then | |
106 | AC_MSG_ERROR([ | |
107 | *** Please make sure the kernel devel package for your distribution | |
108 | *** is installed. If your building with a custom kernel make sure the | |
109 | *** kernel is configured, built, and the '--with-linux=PATH' configure | |
110 | *** option refers to the location of the kernel source.]) | |
111 | fi | |
86933a6e | 112 | else |
bb339d06 | 113 | LINUX_SYMBOLS=NONE |
86933a6e BB |
114 | fi |
115 | AC_MSG_RESULT($LINUX_SYMBOLS) | |
116 | AC_SUBST(LINUX_SYMBOLS) | |
117 | ]) | |
118 | ||
57d86234 | 119 | AC_DEFUN([SPL_AC_KERNEL], [ |
57d86234 | 120 | AC_ARG_WITH([linux], |
121 | AS_HELP_STRING([--with-linux=PATH], | |
122 | [Path to kernel source]), | |
39a3d2a4 | 123 | [kernelsrc="$withval"]) |
57d86234 | 124 | |
125 | AC_ARG_WITH([linux-obj], | |
126 | AS_HELP_STRING([--with-linux-obj=PATH], | |
127 | [Path to kernel build objects]), | |
128 | [kernelbuild="$withval"]) | |
129 | ||
130 | AC_MSG_CHECKING([kernel source directory]) | |
131 | if test -z "$kernelsrc"; then | |
22ccfaa8 BB |
132 | if test -e "/lib/modules/$(uname -r)/source"; then |
133 | headersdir="/lib/modules/$(uname -r)/source" | |
134 | sourcelink=$(readlink -f "$headersdir") | |
135 | elif test -e "/lib/modules/$(uname -r)/build"; then | |
136 | headersdir="/lib/modules/$(uname -r)/build" | |
534c4e38 BM |
137 | sourcelink=$(readlink -f "$headersdir") |
138 | else | |
139 | sourcelink=$(ls -1d /usr/src/kernels/* \ | |
140 | /usr/src/linux-* \ | |
141 | 2>/dev/null | grep -v obj | tail -1) | |
142 | fi | |
57d86234 | 143 | |
8fd4e3af | 144 | if test -n "$sourcelink" && test -e ${sourcelink}; then |
d4326403 | 145 | kernelsrc=`readlink -f ${sourcelink}` |
d4326403 | 146 | else |
57d86234 | 147 | AC_MSG_RESULT([Not found]) |
148 | AC_MSG_ERROR([ | |
8fd4e3af BB |
149 | *** Please make sure the kernel devel package for your distribution |
150 | *** is installed then try again. If that fails you can specify the | |
151 | *** location of the kernel source with the '--with-linux=PATH' option.]) | |
57d86234 | 152 | fi |
c5f70460 BB |
153 | else |
154 | if test "$kernelsrc" = "NONE"; then | |
155 | kernsrcver=NONE | |
156 | fi | |
57d86234 | 157 | fi |
158 | ||
159 | AC_MSG_RESULT([$kernelsrc]) | |
160 | AC_MSG_CHECKING([kernel build directory]) | |
39a3d2a4 | 161 | if test -z "$kernelbuild"; then |
22ccfaa8 BB |
162 | if test -e "/lib/modules/$(uname -r)/build"; then |
163 | kernelbuild=`readlink -f /lib/modules/$(uname -r)/build` | |
164 | elif test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}; then | |
e2d28a37 BB |
165 | kernelbuild=${kernelsrc}-obj/${target_cpu}/${target_cpu} |
166 | elif test -d ${kernelsrc}-obj/${target_cpu}/default; then | |
167 | kernelbuild=${kernelsrc}-obj/${target_cpu}/default | |
168 | elif test -d `dirname ${kernelsrc}`/build-${target_cpu}; then | |
169 | kernelbuild=`dirname ${kernelsrc}`/build-${target_cpu} | |
39a3d2a4 BB |
170 | else |
171 | kernelbuild=${kernelsrc} | |
172 | fi | |
bf338d8d | 173 | fi |
57d86234 | 174 | AC_MSG_RESULT([$kernelbuild]) |
175 | ||
176 | AC_MSG_CHECKING([kernel source version]) | |
fd921c2e BB |
177 | utsrelease1=$kernelbuild/include/linux/version.h |
178 | utsrelease2=$kernelbuild/include/linux/utsrelease.h | |
179 | utsrelease3=$kernelbuild/include/generated/utsrelease.h | |
180 | if test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1; then | |
181 | utsrelease=linux/version.h | |
182 | elif test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2; then | |
183 | utsrelease=linux/utsrelease.h | |
184 | elif test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3; then | |
185 | utsrelease=generated/utsrelease.h | |
186 | fi | |
57d86234 | 187 | |
fd921c2e BB |
188 | if test "$utsrelease"; then |
189 | kernsrcver=`(echo "#include <$utsrelease>"; | |
57d86234 | 190 | echo "kernsrcver=UTS_RELEASE") | |
d4326403 | 191 | cpp -I $kernelbuild/include | |
57d86234 | 192 | grep "^kernsrcver=" | cut -d \" -f 2` |
57d86234 | 193 | |
fd921c2e BB |
194 | if test -z "$kernsrcver"; then |
195 | AC_MSG_RESULT([Not found]) | |
196 | AC_MSG_ERROR([*** Cannot determine kernel version.]) | |
197 | fi | |
198 | else | |
57d86234 | 199 | AC_MSG_RESULT([Not found]) |
0408008b ED |
200 | if test "x$enable_linux_builtin" != xyes; then |
201 | AC_MSG_ERROR([*** Cannot find UTS_RELEASE definition.]) | |
202 | else | |
203 | AC_MSG_ERROR([ | |
204 | *** Cannot find UTS_RELEASE definition. | |
205 | *** Please run 'make prepare' inside the kernel source tree.]) | |
206 | fi | |
57d86234 | 207 | fi |
208 | ||
209 | AC_MSG_RESULT([$kernsrcver]) | |
210 | ||
57d86234 | 211 | LINUX=${kernelsrc} |
212 | LINUX_OBJ=${kernelbuild} | |
c5f70460 BB |
213 | LINUX_VERSION=${kernsrcver} |
214 | ||
57d86234 | 215 | AC_SUBST(LINUX) |
216 | AC_SUBST(LINUX_OBJ) | |
c5f70460 | 217 | AC_SUBST(LINUX_VERSION) |
57d86234 | 218 | |
86933a6e | 219 | SPL_AC_MODULE_SYMVERS |
2e0e7e69 BB |
220 | ]) |
221 | ||
7731d46b BB |
222 | AC_DEFUN([SPL_AC_KERNEL_CONFIG], [ |
223 | SPL_LINUX_CONFIG([PREEMPT], | |
224 | AC_MSG_ERROR([ | |
225 | *** Kernel built with CONFIG_PREEMPT which is not supported. | |
226 | ** You must rebuild your kernel without this option.]), []) | |
227 | ]) | |
228 | ||
287b2fb1 BB |
229 | dnl # |
230 | dnl # Default SPL user configuration | |
231 | dnl # | |
ad35b6a6 | 232 | AC_DEFUN([SPL_AC_CONFIG_USER], []) |
287b2fb1 BB |
233 | |
234 | dnl # | |
235 | dnl # Check for rpm+rpmbuild to build RPM packages. If these tools | |
236 | dnl # are missing it is non-fatal but you will not be able to build | |
237 | dnl # RPM packages and will be warned if you try too. | |
238 | dnl # | |
239 | AC_DEFUN([SPL_AC_RPM], [ | |
240 | RPM=rpm | |
241 | RPMBUILD=rpmbuild | |
242 | ||
243 | AC_MSG_CHECKING([whether $RPM is available]) | |
244 | AS_IF([tmp=$($RPM --version 2>/dev/null)], [ | |
245 | RPM_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }') | |
246 | HAVE_RPM=yes | |
247 | AC_MSG_RESULT([$HAVE_RPM ($RPM_VERSION)]) | |
248 | ],[ | |
249 | HAVE_RPM=no | |
250 | AC_MSG_RESULT([$HAVE_RPM]) | |
251 | ]) | |
252 | ||
253 | AC_MSG_CHECKING([whether $RPMBUILD is available]) | |
254 | AS_IF([tmp=$($RPMBUILD --version 2>/dev/null)], [ | |
255 | RPMBUILD_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }') | |
256 | HAVE_RPMBUILD=yes | |
257 | AC_MSG_RESULT([$HAVE_RPMBUILD ($RPMBUILD_VERSION)]) | |
258 | ],[ | |
259 | HAVE_RPMBUILD=no | |
260 | AC_MSG_RESULT([$HAVE_RPMBUILD]) | |
261 | ]) | |
262 | ||
263 | AC_SUBST(HAVE_RPM) | |
264 | AC_SUBST(RPM) | |
265 | AC_SUBST(RPM_VERSION) | |
266 | ||
267 | AC_SUBST(HAVE_RPMBUILD) | |
268 | AC_SUBST(RPMBUILD) | |
269 | AC_SUBST(RPMBUILD_VERSION) | |
270 | ]) | |
271 | ||
272 | dnl # | |
273 | dnl # Check for dpkg+dpkg-buildpackage to build DEB packages. If these | |
274 | dnl # tools are missing it is non-fatal but you will not be able to build | |
275 | dnl # DEB packages and will be warned if you try too. | |
276 | dnl # | |
277 | AC_DEFUN([SPL_AC_DPKG], [ | |
278 | DPKG=dpkg | |
279 | DPKGBUILD=dpkg-buildpackage | |
280 | ||
281 | AC_MSG_CHECKING([whether $DPKG is available]) | |
282 | AS_IF([tmp=$($DPKG --version 2>/dev/null)], [ | |
283 | DPKG_VERSION=$(echo $tmp | $AWK '/Debian/ { print $[7] }') | |
284 | HAVE_DPKG=yes | |
285 | AC_MSG_RESULT([$HAVE_DPKG ($DPKG_VERSION)]) | |
286 | ],[ | |
287 | HAVE_DPKG=no | |
288 | AC_MSG_RESULT([$HAVE_DPKG]) | |
289 | ]) | |
290 | ||
291 | AC_MSG_CHECKING([whether $DPKGBUILD is available]) | |
292 | AS_IF([tmp=$($DPKGBUILD --version 2>/dev/null)], [ | |
293 | DPKGBUILD_VERSION=$(echo $tmp | \ | |
294 | $AWK '/Debian/ { print $[4] }' | cut -f-4 -d'.') | |
295 | HAVE_DPKGBUILD=yes | |
296 | AC_MSG_RESULT([$HAVE_DPKGBUILD ($DPKGBUILD_VERSION)]) | |
297 | ],[ | |
298 | HAVE_DPKGBUILD=no | |
299 | AC_MSG_RESULT([$HAVE_DPKGBUILD]) | |
300 | ]) | |
301 | ||
302 | AC_SUBST(HAVE_DPKG) | |
303 | AC_SUBST(DPKG) | |
304 | AC_SUBST(DPKG_VERSION) | |
305 | ||
306 | AC_SUBST(HAVE_DPKGBUILD) | |
307 | AC_SUBST(DPKGBUILD) | |
308 | AC_SUBST(DPKGBUILD_VERSION) | |
309 | ]) | |
310 | ||
c2dceb5c PS |
311 | dnl # |
312 | dnl # Check for pacman+makepkg to build Arch Linux packages. If these | |
313 | dnl # tools are missing it is non-fatal but you will not be able to | |
314 | dnl # build Arch Linux packages and will be warned if you try too. | |
315 | dnl # | |
316 | AC_DEFUN([SPL_AC_PACMAN], [ | |
317 | PACMAN=pacman | |
318 | MAKEPKG=makepkg | |
319 | ||
320 | AC_MSG_CHECKING([whether $PACMAN is available]) | |
321 | tmp=$($PACMAN --version 2>/dev/null) | |
322 | AS_IF([test -n "$tmp"], [ | |
323 | PACMAN_VERSION=$(echo $tmp | | |
324 | $AWK '/Pacman/ { print $[3] }' | | |
325 | $SED 's/^v//') | |
326 | HAVE_PACMAN=yes | |
327 | AC_MSG_RESULT([$HAVE_PACMAN ($PACMAN_VERSION)]) | |
328 | ],[ | |
329 | HAVE_PACMAN=no | |
330 | AC_MSG_RESULT([$HAVE_PACMAN]) | |
331 | ]) | |
332 | ||
333 | AC_MSG_CHECKING([whether $MAKEPKG is available]) | |
334 | tmp=$($MAKEPKG --version 2>/dev/null) | |
335 | AS_IF([test -n "$tmp"], [ | |
336 | MAKEPKG_VERSION=$(echo $tmp | $AWK '/makepkg/ { print $[3] }') | |
337 | HAVE_MAKEPKG=yes | |
338 | AC_MSG_RESULT([$HAVE_MAKEPKG ($MAKEPKG_VERSION)]) | |
339 | ],[ | |
340 | HAVE_MAKEPKG=no | |
341 | AC_MSG_RESULT([$HAVE_MAKEPKG]) | |
342 | ]) | |
343 | ||
344 | AC_SUBST(HAVE_PACMAN) | |
345 | AC_SUBST(PACMAN) | |
346 | AC_SUBST(PACMAN_VERSION) | |
347 | ||
348 | AC_SUBST(HAVE_MAKEPKG) | |
349 | AC_SUBST(MAKEPKG) | |
350 | AC_SUBST(MAKEPKG_VERSION) | |
351 | ]) | |
352 | ||
287b2fb1 BB |
353 | dnl # |
354 | dnl # Until native packaging for various different packing systems | |
355 | dnl # can be added the least we can do is attempt to use alien to | |
356 | dnl # convert the RPM packages to the needed package type. This is | |
357 | dnl # a hack but so far it has worked reasonable well. | |
358 | dnl # | |
359 | AC_DEFUN([SPL_AC_ALIEN], [ | |
360 | ALIEN=alien | |
361 | ||
362 | AC_MSG_CHECKING([whether $ALIEN is available]) | |
363 | AS_IF([tmp=$($ALIEN --version 2>/dev/null)], [ | |
364 | ALIEN_VERSION=$(echo $tmp | $AWK '{ print $[3] }') | |
365 | HAVE_ALIEN=yes | |
366 | AC_MSG_RESULT([$HAVE_ALIEN ($ALIEN_VERSION)]) | |
367 | ],[ | |
368 | HAVE_ALIEN=no | |
369 | AC_MSG_RESULT([$HAVE_ALIEN]) | |
370 | ]) | |
371 | ||
372 | AC_SUBST(HAVE_ALIEN) | |
373 | AC_SUBST(ALIEN) | |
374 | AC_SUBST(ALIEN_VERSION) | |
375 | ]) | |
376 | ||
377 | dnl # | |
378 | dnl # Using the VENDOR tag from config.guess set the default | |
379 | dnl # package type for 'make pkg': (rpm | deb | tgz) | |
380 | dnl # | |
381 | AC_DEFUN([SPL_AC_DEFAULT_PACKAGE], [ | |
73fc084e | 382 | AC_MSG_CHECKING([linux distribution]) |
a3a69b74 BB |
383 | if test -f /etc/toss-release ; then |
384 | VENDOR=toss ; | |
73fc084e BB |
385 | elif test -f /etc/fedora-release ; then |
386 | VENDOR=fedora ; | |
a3a69b74 BB |
387 | elif test -f /etc/redhat-release ; then |
388 | VENDOR=redhat ; | |
389 | elif test -f /etc/gentoo-release ; then | |
390 | VENDOR=gentoo ; | |
cd2817f8 PS |
391 | elif test -f /etc/arch-release ; then |
392 | VENDOR=arch ; | |
73fc084e BB |
393 | elif test -f /etc/SuSE-release ; then |
394 | VENDOR=sles ; | |
395 | elif test -f /etc/slackware-version ; then | |
396 | VENDOR=slackware ; | |
a3a69b74 BB |
397 | elif test -f /etc/lunar.release ; then |
398 | VENDOR=lunar ; | |
399 | elif test -f /etc/lsb-release ; then | |
400 | VENDOR=ubuntu ; | |
401 | elif test -f /etc/debian_version ; then | |
402 | VENDOR=debian ; | |
73fc084e BB |
403 | else |
404 | VENDOR= ; | |
405 | fi | |
406 | AC_MSG_RESULT([$VENDOR]) | |
407 | AC_SUBST(VENDOR) | |
287b2fb1 BB |
408 | |
409 | AC_MSG_CHECKING([default package type]) | |
410 | case "$VENDOR" in | |
a3a69b74 BB |
411 | toss) DEFAULT_PACKAGE=rpm ;; |
412 | redhat) DEFAULT_PACKAGE=rpm ;; | |
413 | fedora) DEFAULT_PACKAGE=rpm ;; | |
414 | gentoo) DEFAULT_PACKAGE=tgz ;; | |
415 | arch) DEFAULT_PACKAGE=arch ;; | |
416 | sles) DEFAULT_PACKAGE=rpm ;; | |
417 | slackware) DEFAULT_PACKAGE=tgz ;; | |
418 | lunar) DEFAULT_PACKAGE=tgz ;; | |
419 | ubuntu) DEFAULT_PACKAGE=deb ;; | |
420 | debian) DEFAULT_PACKAGE=deb ;; | |
421 | *) DEFAULT_PACKAGE=rpm ;; | |
287b2fb1 BB |
422 | esac |
423 | ||
424 | AC_MSG_RESULT([$DEFAULT_PACKAGE]) | |
425 | AC_SUBST(DEFAULT_PACKAGE) | |
426 | ]) | |
427 | ||
428 | dnl # | |
429 | dnl # Default SPL user configuration | |
430 | dnl # | |
431 | AC_DEFUN([SPL_AC_PACKAGE], [ | |
0b14b9f3 | 432 | SPL_AC_DEFAULT_PACKAGE |
287b2fb1 BB |
433 | SPL_AC_RPM |
434 | SPL_AC_DPKG | |
435 | SPL_AC_ALIEN | |
0b14b9f3 BB |
436 | |
437 | AS_IF([test "$VENDOR" = "arch"], [SPL_AC_PACMAN]) | |
287b2fb1 BB |
438 | ]) |
439 | ||
6a1c3d41 | 440 | AC_DEFUN([SPL_AC_LICENSE], [ |
86933a6e BB |
441 | AC_MSG_CHECKING([spl license]) |
442 | LICENSE=GPL | |
443 | AC_MSG_RESULT([$LICENSE]) | |
6a1c3d41 | 444 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DHAVE_GPL_ONLY_SYMBOLS" |
86933a6e BB |
445 | AC_SUBST(LICENSE) |
446 | ]) | |
447 | ||
448 | AC_DEFUN([SPL_AC_CONFIG], [ | |
0408008b ED |
449 | SPL_CONFIG=all |
450 | AC_ARG_WITH([config], | |
451 | AS_HELP_STRING([--with-config=CONFIG], | |
452 | [Config file 'kernel|user|all|srpm']), | |
453 | [SPL_CONFIG="$withval"]) | |
454 | AC_ARG_ENABLE([linux-builtin], | |
455 | [AC_HELP_STRING([--enable-linux-builtin], | |
456 | [Configure for builtin in-tree kernel modules @<:@default=no@:>@])], | |
457 | [], | |
458 | [enable_linux_builtin=no]) | |
459 | ||
460 | AC_MSG_CHECKING([spl config]) | |
461 | AC_MSG_RESULT([$SPL_CONFIG]); | |
462 | AC_SUBST(SPL_CONFIG) | |
463 | ||
464 | case "$SPL_CONFIG" in | |
465 | kernel) SPL_AC_CONFIG_KERNEL ;; | |
466 | user) SPL_AC_CONFIG_USER ;; | |
467 | all) SPL_AC_CONFIG_KERNEL | |
468 | SPL_AC_CONFIG_USER ;; | |
c1541dfe | 469 | srpm) ;; |
0408008b ED |
470 | *) |
471 | AC_MSG_RESULT([Error!]) | |
472 | AC_MSG_ERROR([Bad value "$SPL_CONFIG" for --with-config, | |
473 | user kernel|user|all|srpm]) ;; | |
474 | esac | |
475 | ||
476 | AM_CONDITIONAL([CONFIG_USER], | |
477 | [test "$SPL_CONFIG" = user -o "$SPL_CONFIG" = all]) | |
478 | AM_CONDITIONAL([CONFIG_KERNEL], | |
479 | [test "$SPL_CONFIG" = kernel -o "$SPL_CONFIG" = all] && | |
480 | [test "x$enable_linux_builtin" != xyes ]) | |
6a1c3d41 | 481 | ]) |
482 | ||
055ffd98 BB |
483 | dnl # |
484 | dnl # Enable if the SPL should be compiled with internal debugging enabled. | |
485 | dnl # By default this support is disabled. | |
486 | dnl # | |
57d86234 | 487 | AC_DEFUN([SPL_AC_DEBUG], [ |
c950d148 | 488 | AC_MSG_CHECKING([whether debugging is enabled]) |
055ffd98 BB |
489 | AC_ARG_ENABLE([debug], |
490 | [AS_HELP_STRING([--enable-debug], | |
491 | [Enable generic debug support @<:@default=no@:>@])], | |
492 | [], | |
493 | [enable_debug=no]) | |
494 | ||
495 | AS_IF([test "x$enable_debug" = xyes], | |
c950d148 | 496 | [ |
c950d148 BB |
497 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG -Werror" |
498 | DEBUG_CFLAGS="-DDEBUG -Werror" | |
3c208a54 BB |
499 | DEBUG_SPL="_with_debug" |
500 | ], [ | |
c950d148 BB |
501 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DNDEBUG" |
502 | DEBUG_CFLAGS="-DNDEBUG" | |
3c208a54 | 503 | DEBUG_SPL="_without_debug" |
c950d148 | 504 | ]) |
055ffd98 | 505 | |
c950d148 | 506 | AC_SUBST(DEBUG_CFLAGS) |
3c208a54 | 507 | AC_SUBST(DEBUG_SPL) |
055ffd98 | 508 | AC_MSG_RESULT([$enable_debug]) |
57d86234 | 509 | ]) |
510 | ||
4b2220f0 BB |
511 | dnl # |
512 | dnl # Enabled by default it provides a basic debug log infrastructure. | |
513 | dnl # Each subsystem registers itself with a name and logs messages | |
514 | dnl # using predefined types. If the debug mask it set to allow the | |
515 | dnl # message type it will be written to the internal log. The log | |
516 | dnl # can be dumped to a file by echoing 1 to the 'dump' proc entry, | |
517 | dnl # after dumping the log it must be decoded using the spl utility. | |
518 | dnl # | |
519 | dnl # echo 1 >/proc/sys/kernel/spl/debug/dump | |
520 | dnl # spl /tmp/spl-log.xxx.yyy /tmp/spl-log.xxx.yyy.txt | |
521 | dnl # | |
522 | AC_DEFUN([SPL_AC_DEBUG_LOG], [ | |
523 | AC_ARG_ENABLE([debug-log], | |
524 | [AS_HELP_STRING([--enable-debug-log], | |
525 | [Enable basic debug logging @<:@default=yes@:>@])], | |
526 | [], | |
527 | [enable_debug_log=yes]) | |
528 | ||
529 | AS_IF([test "x$enable_debug_log" = xyes], | |
3c208a54 BB |
530 | [ |
531 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_LOG" | |
532 | DEBUG_LOG="_with_debug_log" | |
533 | AC_DEFINE([DEBUG_LOG], [1], | |
4b2220f0 | 534 | [Define to 1 to enable basic debug logging]) |
3c208a54 BB |
535 | ], [ |
536 | DEBUG_LOG="_without_debug_log" | |
537 | ]) | |
4b2220f0 | 538 | |
3c208a54 | 539 | AC_SUBST(DEBUG_LOG) |
4b2220f0 BB |
540 | AC_MSG_CHECKING([whether basic debug logging is enabled]) |
541 | AC_MSG_RESULT([$enable_debug_log]) | |
542 | ]) | |
543 | ||
055ffd98 BB |
544 | dnl # |
545 | dnl # Enabled by default it provides a minimal level of memory tracking. | |
546 | dnl # A total count of bytes allocated is kept for each alloc and free. | |
547 | dnl # Then at module unload time a report to the console will be printed | |
548 | dnl # if memory was leaked. Additionally, /proc/spl/kmem/slab will exist | |
549 | dnl # and provide an easy way to inspect the kmem based slab. | |
550 | dnl # | |
57d86234 | 551 | AC_DEFUN([SPL_AC_DEBUG_KMEM], [ |
055ffd98 BB |
552 | AC_ARG_ENABLE([debug-kmem], |
553 | [AS_HELP_STRING([--enable-debug-kmem], | |
554 | [Enable basic kmem accounting @<:@default=yes@:>@])], | |
555 | [], | |
556 | [enable_debug_kmem=yes]) | |
57d86234 | 557 | |
055ffd98 | 558 | AS_IF([test "x$enable_debug_kmem" = xyes], |
3c208a54 BB |
559 | [ |
560 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM" | |
561 | DEBUG_KMEM="_with_debug_kmem" | |
562 | AC_DEFINE([DEBUG_KMEM], [1], | |
055ffd98 | 563 | [Define to 1 to enable basic kmem accounting]) |
3c208a54 BB |
564 | ], [ |
565 | DEBUG_KMEM="_without_debug_kmem" | |
566 | ]) | |
055ffd98 | 567 | |
3c208a54 | 568 | AC_SUBST(DEBUG_KMEM) |
055ffd98 BB |
569 | AC_MSG_CHECKING([whether basic kmem accounting is enabled]) |
570 | AC_MSG_RESULT([$enable_debug_kmem]) | |
57d86234 | 571 | ]) |
572 | ||
055ffd98 BB |
573 | dnl # |
574 | dnl # Disabled by default it provides detailed memory tracking. This | |
575 | dnl # feature also requires --enable-debug-kmem to be set. When enabled | |
576 | dnl # not only will total bytes be tracked but also the location of every | |
577 | dnl # alloc and free. When the SPL module is unloaded a list of all leaked | |
578 | dnl # addresses and where they were allocated will be dumped to the console. | |
579 | dnl # Enabling this feature has a significant impact on performance but it | |
580 | dnl # makes finding memory leaks pretty straight forward. | |
581 | dnl # | |
582 | AC_DEFUN([SPL_AC_DEBUG_KMEM_TRACKING], [ | |
583 | AC_ARG_ENABLE([debug-kmem-tracking], | |
584 | [AS_HELP_STRING([--enable-debug-kmem-tracking], | |
585 | [Enable detailed kmem tracking @<:@default=no@:>@])], | |
586 | [], | |
587 | [enable_debug_kmem_tracking=no]) | |
588 | ||
589 | AS_IF([test "x$enable_debug_kmem_tracking" = xyes], | |
3c208a54 BB |
590 | [ |
591 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM_TRACKING" | |
592 | DEBUG_KMEM_TRACKING="_with_debug_kmem_tracking" | |
593 | AC_DEFINE([DEBUG_KMEM_TRACKING], [1], | |
055ffd98 | 594 | [Define to 1 to enable detailed kmem tracking]) |
3c208a54 BB |
595 | ], [ |
596 | DEBUG_KMEM_TRACKING="_without_debug_kmem_tracking" | |
597 | ]) | |
055ffd98 | 598 | |
3c208a54 | 599 | AC_SUBST(DEBUG_KMEM_TRACKING) |
055ffd98 BB |
600 | AC_MSG_CHECKING([whether detailed kmem tracking is enabled]) |
601 | AC_MSG_RESULT([$enable_debug_kmem_tracking]) | |
57d86234 | 602 | ]) |
603 | ||
604 | dnl # | |
605 | dnl # SPL_LINUX_CONFTEST | |
606 | dnl # | |
607 | AC_DEFUN([SPL_LINUX_CONFTEST], [ | |
dbe561d8 | 608 | cat confdefs.h - <<_ACEOF >conftest.c |
57d86234 | 609 | $1 |
610 | _ACEOF | |
611 | ]) | |
612 | ||
613 | dnl # | |
614 | dnl # SPL_LANG_PROGRAM(C)([PROLOGUE], [BODY]) | |
615 | dnl # | |
616 | m4_define([SPL_LANG_PROGRAM], [ | |
617 | $1 | |
618 | int | |
619 | main (void) | |
620 | { | |
621 | dnl Do *not* indent the following line: there may be CPP directives. | |
622 | dnl Don't move the `;' right after for the same reason. | |
623 | $2 | |
624 | ; | |
625 | return 0; | |
626 | } | |
627 | ]) | |
628 | ||
629 | dnl # | |
630 | dnl # SPL_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE | |
631 | dnl # | |
632 | AC_DEFUN([SPL_LINUX_COMPILE_IFELSE], [ | |
c5f70460 BB |
633 | m4_ifvaln([$1], [SPL_LINUX_CONFTEST([$1])]) |
634 | rm -Rf build && mkdir -p build | |
635 | echo "obj-m := conftest.o" >build/Makefile | |
636 | AS_IF( | |
3d0cb2d3 | 637 | [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) >/dev/null && AC_TRY_COMMAND([$3])], |
c5f70460 BB |
638 | [$4], |
639 | [_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])] | |
640 | ) | |
641 | rm -Rf build | |
57d86234 | 642 | ]) |
643 | ||
644 | dnl # | |
645 | dnl # SPL_LINUX_TRY_COMPILE like AC_TRY_COMPILE | |
646 | dnl # | |
647 | AC_DEFUN([SPL_LINUX_TRY_COMPILE], | |
648 | [SPL_LINUX_COMPILE_IFELSE( | |
d50bd9e2 | 649 | [AC_LANG_SOURCE([SPL_LANG_PROGRAM([[$1]], [[$2]])])], |
650 | [modules], | |
651 | [test -s build/conftest.o], | |
652 | [$3], [$4]) | |
57d86234 | 653 | ]) |
654 | ||
655 | dnl # | |
656 | dnl # SPL_LINUX_CONFIG | |
657 | dnl # | |
658 | AC_DEFUN([SPL_LINUX_CONFIG], | |
659 | [AC_MSG_CHECKING([whether Linux was built with CONFIG_$1]) | |
660 | SPL_LINUX_TRY_COMPILE([ | |
c064bdee | 661 | #include <linux/module.h> |
57d86234 | 662 | ],[ |
663 | #ifndef CONFIG_$1 | |
664 | #error CONFIG_$1 not #defined | |
665 | #endif | |
666 | ],[ | |
667 | AC_MSG_RESULT([yes]) | |
668 | $2 | |
669 | ],[ | |
670 | AC_MSG_RESULT([no]) | |
671 | $3 | |
672 | ]) | |
673 | ]) | |
674 | ||
675 | dnl # | |
676 | dnl # SPL_CHECK_SYMBOL_EXPORT | |
677 | dnl # check symbol exported or not | |
678 | dnl # | |
679 | AC_DEFUN([SPL_CHECK_SYMBOL_EXPORT], | |
680 | [AC_MSG_CHECKING([whether symbol $1 is exported]) | |
2e0e7e69 BB |
681 | grep -q -E '[[[:space:]]]$1[[[:space:]]]' \ |
682 | $LINUX_OBJ/Module*.symvers 2>/dev/null | |
57d86234 | 683 | rc=$? |
684 | if test $rc -ne 0; then | |
685 | export=0 | |
686 | for file in $2; do | |
2e0e7e69 BB |
687 | grep -q -E "EXPORT_SYMBOL.*($1)" \ |
688 | "$LINUX_OBJ/$file" 2>/dev/null | |
57d86234 | 689 | rc=$? |
690 | if test $rc -eq 0; then | |
691 | export=1 | |
692 | break; | |
693 | fi | |
694 | done | |
695 | if test $export -eq 0; then | |
696 | AC_MSG_RESULT([no]) | |
697 | $4 | |
698 | else | |
699 | AC_MSG_RESULT([yes]) | |
700 | $3 | |
701 | fi | |
702 | else | |
703 | AC_MSG_RESULT([yes]) | |
704 | $3 | |
705 | fi | |
706 | ]) | |
707 | ||
12ff95ff BB |
708 | dnl # |
709 | dnl # SPL_CHECK_SYMBOL_HEADER | |
710 | dnl # check if a symbol prototype is defined in listed headers. | |
711 | dnl # | |
712 | AC_DEFUN([SPL_CHECK_SYMBOL_HEADER], [ | |
713 | AC_MSG_CHECKING([whether symbol $1 exists in header]) | |
714 | header=0 | |
715 | for file in $3; do | |
716 | grep -q "$2" "$LINUX/$file" 2>/dev/null | |
717 | rc=$? | |
718 | if test $rc -eq 0; then | |
719 | header=1 | |
720 | break; | |
721 | fi | |
722 | done | |
723 | if test $header -eq 0; then | |
724 | AC_MSG_RESULT([no]) | |
725 | $5 | |
726 | else | |
727 | AC_MSG_RESULT([yes]) | |
728 | $4 | |
729 | fi | |
730 | ]) | |
731 | ||
86de8532 | 732 | dnl # |
733 | dnl # SPL_CHECK_HEADER | |
734 | dnl # check whether header exists and define HAVE_$2_HEADER | |
735 | dnl # | |
736 | AC_DEFUN([SPL_CHECK_HEADER], | |
737 | [AC_MSG_CHECKING([whether header $1 exists]) | |
738 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 739 | #include <$1> |
86de8532 | 740 | ],[ |
741 | return 0; | |
742 | ],[ | |
743 | AC_DEFINE(HAVE_$2_HEADER, 1, [$1 exists]) | |
744 | AC_MSG_RESULT(yes) | |
745 | $3 | |
746 | ],[ | |
747 | AC_MSG_RESULT(no) | |
748 | $4 | |
749 | ]) | |
750 | ]) | |
6a6cafbe | 751 | |
0408008b ED |
752 | dnl # |
753 | dnl # Basic toolchain sanity check. | |
754 | dnl # | |
755 | AC_DEFUN([SPL_AC_TEST_MODULE], | |
756 | [AC_MSG_CHECKING([whether modules can be built]) | |
757 | SPL_LINUX_TRY_COMPILE([],[],[ | |
758 | AC_MSG_RESULT([yes]) | |
759 | ],[ | |
760 | AC_MSG_RESULT([no]) | |
761 | if test "x$enable_linux_builtin" != xyes; then | |
762 | AC_MSG_ERROR([*** Unable to build an empty module.]) | |
763 | else | |
764 | AC_MSG_ERROR([ | |
765 | *** Unable to build an empty module. | |
766 | *** Please run 'make scripts' inside the kernel source tree.]) | |
767 | fi | |
768 | ]) | |
769 | ]) | |
770 | ||
57d86234 | 771 | dnl # |
d04c8a56 BB |
772 | dnl # Use the atomic implemenation based on global spinlocks. This |
773 | dnl # should only be needed by 32-bit kernels which do not provide | |
774 | dnl # the atomic64_* API. It may be optionally enabled as a fallback | |
775 | dnl # if problems are observed with the direct mapping to the native | |
776 | dnl # Linux atomic operations. You may not disable atomic spinlocks | |
777 | dnl # if you kernel does not an atomic64_* API. | |
57d86234 | 778 | dnl # |
d04c8a56 BB |
779 | AC_DEFUN([SPL_AC_ATOMIC_SPINLOCK], [ |
780 | AC_ARG_ENABLE([atomic-spinlocks], | |
781 | [AS_HELP_STRING([--enable-atomic-spinlocks], | |
782 | [Atomic types use spinlocks @<:@default=check@:>@])], | |
783 | [], | |
784 | [enable_atomic_spinlocks=check]) | |
57d86234 | 785 | |
a0f6da3d | 786 | SPL_LINUX_TRY_COMPILE([ |
787 | #include <asm/atomic.h> | |
788 | ],[ | |
03318641 | 789 | atomic64_t *ptr __attribute__ ((unused)); |
a0f6da3d | 790 | ],[ |
d04c8a56 | 791 | have_atomic64_t=yes |
a0f6da3d | 792 | AC_DEFINE(HAVE_ATOMIC64_T, 1, |
d04c8a56 | 793 | [kernel defines atomic64_t]) |
a0f6da3d | 794 | ],[ |
d04c8a56 BB |
795 | have_atomic64_t=no |
796 | ]) | |
797 | ||
798 | AS_IF([test "x$enable_atomic_spinlocks" = xcheck], [ | |
799 | AS_IF([test "x$have_atomic64_t" = xyes], [ | |
800 | enable_atomic_spinlocks=no | |
801 | ],[ | |
802 | enable_atomic_spinlocks=yes | |
803 | ]) | |
a0f6da3d | 804 | ]) |
d04c8a56 BB |
805 | |
806 | AS_IF([test "x$enable_atomic_spinlocks" = xyes], [ | |
807 | AC_DEFINE([ATOMIC_SPINLOCK], [1], | |
808 | [Atomic types use spinlocks]) | |
809 | ],[ | |
810 | AS_IF([test "x$have_atomic64_t" = xno], [ | |
811 | AC_MSG_FAILURE( | |
812 | [--disable-atomic-spinlocks given but required atomic64 support is unavailable]) | |
813 | ]) | |
814 | ]) | |
815 | ||
816 | AC_MSG_CHECKING([whether atomic types use spinlocks]) | |
817 | AC_MSG_RESULT([$enable_atomic_spinlocks]) | |
818 | ||
819 | AC_MSG_CHECKING([whether kernel defines atomic64_t]) | |
820 | AC_MSG_RESULT([$have_atomic64_t]) | |
a0f6da3d | 821 | ]) |
822 | ||
302b88e6 BB |
823 | dnl # |
824 | dnl # 2.6.24 API change, | |
825 | dnl # check if atomic64_cmpxchg is defined | |
826 | dnl # | |
827 | AC_DEFUN([SPL_AC_TYPE_ATOMIC64_CMPXCHG], | |
828 | [AC_MSG_CHECKING([whether kernel defines atomic64_cmpxchg]) | |
829 | SPL_LINUX_TRY_COMPILE([ | |
830 | #include <asm/atomic.h> | |
5ec44a37 | 831 | #include <asm/system.h> |
302b88e6 BB |
832 | ],[ |
833 | atomic64_cmpxchg((atomic64_t *)NULL, 0, 0); | |
834 | ],[ | |
835 | AC_MSG_RESULT([yes]) | |
836 | AC_DEFINE(HAVE_ATOMIC64_CMPXCHG, 1, | |
837 | [kernel defines atomic64_cmpxchg]) | |
838 | ],[ | |
839 | AC_MSG_RESULT([no]) | |
840 | ]) | |
841 | ]) | |
842 | ||
843 | dnl # | |
844 | dnl # 2.6.24 API change, | |
845 | dnl # check if atomic64_xchg is defined | |
846 | dnl # | |
847 | AC_DEFUN([SPL_AC_TYPE_ATOMIC64_XCHG], | |
848 | [AC_MSG_CHECKING([whether kernel defines atomic64_xchg]) | |
849 | SPL_LINUX_TRY_COMPILE([ | |
850 | #include <asm/atomic.h> | |
851 | ],[ | |
852 | atomic64_xchg((atomic64_t *)NULL, 0); | |
853 | ],[ | |
854 | AC_MSG_RESULT([yes]) | |
855 | AC_DEFINE(HAVE_ATOMIC64_XCHG, 1, | |
856 | [kernel defines atomic64_xchg]) | |
857 | ],[ | |
858 | AC_MSG_RESULT([no]) | |
859 | ]) | |
860 | ]) | |
861 | ||
d04c8a56 BB |
862 | dnl # |
863 | dnl # 2.6.24 API change, | |
864 | dnl # check if uintptr_t typedef is defined | |
865 | dnl # | |
866 | AC_DEFUN([SPL_AC_TYPE_UINTPTR_T], | |
867 | [AC_MSG_CHECKING([whether kernel defines uintptr_t]) | |
868 | SPL_LINUX_TRY_COMPILE([ | |
869 | #include <linux/types.h> | |
870 | ],[ | |
03318641 | 871 | uintptr_t *ptr __attribute__ ((unused)); |
d04c8a56 BB |
872 | ],[ |
873 | AC_MSG_RESULT([yes]) | |
874 | AC_DEFINE(HAVE_UINTPTR_T, 1, | |
875 | [kernel defines uintptr_t]) | |
876 | ],[ | |
877 | AC_MSG_RESULT([no]) | |
878 | ]) | |
879 | ]) | |
880 | ||
57d86234 | 881 | dnl # |
3d061e9d | 882 | dnl # 2.6.20 API change, |
57d86234 | 883 | dnl # INIT_WORK use 2 args and not store data inside |
884 | dnl # | |
885 | AC_DEFUN([SPL_AC_3ARGS_INIT_WORK], | |
886 | [AC_MSG_CHECKING([whether INIT_WORK wants 3 args]) | |
887 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 888 | #include <linux/workqueue.h> |
57d86234 | 889 | ],[ |
03318641 | 890 | struct work_struct work __attribute__ ((unused)); |
d50bd9e2 | 891 | INIT_WORK(&work, NULL, NULL); |
57d86234 | 892 | ],[ |
d50bd9e2 | 893 | AC_MSG_RESULT(yes) |
894 | AC_DEFINE(HAVE_3ARGS_INIT_WORK, 1, | |
895 | [INIT_WORK wants 3 args]) | |
57d86234 | 896 | ],[ |
d50bd9e2 | 897 | AC_MSG_RESULT(no) |
57d86234 | 898 | ]) |
899 | ]) | |
900 | ||
901 | dnl # | |
3d061e9d | 902 | dnl # 2.6.21 API change, |
57d86234 | 903 | dnl # 'register_sysctl_table' use only one argument instead of two |
904 | dnl # | |
905 | AC_DEFUN([SPL_AC_2ARGS_REGISTER_SYSCTL], | |
906 | [AC_MSG_CHECKING([whether register_sysctl_table() wants 2 args]) | |
907 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 908 | #include <linux/sysctl.h> |
57d86234 | 909 | ],[ |
03318641 | 910 | (void) register_sysctl_table(NULL, 0); |
57d86234 | 911 | ],[ |
d50bd9e2 | 912 | AC_MSG_RESULT(yes) |
913 | AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1, | |
914 | [register_sysctl_table() wants 2 args]) | |
57d86234 | 915 | ],[ |
d50bd9e2 | 916 | AC_MSG_RESULT(no) |
57d86234 | 917 | ]) |
918 | ]) | |
919 | ||
57d86234 | 920 | dnl # |
3d061e9d | 921 | dnl # 2.6.23 API change |
57d86234 | 922 | dnl # Old set_shrinker API replaced with register_shrinker |
923 | dnl # | |
924 | AC_DEFUN([SPL_AC_SET_SHRINKER], [ | |
925 | AC_MSG_CHECKING([whether set_shrinker() available]) | |
926 | SPL_LINUX_TRY_COMPILE([ | |
927 | #include <linux/mm.h> | |
928 | ],[ | |
929 | return set_shrinker(DEFAULT_SEEKS, NULL); | |
930 | ],[ | |
931 | AC_MSG_RESULT([yes]) | |
932 | AC_DEFINE(HAVE_SET_SHRINKER, 1, | |
933 | [set_shrinker() available]) | |
934 | ],[ | |
935 | AC_MSG_RESULT([no]) | |
936 | ]) | |
937 | ]) | |
938 | ||
23aa63cb BB |
939 | dnl # |
940 | dnl # 2.6.35 API change, | |
941 | dnl # Add context to shrinker callback | |
942 | dnl # | |
943 | AC_DEFUN([SPL_AC_3ARGS_SHRINKER_CALLBACK], | |
944 | [AC_MSG_CHECKING([whether shrinker callback wants 3 args]) | |
945 | tmp_flags="$EXTRA_KCFLAGS" | |
946 | EXTRA_KCFLAGS="-Werror" | |
947 | SPL_LINUX_TRY_COMPILE([ | |
948 | #include <linux/mm.h> | |
949 | ||
950 | int shrinker_cb(struct shrinker *, int, unsigned int); | |
951 | ],[ | |
952 | struct shrinker cache_shrinker = { | |
953 | .shrink = shrinker_cb, | |
954 | .seeks = DEFAULT_SEEKS, | |
955 | }; | |
956 | register_shrinker(&cache_shrinker); | |
957 | ],[ | |
958 | AC_MSG_RESULT(yes) | |
959 | AC_DEFINE(HAVE_3ARGS_SHRINKER_CALLBACK, 1, | |
960 | [shrinker callback wants 3 args]) | |
961 | ],[ | |
962 | AC_MSG_RESULT(no) | |
963 | ]) | |
964 | EXTRA_KCFLAGS="$tmp_flags" | |
965 | ]) | |
966 | ||
57d86234 | 967 | dnl # |
3d061e9d | 968 | dnl # 2.6.25 API change, |
57d86234 | 969 | dnl # struct path entry added to struct nameidata |
970 | dnl # | |
971 | AC_DEFUN([SPL_AC_PATH_IN_NAMEIDATA], | |
972 | [AC_MSG_CHECKING([whether struct path used in struct nameidata]) | |
973 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 974 | #include <linux/namei.h> |
57d86234 | 975 | ],[ |
03318641 | 976 | struct nameidata nd __attribute__ ((unused)); |
57d86234 | 977 | |
978 | nd.path.mnt = NULL; | |
979 | nd.path.dentry = NULL; | |
980 | ],[ | |
d50bd9e2 | 981 | AC_MSG_RESULT(yes) |
982 | AC_DEFINE(HAVE_PATH_IN_NAMEIDATA, 1, | |
983 | [struct path used in struct nameidata]) | |
57d86234 | 984 | ],[ |
d50bd9e2 | 985 | AC_MSG_RESULT(no) |
57d86234 | 986 | ]) |
987 | ]) | |
988 | ||
989 | dnl # | |
990 | dnl # Custom SPL patch may export this system it is not required | |
991 | dnl # | |
992 | AC_DEFUN([SPL_AC_TASK_CURR], [ | |
993 | SPL_CHECK_SYMBOL_EXPORT([task_curr], [kernel/sched.c], | |
994 | [AC_DEFINE(HAVE_TASK_CURR, 1, [task_curr() exported])], | |
995 | []) | |
996 | ]) | |
997 | ||
998 | dnl # | |
3d061e9d | 999 | dnl # 2.6.19 API change, |
57d86234 | 1000 | dnl # Use CTL_UNNUMBERED when binary sysctl is not required |
1001 | dnl # | |
1002 | AC_DEFUN([SPL_AC_CTL_UNNUMBERED], | |
1003 | [AC_MSG_CHECKING([whether unnumbered sysctl support exists]) | |
1004 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 1005 | #include <linux/sysctl.h> |
57d86234 | 1006 | ],[ |
1007 | #ifndef CTL_UNNUMBERED | |
1008 | #error CTL_UNNUMBERED undefined | |
1009 | #endif | |
1010 | ],[ | |
d50bd9e2 | 1011 | AC_MSG_RESULT(yes) |
1012 | AC_DEFINE(HAVE_CTL_UNNUMBERED, 1, | |
1013 | [unnumbered sysctl support exists]) | |
57d86234 | 1014 | ],[ |
d50bd9e2 | 1015 | AC_MSG_RESULT(no) |
57d86234 | 1016 | ]) |
1017 | ]) | |
877a32e9 | 1018 | |
79a3bf13 BB |
1019 | dnl # |
1020 | dnl # 2.6.33 API change, | |
1021 | dnl # Removed .ctl_name from struct ctl_table. | |
1022 | dnl # | |
1023 | AC_DEFUN([SPL_AC_CTL_NAME], [ | |
1024 | AC_MSG_CHECKING([whether struct ctl_table has ctl_name]) | |
1025 | SPL_LINUX_TRY_COMPILE([ | |
1026 | #include <linux/sysctl.h> | |
1027 | ],[ | |
03318641 | 1028 | struct ctl_table ctl __attribute__ ((unused)); |
79a3bf13 BB |
1029 | ctl.ctl_name = 0; |
1030 | ],[ | |
1031 | AC_MSG_RESULT(yes) | |
1032 | AC_DEFINE(HAVE_CTL_NAME, 1, [struct ctl_table has ctl_name]) | |
1033 | ],[ | |
1034 | AC_MSG_RESULT(no) | |
1035 | ]) | |
1036 | ]) | |
1037 | ||
877a32e9 | 1038 | dnl # |
1039 | dnl # 2.6.16 API change. | |
1040 | dnl # Check if 'fls64()' is available | |
1041 | dnl # | |
1042 | AC_DEFUN([SPL_AC_FLS64], | |
6a6cafbe | 1043 | [AC_MSG_CHECKING([whether fls64() is available]) |
1044 | SPL_LINUX_TRY_COMPILE([ | |
1045 | #include <linux/bitops.h> | |
1046 | ],[ | |
1047 | return fls64(0); | |
1048 | ],[ | |
1049 | AC_MSG_RESULT(yes) | |
1050 | AC_DEFINE(HAVE_FLS64, 1, [fls64() is available]) | |
1051 | ],[ | |
1052 | AC_MSG_RESULT(no) | |
1053 | ]) | |
877a32e9 | 1054 | ]) |
46c685d0 | 1055 | |
1056 | dnl # | |
1057 | dnl # 2.6.18 API change, check whether device_create() is available. | |
1058 | dnl # Device_create() was introduced in 2.6.18 and depricated | |
1059 | dnl # class_device_create() which was fully removed in 2.6.26. | |
1060 | dnl # | |
1061 | AC_DEFUN([SPL_AC_DEVICE_CREATE], [ | |
1062 | SPL_CHECK_SYMBOL_EXPORT( | |
1063 | [device_create], | |
1064 | [drivers/base/core.c], | |
1065 | [AC_DEFINE(HAVE_DEVICE_CREATE, 1, | |
1066 | [device_create() is available])], | |
6a6cafbe | 1067 | []) |
46c685d0 | 1068 | ]) |
1069 | ||
8123ac4f BB |
1070 | dnl # |
1071 | dnl # 2.6.27 API change, | |
1072 | dnl # device_create() uses 5 args, new 'drvdata' argument. | |
1073 | dnl # | |
1074 | AC_DEFUN([SPL_AC_5ARGS_DEVICE_CREATE], [ | |
1075 | AC_MSG_CHECKING([whether device_create() wants 5 args]) | |
1076 | tmp_flags="$EXTRA_KCFLAGS" | |
1077 | EXTRA_KCFLAGS="-Werror" | |
1078 | SPL_LINUX_TRY_COMPILE([ | |
1079 | #include <linux/device.h> | |
1080 | ],[ | |
1081 | device_create(NULL, NULL, 0, NULL, "%d", 1); | |
1082 | ],[ | |
1083 | AC_MSG_RESULT(yes) | |
1084 | AC_DEFINE(HAVE_5ARGS_DEVICE_CREATE, 1, | |
1085 | [device_create wants 5 args]) | |
1086 | ],[ | |
1087 | AC_MSG_RESULT(no) | |
1088 | ]) | |
1089 | EXTRA_KCFLAGS="$tmp_flags" | |
1090 | ]) | |
1091 | ||
46c685d0 | 1092 | dnl # |
1093 | dnl # 2.6.13 API change, check whether class_device_create() is available. | |
1094 | dnl # Class_device_create() was introduced in 2.6.13 and depricated | |
1095 | dnl # class_simple_device_add() which was fully removed in 2.6.13. | |
1096 | dnl # | |
1097 | AC_DEFUN([SPL_AC_CLASS_DEVICE_CREATE], [ | |
1098 | SPL_CHECK_SYMBOL_EXPORT( | |
1099 | [class_device_create], | |
1100 | [drivers/base/class.c], | |
1101 | [AC_DEFINE(HAVE_CLASS_DEVICE_CREATE, 1, | |
1102 | [class_device_create() is available])], | |
6a6cafbe | 1103 | []) |
46c685d0 | 1104 | ]) |
6a6cafbe | 1105 | |
6a6cafbe | 1106 | dnl # |
1107 | dnl # 2.6.26 API change, set_normalized_timespec() is exported. | |
1108 | dnl # | |
1109 | AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT], [ | |
1110 | SPL_CHECK_SYMBOL_EXPORT( | |
1111 | [set_normalized_timespec], | |
1112 | [kernel/time.c], | |
1113 | [AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT, 1, | |
1114 | [set_normalized_timespec() is available as export])], | |
1115 | []) | |
1116 | ]) | |
1117 | ||
1118 | dnl # | |
1119 | dnl # 2.6.16 API change, set_normalize_timespec() moved to time.c | |
1120 | dnl # previously it was available in time.h as an inline. | |
1121 | dnl # | |
86de8532 | 1122 | AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE], [ |
1123 | AC_MSG_CHECKING([whether set_normalized_timespec() is an inline]) | |
6a6cafbe | 1124 | SPL_LINUX_TRY_COMPILE([ |
1125 | #include <linux/time.h> | |
6a6cafbe | 1126 | void set_normalized_timespec(struct timespec *ts, |
25557fd8 | 1127 | time_t sec, long nsec) { } |
1128 | ], | |
1129 | [], | |
1130 | [ | |
6a6cafbe | 1131 | AC_MSG_RESULT(no) |
1132 | ],[ | |
1133 | AC_MSG_RESULT(yes) | |
1134 | AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_INLINE, 1, | |
1135 | [set_normalized_timespec() is available as inline]) | |
1136 | ]) | |
1137 | ]) | |
1138 | ||
1139 | dnl # | |
1140 | dnl # 2.6.18 API change, | |
1141 | dnl # timespec_sub() inline function available in linux/time.h | |
1142 | dnl # | |
86de8532 | 1143 | AC_DEFUN([SPL_AC_TIMESPEC_SUB], [ |
1144 | AC_MSG_CHECKING([whether timespec_sub() is available]) | |
6a6cafbe | 1145 | SPL_LINUX_TRY_COMPILE([ |
1146 | #include <linux/time.h> | |
1147 | ],[ | |
03318641 BB |
1148 | struct timespec a = { 0 }; |
1149 | struct timespec b = { 0 }; | |
1150 | struct timespec c __attribute__ ((unused)); | |
6a6cafbe | 1151 | c = timespec_sub(a, b); |
1152 | ],[ | |
1153 | AC_MSG_RESULT(yes) | |
1154 | AC_DEFINE(HAVE_TIMESPEC_SUB, 1, [timespec_sub() is available]) | |
1155 | ],[ | |
1156 | AC_MSG_RESULT(no) | |
1157 | ]) | |
1158 | ]) | |
1159 | ||
86de8532 | 1160 | dnl # |
3d061e9d | 1161 | dnl # 2.6.19 API change, |
1162 | dnl # check if init_utsname() is available in linux/utsname.h | |
1163 | dnl # | |
1164 | AC_DEFUN([SPL_AC_INIT_UTSNAME], [ | |
1165 | AC_MSG_CHECKING([whether init_utsname() is available]) | |
1166 | SPL_LINUX_TRY_COMPILE([ | |
1167 | #include <linux/utsname.h> | |
1168 | ],[ | |
03318641 BB |
1169 | struct new_utsname *a __attribute__ ((unused)); |
1170 | a = init_utsname(); | |
3d061e9d | 1171 | ],[ |
1172 | AC_MSG_RESULT(yes) | |
1173 | AC_DEFINE(HAVE_INIT_UTSNAME, 1, [init_utsname() is available]) | |
1174 | ],[ | |
1175 | AC_MSG_RESULT(no) | |
1176 | ]) | |
1177 | ]) | |
1178 | ||
1179 | dnl # | |
1180 | dnl # 2.6.26 API change, | |
1181 | dnl # definition of struct fdtable relocated to linux/fdtable.h | |
86de8532 | 1182 | dnl # |
1183 | AC_DEFUN([SPL_AC_FDTABLE_HEADER], [ | |
1184 | SPL_CHECK_HEADER([linux/fdtable.h], [FDTABLE], [], []) | |
1185 | ]) | |
322640b7 | 1186 | |
1187 | dnl # | |
3d061e9d | 1188 | dnl # 2.6.14 API change, |
1189 | dnl # check whether 'files_fdtable()' exists | |
1190 | dnl # | |
1191 | AC_DEFUN([SPL_AC_FILES_FDTABLE], [ | |
1192 | AC_MSG_CHECKING([whether files_fdtable() is available]) | |
1193 | SPL_LINUX_TRY_COMPILE([ | |
1194 | #include <linux/sched.h> | |
1195 | #include <linux/file.h> | |
1196 | #ifdef HAVE_FDTABLE_HEADER | |
1197 | #include <linux/fdtable.h> | |
1198 | #endif | |
1199 | ],[ | |
1200 | struct files_struct *files = current->files; | |
03318641 BB |
1201 | struct fdtable *fdt __attribute__ ((unused)); |
1202 | fdt = files_fdtable(files); | |
3d061e9d | 1203 | ],[ |
1204 | AC_MSG_RESULT(yes) | |
1205 | AC_DEFINE(HAVE_FILES_FDTABLE, 1, [files_fdtable() is available]) | |
1206 | ],[ | |
1207 | AC_MSG_RESULT(no) | |
1208 | ]) | |
1209 | ]) | |
1210 | ||
e0093fea RY |
1211 | dnl # |
1212 | dnl # 3.4.0 API change, | |
1213 | dnl # check whether '__clear_close_on_exec()' exists | |
1214 | dnl # | |
1215 | AC_DEFUN([SPL_AC_CLEAR_CLOSE_ON_EXEC], [ | |
1216 | AC_MSG_CHECKING([whether __clear_close_on_exec() is available]) | |
1217 | SPL_LINUX_TRY_COMPILE([ | |
1218 | #include <linux/fdtable.h> | |
1219 | ],[ | |
1220 | struct fdtable *fdt = NULL; | |
1221 | int fd = 0; | |
1222 | ||
1223 | __clear_close_on_exec(fd, fdt); | |
1224 | ],[ | |
1225 | AC_MSG_RESULT(yes) | |
1226 | AC_DEFINE(HAVE_CLEAR_CLOSE_ON_EXEC, 1, | |
1227 | [__clear_close_on_exec() is available]) | |
1228 | ],[ | |
1229 | AC_MSG_RESULT(no) | |
1230 | ]) | |
1231 | ]) | |
1232 | ||
3d061e9d | 1233 | dnl # |
1234 | dnl # 2.6.18 API change, | |
1235 | dnl # added linux/uaccess.h | |
322640b7 | 1236 | dnl # |
1237 | AC_DEFUN([SPL_AC_UACCESS_HEADER], [ | |
1238 | SPL_CHECK_HEADER([linux/uaccess.h], [UACCESS], [], []) | |
1239 | ]) | |
3d061e9d | 1240 | |
1241 | dnl # | |
1242 | dnl # 2.6.12 API change, | |
1243 | dnl # check whether 'kmalloc_node()' is available. | |
1244 | dnl # | |
1245 | AC_DEFUN([SPL_AC_KMALLOC_NODE], [ | |
1246 | AC_MSG_CHECKING([whether kmalloc_node() is available]) | |
1247 | SPL_LINUX_TRY_COMPILE([ | |
1248 | #include <linux/slab.h> | |
1249 | ],[ | |
03318641 BB |
1250 | void *a __attribute__ ((unused)); |
1251 | a = kmalloc_node(1, GFP_KERNEL, 0); | |
3d061e9d | 1252 | ],[ |
1253 | AC_MSG_RESULT(yes) | |
1254 | AC_DEFINE(HAVE_KMALLOC_NODE, 1, [kmalloc_node() is available]) | |
1255 | ],[ | |
1256 | AC_MSG_RESULT(no) | |
1257 | ]) | |
1258 | ]) | |
1259 | ||
1260 | dnl # | |
1261 | dnl # 2.6.9 API change, | |
1262 | dnl # check whether 'monotonic_clock()' is available it may | |
1263 | dnl # be available for some archs but not others. | |
1264 | dnl # | |
1265 | AC_DEFUN([SPL_AC_MONOTONIC_CLOCK], [ | |
1266 | SPL_CHECK_SYMBOL_EXPORT( | |
1267 | [monotonic_clock], | |
1268 | [], | |
1269 | [AC_DEFINE(HAVE_MONOTONIC_CLOCK, 1, | |
1270 | [monotonic_clock() is available])], | |
1271 | []) | |
1272 | ]) | |
1273 | ||
1274 | dnl # | |
1275 | dnl # 2.6.16 API change, | |
1276 | dnl # check whether 'struct inode' has i_mutex | |
1277 | dnl # | |
1278 | AC_DEFUN([SPL_AC_INODE_I_MUTEX], [ | |
1279 | AC_MSG_CHECKING([whether struct inode has i_mutex]) | |
1280 | SPL_LINUX_TRY_COMPILE([ | |
1281 | #include <linux/fs.h> | |
1282 | #include <linux/mutex.h> | |
1283 | ],[ | |
1284 | struct inode i; | |
1285 | mutex_init(&i.i_mutex); | |
1286 | ],[ | |
1287 | AC_MSG_RESULT(yes) | |
1288 | AC_DEFINE(HAVE_INODE_I_MUTEX, 1, [struct inode has i_mutex]) | |
1289 | ],[ | |
1290 | AC_MSG_RESULT(no) | |
1291 | ]) | |
1292 | ]) | |
b61a6e8b | 1293 | |
4d54fdee BB |
1294 | dnl # |
1295 | dnl # 2.6.29 API change, | |
1296 | dnl # Adaptive mutexs introduced. | |
1297 | dnl # | |
1298 | AC_DEFUN([SPL_AC_MUTEX_OWNER], [ | |
1299 | AC_MSG_CHECKING([whether struct mutex has owner]) | |
1300 | SPL_LINUX_TRY_COMPILE([ | |
1301 | #include <linux/mutex.h> | |
1302 | ],[ | |
03318641 | 1303 | struct mutex mtx __attribute__ ((unused)); |
4d54fdee BB |
1304 | mtx.owner = NULL; |
1305 | ],[ | |
1306 | AC_MSG_RESULT(yes) | |
1307 | AC_DEFINE(HAVE_MUTEX_OWNER, 1, [struct mutex has owner]) | |
1308 | ],[ | |
1309 | AC_MSG_RESULT(no) | |
1310 | ]) | |
1311 | ]) | |
1312 | ||
86fd39f3 BB |
1313 | dnl # |
1314 | dnl # 2.6.39 API change, | |
1315 | dnl # Owner type change. A Linux mutex prior to 2.6.39 would store | |
1316 | dnl # the owner as a thread_info pointer when CONFIG_DEBUG_MUTEXES | |
1317 | dnl # was defined. As of 2.6.39 this was changed to a task_struct | |
1318 | dnl # pointer which frankly makes a lot more sense. | |
1319 | dnl # | |
1320 | AC_DEFUN([SPL_AC_MUTEX_OWNER_TASK_STRUCT], [ | |
1321 | AC_MSG_CHECKING([whether struct mutex owner is a task_struct]) | |
1322 | tmp_flags="$EXTRA_KCFLAGS" | |
1323 | EXTRA_KCFLAGS="-Werror" | |
1324 | SPL_LINUX_TRY_COMPILE([ | |
1325 | #include <linux/mutex.h> | |
1326 | ],[ | |
1327 | struct mutex mtx __attribute__ ((unused)); | |
1328 | mtx.owner = current; | |
1329 | ],[ | |
1330 | AC_MSG_RESULT(yes) | |
1331 | AC_DEFINE(HAVE_MUTEX_OWNER_TASK_STRUCT, 1, | |
1332 | [struct mutex owner is a task_struct]) | |
1333 | ],[ | |
1334 | AC_MSG_RESULT(no) | |
1335 | ]) | |
1336 | EXTRA_KCFLAGS="$tmp_flags" | |
1337 | ]) | |
1338 | ||
6c9433c1 BB |
1339 | dnl # |
1340 | dnl # 2.6.18 API change, | |
1341 | dnl # First introduced 'mutex_lock_nested()' in include/linux/mutex.h, | |
1342 | dnl # as part of the mutex validator. Fallback to using 'mutex_lock()' | |
1343 | dnl # if the mutex validator is disabled or otherwise unavailable. | |
1344 | dnl # | |
1345 | AC_DEFUN([SPL_AC_MUTEX_LOCK_NESTED], [ | |
1346 | AC_MSG_CHECKING([whether mutex_lock_nested() is available]) | |
1347 | SPL_LINUX_TRY_COMPILE([ | |
1348 | #include <linux/mutex.h> | |
1349 | ],[ | |
1350 | struct mutex mutex; | |
1351 | mutex_init(&mutex); | |
1352 | mutex_lock_nested(&mutex, 0); | |
1353 | ],[ | |
1354 | AC_MSG_RESULT(yes) | |
1355 | AC_DEFINE(HAVE_MUTEX_LOCK_NESTED, 1, | |
1356 | [mutex_lock_nested() is available]) | |
1357 | ],[ | |
1358 | AC_MSG_RESULT(no) | |
1359 | ]) | |
1360 | ]) | |
1361 | ||
31a033ec BB |
1362 | dnl # |
1363 | dnl # 2.6.27 API change, | |
1364 | dnl # on_each_cpu() uses 3 args, no 'retry' argument | |
1365 | dnl # | |
1366 | AC_DEFUN([SPL_AC_3ARGS_ON_EACH_CPU], [ | |
1367 | AC_MSG_CHECKING([whether on_each_cpu() wants 3 args]) | |
1368 | SPL_LINUX_TRY_COMPILE([ | |
1369 | #include <linux/smp.h> | |
1370 | ],[ | |
1371 | on_each_cpu(NULL, NULL, 0); | |
1372 | ],[ | |
1373 | AC_MSG_RESULT(yes) | |
1374 | AC_DEFINE(HAVE_3ARGS_ON_EACH_CPU, 1, | |
1375 | [on_each_cpu wants 3 args]) | |
1376 | ],[ | |
1377 | AC_MSG_RESULT(no) | |
1378 | ]) | |
1379 | ]) | |
36b313da BB |
1380 | |
1381 | dnl # | |
d1ff2312 BB |
1382 | dnl # 2.6.18 API change, |
1383 | dnl # kallsyms_lookup_name no longer exported | |
1384 | dnl # | |
1385 | AC_DEFUN([SPL_AC_KALLSYMS_LOOKUP_NAME], [ | |
1386 | SPL_CHECK_SYMBOL_EXPORT( | |
1387 | [kallsyms_lookup_name], | |
1388 | [], | |
1389 | [AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1, | |
1390 | [kallsyms_lookup_name() is available])], | |
1391 | []) | |
1392 | ]) | |
1393 | ||
1394 | dnl # | |
e11d6c5f BB |
1395 | dnl # Proposed API change, |
1396 | dnl # This symbol is not available in stock kernels. You may build a | |
1397 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1398 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1399 | dnl # your environment this is recommended. | |
d1ff2312 BB |
1400 | dnl # |
1401 | AC_DEFUN([SPL_AC_GET_VMALLOC_INFO], [ | |
1402 | SPL_CHECK_SYMBOL_EXPORT( | |
1403 | [get_vmalloc_info], | |
1404 | [], | |
1405 | [AC_DEFINE(HAVE_GET_VMALLOC_INFO, 1, | |
1406 | [get_vmalloc_info() is available])], | |
1407 | []) | |
1408 | ]) | |
1409 | ||
5232d256 BB |
1410 | dnl # |
1411 | dnl # 2.6.17 API change | |
1412 | dnl # The helper functions first_online_pgdat(), next_online_pgdat(), and | |
1413 | dnl # next_zone() are introduced to simplify for_each_zone(). These symbols | |
1414 | dnl # were exported in 2.6.17 for use by modules which was consistent with | |
1415 | dnl # the previous implementation of for_each_zone(). From 2.6.18 - 2.6.19 | |
1416 | dnl # the symbols were exported as 'unused', and by 2.6.20 they exports | |
1417 | dnl # were dropped entirely leaving modules no way to directly iterate over | |
1418 | dnl # the zone list. Because we need access to the zone helpers we check | |
1419 | dnl # if the kernel contains the old or new implementation. Then we check | |
1420 | dnl # to see if the symbols we need for each version are available. If they | |
1421 | dnl # are not, dynamically aquire the addresses with kallsyms_lookup_name(). | |
1422 | dnl # | |
1423 | AC_DEFUN([SPL_AC_PGDAT_HELPERS], [ | |
1424 | AC_MSG_CHECKING([whether symbol *_pgdat exist]) | |
1425 | grep -q -E 'first_online_pgdat' $LINUX/include/linux/mmzone.h 2>/dev/null | |
1426 | rc=$? | |
1427 | if test $rc -eq 0; then | |
1428 | AC_MSG_RESULT([yes]) | |
1429 | AC_DEFINE(HAVE_PGDAT_HELPERS, 1, [pgdat helpers are available]) | |
1430 | else | |
1431 | AC_MSG_RESULT([no]) | |
1432 | fi | |
1433 | ]) | |
1434 | ||
d1ff2312 | 1435 | dnl # |
e11d6c5f BB |
1436 | dnl # Proposed API change, |
1437 | dnl # This symbol is not available in stock kernels. You may build a | |
1438 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1439 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1440 | dnl # your environment this is recommended. | |
36b313da BB |
1441 | dnl # |
1442 | AC_DEFUN([SPL_AC_FIRST_ONLINE_PGDAT], [ | |
1443 | SPL_CHECK_SYMBOL_EXPORT( | |
1444 | [first_online_pgdat], | |
1445 | [], | |
1446 | [AC_DEFINE(HAVE_FIRST_ONLINE_PGDAT, 1, | |
1447 | [first_online_pgdat() is available])], | |
1448 | []) | |
1449 | ]) | |
1450 | ||
1451 | dnl # | |
e11d6c5f BB |
1452 | dnl # Proposed API change, |
1453 | dnl # This symbol is not available in stock kernels. You may build a | |
1454 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1455 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1456 | dnl # your environment this is recommended. | |
36b313da BB |
1457 | dnl # |
1458 | AC_DEFUN([SPL_AC_NEXT_ONLINE_PGDAT], [ | |
1459 | SPL_CHECK_SYMBOL_EXPORT( | |
1460 | [next_online_pgdat], | |
1461 | [], | |
1462 | [AC_DEFINE(HAVE_NEXT_ONLINE_PGDAT, 1, | |
1463 | [next_online_pgdat() is available])], | |
1464 | []) | |
1465 | ]) | |
1466 | ||
1467 | dnl # | |
e11d6c5f BB |
1468 | dnl # Proposed API change, |
1469 | dnl # This symbol is not available in stock kernels. You may build a | |
1470 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1471 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1472 | dnl # your environment this is recommended. | |
36b313da BB |
1473 | dnl # |
1474 | AC_DEFUN([SPL_AC_NEXT_ZONE], [ | |
1475 | SPL_CHECK_SYMBOL_EXPORT( | |
1476 | [next_zone], | |
1477 | [], | |
1478 | [AC_DEFINE(HAVE_NEXT_ZONE, 1, | |
1479 | [next_zone() is available])], | |
1480 | []) | |
1481 | ]) | |
4ab13d3b | 1482 | |
5232d256 BB |
1483 | dnl # |
1484 | dnl # 2.6.17 API change, | |
1485 | dnl # See SPL_AC_PGDAT_HELPERS for details. | |
1486 | dnl # | |
1487 | AC_DEFUN([SPL_AC_PGDAT_LIST], [ | |
1488 | SPL_CHECK_SYMBOL_EXPORT( | |
1489 | [pgdat_list], | |
1490 | [], | |
1491 | [AC_DEFINE(HAVE_PGDAT_LIST, 1, | |
1492 | [pgdat_list is available])], | |
1493 | []) | |
1494 | ]) | |
1495 | ||
96dded38 BB |
1496 | dnl # |
1497 | dnl # 2.6.18 API change, | |
1498 | dnl # First introduced global_page_state() support as an inline. | |
1499 | dnl # | |
1500 | AC_DEFUN([SPL_AC_GLOBAL_PAGE_STATE], [ | |
1501 | AC_MSG_CHECKING([whether global_page_state() is available]) | |
1502 | SPL_LINUX_TRY_COMPILE([ | |
6ae7fef5 | 1503 | #include <linux/mm.h> |
96dded38 | 1504 | ],[ |
03318641 | 1505 | unsigned long state __attribute__ ((unused)); |
6ae7fef5 | 1506 | state = global_page_state(0); |
96dded38 BB |
1507 | ],[ |
1508 | AC_MSG_RESULT(yes) | |
1509 | AC_DEFINE(HAVE_GLOBAL_PAGE_STATE, 1, | |
1510 | [global_page_state() is available]) | |
1511 | ],[ | |
1512 | AC_MSG_RESULT(no) | |
1513 | ]) | |
1514 | ]) | |
1515 | ||
e11d6c5f | 1516 | dnl # |
6ae7fef5 BB |
1517 | dnl # 2.6.21 API change (plus subsequent naming convention changes), |
1518 | dnl # Public global zone stats now include a free page count. However | |
1519 | dnl # the enumerated names of the counters have changed since this API | |
1520 | dnl # was introduced. We need to deduce the corrent name to use. This | |
1521 | dnl # replaces the priviate get_zone_counts() interface. | |
1522 | dnl # | |
1523 | dnl # NR_FREE_PAGES was available from 2.6.21 to current kernels, which | |
1524 | dnl # is 2.6.30 as of when this was written. | |
e11d6c5f | 1525 | dnl # |
6ae7fef5 BB |
1526 | AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_FREE], [ |
1527 | AC_MSG_CHECKING([whether page state NR_FREE_PAGES is available]) | |
e11d6c5f | 1528 | SPL_LINUX_TRY_COMPILE([ |
6ae7fef5 | 1529 | #include <linux/mm.h> |
e11d6c5f | 1530 | ],[ |
03318641 | 1531 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 | 1532 | zsi = NR_FREE_PAGES; |
e11d6c5f BB |
1533 | ],[ |
1534 | AC_MSG_RESULT(yes) | |
6ae7fef5 BB |
1535 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES, 1, |
1536 | [Page state NR_FREE_PAGES is available]) | |
e11d6c5f BB |
1537 | ],[ |
1538 | AC_MSG_RESULT(no) | |
1539 | ]) | |
1540 | ]) | |
a093c6a4 | 1541 | |
6ae7fef5 BB |
1542 | dnl # |
1543 | dnl # 2.6.21 API change (plus subsequent naming convention changes), | |
1544 | dnl # Public global zone stats now include an inactive page count. However | |
1545 | dnl # the enumerated names of the counters have changed since this API | |
1546 | dnl # was introduced. We need to deduce the corrent name to use. This | |
1547 | dnl # replaces the priviate get_zone_counts() interface. | |
1548 | dnl # | |
1549 | dnl # NR_INACTIVE was available from 2.6.21 to 2.6.27 and included both | |
1550 | dnl # anonymous and file inactive pages. As of 2.6.28 it was split in | |
1551 | dnl # to NR_INACTIVE_ANON and NR_INACTIVE_FILE. | |
1552 | dnl # | |
1553 | AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_INACTIVE], [ | |
1554 | AC_MSG_CHECKING([whether page state NR_INACTIVE is available]) | |
1555 | SPL_LINUX_TRY_COMPILE([ | |
1556 | #include <linux/mm.h> | |
1557 | ],[ | |
03318641 | 1558 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 BB |
1559 | zsi = NR_INACTIVE; |
1560 | ],[ | |
1561 | AC_MSG_RESULT(yes) | |
1562 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE, 1, | |
1563 | [Page state NR_INACTIVE is available]) | |
1564 | ],[ | |
1565 | AC_MSG_RESULT(no) | |
1566 | ]) | |
1567 | ||
1568 | AC_MSG_CHECKING([whether page state NR_INACTIVE_ANON is available]) | |
1569 | SPL_LINUX_TRY_COMPILE([ | |
1570 | #include <linux/mm.h> | |
1571 | ],[ | |
03318641 | 1572 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 BB |
1573 | zsi = NR_INACTIVE_ANON; |
1574 | ],[ | |
1575 | AC_MSG_RESULT(yes) | |
1576 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON, 1, | |
1577 | [Page state NR_INACTIVE_ANON is available]) | |
1578 | ],[ | |
1579 | AC_MSG_RESULT(no) | |
1580 | ]) | |
1581 | ||
1582 | AC_MSG_CHECKING([whether page state NR_INACTIVE_FILE is available]) | |
1583 | SPL_LINUX_TRY_COMPILE([ | |
1584 | #include <linux/mm.h> | |
1585 | ],[ | |
03318641 | 1586 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 BB |
1587 | zsi = NR_INACTIVE_FILE; |
1588 | ],[ | |
1589 | AC_MSG_RESULT(yes) | |
1590 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE, 1, | |
1591 | [Page state NR_INACTIVE_FILE is available]) | |
1592 | ],[ | |
1593 | AC_MSG_RESULT(no) | |
1594 | ]) | |
1595 | ]) | |
1596 | ||
1597 | dnl # | |
1598 | dnl # 2.6.21 API change (plus subsequent naming convention changes), | |
1599 | dnl # Public global zone stats now include an active page count. However | |
1600 | dnl # the enumerated names of the counters have changed since this API | |
1601 | dnl # was introduced. We need to deduce the corrent name to use. This | |
1602 | dnl # replaces the priviate get_zone_counts() interface. | |
1603 | dnl # | |
1604 | dnl # NR_ACTIVE was available from 2.6.21 to 2.6.27 and included both | |
1605 | dnl # anonymous and file active pages. As of 2.6.28 it was split in | |
1606 | dnl # to NR_ACTIVE_ANON and NR_ACTIVE_FILE. | |
1607 | dnl # | |
1608 | AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_ACTIVE], [ | |
1609 | AC_MSG_CHECKING([whether page state NR_ACTIVE is available]) | |
1610 | SPL_LINUX_TRY_COMPILE([ | |
1611 | #include <linux/mm.h> | |
1612 | ],[ | |
03318641 | 1613 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 BB |
1614 | zsi = NR_ACTIVE; |
1615 | ],[ | |
1616 | AC_MSG_RESULT(yes) | |
1617 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE, 1, | |
1618 | [Page state NR_ACTIVE is available]) | |
1619 | ],[ | |
1620 | AC_MSG_RESULT(no) | |
1621 | ]) | |
1622 | ||
1623 | AC_MSG_CHECKING([whether page state NR_ACTIVE_ANON is available]) | |
1624 | SPL_LINUX_TRY_COMPILE([ | |
1625 | #include <linux/mm.h> | |
1626 | ],[ | |
03318641 | 1627 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 BB |
1628 | zsi = NR_ACTIVE_ANON; |
1629 | ],[ | |
1630 | AC_MSG_RESULT(yes) | |
1631 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON, 1, | |
1632 | [Page state NR_ACTIVE_ANON is available]) | |
1633 | ],[ | |
1634 | AC_MSG_RESULT(no) | |
1635 | ]) | |
1636 | ||
1637 | AC_MSG_CHECKING([whether page state NR_ACTIVE_FILE is available]) | |
1638 | SPL_LINUX_TRY_COMPILE([ | |
1639 | #include <linux/mm.h> | |
1640 | ],[ | |
03318641 | 1641 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 BB |
1642 | zsi = NR_ACTIVE_FILE; |
1643 | ],[ | |
1644 | AC_MSG_RESULT(yes) | |
1645 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE, 1, | |
1646 | [Page state NR_ACTIVE_FILE is available]) | |
1647 | ],[ | |
1648 | AC_MSG_RESULT(no) | |
1649 | ]) | |
1650 | ]) | |
1651 | ||
1652 | dnl # | |
1653 | dnl # Proposed API change for legacy kernels. | |
1654 | dnl # This symbol is not available in older kernels. For kernels post | |
1655 | dnl # 2.6.21 the global_page_state() API is used to get free/inactive/active | |
1656 | dnl # page state information. This symbol is only used in legacy kernels | |
1657 | dnl # any only as a last resort. | |
1658 | dnl | |
1659 | AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [ | |
1660 | AC_MSG_CHECKING([whether symbol get_zone_counts is needed]) | |
1661 | SPL_LINUX_TRY_COMPILE([ | |
1662 | ],[ | |
1663 | #if !defined(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES) | |
1664 | #error "global_page_state needs NR_FREE_PAGES" | |
1665 | #endif | |
1666 | ||
1667 | #if !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE) && \ | |
1668 | !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON) && \ | |
1669 | !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE) | |
1670 | #error "global_page_state needs NR_ACTIVE*" | |
1671 | #endif | |
1672 | ||
1673 | #if !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE) && \ | |
1674 | !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON) && \ | |
1675 | !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE) | |
1676 | #error "global_page_state needs NR_INACTIVE*" | |
1677 | #endif | |
1678 | ],[ | |
1679 | AC_MSG_RESULT(no) | |
1680 | ],[ | |
1681 | AC_MSG_RESULT(yes) | |
1682 | AC_DEFINE(NEED_GET_ZONE_COUNTS, 1, | |
1683 | [get_zone_counts() is needed]) | |
1684 | ||
1685 | SPL_CHECK_SYMBOL_EXPORT( | |
1686 | [get_zone_counts], | |
1687 | [], | |
1688 | [AC_DEFINE(HAVE_GET_ZONE_COUNTS, 1, | |
1689 | [get_zone_counts() is available])], | |
1690 | []) | |
1691 | ]) | |
1692 | ]) | |
1693 | ||
7119bf70 BB |
1694 | dnl # |
1695 | dnl # 2.6.27 API change, | |
1696 | dnl # The user_path_dir() replaces __user_walk() | |
1697 | dnl # | |
1698 | AC_DEFUN([SPL_AC_USER_PATH_DIR], [ | |
1699 | SPL_CHECK_SYMBOL_EXPORT( | |
1700 | [user_path_at], | |
1701 | [], | |
1702 | [AC_DEFINE(HAVE_USER_PATH_DIR, 1, | |
1703 | [user_path_dir() is available])], | |
1704 | []) | |
1705 | ]) | |
1706 | ||
51a727e9 BB |
1707 | dnl # |
1708 | dnl # Symbol available in RHEL kernels not in stock kernels. | |
1709 | dnl # | |
1710 | AC_DEFUN([SPL_AC_SET_FS_PWD], [ | |
1711 | SPL_CHECK_SYMBOL_EXPORT( | |
1712 | [set_fs_pwd], | |
1713 | [], | |
1714 | [AC_DEFINE(HAVE_SET_FS_PWD, 1, | |
1715 | [set_fs_pwd() is available])], | |
1716 | []) | |
1717 | ]) | |
1718 | ||
1719 | dnl # | |
1720 | dnl # 2.6.25 API change, | |
1721 | dnl # Simplied API by replacing mnt+dentry args with a single path arg. | |
1722 | dnl # | |
1723 | AC_DEFUN([SPL_AC_2ARGS_SET_FS_PWD], | |
1724 | [AC_MSG_CHECKING([whether set_fs_pwd() wants 2 args]) | |
1725 | SPL_LINUX_TRY_COMPILE([ | |
1726 | #include <linux/sched.h> | |
baf2979e | 1727 | #include <linux/fs_struct.h> |
51a727e9 BB |
1728 | ],[ |
1729 | set_fs_pwd(NULL, NULL); | |
1730 | ],[ | |
1731 | AC_MSG_RESULT(yes) | |
1732 | AC_DEFINE(HAVE_2ARGS_SET_FS_PWD, 1, | |
1733 | [set_fs_pwd() wants 2 args]) | |
1734 | ],[ | |
1735 | AC_MSG_RESULT(no) | |
1736 | ]) | |
1737 | ]) | |
1738 | ||
a093c6a4 BB |
1739 | dnl # |
1740 | dnl # SLES API change, never adopted in mainline, | |
1741 | dnl # Third 'struct vfsmount *' argument removed. | |
1742 | dnl # | |
1743 | AC_DEFUN([SPL_AC_2ARGS_VFS_UNLINK], | |
1744 | [AC_MSG_CHECKING([whether vfs_unlink() wants 2 args]) | |
1745 | SPL_LINUX_TRY_COMPILE([ | |
1746 | #include <linux/fs.h> | |
1747 | ],[ | |
1748 | vfs_unlink(NULL, NULL); | |
1749 | ],[ | |
1750 | AC_MSG_RESULT(yes) | |
1751 | AC_DEFINE(HAVE_2ARGS_VFS_UNLINK, 1, | |
1752 | [vfs_unlink() wants 2 args]) | |
1753 | ],[ | |
1754 | AC_MSG_RESULT(no) | |
1755 | ]) | |
1756 | ]) | |
1757 | ||
1758 | dnl # | |
1759 | dnl # SLES API change, never adopted in mainline, | |
1760 | dnl # Third and sixth 'struct vfsmount *' argument removed. | |
1761 | dnl # | |
1762 | AC_DEFUN([SPL_AC_4ARGS_VFS_RENAME], | |
1763 | [AC_MSG_CHECKING([whether vfs_rename() wants 4 args]) | |
1764 | SPL_LINUX_TRY_COMPILE([ | |
1765 | #include <linux/fs.h> | |
1766 | ],[ | |
1767 | vfs_rename(NULL, NULL, NULL, NULL); | |
1768 | ],[ | |
1769 | AC_MSG_RESULT(yes) | |
1770 | AC_DEFINE(HAVE_4ARGS_VFS_RENAME, 1, | |
1771 | [vfs_rename() wants 4 args]) | |
1772 | ],[ | |
1773 | AC_MSG_RESULT(no) | |
1774 | ]) | |
1775 | ]) | |
ec7d53e9 | 1776 | |
9b2048c2 BB |
1777 | dnl # |
1778 | dnl # 2.6.36 API change, | |
1779 | dnl # The 'struct fs_struct->lock' was changed from a rwlock_t to | |
1780 | dnl # a spinlock_t to improve the fastpath performance. | |
1781 | dnl # | |
1782 | AC_DEFUN([SPL_AC_FS_STRUCT_SPINLOCK], [ | |
1783 | AC_MSG_CHECKING([whether struct fs_struct uses spinlock_t]) | |
97fd6a07 BB |
1784 | tmp_flags="$EXTRA_KCFLAGS" |
1785 | EXTRA_KCFLAGS="-Werror" | |
9b2048c2 BB |
1786 | SPL_LINUX_TRY_COMPILE([ |
1787 | #include <linux/sched.h> | |
1788 | #include <linux/fs_struct.h> | |
1789 | ],[ | |
1790 | struct fs_struct fs; | |
1791 | spin_lock_init(&fs.lock); | |
1792 | ],[ | |
1793 | AC_MSG_RESULT(yes) | |
1794 | AC_DEFINE(HAVE_FS_STRUCT_SPINLOCK, 1, | |
1795 | [struct fs_struct uses spinlock_t]) | |
1796 | ],[ | |
1797 | AC_MSG_RESULT(no) | |
1798 | ]) | |
97fd6a07 | 1799 | EXTRA_KCFLAGS="$tmp_flags" |
9b2048c2 BB |
1800 | ]) |
1801 | ||
ec7d53e9 BB |
1802 | dnl # |
1803 | dnl # 2.6.29 API change, | |
1804 | dnl # check whether 'struct cred' exists | |
1805 | dnl # | |
1806 | AC_DEFUN([SPL_AC_CRED_STRUCT], [ | |
1807 | AC_MSG_CHECKING([whether struct cred exists]) | |
1808 | SPL_LINUX_TRY_COMPILE([ | |
1809 | #include <linux/cred.h> | |
1810 | ],[ | |
03318641 | 1811 | struct cred *cr __attribute__ ((unused)); |
ec7d53e9 BB |
1812 | cr = NULL; |
1813 | ],[ | |
1814 | AC_MSG_RESULT(yes) | |
1815 | AC_DEFINE(HAVE_CRED_STRUCT, 1, [struct cred exists]) | |
1816 | ],[ | |
1817 | AC_MSG_RESULT(no) | |
1818 | ]) | |
1819 | ]) | |
1820 | ||
1821 | dnl # | |
e811949a | 1822 | dnl # Custom SPL patch may export this symbol. |
ec7d53e9 BB |
1823 | dnl # |
1824 | AC_DEFUN([SPL_AC_GROUPS_SEARCH], [ | |
1825 | SPL_CHECK_SYMBOL_EXPORT( | |
1826 | [groups_search], | |
1827 | [], | |
1828 | [AC_DEFINE(HAVE_GROUPS_SEARCH, 1, | |
1829 | [groups_search() is available])], | |
1830 | []) | |
1831 | ]) | |
e811949a BB |
1832 | |
1833 | dnl # | |
1834 | dnl # 2.6.x API change, | |
1835 | dnl # __put_task_struct() was exported in RHEL5 but unavailable elsewhere. | |
1836 | dnl # | |
1837 | AC_DEFUN([SPL_AC_PUT_TASK_STRUCT], [ | |
1838 | SPL_CHECK_SYMBOL_EXPORT( | |
1839 | [__put_task_struct], | |
1840 | [], | |
1841 | [AC_DEFINE(HAVE_PUT_TASK_STRUCT, 1, | |
1842 | [__put_task_struct() is available])], | |
1843 | []) | |
1844 | ]) | |
3977f837 BB |
1845 | |
1846 | dnl # | |
1847 | dnl # 2.6.32 API change, | |
1848 | dnl # Unused 'struct file *' removed from prototype. | |
1849 | dnl # | |
1850 | AC_DEFUN([SPL_AC_5ARGS_PROC_HANDLER], [ | |
1851 | AC_MSG_CHECKING([whether proc_handler() wants 5 args]) | |
1852 | SPL_LINUX_TRY_COMPILE([ | |
1853 | #include <linux/sysctl.h> | |
1854 | ],[ | |
1855 | proc_dostring(NULL, 0, NULL, NULL, NULL); | |
1856 | ],[ | |
1857 | AC_MSG_RESULT(yes) | |
1858 | AC_DEFINE(HAVE_5ARGS_PROC_HANDLER, 1, | |
1859 | [proc_handler() wants 5 args]) | |
1860 | ],[ | |
1861 | AC_MSG_RESULT(no) | |
1862 | ]) | |
1863 | ]) | |
b868e22f BB |
1864 | |
1865 | dnl # | |
1866 | dnl # 2.6.x API change, | |
1867 | dnl # kvasprintf() function added. | |
1868 | dnl # | |
1869 | AC_DEFUN([SPL_AC_KVASPRINTF], [ | |
1870 | SPL_CHECK_SYMBOL_EXPORT( | |
1871 | [kvasprintf], | |
1872 | [], | |
1873 | [AC_DEFINE(HAVE_KVASPRINTF, 1, | |
1874 | [kvasprintf() is available])], | |
1875 | []) | |
1876 | ]) | |
f0ff89fc | 1877 | |
0d0b5237 BB |
1878 | dnl # |
1879 | dnl # 2.6.29 API change, | |
1880 | dnl # vfs_fsync() funcation added, prior to this use file_fsync(). | |
1881 | dnl # | |
1882 | AC_DEFUN([SPL_AC_VFS_FSYNC], [ | |
1883 | SPL_CHECK_SYMBOL_EXPORT( | |
1884 | [vfs_fsync], | |
1885 | [fs/sync.c], | |
1886 | [AC_DEFINE(HAVE_VFS_FSYNC, 1, [vfs_fsync() is available])], | |
1887 | []) | |
1888 | ]) | |
1889 | ||
f0ff89fc BB |
1890 | dnl # |
1891 | dnl # 2.6.35 API change, | |
0d0b5237 | 1892 | dnl # Unused 'struct dentry *' removed from vfs_fsync() prototype. |
f0ff89fc | 1893 | dnl # |
0d0b5237 BB |
1894 | AC_DEFUN([SPL_AC_2ARGS_VFS_FSYNC], [ |
1895 | AC_MSG_CHECKING([whether vfs_fsync() wants 2 args]) | |
f0ff89fc | 1896 | SPL_LINUX_TRY_COMPILE([ |
0d0b5237 | 1897 | #include <linux/fs.h> |
f0ff89fc | 1898 | ],[ |
0d0b5237 | 1899 | vfs_fsync(NULL, 0); |
f0ff89fc BB |
1900 | ],[ |
1901 | AC_MSG_RESULT(yes) | |
0d0b5237 | 1902 | AC_DEFINE(HAVE_2ARGS_VFS_FSYNC, 1, [vfs_fsync() wants 2 args]) |
f0ff89fc BB |
1903 | ],[ |
1904 | AC_MSG_RESULT(no) | |
1905 | ]) | |
1906 | ]) | |
46aa7b39 NB |
1907 | |
1908 | dnl # | |
1909 | dnl # 2.6.33 API change. Also backported in RHEL5 as of 2.6.18-190.el5. | |
1910 | dnl # Earlier versions of rwsem_is_locked() were inline and had a race | |
1911 | dnl # condition. The fixed version is exported as a symbol. The race | |
1912 | dnl # condition is fixed by acquiring sem->wait_lock, so we must not | |
1913 | dnl # call that version while holding sem->wait_lock. | |
1914 | dnl # | |
1915 | AC_DEFUN([SPL_AC_EXPORTED_RWSEM_IS_LOCKED], [ | |
1916 | SPL_CHECK_SYMBOL_EXPORT( | |
1917 | [rwsem_is_locked], | |
1918 | [lib/rwsem-spinlock.c], | |
1919 | [AC_DEFINE(RWSEM_IS_LOCKED_TAKES_WAIT_LOCK, 1, | |
1920 | [rwsem_is_locked() acquires sem->wait_lock])], | |
1921 | []) | |
1922 | ]) | |
914b0631 BB |
1923 | |
1924 | dnl # | |
1925 | dnl # 2.6.37 API compat, | |
1926 | dnl # The function invalidate_inodes() is no longer exported by the kernel. | |
1927 | dnl # The prototype however is still available which means it is safe | |
1928 | dnl # to acquire the symbol's address using spl_kallsyms_lookup_name(). | |
1929 | dnl # | |
5f6c14b1 BB |
1930 | dnl # The Proxmox VE kernel contains a patch which renames the function |
1931 | dnl # invalidate_inodes() to invalidate_inodes_check(). In the process | |
1932 | dnl # it adds a 'check' argument and a '#define invalidate_inodes(x)' | |
1933 | dnl # compatibility wrapper for legacy callers. Therefore, if either | |
1934 | dnl # of these functions are exported invalidate_inodes() can be | |
1935 | dnl # safely used. | |
1936 | dnl # | |
914b0631 BB |
1937 | AC_DEFUN([SPL_AC_KERNEL_INVALIDATE_INODES], [ |
1938 | SPL_CHECK_SYMBOL_EXPORT( | |
1939 | [invalidate_inodes], | |
1940 | [], | |
1941 | [AC_DEFINE(HAVE_INVALIDATE_INODES, 1, | |
1942 | [invalidate_inodes() is available])], | |
1943 | []) | |
5f6c14b1 BB |
1944 | SPL_CHECK_SYMBOL_EXPORT( |
1945 | [invalidate_inodes_check], | |
1946 | [], | |
1947 | [AC_DEFINE(HAVE_INVALIDATE_INODES_CHECK, 1, | |
1948 | [invalidate_inodes_check() is available])], | |
1949 | []) | |
914b0631 | 1950 | ]) |
e76f4bf1 | 1951 | |
9b0f9079 BB |
1952 | dnl # |
1953 | dnl # 2.6.39 API compat, | |
1954 | dnl # The function invalidate_inodes() now take 2 arguments. The second | |
1955 | dnl # 'kill_dirty' argument describes how invalidate_inodes() should | |
1956 | dnl # handle dirty inodes. Only when set will dirty inodes be discarded, | |
1957 | dnl # otherwise they will be handled as busy. | |
1958 | dnl # | |
1959 | dnl # Unfortunately, we don't have access to the invalidate_inodes() | |
1960 | dnl # prototype so it's not easy to check how many arguments it takes. | |
1961 | dnl # However, this change was done for the benefit of invalidate_device() | |
1962 | dnl # which also added an argument. The invalidate_device() symbol does | |
1963 | dnl # exist in the development headers so if it takes two arguments we | |
1964 | dnl # can fairly safely infer that invalidate_inodes() takes two arguments | |
1965 | dnl # as well. See commit 93b270f76e7ef3b81001576860c2701931cdc78b. | |
1966 | dnl # | |
1967 | AC_DEFUN([SPL_AC_KERNEL_2ARGS_INVALIDATE_INODES], | |
1968 | [AC_MSG_CHECKING([whether invalidate_inodes() wants 2 args]) | |
1969 | SPL_LINUX_TRY_COMPILE([ | |
1970 | #include <linux/fs.h> | |
1971 | ],[ | |
1972 | return __invalidate_device(NULL, 0); | |
1973 | ],[ | |
1974 | AC_MSG_RESULT(yes) | |
1975 | AC_DEFINE(HAVE_2ARGS_INVALIDATE_INODES, 1, | |
1976 | [invalidate_inodes() wants 2 args]) | |
1977 | ],[ | |
1978 | AC_MSG_RESULT(no) | |
1979 | ]) | |
1980 | ]) | |
1981 | ||
e76f4bf1 BB |
1982 | dnl # |
1983 | dnl # 2.6.xx API compat, | |
1984 | dnl # There currently exists no exposed API to partially shrink the dcache. | |
1985 | dnl # The expected mechanism to shrink the cache is a registered shrinker | |
1986 | dnl # which is called during memory pressure. | |
1987 | dnl # | |
1988 | AC_DEFUN([SPL_AC_SHRINK_DCACHE_MEMORY], [ | |
1989 | SPL_CHECK_SYMBOL_EXPORT( | |
1990 | [shrink_dcache_memory], | |
1991 | [fs/dcache.c], | |
1992 | [AC_DEFINE(HAVE_SHRINK_DCACHE_MEMORY, 1, | |
1993 | [shrink_dcache_memory() is available])], | |
1994 | []) | |
1995 | ]) | |
1996 | ||
1997 | dnl # | |
1998 | dnl # 2.6.xx API compat, | |
1999 | dnl # There currently exists no exposed API to partially shrink the icache. | |
2000 | dnl # The expected mechanism to shrink the cache is a registered shrinker | |
2001 | dnl # which is called during memory pressure. | |
2002 | dnl # | |
2003 | AC_DEFUN([SPL_AC_SHRINK_ICACHE_MEMORY], [ | |
2004 | SPL_CHECK_SYMBOL_EXPORT( | |
2005 | [shrink_icache_memory], | |
2006 | [fs/inode.c], | |
2007 | [AC_DEFINE(HAVE_SHRINK_ICACHE_MEMORY, 1, | |
2008 | [shrink_icache_memory() is available])], | |
2009 | []) | |
2010 | ]) | |
b1cbc461 BB |
2011 | |
2012 | dnl # | |
2013 | dnl # 2.6.39 API compat, | |
2014 | dnl # The path_lookup() function has been renamed to kern_path_parent() | |
2015 | dnl # and the flags argument has been removed. The only behavior now | |
2016 | dnl # offered is that of LOOKUP_PARENT. The spl already always passed | |
2017 | dnl # this flag so dropping the flag does not impact us. | |
2018 | dnl # | |
12ff95ff BB |
2019 | AC_DEFUN([SPL_AC_KERN_PATH_PARENT_HEADER], [ |
2020 | SPL_CHECK_SYMBOL_HEADER( | |
2021 | [kern_path_parent], | |
2022 | [int kern_path_parent(const char \*, struct nameidata \*)], | |
2023 | [include/linux/namei.h], | |
2024 | [AC_DEFINE(HAVE_KERN_PATH_PARENT_HEADER, 1, | |
2025 | [kern_path_parent() is available])], | |
2026 | []) | |
2027 | ]) | |
2028 | ||
2029 | dnl # | |
2030 | dnl # 3.1 API compat, | |
2031 | dnl # The kern_path_parent() symbol is no longer exported by the kernel. | |
2032 | dnl # However, it remains the prefered interface and since we still have | |
2033 | dnl # access to the prototype we dynamically lookup the required address. | |
2034 | dnl # | |
2035 | AC_DEFUN([SPL_AC_KERN_PATH_PARENT_SYMBOL], [ | |
b1cbc461 BB |
2036 | SPL_CHECK_SYMBOL_EXPORT( |
2037 | [kern_path_parent], | |
2038 | [fs/namei.c], | |
12ff95ff | 2039 | [AC_DEFINE(HAVE_KERN_PATH_PARENT_SYMBOL, 1, |
b1cbc461 BB |
2040 | [kern_path_parent() is available])], |
2041 | []) | |
2042 | ]) | |
3dfc591a BB |
2043 | |
2044 | dnl # | |
2045 | dnl # 2.6.39 API compat, | |
2046 | dnl # The function zlib_deflate_workspacesize() now take 2 arguments. | |
2047 | dnl # This was done to avoid always having to allocate the maximum size | |
2048 | dnl # workspace (268K). The caller can now specific the windowBits and | |
2049 | dnl # memLevel compression parameters to get a smaller workspace. | |
2050 | dnl # | |
2051 | AC_DEFUN([SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE], | |
2052 | [AC_MSG_CHECKING([whether zlib_deflate_workspacesize() wants 2 args]) | |
2053 | SPL_LINUX_TRY_COMPILE([ | |
2054 | #include <linux/zlib.h> | |
2055 | ],[ | |
2056 | return zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL); | |
2057 | ],[ | |
2058 | AC_MSG_RESULT(yes) | |
2059 | AC_DEFINE(HAVE_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE, 1, | |
2060 | [zlib_deflate_workspacesize() wants 2 args]) | |
2061 | ],[ | |
2062 | AC_MSG_RESULT(no) | |
2063 | ]) | |
2064 | ]) | |
a55bcaad BB |
2065 | |
2066 | dnl # | |
2067 | dnl # 2.6.39 API change, | |
2068 | dnl # Shrinker adjust to use common shrink_control structure. | |
2069 | dnl # | |
2070 | AC_DEFUN([SPL_AC_SHRINK_CONTROL_STRUCT], [ | |
2071 | AC_MSG_CHECKING([whether struct shrink_control exists]) | |
2072 | SPL_LINUX_TRY_COMPILE([ | |
2073 | #include <linux/mm.h> | |
2074 | ],[ | |
2075 | struct shrink_control sc __attribute__ ((unused)); | |
2076 | ||
2077 | sc.nr_to_scan = 0; | |
2078 | sc.gfp_mask = GFP_KERNEL; | |
2079 | ],[ | |
2080 | AC_MSG_RESULT(yes) | |
2081 | AC_DEFINE(HAVE_SHRINK_CONTROL_STRUCT, 1, | |
2082 | [struct shrink_control exists]) | |
2083 | ],[ | |
2084 | AC_MSG_RESULT(no) | |
2085 | ]) | |
2086 | ]) | |
588d9004 DH |
2087 | |
2088 | dnl # | |
2089 | dnl # 3.1 API Change | |
2090 | dnl # | |
2091 | dnl # The rw_semaphore.wait_lock member was changed from spinlock_t to | |
2092 | dnl # raw_spinlock_t at commit ddb6c9b58a19edcfac93ac670b066c836ff729f1. | |
2093 | dnl # | |
2094 | AC_DEFUN([SPL_AC_RWSEM_SPINLOCK_IS_RAW], [ | |
2095 | AC_MSG_CHECKING([whether struct rw_semaphore member wait_lock is raw]) | |
2096 | tmp_flags="$EXTRA_KCFLAGS" | |
2097 | EXTRA_KCFLAGS="-Werror" | |
2098 | SPL_LINUX_TRY_COMPILE([ | |
2099 | #include <linux/rwsem.h> | |
2100 | ],[ | |
2101 | struct rw_semaphore dummy_semaphore __attribute__ ((unused)); | |
2102 | raw_spinlock_t dummy_lock __attribute__ ((unused)); | |
2103 | dummy_semaphore.wait_lock = dummy_lock; | |
2104 | ],[ | |
2105 | AC_MSG_RESULT(yes) | |
2106 | AC_DEFINE(RWSEM_SPINLOCK_IS_RAW, 1, | |
2107 | [struct rw_semaphore member wait_lock is raw_spinlock_t]) | |
2108 | ],[ | |
2109 | AC_MSG_RESULT(no) | |
2110 | ]) | |
2111 | EXTRA_KCFLAGS="$tmp_flags" | |
2112 | ]) | |
36811b44 RY |
2113 | |
2114 | dnl # | |
2115 | dnl # Proposed VM Subsystem Bug Fix | |
2116 | dnl # https://bugs.gentoo.org/show_bug.cgi?id=416685 | |
2117 | dnl # | |
2118 | dnl # Make __pte_alloc_kernel() honor gfp flags passed to vmalloc() | |
2119 | dnl # This is detected by checking a macro that is changed to support this. | |
2120 | dnl # | |
2121 | AC_DEFUN([SPL_AC_PMD_ALLOC_WITH_MASK], [ | |
2122 | AC_MSG_CHECKING([whether pmd_alloc_with_mask exists]) | |
2123 | SPL_LINUX_TRY_COMPILE([ | |
2124 | #if !defined(CONFIG_MMU) | |
2125 | #define CONFIG_MMU | |
2126 | #endif | |
2127 | ||
2128 | #if defined(RCH_HAS_4LEVEL_HACK) | |
2129 | #undef RCH_HAS_4LEVEL_HACK | |
2130 | #endif | |
2131 | ||
2132 | #include <linux/mm.h> | |
2133 | ],[ | |
2134 | struct mm_struct init_mm; | |
2135 | pud_t *pud = NULL; | |
2136 | unsigned long addr = 0; | |
2137 | gfp_t gfp_mask = GFP_KERNEL; | |
2138 | ||
2139 | pmd_alloc_with_mask(&init_mm, pud, addr, gfp_mask); | |
2140 | ],[ | |
2141 | AC_MSG_RESULT(yes) | |
2142 | AC_DEFINE(HAVE_PMD_ALLOC_WITH_MASK, 1, | |
2143 | [pmd_alloc_with_mask exists]) | |
2144 | ],[ | |
2145 | AC_MSG_RESULT(no) | |
2146 | ]) | |
2147 | ]) |