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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 | |
4b2220f0 | 21 | SPL_AC_DEBUG_LOG |
86933a6e | 22 | SPL_AC_DEBUG_KMEM |
055ffd98 | 23 | SPL_AC_DEBUG_KMEM_TRACKING |
0408008b | 24 | SPL_AC_TEST_MODULE |
5e9b5d83 | 25 | SPL_AC_ATOMIC_SPINLOCK |
302b88e6 BB |
26 | SPL_AC_TYPE_ATOMIC64_CMPXCHG |
27 | SPL_AC_TYPE_ATOMIC64_XCHG | |
d04c8a56 | 28 | SPL_AC_TYPE_UINTPTR_T |
86933a6e | 29 | SPL_AC_2ARGS_REGISTER_SYSCTL |
c3d9c0df | 30 | SPL_AC_SHRINKER_CALLBACK |
86933a6e | 31 | SPL_AC_CTL_UNNUMBERED |
79a3bf13 | 32 | SPL_AC_CTL_NAME |
c02ab72f | 33 | SPL_AC_VMALLOC_INFO |
1ddf9722 | 34 | SPL_AC_PDE_DATA |
86933a6e | 35 | SPL_AC_FLS64 |
86933a6e BB |
36 | SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT |
37 | SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE | |
38 | SPL_AC_TIMESPEC_SUB | |
86933a6e BB |
39 | SPL_AC_UACCESS_HEADER |
40 | SPL_AC_KMALLOC_NODE | |
41 | SPL_AC_MONOTONIC_CLOCK | |
42 | SPL_AC_INODE_I_MUTEX | |
4d54fdee | 43 | SPL_AC_MUTEX_OWNER |
86fd39f3 | 44 | SPL_AC_MUTEX_OWNER_TASK_STRUCT |
86933a6e | 45 | SPL_AC_MUTEX_LOCK_NESTED |
86933a6e BB |
46 | SPL_AC_3ARGS_ON_EACH_CPU |
47 | SPL_AC_KALLSYMS_LOOKUP_NAME | |
48 | SPL_AC_GET_VMALLOC_INFO | |
49 | SPL_AC_PGDAT_HELPERS | |
50 | SPL_AC_FIRST_ONLINE_PGDAT | |
51 | SPL_AC_NEXT_ONLINE_PGDAT | |
52 | SPL_AC_NEXT_ZONE | |
53 | SPL_AC_PGDAT_LIST | |
86933a6e | 54 | SPL_AC_GLOBAL_PAGE_STATE |
6ae7fef5 BB |
55 | SPL_AC_ZONE_STAT_ITEM_FREE |
56 | SPL_AC_ZONE_STAT_ITEM_INACTIVE | |
57 | SPL_AC_ZONE_STAT_ITEM_ACTIVE | |
58 | SPL_AC_GET_ZONE_COUNTS | |
7119bf70 | 59 | SPL_AC_USER_PATH_DIR |
51a727e9 | 60 | SPL_AC_SET_FS_PWD |
a54718cf | 61 | SPL_AC_SET_FS_PWD_WITH_CONST |
86933a6e BB |
62 | SPL_AC_2ARGS_VFS_UNLINK |
63 | SPL_AC_4ARGS_VFS_RENAME | |
0d0b5237 BB |
64 | SPL_AC_VFS_FSYNC |
65 | SPL_AC_2ARGS_VFS_FSYNC | |
bbdc6ae4 | 66 | SPL_AC_INODE_TRUNCATE_RANGE |
9b2048c2 | 67 | SPL_AC_FS_STRUCT_SPINLOCK |
ec7d53e9 | 68 | SPL_AC_CRED_STRUCT |
f7fd6ddd | 69 | SPL_AC_KUIDGID_T |
ec7d53e9 | 70 | SPL_AC_GROUPS_SEARCH |
e811949a | 71 | SPL_AC_PUT_TASK_STRUCT |
3977f837 | 72 | SPL_AC_5ARGS_PROC_HANDLER |
b868e22f | 73 | SPL_AC_KVASPRINTF |
46aa7b39 | 74 | SPL_AC_EXPORTED_RWSEM_IS_LOCKED |
1c7b3eaf | 75 | SPL_AC_KERNEL_FALLOCATE |
e76f4bf1 BB |
76 | SPL_AC_SHRINK_DCACHE_MEMORY |
77 | SPL_AC_SHRINK_ICACHE_MEMORY | |
ec18fe3c | 78 | SPL_AC_KERN_PATH |
de081a2a | 79 | SPL_AC_CONFIG_KALLSYMS |
42b3ce62 BB |
80 | SPL_AC_CONFIG_ZLIB_INFLATE |
81 | SPL_AC_CONFIG_ZLIB_DEFLATE | |
3dfc591a | 82 | SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE |
a55bcaad | 83 | SPL_AC_SHRINK_CONTROL_STRUCT |
588d9004 | 84 | SPL_AC_RWSEM_SPINLOCK_IS_RAW |
10087fe1 | 85 | SPL_AC_SCHED_RT_HEADER |
2a305c34 | 86 | SPL_AC_2ARGS_VFS_GETATTR |
184c6873 | 87 | SPL_AC_USLEEP_RANGE |
a073aeb0 | 88 | SPL_AC_KMEM_CACHE_ALLOCFLAGS |
2fc44f66 | 89 | SPL_AC_WAIT_ON_BIT |
86933a6e BB |
90 | ]) |
91 | ||
92 | AC_DEFUN([SPL_AC_MODULE_SYMVERS], [ | |
bb339d06 | 93 | modpost=$LINUX/scripts/Makefile.modpost |
86933a6e | 94 | AC_MSG_CHECKING([kernel file name for module symbols]) |
0408008b | 95 | if test "x$enable_linux_builtin" != xyes -a -f "$modpost"; then |
bb339d06 BB |
96 | if grep -q Modules.symvers $modpost; then |
97 | LINUX_SYMBOLS=Modules.symvers | |
98 | else | |
99 | LINUX_SYMBOLS=Module.symvers | |
100 | fi | |
912fd84d BB |
101 | |
102 | if ! test -f "$LINUX_OBJ/$LINUX_SYMBOLS"; then | |
103 | AC_MSG_ERROR([ | |
104 | *** Please make sure the kernel devel package for your distribution | |
7a8a6393 | 105 | *** is installed. If you are building with a custom kernel, make sure the |
912fd84d BB |
106 | *** kernel is configured, built, and the '--with-linux=PATH' configure |
107 | *** option refers to the location of the kernel source.]) | |
108 | fi | |
86933a6e | 109 | else |
bb339d06 | 110 | LINUX_SYMBOLS=NONE |
86933a6e BB |
111 | fi |
112 | AC_MSG_RESULT($LINUX_SYMBOLS) | |
113 | AC_SUBST(LINUX_SYMBOLS) | |
114 | ]) | |
115 | ||
57d86234 | 116 | AC_DEFUN([SPL_AC_KERNEL], [ |
57d86234 | 117 | AC_ARG_WITH([linux], |
118 | AS_HELP_STRING([--with-linux=PATH], | |
119 | [Path to kernel source]), | |
39a3d2a4 | 120 | [kernelsrc="$withval"]) |
57d86234 | 121 | |
122 | AC_ARG_WITH([linux-obj], | |
123 | AS_HELP_STRING([--with-linux-obj=PATH], | |
124 | [Path to kernel build objects]), | |
125 | [kernelbuild="$withval"]) | |
126 | ||
127 | AC_MSG_CHECKING([kernel source directory]) | |
128 | if test -z "$kernelsrc"; then | |
22ccfaa8 BB |
129 | if test -e "/lib/modules/$(uname -r)/source"; then |
130 | headersdir="/lib/modules/$(uname -r)/source" | |
131 | sourcelink=$(readlink -f "$headersdir") | |
132 | elif test -e "/lib/modules/$(uname -r)/build"; then | |
133 | headersdir="/lib/modules/$(uname -r)/build" | |
534c4e38 BM |
134 | sourcelink=$(readlink -f "$headersdir") |
135 | else | |
136 | sourcelink=$(ls -1d /usr/src/kernels/* \ | |
723aa3b0 | 137 | /usr/src/linux-* \ |
534c4e38 BM |
138 | 2>/dev/null | grep -v obj | tail -1) |
139 | fi | |
57d86234 | 140 | |
8fd4e3af | 141 | if test -n "$sourcelink" && test -e ${sourcelink}; then |
d4326403 | 142 | kernelsrc=`readlink -f ${sourcelink}` |
d4326403 | 143 | else |
251677e9 | 144 | kernelsrc="[Not found]" |
57d86234 | 145 | fi |
c5f70460 BB |
146 | else |
147 | if test "$kernelsrc" = "NONE"; then | |
148 | kernsrcver=NONE | |
149 | fi | |
57d86234 | 150 | fi |
151 | ||
152 | AC_MSG_RESULT([$kernelsrc]) | |
251677e9 BB |
153 | if test ! -d "$kernelsrc"; then |
154 | AC_MSG_ERROR([ | |
155 | *** Please make sure the kernel devel package for your distribution | |
7a8a6393 | 156 | *** is installed and then try again. If that fails, you can specify the |
251677e9 BB |
157 | *** location of the kernel source with the '--with-linux=PATH' option.]) |
158 | fi | |
159 | ||
57d86234 | 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 | ||
287b2fb1 BB |
222 | dnl # |
223 | dnl # Default SPL user configuration | |
224 | dnl # | |
ad35b6a6 | 225 | AC_DEFUN([SPL_AC_CONFIG_USER], []) |
287b2fb1 BB |
226 | |
227 | dnl # | |
228 | dnl # Check for rpm+rpmbuild to build RPM packages. If these tools | |
7a8a6393 | 229 | dnl # are missing, it is non-fatal, but you will not be able to build |
287b2fb1 BB |
230 | dnl # RPM packages and will be warned if you try too. |
231 | dnl # | |
7a8a6393 | 232 | dnl # By default, the generic spec file will be used because it requires |
493972c8 BB |
233 | dnl # minimal dependencies. Distribution specific spec files can be |
234 | dnl # placed under the 'rpm/<distribution>' directory and enabled using | |
235 | dnl # the --with-spec=<distribution> configure option. | |
236 | dnl # | |
287b2fb1 BB |
237 | AC_DEFUN([SPL_AC_RPM], [ |
238 | RPM=rpm | |
239 | RPMBUILD=rpmbuild | |
240 | ||
241 | AC_MSG_CHECKING([whether $RPM is available]) | |
242 | AS_IF([tmp=$($RPM --version 2>/dev/null)], [ | |
243 | RPM_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }') | |
244 | HAVE_RPM=yes | |
245 | AC_MSG_RESULT([$HAVE_RPM ($RPM_VERSION)]) | |
246 | ],[ | |
247 | HAVE_RPM=no | |
248 | AC_MSG_RESULT([$HAVE_RPM]) | |
249 | ]) | |
250 | ||
251 | AC_MSG_CHECKING([whether $RPMBUILD is available]) | |
252 | AS_IF([tmp=$($RPMBUILD --version 2>/dev/null)], [ | |
253 | RPMBUILD_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }') | |
254 | HAVE_RPMBUILD=yes | |
255 | AC_MSG_RESULT([$HAVE_RPMBUILD ($RPMBUILD_VERSION)]) | |
256 | ],[ | |
257 | HAVE_RPMBUILD=no | |
258 | AC_MSG_RESULT([$HAVE_RPMBUILD]) | |
259 | ]) | |
260 | ||
493972c8 BB |
261 | RPM_DEFINE_COMMON='--define "$(DEBUG_SPL) 1" --define "$(DEBUG_LOG) 1" --define "$(DEBUG_KMEM) 1" --define "$(DEBUG_KMEM_TRACKING) 1"' |
262 | RPM_DEFINE_UTIL= | |
263 | RPM_DEFINE_KMOD='--define "kernels $(LINUX_VERSION)"' | |
264 | RPM_DEFINE_DKMS= | |
265 | ||
266 | SRPM_DEFINE_COMMON='--define "build_src_rpm 1"' | |
267 | SRPM_DEFINE_UTIL= | |
268 | SRPM_DEFINE_KMOD= | |
269 | SRPM_DEFINE_DKMS= | |
270 | ||
271 | RPM_SPEC_DIR="rpm/generic" | |
272 | AC_ARG_WITH([spec], | |
273 | AS_HELP_STRING([--with-spec=SPEC], | |
274 | [Spec files 'generic|fedora']), | |
275 | [RPM_SPEC_DIR="rpm/$withval"]) | |
276 | ||
277 | AC_MSG_CHECKING([whether spec files are available]) | |
278 | AC_MSG_RESULT([yes ($RPM_SPEC_DIR/*.spec.in)]) | |
279 | ||
287b2fb1 BB |
280 | AC_SUBST(HAVE_RPM) |
281 | AC_SUBST(RPM) | |
282 | AC_SUBST(RPM_VERSION) | |
283 | ||
284 | AC_SUBST(HAVE_RPMBUILD) | |
285 | AC_SUBST(RPMBUILD) | |
286 | AC_SUBST(RPMBUILD_VERSION) | |
493972c8 BB |
287 | |
288 | AC_SUBST(RPM_SPEC_DIR) | |
289 | AC_SUBST(RPM_DEFINE_UTIL) | |
290 | AC_SUBST(RPM_DEFINE_KMOD) | |
291 | AC_SUBST(RPM_DEFINE_DKMS) | |
292 | AC_SUBST(RPM_DEFINE_COMMON) | |
293 | AC_SUBST(SRPM_DEFINE_UTIL) | |
294 | AC_SUBST(SRPM_DEFINE_KMOD) | |
295 | AC_SUBST(SRPM_DEFINE_DKMS) | |
296 | AC_SUBST(SRPM_DEFINE_COMMON) | |
287b2fb1 BB |
297 | ]) |
298 | ||
299 | dnl # | |
300 | dnl # Check for dpkg+dpkg-buildpackage to build DEB packages. If these | |
301 | dnl # tools are missing it is non-fatal but you will not be able to build | |
302 | dnl # DEB packages and will be warned if you try too. | |
303 | dnl # | |
304 | AC_DEFUN([SPL_AC_DPKG], [ | |
305 | DPKG=dpkg | |
306 | DPKGBUILD=dpkg-buildpackage | |
307 | ||
308 | AC_MSG_CHECKING([whether $DPKG is available]) | |
309 | AS_IF([tmp=$($DPKG --version 2>/dev/null)], [ | |
310 | DPKG_VERSION=$(echo $tmp | $AWK '/Debian/ { print $[7] }') | |
311 | HAVE_DPKG=yes | |
312 | AC_MSG_RESULT([$HAVE_DPKG ($DPKG_VERSION)]) | |
313 | ],[ | |
314 | HAVE_DPKG=no | |
315 | AC_MSG_RESULT([$HAVE_DPKG]) | |
316 | ]) | |
317 | ||
318 | AC_MSG_CHECKING([whether $DPKGBUILD is available]) | |
319 | AS_IF([tmp=$($DPKGBUILD --version 2>/dev/null)], [ | |
320 | DPKGBUILD_VERSION=$(echo $tmp | \ | |
321 | $AWK '/Debian/ { print $[4] }' | cut -f-4 -d'.') | |
322 | HAVE_DPKGBUILD=yes | |
323 | AC_MSG_RESULT([$HAVE_DPKGBUILD ($DPKGBUILD_VERSION)]) | |
324 | ],[ | |
325 | HAVE_DPKGBUILD=no | |
326 | AC_MSG_RESULT([$HAVE_DPKGBUILD]) | |
327 | ]) | |
328 | ||
329 | AC_SUBST(HAVE_DPKG) | |
330 | AC_SUBST(DPKG) | |
331 | AC_SUBST(DPKG_VERSION) | |
332 | ||
333 | AC_SUBST(HAVE_DPKGBUILD) | |
334 | AC_SUBST(DPKGBUILD) | |
335 | AC_SUBST(DPKGBUILD_VERSION) | |
336 | ]) | |
337 | ||
338 | dnl # | |
339 | dnl # Until native packaging for various different packing systems | |
340 | dnl # can be added the least we can do is attempt to use alien to | |
341 | dnl # convert the RPM packages to the needed package type. This is | |
342 | dnl # a hack but so far it has worked reasonable well. | |
343 | dnl # | |
344 | AC_DEFUN([SPL_AC_ALIEN], [ | |
345 | ALIEN=alien | |
346 | ||
347 | AC_MSG_CHECKING([whether $ALIEN is available]) | |
348 | AS_IF([tmp=$($ALIEN --version 2>/dev/null)], [ | |
349 | ALIEN_VERSION=$(echo $tmp | $AWK '{ print $[3] }') | |
350 | HAVE_ALIEN=yes | |
351 | AC_MSG_RESULT([$HAVE_ALIEN ($ALIEN_VERSION)]) | |
352 | ],[ | |
353 | HAVE_ALIEN=no | |
354 | AC_MSG_RESULT([$HAVE_ALIEN]) | |
355 | ]) | |
356 | ||
357 | AC_SUBST(HAVE_ALIEN) | |
358 | AC_SUBST(ALIEN) | |
359 | AC_SUBST(ALIEN_VERSION) | |
360 | ]) | |
361 | ||
362 | dnl # | |
363 | dnl # Using the VENDOR tag from config.guess set the default | |
364 | dnl # package type for 'make pkg': (rpm | deb | tgz) | |
365 | dnl # | |
366 | AC_DEFUN([SPL_AC_DEFAULT_PACKAGE], [ | |
73fc084e | 367 | AC_MSG_CHECKING([linux distribution]) |
a3a69b74 BB |
368 | if test -f /etc/toss-release ; then |
369 | VENDOR=toss ; | |
73fc084e BB |
370 | elif test -f /etc/fedora-release ; then |
371 | VENDOR=fedora ; | |
a3a69b74 BB |
372 | elif test -f /etc/redhat-release ; then |
373 | VENDOR=redhat ; | |
374 | elif test -f /etc/gentoo-release ; then | |
375 | VENDOR=gentoo ; | |
cd2817f8 PS |
376 | elif test -f /etc/arch-release ; then |
377 | VENDOR=arch ; | |
73fc084e BB |
378 | elif test -f /etc/SuSE-release ; then |
379 | VENDOR=sles ; | |
380 | elif test -f /etc/slackware-version ; then | |
381 | VENDOR=slackware ; | |
a3a69b74 BB |
382 | elif test -f /etc/lunar.release ; then |
383 | VENDOR=lunar ; | |
384 | elif test -f /etc/lsb-release ; then | |
385 | VENDOR=ubuntu ; | |
386 | elif test -f /etc/debian_version ; then | |
387 | VENDOR=debian ; | |
73fc084e BB |
388 | else |
389 | VENDOR= ; | |
390 | fi | |
391 | AC_MSG_RESULT([$VENDOR]) | |
392 | AC_SUBST(VENDOR) | |
287b2fb1 BB |
393 | |
394 | AC_MSG_CHECKING([default package type]) | |
395 | case "$VENDOR" in | |
a3a69b74 BB |
396 | toss) DEFAULT_PACKAGE=rpm ;; |
397 | redhat) DEFAULT_PACKAGE=rpm ;; | |
398 | fedora) DEFAULT_PACKAGE=rpm ;; | |
399 | gentoo) DEFAULT_PACKAGE=tgz ;; | |
5f0a4b08 | 400 | arch) DEFAULT_PACKAGE=tgz ;; |
a3a69b74 BB |
401 | sles) DEFAULT_PACKAGE=rpm ;; |
402 | slackware) DEFAULT_PACKAGE=tgz ;; | |
403 | lunar) DEFAULT_PACKAGE=tgz ;; | |
404 | ubuntu) DEFAULT_PACKAGE=deb ;; | |
405 | debian) DEFAULT_PACKAGE=deb ;; | |
406 | *) DEFAULT_PACKAGE=rpm ;; | |
287b2fb1 BB |
407 | esac |
408 | ||
409 | AC_MSG_RESULT([$DEFAULT_PACKAGE]) | |
410 | AC_SUBST(DEFAULT_PACKAGE) | |
411 | ]) | |
412 | ||
413 | dnl # | |
414 | dnl # Default SPL user configuration | |
415 | dnl # | |
416 | AC_DEFUN([SPL_AC_PACKAGE], [ | |
0b14b9f3 | 417 | SPL_AC_DEFAULT_PACKAGE |
287b2fb1 BB |
418 | SPL_AC_RPM |
419 | SPL_AC_DPKG | |
420 | SPL_AC_ALIEN | |
287b2fb1 BB |
421 | ]) |
422 | ||
6a1c3d41 | 423 | AC_DEFUN([SPL_AC_LICENSE], [ |
62032954 BB |
424 | AC_MSG_CHECKING([spl author]) |
425 | AC_MSG_RESULT([$SPL_META_AUTHOR]) | |
426 | ||
86933a6e | 427 | AC_MSG_CHECKING([spl license]) |
62032954 | 428 | AC_MSG_RESULT([$SPL_META_LICENSE]) |
86933a6e BB |
429 | ]) |
430 | ||
431 | AC_DEFUN([SPL_AC_CONFIG], [ | |
0408008b ED |
432 | SPL_CONFIG=all |
433 | AC_ARG_WITH([config], | |
434 | AS_HELP_STRING([--with-config=CONFIG], | |
435 | [Config file 'kernel|user|all|srpm']), | |
436 | [SPL_CONFIG="$withval"]) | |
437 | AC_ARG_ENABLE([linux-builtin], | |
438 | [AC_HELP_STRING([--enable-linux-builtin], | |
439 | [Configure for builtin in-tree kernel modules @<:@default=no@:>@])], | |
440 | [], | |
441 | [enable_linux_builtin=no]) | |
442 | ||
443 | AC_MSG_CHECKING([spl config]) | |
444 | AC_MSG_RESULT([$SPL_CONFIG]); | |
445 | AC_SUBST(SPL_CONFIG) | |
446 | ||
447 | case "$SPL_CONFIG" in | |
448 | kernel) SPL_AC_CONFIG_KERNEL ;; | |
449 | user) SPL_AC_CONFIG_USER ;; | |
450 | all) SPL_AC_CONFIG_KERNEL | |
451 | SPL_AC_CONFIG_USER ;; | |
c1541dfe | 452 | srpm) ;; |
0408008b ED |
453 | *) |
454 | AC_MSG_RESULT([Error!]) | |
455 | AC_MSG_ERROR([Bad value "$SPL_CONFIG" for --with-config, | |
456 | user kernel|user|all|srpm]) ;; | |
457 | esac | |
458 | ||
459 | AM_CONDITIONAL([CONFIG_USER], | |
460 | [test "$SPL_CONFIG" = user -o "$SPL_CONFIG" = all]) | |
461 | AM_CONDITIONAL([CONFIG_KERNEL], | |
462 | [test "$SPL_CONFIG" = kernel -o "$SPL_CONFIG" = all] && | |
463 | [test "x$enable_linux_builtin" != xyes ]) | |
6a1c3d41 | 464 | ]) |
465 | ||
055ffd98 BB |
466 | dnl # |
467 | dnl # Enable if the SPL should be compiled with internal debugging enabled. | |
468 | dnl # By default this support is disabled. | |
469 | dnl # | |
57d86234 | 470 | AC_DEFUN([SPL_AC_DEBUG], [ |
c950d148 | 471 | AC_MSG_CHECKING([whether debugging is enabled]) |
055ffd98 BB |
472 | AC_ARG_ENABLE([debug], |
473 | [AS_HELP_STRING([--enable-debug], | |
474 | [Enable generic debug support @<:@default=no@:>@])], | |
475 | [], | |
476 | [enable_debug=no]) | |
477 | ||
478 | AS_IF([test "x$enable_debug" = xyes], | |
c950d148 | 479 | [ |
c950d148 BB |
480 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG -Werror" |
481 | DEBUG_CFLAGS="-DDEBUG -Werror" | |
3c208a54 BB |
482 | DEBUG_SPL="_with_debug" |
483 | ], [ | |
c950d148 BB |
484 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DNDEBUG" |
485 | DEBUG_CFLAGS="-DNDEBUG" | |
3c208a54 | 486 | DEBUG_SPL="_without_debug" |
c950d148 | 487 | ]) |
055ffd98 | 488 | |
c950d148 | 489 | AC_SUBST(DEBUG_CFLAGS) |
3c208a54 | 490 | AC_SUBST(DEBUG_SPL) |
055ffd98 | 491 | AC_MSG_RESULT([$enable_debug]) |
57d86234 | 492 | ]) |
493 | ||
4b2220f0 BB |
494 | dnl # |
495 | dnl # Enabled by default it provides a basic debug log infrastructure. | |
496 | dnl # Each subsystem registers itself with a name and logs messages | |
497 | dnl # using predefined types. If the debug mask it set to allow the | |
498 | dnl # message type it will be written to the internal log. The log | |
499 | dnl # can be dumped to a file by echoing 1 to the 'dump' proc entry, | |
500 | dnl # after dumping the log it must be decoded using the spl utility. | |
501 | dnl # | |
502 | dnl # echo 1 >/proc/sys/kernel/spl/debug/dump | |
503 | dnl # spl /tmp/spl-log.xxx.yyy /tmp/spl-log.xxx.yyy.txt | |
504 | dnl # | |
505 | AC_DEFUN([SPL_AC_DEBUG_LOG], [ | |
506 | AC_ARG_ENABLE([debug-log], | |
507 | [AS_HELP_STRING([--enable-debug-log], | |
508 | [Enable basic debug logging @<:@default=yes@:>@])], | |
509 | [], | |
510 | [enable_debug_log=yes]) | |
511 | ||
512 | AS_IF([test "x$enable_debug_log" = xyes], | |
3c208a54 BB |
513 | [ |
514 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_LOG" | |
515 | DEBUG_LOG="_with_debug_log" | |
516 | AC_DEFINE([DEBUG_LOG], [1], | |
4b2220f0 | 517 | [Define to 1 to enable basic debug logging]) |
3c208a54 BB |
518 | ], [ |
519 | DEBUG_LOG="_without_debug_log" | |
520 | ]) | |
4b2220f0 | 521 | |
3c208a54 | 522 | AC_SUBST(DEBUG_LOG) |
4b2220f0 BB |
523 | AC_MSG_CHECKING([whether basic debug logging is enabled]) |
524 | AC_MSG_RESULT([$enable_debug_log]) | |
525 | ]) | |
526 | ||
055ffd98 BB |
527 | dnl # |
528 | dnl # Enabled by default it provides a minimal level of memory tracking. | |
529 | dnl # A total count of bytes allocated is kept for each alloc and free. | |
530 | dnl # Then at module unload time a report to the console will be printed | |
531 | dnl # if memory was leaked. Additionally, /proc/spl/kmem/slab will exist | |
532 | dnl # and provide an easy way to inspect the kmem based slab. | |
533 | dnl # | |
57d86234 | 534 | AC_DEFUN([SPL_AC_DEBUG_KMEM], [ |
055ffd98 BB |
535 | AC_ARG_ENABLE([debug-kmem], |
536 | [AS_HELP_STRING([--enable-debug-kmem], | |
537 | [Enable basic kmem accounting @<:@default=yes@:>@])], | |
538 | [], | |
539 | [enable_debug_kmem=yes]) | |
57d86234 | 540 | |
055ffd98 | 541 | AS_IF([test "x$enable_debug_kmem" = xyes], |
3c208a54 BB |
542 | [ |
543 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM" | |
544 | DEBUG_KMEM="_with_debug_kmem" | |
545 | AC_DEFINE([DEBUG_KMEM], [1], | |
055ffd98 | 546 | [Define to 1 to enable basic kmem accounting]) |
3c208a54 BB |
547 | ], [ |
548 | DEBUG_KMEM="_without_debug_kmem" | |
549 | ]) | |
055ffd98 | 550 | |
3c208a54 | 551 | AC_SUBST(DEBUG_KMEM) |
055ffd98 BB |
552 | AC_MSG_CHECKING([whether basic kmem accounting is enabled]) |
553 | AC_MSG_RESULT([$enable_debug_kmem]) | |
57d86234 | 554 | ]) |
555 | ||
055ffd98 BB |
556 | dnl # |
557 | dnl # Disabled by default it provides detailed memory tracking. This | |
558 | dnl # feature also requires --enable-debug-kmem to be set. When enabled | |
559 | dnl # not only will total bytes be tracked but also the location of every | |
560 | dnl # alloc and free. When the SPL module is unloaded a list of all leaked | |
561 | dnl # addresses and where they were allocated will be dumped to the console. | |
562 | dnl # Enabling this feature has a significant impact on performance but it | |
563 | dnl # makes finding memory leaks pretty straight forward. | |
564 | dnl # | |
565 | AC_DEFUN([SPL_AC_DEBUG_KMEM_TRACKING], [ | |
566 | AC_ARG_ENABLE([debug-kmem-tracking], | |
567 | [AS_HELP_STRING([--enable-debug-kmem-tracking], | |
568 | [Enable detailed kmem tracking @<:@default=no@:>@])], | |
569 | [], | |
570 | [enable_debug_kmem_tracking=no]) | |
571 | ||
572 | AS_IF([test "x$enable_debug_kmem_tracking" = xyes], | |
3c208a54 BB |
573 | [ |
574 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM_TRACKING" | |
575 | DEBUG_KMEM_TRACKING="_with_debug_kmem_tracking" | |
576 | AC_DEFINE([DEBUG_KMEM_TRACKING], [1], | |
055ffd98 | 577 | [Define to 1 to enable detailed kmem tracking]) |
3c208a54 BB |
578 | ], [ |
579 | DEBUG_KMEM_TRACKING="_without_debug_kmem_tracking" | |
580 | ]) | |
055ffd98 | 581 | |
3c208a54 | 582 | AC_SUBST(DEBUG_KMEM_TRACKING) |
055ffd98 BB |
583 | AC_MSG_CHECKING([whether detailed kmem tracking is enabled]) |
584 | AC_MSG_RESULT([$enable_debug_kmem_tracking]) | |
57d86234 | 585 | ]) |
586 | ||
587 | dnl # | |
588 | dnl # SPL_LINUX_CONFTEST | |
589 | dnl # | |
590 | AC_DEFUN([SPL_LINUX_CONFTEST], [ | |
dbe561d8 | 591 | cat confdefs.h - <<_ACEOF >conftest.c |
57d86234 | 592 | $1 |
593 | _ACEOF | |
594 | ]) | |
595 | ||
596 | dnl # | |
597 | dnl # SPL_LANG_PROGRAM(C)([PROLOGUE], [BODY]) | |
598 | dnl # | |
599 | m4_define([SPL_LANG_PROGRAM], [ | |
600 | $1 | |
601 | int | |
602 | main (void) | |
603 | { | |
604 | dnl Do *not* indent the following line: there may be CPP directives. | |
605 | dnl Don't move the `;' right after for the same reason. | |
606 | $2 | |
607 | ; | |
608 | return 0; | |
609 | } | |
610 | ]) | |
611 | ||
612 | dnl # | |
613 | dnl # SPL_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE | |
614 | dnl # | |
615 | AC_DEFUN([SPL_LINUX_COMPILE_IFELSE], [ | |
c5f70460 | 616 | m4_ifvaln([$1], [SPL_LINUX_CONFTEST([$1])]) |
df7cc5bc | 617 | rm -Rf build && mkdir -p build && touch build/conftest.mod.c |
c5f70460 | 618 | echo "obj-m := conftest.o" >build/Makefile |
df7cc5bc ED |
619 | modpost_flag='' |
620 | test "x$enable_linux_builtin" = xyes && modpost_flag='modpost=true' # fake modpost stage | |
c5f70460 | 621 | AS_IF( |
df7cc5bc ED |
622 | [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])], |
623 | [$4], | |
624 | [_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])] | |
c5f70460 BB |
625 | ) |
626 | rm -Rf build | |
57d86234 | 627 | ]) |
628 | ||
629 | dnl # | |
630 | dnl # SPL_LINUX_TRY_COMPILE like AC_TRY_COMPILE | |
631 | dnl # | |
632 | AC_DEFUN([SPL_LINUX_TRY_COMPILE], | |
633 | [SPL_LINUX_COMPILE_IFELSE( | |
d50bd9e2 | 634 | [AC_LANG_SOURCE([SPL_LANG_PROGRAM([[$1]], [[$2]])])], |
635 | [modules], | |
636 | [test -s build/conftest.o], | |
637 | [$3], [$4]) | |
57d86234 | 638 | ]) |
639 | ||
57d86234 | 640 | dnl # |
641 | dnl # SPL_CHECK_SYMBOL_EXPORT | |
642 | dnl # check symbol exported or not | |
643 | dnl # | |
723aa3b0 | 644 | AC_DEFUN([SPL_CHECK_SYMBOL_EXPORT], [ |
2e0e7e69 BB |
645 | grep -q -E '[[[:space:]]]$1[[[:space:]]]' \ |
646 | $LINUX_OBJ/Module*.symvers 2>/dev/null | |
57d86234 | 647 | rc=$? |
648 | if test $rc -ne 0; then | |
649 | export=0 | |
650 | for file in $2; do | |
2e0e7e69 BB |
651 | grep -q -E "EXPORT_SYMBOL.*($1)" \ |
652 | "$LINUX_OBJ/$file" 2>/dev/null | |
57d86234 | 653 | rc=$? |
723aa3b0 ED |
654 | if test $rc -eq 0; then |
655 | export=1 | |
656 | break; | |
657 | fi | |
57d86234 | 658 | done |
723aa3b0 | 659 | if test $export -eq 0; then : |
57d86234 | 660 | $4 |
723aa3b0 | 661 | else : |
57d86234 | 662 | $3 |
663 | fi | |
723aa3b0 | 664 | else : |
57d86234 | 665 | $3 |
666 | fi | |
667 | ]) | |
668 | ||
723aa3b0 ED |
669 | dnl # |
670 | dnl # SPL_LINUX_TRY_COMPILE_SYMBOL | |
671 | dnl # like SPL_LINUX_TRY_COMPILE, except SPL_CHECK_SYMBOL_EXPORT | |
672 | dnl # is called if not compiling for builtin | |
673 | dnl # | |
674 | AC_DEFUN([SPL_LINUX_TRY_COMPILE_SYMBOL], [ | |
675 | SPL_LINUX_TRY_COMPILE([$1], [$2], [rc=0], [rc=1]) | |
676 | if test $rc -ne 0; then : | |
677 | $6 | |
678 | else | |
679 | if test "x$enable_linux_builtin" != xyes; then | |
680 | SPL_CHECK_SYMBOL_EXPORT([$3], [$4], [rc=0], [rc=1]) | |
681 | fi | |
682 | if test $rc -ne 0; then : | |
683 | $6 | |
684 | else : | |
685 | $5 | |
686 | fi | |
687 | fi | |
688 | ]) | |
689 | ||
12ff95ff BB |
690 | dnl # |
691 | dnl # SPL_CHECK_SYMBOL_HEADER | |
692 | dnl # check if a symbol prototype is defined in listed headers. | |
693 | dnl # | |
694 | AC_DEFUN([SPL_CHECK_SYMBOL_HEADER], [ | |
695 | AC_MSG_CHECKING([whether symbol $1 exists in header]) | |
696 | header=0 | |
697 | for file in $3; do | |
698 | grep -q "$2" "$LINUX/$file" 2>/dev/null | |
699 | rc=$? | |
723aa3b0 ED |
700 | if test $rc -eq 0; then |
701 | header=1 | |
702 | break; | |
703 | fi | |
12ff95ff BB |
704 | done |
705 | if test $header -eq 0; then | |
706 | AC_MSG_RESULT([no]) | |
707 | $5 | |
708 | else | |
709 | AC_MSG_RESULT([yes]) | |
710 | $4 | |
711 | fi | |
712 | ]) | |
713 | ||
86de8532 | 714 | dnl # |
715 | dnl # SPL_CHECK_HEADER | |
716 | dnl # check whether header exists and define HAVE_$2_HEADER | |
717 | dnl # | |
718 | AC_DEFUN([SPL_CHECK_HEADER], | |
719 | [AC_MSG_CHECKING([whether header $1 exists]) | |
720 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 721 | #include <$1> |
86de8532 | 722 | ],[ |
723 | return 0; | |
724 | ],[ | |
725 | AC_DEFINE(HAVE_$2_HEADER, 1, [$1 exists]) | |
726 | AC_MSG_RESULT(yes) | |
727 | $3 | |
728 | ],[ | |
729 | AC_MSG_RESULT(no) | |
730 | $4 | |
731 | ]) | |
732 | ]) | |
6a6cafbe | 733 | |
0408008b | 734 | dnl # |
62032954 BB |
735 | dnl # Basic toolchain sanity check. Verify that kernel modules can |
736 | dnl # be built and which symbols can be used. | |
0408008b ED |
737 | dnl # |
738 | AC_DEFUN([SPL_AC_TEST_MODULE], | |
739 | [AC_MSG_CHECKING([whether modules can be built]) | |
740 | SPL_LINUX_TRY_COMPILE([],[],[ | |
741 | AC_MSG_RESULT([yes]) | |
742 | ],[ | |
743 | AC_MSG_RESULT([no]) | |
744 | if test "x$enable_linux_builtin" != xyes; then | |
745 | AC_MSG_ERROR([*** Unable to build an empty module.]) | |
746 | else | |
747 | AC_MSG_ERROR([ | |
748 | *** Unable to build an empty module. | |
749 | *** Please run 'make scripts' inside the kernel source tree.]) | |
750 | fi | |
751 | ]) | |
62032954 BB |
752 | |
753 | AC_RUN_IFELSE([ | |
754 | AC_LANG_PROGRAM([ | |
755 | #include "$LINUX/include/linux/license.h" | |
756 | ], [ | |
757 | return !license_is_gpl_compatible("$SPL_META_LICENSE"); | |
758 | ]) | |
759 | ], [ | |
760 | AC_DEFINE([SPL_IS_GPL_COMPATIBLE], [1], | |
761 | [Define to 1 if GPL-only symbols can be used]) | |
762 | ], [ | |
763 | ]) | |
0408008b ED |
764 | ]) |
765 | ||
57d86234 | 766 | dnl # |
d04c8a56 BB |
767 | dnl # Use the atomic implemenation based on global spinlocks. This |
768 | dnl # should only be needed by 32-bit kernels which do not provide | |
769 | dnl # the atomic64_* API. It may be optionally enabled as a fallback | |
770 | dnl # if problems are observed with the direct mapping to the native | |
771 | dnl # Linux atomic operations. You may not disable atomic spinlocks | |
772 | dnl # if you kernel does not an atomic64_* API. | |
57d86234 | 773 | dnl # |
d04c8a56 BB |
774 | AC_DEFUN([SPL_AC_ATOMIC_SPINLOCK], [ |
775 | AC_ARG_ENABLE([atomic-spinlocks], | |
776 | [AS_HELP_STRING([--enable-atomic-spinlocks], | |
777 | [Atomic types use spinlocks @<:@default=check@:>@])], | |
778 | [], | |
779 | [enable_atomic_spinlocks=check]) | |
57d86234 | 780 | |
a0f6da3d | 781 | SPL_LINUX_TRY_COMPILE([ |
dd3678fc | 782 | #include <linux/fs.h> |
a0f6da3d | 783 | ],[ |
03318641 | 784 | atomic64_t *ptr __attribute__ ((unused)); |
a0f6da3d | 785 | ],[ |
d04c8a56 | 786 | have_atomic64_t=yes |
a0f6da3d | 787 | AC_DEFINE(HAVE_ATOMIC64_T, 1, |
d04c8a56 | 788 | [kernel defines atomic64_t]) |
a0f6da3d | 789 | ],[ |
d04c8a56 BB |
790 | have_atomic64_t=no |
791 | ]) | |
792 | ||
793 | AS_IF([test "x$enable_atomic_spinlocks" = xcheck], [ | |
794 | AS_IF([test "x$have_atomic64_t" = xyes], [ | |
795 | enable_atomic_spinlocks=no | |
796 | ],[ | |
797 | enable_atomic_spinlocks=yes | |
798 | ]) | |
a0f6da3d | 799 | ]) |
d04c8a56 BB |
800 | |
801 | AS_IF([test "x$enable_atomic_spinlocks" = xyes], [ | |
802 | AC_DEFINE([ATOMIC_SPINLOCK], [1], | |
803 | [Atomic types use spinlocks]) | |
804 | ],[ | |
805 | AS_IF([test "x$have_atomic64_t" = xno], [ | |
806 | AC_MSG_FAILURE( | |
807 | [--disable-atomic-spinlocks given but required atomic64 support is unavailable]) | |
808 | ]) | |
809 | ]) | |
810 | ||
811 | AC_MSG_CHECKING([whether atomic types use spinlocks]) | |
812 | AC_MSG_RESULT([$enable_atomic_spinlocks]) | |
813 | ||
814 | AC_MSG_CHECKING([whether kernel defines atomic64_t]) | |
815 | AC_MSG_RESULT([$have_atomic64_t]) | |
a0f6da3d | 816 | ]) |
817 | ||
302b88e6 BB |
818 | dnl # |
819 | dnl # 2.6.24 API change, | |
820 | dnl # check if atomic64_cmpxchg is defined | |
821 | dnl # | |
822 | AC_DEFUN([SPL_AC_TYPE_ATOMIC64_CMPXCHG], | |
823 | [AC_MSG_CHECKING([whether kernel defines atomic64_cmpxchg]) | |
824 | SPL_LINUX_TRY_COMPILE([ | |
dd3678fc | 825 | #include <linux/fs.h> |
302b88e6 BB |
826 | ],[ |
827 | atomic64_cmpxchg((atomic64_t *)NULL, 0, 0); | |
828 | ],[ | |
829 | AC_MSG_RESULT([yes]) | |
830 | AC_DEFINE(HAVE_ATOMIC64_CMPXCHG, 1, | |
831 | [kernel defines atomic64_cmpxchg]) | |
832 | ],[ | |
833 | AC_MSG_RESULT([no]) | |
834 | ]) | |
835 | ]) | |
836 | ||
837 | dnl # | |
838 | dnl # 2.6.24 API change, | |
839 | dnl # check if atomic64_xchg is defined | |
840 | dnl # | |
841 | AC_DEFUN([SPL_AC_TYPE_ATOMIC64_XCHG], | |
842 | [AC_MSG_CHECKING([whether kernel defines atomic64_xchg]) | |
843 | SPL_LINUX_TRY_COMPILE([ | |
dd3678fc | 844 | #include <linux/fs.h> |
302b88e6 BB |
845 | ],[ |
846 | atomic64_xchg((atomic64_t *)NULL, 0); | |
847 | ],[ | |
848 | AC_MSG_RESULT([yes]) | |
849 | AC_DEFINE(HAVE_ATOMIC64_XCHG, 1, | |
850 | [kernel defines atomic64_xchg]) | |
851 | ],[ | |
852 | AC_MSG_RESULT([no]) | |
853 | ]) | |
854 | ]) | |
855 | ||
d04c8a56 BB |
856 | dnl # |
857 | dnl # 2.6.24 API change, | |
858 | dnl # check if uintptr_t typedef is defined | |
859 | dnl # | |
860 | AC_DEFUN([SPL_AC_TYPE_UINTPTR_T], | |
861 | [AC_MSG_CHECKING([whether kernel defines uintptr_t]) | |
862 | SPL_LINUX_TRY_COMPILE([ | |
863 | #include <linux/types.h> | |
864 | ],[ | |
03318641 | 865 | uintptr_t *ptr __attribute__ ((unused)); |
d04c8a56 BB |
866 | ],[ |
867 | AC_MSG_RESULT([yes]) | |
868 | AC_DEFINE(HAVE_UINTPTR_T, 1, | |
869 | [kernel defines uintptr_t]) | |
870 | ],[ | |
871 | AC_MSG_RESULT([no]) | |
872 | ]) | |
873 | ]) | |
874 | ||
57d86234 | 875 | dnl # |
3d061e9d | 876 | dnl # 2.6.21 API change, |
57d86234 | 877 | dnl # 'register_sysctl_table' use only one argument instead of two |
878 | dnl # | |
879 | AC_DEFUN([SPL_AC_2ARGS_REGISTER_SYSCTL], | |
880 | [AC_MSG_CHECKING([whether register_sysctl_table() wants 2 args]) | |
881 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 882 | #include <linux/sysctl.h> |
57d86234 | 883 | ],[ |
03318641 | 884 | (void) register_sysctl_table(NULL, 0); |
57d86234 | 885 | ],[ |
d50bd9e2 | 886 | AC_MSG_RESULT(yes) |
887 | AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1, | |
888 | [register_sysctl_table() wants 2 args]) | |
57d86234 | 889 | ],[ |
d50bd9e2 | 890 | AC_MSG_RESULT(no) |
57d86234 | 891 | ]) |
892 | ]) | |
893 | ||
c3d9c0df | 894 | AC_DEFUN([SPL_AC_SHRINKER_CALLBACK],[ |
23aa63cb BB |
895 | tmp_flags="$EXTRA_KCFLAGS" |
896 | EXTRA_KCFLAGS="-Werror" | |
c3d9c0df RY |
897 | dnl # |
898 | dnl # 2.6.23 to 2.6.34 API change | |
899 | dnl # ->shrink(int nr_to_scan, gfp_t gfp_mask) | |
900 | dnl # | |
901 | AC_MSG_CHECKING([whether old 2-argument shrinker exists]) | |
23aa63cb BB |
902 | SPL_LINUX_TRY_COMPILE([ |
903 | #include <linux/mm.h> | |
904 | ||
c3d9c0df | 905 | int shrinker_cb(int nr_to_scan, gfp_t gfp_mask); |
23aa63cb BB |
906 | ],[ |
907 | struct shrinker cache_shrinker = { | |
908 | .shrink = shrinker_cb, | |
909 | .seeks = DEFAULT_SEEKS, | |
910 | }; | |
911 | register_shrinker(&cache_shrinker); | |
912 | ],[ | |
913 | AC_MSG_RESULT(yes) | |
c3d9c0df RY |
914 | AC_DEFINE(HAVE_2ARGS_OLD_SHRINKER_CALLBACK, 1, |
915 | [old shrinker callback wants 2 args]) | |
23aa63cb BB |
916 | ],[ |
917 | AC_MSG_RESULT(no) | |
c3d9c0df RY |
918 | dnl # |
919 | dnl # 2.6.35 - 2.6.39 API change | |
920 | dnl # ->shrink(struct shrinker *, | |
921 | dnl # int nr_to_scan, gfp_t gfp_mask) | |
922 | dnl # | |
923 | AC_MSG_CHECKING([whether old 3-argument shrinker exists]) | |
924 | SPL_LINUX_TRY_COMPILE([ | |
925 | #include <linux/mm.h> | |
926 | ||
927 | int shrinker_cb(struct shrinker *, int nr_to_scan, | |
928 | gfp_t gfp_mask); | |
929 | ],[ | |
930 | struct shrinker cache_shrinker = { | |
931 | .shrink = shrinker_cb, | |
932 | .seeks = DEFAULT_SEEKS, | |
933 | }; | |
934 | register_shrinker(&cache_shrinker); | |
935 | ],[ | |
936 | AC_MSG_RESULT(yes) | |
937 | AC_DEFINE(HAVE_3ARGS_SHRINKER_CALLBACK, 1, | |
938 | [old shrinker callback wants 3 args]) | |
939 | ],[ | |
940 | AC_MSG_RESULT(no) | |
941 | dnl # | |
942 | dnl # 3.0 - 3.11 API change | |
943 | dnl # ->shrink(struct shrinker *, | |
944 | dnl # struct shrink_control *sc) | |
945 | dnl # | |
946 | AC_MSG_CHECKING( | |
947 | [whether new 2-argument shrinker exists]) | |
948 | SPL_LINUX_TRY_COMPILE([ | |
949 | #include <linux/mm.h> | |
950 | ||
951 | int shrinker_cb(struct shrinker *, | |
952 | struct shrink_control *sc); | |
953 | ],[ | |
954 | struct shrinker cache_shrinker = { | |
955 | .shrink = shrinker_cb, | |
956 | .seeks = DEFAULT_SEEKS, | |
957 | }; | |
958 | register_shrinker(&cache_shrinker); | |
959 | ],[ | |
960 | AC_MSG_RESULT(yes) | |
961 | AC_DEFINE(HAVE_2ARGS_NEW_SHRINKER_CALLBACK, 1, | |
962 | [new shrinker callback wants 2 args]) | |
963 | ],[ | |
964 | AC_MSG_RESULT(no) | |
965 | dnl # | |
966 | dnl # 3.12 API change, | |
967 | dnl # ->shrink() is logically split in to | |
968 | dnl # ->count_objects() and ->scan_objects() | |
969 | dnl # | |
970 | AC_MSG_CHECKING( | |
971 | [whether ->count_objects callback exists]) | |
972 | SPL_LINUX_TRY_COMPILE([ | |
973 | #include <linux/mm.h> | |
974 | ||
975 | unsigned long shrinker_cb( | |
976 | struct shrinker *, | |
977 | struct shrink_control *sc); | |
978 | ],[ | |
979 | struct shrinker cache_shrinker = { | |
980 | .count_objects = shrinker_cb, | |
981 | .scan_objects = shrinker_cb, | |
982 | .seeks = DEFAULT_SEEKS, | |
983 | }; | |
984 | register_shrinker(&cache_shrinker); | |
985 | ],[ | |
986 | AC_MSG_RESULT(yes) | |
987 | AC_DEFINE(HAVE_SPLIT_SHRINKER_CALLBACK, | |
988 | 1, [->count_objects exists]) | |
989 | ],[ | |
990 | AC_MSG_ERROR(error) | |
991 | ]) | |
992 | ]) | |
993 | ]) | |
23aa63cb BB |
994 | ]) |
995 | EXTRA_KCFLAGS="$tmp_flags" | |
996 | ]) | |
997 | ||
57d86234 | 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 | |
6a6cafbe | 1056 | dnl # |
1057 | dnl # 2.6.26 API change, set_normalized_timespec() is exported. | |
1058 | dnl # | |
723aa3b0 ED |
1059 | AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT], |
1060 | [AC_MSG_CHECKING([whether set_normalized_timespec() is available as export]) | |
1061 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1062 | #include <linux/time.h> | |
1063 | ], [ | |
1064 | set_normalized_timespec(NULL, 0, 0); | |
1065 | ], [set_normalized_timespec], [kernel/time.c], [ | |
1066 | AC_MSG_RESULT(yes) | |
1067 | AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT, 1, | |
1068 | [set_normalized_timespec() is available as export]) | |
1069 | ], [ | |
1070 | AC_MSG_RESULT(no) | |
1071 | ]) | |
6a6cafbe | 1072 | ]) |
1073 | ||
1074 | dnl # | |
1075 | dnl # 2.6.16 API change, set_normalize_timespec() moved to time.c | |
1076 | dnl # previously it was available in time.h as an inline. | |
1077 | dnl # | |
86de8532 | 1078 | AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE], [ |
1079 | AC_MSG_CHECKING([whether set_normalized_timespec() is an inline]) | |
6a6cafbe | 1080 | SPL_LINUX_TRY_COMPILE([ |
1081 | #include <linux/time.h> | |
6a6cafbe | 1082 | void set_normalized_timespec(struct timespec *ts, |
25557fd8 | 1083 | time_t sec, long nsec) { } |
1084 | ], | |
1085 | [], | |
1086 | [ | |
6a6cafbe | 1087 | AC_MSG_RESULT(no) |
1088 | ],[ | |
1089 | AC_MSG_RESULT(yes) | |
1090 | AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_INLINE, 1, | |
1091 | [set_normalized_timespec() is available as inline]) | |
1092 | ]) | |
1093 | ]) | |
1094 | ||
1095 | dnl # | |
1096 | dnl # 2.6.18 API change, | |
1097 | dnl # timespec_sub() inline function available in linux/time.h | |
1098 | dnl # | |
86de8532 | 1099 | AC_DEFUN([SPL_AC_TIMESPEC_SUB], [ |
1100 | AC_MSG_CHECKING([whether timespec_sub() is available]) | |
6a6cafbe | 1101 | SPL_LINUX_TRY_COMPILE([ |
1102 | #include <linux/time.h> | |
1103 | ],[ | |
03318641 BB |
1104 | struct timespec a = { 0 }; |
1105 | struct timespec b = { 0 }; | |
1106 | struct timespec c __attribute__ ((unused)); | |
6a6cafbe | 1107 | c = timespec_sub(a, b); |
1108 | ],[ | |
1109 | AC_MSG_RESULT(yes) | |
1110 | AC_DEFINE(HAVE_TIMESPEC_SUB, 1, [timespec_sub() is available]) | |
1111 | ],[ | |
1112 | AC_MSG_RESULT(no) | |
1113 | ]) | |
1114 | ]) | |
1115 | ||
3d061e9d | 1116 | dnl # |
1117 | dnl # 2.6.18 API change, | |
1118 | dnl # added linux/uaccess.h | |
322640b7 | 1119 | dnl # |
1120 | AC_DEFUN([SPL_AC_UACCESS_HEADER], [ | |
1121 | SPL_CHECK_HEADER([linux/uaccess.h], [UACCESS], [], []) | |
1122 | ]) | |
3d061e9d | 1123 | |
1124 | dnl # | |
1125 | dnl # 2.6.12 API change, | |
1126 | dnl # check whether 'kmalloc_node()' is available. | |
1127 | dnl # | |
1128 | AC_DEFUN([SPL_AC_KMALLOC_NODE], [ | |
1129 | AC_MSG_CHECKING([whether kmalloc_node() is available]) | |
1130 | SPL_LINUX_TRY_COMPILE([ | |
1131 | #include <linux/slab.h> | |
1132 | ],[ | |
03318641 BB |
1133 | void *a __attribute__ ((unused)); |
1134 | a = kmalloc_node(1, GFP_KERNEL, 0); | |
3d061e9d | 1135 | ],[ |
1136 | AC_MSG_RESULT(yes) | |
1137 | AC_DEFINE(HAVE_KMALLOC_NODE, 1, [kmalloc_node() is available]) | |
1138 | ],[ | |
1139 | AC_MSG_RESULT(no) | |
1140 | ]) | |
1141 | ]) | |
1142 | ||
1143 | dnl # | |
1144 | dnl # 2.6.9 API change, | |
1145 | dnl # check whether 'monotonic_clock()' is available it may | |
1146 | dnl # be available for some archs but not others. | |
1147 | dnl # | |
723aa3b0 ED |
1148 | AC_DEFUN([SPL_AC_MONOTONIC_CLOCK], |
1149 | [AC_MSG_CHECKING([whether monotonic_clock() is available]) | |
1150 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1151 | #include <linux/timex.h> | |
1152 | ], [ | |
1153 | monotonic_clock(); | |
1154 | ], [monotonic_clock], [], [ | |
1155 | AC_MSG_RESULT(yes) | |
1156 | AC_DEFINE(HAVE_MONOTONIC_CLOCK, 1, | |
1157 | [monotonic_clock() is available]) | |
1158 | ], [ | |
1159 | AC_MSG_RESULT(no) | |
1160 | ]) | |
3d061e9d | 1161 | ]) |
1162 | ||
1163 | dnl # | |
1164 | dnl # 2.6.16 API change, | |
1165 | dnl # check whether 'struct inode' has i_mutex | |
1166 | dnl # | |
1167 | AC_DEFUN([SPL_AC_INODE_I_MUTEX], [ | |
1168 | AC_MSG_CHECKING([whether struct inode has i_mutex]) | |
1169 | SPL_LINUX_TRY_COMPILE([ | |
1170 | #include <linux/fs.h> | |
1171 | #include <linux/mutex.h> | |
1172 | ],[ | |
1173 | struct inode i; | |
1174 | mutex_init(&i.i_mutex); | |
1175 | ],[ | |
1176 | AC_MSG_RESULT(yes) | |
1177 | AC_DEFINE(HAVE_INODE_I_MUTEX, 1, [struct inode has i_mutex]) | |
1178 | ],[ | |
1179 | AC_MSG_RESULT(no) | |
1180 | ]) | |
1181 | ]) | |
b61a6e8b | 1182 | |
4d54fdee BB |
1183 | dnl # |
1184 | dnl # 2.6.29 API change, | |
a80d69ca BB |
1185 | dnl # Adaptive mutexs were introduced which track the mutex owner. The |
1186 | dnl # mutex wrappers leverage this functionality to avoid tracking the | |
1187 | dnl # owner multipe times. | |
4d54fdee BB |
1188 | dnl # |
1189 | AC_DEFUN([SPL_AC_MUTEX_OWNER], [ | |
1190 | AC_MSG_CHECKING([whether struct mutex has owner]) | |
1191 | SPL_LINUX_TRY_COMPILE([ | |
1192 | #include <linux/mutex.h> | |
1193 | ],[ | |
03318641 | 1194 | struct mutex mtx __attribute__ ((unused)); |
4d54fdee BB |
1195 | mtx.owner = NULL; |
1196 | ],[ | |
1197 | AC_MSG_RESULT(yes) | |
1198 | AC_DEFINE(HAVE_MUTEX_OWNER, 1, [struct mutex has owner]) | |
1199 | ],[ | |
1200 | AC_MSG_RESULT(no) | |
1201 | ]) | |
1202 | ]) | |
1203 | ||
86fd39f3 BB |
1204 | dnl # |
1205 | dnl # 2.6.39 API change, | |
1206 | dnl # Owner type change. A Linux mutex prior to 2.6.39 would store | |
1207 | dnl # the owner as a thread_info pointer when CONFIG_DEBUG_MUTEXES | |
1208 | dnl # was defined. As of 2.6.39 this was changed to a task_struct | |
1209 | dnl # pointer which frankly makes a lot more sense. | |
1210 | dnl # | |
1211 | AC_DEFUN([SPL_AC_MUTEX_OWNER_TASK_STRUCT], [ | |
1212 | AC_MSG_CHECKING([whether struct mutex owner is a task_struct]) | |
1213 | tmp_flags="$EXTRA_KCFLAGS" | |
1214 | EXTRA_KCFLAGS="-Werror" | |
1215 | SPL_LINUX_TRY_COMPILE([ | |
1216 | #include <linux/mutex.h> | |
a0625691 | 1217 | #include <linux/sched.h> |
86fd39f3 BB |
1218 | ],[ |
1219 | struct mutex mtx __attribute__ ((unused)); | |
1220 | mtx.owner = current; | |
1221 | ],[ | |
1222 | AC_MSG_RESULT(yes) | |
1223 | AC_DEFINE(HAVE_MUTEX_OWNER_TASK_STRUCT, 1, | |
1224 | [struct mutex owner is a task_struct]) | |
1225 | ],[ | |
1226 | AC_MSG_RESULT(no) | |
1227 | ]) | |
1228 | EXTRA_KCFLAGS="$tmp_flags" | |
1229 | ]) | |
1230 | ||
6c9433c1 BB |
1231 | dnl # |
1232 | dnl # 2.6.18 API change, | |
1233 | dnl # First introduced 'mutex_lock_nested()' in include/linux/mutex.h, | |
1234 | dnl # as part of the mutex validator. Fallback to using 'mutex_lock()' | |
1235 | dnl # if the mutex validator is disabled or otherwise unavailable. | |
1236 | dnl # | |
1237 | AC_DEFUN([SPL_AC_MUTEX_LOCK_NESTED], [ | |
1238 | AC_MSG_CHECKING([whether mutex_lock_nested() is available]) | |
1239 | SPL_LINUX_TRY_COMPILE([ | |
1240 | #include <linux/mutex.h> | |
1241 | ],[ | |
1242 | struct mutex mutex; | |
1243 | mutex_init(&mutex); | |
1244 | mutex_lock_nested(&mutex, 0); | |
1245 | ],[ | |
1246 | AC_MSG_RESULT(yes) | |
1247 | AC_DEFINE(HAVE_MUTEX_LOCK_NESTED, 1, | |
1248 | [mutex_lock_nested() is available]) | |
1249 | ],[ | |
1250 | AC_MSG_RESULT(no) | |
1251 | ]) | |
1252 | ]) | |
1253 | ||
31a033ec BB |
1254 | dnl # |
1255 | dnl # 2.6.27 API change, | |
1256 | dnl # on_each_cpu() uses 3 args, no 'retry' argument | |
1257 | dnl # | |
1258 | AC_DEFUN([SPL_AC_3ARGS_ON_EACH_CPU], [ | |
1259 | AC_MSG_CHECKING([whether on_each_cpu() wants 3 args]) | |
1260 | SPL_LINUX_TRY_COMPILE([ | |
050cd84e | 1261 | #include <linux/interrupt.h> |
31a033ec | 1262 | #include <linux/smp.h> |
050cd84e BB |
1263 | |
1264 | void on_each_cpu_func(void *data) { return; } | |
31a033ec | 1265 | ],[ |
050cd84e | 1266 | on_each_cpu(on_each_cpu_func, NULL, 0); |
31a033ec BB |
1267 | ],[ |
1268 | AC_MSG_RESULT(yes) | |
1269 | AC_DEFINE(HAVE_3ARGS_ON_EACH_CPU, 1, | |
1270 | [on_each_cpu wants 3 args]) | |
1271 | ],[ | |
1272 | AC_MSG_RESULT(no) | |
1273 | ]) | |
1274 | ]) | |
36b313da BB |
1275 | |
1276 | dnl # | |
d1ff2312 BB |
1277 | dnl # 2.6.18 API change, |
1278 | dnl # kallsyms_lookup_name no longer exported | |
1279 | dnl # | |
723aa3b0 ED |
1280 | AC_DEFUN([SPL_AC_KALLSYMS_LOOKUP_NAME], |
1281 | [AC_MSG_CHECKING([whether kallsyms_lookup_name() is available]) | |
1282 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1283 | #include <linux/kallsyms.h> | |
1284 | ], [ | |
1285 | kallsyms_lookup_name(NULL); | |
1286 | ], [kallsyms_lookup_name], [], [ | |
1287 | AC_MSG_RESULT(yes) | |
1288 | AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1, | |
1289 | [kallsyms_lookup_name() is available]) | |
1290 | ], [ | |
1291 | AC_MSG_RESULT(no) | |
1292 | ]) | |
d1ff2312 BB |
1293 | ]) |
1294 | ||
1295 | dnl # | |
e11d6c5f BB |
1296 | dnl # Proposed API change, |
1297 | dnl # This symbol is not available in stock kernels. You may build a | |
1298 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1299 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1300 | dnl # your environment this is recommended. | |
d1ff2312 | 1301 | dnl # |
723aa3b0 ED |
1302 | AC_DEFUN([SPL_AC_GET_VMALLOC_INFO], |
1303 | [AC_MSG_CHECKING([whether get_vmalloc_info() is available]) | |
1304 | SPL_CHECK_SYMBOL_EXPORT([get_vmalloc_info], [], [ | |
1305 | AC_MSG_RESULT(yes) | |
1306 | AC_DEFINE(HAVE_GET_VMALLOC_INFO, 1, | |
1307 | [get_vmalloc_info() is available]) | |
1308 | ], [ | |
1309 | AC_MSG_RESULT(no) | |
1310 | ]) | |
d1ff2312 BB |
1311 | ]) |
1312 | ||
c02ab72f YS |
1313 | dnl # |
1314 | dnl # 3.10 API change, | |
1315 | dnl # struct vmalloc_info is now declared in linux/vmalloc.h | |
1316 | dnl # | |
1317 | AC_DEFUN([SPL_AC_VMALLOC_INFO], [ | |
1318 | AC_MSG_CHECKING([whether struct vmalloc_info is declared]) | |
1319 | SPL_LINUX_TRY_COMPILE([ | |
1320 | #include <linux/vmalloc.h> | |
1321 | struct vmalloc_info { void *a; }; | |
1322 | ],[ | |
1323 | return 0; | |
1324 | ],[ | |
1325 | AC_MSG_RESULT(no) | |
1326 | ],[ | |
1327 | AC_MSG_RESULT(yes) | |
1328 | AC_DEFINE(HAVE_VMALLOC_INFO, 1, [yes]) | |
1329 | ]) | |
1330 | ]) | |
1331 | ||
1ddf9722 YS |
1332 | dnl # |
1333 | dnl # 3.10 API change, | |
1334 | dnl # PDE is replaced by PDE_DATA | |
1335 | dnl # | |
1336 | AC_DEFUN([SPL_AC_PDE_DATA], [ | |
1337 | AC_MSG_CHECKING([whether PDE_DATA() is available]) | |
1338 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1339 | #include <linux/proc_fs.h> | |
1340 | ], [ | |
1341 | PDE_DATA(NULL); | |
1342 | ], [PDE_DATA], [], [ | |
1343 | AC_MSG_RESULT(yes) | |
1344 | AC_DEFINE(HAVE_PDE_DATA, 1, [yes]) | |
1345 | ],[ | |
1346 | AC_MSG_RESULT(no) | |
1347 | ]) | |
1348 | ]) | |
1349 | ||
5232d256 BB |
1350 | dnl # |
1351 | dnl # 2.6.17 API change | |
1352 | dnl # The helper functions first_online_pgdat(), next_online_pgdat(), and | |
1353 | dnl # next_zone() are introduced to simplify for_each_zone(). These symbols | |
1354 | dnl # were exported in 2.6.17 for use by modules which was consistent with | |
1355 | dnl # the previous implementation of for_each_zone(). From 2.6.18 - 2.6.19 | |
1356 | dnl # the symbols were exported as 'unused', and by 2.6.20 they exports | |
1357 | dnl # were dropped entirely leaving modules no way to directly iterate over | |
1358 | dnl # the zone list. Because we need access to the zone helpers we check | |
1359 | dnl # if the kernel contains the old or new implementation. Then we check | |
1360 | dnl # to see if the symbols we need for each version are available. If they | |
1361 | dnl # are not, dynamically aquire the addresses with kallsyms_lookup_name(). | |
1362 | dnl # | |
1363 | AC_DEFUN([SPL_AC_PGDAT_HELPERS], [ | |
1364 | AC_MSG_CHECKING([whether symbol *_pgdat exist]) | |
1365 | grep -q -E 'first_online_pgdat' $LINUX/include/linux/mmzone.h 2>/dev/null | |
1366 | rc=$? | |
1367 | if test $rc -eq 0; then | |
1368 | AC_MSG_RESULT([yes]) | |
723aa3b0 | 1369 | AC_DEFINE(HAVE_PGDAT_HELPERS, 1, [pgdat helpers are available]) |
5232d256 BB |
1370 | else |
1371 | AC_MSG_RESULT([no]) | |
1372 | fi | |
1373 | ]) | |
1374 | ||
d1ff2312 | 1375 | dnl # |
e11d6c5f BB |
1376 | dnl # Proposed API change, |
1377 | dnl # This symbol is not available in stock kernels. You may build a | |
1378 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1379 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1380 | dnl # your environment this is recommended. | |
36b313da | 1381 | dnl # |
723aa3b0 ED |
1382 | AC_DEFUN([SPL_AC_FIRST_ONLINE_PGDAT], |
1383 | [AC_MSG_CHECKING([whether first_online_pgdat() is available]) | |
1384 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1385 | #include <linux/mmzone.h> | |
1386 | ], [ | |
1387 | first_online_pgdat(); | |
1388 | ], [first_online_pgdat], [], [ | |
1389 | AC_MSG_RESULT(yes) | |
1390 | AC_DEFINE(HAVE_FIRST_ONLINE_PGDAT, 1, | |
1391 | [first_online_pgdat() is available]) | |
1392 | ], [ | |
1393 | AC_MSG_RESULT(no) | |
1394 | ]) | |
36b313da BB |
1395 | ]) |
1396 | ||
1397 | dnl # | |
e11d6c5f BB |
1398 | dnl # Proposed API change, |
1399 | dnl # This symbol is not available in stock kernels. You may build a | |
1400 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1401 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1402 | dnl # your environment this is recommended. | |
36b313da | 1403 | dnl # |
723aa3b0 ED |
1404 | AC_DEFUN([SPL_AC_NEXT_ONLINE_PGDAT], |
1405 | [AC_MSG_CHECKING([whether next_online_pgdat() is available]) | |
1406 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1407 | #include <linux/mmzone.h> | |
1408 | ], [ | |
1409 | next_online_pgdat(NULL); | |
1410 | ], [next_online_pgdat], [], [ | |
1411 | AC_MSG_RESULT(yes) | |
1412 | AC_DEFINE(HAVE_NEXT_ONLINE_PGDAT, 1, | |
1413 | [next_online_pgdat() is available]) | |
1414 | ], [ | |
1415 | AC_MSG_RESULT(no) | |
1416 | ]) | |
36b313da BB |
1417 | ]) |
1418 | ||
1419 | dnl # | |
e11d6c5f BB |
1420 | dnl # Proposed API change, |
1421 | dnl # This symbol is not available in stock kernels. You may build a | |
1422 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1423 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1424 | dnl # your environment this is recommended. | |
36b313da | 1425 | dnl # |
723aa3b0 ED |
1426 | AC_DEFUN([SPL_AC_NEXT_ZONE], |
1427 | [AC_MSG_CHECKING([whether next_zone() is available]) | |
1428 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1429 | #include <linux/mmzone.h> | |
1430 | ], [ | |
1431 | next_zone(NULL); | |
1432 | ], [next_zone], [], [ | |
1433 | AC_MSG_RESULT(yes) | |
1434 | AC_DEFINE(HAVE_NEXT_ZONE, 1, [next_zone() is available]) | |
1435 | ], [ | |
1436 | AC_MSG_RESULT(no) | |
1437 | ]) | |
36b313da | 1438 | ]) |
4ab13d3b | 1439 | |
5232d256 BB |
1440 | dnl # |
1441 | dnl # 2.6.17 API change, | |
1442 | dnl # See SPL_AC_PGDAT_HELPERS for details. | |
1443 | dnl # | |
723aa3b0 ED |
1444 | AC_DEFUN([SPL_AC_PGDAT_LIST], |
1445 | [AC_MSG_CHECKING([whether pgdat_list is available]) | |
1446 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1447 | #include <linux/topology.h> | |
1448 | pg_data_t *tmp = pgdat_list; | |
1449 | ], [], [pgdat_list], [], [ | |
1450 | AC_MSG_RESULT(yes) | |
1451 | AC_DEFINE(HAVE_PGDAT_LIST, 1, [pgdat_list is available]) | |
1452 | ], [ | |
1453 | AC_MSG_RESULT(no) | |
1454 | ]) | |
5232d256 BB |
1455 | ]) |
1456 | ||
96dded38 BB |
1457 | dnl # |
1458 | dnl # 2.6.18 API change, | |
1459 | dnl # First introduced global_page_state() support as an inline. | |
1460 | dnl # | |
1461 | AC_DEFUN([SPL_AC_GLOBAL_PAGE_STATE], [ | |
1462 | AC_MSG_CHECKING([whether global_page_state() is available]) | |
1463 | SPL_LINUX_TRY_COMPILE([ | |
6ae7fef5 | 1464 | #include <linux/mm.h> |
96dded38 | 1465 | ],[ |
03318641 | 1466 | unsigned long state __attribute__ ((unused)); |
6ae7fef5 | 1467 | state = global_page_state(0); |
96dded38 BB |
1468 | ],[ |
1469 | AC_MSG_RESULT(yes) | |
1470 | AC_DEFINE(HAVE_GLOBAL_PAGE_STATE, 1, | |
1471 | [global_page_state() is available]) | |
1472 | ],[ | |
1473 | AC_MSG_RESULT(no) | |
1474 | ]) | |
1475 | ]) | |
1476 | ||
e11d6c5f | 1477 | dnl # |
6ae7fef5 BB |
1478 | dnl # 2.6.21 API change (plus subsequent naming convention changes), |
1479 | dnl # Public global zone stats now include a free page count. However | |
1480 | dnl # the enumerated names of the counters have changed since this API | |
1481 | dnl # was introduced. We need to deduce the corrent name to use. This | |
1482 | dnl # replaces the priviate get_zone_counts() interface. | |
1483 | dnl # | |
1484 | dnl # NR_FREE_PAGES was available from 2.6.21 to current kernels, which | |
1485 | dnl # is 2.6.30 as of when this was written. | |
e11d6c5f | 1486 | dnl # |
6ae7fef5 BB |
1487 | AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_FREE], [ |
1488 | AC_MSG_CHECKING([whether page state NR_FREE_PAGES is available]) | |
e11d6c5f | 1489 | SPL_LINUX_TRY_COMPILE([ |
6ae7fef5 | 1490 | #include <linux/mm.h> |
e11d6c5f | 1491 | ],[ |
03318641 | 1492 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 | 1493 | zsi = NR_FREE_PAGES; |
e11d6c5f BB |
1494 | ],[ |
1495 | AC_MSG_RESULT(yes) | |
6ae7fef5 BB |
1496 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES, 1, |
1497 | [Page state NR_FREE_PAGES is available]) | |
e11d6c5f BB |
1498 | ],[ |
1499 | AC_MSG_RESULT(no) | |
1500 | ]) | |
1501 | ]) | |
a093c6a4 | 1502 | |
6ae7fef5 BB |
1503 | dnl # |
1504 | dnl # 2.6.21 API change (plus subsequent naming convention changes), | |
1505 | dnl # Public global zone stats now include an inactive page count. However | |
1506 | dnl # the enumerated names of the counters have changed since this API | |
1507 | dnl # was introduced. We need to deduce the corrent name to use. This | |
1508 | dnl # replaces the priviate get_zone_counts() interface. | |
1509 | dnl # | |
1510 | dnl # NR_INACTIVE was available from 2.6.21 to 2.6.27 and included both | |
1511 | dnl # anonymous and file inactive pages. As of 2.6.28 it was split in | |
1512 | dnl # to NR_INACTIVE_ANON and NR_INACTIVE_FILE. | |
1513 | dnl # | |
1514 | AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_INACTIVE], [ | |
1515 | AC_MSG_CHECKING([whether page state NR_INACTIVE is available]) | |
1516 | SPL_LINUX_TRY_COMPILE([ | |
1517 | #include <linux/mm.h> | |
1518 | ],[ | |
03318641 | 1519 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 BB |
1520 | zsi = NR_INACTIVE; |
1521 | ],[ | |
1522 | AC_MSG_RESULT(yes) | |
1523 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE, 1, | |
1524 | [Page state NR_INACTIVE is available]) | |
1525 | ],[ | |
1526 | AC_MSG_RESULT(no) | |
1527 | ]) | |
1528 | ||
1529 | AC_MSG_CHECKING([whether page state NR_INACTIVE_ANON is available]) | |
1530 | SPL_LINUX_TRY_COMPILE([ | |
1531 | #include <linux/mm.h> | |
1532 | ],[ | |
03318641 | 1533 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 BB |
1534 | zsi = NR_INACTIVE_ANON; |
1535 | ],[ | |
1536 | AC_MSG_RESULT(yes) | |
1537 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON, 1, | |
1538 | [Page state NR_INACTIVE_ANON is available]) | |
1539 | ],[ | |
1540 | AC_MSG_RESULT(no) | |
1541 | ]) | |
1542 | ||
1543 | AC_MSG_CHECKING([whether page state NR_INACTIVE_FILE is available]) | |
1544 | SPL_LINUX_TRY_COMPILE([ | |
1545 | #include <linux/mm.h> | |
1546 | ],[ | |
03318641 | 1547 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 BB |
1548 | zsi = NR_INACTIVE_FILE; |
1549 | ],[ | |
1550 | AC_MSG_RESULT(yes) | |
1551 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE, 1, | |
1552 | [Page state NR_INACTIVE_FILE is available]) | |
1553 | ],[ | |
1554 | AC_MSG_RESULT(no) | |
1555 | ]) | |
1556 | ]) | |
1557 | ||
1558 | dnl # | |
1559 | dnl # 2.6.21 API change (plus subsequent naming convention changes), | |
1560 | dnl # Public global zone stats now include an active page count. However | |
1561 | dnl # the enumerated names of the counters have changed since this API | |
1562 | dnl # was introduced. We need to deduce the corrent name to use. This | |
1563 | dnl # replaces the priviate get_zone_counts() interface. | |
1564 | dnl # | |
1565 | dnl # NR_ACTIVE was available from 2.6.21 to 2.6.27 and included both | |
1566 | dnl # anonymous and file active pages. As of 2.6.28 it was split in | |
1567 | dnl # to NR_ACTIVE_ANON and NR_ACTIVE_FILE. | |
1568 | dnl # | |
1569 | AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_ACTIVE], [ | |
1570 | AC_MSG_CHECKING([whether page state NR_ACTIVE is available]) | |
1571 | SPL_LINUX_TRY_COMPILE([ | |
1572 | #include <linux/mm.h> | |
1573 | ],[ | |
03318641 | 1574 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 BB |
1575 | zsi = NR_ACTIVE; |
1576 | ],[ | |
1577 | AC_MSG_RESULT(yes) | |
1578 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE, 1, | |
1579 | [Page state NR_ACTIVE is available]) | |
1580 | ],[ | |
1581 | AC_MSG_RESULT(no) | |
1582 | ]) | |
1583 | ||
1584 | AC_MSG_CHECKING([whether page state NR_ACTIVE_ANON is available]) | |
1585 | SPL_LINUX_TRY_COMPILE([ | |
1586 | #include <linux/mm.h> | |
1587 | ],[ | |
03318641 | 1588 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 BB |
1589 | zsi = NR_ACTIVE_ANON; |
1590 | ],[ | |
1591 | AC_MSG_RESULT(yes) | |
1592 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON, 1, | |
1593 | [Page state NR_ACTIVE_ANON is available]) | |
1594 | ],[ | |
1595 | AC_MSG_RESULT(no) | |
1596 | ]) | |
1597 | ||
1598 | AC_MSG_CHECKING([whether page state NR_ACTIVE_FILE is available]) | |
1599 | SPL_LINUX_TRY_COMPILE([ | |
1600 | #include <linux/mm.h> | |
1601 | ],[ | |
03318641 | 1602 | enum zone_stat_item zsi __attribute__ ((unused)); |
6ae7fef5 BB |
1603 | zsi = NR_ACTIVE_FILE; |
1604 | ],[ | |
1605 | AC_MSG_RESULT(yes) | |
1606 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE, 1, | |
1607 | [Page state NR_ACTIVE_FILE is available]) | |
1608 | ],[ | |
1609 | AC_MSG_RESULT(no) | |
1610 | ]) | |
1611 | ]) | |
1612 | ||
1613 | dnl # | |
1614 | dnl # Proposed API change for legacy kernels. | |
1615 | dnl # This symbol is not available in older kernels. For kernels post | |
1616 | dnl # 2.6.21 the global_page_state() API is used to get free/inactive/active | |
1617 | dnl # page state information. This symbol is only used in legacy kernels | |
1618 | dnl # any only as a last resort. | |
1619 | dnl | |
1620 | AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [ | |
1621 | AC_MSG_CHECKING([whether symbol get_zone_counts is needed]) | |
1622 | SPL_LINUX_TRY_COMPILE([ | |
1623 | ],[ | |
1624 | #if !defined(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES) | |
1625 | #error "global_page_state needs NR_FREE_PAGES" | |
1626 | #endif | |
1627 | ||
1628 | #if !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE) && \ | |
1629 | !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON) && \ | |
1630 | !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE) | |
1631 | #error "global_page_state needs NR_ACTIVE*" | |
1632 | #endif | |
1633 | ||
1634 | #if !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE) && \ | |
1635 | !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON) && \ | |
1636 | !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE) | |
1637 | #error "global_page_state needs NR_INACTIVE*" | |
1638 | #endif | |
1639 | ],[ | |
1640 | AC_MSG_RESULT(no) | |
1641 | ],[ | |
1642 | AC_MSG_RESULT(yes) | |
1643 | AC_DEFINE(NEED_GET_ZONE_COUNTS, 1, | |
1644 | [get_zone_counts() is needed]) | |
1645 | ||
723aa3b0 ED |
1646 | AC_MSG_CHECKING([whether get_zone_counts() is available]) |
1647 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1648 | #include <linux/mmzone.h> | |
1649 | ], [ | |
1650 | get_zone_counts(NULL, NULL, NULL); | |
1651 | ], [get_zone_counts], [], [ | |
1652 | AC_MSG_RESULT(yes) | |
1653 | AC_DEFINE(HAVE_GET_ZONE_COUNTS, 1, | |
1654 | [get_zone_counts() is available]) | |
1655 | ], [ | |
1656 | AC_MSG_RESULT(no) | |
1657 | ]) | |
6ae7fef5 BB |
1658 | ]) |
1659 | ]) | |
1660 | ||
7119bf70 BB |
1661 | dnl # |
1662 | dnl # 2.6.27 API change, | |
1663 | dnl # The user_path_dir() replaces __user_walk() | |
1664 | dnl # | |
723aa3b0 ED |
1665 | AC_DEFUN([SPL_AC_USER_PATH_DIR], |
1666 | [AC_MSG_CHECKING([whether user_path_dir() is available]) | |
1667 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1668 | #include <linux/fcntl.h> | |
1669 | #include <linux/namei.h> | |
1670 | ], [ | |
1671 | user_path_dir(NULL, NULL); | |
1672 | ], [user_path_at], [], [ | |
1673 | AC_MSG_RESULT(yes) | |
1674 | AC_DEFINE(HAVE_USER_PATH_DIR, 1, [user_path_dir() is available]) | |
1675 | ], [ | |
1676 | AC_MSG_RESULT(no) | |
1677 | ]) | |
7119bf70 BB |
1678 | ]) |
1679 | ||
51a727e9 BB |
1680 | dnl # |
1681 | dnl # Symbol available in RHEL kernels not in stock kernels. | |
1682 | dnl # | |
723aa3b0 ED |
1683 | AC_DEFUN([SPL_AC_SET_FS_PWD], |
1684 | [AC_MSG_CHECKING([whether set_fs_pwd() is available]) | |
1685 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1686 | #include <linux/spinlock.h> | |
1687 | #include <linux/fs_struct.h> | |
1688 | ], [ | |
1689 | (void) set_fs_pwd; | |
1690 | ], [set_fs_pwd], [], [ | |
1691 | AC_MSG_RESULT(yes) | |
1692 | AC_DEFINE(HAVE_SET_FS_PWD, 1, [set_fs_pwd() is available]) | |
1693 | ], [ | |
1694 | AC_MSG_RESULT(no) | |
1695 | ]) | |
51a727e9 BB |
1696 | ]) |
1697 | ||
a54718cf RY |
1698 | dnl # |
1699 | dnl # 3.9 API change | |
1700 | dnl # set_fs_pwd takes const struct path * | |
1701 | dnl # | |
1702 | AC_DEFUN([SPL_AC_SET_FS_PWD_WITH_CONST], | |
a54718cf RY |
1703 | tmp_flags="$EXTRA_KCFLAGS" |
1704 | EXTRA_KCFLAGS="-Werror" | |
1705 | [AC_MSG_CHECKING([whether set_fs_pwd() requires const struct path *]) | |
1706 | SPL_LINUX_TRY_COMPILE([ | |
1707 | #include <linux/spinlock.h> | |
1708 | #include <linux/fs_struct.h> | |
1709 | #include <linux/path.h> | |
1710 | void (*const set_fs_pwd_func) | |
1711 | (struct fs_struct *, const struct path *) | |
1712 | = set_fs_pwd; | |
1713 | ],[ | |
1714 | return 0; | |
1715 | ],[ | |
1716 | AC_MSG_RESULT(yes) | |
1717 | AC_DEFINE(HAVE_SET_FS_PWD_WITH_CONST, 1, | |
1718 | [set_fs_pwd() needs const path *]) | |
1719 | ],[ | |
1720 | SPL_LINUX_TRY_COMPILE([ | |
1721 | #include <linux/spinlock.h> | |
1722 | #include <linux/fs_struct.h> | |
1723 | #include <linux/path.h> | |
1724 | void (*const set_fs_pwd_func) | |
1725 | (struct fs_struct *, struct path *) | |
1726 | = set_fs_pwd; | |
1727 | ],[ | |
1728 | return 0; | |
1729 | ],[ | |
1730 | AC_MSG_RESULT(no) | |
1731 | ],[ | |
1732 | AC_MSG_ERROR(unknown) | |
1733 | ]) | |
1734 | ]) | |
1735 | EXTRA_KCFLAGS="$tmp_flags" | |
a54718cf RY |
1736 | ]) |
1737 | ||
a093c6a4 BB |
1738 | AC_DEFUN([SPL_AC_2ARGS_VFS_UNLINK], |
1739 | [AC_MSG_CHECKING([whether vfs_unlink() wants 2 args]) | |
1740 | SPL_LINUX_TRY_COMPILE([ | |
1741 | #include <linux/fs.h> | |
1742 | ],[ | |
50a0749e | 1743 | vfs_unlink((struct inode *) NULL, (struct dentry *) NULL); |
a093c6a4 BB |
1744 | ],[ |
1745 | AC_MSG_RESULT(yes) | |
1746 | AC_DEFINE(HAVE_2ARGS_VFS_UNLINK, 1, | |
1747 | [vfs_unlink() wants 2 args]) | |
1748 | ],[ | |
1749 | AC_MSG_RESULT(no) | |
50a0749e RY |
1750 | dnl # |
1751 | dnl # Linux 3.13 API change | |
1752 | dnl # Added delegated inode | |
1753 | dnl # | |
1754 | AC_MSG_CHECKING([whether vfs_unlink() wants 3 args]) | |
1755 | SPL_LINUX_TRY_COMPILE([ | |
1756 | #include <linux/fs.h> | |
1757 | ],[ | |
1758 | vfs_unlink((struct inode *) NULL, | |
1759 | (struct dentry *) NULL, | |
1760 | (struct inode **) NULL); | |
1761 | ],[ | |
1762 | AC_MSG_RESULT(yes) | |
1763 | AC_DEFINE(HAVE_3ARGS_VFS_UNLINK, 1, | |
1764 | [vfs_unlink() wants 3 args]) | |
1765 | ],[ | |
1766 | AC_MSG_ERROR(no) | |
1767 | ]) | |
1768 | ||
a093c6a4 BB |
1769 | ]) |
1770 | ]) | |
1771 | ||
a093c6a4 BB |
1772 | AC_DEFUN([SPL_AC_4ARGS_VFS_RENAME], |
1773 | [AC_MSG_CHECKING([whether vfs_rename() wants 4 args]) | |
1774 | SPL_LINUX_TRY_COMPILE([ | |
1775 | #include <linux/fs.h> | |
1776 | ],[ | |
50a0749e RY |
1777 | vfs_rename((struct inode *) NULL, (struct dentry *) NULL, |
1778 | (struct inode *) NULL, (struct dentry *) NULL); | |
a093c6a4 BB |
1779 | ],[ |
1780 | AC_MSG_RESULT(yes) | |
1781 | AC_DEFINE(HAVE_4ARGS_VFS_RENAME, 1, | |
1782 | [vfs_rename() wants 4 args]) | |
1783 | ],[ | |
1784 | AC_MSG_RESULT(no) | |
50a0749e RY |
1785 | dnl # |
1786 | dnl # Linux 3.13 API change | |
1787 | dnl # Added delegated inode | |
1788 | dnl # | |
1789 | AC_MSG_CHECKING([whether vfs_rename() wants 5 args]) | |
1790 | SPL_LINUX_TRY_COMPILE([ | |
1791 | #include <linux/fs.h> | |
1792 | ],[ | |
1793 | vfs_rename((struct inode *) NULL, | |
1794 | (struct dentry *) NULL, | |
1795 | (struct inode *) NULL, | |
1796 | (struct dentry *) NULL, | |
1797 | (struct inode **) NULL); | |
1798 | ],[ | |
1799 | AC_MSG_RESULT(yes) | |
1800 | AC_DEFINE(HAVE_5ARGS_VFS_RENAME, 1, | |
1801 | [vfs_rename() wants 5 args]) | |
1802 | ],[ | |
ad3412ef CC |
1803 | AC_MSG_RESULT(no) |
1804 | dnl # | |
1805 | dnl # Linux 3.15 API change | |
1806 | dnl # Added flags | |
1807 | dnl # | |
1808 | AC_MSG_CHECKING([whether vfs_rename() wants 6 args]) | |
1809 | SPL_LINUX_TRY_COMPILE([ | |
1810 | #include <linux/fs.h> | |
1811 | ],[ | |
1812 | vfs_rename((struct inode *) NULL, | |
1813 | (struct dentry *) NULL, | |
1814 | (struct inode *) NULL, | |
1815 | (struct dentry *) NULL, | |
1816 | (struct inode **) NULL, | |
1817 | (unsigned int) 0); | |
1818 | ],[ | |
1819 | AC_MSG_RESULT(yes) | |
1820 | AC_DEFINE(HAVE_6ARGS_VFS_RENAME, 1, | |
1821 | [vfs_rename() wants 6 args]) | |
1822 | ],[ | |
1823 | AC_MSG_ERROR(no) | |
1824 | ]) | |
50a0749e | 1825 | ]) |
a093c6a4 BB |
1826 | ]) |
1827 | ]) | |
ec7d53e9 | 1828 | |
9b2048c2 BB |
1829 | dnl # |
1830 | dnl # 2.6.36 API change, | |
1831 | dnl # The 'struct fs_struct->lock' was changed from a rwlock_t to | |
1832 | dnl # a spinlock_t to improve the fastpath performance. | |
1833 | dnl # | |
1834 | AC_DEFUN([SPL_AC_FS_STRUCT_SPINLOCK], [ | |
1835 | AC_MSG_CHECKING([whether struct fs_struct uses spinlock_t]) | |
97fd6a07 BB |
1836 | tmp_flags="$EXTRA_KCFLAGS" |
1837 | EXTRA_KCFLAGS="-Werror" | |
9b2048c2 BB |
1838 | SPL_LINUX_TRY_COMPILE([ |
1839 | #include <linux/sched.h> | |
1840 | #include <linux/fs_struct.h> | |
1841 | ],[ | |
1842 | struct fs_struct fs; | |
1843 | spin_lock_init(&fs.lock); | |
1844 | ],[ | |
1845 | AC_MSG_RESULT(yes) | |
1846 | AC_DEFINE(HAVE_FS_STRUCT_SPINLOCK, 1, | |
1847 | [struct fs_struct uses spinlock_t]) | |
1848 | ],[ | |
1849 | AC_MSG_RESULT(no) | |
1850 | ]) | |
97fd6a07 | 1851 | EXTRA_KCFLAGS="$tmp_flags" |
9b2048c2 BB |
1852 | ]) |
1853 | ||
ec7d53e9 BB |
1854 | dnl # |
1855 | dnl # 2.6.29 API change, | |
1856 | dnl # check whether 'struct cred' exists | |
1857 | dnl # | |
1858 | AC_DEFUN([SPL_AC_CRED_STRUCT], [ | |
1859 | AC_MSG_CHECKING([whether struct cred exists]) | |
1860 | SPL_LINUX_TRY_COMPILE([ | |
1861 | #include <linux/cred.h> | |
1862 | ],[ | |
03318641 | 1863 | struct cred *cr __attribute__ ((unused)); |
ec7d53e9 BB |
1864 | cr = NULL; |
1865 | ],[ | |
1866 | AC_MSG_RESULT(yes) | |
1867 | AC_DEFINE(HAVE_CRED_STRUCT, 1, [struct cred exists]) | |
1868 | ],[ | |
1869 | AC_MSG_RESULT(no) | |
1870 | ]) | |
1871 | ]) | |
1872 | ||
f7fd6ddd RY |
1873 | |
1874 | dnl # | |
1875 | dnl # User namespaces, use kuid_t in place of uid_t | |
1876 | dnl # where available. Not strictly a user namespaces thing | |
1877 | dnl # but it should prevent surprises | |
1878 | dnl # | |
1879 | AC_DEFUN([SPL_AC_KUIDGID_T], [ | |
1880 | AC_MSG_CHECKING([whether kuid_t/kgid_t is available]) | |
1881 | SPL_LINUX_TRY_COMPILE([ | |
1882 | #include <linux/uidgid.h> | |
1883 | ], [ | |
1884 | kuid_t userid = KUIDT_INIT(0); | |
1885 | kgid_t groupid = KGIDT_INIT(0); | |
1886 | ],[ | |
1887 | SPL_LINUX_TRY_COMPILE([ | |
1888 | #include <linux/uidgid.h> | |
1889 | ], [ | |
1890 | kuid_t userid = 0; | |
1891 | kgid_t groupid = 0; | |
1892 | ],[ | |
1893 | AC_MSG_RESULT(yes; optional) | |
1894 | ],[ | |
1895 | AC_MSG_RESULT(yes; mandatory) | |
1896 | AC_DEFINE(HAVE_KUIDGID_T, 1, [kuid_t/kgid_t in use]) | |
1897 | ]) | |
1898 | ],[ | |
1899 | AC_MSG_RESULT(no) | |
1900 | ]) | |
1901 | ]) | |
1902 | ||
ec7d53e9 | 1903 | dnl # |
e811949a | 1904 | dnl # Custom SPL patch may export this symbol. |
ec7d53e9 | 1905 | dnl # |
723aa3b0 ED |
1906 | AC_DEFUN([SPL_AC_GROUPS_SEARCH], |
1907 | [AC_MSG_CHECKING([whether groups_search() is available]) | |
1908 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1909 | #include <linux/cred.h> | |
f7fd6ddd RY |
1910 | #ifdef HAVE_KUIDGID_T |
1911 | #include <linux/uidgid.h> | |
1912 | #endif | |
723aa3b0 | 1913 | ], [ |
f7fd6ddd RY |
1914 | #ifdef HAVE_KUIDGID_T |
1915 | groups_search(NULL, KGIDT_INIT(0)); | |
1916 | #else | |
723aa3b0 | 1917 | groups_search(NULL, 0); |
f7fd6ddd | 1918 | #endif |
723aa3b0 ED |
1919 | ], [groups_search], [], [ |
1920 | AC_MSG_RESULT(yes) | |
1921 | AC_DEFINE(HAVE_GROUPS_SEARCH, 1, [groups_search() is available]) | |
1922 | ], [ | |
1923 | AC_MSG_RESULT(no) | |
1924 | ]) | |
ec7d53e9 | 1925 | ]) |
e811949a BB |
1926 | |
1927 | dnl # | |
1928 | dnl # 2.6.x API change, | |
1929 | dnl # __put_task_struct() was exported in RHEL5 but unavailable elsewhere. | |
1930 | dnl # | |
723aa3b0 ED |
1931 | AC_DEFUN([SPL_AC_PUT_TASK_STRUCT], |
1932 | [AC_MSG_CHECKING([whether __put_task_struct() is available]) | |
1933 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1934 | #include <linux/sched.h> | |
1935 | ], [ | |
1936 | __put_task_struct(NULL); | |
1937 | ], [__put_task_struct], [], [ | |
1938 | AC_MSG_RESULT(yes) | |
1939 | AC_DEFINE(HAVE_PUT_TASK_STRUCT, 1, | |
1940 | [__put_task_struct() is available]) | |
1941 | ], [ | |
1942 | AC_MSG_RESULT(no) | |
1943 | ]) | |
e811949a | 1944 | ]) |
3977f837 BB |
1945 | |
1946 | dnl # | |
1947 | dnl # 2.6.32 API change, | |
1948 | dnl # Unused 'struct file *' removed from prototype. | |
1949 | dnl # | |
1950 | AC_DEFUN([SPL_AC_5ARGS_PROC_HANDLER], [ | |
1951 | AC_MSG_CHECKING([whether proc_handler() wants 5 args]) | |
1952 | SPL_LINUX_TRY_COMPILE([ | |
1953 | #include <linux/sysctl.h> | |
1954 | ],[ | |
1955 | proc_dostring(NULL, 0, NULL, NULL, NULL); | |
1956 | ],[ | |
1957 | AC_MSG_RESULT(yes) | |
1958 | AC_DEFINE(HAVE_5ARGS_PROC_HANDLER, 1, | |
1959 | [proc_handler() wants 5 args]) | |
1960 | ],[ | |
1961 | AC_MSG_RESULT(no) | |
1962 | ]) | |
1963 | ]) | |
b868e22f BB |
1964 | |
1965 | dnl # | |
1966 | dnl # 2.6.x API change, | |
1967 | dnl # kvasprintf() function added. | |
1968 | dnl # | |
723aa3b0 ED |
1969 | AC_DEFUN([SPL_AC_KVASPRINTF], |
1970 | [AC_MSG_CHECKING([whether kvasprintf() is available]) | |
1971 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1972 | #include <linux/kernel.h> | |
1973 | ], [ | |
1974 | kvasprintf(0, NULL, *((va_list*)NULL)); | |
1975 | ], [kvasprintf], [], [ | |
1976 | AC_MSG_RESULT(yes) | |
1977 | AC_DEFINE(HAVE_KVASPRINTF, 1, [kvasprintf() is available]) | |
1978 | ], [ | |
1979 | AC_MSG_RESULT(no) | |
1980 | ]) | |
b868e22f | 1981 | ]) |
f0ff89fc | 1982 | |
0d0b5237 BB |
1983 | dnl # |
1984 | dnl # 2.6.29 API change, | |
1985 | dnl # vfs_fsync() funcation added, prior to this use file_fsync(). | |
1986 | dnl # | |
723aa3b0 ED |
1987 | AC_DEFUN([SPL_AC_VFS_FSYNC], |
1988 | [AC_MSG_CHECKING([whether vfs_fsync() is available]) | |
1989 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
1990 | #include <linux/fs.h> | |
1991 | ], [ | |
1992 | (void) vfs_fsync; | |
1993 | ], [vfs_fsync], [fs/sync.c], [ | |
1994 | AC_MSG_RESULT(yes) | |
1995 | AC_DEFINE(HAVE_VFS_FSYNC, 1, [vfs_fsync() is available]) | |
1996 | ], [ | |
1997 | AC_MSG_RESULT(no) | |
1998 | ]) | |
0d0b5237 BB |
1999 | ]) |
2000 | ||
f0ff89fc BB |
2001 | dnl # |
2002 | dnl # 2.6.35 API change, | |
0d0b5237 | 2003 | dnl # Unused 'struct dentry *' removed from vfs_fsync() prototype. |
f0ff89fc | 2004 | dnl # |
0d0b5237 BB |
2005 | AC_DEFUN([SPL_AC_2ARGS_VFS_FSYNC], [ |
2006 | AC_MSG_CHECKING([whether vfs_fsync() wants 2 args]) | |
f0ff89fc | 2007 | SPL_LINUX_TRY_COMPILE([ |
0d0b5237 | 2008 | #include <linux/fs.h> |
f0ff89fc | 2009 | ],[ |
0d0b5237 | 2010 | vfs_fsync(NULL, 0); |
f0ff89fc BB |
2011 | ],[ |
2012 | AC_MSG_RESULT(yes) | |
0d0b5237 | 2013 | AC_DEFINE(HAVE_2ARGS_VFS_FSYNC, 1, [vfs_fsync() wants 2 args]) |
f0ff89fc BB |
2014 | ],[ |
2015 | AC_MSG_RESULT(no) | |
2016 | ]) | |
2017 | ]) | |
46aa7b39 | 2018 | |
bbdc6ae4 ED |
2019 | dnl # |
2020 | dnl # 3.5 API change, | |
2021 | dnl # inode_operations.truncate_range removed | |
bbdc6ae4 ED |
2022 | dnl # |
2023 | AC_DEFUN([SPL_AC_INODE_TRUNCATE_RANGE], [ | |
2024 | AC_MSG_CHECKING([whether truncate_range() inode operation is available]) | |
2025 | SPL_LINUX_TRY_COMPILE([ | |
2026 | #include <linux/fs.h> | |
2027 | ],[ | |
2028 | struct inode_operations ops; | |
2029 | ops.truncate_range = NULL; | |
2030 | ],[ | |
2031 | AC_MSG_RESULT(yes) | |
2032 | AC_DEFINE(HAVE_INODE_TRUNCATE_RANGE, 1, | |
2033 | [truncate_range() inode operation is available]) | |
2034 | ],[ | |
2035 | AC_MSG_RESULT(no) | |
2036 | ]) | |
1c7b3eaf BB |
2037 | ]) |
2038 | ||
2039 | dnl # | |
2040 | dnl # Linux 2.6.38 - 3.x API | |
2041 | dnl # | |
2042 | AC_DEFUN([SPL_AC_KERNEL_FILE_FALLOCATE], [ | |
2043 | AC_MSG_CHECKING([whether fops->fallocate() exists]) | |
2044 | SPL_LINUX_TRY_COMPILE([ | |
2045 | #include <linux/fs.h> | |
2046 | ],[ | |
2047 | long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL; | |
2048 | struct file_operations fops __attribute__ ((unused)) = { | |
2049 | .fallocate = fallocate, | |
2050 | }; | |
2051 | ],[ | |
2052 | AC_MSG_RESULT(yes) | |
2053 | AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists]) | |
2054 | ],[ | |
2055 | AC_MSG_RESULT(no) | |
2056 | ]) | |
2057 | ]) | |
2058 | ||
2059 | dnl # | |
2060 | dnl # Linux 2.6.x - 2.6.37 API | |
2061 | dnl # | |
2062 | AC_DEFUN([SPL_AC_KERNEL_INODE_FALLOCATE], [ | |
2063 | AC_MSG_CHECKING([whether iops->fallocate() exists]) | |
2064 | SPL_LINUX_TRY_COMPILE([ | |
2065 | #include <linux/fs.h> | |
2066 | ],[ | |
2067 | long (*fallocate) (struct inode *, int, loff_t, loff_t) = NULL; | |
2068 | struct inode_operations fops __attribute__ ((unused)) = { | |
2069 | .fallocate = fallocate, | |
2070 | }; | |
2071 | ],[ | |
2072 | AC_MSG_RESULT(yes) | |
2073 | AC_DEFINE(HAVE_INODE_FALLOCATE, 1, [fops->fallocate() exists]) | |
2074 | ],[ | |
2075 | AC_MSG_RESULT(no) | |
2076 | ]) | |
2077 | ]) | |
2078 | ||
2079 | dnl # | |
2080 | dnl # PaX Linux 2.6.38 - 3.x API | |
2081 | dnl # | |
2082 | AC_DEFUN([SPL_AC_PAX_KERNEL_FILE_FALLOCATE], [ | |
2083 | AC_MSG_CHECKING([whether fops->fallocate() exists]) | |
2084 | SPL_LINUX_TRY_COMPILE([ | |
2085 | #include <linux/fs.h> | |
2086 | ],[ | |
2087 | long (*fallocate) (struct file *, int, loff_t, loff_t) = NULL; | |
2088 | struct file_operations_no_const fops __attribute__ ((unused)) = { | |
2089 | .fallocate = fallocate, | |
2090 | }; | |
2091 | ],[ | |
2092 | AC_MSG_RESULT(yes) | |
2093 | AC_DEFINE(HAVE_FILE_FALLOCATE, 1, [fops->fallocate() exists]) | |
2094 | ],[ | |
2095 | AC_MSG_RESULT(no) | |
2096 | ]) | |
2097 | ]) | |
2098 | ||
2099 | dnl # | |
2100 | dnl # The fallocate callback was moved from the inode_operations | |
2101 | dnl # structure to the file_operations structure. | |
2102 | dnl # | |
2103 | AC_DEFUN([SPL_AC_KERNEL_FALLOCATE], [ | |
2104 | SPL_AC_KERNEL_FILE_FALLOCATE | |
2105 | SPL_AC_KERNEL_INODE_FALLOCATE | |
2106 | SPL_AC_PAX_KERNEL_FILE_FALLOCATE | |
2107 | ]) | |
bbdc6ae4 | 2108 | |
46aa7b39 NB |
2109 | dnl # |
2110 | dnl # 2.6.33 API change. Also backported in RHEL5 as of 2.6.18-190.el5. | |
2111 | dnl # Earlier versions of rwsem_is_locked() were inline and had a race | |
2112 | dnl # condition. The fixed version is exported as a symbol. The race | |
2113 | dnl # condition is fixed by acquiring sem->wait_lock, so we must not | |
2114 | dnl # call that version while holding sem->wait_lock. | |
2115 | dnl # | |
723aa3b0 ED |
2116 | AC_DEFUN([SPL_AC_EXPORTED_RWSEM_IS_LOCKED], |
2117 | [AC_MSG_CHECKING([whether rwsem_is_locked() acquires sem->wait_lock]) | |
2118 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
2119 | #include <linux/rwsem.h> | |
2120 | int rwsem_is_locked(struct rw_semaphore *sem) { return 0; } | |
2121 | ], [], [rwsem_is_locked], [lib/rwsem-spinlock.c], [ | |
2122 | AC_MSG_RESULT(yes) | |
2123 | AC_DEFINE(RWSEM_IS_LOCKED_TAKES_WAIT_LOCK, 1, | |
2124 | [rwsem_is_locked() acquires sem->wait_lock]) | |
2125 | ], [ | |
2126 | AC_MSG_RESULT(no) | |
2127 | ]) | |
46aa7b39 | 2128 | ]) |
914b0631 | 2129 | |
e76f4bf1 BB |
2130 | dnl # |
2131 | dnl # 2.6.xx API compat, | |
2132 | dnl # There currently exists no exposed API to partially shrink the dcache. | |
2133 | dnl # The expected mechanism to shrink the cache is a registered shrinker | |
2134 | dnl # which is called during memory pressure. | |
2135 | dnl # | |
723aa3b0 ED |
2136 | AC_DEFUN([SPL_AC_SHRINK_DCACHE_MEMORY], |
2137 | [AC_MSG_CHECKING([whether shrink_dcache_memory() is available]) | |
2138 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
2139 | #include <linux/dcache.h> | |
2140 | ], [ | |
2141 | shrink_dcache_memory(0, 0); | |
2142 | ], [shrink_dcache_memory], [fs/dcache.c], [ | |
2143 | AC_MSG_RESULT(yes) | |
2144 | AC_DEFINE(HAVE_SHRINK_DCACHE_MEMORY, 1, | |
2145 | [shrink_dcache_memory() is available]) | |
2146 | ], [ | |
2147 | AC_MSG_RESULT(no) | |
2148 | ]) | |
e76f4bf1 BB |
2149 | ]) |
2150 | ||
2151 | dnl # | |
2152 | dnl # 2.6.xx API compat, | |
2153 | dnl # There currently exists no exposed API to partially shrink the icache. | |
2154 | dnl # The expected mechanism to shrink the cache is a registered shrinker | |
2155 | dnl # which is called during memory pressure. | |
2156 | dnl # | |
723aa3b0 ED |
2157 | AC_DEFUN([SPL_AC_SHRINK_ICACHE_MEMORY], |
2158 | [AC_MSG_CHECKING([whether shrink_icache_memory() is available]) | |
2159 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
2160 | #include <linux/dcache.h> | |
2161 | ], [ | |
2162 | shrink_icache_memory(0, 0); | |
2163 | ], [shrink_icache_memory], [fs/inode.c], [ | |
2164 | AC_MSG_RESULT(yes) | |
2165 | AC_DEFINE(HAVE_SHRINK_ICACHE_MEMORY, 1, | |
2166 | [shrink_icache_memory() is available]) | |
2167 | ], [ | |
2168 | AC_MSG_RESULT(no) | |
2169 | ]) | |
e76f4bf1 | 2170 | ]) |
b1cbc461 BB |
2171 | |
2172 | dnl # | |
ec18fe3c RY |
2173 | dnl # 2.6.28 API change |
2174 | dnl # The kern_path() function has been introduced. We adopt it as the new way | |
2175 | dnl # of looking up paths. When it is not available, we emulate it using the | |
2176 | dnl # older interfaces. | |
b1cbc461 | 2177 | dnl # |
ec18fe3c RY |
2178 | AC_DEFUN([SPL_AC_KERN_PATH], |
2179 | [AC_MSG_CHECKING([whether kern_path() is available]) | |
723aa3b0 ED |
2180 | SPL_LINUX_TRY_COMPILE_SYMBOL([ |
2181 | #include <linux/namei.h> | |
2182 | ], [ | |
ec18fe3c RY |
2183 | int r = kern_path(NULL, 0, NULL); |
2184 | ], [kern_path], [fs/namei.c], [ | |
723aa3b0 | 2185 | AC_MSG_RESULT(yes) |
ec18fe3c RY |
2186 | AC_DEFINE(HAVE_KERN_PATH, 1, |
2187 | [kern_path() is available]) | |
723aa3b0 ED |
2188 | ], [ |
2189 | AC_MSG_RESULT(no) | |
ec18fe3c RY |
2190 | AC_MSG_CHECKING([whether path_lookup() is available]) |
2191 | SPL_LINUX_TRY_COMPILE_SYMBOL([ | |
2192 | #include <linux/namei.h> | |
2193 | ], [ | |
2194 | int r = path_lookup(NULL, 0, NULL); | |
2195 | ], [path_lookup], [fs/namei.c], [ | |
2196 | AC_MSG_RESULT(yes) | |
2197 | AC_DEFINE(HAVE_KERN_PATH, 1, | |
2198 | [kern_path() is available]) | |
2199 | ], [ | |
2200 | AC_MSG_RESULT(no) | |
2201 | AC_MSG_ERROR([ | |
2202 | *** Neither kern_path() nor path_lookup() is available. | |
2203 | *** Please file an issue: | |
2204 | *** https://github.com/zfsonlinux/spl/issues/new]) | |
3dfc591a | 2205 | |
ec18fe3c RY |
2206 | ]) |
2207 | ]) | |
bcb15891 YS |
2208 | ]) |
2209 | ||
de081a2a BB |
2210 | dnl # |
2211 | dnl # /proc/kallsyms support, | |
2212 | dnl # Verify the kernel has CONFIG_KALLSYMS support enabled. | |
2213 | dnl # | |
2214 | AC_DEFUN([SPL_AC_CONFIG_KALLSYMS], [ | |
2215 | AC_MSG_CHECKING([whether CONFIG_KALLSYMS is defined]) | |
2216 | SPL_LINUX_TRY_COMPILE([ | |
2217 | #if !defined(CONFIG_KALLSYMS) | |
2218 | #error CONFIG_KALLSYMS not defined | |
2219 | #endif | |
2220 | ],[ ],[ | |
2221 | AC_MSG_RESULT([yes]) | |
2222 | ],[ | |
2223 | AC_MSG_RESULT([no]) | |
2224 | AC_MSG_ERROR([ | |
2225 | *** This kernel does not include the required kallsyms support. | |
2226 | *** Rebuild the kernel with CONFIG_KALLSYMS=y set.]) | |
2227 | ]) | |
2228 | ]) | |
2229 | ||
42b3ce62 BB |
2230 | dnl # |
2231 | dnl # zlib inflate compat, | |
2232 | dnl # Verify the kernel has CONFIG_ZLIB_INFLATE support enabled. | |
2233 | dnl # | |
2234 | AC_DEFUN([SPL_AC_CONFIG_ZLIB_INFLATE], [ | |
2235 | AC_MSG_CHECKING([whether CONFIG_ZLIB_INFLATE is defined]) | |
2236 | SPL_LINUX_TRY_COMPILE([ | |
2237 | #if !defined(CONFIG_ZLIB_INFLATE) && \ | |
2238 | !defined(CONFIG_ZLIB_INFLATE_MODULE) | |
2239 | #error CONFIG_ZLIB_INFLATE not defined | |
2240 | #endif | |
2241 | ],[ ],[ | |
2242 | AC_MSG_RESULT([yes]) | |
2243 | ],[ | |
2244 | AC_MSG_RESULT([no]) | |
2245 | AC_MSG_ERROR([ | |
2246 | *** This kernel does not include the required zlib inflate support. | |
2247 | *** Rebuild the kernel with CONFIG_ZLIB_INFLATE=y|m set.]) | |
2248 | ]) | |
2249 | ]) | |
2250 | ||
2251 | dnl # | |
2252 | dnl # zlib deflate compat, | |
2253 | dnl # Verify the kernel has CONFIG_ZLIB_DEFLATE support enabled. | |
2254 | dnl # | |
2255 | AC_DEFUN([SPL_AC_CONFIG_ZLIB_DEFLATE], [ | |
2256 | AC_MSG_CHECKING([whether CONFIG_ZLIB_DEFLATE is defined]) | |
2257 | SPL_LINUX_TRY_COMPILE([ | |
2258 | #if !defined(CONFIG_ZLIB_DEFLATE) && \ | |
2259 | !defined(CONFIG_ZLIB_DEFLATE_MODULE) | |
2260 | #error CONFIG_ZLIB_DEFLATE not defined | |
2261 | #endif | |
2262 | ],[ ],[ | |
2263 | AC_MSG_RESULT([yes]) | |
2264 | ],[ | |
2265 | AC_MSG_RESULT([no]) | |
2266 | AC_MSG_ERROR([ | |
2267 | *** This kernel does not include the required zlib deflate support. | |
2268 | *** Rebuild the kernel with CONFIG_ZLIB_DEFLATE=y|m set.]) | |
2269 | ]) | |
2270 | ]) | |
2271 | ||
3dfc591a BB |
2272 | dnl # |
2273 | dnl # 2.6.39 API compat, | |
2274 | dnl # The function zlib_deflate_workspacesize() now take 2 arguments. | |
2275 | dnl # This was done to avoid always having to allocate the maximum size | |
2276 | dnl # workspace (268K). The caller can now specific the windowBits and | |
2277 | dnl # memLevel compression parameters to get a smaller workspace. | |
2278 | dnl # | |
2279 | AC_DEFUN([SPL_AC_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE], | |
2280 | [AC_MSG_CHECKING([whether zlib_deflate_workspacesize() wants 2 args]) | |
2281 | SPL_LINUX_TRY_COMPILE([ | |
2282 | #include <linux/zlib.h> | |
2283 | ],[ | |
2284 | return zlib_deflate_workspacesize(MAX_WBITS, MAX_MEM_LEVEL); | |
2285 | ],[ | |
2286 | AC_MSG_RESULT(yes) | |
2287 | AC_DEFINE(HAVE_2ARGS_ZLIB_DEFLATE_WORKSPACESIZE, 1, | |
2288 | [zlib_deflate_workspacesize() wants 2 args]) | |
2289 | ],[ | |
2290 | AC_MSG_RESULT(no) | |
2291 | ]) | |
2292 | ]) | |
a55bcaad BB |
2293 | |
2294 | dnl # | |
2295 | dnl # 2.6.39 API change, | |
2296 | dnl # Shrinker adjust to use common shrink_control structure. | |
2297 | dnl # | |
2298 | AC_DEFUN([SPL_AC_SHRINK_CONTROL_STRUCT], [ | |
2299 | AC_MSG_CHECKING([whether struct shrink_control exists]) | |
2300 | SPL_LINUX_TRY_COMPILE([ | |
2301 | #include <linux/mm.h> | |
2302 | ],[ | |
2303 | struct shrink_control sc __attribute__ ((unused)); | |
2304 | ||
2305 | sc.nr_to_scan = 0; | |
2306 | sc.gfp_mask = GFP_KERNEL; | |
2307 | ],[ | |
2308 | AC_MSG_RESULT(yes) | |
2309 | AC_DEFINE(HAVE_SHRINK_CONTROL_STRUCT, 1, | |
2310 | [struct shrink_control exists]) | |
2311 | ],[ | |
2312 | AC_MSG_RESULT(no) | |
2313 | ]) | |
2314 | ]) | |
588d9004 DH |
2315 | |
2316 | dnl # | |
2317 | dnl # 3.1 API Change | |
2318 | dnl # | |
2319 | dnl # The rw_semaphore.wait_lock member was changed from spinlock_t to | |
2320 | dnl # raw_spinlock_t at commit ddb6c9b58a19edcfac93ac670b066c836ff729f1. | |
2321 | dnl # | |
2322 | AC_DEFUN([SPL_AC_RWSEM_SPINLOCK_IS_RAW], [ | |
2323 | AC_MSG_CHECKING([whether struct rw_semaphore member wait_lock is raw]) | |
2324 | tmp_flags="$EXTRA_KCFLAGS" | |
2325 | EXTRA_KCFLAGS="-Werror" | |
2326 | SPL_LINUX_TRY_COMPILE([ | |
2327 | #include <linux/rwsem.h> | |
2328 | ],[ | |
2329 | struct rw_semaphore dummy_semaphore __attribute__ ((unused)); | |
2330 | raw_spinlock_t dummy_lock __attribute__ ((unused)); | |
2331 | dummy_semaphore.wait_lock = dummy_lock; | |
2332 | ],[ | |
2333 | AC_MSG_RESULT(yes) | |
2334 | AC_DEFINE(RWSEM_SPINLOCK_IS_RAW, 1, | |
2335 | [struct rw_semaphore member wait_lock is raw_spinlock_t]) | |
2336 | ],[ | |
2337 | AC_MSG_RESULT(no) | |
2338 | ]) | |
2339 | EXTRA_KCFLAGS="$tmp_flags" | |
2340 | ]) | |
10087fe1 RY |
2341 | |
2342 | dnl # | |
2343 | dnl # 3.9 API change, | |
2344 | dnl # Moved things from linux/sched.h to linux/sched/rt.h | |
2345 | dnl # | |
2346 | AC_DEFUN([SPL_AC_SCHED_RT_HEADER], | |
2347 | [AC_MSG_CHECKING([whether header linux/sched/rt.h exists]) | |
2348 | SPL_LINUX_TRY_COMPILE([ | |
2349 | #include <linux/sched.h> | |
2350 | #include <linux/sched/rt.h> | |
2351 | ],[ | |
2352 | return 0; | |
2353 | ],[ | |
2354 | AC_DEFINE(HAVE_SCHED_RT_HEADER, 1, [linux/sched/rt.h exists]) | |
2355 | AC_MSG_RESULT(yes) | |
2356 | ],[ | |
2357 | AC_MSG_RESULT(no) | |
2358 | ]) | |
2359 | ]) | |
2a305c34 RY |
2360 | |
2361 | dnl # | |
2362 | dnl # 3.9 API change, | |
2363 | dnl # vfs_getattr() uses 2 args | |
2364 | dnl # It takes struct path * instead of struct vfsmount * and struct dentry * | |
2365 | dnl # | |
2366 | AC_DEFUN([SPL_AC_2ARGS_VFS_GETATTR], [ | |
2367 | AC_MSG_CHECKING([whether vfs_getattr() wants]) | |
2368 | SPL_LINUX_TRY_COMPILE([ | |
2369 | #include <linux/fs.h> | |
2370 | ],[ | |
2371 | vfs_getattr((struct path *) NULL, | |
2372 | (struct kstat *)NULL); | |
2373 | ],[ | |
2374 | AC_MSG_RESULT(2 args) | |
2375 | AC_DEFINE(HAVE_2ARGS_VFS_GETATTR, 1, | |
2376 | [vfs_getattr wants 2 args]) | |
2377 | ],[ | |
2378 | SPL_LINUX_TRY_COMPILE([ | |
2379 | #include <linux/fs.h> | |
2380 | ],[ | |
2381 | vfs_getattr((struct vfsmount *)NULL, | |
2382 | (struct dentry *)NULL, | |
2383 | (struct kstat *)NULL); | |
2384 | ],[ | |
2385 | AC_MSG_RESULT(3 args) | |
2386 | ],[ | |
2387 | AC_MSG_ERROR(unknown) | |
2388 | ]) | |
2389 | ]) | |
2390 | ]) | |
184c6873 NB |
2391 | |
2392 | dnl # | |
2393 | dnl # 2.6.36 API compatibility. | |
2394 | dnl # Added usleep_range timer. | |
2395 | dnl # usleep_range is a finer precision implementation of msleep | |
2396 | dnl # designed to be a drop-in replacement for udelay where a precise | |
2397 | dnl # sleep / busy-wait is unnecessary. | |
2398 | dnl # | |
2399 | AC_DEFUN([SPL_AC_USLEEP_RANGE], [ | |
2400 | AC_MSG_CHECKING([whether usleep_range() is available]) | |
2401 | SPL_LINUX_TRY_COMPILE([ | |
2402 | #include <linux/delay.h> | |
2403 | ],[ | |
2404 | usleep_range(0, 0); | |
2405 | ],[ | |
2406 | AC_MSG_RESULT(yes) | |
2407 | AC_DEFINE(HAVE_USLEEP_RANGE, 1, | |
2408 | [usleep_range is available]) | |
2409 | ],[ | |
2410 | AC_MSG_RESULT(no) | |
2411 | ]) | |
2412 | ]) | |
a073aeb0 BB |
2413 | |
2414 | dnl # | |
2415 | dnl # 2.6.35 API change, | |
2416 | dnl # The cachep->gfpflags member was renamed cachep->allocflags. These are | |
2417 | dnl # private allocation flags which are applied when allocating a new slab | |
2418 | dnl # in kmem_getpages(). Unfortunately there is no public API for setting | |
2419 | dnl # non-default flags. | |
2420 | dnl # | |
2421 | AC_DEFUN([SPL_AC_KMEM_CACHE_ALLOCFLAGS], [ | |
2422 | AC_MSG_CHECKING([whether struct kmem_cache has allocflags]) | |
2423 | SPL_LINUX_TRY_COMPILE([ | |
2424 | #include <linux/slab.h> | |
2425 | ],[ | |
2426 | struct kmem_cache cachep __attribute__ ((unused)); | |
2427 | cachep.allocflags = GFP_KERNEL; | |
2428 | ],[ | |
2429 | AC_MSG_RESULT(yes) | |
2430 | AC_DEFINE(HAVE_KMEM_CACHE_ALLOCFLAGS, 1, | |
2431 | [struct kmem_cache has allocflags]) | |
2432 | ],[ | |
2433 | AC_MSG_RESULT(no) | |
2434 | ||
2435 | AC_MSG_CHECKING([whether struct kmem_cache has gfpflags]) | |
2436 | SPL_LINUX_TRY_COMPILE([ | |
2437 | #include <linux/slab.h> | |
2438 | ],[ | |
2439 | struct kmem_cache cachep __attribute__ ((unused)); | |
2440 | cachep.gfpflags = GFP_KERNEL; | |
2441 | ],[ | |
2442 | AC_MSG_RESULT(yes) | |
2443 | AC_DEFINE(HAVE_KMEM_CACHE_GFPFLAGS, 1, | |
2444 | [struct kmem_cache has gfpflags]) | |
2445 | ],[ | |
2446 | AC_MSG_RESULT(no) | |
2447 | ]) | |
2448 | ]) | |
2449 | ]) | |
2fc44f66 NB |
2450 | |
2451 | dnl # | |
2452 | dnl # 3.17 API change, | |
2453 | dnl # wait_on_bit() no longer requires an action argument. The former | |
2454 | dnl # "wait_on_bit" interface required an 'action' function to be provided | |
2455 | dnl # which does the actual waiting. There were over 20 such functions in the | |
2456 | dnl # kernel, many of them identical, though most cases can be satisfied by one | |
2457 | dnl # of just two functions: one which uses io_schedule() and one which just | |
2458 | dnl # uses schedule(). This API change was made to consolidate all of those | |
2459 | dnl # redundant wait functions. | |
2460 | dnl # | |
2461 | AC_DEFUN([SPL_AC_WAIT_ON_BIT], [ | |
2462 | AC_MSG_CHECKING([whether wait_on_bit() takes an action]) | |
2463 | SPL_LINUX_TRY_COMPILE([ | |
2464 | #include <linux/wait.h> | |
2465 | ],[ | |
2466 | int (*action)(void *) = NULL; | |
2467 | wait_on_bit(NULL, 0, action, 0); | |
2468 | ],[ | |
2469 | AC_MSG_RESULT(yes) | |
2470 | AC_DEFINE(HAVE_WAIT_ON_BIT_ACTION, 1, [yes]) | |
2471 | ],[ | |
2472 | AC_MSG_RESULT(no) | |
2473 | ]) | |
2474 | ]) |