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716154c5 BB |
1 | ############################################################################### |
2 | # Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. | |
3 | # Copyright (C) 2007 The Regents of the University of California. | |
4 | # Written by Brian Behlendorf <behlendorf1@llnl.gov>. | |
5 | ############################################################################### | |
6 | # SPL_AC_CONFIG_KERNEL: Default SPL kernel configuration. | |
7 | ############################################################################### | |
8 | ||
86933a6e BB |
9 | AC_DEFUN([SPL_AC_CONFIG_KERNEL], [ |
10 | SPL_AC_KERNEL | |
11 | ||
86933a6e BB |
12 | if test "${LINUX_OBJ}" != "${LINUX}"; then |
13 | KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ" | |
14 | fi | |
86933a6e | 15 | AC_SUBST(KERNELMAKE_PARAMS) |
a7958f7e BB |
16 | |
17 | KERNELCPPFLAGS="$KERNELCPPFLAGS -Wstrict-prototypes" | |
86933a6e BB |
18 | AC_SUBST(KERNELCPPFLAGS) |
19 | ||
20 | SPL_AC_DEBUG | |
21 | SPL_AC_DEBUG_KMEM | |
055ffd98 | 22 | SPL_AC_DEBUG_KMEM_TRACKING |
5e9b5d83 | 23 | SPL_AC_ATOMIC_SPINLOCK |
302b88e6 BB |
24 | SPL_AC_TYPE_ATOMIC64_CMPXCHG |
25 | SPL_AC_TYPE_ATOMIC64_XCHG | |
d04c8a56 | 26 | SPL_AC_TYPE_UINTPTR_T |
86933a6e BB |
27 | SPL_AC_3ARGS_INIT_WORK |
28 | SPL_AC_2ARGS_REGISTER_SYSCTL | |
29 | SPL_AC_SET_SHRINKER | |
30 | SPL_AC_PATH_IN_NAMEIDATA | |
31 | SPL_AC_TASK_CURR | |
32 | SPL_AC_CTL_UNNUMBERED | |
79a3bf13 | 33 | SPL_AC_CTL_NAME |
86933a6e BB |
34 | SPL_AC_FLS64 |
35 | SPL_AC_DEVICE_CREATE | |
36 | SPL_AC_5ARGS_DEVICE_CREATE | |
37 | SPL_AC_CLASS_DEVICE_CREATE | |
38 | SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT | |
39 | SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE | |
40 | SPL_AC_TIMESPEC_SUB | |
41 | SPL_AC_INIT_UTSNAME | |
42 | SPL_AC_FDTABLE_HEADER | |
43 | SPL_AC_FILES_FDTABLE | |
44 | SPL_AC_UACCESS_HEADER | |
45 | SPL_AC_KMALLOC_NODE | |
46 | SPL_AC_MONOTONIC_CLOCK | |
47 | SPL_AC_INODE_I_MUTEX | |
4d54fdee | 48 | SPL_AC_MUTEX_OWNER |
86933a6e | 49 | SPL_AC_MUTEX_LOCK_NESTED |
86933a6e BB |
50 | SPL_AC_3ARGS_ON_EACH_CPU |
51 | SPL_AC_KALLSYMS_LOOKUP_NAME | |
52 | SPL_AC_GET_VMALLOC_INFO | |
53 | SPL_AC_PGDAT_HELPERS | |
54 | SPL_AC_FIRST_ONLINE_PGDAT | |
55 | SPL_AC_NEXT_ONLINE_PGDAT | |
56 | SPL_AC_NEXT_ZONE | |
57 | SPL_AC_PGDAT_LIST | |
86933a6e | 58 | SPL_AC_GLOBAL_PAGE_STATE |
6ae7fef5 BB |
59 | SPL_AC_ZONE_STAT_ITEM_FREE |
60 | SPL_AC_ZONE_STAT_ITEM_INACTIVE | |
61 | SPL_AC_ZONE_STAT_ITEM_ACTIVE | |
62 | SPL_AC_GET_ZONE_COUNTS | |
7119bf70 | 63 | SPL_AC_USER_PATH_DIR |
51a727e9 BB |
64 | SPL_AC_SET_FS_PWD |
65 | SPL_AC_2ARGS_SET_FS_PWD | |
86933a6e BB |
66 | SPL_AC_2ARGS_VFS_UNLINK |
67 | SPL_AC_4ARGS_VFS_RENAME | |
ec7d53e9 BB |
68 | SPL_AC_CRED_STRUCT |
69 | SPL_AC_GROUPS_SEARCH | |
e811949a | 70 | SPL_AC_PUT_TASK_STRUCT |
3977f837 | 71 | SPL_AC_5ARGS_PROC_HANDLER |
b868e22f | 72 | SPL_AC_KVASPRINTF |
f0ff89fc | 73 | SPL_AC_3ARGS_FILE_FSYNC |
46aa7b39 | 74 | SPL_AC_EXPORTED_RWSEM_IS_LOCKED |
86933a6e BB |
75 | ]) |
76 | ||
77 | AC_DEFUN([SPL_AC_MODULE_SYMVERS], [ | |
bb339d06 | 78 | modpost=$LINUX/scripts/Makefile.modpost |
86933a6e | 79 | AC_MSG_CHECKING([kernel file name for module symbols]) |
bb339d06 BB |
80 | if test -f "$modpost"; then |
81 | if grep -q Modules.symvers $modpost; then | |
82 | LINUX_SYMBOLS=Modules.symvers | |
83 | else | |
84 | LINUX_SYMBOLS=Module.symvers | |
85 | fi | |
86933a6e | 86 | else |
bb339d06 | 87 | LINUX_SYMBOLS=NONE |
86933a6e BB |
88 | fi |
89 | AC_MSG_RESULT($LINUX_SYMBOLS) | |
90 | AC_SUBST(LINUX_SYMBOLS) | |
91 | ]) | |
92 | ||
57d86234 | 93 | AC_DEFUN([SPL_AC_KERNEL], [ |
57d86234 BB |
94 | AC_ARG_WITH([linux], |
95 | AS_HELP_STRING([--with-linux=PATH], | |
96 | [Path to kernel source]), | |
39a3d2a4 | 97 | [kernelsrc="$withval"]) |
57d86234 BB |
98 | |
99 | AC_ARG_WITH([linux-obj], | |
100 | AS_HELP_STRING([--with-linux-obj=PATH], | |
101 | [Path to kernel build objects]), | |
102 | [kernelbuild="$withval"]) | |
103 | ||
104 | AC_MSG_CHECKING([kernel source directory]) | |
105 | if test -z "$kernelsrc"; then | |
534c4e38 BM |
106 | headersdir="/lib/modules/$(uname -r)/build" |
107 | if test -e "$headersdir"; then | |
108 | sourcelink=$(readlink -f "$headersdir") | |
109 | else | |
110 | sourcelink=$(ls -1d /usr/src/kernels/* \ | |
111 | /usr/src/linux-* \ | |
112 | 2>/dev/null | grep -v obj | tail -1) | |
113 | fi | |
57d86234 | 114 | |
8fd4e3af | 115 | if test -n "$sourcelink" && test -e ${sourcelink}; then |
d4326403 | 116 | kernelsrc=`readlink -f ${sourcelink}` |
d4326403 | 117 | else |
57d86234 BB |
118 | AC_MSG_RESULT([Not found]) |
119 | AC_MSG_ERROR([ | |
8fd4e3af BB |
120 | *** Please make sure the kernel devel package for your distribution |
121 | *** is installed then try again. If that fails you can specify the | |
122 | *** location of the kernel source with the '--with-linux=PATH' option.]) | |
57d86234 | 123 | fi |
c5f70460 BB |
124 | else |
125 | if test "$kernelsrc" = "NONE"; then | |
126 | kernsrcver=NONE | |
127 | fi | |
57d86234 BB |
128 | fi |
129 | ||
130 | AC_MSG_RESULT([$kernelsrc]) | |
131 | AC_MSG_CHECKING([kernel build directory]) | |
39a3d2a4 | 132 | if test -z "$kernelbuild"; then |
e2d28a37 BB |
133 | if test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}; then |
134 | kernelbuild=${kernelsrc}-obj/${target_cpu}/${target_cpu} | |
135 | elif test -d ${kernelsrc}-obj/${target_cpu}/default; then | |
136 | kernelbuild=${kernelsrc}-obj/${target_cpu}/default | |
137 | elif test -d `dirname ${kernelsrc}`/build-${target_cpu}; then | |
138 | kernelbuild=`dirname ${kernelsrc}`/build-${target_cpu} | |
39a3d2a4 BB |
139 | else |
140 | kernelbuild=${kernelsrc} | |
141 | fi | |
bf338d8d | 142 | fi |
57d86234 BB |
143 | AC_MSG_RESULT([$kernelbuild]) |
144 | ||
145 | AC_MSG_CHECKING([kernel source version]) | |
fd921c2e BB |
146 | utsrelease1=$kernelbuild/include/linux/version.h |
147 | utsrelease2=$kernelbuild/include/linux/utsrelease.h | |
148 | utsrelease3=$kernelbuild/include/generated/utsrelease.h | |
149 | if test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1; then | |
150 | utsrelease=linux/version.h | |
151 | elif test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2; then | |
152 | utsrelease=linux/utsrelease.h | |
153 | elif test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3; then | |
154 | utsrelease=generated/utsrelease.h | |
155 | fi | |
57d86234 | 156 | |
fd921c2e BB |
157 | if test "$utsrelease"; then |
158 | kernsrcver=`(echo "#include <$utsrelease>"; | |
57d86234 | 159 | echo "kernsrcver=UTS_RELEASE") | |
d4326403 | 160 | cpp -I $kernelbuild/include | |
57d86234 | 161 | grep "^kernsrcver=" | cut -d \" -f 2` |
57d86234 | 162 | |
fd921c2e BB |
163 | if test -z "$kernsrcver"; then |
164 | AC_MSG_RESULT([Not found]) | |
165 | AC_MSG_ERROR([*** Cannot determine kernel version.]) | |
166 | fi | |
167 | else | |
57d86234 | 168 | AC_MSG_RESULT([Not found]) |
fd921c2e | 169 | AC_MSG_ERROR([*** Cannot find UTS_RELEASE definition.]) |
57d86234 BB |
170 | fi |
171 | ||
172 | AC_MSG_RESULT([$kernsrcver]) | |
173 | ||
57d86234 BB |
174 | LINUX=${kernelsrc} |
175 | LINUX_OBJ=${kernelbuild} | |
c5f70460 BB |
176 | LINUX_VERSION=${kernsrcver} |
177 | ||
57d86234 BB |
178 | AC_SUBST(LINUX) |
179 | AC_SUBST(LINUX_OBJ) | |
c5f70460 | 180 | AC_SUBST(LINUX_VERSION) |
57d86234 | 181 | |
86933a6e | 182 | SPL_AC_MODULE_SYMVERS |
2e0e7e69 BB |
183 | ]) |
184 | ||
86933a6e | 185 | dnl # |
287b2fb1 BB |
186 | dnl # Explicitly check for gawk, we require it for the the usermode |
187 | dnl # helper. For some reason the standard awk command does not | |
188 | dnl # behave correctly when invoked from the usermode helper. | |
86933a6e | 189 | dnl # |
287b2fb1 | 190 | AC_DEFUN([SPL_AC_GAWK], [ |
18142514 BB |
191 | AS_IF([test "x$AWK" != xgawk], [ |
192 | AC_MSG_ERROR([ | |
193 | *** Required util gawk missing. Please install the required | |
194 | *** gawk package for your distribution and try again.]) | |
195 | ]) | |
196 | ]) | |
86933a6e | 197 | |
287b2fb1 BB |
198 | dnl # |
199 | dnl # Default SPL user configuration | |
200 | dnl # | |
201 | AC_DEFUN([SPL_AC_CONFIG_USER], [ | |
202 | SPL_AC_GAWK | |
203 | ]) | |
204 | ||
205 | dnl # | |
206 | dnl # Check for rpm+rpmbuild to build RPM packages. If these tools | |
207 | dnl # are missing it is non-fatal but you will not be able to build | |
208 | dnl # RPM packages and will be warned if you try too. | |
209 | dnl # | |
210 | AC_DEFUN([SPL_AC_RPM], [ | |
211 | RPM=rpm | |
212 | RPMBUILD=rpmbuild | |
213 | ||
214 | AC_MSG_CHECKING([whether $RPM is available]) | |
215 | AS_IF([tmp=$($RPM --version 2>/dev/null)], [ | |
216 | RPM_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }') | |
217 | HAVE_RPM=yes | |
218 | AC_MSG_RESULT([$HAVE_RPM ($RPM_VERSION)]) | |
219 | ],[ | |
220 | HAVE_RPM=no | |
221 | AC_MSG_RESULT([$HAVE_RPM]) | |
222 | ]) | |
223 | ||
224 | AC_MSG_CHECKING([whether $RPMBUILD is available]) | |
225 | AS_IF([tmp=$($RPMBUILD --version 2>/dev/null)], [ | |
226 | RPMBUILD_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }') | |
227 | HAVE_RPMBUILD=yes | |
228 | AC_MSG_RESULT([$HAVE_RPMBUILD ($RPMBUILD_VERSION)]) | |
229 | ],[ | |
230 | HAVE_RPMBUILD=no | |
231 | AC_MSG_RESULT([$HAVE_RPMBUILD]) | |
232 | ]) | |
233 | ||
234 | AC_SUBST(HAVE_RPM) | |
235 | AC_SUBST(RPM) | |
236 | AC_SUBST(RPM_VERSION) | |
237 | ||
238 | AC_SUBST(HAVE_RPMBUILD) | |
239 | AC_SUBST(RPMBUILD) | |
240 | AC_SUBST(RPMBUILD_VERSION) | |
241 | ]) | |
242 | ||
243 | dnl # | |
244 | dnl # Check for dpkg+dpkg-buildpackage to build DEB packages. If these | |
245 | dnl # tools are missing it is non-fatal but you will not be able to build | |
246 | dnl # DEB packages and will be warned if you try too. | |
247 | dnl # | |
248 | AC_DEFUN([SPL_AC_DPKG], [ | |
249 | DPKG=dpkg | |
250 | DPKGBUILD=dpkg-buildpackage | |
251 | ||
252 | AC_MSG_CHECKING([whether $DPKG is available]) | |
253 | AS_IF([tmp=$($DPKG --version 2>/dev/null)], [ | |
254 | DPKG_VERSION=$(echo $tmp | $AWK '/Debian/ { print $[7] }') | |
255 | HAVE_DPKG=yes | |
256 | AC_MSG_RESULT([$HAVE_DPKG ($DPKG_VERSION)]) | |
257 | ],[ | |
258 | HAVE_DPKG=no | |
259 | AC_MSG_RESULT([$HAVE_DPKG]) | |
260 | ]) | |
261 | ||
262 | AC_MSG_CHECKING([whether $DPKGBUILD is available]) | |
263 | AS_IF([tmp=$($DPKGBUILD --version 2>/dev/null)], [ | |
264 | DPKGBUILD_VERSION=$(echo $tmp | \ | |
265 | $AWK '/Debian/ { print $[4] }' | cut -f-4 -d'.') | |
266 | HAVE_DPKGBUILD=yes | |
267 | AC_MSG_RESULT([$HAVE_DPKGBUILD ($DPKGBUILD_VERSION)]) | |
268 | ],[ | |
269 | HAVE_DPKGBUILD=no | |
270 | AC_MSG_RESULT([$HAVE_DPKGBUILD]) | |
271 | ]) | |
272 | ||
273 | AC_SUBST(HAVE_DPKG) | |
274 | AC_SUBST(DPKG) | |
275 | AC_SUBST(DPKG_VERSION) | |
276 | ||
277 | AC_SUBST(HAVE_DPKGBUILD) | |
278 | AC_SUBST(DPKGBUILD) | |
279 | AC_SUBST(DPKGBUILD_VERSION) | |
280 | ]) | |
281 | ||
282 | dnl # | |
283 | dnl # Until native packaging for various different packing systems | |
284 | dnl # can be added the least we can do is attempt to use alien to | |
285 | dnl # convert the RPM packages to the needed package type. This is | |
286 | dnl # a hack but so far it has worked reasonable well. | |
287 | dnl # | |
288 | AC_DEFUN([SPL_AC_ALIEN], [ | |
289 | ALIEN=alien | |
290 | ||
291 | AC_MSG_CHECKING([whether $ALIEN is available]) | |
292 | AS_IF([tmp=$($ALIEN --version 2>/dev/null)], [ | |
293 | ALIEN_VERSION=$(echo $tmp | $AWK '{ print $[3] }') | |
294 | HAVE_ALIEN=yes | |
295 | AC_MSG_RESULT([$HAVE_ALIEN ($ALIEN_VERSION)]) | |
296 | ],[ | |
297 | HAVE_ALIEN=no | |
298 | AC_MSG_RESULT([$HAVE_ALIEN]) | |
299 | ]) | |
300 | ||
301 | AC_SUBST(HAVE_ALIEN) | |
302 | AC_SUBST(ALIEN) | |
303 | AC_SUBST(ALIEN_VERSION) | |
304 | ]) | |
305 | ||
306 | dnl # | |
307 | dnl # Using the VENDOR tag from config.guess set the default | |
308 | dnl # package type for 'make pkg': (rpm | deb | tgz) | |
309 | dnl # | |
310 | AC_DEFUN([SPL_AC_DEFAULT_PACKAGE], [ | |
73fc084e BB |
311 | AC_MSG_CHECKING([linux distribution]) |
312 | if test -f /etc/redhat-release ; then | |
313 | VENDOR=redhat ; | |
314 | elif test -f /etc/fedora-release ; then | |
315 | VENDOR=fedora ; | |
316 | elif test -f /etc/lsb-release ; then | |
317 | VENDOR=ubuntu ; | |
318 | elif test -f /etc/debian_version ; then | |
319 | VENDOR=debian ; | |
320 | elif test -f /etc/SuSE-release ; then | |
321 | VENDOR=sles ; | |
322 | elif test -f /etc/slackware-version ; then | |
323 | VENDOR=slackware ; | |
324 | elif test -f /etc/gentoo-release ; then | |
325 | VENDOR=gentoo ; | |
326 | else | |
327 | VENDOR= ; | |
328 | fi | |
329 | AC_MSG_RESULT([$VENDOR]) | |
330 | AC_SUBST(VENDOR) | |
287b2fb1 BB |
331 | |
332 | AC_MSG_CHECKING([default package type]) | |
333 | case "$VENDOR" in | |
334 | fedora) DEFAULT_PACKAGE=rpm ;; | |
335 | redhat) DEFAULT_PACKAGE=rpm ;; | |
336 | sles) DEFAULT_PACKAGE=rpm ;; | |
337 | ubuntu) DEFAULT_PACKAGE=deb ;; | |
338 | debian) DEFAULT_PACKAGE=deb ;; | |
339 | slackware) DEFAULT_PACKAGE=tgz ;; | |
340 | *) DEFAULT_PACKAGE=rpm ;; | |
341 | esac | |
342 | ||
343 | AC_MSG_RESULT([$DEFAULT_PACKAGE]) | |
344 | AC_SUBST(DEFAULT_PACKAGE) | |
345 | ]) | |
346 | ||
347 | dnl # | |
348 | dnl # Default SPL user configuration | |
349 | dnl # | |
350 | AC_DEFUN([SPL_AC_PACKAGE], [ | |
351 | SPL_AC_RPM | |
352 | SPL_AC_DPKG | |
353 | SPL_AC_ALIEN | |
354 | SPL_AC_DEFAULT_PACKAGE | |
355 | ]) | |
356 | ||
6a1c3d41 | 357 | AC_DEFUN([SPL_AC_LICENSE], [ |
86933a6e BB |
358 | AC_MSG_CHECKING([spl license]) |
359 | LICENSE=GPL | |
360 | AC_MSG_RESULT([$LICENSE]) | |
6a1c3d41 | 361 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DHAVE_GPL_ONLY_SYMBOLS" |
86933a6e BB |
362 | AC_SUBST(LICENSE) |
363 | ]) | |
364 | ||
365 | AC_DEFUN([SPL_AC_CONFIG], [ | |
366 | SPL_CONFIG=all | |
367 | AC_ARG_WITH([config], | |
368 | AS_HELP_STRING([--with-config=CONFIG], | |
c1541dfe | 369 | [Config file 'kernel|user|all|srpm']), |
86933a6e BB |
370 | [SPL_CONFIG="$withval"]) |
371 | ||
372 | AC_MSG_CHECKING([spl config]) | |
373 | AC_MSG_RESULT([$SPL_CONFIG]); | |
374 | AC_SUBST(SPL_CONFIG) | |
375 | ||
376 | case "$SPL_CONFIG" in | |
377 | kernel) SPL_AC_CONFIG_KERNEL ;; | |
378 | user) SPL_AC_CONFIG_USER ;; | |
379 | all) SPL_AC_CONFIG_KERNEL | |
380 | SPL_AC_CONFIG_USER ;; | |
c1541dfe | 381 | srpm) ;; |
86933a6e BB |
382 | *) |
383 | AC_MSG_RESULT([Error!]) | |
384 | AC_MSG_ERROR([Bad value "$SPL_CONFIG" for --with-config, | |
c1541dfe | 385 | user kernel|user|all|srpm]) ;; |
86933a6e BB |
386 | esac |
387 | ||
388 | AM_CONDITIONAL([CONFIG_USER], | |
389 | [test "$SPL_CONFIG" = user] || | |
390 | [test "$SPL_CONFIG" = all]) | |
391 | AM_CONDITIONAL([CONFIG_KERNEL], | |
392 | [test "$SPL_CONFIG" = kernel] || | |
393 | [test "$SPL_CONFIG" = all]) | |
6a1c3d41 BB |
394 | ]) |
395 | ||
055ffd98 BB |
396 | dnl # |
397 | dnl # Enable if the SPL should be compiled with internal debugging enabled. | |
398 | dnl # By default this support is disabled. | |
399 | dnl # | |
57d86234 | 400 | AC_DEFUN([SPL_AC_DEBUG], [ |
c950d148 | 401 | AC_MSG_CHECKING([whether debugging is enabled]) |
055ffd98 BB |
402 | AC_ARG_ENABLE([debug], |
403 | [AS_HELP_STRING([--enable-debug], | |
404 | [Enable generic debug support @<:@default=no@:>@])], | |
405 | [], | |
406 | [enable_debug=no]) | |
407 | ||
408 | AS_IF([test "x$enable_debug" = xyes], | |
c950d148 | 409 | [ |
c950d148 BB |
410 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG -Werror" |
411 | DEBUG_CFLAGS="-DDEBUG -Werror" | |
412 | ], | |
413 | [ | |
c950d148 BB |
414 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DNDEBUG" |
415 | DEBUG_CFLAGS="-DNDEBUG" | |
416 | ]) | |
055ffd98 | 417 | |
c950d148 | 418 | AC_SUBST(DEBUG_CFLAGS) |
055ffd98 | 419 | AC_MSG_RESULT([$enable_debug]) |
57d86234 BB |
420 | ]) |
421 | ||
055ffd98 BB |
422 | dnl # |
423 | dnl # Enabled by default it provides a minimal level of memory tracking. | |
424 | dnl # A total count of bytes allocated is kept for each alloc and free. | |
425 | dnl # Then at module unload time a report to the console will be printed | |
426 | dnl # if memory was leaked. Additionally, /proc/spl/kmem/slab will exist | |
427 | dnl # and provide an easy way to inspect the kmem based slab. | |
428 | dnl # | |
57d86234 | 429 | AC_DEFUN([SPL_AC_DEBUG_KMEM], [ |
055ffd98 BB |
430 | AC_ARG_ENABLE([debug-kmem], |
431 | [AS_HELP_STRING([--enable-debug-kmem], | |
432 | [Enable basic kmem accounting @<:@default=yes@:>@])], | |
433 | [], | |
434 | [enable_debug_kmem=yes]) | |
57d86234 | 435 | |
055ffd98 BB |
436 | AS_IF([test "x$enable_debug_kmem" = xyes], |
437 | [AC_DEFINE([DEBUG_KMEM], [1], | |
438 | [Define to 1 to enable basic kmem accounting]) | |
439 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM"]) | |
440 | ||
441 | AC_MSG_CHECKING([whether basic kmem accounting is enabled]) | |
442 | AC_MSG_RESULT([$enable_debug_kmem]) | |
57d86234 BB |
443 | ]) |
444 | ||
055ffd98 BB |
445 | dnl # |
446 | dnl # Disabled by default it provides detailed memory tracking. This | |
447 | dnl # feature also requires --enable-debug-kmem to be set. When enabled | |
448 | dnl # not only will total bytes be tracked but also the location of every | |
449 | dnl # alloc and free. When the SPL module is unloaded a list of all leaked | |
450 | dnl # addresses and where they were allocated will be dumped to the console. | |
451 | dnl # Enabling this feature has a significant impact on performance but it | |
452 | dnl # makes finding memory leaks pretty straight forward. | |
453 | dnl # | |
454 | AC_DEFUN([SPL_AC_DEBUG_KMEM_TRACKING], [ | |
455 | AC_ARG_ENABLE([debug-kmem-tracking], | |
456 | [AS_HELP_STRING([--enable-debug-kmem-tracking], | |
457 | [Enable detailed kmem tracking @<:@default=no@:>@])], | |
458 | [], | |
459 | [enable_debug_kmem_tracking=no]) | |
460 | ||
461 | AS_IF([test "x$enable_debug_kmem_tracking" = xyes], | |
462 | [AC_DEFINE([DEBUG_KMEM_TRACKING], [1], | |
463 | [Define to 1 to enable detailed kmem tracking]) | |
464 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM_TRACKING"]) | |
465 | ||
466 | AC_MSG_CHECKING([whether detailed kmem tracking is enabled]) | |
467 | AC_MSG_RESULT([$enable_debug_kmem_tracking]) | |
57d86234 BB |
468 | ]) |
469 | ||
470 | dnl # | |
471 | dnl # SPL_LINUX_CONFTEST | |
472 | dnl # | |
473 | AC_DEFUN([SPL_LINUX_CONFTEST], [ | |
dbe561d8 | 474 | cat confdefs.h - <<_ACEOF >conftest.c |
57d86234 BB |
475 | $1 |
476 | _ACEOF | |
477 | ]) | |
478 | ||
479 | dnl # | |
480 | dnl # SPL_LANG_PROGRAM(C)([PROLOGUE], [BODY]) | |
481 | dnl # | |
482 | m4_define([SPL_LANG_PROGRAM], [ | |
483 | $1 | |
484 | int | |
485 | main (void) | |
486 | { | |
487 | dnl Do *not* indent the following line: there may be CPP directives. | |
488 | dnl Don't move the `;' right after for the same reason. | |
489 | $2 | |
490 | ; | |
491 | return 0; | |
492 | } | |
493 | ]) | |
494 | ||
495 | dnl # | |
496 | dnl # SPL_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE | |
497 | dnl # | |
498 | AC_DEFUN([SPL_LINUX_COMPILE_IFELSE], [ | |
c5f70460 BB |
499 | m4_ifvaln([$1], [SPL_LINUX_CONFTEST([$1])]) |
500 | rm -Rf build && mkdir -p build | |
501 | echo "obj-m := conftest.o" >build/Makefile | |
502 | AS_IF( | |
3d0cb2d3 | 503 | [AC_TRY_COMMAND(cp conftest.c build && make [$2] -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $ARCH_UM M=$PWD/build) >/dev/null && AC_TRY_COMMAND([$3])], |
c5f70460 BB |
504 | [$4], |
505 | [_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])] | |
506 | ) | |
507 | rm -Rf build | |
57d86234 BB |
508 | ]) |
509 | ||
510 | dnl # | |
511 | dnl # SPL_LINUX_TRY_COMPILE like AC_TRY_COMPILE | |
512 | dnl # | |
513 | AC_DEFUN([SPL_LINUX_TRY_COMPILE], | |
514 | [SPL_LINUX_COMPILE_IFELSE( | |
d50bd9e2 BB |
515 | [AC_LANG_SOURCE([SPL_LANG_PROGRAM([[$1]], [[$2]])])], |
516 | [modules], | |
517 | [test -s build/conftest.o], | |
518 | [$3], [$4]) | |
57d86234 BB |
519 | ]) |
520 | ||
521 | dnl # | |
522 | dnl # SPL_LINUX_CONFIG | |
523 | dnl # | |
524 | AC_DEFUN([SPL_LINUX_CONFIG], | |
525 | [AC_MSG_CHECKING([whether Linux was built with CONFIG_$1]) | |
526 | SPL_LINUX_TRY_COMPILE([ | |
527 | #ifndef AUTOCONF_INCLUDED | |
528 | #include <linux/config.h> | |
529 | #endif | |
530 | ],[ | |
531 | #ifndef CONFIG_$1 | |
532 | #error CONFIG_$1 not #defined | |
533 | #endif | |
534 | ],[ | |
535 | AC_MSG_RESULT([yes]) | |
536 | $2 | |
537 | ],[ | |
538 | AC_MSG_RESULT([no]) | |
539 | $3 | |
540 | ]) | |
541 | ]) | |
542 | ||
543 | dnl # | |
544 | dnl # SPL_CHECK_SYMBOL_EXPORT | |
545 | dnl # check symbol exported or not | |
546 | dnl # | |
547 | AC_DEFUN([SPL_CHECK_SYMBOL_EXPORT], | |
548 | [AC_MSG_CHECKING([whether symbol $1 is exported]) | |
2e0e7e69 BB |
549 | grep -q -E '[[[:space:]]]$1[[[:space:]]]' \ |
550 | $LINUX_OBJ/Module*.symvers 2>/dev/null | |
57d86234 BB |
551 | rc=$? |
552 | if test $rc -ne 0; then | |
553 | export=0 | |
554 | for file in $2; do | |
2e0e7e69 BB |
555 | grep -q -E "EXPORT_SYMBOL.*($1)" \ |
556 | "$LINUX_OBJ/$file" 2>/dev/null | |
57d86234 BB |
557 | rc=$? |
558 | if test $rc -eq 0; then | |
559 | export=1 | |
560 | break; | |
561 | fi | |
562 | done | |
563 | if test $export -eq 0; then | |
564 | AC_MSG_RESULT([no]) | |
565 | $4 | |
566 | else | |
567 | AC_MSG_RESULT([yes]) | |
568 | $3 | |
569 | fi | |
570 | else | |
571 | AC_MSG_RESULT([yes]) | |
572 | $3 | |
573 | fi | |
574 | ]) | |
575 | ||
86de8532 BB |
576 | dnl # |
577 | dnl # SPL_CHECK_HEADER | |
578 | dnl # check whether header exists and define HAVE_$2_HEADER | |
579 | dnl # | |
580 | AC_DEFUN([SPL_CHECK_HEADER], | |
581 | [AC_MSG_CHECKING([whether header $1 exists]) | |
582 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 583 | #include <$1> |
86de8532 BB |
584 | ],[ |
585 | return 0; | |
586 | ],[ | |
587 | AC_DEFINE(HAVE_$2_HEADER, 1, [$1 exists]) | |
588 | AC_MSG_RESULT(yes) | |
589 | $3 | |
590 | ],[ | |
591 | AC_MSG_RESULT(no) | |
592 | $4 | |
593 | ]) | |
594 | ]) | |
6a6cafbe | 595 | |
57d86234 | 596 | dnl # |
d04c8a56 BB |
597 | dnl # Use the atomic implemenation based on global spinlocks. This |
598 | dnl # should only be needed by 32-bit kernels which do not provide | |
599 | dnl # the atomic64_* API. It may be optionally enabled as a fallback | |
600 | dnl # if problems are observed with the direct mapping to the native | |
601 | dnl # Linux atomic operations. You may not disable atomic spinlocks | |
602 | dnl # if you kernel does not an atomic64_* API. | |
57d86234 | 603 | dnl # |
d04c8a56 BB |
604 | AC_DEFUN([SPL_AC_ATOMIC_SPINLOCK], [ |
605 | AC_ARG_ENABLE([atomic-spinlocks], | |
606 | [AS_HELP_STRING([--enable-atomic-spinlocks], | |
607 | [Atomic types use spinlocks @<:@default=check@:>@])], | |
608 | [], | |
609 | [enable_atomic_spinlocks=check]) | |
57d86234 | 610 | |
a0f6da3d BB |
611 | SPL_LINUX_TRY_COMPILE([ |
612 | #include <asm/atomic.h> | |
613 | ],[ | |
614 | atomic64_t *ptr; | |
615 | ],[ | |
d04c8a56 | 616 | have_atomic64_t=yes |
a0f6da3d | 617 | AC_DEFINE(HAVE_ATOMIC64_T, 1, |
d04c8a56 | 618 | [kernel defines atomic64_t]) |
a0f6da3d | 619 | ],[ |
d04c8a56 BB |
620 | have_atomic64_t=no |
621 | ]) | |
622 | ||
623 | AS_IF([test "x$enable_atomic_spinlocks" = xcheck], [ | |
624 | AS_IF([test "x$have_atomic64_t" = xyes], [ | |
625 | enable_atomic_spinlocks=no | |
626 | ],[ | |
627 | enable_atomic_spinlocks=yes | |
628 | ]) | |
a0f6da3d | 629 | ]) |
d04c8a56 BB |
630 | |
631 | AS_IF([test "x$enable_atomic_spinlocks" = xyes], [ | |
632 | AC_DEFINE([ATOMIC_SPINLOCK], [1], | |
633 | [Atomic types use spinlocks]) | |
634 | ],[ | |
635 | AS_IF([test "x$have_atomic64_t" = xno], [ | |
636 | AC_MSG_FAILURE( | |
637 | [--disable-atomic-spinlocks given but required atomic64 support is unavailable]) | |
638 | ]) | |
639 | ]) | |
640 | ||
641 | AC_MSG_CHECKING([whether atomic types use spinlocks]) | |
642 | AC_MSG_RESULT([$enable_atomic_spinlocks]) | |
643 | ||
644 | AC_MSG_CHECKING([whether kernel defines atomic64_t]) | |
645 | AC_MSG_RESULT([$have_atomic64_t]) | |
a0f6da3d BB |
646 | ]) |
647 | ||
302b88e6 BB |
648 | dnl # |
649 | dnl # 2.6.24 API change, | |
650 | dnl # check if atomic64_cmpxchg is defined | |
651 | dnl # | |
652 | AC_DEFUN([SPL_AC_TYPE_ATOMIC64_CMPXCHG], | |
653 | [AC_MSG_CHECKING([whether kernel defines atomic64_cmpxchg]) | |
654 | SPL_LINUX_TRY_COMPILE([ | |
655 | #include <asm/atomic.h> | |
5ec44a37 | 656 | #include <asm/system.h> |
302b88e6 BB |
657 | ],[ |
658 | atomic64_cmpxchg((atomic64_t *)NULL, 0, 0); | |
659 | ],[ | |
660 | AC_MSG_RESULT([yes]) | |
661 | AC_DEFINE(HAVE_ATOMIC64_CMPXCHG, 1, | |
662 | [kernel defines atomic64_cmpxchg]) | |
663 | ],[ | |
664 | AC_MSG_RESULT([no]) | |
665 | ]) | |
666 | ]) | |
667 | ||
668 | dnl # | |
669 | dnl # 2.6.24 API change, | |
670 | dnl # check if atomic64_xchg is defined | |
671 | dnl # | |
672 | AC_DEFUN([SPL_AC_TYPE_ATOMIC64_XCHG], | |
673 | [AC_MSG_CHECKING([whether kernel defines atomic64_xchg]) | |
674 | SPL_LINUX_TRY_COMPILE([ | |
675 | #include <asm/atomic.h> | |
676 | ],[ | |
677 | atomic64_xchg((atomic64_t *)NULL, 0); | |
678 | ],[ | |
679 | AC_MSG_RESULT([yes]) | |
680 | AC_DEFINE(HAVE_ATOMIC64_XCHG, 1, | |
681 | [kernel defines atomic64_xchg]) | |
682 | ],[ | |
683 | AC_MSG_RESULT([no]) | |
684 | ]) | |
685 | ]) | |
686 | ||
d04c8a56 BB |
687 | dnl # |
688 | dnl # 2.6.24 API change, | |
689 | dnl # check if uintptr_t typedef is defined | |
690 | dnl # | |
691 | AC_DEFUN([SPL_AC_TYPE_UINTPTR_T], | |
692 | [AC_MSG_CHECKING([whether kernel defines uintptr_t]) | |
693 | SPL_LINUX_TRY_COMPILE([ | |
694 | #include <linux/types.h> | |
695 | ],[ | |
696 | uintptr_t *ptr; | |
697 | ],[ | |
698 | AC_MSG_RESULT([yes]) | |
699 | AC_DEFINE(HAVE_UINTPTR_T, 1, | |
700 | [kernel defines uintptr_t]) | |
701 | ],[ | |
702 | AC_MSG_RESULT([no]) | |
703 | ]) | |
704 | ]) | |
705 | ||
57d86234 | 706 | dnl # |
3d061e9d | 707 | dnl # 2.6.20 API change, |
57d86234 BB |
708 | dnl # INIT_WORK use 2 args and not store data inside |
709 | dnl # | |
710 | AC_DEFUN([SPL_AC_3ARGS_INIT_WORK], | |
711 | [AC_MSG_CHECKING([whether INIT_WORK wants 3 args]) | |
712 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 713 | #include <linux/workqueue.h> |
57d86234 | 714 | ],[ |
d50bd9e2 BB |
715 | struct work_struct work; |
716 | INIT_WORK(&work, NULL, NULL); | |
57d86234 | 717 | ],[ |
d50bd9e2 BB |
718 | AC_MSG_RESULT(yes) |
719 | AC_DEFINE(HAVE_3ARGS_INIT_WORK, 1, | |
720 | [INIT_WORK wants 3 args]) | |
57d86234 | 721 | ],[ |
d50bd9e2 | 722 | AC_MSG_RESULT(no) |
57d86234 BB |
723 | ]) |
724 | ]) | |
725 | ||
726 | dnl # | |
3d061e9d | 727 | dnl # 2.6.21 API change, |
57d86234 BB |
728 | dnl # 'register_sysctl_table' use only one argument instead of two |
729 | dnl # | |
730 | AC_DEFUN([SPL_AC_2ARGS_REGISTER_SYSCTL], | |
731 | [AC_MSG_CHECKING([whether register_sysctl_table() wants 2 args]) | |
732 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 733 | #include <linux/sysctl.h> |
57d86234 | 734 | ],[ |
d50bd9e2 | 735 | return register_sysctl_table(NULL,0); |
57d86234 | 736 | ],[ |
d50bd9e2 BB |
737 | AC_MSG_RESULT(yes) |
738 | AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1, | |
739 | [register_sysctl_table() wants 2 args]) | |
57d86234 | 740 | ],[ |
d50bd9e2 | 741 | AC_MSG_RESULT(no) |
57d86234 BB |
742 | ]) |
743 | ]) | |
744 | ||
57d86234 | 745 | dnl # |
3d061e9d | 746 | dnl # 2.6.23 API change |
57d86234 BB |
747 | dnl # Old set_shrinker API replaced with register_shrinker |
748 | dnl # | |
749 | AC_DEFUN([SPL_AC_SET_SHRINKER], [ | |
750 | AC_MSG_CHECKING([whether set_shrinker() available]) | |
751 | SPL_LINUX_TRY_COMPILE([ | |
752 | #include <linux/mm.h> | |
753 | ],[ | |
754 | return set_shrinker(DEFAULT_SEEKS, NULL); | |
755 | ],[ | |
756 | AC_MSG_RESULT([yes]) | |
757 | AC_DEFINE(HAVE_SET_SHRINKER, 1, | |
758 | [set_shrinker() available]) | |
759 | ],[ | |
760 | AC_MSG_RESULT([no]) | |
761 | ]) | |
762 | ]) | |
763 | ||
764 | dnl # | |
3d061e9d | 765 | dnl # 2.6.25 API change, |
57d86234 BB |
766 | dnl # struct path entry added to struct nameidata |
767 | dnl # | |
768 | AC_DEFUN([SPL_AC_PATH_IN_NAMEIDATA], | |
769 | [AC_MSG_CHECKING([whether struct path used in struct nameidata]) | |
770 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 771 | #include <linux/namei.h> |
57d86234 | 772 | ],[ |
d50bd9e2 | 773 | struct nameidata nd; |
57d86234 BB |
774 | |
775 | nd.path.mnt = NULL; | |
776 | nd.path.dentry = NULL; | |
777 | ],[ | |
d50bd9e2 BB |
778 | AC_MSG_RESULT(yes) |
779 | AC_DEFINE(HAVE_PATH_IN_NAMEIDATA, 1, | |
780 | [struct path used in struct nameidata]) | |
57d86234 | 781 | ],[ |
d50bd9e2 | 782 | AC_MSG_RESULT(no) |
57d86234 BB |
783 | ]) |
784 | ]) | |
785 | ||
786 | dnl # | |
787 | dnl # Custom SPL patch may export this system it is not required | |
788 | dnl # | |
789 | AC_DEFUN([SPL_AC_TASK_CURR], [ | |
790 | SPL_CHECK_SYMBOL_EXPORT([task_curr], [kernel/sched.c], | |
791 | [AC_DEFINE(HAVE_TASK_CURR, 1, [task_curr() exported])], | |
792 | []) | |
793 | ]) | |
794 | ||
795 | dnl # | |
3d061e9d | 796 | dnl # 2.6.19 API change, |
57d86234 BB |
797 | dnl # Use CTL_UNNUMBERED when binary sysctl is not required |
798 | dnl # | |
799 | AC_DEFUN([SPL_AC_CTL_UNNUMBERED], | |
800 | [AC_MSG_CHECKING([whether unnumbered sysctl support exists]) | |
801 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 802 | #include <linux/sysctl.h> |
57d86234 BB |
803 | ],[ |
804 | #ifndef CTL_UNNUMBERED | |
805 | #error CTL_UNNUMBERED undefined | |
806 | #endif | |
807 | ],[ | |
d50bd9e2 BB |
808 | AC_MSG_RESULT(yes) |
809 | AC_DEFINE(HAVE_CTL_UNNUMBERED, 1, | |
810 | [unnumbered sysctl support exists]) | |
57d86234 | 811 | ],[ |
d50bd9e2 | 812 | AC_MSG_RESULT(no) |
57d86234 BB |
813 | ]) |
814 | ]) | |
877a32e9 | 815 | |
79a3bf13 BB |
816 | dnl # |
817 | dnl # 2.6.33 API change, | |
818 | dnl # Removed .ctl_name from struct ctl_table. | |
819 | dnl # | |
820 | AC_DEFUN([SPL_AC_CTL_NAME], [ | |
821 | AC_MSG_CHECKING([whether struct ctl_table has ctl_name]) | |
822 | SPL_LINUX_TRY_COMPILE([ | |
823 | #include <linux/sysctl.h> | |
824 | ],[ | |
825 | struct ctl_table ctl; | |
826 | ctl.ctl_name = 0; | |
827 | ],[ | |
828 | AC_MSG_RESULT(yes) | |
829 | AC_DEFINE(HAVE_CTL_NAME, 1, [struct ctl_table has ctl_name]) | |
830 | ],[ | |
831 | AC_MSG_RESULT(no) | |
832 | ]) | |
833 | ]) | |
834 | ||
877a32e9 BB |
835 | dnl # |
836 | dnl # 2.6.16 API change. | |
837 | dnl # Check if 'fls64()' is available | |
838 | dnl # | |
839 | AC_DEFUN([SPL_AC_FLS64], | |
6a6cafbe BB |
840 | [AC_MSG_CHECKING([whether fls64() is available]) |
841 | SPL_LINUX_TRY_COMPILE([ | |
842 | #include <linux/bitops.h> | |
843 | ],[ | |
844 | return fls64(0); | |
845 | ],[ | |
846 | AC_MSG_RESULT(yes) | |
847 | AC_DEFINE(HAVE_FLS64, 1, [fls64() is available]) | |
848 | ],[ | |
849 | AC_MSG_RESULT(no) | |
850 | ]) | |
877a32e9 | 851 | ]) |
46c685d0 BB |
852 | |
853 | dnl # | |
854 | dnl # 2.6.18 API change, check whether device_create() is available. | |
855 | dnl # Device_create() was introduced in 2.6.18 and depricated | |
856 | dnl # class_device_create() which was fully removed in 2.6.26. | |
857 | dnl # | |
858 | AC_DEFUN([SPL_AC_DEVICE_CREATE], [ | |
859 | SPL_CHECK_SYMBOL_EXPORT( | |
860 | [device_create], | |
861 | [drivers/base/core.c], | |
862 | [AC_DEFINE(HAVE_DEVICE_CREATE, 1, | |
863 | [device_create() is available])], | |
6a6cafbe | 864 | []) |
46c685d0 BB |
865 | ]) |
866 | ||
8123ac4f BB |
867 | dnl # |
868 | dnl # 2.6.27 API change, | |
869 | dnl # device_create() uses 5 args, new 'drvdata' argument. | |
870 | dnl # | |
871 | AC_DEFUN([SPL_AC_5ARGS_DEVICE_CREATE], [ | |
872 | AC_MSG_CHECKING([whether device_create() wants 5 args]) | |
873 | tmp_flags="$EXTRA_KCFLAGS" | |
874 | EXTRA_KCFLAGS="-Werror" | |
875 | SPL_LINUX_TRY_COMPILE([ | |
876 | #include <linux/device.h> | |
877 | ],[ | |
878 | device_create(NULL, NULL, 0, NULL, "%d", 1); | |
879 | ],[ | |
880 | AC_MSG_RESULT(yes) | |
881 | AC_DEFINE(HAVE_5ARGS_DEVICE_CREATE, 1, | |
882 | [device_create wants 5 args]) | |
883 | ],[ | |
884 | AC_MSG_RESULT(no) | |
885 | ]) | |
886 | EXTRA_KCFLAGS="$tmp_flags" | |
887 | ]) | |
888 | ||
46c685d0 BB |
889 | dnl # |
890 | dnl # 2.6.13 API change, check whether class_device_create() is available. | |
891 | dnl # Class_device_create() was introduced in 2.6.13 and depricated | |
892 | dnl # class_simple_device_add() which was fully removed in 2.6.13. | |
893 | dnl # | |
894 | AC_DEFUN([SPL_AC_CLASS_DEVICE_CREATE], [ | |
895 | SPL_CHECK_SYMBOL_EXPORT( | |
896 | [class_device_create], | |
897 | [drivers/base/class.c], | |
898 | [AC_DEFINE(HAVE_CLASS_DEVICE_CREATE, 1, | |
899 | [class_device_create() is available])], | |
6a6cafbe | 900 | []) |
46c685d0 | 901 | ]) |
6a6cafbe | 902 | |
6a6cafbe BB |
903 | dnl # |
904 | dnl # 2.6.26 API change, set_normalized_timespec() is exported. | |
905 | dnl # | |
906 | AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT], [ | |
907 | SPL_CHECK_SYMBOL_EXPORT( | |
908 | [set_normalized_timespec], | |
909 | [kernel/time.c], | |
910 | [AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT, 1, | |
911 | [set_normalized_timespec() is available as export])], | |
912 | []) | |
913 | ]) | |
914 | ||
915 | dnl # | |
916 | dnl # 2.6.16 API change, set_normalize_timespec() moved to time.c | |
917 | dnl # previously it was available in time.h as an inline. | |
918 | dnl # | |
86de8532 BB |
919 | AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE], [ |
920 | AC_MSG_CHECKING([whether set_normalized_timespec() is an inline]) | |
6a6cafbe BB |
921 | SPL_LINUX_TRY_COMPILE([ |
922 | #include <linux/time.h> | |
6a6cafbe | 923 | void set_normalized_timespec(struct timespec *ts, |
25557fd8 BB |
924 | time_t sec, long nsec) { } |
925 | ], | |
926 | [], | |
927 | [ | |
6a6cafbe BB |
928 | AC_MSG_RESULT(no) |
929 | ],[ | |
930 | AC_MSG_RESULT(yes) | |
931 | AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_INLINE, 1, | |
932 | [set_normalized_timespec() is available as inline]) | |
933 | ]) | |
934 | ]) | |
935 | ||
936 | dnl # | |
937 | dnl # 2.6.18 API change, | |
938 | dnl # timespec_sub() inline function available in linux/time.h | |
939 | dnl # | |
86de8532 BB |
940 | AC_DEFUN([SPL_AC_TIMESPEC_SUB], [ |
941 | AC_MSG_CHECKING([whether timespec_sub() is available]) | |
6a6cafbe BB |
942 | SPL_LINUX_TRY_COMPILE([ |
943 | #include <linux/time.h> | |
944 | ],[ | |
945 | struct timespec a, b, c = { 0 }; | |
946 | c = timespec_sub(a, b); | |
947 | ],[ | |
948 | AC_MSG_RESULT(yes) | |
949 | AC_DEFINE(HAVE_TIMESPEC_SUB, 1, [timespec_sub() is available]) | |
950 | ],[ | |
951 | AC_MSG_RESULT(no) | |
952 | ]) | |
953 | ]) | |
954 | ||
86de8532 | 955 | dnl # |
3d061e9d BB |
956 | dnl # 2.6.19 API change, |
957 | dnl # check if init_utsname() is available in linux/utsname.h | |
958 | dnl # | |
959 | AC_DEFUN([SPL_AC_INIT_UTSNAME], [ | |
960 | AC_MSG_CHECKING([whether init_utsname() is available]) | |
961 | SPL_LINUX_TRY_COMPILE([ | |
962 | #include <linux/utsname.h> | |
963 | ],[ | |
964 | struct new_utsname *a = init_utsname(); | |
965 | ],[ | |
966 | AC_MSG_RESULT(yes) | |
967 | AC_DEFINE(HAVE_INIT_UTSNAME, 1, [init_utsname() is available]) | |
968 | ],[ | |
969 | AC_MSG_RESULT(no) | |
970 | ]) | |
971 | ]) | |
972 | ||
973 | dnl # | |
974 | dnl # 2.6.26 API change, | |
975 | dnl # definition of struct fdtable relocated to linux/fdtable.h | |
86de8532 BB |
976 | dnl # |
977 | AC_DEFUN([SPL_AC_FDTABLE_HEADER], [ | |
978 | SPL_CHECK_HEADER([linux/fdtable.h], [FDTABLE], [], []) | |
979 | ]) | |
322640b7 BB |
980 | |
981 | dnl # | |
3d061e9d BB |
982 | dnl # 2.6.14 API change, |
983 | dnl # check whether 'files_fdtable()' exists | |
984 | dnl # | |
985 | AC_DEFUN([SPL_AC_FILES_FDTABLE], [ | |
986 | AC_MSG_CHECKING([whether files_fdtable() is available]) | |
987 | SPL_LINUX_TRY_COMPILE([ | |
988 | #include <linux/sched.h> | |
989 | #include <linux/file.h> | |
990 | #ifdef HAVE_FDTABLE_HEADER | |
991 | #include <linux/fdtable.h> | |
992 | #endif | |
993 | ],[ | |
994 | struct files_struct *files = current->files; | |
995 | struct fdtable *fdt = files_fdtable(files); | |
996 | ],[ | |
997 | AC_MSG_RESULT(yes) | |
998 | AC_DEFINE(HAVE_FILES_FDTABLE, 1, [files_fdtable() is available]) | |
999 | ],[ | |
1000 | AC_MSG_RESULT(no) | |
1001 | ]) | |
1002 | ]) | |
1003 | ||
1004 | dnl # | |
1005 | dnl # 2.6.18 API change, | |
1006 | dnl # added linux/uaccess.h | |
322640b7 BB |
1007 | dnl # |
1008 | AC_DEFUN([SPL_AC_UACCESS_HEADER], [ | |
1009 | SPL_CHECK_HEADER([linux/uaccess.h], [UACCESS], [], []) | |
1010 | ]) | |
3d061e9d BB |
1011 | |
1012 | dnl # | |
1013 | dnl # 2.6.12 API change, | |
1014 | dnl # check whether 'kmalloc_node()' is available. | |
1015 | dnl # | |
1016 | AC_DEFUN([SPL_AC_KMALLOC_NODE], [ | |
1017 | AC_MSG_CHECKING([whether kmalloc_node() is available]) | |
1018 | SPL_LINUX_TRY_COMPILE([ | |
1019 | #include <linux/slab.h> | |
1020 | ],[ | |
1021 | void *a = kmalloc_node(1, GFP_KERNEL, 0); | |
1022 | ],[ | |
1023 | AC_MSG_RESULT(yes) | |
1024 | AC_DEFINE(HAVE_KMALLOC_NODE, 1, [kmalloc_node() is available]) | |
1025 | ],[ | |
1026 | AC_MSG_RESULT(no) | |
1027 | ]) | |
1028 | ]) | |
1029 | ||
1030 | dnl # | |
1031 | dnl # 2.6.9 API change, | |
1032 | dnl # check whether 'monotonic_clock()' is available it may | |
1033 | dnl # be available for some archs but not others. | |
1034 | dnl # | |
1035 | AC_DEFUN([SPL_AC_MONOTONIC_CLOCK], [ | |
1036 | SPL_CHECK_SYMBOL_EXPORT( | |
1037 | [monotonic_clock], | |
1038 | [], | |
1039 | [AC_DEFINE(HAVE_MONOTONIC_CLOCK, 1, | |
1040 | [monotonic_clock() is available])], | |
1041 | []) | |
1042 | ]) | |
1043 | ||
1044 | dnl # | |
1045 | dnl # 2.6.16 API change, | |
1046 | dnl # check whether 'struct inode' has i_mutex | |
1047 | dnl # | |
1048 | AC_DEFUN([SPL_AC_INODE_I_MUTEX], [ | |
1049 | AC_MSG_CHECKING([whether struct inode has i_mutex]) | |
1050 | SPL_LINUX_TRY_COMPILE([ | |
1051 | #include <linux/fs.h> | |
1052 | #include <linux/mutex.h> | |
1053 | ],[ | |
1054 | struct inode i; | |
1055 | mutex_init(&i.i_mutex); | |
1056 | ],[ | |
1057 | AC_MSG_RESULT(yes) | |
1058 | AC_DEFINE(HAVE_INODE_I_MUTEX, 1, [struct inode has i_mutex]) | |
1059 | ],[ | |
1060 | AC_MSG_RESULT(no) | |
1061 | ]) | |
1062 | ]) | |
b61a6e8b | 1063 | |
4d54fdee BB |
1064 | dnl # |
1065 | dnl # 2.6.29 API change, | |
1066 | dnl # Adaptive mutexs introduced. | |
1067 | dnl # | |
1068 | AC_DEFUN([SPL_AC_MUTEX_OWNER], [ | |
1069 | AC_MSG_CHECKING([whether struct mutex has owner]) | |
1070 | SPL_LINUX_TRY_COMPILE([ | |
1071 | #include <linux/mutex.h> | |
1072 | ],[ | |
1073 | struct mutex mtx; | |
1074 | mtx.owner = NULL; | |
1075 | ],[ | |
1076 | AC_MSG_RESULT(yes) | |
1077 | AC_DEFINE(HAVE_MUTEX_OWNER, 1, [struct mutex has owner]) | |
1078 | ],[ | |
1079 | AC_MSG_RESULT(no) | |
1080 | ]) | |
1081 | ]) | |
1082 | ||
6c9433c1 BB |
1083 | dnl # |
1084 | dnl # 2.6.18 API change, | |
1085 | dnl # First introduced 'mutex_lock_nested()' in include/linux/mutex.h, | |
1086 | dnl # as part of the mutex validator. Fallback to using 'mutex_lock()' | |
1087 | dnl # if the mutex validator is disabled or otherwise unavailable. | |
1088 | dnl # | |
1089 | AC_DEFUN([SPL_AC_MUTEX_LOCK_NESTED], [ | |
1090 | AC_MSG_CHECKING([whether mutex_lock_nested() is available]) | |
1091 | SPL_LINUX_TRY_COMPILE([ | |
1092 | #include <linux/mutex.h> | |
1093 | ],[ | |
1094 | struct mutex mutex; | |
1095 | mutex_init(&mutex); | |
1096 | mutex_lock_nested(&mutex, 0); | |
1097 | ],[ | |
1098 | AC_MSG_RESULT(yes) | |
1099 | AC_DEFINE(HAVE_MUTEX_LOCK_NESTED, 1, | |
1100 | [mutex_lock_nested() is available]) | |
1101 | ],[ | |
1102 | AC_MSG_RESULT(no) | |
1103 | ]) | |
1104 | ]) | |
1105 | ||
31a033ec BB |
1106 | dnl # |
1107 | dnl # 2.6.27 API change, | |
1108 | dnl # on_each_cpu() uses 3 args, no 'retry' argument | |
1109 | dnl # | |
1110 | AC_DEFUN([SPL_AC_3ARGS_ON_EACH_CPU], [ | |
1111 | AC_MSG_CHECKING([whether on_each_cpu() wants 3 args]) | |
1112 | SPL_LINUX_TRY_COMPILE([ | |
1113 | #include <linux/smp.h> | |
1114 | ],[ | |
1115 | on_each_cpu(NULL, NULL, 0); | |
1116 | ],[ | |
1117 | AC_MSG_RESULT(yes) | |
1118 | AC_DEFINE(HAVE_3ARGS_ON_EACH_CPU, 1, | |
1119 | [on_each_cpu wants 3 args]) | |
1120 | ],[ | |
1121 | AC_MSG_RESULT(no) | |
1122 | ]) | |
1123 | ]) | |
36b313da BB |
1124 | |
1125 | dnl # | |
d1ff2312 BB |
1126 | dnl # 2.6.18 API change, |
1127 | dnl # kallsyms_lookup_name no longer exported | |
1128 | dnl # | |
1129 | AC_DEFUN([SPL_AC_KALLSYMS_LOOKUP_NAME], [ | |
1130 | SPL_CHECK_SYMBOL_EXPORT( | |
1131 | [kallsyms_lookup_name], | |
1132 | [], | |
1133 | [AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1, | |
1134 | [kallsyms_lookup_name() is available])], | |
1135 | []) | |
1136 | ]) | |
1137 | ||
1138 | dnl # | |
e11d6c5f BB |
1139 | dnl # Proposed API change, |
1140 | dnl # This symbol is not available in stock kernels. You may build a | |
1141 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1142 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1143 | dnl # your environment this is recommended. | |
d1ff2312 BB |
1144 | dnl # |
1145 | AC_DEFUN([SPL_AC_GET_VMALLOC_INFO], [ | |
1146 | SPL_CHECK_SYMBOL_EXPORT( | |
1147 | [get_vmalloc_info], | |
1148 | [], | |
1149 | [AC_DEFINE(HAVE_GET_VMALLOC_INFO, 1, | |
1150 | [get_vmalloc_info() is available])], | |
1151 | []) | |
1152 | ]) | |
1153 | ||
5232d256 BB |
1154 | dnl # |
1155 | dnl # 2.6.17 API change | |
1156 | dnl # The helper functions first_online_pgdat(), next_online_pgdat(), and | |
1157 | dnl # next_zone() are introduced to simplify for_each_zone(). These symbols | |
1158 | dnl # were exported in 2.6.17 for use by modules which was consistent with | |
1159 | dnl # the previous implementation of for_each_zone(). From 2.6.18 - 2.6.19 | |
1160 | dnl # the symbols were exported as 'unused', and by 2.6.20 they exports | |
1161 | dnl # were dropped entirely leaving modules no way to directly iterate over | |
1162 | dnl # the zone list. Because we need access to the zone helpers we check | |
1163 | dnl # if the kernel contains the old or new implementation. Then we check | |
1164 | dnl # to see if the symbols we need for each version are available. If they | |
1165 | dnl # are not, dynamically aquire the addresses with kallsyms_lookup_name(). | |
1166 | dnl # | |
1167 | AC_DEFUN([SPL_AC_PGDAT_HELPERS], [ | |
1168 | AC_MSG_CHECKING([whether symbol *_pgdat exist]) | |
1169 | grep -q -E 'first_online_pgdat' $LINUX/include/linux/mmzone.h 2>/dev/null | |
1170 | rc=$? | |
1171 | if test $rc -eq 0; then | |
1172 | AC_MSG_RESULT([yes]) | |
1173 | AC_DEFINE(HAVE_PGDAT_HELPERS, 1, [pgdat helpers are available]) | |
1174 | else | |
1175 | AC_MSG_RESULT([no]) | |
1176 | fi | |
1177 | ]) | |
1178 | ||
d1ff2312 | 1179 | dnl # |
e11d6c5f BB |
1180 | dnl # Proposed API change, |
1181 | dnl # This symbol is not available in stock kernels. You may build a | |
1182 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1183 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1184 | dnl # your environment this is recommended. | |
36b313da BB |
1185 | dnl # |
1186 | AC_DEFUN([SPL_AC_FIRST_ONLINE_PGDAT], [ | |
1187 | SPL_CHECK_SYMBOL_EXPORT( | |
1188 | [first_online_pgdat], | |
1189 | [], | |
1190 | [AC_DEFINE(HAVE_FIRST_ONLINE_PGDAT, 1, | |
1191 | [first_online_pgdat() is available])], | |
1192 | []) | |
1193 | ]) | |
1194 | ||
1195 | dnl # | |
e11d6c5f BB |
1196 | dnl # Proposed API change, |
1197 | dnl # This symbol is not available in stock kernels. You may build a | |
1198 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1199 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1200 | dnl # your environment this is recommended. | |
36b313da BB |
1201 | dnl # |
1202 | AC_DEFUN([SPL_AC_NEXT_ONLINE_PGDAT], [ | |
1203 | SPL_CHECK_SYMBOL_EXPORT( | |
1204 | [next_online_pgdat], | |
1205 | [], | |
1206 | [AC_DEFINE(HAVE_NEXT_ONLINE_PGDAT, 1, | |
1207 | [next_online_pgdat() is available])], | |
1208 | []) | |
1209 | ]) | |
1210 | ||
1211 | dnl # | |
e11d6c5f BB |
1212 | dnl # Proposed API change, |
1213 | dnl # This symbol is not available in stock kernels. You may build a | |
1214 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1215 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1216 | dnl # your environment this is recommended. | |
36b313da BB |
1217 | dnl # |
1218 | AC_DEFUN([SPL_AC_NEXT_ZONE], [ | |
1219 | SPL_CHECK_SYMBOL_EXPORT( | |
1220 | [next_zone], | |
1221 | [], | |
1222 | [AC_DEFINE(HAVE_NEXT_ZONE, 1, | |
1223 | [next_zone() is available])], | |
1224 | []) | |
1225 | ]) | |
4ab13d3b | 1226 | |
5232d256 BB |
1227 | dnl # |
1228 | dnl # 2.6.17 API change, | |
1229 | dnl # See SPL_AC_PGDAT_HELPERS for details. | |
1230 | dnl # | |
1231 | AC_DEFUN([SPL_AC_PGDAT_LIST], [ | |
1232 | SPL_CHECK_SYMBOL_EXPORT( | |
1233 | [pgdat_list], | |
1234 | [], | |
1235 | [AC_DEFINE(HAVE_PGDAT_LIST, 1, | |
1236 | [pgdat_list is available])], | |
1237 | []) | |
1238 | ]) | |
1239 | ||
96dded38 BB |
1240 | dnl # |
1241 | dnl # 2.6.18 API change, | |
1242 | dnl # First introduced global_page_state() support as an inline. | |
1243 | dnl # | |
1244 | AC_DEFUN([SPL_AC_GLOBAL_PAGE_STATE], [ | |
1245 | AC_MSG_CHECKING([whether global_page_state() is available]) | |
1246 | SPL_LINUX_TRY_COMPILE([ | |
6ae7fef5 | 1247 | #include <linux/mm.h> |
96dded38 BB |
1248 | ],[ |
1249 | unsigned long state; | |
6ae7fef5 | 1250 | state = global_page_state(0); |
96dded38 BB |
1251 | ],[ |
1252 | AC_MSG_RESULT(yes) | |
1253 | AC_DEFINE(HAVE_GLOBAL_PAGE_STATE, 1, | |
1254 | [global_page_state() is available]) | |
1255 | ],[ | |
1256 | AC_MSG_RESULT(no) | |
1257 | ]) | |
1258 | ]) | |
1259 | ||
e11d6c5f | 1260 | dnl # |
6ae7fef5 BB |
1261 | dnl # 2.6.21 API change (plus subsequent naming convention changes), |
1262 | dnl # Public global zone stats now include a free page count. However | |
1263 | dnl # the enumerated names of the counters have changed since this API | |
1264 | dnl # was introduced. We need to deduce the corrent name to use. This | |
1265 | dnl # replaces the priviate get_zone_counts() interface. | |
1266 | dnl # | |
1267 | dnl # NR_FREE_PAGES was available from 2.6.21 to current kernels, which | |
1268 | dnl # is 2.6.30 as of when this was written. | |
e11d6c5f | 1269 | dnl # |
6ae7fef5 BB |
1270 | AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_FREE], [ |
1271 | AC_MSG_CHECKING([whether page state NR_FREE_PAGES is available]) | |
e11d6c5f | 1272 | SPL_LINUX_TRY_COMPILE([ |
6ae7fef5 | 1273 | #include <linux/mm.h> |
e11d6c5f | 1274 | ],[ |
6ae7fef5 BB |
1275 | enum zone_stat_item zsi; |
1276 | zsi = NR_FREE_PAGES; | |
e11d6c5f BB |
1277 | ],[ |
1278 | AC_MSG_RESULT(yes) | |
6ae7fef5 BB |
1279 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES, 1, |
1280 | [Page state NR_FREE_PAGES is available]) | |
e11d6c5f BB |
1281 | ],[ |
1282 | AC_MSG_RESULT(no) | |
1283 | ]) | |
1284 | ]) | |
a093c6a4 | 1285 | |
6ae7fef5 BB |
1286 | dnl # |
1287 | dnl # 2.6.21 API change (plus subsequent naming convention changes), | |
1288 | dnl # Public global zone stats now include an inactive page count. However | |
1289 | dnl # the enumerated names of the counters have changed since this API | |
1290 | dnl # was introduced. We need to deduce the corrent name to use. This | |
1291 | dnl # replaces the priviate get_zone_counts() interface. | |
1292 | dnl # | |
1293 | dnl # NR_INACTIVE was available from 2.6.21 to 2.6.27 and included both | |
1294 | dnl # anonymous and file inactive pages. As of 2.6.28 it was split in | |
1295 | dnl # to NR_INACTIVE_ANON and NR_INACTIVE_FILE. | |
1296 | dnl # | |
1297 | AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_INACTIVE], [ | |
1298 | AC_MSG_CHECKING([whether page state NR_INACTIVE is available]) | |
1299 | SPL_LINUX_TRY_COMPILE([ | |
1300 | #include <linux/mm.h> | |
1301 | ],[ | |
1302 | enum zone_stat_item zsi; | |
1303 | zsi = NR_INACTIVE; | |
1304 | ],[ | |
1305 | AC_MSG_RESULT(yes) | |
1306 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE, 1, | |
1307 | [Page state NR_INACTIVE is available]) | |
1308 | ],[ | |
1309 | AC_MSG_RESULT(no) | |
1310 | ]) | |
1311 | ||
1312 | AC_MSG_CHECKING([whether page state NR_INACTIVE_ANON is available]) | |
1313 | SPL_LINUX_TRY_COMPILE([ | |
1314 | #include <linux/mm.h> | |
1315 | ],[ | |
1316 | enum zone_stat_item zsi; | |
1317 | zsi = NR_INACTIVE_ANON; | |
1318 | ],[ | |
1319 | AC_MSG_RESULT(yes) | |
1320 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON, 1, | |
1321 | [Page state NR_INACTIVE_ANON is available]) | |
1322 | ],[ | |
1323 | AC_MSG_RESULT(no) | |
1324 | ]) | |
1325 | ||
1326 | AC_MSG_CHECKING([whether page state NR_INACTIVE_FILE is available]) | |
1327 | SPL_LINUX_TRY_COMPILE([ | |
1328 | #include <linux/mm.h> | |
1329 | ],[ | |
1330 | enum zone_stat_item zsi; | |
1331 | zsi = NR_INACTIVE_FILE; | |
1332 | ],[ | |
1333 | AC_MSG_RESULT(yes) | |
1334 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE, 1, | |
1335 | [Page state NR_INACTIVE_FILE is available]) | |
1336 | ],[ | |
1337 | AC_MSG_RESULT(no) | |
1338 | ]) | |
1339 | ]) | |
1340 | ||
1341 | dnl # | |
1342 | dnl # 2.6.21 API change (plus subsequent naming convention changes), | |
1343 | dnl # Public global zone stats now include an active page count. However | |
1344 | dnl # the enumerated names of the counters have changed since this API | |
1345 | dnl # was introduced. We need to deduce the corrent name to use. This | |
1346 | dnl # replaces the priviate get_zone_counts() interface. | |
1347 | dnl # | |
1348 | dnl # NR_ACTIVE was available from 2.6.21 to 2.6.27 and included both | |
1349 | dnl # anonymous and file active pages. As of 2.6.28 it was split in | |
1350 | dnl # to NR_ACTIVE_ANON and NR_ACTIVE_FILE. | |
1351 | dnl # | |
1352 | AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_ACTIVE], [ | |
1353 | AC_MSG_CHECKING([whether page state NR_ACTIVE is available]) | |
1354 | SPL_LINUX_TRY_COMPILE([ | |
1355 | #include <linux/mm.h> | |
1356 | ],[ | |
1357 | enum zone_stat_item zsi; | |
1358 | zsi = NR_ACTIVE; | |
1359 | ],[ | |
1360 | AC_MSG_RESULT(yes) | |
1361 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE, 1, | |
1362 | [Page state NR_ACTIVE is available]) | |
1363 | ],[ | |
1364 | AC_MSG_RESULT(no) | |
1365 | ]) | |
1366 | ||
1367 | AC_MSG_CHECKING([whether page state NR_ACTIVE_ANON is available]) | |
1368 | SPL_LINUX_TRY_COMPILE([ | |
1369 | #include <linux/mm.h> | |
1370 | ],[ | |
1371 | enum zone_stat_item zsi; | |
1372 | zsi = NR_ACTIVE_ANON; | |
1373 | ],[ | |
1374 | AC_MSG_RESULT(yes) | |
1375 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON, 1, | |
1376 | [Page state NR_ACTIVE_ANON is available]) | |
1377 | ],[ | |
1378 | AC_MSG_RESULT(no) | |
1379 | ]) | |
1380 | ||
1381 | AC_MSG_CHECKING([whether page state NR_ACTIVE_FILE is available]) | |
1382 | SPL_LINUX_TRY_COMPILE([ | |
1383 | #include <linux/mm.h> | |
1384 | ],[ | |
1385 | enum zone_stat_item zsi; | |
1386 | zsi = NR_ACTIVE_FILE; | |
1387 | ],[ | |
1388 | AC_MSG_RESULT(yes) | |
1389 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE, 1, | |
1390 | [Page state NR_ACTIVE_FILE is available]) | |
1391 | ],[ | |
1392 | AC_MSG_RESULT(no) | |
1393 | ]) | |
1394 | ]) | |
1395 | ||
1396 | dnl # | |
1397 | dnl # Proposed API change for legacy kernels. | |
1398 | dnl # This symbol is not available in older kernels. For kernels post | |
1399 | dnl # 2.6.21 the global_page_state() API is used to get free/inactive/active | |
1400 | dnl # page state information. This symbol is only used in legacy kernels | |
1401 | dnl # any only as a last resort. | |
1402 | dnl | |
1403 | AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [ | |
1404 | AC_MSG_CHECKING([whether symbol get_zone_counts is needed]) | |
1405 | SPL_LINUX_TRY_COMPILE([ | |
1406 | ],[ | |
1407 | #if !defined(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES) | |
1408 | #error "global_page_state needs NR_FREE_PAGES" | |
1409 | #endif | |
1410 | ||
1411 | #if !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE) && \ | |
1412 | !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON) && \ | |
1413 | !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE) | |
1414 | #error "global_page_state needs NR_ACTIVE*" | |
1415 | #endif | |
1416 | ||
1417 | #if !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE) && \ | |
1418 | !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON) && \ | |
1419 | !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE) | |
1420 | #error "global_page_state needs NR_INACTIVE*" | |
1421 | #endif | |
1422 | ],[ | |
1423 | AC_MSG_RESULT(no) | |
1424 | ],[ | |
1425 | AC_MSG_RESULT(yes) | |
1426 | AC_DEFINE(NEED_GET_ZONE_COUNTS, 1, | |
1427 | [get_zone_counts() is needed]) | |
1428 | ||
1429 | SPL_CHECK_SYMBOL_EXPORT( | |
1430 | [get_zone_counts], | |
1431 | [], | |
1432 | [AC_DEFINE(HAVE_GET_ZONE_COUNTS, 1, | |
1433 | [get_zone_counts() is available])], | |
1434 | []) | |
1435 | ]) | |
1436 | ]) | |
1437 | ||
7119bf70 BB |
1438 | dnl # |
1439 | dnl # 2.6.27 API change, | |
1440 | dnl # The user_path_dir() replaces __user_walk() | |
1441 | dnl # | |
1442 | AC_DEFUN([SPL_AC_USER_PATH_DIR], [ | |
1443 | SPL_CHECK_SYMBOL_EXPORT( | |
1444 | [user_path_at], | |
1445 | [], | |
1446 | [AC_DEFINE(HAVE_USER_PATH_DIR, 1, | |
1447 | [user_path_dir() is available])], | |
1448 | []) | |
1449 | ]) | |
1450 | ||
51a727e9 BB |
1451 | dnl # |
1452 | dnl # Symbol available in RHEL kernels not in stock kernels. | |
1453 | dnl # | |
1454 | AC_DEFUN([SPL_AC_SET_FS_PWD], [ | |
1455 | SPL_CHECK_SYMBOL_EXPORT( | |
1456 | [set_fs_pwd], | |
1457 | [], | |
1458 | [AC_DEFINE(HAVE_SET_FS_PWD, 1, | |
1459 | [set_fs_pwd() is available])], | |
1460 | []) | |
1461 | ]) | |
1462 | ||
1463 | dnl # | |
1464 | dnl # 2.6.25 API change, | |
1465 | dnl # Simplied API by replacing mnt+dentry args with a single path arg. | |
1466 | dnl # | |
1467 | AC_DEFUN([SPL_AC_2ARGS_SET_FS_PWD], | |
1468 | [AC_MSG_CHECKING([whether set_fs_pwd() wants 2 args]) | |
1469 | SPL_LINUX_TRY_COMPILE([ | |
1470 | #include <linux/sched.h> | |
baf2979e | 1471 | #include <linux/fs_struct.h> |
51a727e9 BB |
1472 | ],[ |
1473 | set_fs_pwd(NULL, NULL); | |
1474 | ],[ | |
1475 | AC_MSG_RESULT(yes) | |
1476 | AC_DEFINE(HAVE_2ARGS_SET_FS_PWD, 1, | |
1477 | [set_fs_pwd() wants 2 args]) | |
1478 | ],[ | |
1479 | AC_MSG_RESULT(no) | |
1480 | ]) | |
1481 | ]) | |
1482 | ||
a093c6a4 BB |
1483 | dnl # |
1484 | dnl # SLES API change, never adopted in mainline, | |
1485 | dnl # Third 'struct vfsmount *' argument removed. | |
1486 | dnl # | |
1487 | AC_DEFUN([SPL_AC_2ARGS_VFS_UNLINK], | |
1488 | [AC_MSG_CHECKING([whether vfs_unlink() wants 2 args]) | |
1489 | SPL_LINUX_TRY_COMPILE([ | |
1490 | #include <linux/fs.h> | |
1491 | ],[ | |
1492 | vfs_unlink(NULL, NULL); | |
1493 | ],[ | |
1494 | AC_MSG_RESULT(yes) | |
1495 | AC_DEFINE(HAVE_2ARGS_VFS_UNLINK, 1, | |
1496 | [vfs_unlink() wants 2 args]) | |
1497 | ],[ | |
1498 | AC_MSG_RESULT(no) | |
1499 | ]) | |
1500 | ]) | |
1501 | ||
1502 | dnl # | |
1503 | dnl # SLES API change, never adopted in mainline, | |
1504 | dnl # Third and sixth 'struct vfsmount *' argument removed. | |
1505 | dnl # | |
1506 | AC_DEFUN([SPL_AC_4ARGS_VFS_RENAME], | |
1507 | [AC_MSG_CHECKING([whether vfs_rename() wants 4 args]) | |
1508 | SPL_LINUX_TRY_COMPILE([ | |
1509 | #include <linux/fs.h> | |
1510 | ],[ | |
1511 | vfs_rename(NULL, NULL, NULL, NULL); | |
1512 | ],[ | |
1513 | AC_MSG_RESULT(yes) | |
1514 | AC_DEFINE(HAVE_4ARGS_VFS_RENAME, 1, | |
1515 | [vfs_rename() wants 4 args]) | |
1516 | ],[ | |
1517 | AC_MSG_RESULT(no) | |
1518 | ]) | |
1519 | ]) | |
ec7d53e9 BB |
1520 | |
1521 | dnl # | |
1522 | dnl # 2.6.29 API change, | |
1523 | dnl # check whether 'struct cred' exists | |
1524 | dnl # | |
1525 | AC_DEFUN([SPL_AC_CRED_STRUCT], [ | |
1526 | AC_MSG_CHECKING([whether struct cred exists]) | |
1527 | SPL_LINUX_TRY_COMPILE([ | |
1528 | #include <linux/cred.h> | |
1529 | ],[ | |
1530 | struct cred *cr; | |
1531 | cr = NULL; | |
1532 | ],[ | |
1533 | AC_MSG_RESULT(yes) | |
1534 | AC_DEFINE(HAVE_CRED_STRUCT, 1, [struct cred exists]) | |
1535 | ],[ | |
1536 | AC_MSG_RESULT(no) | |
1537 | ]) | |
1538 | ]) | |
1539 | ||
1540 | dnl # | |
e811949a | 1541 | dnl # Custom SPL patch may export this symbol. |
ec7d53e9 BB |
1542 | dnl # |
1543 | AC_DEFUN([SPL_AC_GROUPS_SEARCH], [ | |
1544 | SPL_CHECK_SYMBOL_EXPORT( | |
1545 | [groups_search], | |
1546 | [], | |
1547 | [AC_DEFINE(HAVE_GROUPS_SEARCH, 1, | |
1548 | [groups_search() is available])], | |
1549 | []) | |
1550 | ]) | |
e811949a BB |
1551 | |
1552 | dnl # | |
1553 | dnl # 2.6.x API change, | |
1554 | dnl # __put_task_struct() was exported in RHEL5 but unavailable elsewhere. | |
1555 | dnl # | |
1556 | AC_DEFUN([SPL_AC_PUT_TASK_STRUCT], [ | |
1557 | SPL_CHECK_SYMBOL_EXPORT( | |
1558 | [__put_task_struct], | |
1559 | [], | |
1560 | [AC_DEFINE(HAVE_PUT_TASK_STRUCT, 1, | |
1561 | [__put_task_struct() is available])], | |
1562 | []) | |
1563 | ]) | |
3977f837 BB |
1564 | |
1565 | dnl # | |
1566 | dnl # 2.6.32 API change, | |
1567 | dnl # Unused 'struct file *' removed from prototype. | |
1568 | dnl # | |
1569 | AC_DEFUN([SPL_AC_5ARGS_PROC_HANDLER], [ | |
1570 | AC_MSG_CHECKING([whether proc_handler() wants 5 args]) | |
1571 | SPL_LINUX_TRY_COMPILE([ | |
1572 | #include <linux/sysctl.h> | |
1573 | ],[ | |
1574 | proc_dostring(NULL, 0, NULL, NULL, NULL); | |
1575 | ],[ | |
1576 | AC_MSG_RESULT(yes) | |
1577 | AC_DEFINE(HAVE_5ARGS_PROC_HANDLER, 1, | |
1578 | [proc_handler() wants 5 args]) | |
1579 | ],[ | |
1580 | AC_MSG_RESULT(no) | |
1581 | ]) | |
1582 | ]) | |
b868e22f BB |
1583 | |
1584 | dnl # | |
1585 | dnl # 2.6.x API change, | |
1586 | dnl # kvasprintf() function added. | |
1587 | dnl # | |
1588 | AC_DEFUN([SPL_AC_KVASPRINTF], [ | |
1589 | SPL_CHECK_SYMBOL_EXPORT( | |
1590 | [kvasprintf], | |
1591 | [], | |
1592 | [AC_DEFINE(HAVE_KVASPRINTF, 1, | |
1593 | [kvasprintf() is available])], | |
1594 | []) | |
1595 | ]) | |
f0ff89fc BB |
1596 | |
1597 | dnl # | |
1598 | dnl # 2.6.35 API change, | |
1599 | dnl # Unused 'struct dentry *' removed from prototype. | |
1600 | dnl # | |
1601 | AC_DEFUN([SPL_AC_3ARGS_FILE_FSYNC], [ | |
1602 | AC_MSG_CHECKING([whether file_fsync() wants 3 args]) | |
1603 | SPL_LINUX_TRY_COMPILE([ | |
1604 | #include <linux/buffer_head.h> | |
1605 | ],[ | |
1606 | file_fsync(NULL, NULL, 0); | |
1607 | ],[ | |
1608 | AC_MSG_RESULT(yes) | |
1609 | AC_DEFINE(HAVE_3ARGS_FILE_FSYNC, 1, | |
1610 | [file_fsync() wants 3 args]) | |
1611 | ],[ | |
1612 | AC_MSG_RESULT(no) | |
1613 | ]) | |
1614 | ]) | |
46aa7b39 NB |
1615 | |
1616 | dnl # | |
1617 | dnl # 2.6.33 API change. Also backported in RHEL5 as of 2.6.18-190.el5. | |
1618 | dnl # Earlier versions of rwsem_is_locked() were inline and had a race | |
1619 | dnl # condition. The fixed version is exported as a symbol. The race | |
1620 | dnl # condition is fixed by acquiring sem->wait_lock, so we must not | |
1621 | dnl # call that version while holding sem->wait_lock. | |
1622 | dnl # | |
1623 | AC_DEFUN([SPL_AC_EXPORTED_RWSEM_IS_LOCKED], [ | |
1624 | SPL_CHECK_SYMBOL_EXPORT( | |
1625 | [rwsem_is_locked], | |
1626 | [lib/rwsem-spinlock.c], | |
1627 | [AC_DEFINE(RWSEM_IS_LOCKED_TAKES_WAIT_LOCK, 1, | |
1628 | [rwsem_is_locked() acquires sem->wait_lock])], | |
1629 | []) | |
1630 | ]) |