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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 | dnl # -Wall -fno-strict-aliasing -Wstrict-prototypes and other |
13 | dnl # compiler options are added by the kernel build system. | |
14 | abs_srcdir=`readlink -f ${srcdir}` | |
c950d148 | 15 | KERNELCPPFLAGS="$KERNELCPPFLAGS -Wstrict-prototypes" |
16b719f0 BB |
16 | KERNELCPPFLAGS="$KERNELCPPFLAGS -I${abs_srcdir}/include" |
17 | KERNELCPPFLAGS="$KERNELCPPFLAGS -include ${abs_srcdir}/spl_config.h" | |
86933a6e BB |
18 | |
19 | if test "${LINUX_OBJ}" != "${LINUX}"; then | |
20 | KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ" | |
21 | fi | |
22 | ||
23 | AC_SUBST(KERNELMAKE_PARAMS) | |
24 | AC_SUBST(KERNELCPPFLAGS) | |
25 | ||
26 | SPL_AC_DEBUG | |
27 | SPL_AC_DEBUG_KMEM | |
055ffd98 | 28 | SPL_AC_DEBUG_KMEM_TRACKING |
5e9b5d83 | 29 | SPL_AC_ATOMIC_SPINLOCK |
302b88e6 BB |
30 | SPL_AC_TYPE_ATOMIC64_CMPXCHG |
31 | SPL_AC_TYPE_ATOMIC64_XCHG | |
d04c8a56 | 32 | SPL_AC_TYPE_UINTPTR_T |
86933a6e BB |
33 | SPL_AC_3ARGS_INIT_WORK |
34 | SPL_AC_2ARGS_REGISTER_SYSCTL | |
35 | SPL_AC_SET_SHRINKER | |
36 | SPL_AC_PATH_IN_NAMEIDATA | |
37 | SPL_AC_TASK_CURR | |
38 | SPL_AC_CTL_UNNUMBERED | |
79a3bf13 | 39 | SPL_AC_CTL_NAME |
86933a6e BB |
40 | SPL_AC_FLS64 |
41 | SPL_AC_DEVICE_CREATE | |
42 | SPL_AC_5ARGS_DEVICE_CREATE | |
43 | SPL_AC_CLASS_DEVICE_CREATE | |
44 | SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT | |
45 | SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE | |
46 | SPL_AC_TIMESPEC_SUB | |
47 | SPL_AC_INIT_UTSNAME | |
48 | SPL_AC_FDTABLE_HEADER | |
49 | SPL_AC_FILES_FDTABLE | |
50 | SPL_AC_UACCESS_HEADER | |
51 | SPL_AC_KMALLOC_NODE | |
52 | SPL_AC_MONOTONIC_CLOCK | |
53 | SPL_AC_INODE_I_MUTEX | |
4d54fdee | 54 | SPL_AC_MUTEX_OWNER |
86933a6e | 55 | SPL_AC_MUTEX_LOCK_NESTED |
86933a6e BB |
56 | SPL_AC_3ARGS_ON_EACH_CPU |
57 | SPL_AC_KALLSYMS_LOOKUP_NAME | |
58 | SPL_AC_GET_VMALLOC_INFO | |
59 | SPL_AC_PGDAT_HELPERS | |
60 | SPL_AC_FIRST_ONLINE_PGDAT | |
61 | SPL_AC_NEXT_ONLINE_PGDAT | |
62 | SPL_AC_NEXT_ZONE | |
63 | SPL_AC_PGDAT_LIST | |
86933a6e | 64 | SPL_AC_GLOBAL_PAGE_STATE |
6ae7fef5 BB |
65 | SPL_AC_ZONE_STAT_ITEM_FREE |
66 | SPL_AC_ZONE_STAT_ITEM_INACTIVE | |
67 | SPL_AC_ZONE_STAT_ITEM_ACTIVE | |
68 | SPL_AC_GET_ZONE_COUNTS | |
7119bf70 | 69 | SPL_AC_USER_PATH_DIR |
51a727e9 BB |
70 | SPL_AC_SET_FS_PWD |
71 | SPL_AC_2ARGS_SET_FS_PWD | |
86933a6e BB |
72 | SPL_AC_2ARGS_VFS_UNLINK |
73 | SPL_AC_4ARGS_VFS_RENAME | |
ec7d53e9 BB |
74 | SPL_AC_CRED_STRUCT |
75 | SPL_AC_GROUPS_SEARCH | |
e811949a | 76 | SPL_AC_PUT_TASK_STRUCT |
3977f837 | 77 | SPL_AC_5ARGS_PROC_HANDLER |
b868e22f | 78 | SPL_AC_KVASPRINTF |
f0ff89fc | 79 | SPL_AC_3ARGS_FILE_FSYNC |
86933a6e BB |
80 | ]) |
81 | ||
82 | AC_DEFUN([SPL_AC_MODULE_SYMVERS], [ | |
bb339d06 | 83 | modpost=$LINUX/scripts/Makefile.modpost |
86933a6e | 84 | AC_MSG_CHECKING([kernel file name for module symbols]) |
bb339d06 BB |
85 | if test -f "$modpost"; then |
86 | if grep -q Modules.symvers $modpost; then | |
87 | LINUX_SYMBOLS=Modules.symvers | |
88 | else | |
89 | LINUX_SYMBOLS=Module.symvers | |
90 | fi | |
86933a6e | 91 | else |
bb339d06 | 92 | LINUX_SYMBOLS=NONE |
86933a6e BB |
93 | fi |
94 | AC_MSG_RESULT($LINUX_SYMBOLS) | |
95 | AC_SUBST(LINUX_SYMBOLS) | |
96 | ]) | |
97 | ||
57d86234 | 98 | AC_DEFUN([SPL_AC_KERNEL], [ |
57d86234 BB |
99 | AC_ARG_WITH([linux], |
100 | AS_HELP_STRING([--with-linux=PATH], | |
101 | [Path to kernel source]), | |
39a3d2a4 | 102 | [kernelsrc="$withval"]) |
57d86234 BB |
103 | |
104 | AC_ARG_WITH([linux-obj], | |
105 | AS_HELP_STRING([--with-linux-obj=PATH], | |
106 | [Path to kernel build objects]), | |
107 | [kernelbuild="$withval"]) | |
108 | ||
109 | AC_MSG_CHECKING([kernel source directory]) | |
110 | if test -z "$kernelsrc"; then | |
534c4e38 BM |
111 | headersdir="/lib/modules/$(uname -r)/build" |
112 | if test -e "$headersdir"; then | |
113 | sourcelink=$(readlink -f "$headersdir") | |
114 | else | |
115 | sourcelink=$(ls -1d /usr/src/kernels/* \ | |
116 | /usr/src/linux-* \ | |
117 | 2>/dev/null | grep -v obj | tail -1) | |
118 | fi | |
57d86234 | 119 | |
8fd4e3af | 120 | if test -n "$sourcelink" && test -e ${sourcelink}; then |
d4326403 | 121 | kernelsrc=`readlink -f ${sourcelink}` |
d4326403 | 122 | else |
57d86234 BB |
123 | AC_MSG_RESULT([Not found]) |
124 | AC_MSG_ERROR([ | |
8fd4e3af BB |
125 | *** Please make sure the kernel devel package for your distribution |
126 | *** is installed then try again. If that fails you can specify the | |
127 | *** location of the kernel source with the '--with-linux=PATH' option.]) | |
57d86234 | 128 | fi |
c5f70460 BB |
129 | else |
130 | if test "$kernelsrc" = "NONE"; then | |
131 | kernsrcver=NONE | |
132 | fi | |
57d86234 BB |
133 | fi |
134 | ||
135 | AC_MSG_RESULT([$kernelsrc]) | |
136 | AC_MSG_CHECKING([kernel build directory]) | |
39a3d2a4 | 137 | if test -z "$kernelbuild"; then |
e2d28a37 BB |
138 | if test -d ${kernelsrc}-obj/${target_cpu}/${target_cpu}; then |
139 | kernelbuild=${kernelsrc}-obj/${target_cpu}/${target_cpu} | |
140 | elif test -d ${kernelsrc}-obj/${target_cpu}/default; then | |
141 | kernelbuild=${kernelsrc}-obj/${target_cpu}/default | |
142 | elif test -d `dirname ${kernelsrc}`/build-${target_cpu}; then | |
143 | kernelbuild=`dirname ${kernelsrc}`/build-${target_cpu} | |
39a3d2a4 BB |
144 | else |
145 | kernelbuild=${kernelsrc} | |
146 | fi | |
bf338d8d | 147 | fi |
57d86234 BB |
148 | AC_MSG_RESULT([$kernelbuild]) |
149 | ||
150 | AC_MSG_CHECKING([kernel source version]) | |
fd921c2e BB |
151 | utsrelease1=$kernelbuild/include/linux/version.h |
152 | utsrelease2=$kernelbuild/include/linux/utsrelease.h | |
153 | utsrelease3=$kernelbuild/include/generated/utsrelease.h | |
154 | if test -r $utsrelease1 && fgrep -q UTS_RELEASE $utsrelease1; then | |
155 | utsrelease=linux/version.h | |
156 | elif test -r $utsrelease2 && fgrep -q UTS_RELEASE $utsrelease2; then | |
157 | utsrelease=linux/utsrelease.h | |
158 | elif test -r $utsrelease3 && fgrep -q UTS_RELEASE $utsrelease3; then | |
159 | utsrelease=generated/utsrelease.h | |
160 | fi | |
57d86234 | 161 | |
fd921c2e BB |
162 | if test "$utsrelease"; then |
163 | kernsrcver=`(echo "#include <$utsrelease>"; | |
57d86234 | 164 | echo "kernsrcver=UTS_RELEASE") | |
d4326403 | 165 | cpp -I $kernelbuild/include | |
57d86234 | 166 | grep "^kernsrcver=" | cut -d \" -f 2` |
57d86234 | 167 | |
fd921c2e BB |
168 | if test -z "$kernsrcver"; then |
169 | AC_MSG_RESULT([Not found]) | |
170 | AC_MSG_ERROR([*** Cannot determine kernel version.]) | |
171 | fi | |
172 | else | |
57d86234 | 173 | AC_MSG_RESULT([Not found]) |
fd921c2e | 174 | AC_MSG_ERROR([*** Cannot find UTS_RELEASE definition.]) |
57d86234 BB |
175 | fi |
176 | ||
177 | AC_MSG_RESULT([$kernsrcver]) | |
178 | ||
57d86234 BB |
179 | LINUX=${kernelsrc} |
180 | LINUX_OBJ=${kernelbuild} | |
c5f70460 BB |
181 | LINUX_VERSION=${kernsrcver} |
182 | ||
57d86234 BB |
183 | AC_SUBST(LINUX) |
184 | AC_SUBST(LINUX_OBJ) | |
c5f70460 | 185 | AC_SUBST(LINUX_VERSION) |
57d86234 | 186 | |
86933a6e | 187 | SPL_AC_MODULE_SYMVERS |
2e0e7e69 BB |
188 | ]) |
189 | ||
86933a6e | 190 | dnl # |
287b2fb1 BB |
191 | dnl # Explicitly check for gawk, we require it for the the usermode |
192 | dnl # helper. For some reason the standard awk command does not | |
193 | dnl # behave correctly when invoked from the usermode helper. | |
86933a6e | 194 | dnl # |
287b2fb1 | 195 | AC_DEFUN([SPL_AC_GAWK], [ |
18142514 BB |
196 | AS_IF([test "x$AWK" != xgawk], [ |
197 | AC_MSG_ERROR([ | |
198 | *** Required util gawk missing. Please install the required | |
199 | *** gawk package for your distribution and try again.]) | |
200 | ]) | |
201 | ]) | |
86933a6e | 202 | |
287b2fb1 BB |
203 | dnl # |
204 | dnl # Default SPL user configuration | |
205 | dnl # | |
206 | AC_DEFUN([SPL_AC_CONFIG_USER], [ | |
207 | SPL_AC_GAWK | |
208 | ]) | |
209 | ||
210 | dnl # | |
211 | dnl # Check for rpm+rpmbuild to build RPM packages. If these tools | |
212 | dnl # are missing it is non-fatal but you will not be able to build | |
213 | dnl # RPM packages and will be warned if you try too. | |
214 | dnl # | |
215 | AC_DEFUN([SPL_AC_RPM], [ | |
216 | RPM=rpm | |
217 | RPMBUILD=rpmbuild | |
218 | ||
219 | AC_MSG_CHECKING([whether $RPM is available]) | |
220 | AS_IF([tmp=$($RPM --version 2>/dev/null)], [ | |
221 | RPM_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }') | |
222 | HAVE_RPM=yes | |
223 | AC_MSG_RESULT([$HAVE_RPM ($RPM_VERSION)]) | |
224 | ],[ | |
225 | HAVE_RPM=no | |
226 | AC_MSG_RESULT([$HAVE_RPM]) | |
227 | ]) | |
228 | ||
229 | AC_MSG_CHECKING([whether $RPMBUILD is available]) | |
230 | AS_IF([tmp=$($RPMBUILD --version 2>/dev/null)], [ | |
231 | RPMBUILD_VERSION=$(echo $tmp | $AWK '/RPM/ { print $[3] }') | |
232 | HAVE_RPMBUILD=yes | |
233 | AC_MSG_RESULT([$HAVE_RPMBUILD ($RPMBUILD_VERSION)]) | |
234 | ],[ | |
235 | HAVE_RPMBUILD=no | |
236 | AC_MSG_RESULT([$HAVE_RPMBUILD]) | |
237 | ]) | |
238 | ||
239 | AC_SUBST(HAVE_RPM) | |
240 | AC_SUBST(RPM) | |
241 | AC_SUBST(RPM_VERSION) | |
242 | ||
243 | AC_SUBST(HAVE_RPMBUILD) | |
244 | AC_SUBST(RPMBUILD) | |
245 | AC_SUBST(RPMBUILD_VERSION) | |
246 | ]) | |
247 | ||
248 | dnl # | |
249 | dnl # Check for dpkg+dpkg-buildpackage to build DEB packages. If these | |
250 | dnl # tools are missing it is non-fatal but you will not be able to build | |
251 | dnl # DEB packages and will be warned if you try too. | |
252 | dnl # | |
253 | AC_DEFUN([SPL_AC_DPKG], [ | |
254 | DPKG=dpkg | |
255 | DPKGBUILD=dpkg-buildpackage | |
256 | ||
257 | AC_MSG_CHECKING([whether $DPKG is available]) | |
258 | AS_IF([tmp=$($DPKG --version 2>/dev/null)], [ | |
259 | DPKG_VERSION=$(echo $tmp | $AWK '/Debian/ { print $[7] }') | |
260 | HAVE_DPKG=yes | |
261 | AC_MSG_RESULT([$HAVE_DPKG ($DPKG_VERSION)]) | |
262 | ],[ | |
263 | HAVE_DPKG=no | |
264 | AC_MSG_RESULT([$HAVE_DPKG]) | |
265 | ]) | |
266 | ||
267 | AC_MSG_CHECKING([whether $DPKGBUILD is available]) | |
268 | AS_IF([tmp=$($DPKGBUILD --version 2>/dev/null)], [ | |
269 | DPKGBUILD_VERSION=$(echo $tmp | \ | |
270 | $AWK '/Debian/ { print $[4] }' | cut -f-4 -d'.') | |
271 | HAVE_DPKGBUILD=yes | |
272 | AC_MSG_RESULT([$HAVE_DPKGBUILD ($DPKGBUILD_VERSION)]) | |
273 | ],[ | |
274 | HAVE_DPKGBUILD=no | |
275 | AC_MSG_RESULT([$HAVE_DPKGBUILD]) | |
276 | ]) | |
277 | ||
278 | AC_SUBST(HAVE_DPKG) | |
279 | AC_SUBST(DPKG) | |
280 | AC_SUBST(DPKG_VERSION) | |
281 | ||
282 | AC_SUBST(HAVE_DPKGBUILD) | |
283 | AC_SUBST(DPKGBUILD) | |
284 | AC_SUBST(DPKGBUILD_VERSION) | |
285 | ]) | |
286 | ||
287 | dnl # | |
288 | dnl # Until native packaging for various different packing systems | |
289 | dnl # can be added the least we can do is attempt to use alien to | |
290 | dnl # convert the RPM packages to the needed package type. This is | |
291 | dnl # a hack but so far it has worked reasonable well. | |
292 | dnl # | |
293 | AC_DEFUN([SPL_AC_ALIEN], [ | |
294 | ALIEN=alien | |
295 | ||
296 | AC_MSG_CHECKING([whether $ALIEN is available]) | |
297 | AS_IF([tmp=$($ALIEN --version 2>/dev/null)], [ | |
298 | ALIEN_VERSION=$(echo $tmp | $AWK '{ print $[3] }') | |
299 | HAVE_ALIEN=yes | |
300 | AC_MSG_RESULT([$HAVE_ALIEN ($ALIEN_VERSION)]) | |
301 | ],[ | |
302 | HAVE_ALIEN=no | |
303 | AC_MSG_RESULT([$HAVE_ALIEN]) | |
304 | ]) | |
305 | ||
306 | AC_SUBST(HAVE_ALIEN) | |
307 | AC_SUBST(ALIEN) | |
308 | AC_SUBST(ALIEN_VERSION) | |
309 | ]) | |
310 | ||
311 | dnl # | |
312 | dnl # Using the VENDOR tag from config.guess set the default | |
313 | dnl # package type for 'make pkg': (rpm | deb | tgz) | |
314 | dnl # | |
315 | AC_DEFUN([SPL_AC_DEFAULT_PACKAGE], [ | |
316 | VENDOR=$(echo $ac_build_alias | cut -f2 -d'-') | |
317 | ||
318 | AC_MSG_CHECKING([default package type]) | |
319 | case "$VENDOR" in | |
320 | fedora) DEFAULT_PACKAGE=rpm ;; | |
321 | redhat) DEFAULT_PACKAGE=rpm ;; | |
322 | sles) DEFAULT_PACKAGE=rpm ;; | |
323 | ubuntu) DEFAULT_PACKAGE=deb ;; | |
324 | debian) DEFAULT_PACKAGE=deb ;; | |
325 | slackware) DEFAULT_PACKAGE=tgz ;; | |
326 | *) DEFAULT_PACKAGE=rpm ;; | |
327 | esac | |
328 | ||
329 | AC_MSG_RESULT([$DEFAULT_PACKAGE]) | |
330 | AC_SUBST(DEFAULT_PACKAGE) | |
331 | ]) | |
332 | ||
333 | dnl # | |
334 | dnl # Default SPL user configuration | |
335 | dnl # | |
336 | AC_DEFUN([SPL_AC_PACKAGE], [ | |
337 | SPL_AC_RPM | |
338 | SPL_AC_DPKG | |
339 | SPL_AC_ALIEN | |
340 | SPL_AC_DEFAULT_PACKAGE | |
341 | ]) | |
342 | ||
6a1c3d41 | 343 | AC_DEFUN([SPL_AC_LICENSE], [ |
86933a6e BB |
344 | AC_MSG_CHECKING([spl license]) |
345 | LICENSE=GPL | |
346 | AC_MSG_RESULT([$LICENSE]) | |
6a1c3d41 | 347 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DHAVE_GPL_ONLY_SYMBOLS" |
86933a6e BB |
348 | AC_SUBST(LICENSE) |
349 | ]) | |
350 | ||
351 | AC_DEFUN([SPL_AC_CONFIG], [ | |
352 | SPL_CONFIG=all | |
353 | AC_ARG_WITH([config], | |
354 | AS_HELP_STRING([--with-config=CONFIG], | |
c1541dfe | 355 | [Config file 'kernel|user|all|srpm']), |
86933a6e BB |
356 | [SPL_CONFIG="$withval"]) |
357 | ||
358 | AC_MSG_CHECKING([spl config]) | |
359 | AC_MSG_RESULT([$SPL_CONFIG]); | |
360 | AC_SUBST(SPL_CONFIG) | |
361 | ||
362 | case "$SPL_CONFIG" in | |
363 | kernel) SPL_AC_CONFIG_KERNEL ;; | |
364 | user) SPL_AC_CONFIG_USER ;; | |
365 | all) SPL_AC_CONFIG_KERNEL | |
366 | SPL_AC_CONFIG_USER ;; | |
c1541dfe | 367 | srpm) ;; |
86933a6e BB |
368 | *) |
369 | AC_MSG_RESULT([Error!]) | |
370 | AC_MSG_ERROR([Bad value "$SPL_CONFIG" for --with-config, | |
c1541dfe | 371 | user kernel|user|all|srpm]) ;; |
86933a6e BB |
372 | esac |
373 | ||
374 | AM_CONDITIONAL([CONFIG_USER], | |
375 | [test "$SPL_CONFIG" = user] || | |
376 | [test "$SPL_CONFIG" = all]) | |
377 | AM_CONDITIONAL([CONFIG_KERNEL], | |
378 | [test "$SPL_CONFIG" = kernel] || | |
379 | [test "$SPL_CONFIG" = all]) | |
6a1c3d41 BB |
380 | ]) |
381 | ||
055ffd98 BB |
382 | dnl # |
383 | dnl # Enable if the SPL should be compiled with internal debugging enabled. | |
384 | dnl # By default this support is disabled. | |
385 | dnl # | |
57d86234 | 386 | AC_DEFUN([SPL_AC_DEBUG], [ |
c950d148 | 387 | AC_MSG_CHECKING([whether debugging is enabled]) |
055ffd98 BB |
388 | AC_ARG_ENABLE([debug], |
389 | [AS_HELP_STRING([--enable-debug], | |
390 | [Enable generic debug support @<:@default=no@:>@])], | |
391 | [], | |
392 | [enable_debug=no]) | |
393 | ||
394 | AS_IF([test "x$enable_debug" = xyes], | |
c950d148 | 395 | [ |
c950d148 BB |
396 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG -Werror" |
397 | DEBUG_CFLAGS="-DDEBUG -Werror" | |
398 | ], | |
399 | [ | |
c950d148 BB |
400 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DNDEBUG" |
401 | DEBUG_CFLAGS="-DNDEBUG" | |
402 | ]) | |
055ffd98 | 403 | |
c950d148 | 404 | AC_SUBST(DEBUG_CFLAGS) |
055ffd98 | 405 | AC_MSG_RESULT([$enable_debug]) |
57d86234 BB |
406 | ]) |
407 | ||
055ffd98 BB |
408 | dnl # |
409 | dnl # Enabled by default it provides a minimal level of memory tracking. | |
410 | dnl # A total count of bytes allocated is kept for each alloc and free. | |
411 | dnl # Then at module unload time a report to the console will be printed | |
412 | dnl # if memory was leaked. Additionally, /proc/spl/kmem/slab will exist | |
413 | dnl # and provide an easy way to inspect the kmem based slab. | |
414 | dnl # | |
57d86234 | 415 | AC_DEFUN([SPL_AC_DEBUG_KMEM], [ |
055ffd98 BB |
416 | AC_ARG_ENABLE([debug-kmem], |
417 | [AS_HELP_STRING([--enable-debug-kmem], | |
418 | [Enable basic kmem accounting @<:@default=yes@:>@])], | |
419 | [], | |
420 | [enable_debug_kmem=yes]) | |
57d86234 | 421 | |
055ffd98 BB |
422 | AS_IF([test "x$enable_debug_kmem" = xyes], |
423 | [AC_DEFINE([DEBUG_KMEM], [1], | |
424 | [Define to 1 to enable basic kmem accounting]) | |
425 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM"]) | |
426 | ||
427 | AC_MSG_CHECKING([whether basic kmem accounting is enabled]) | |
428 | AC_MSG_RESULT([$enable_debug_kmem]) | |
57d86234 BB |
429 | ]) |
430 | ||
055ffd98 BB |
431 | dnl # |
432 | dnl # Disabled by default it provides detailed memory tracking. This | |
433 | dnl # feature also requires --enable-debug-kmem to be set. When enabled | |
434 | dnl # not only will total bytes be tracked but also the location of every | |
435 | dnl # alloc and free. When the SPL module is unloaded a list of all leaked | |
436 | dnl # addresses and where they were allocated will be dumped to the console. | |
437 | dnl # Enabling this feature has a significant impact on performance but it | |
438 | dnl # makes finding memory leaks pretty straight forward. | |
439 | dnl # | |
440 | AC_DEFUN([SPL_AC_DEBUG_KMEM_TRACKING], [ | |
441 | AC_ARG_ENABLE([debug-kmem-tracking], | |
442 | [AS_HELP_STRING([--enable-debug-kmem-tracking], | |
443 | [Enable detailed kmem tracking @<:@default=no@:>@])], | |
444 | [], | |
445 | [enable_debug_kmem_tracking=no]) | |
446 | ||
447 | AS_IF([test "x$enable_debug_kmem_tracking" = xyes], | |
448 | [AC_DEFINE([DEBUG_KMEM_TRACKING], [1], | |
449 | [Define to 1 to enable detailed kmem tracking]) | |
450 | KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM_TRACKING"]) | |
451 | ||
452 | AC_MSG_CHECKING([whether detailed kmem tracking is enabled]) | |
453 | AC_MSG_RESULT([$enable_debug_kmem_tracking]) | |
57d86234 BB |
454 | ]) |
455 | ||
456 | dnl # | |
457 | dnl # SPL_LINUX_CONFTEST | |
458 | dnl # | |
459 | AC_DEFUN([SPL_LINUX_CONFTEST], [ | |
dbe561d8 | 460 | cat confdefs.h - <<_ACEOF >conftest.c |
57d86234 BB |
461 | $1 |
462 | _ACEOF | |
463 | ]) | |
464 | ||
465 | dnl # | |
466 | dnl # SPL_LANG_PROGRAM(C)([PROLOGUE], [BODY]) | |
467 | dnl # | |
468 | m4_define([SPL_LANG_PROGRAM], [ | |
469 | $1 | |
470 | int | |
471 | main (void) | |
472 | { | |
473 | dnl Do *not* indent the following line: there may be CPP directives. | |
474 | dnl Don't move the `;' right after for the same reason. | |
475 | $2 | |
476 | ; | |
477 | return 0; | |
478 | } | |
479 | ]) | |
480 | ||
481 | dnl # | |
482 | dnl # SPL_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE | |
483 | dnl # | |
484 | AC_DEFUN([SPL_LINUX_COMPILE_IFELSE], [ | |
c5f70460 BB |
485 | m4_ifvaln([$1], [SPL_LINUX_CONFTEST([$1])]) |
486 | rm -Rf build && mkdir -p build | |
487 | echo "obj-m := conftest.o" >build/Makefile | |
488 | AS_IF( | |
3d0cb2d3 | 489 | [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 |
490 | [$4], |
491 | [_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])] | |
492 | ) | |
493 | rm -Rf build | |
57d86234 BB |
494 | ]) |
495 | ||
496 | dnl # | |
497 | dnl # SPL_LINUX_TRY_COMPILE like AC_TRY_COMPILE | |
498 | dnl # | |
499 | AC_DEFUN([SPL_LINUX_TRY_COMPILE], | |
500 | [SPL_LINUX_COMPILE_IFELSE( | |
d50bd9e2 BB |
501 | [AC_LANG_SOURCE([SPL_LANG_PROGRAM([[$1]], [[$2]])])], |
502 | [modules], | |
503 | [test -s build/conftest.o], | |
504 | [$3], [$4]) | |
57d86234 BB |
505 | ]) |
506 | ||
507 | dnl # | |
508 | dnl # SPL_LINUX_CONFIG | |
509 | dnl # | |
510 | AC_DEFUN([SPL_LINUX_CONFIG], | |
511 | [AC_MSG_CHECKING([whether Linux was built with CONFIG_$1]) | |
512 | SPL_LINUX_TRY_COMPILE([ | |
513 | #ifndef AUTOCONF_INCLUDED | |
514 | #include <linux/config.h> | |
515 | #endif | |
516 | ],[ | |
517 | #ifndef CONFIG_$1 | |
518 | #error CONFIG_$1 not #defined | |
519 | #endif | |
520 | ],[ | |
521 | AC_MSG_RESULT([yes]) | |
522 | $2 | |
523 | ],[ | |
524 | AC_MSG_RESULT([no]) | |
525 | $3 | |
526 | ]) | |
527 | ]) | |
528 | ||
529 | dnl # | |
530 | dnl # SPL_CHECK_SYMBOL_EXPORT | |
531 | dnl # check symbol exported or not | |
532 | dnl # | |
533 | AC_DEFUN([SPL_CHECK_SYMBOL_EXPORT], | |
534 | [AC_MSG_CHECKING([whether symbol $1 is exported]) | |
2e0e7e69 BB |
535 | grep -q -E '[[[:space:]]]$1[[[:space:]]]' \ |
536 | $LINUX_OBJ/Module*.symvers 2>/dev/null | |
57d86234 BB |
537 | rc=$? |
538 | if test $rc -ne 0; then | |
539 | export=0 | |
540 | for file in $2; do | |
2e0e7e69 BB |
541 | grep -q -E "EXPORT_SYMBOL.*($1)" \ |
542 | "$LINUX_OBJ/$file" 2>/dev/null | |
57d86234 BB |
543 | rc=$? |
544 | if test $rc -eq 0; then | |
545 | export=1 | |
546 | break; | |
547 | fi | |
548 | done | |
549 | if test $export -eq 0; then | |
550 | AC_MSG_RESULT([no]) | |
551 | $4 | |
552 | else | |
553 | AC_MSG_RESULT([yes]) | |
554 | $3 | |
555 | fi | |
556 | else | |
557 | AC_MSG_RESULT([yes]) | |
558 | $3 | |
559 | fi | |
560 | ]) | |
561 | ||
86de8532 BB |
562 | dnl # |
563 | dnl # SPL_CHECK_HEADER | |
564 | dnl # check whether header exists and define HAVE_$2_HEADER | |
565 | dnl # | |
566 | AC_DEFUN([SPL_CHECK_HEADER], | |
567 | [AC_MSG_CHECKING([whether header $1 exists]) | |
568 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 569 | #include <$1> |
86de8532 BB |
570 | ],[ |
571 | return 0; | |
572 | ],[ | |
573 | AC_DEFINE(HAVE_$2_HEADER, 1, [$1 exists]) | |
574 | AC_MSG_RESULT(yes) | |
575 | $3 | |
576 | ],[ | |
577 | AC_MSG_RESULT(no) | |
578 | $4 | |
579 | ]) | |
580 | ]) | |
6a6cafbe | 581 | |
57d86234 | 582 | dnl # |
d04c8a56 BB |
583 | dnl # Use the atomic implemenation based on global spinlocks. This |
584 | dnl # should only be needed by 32-bit kernels which do not provide | |
585 | dnl # the atomic64_* API. It may be optionally enabled as a fallback | |
586 | dnl # if problems are observed with the direct mapping to the native | |
587 | dnl # Linux atomic operations. You may not disable atomic spinlocks | |
588 | dnl # if you kernel does not an atomic64_* API. | |
57d86234 | 589 | dnl # |
d04c8a56 BB |
590 | AC_DEFUN([SPL_AC_ATOMIC_SPINLOCK], [ |
591 | AC_ARG_ENABLE([atomic-spinlocks], | |
592 | [AS_HELP_STRING([--enable-atomic-spinlocks], | |
593 | [Atomic types use spinlocks @<:@default=check@:>@])], | |
594 | [], | |
595 | [enable_atomic_spinlocks=check]) | |
57d86234 | 596 | |
a0f6da3d BB |
597 | SPL_LINUX_TRY_COMPILE([ |
598 | #include <asm/atomic.h> | |
599 | ],[ | |
600 | atomic64_t *ptr; | |
601 | ],[ | |
d04c8a56 | 602 | have_atomic64_t=yes |
a0f6da3d | 603 | AC_DEFINE(HAVE_ATOMIC64_T, 1, |
d04c8a56 | 604 | [kernel defines atomic64_t]) |
a0f6da3d | 605 | ],[ |
d04c8a56 BB |
606 | have_atomic64_t=no |
607 | ]) | |
608 | ||
609 | AS_IF([test "x$enable_atomic_spinlocks" = xcheck], [ | |
610 | AS_IF([test "x$have_atomic64_t" = xyes], [ | |
611 | enable_atomic_spinlocks=no | |
612 | ],[ | |
613 | enable_atomic_spinlocks=yes | |
614 | ]) | |
a0f6da3d | 615 | ]) |
d04c8a56 BB |
616 | |
617 | AS_IF([test "x$enable_atomic_spinlocks" = xyes], [ | |
618 | AC_DEFINE([ATOMIC_SPINLOCK], [1], | |
619 | [Atomic types use spinlocks]) | |
620 | ],[ | |
621 | AS_IF([test "x$have_atomic64_t" = xno], [ | |
622 | AC_MSG_FAILURE( | |
623 | [--disable-atomic-spinlocks given but required atomic64 support is unavailable]) | |
624 | ]) | |
625 | ]) | |
626 | ||
627 | AC_MSG_CHECKING([whether atomic types use spinlocks]) | |
628 | AC_MSG_RESULT([$enable_atomic_spinlocks]) | |
629 | ||
630 | AC_MSG_CHECKING([whether kernel defines atomic64_t]) | |
631 | AC_MSG_RESULT([$have_atomic64_t]) | |
a0f6da3d BB |
632 | ]) |
633 | ||
302b88e6 BB |
634 | dnl # |
635 | dnl # 2.6.24 API change, | |
636 | dnl # check if atomic64_cmpxchg is defined | |
637 | dnl # | |
638 | AC_DEFUN([SPL_AC_TYPE_ATOMIC64_CMPXCHG], | |
639 | [AC_MSG_CHECKING([whether kernel defines atomic64_cmpxchg]) | |
640 | SPL_LINUX_TRY_COMPILE([ | |
641 | #include <asm/atomic.h> | |
5ec44a37 | 642 | #include <asm/system.h> |
302b88e6 BB |
643 | ],[ |
644 | atomic64_cmpxchg((atomic64_t *)NULL, 0, 0); | |
645 | ],[ | |
646 | AC_MSG_RESULT([yes]) | |
647 | AC_DEFINE(HAVE_ATOMIC64_CMPXCHG, 1, | |
648 | [kernel defines atomic64_cmpxchg]) | |
649 | ],[ | |
650 | AC_MSG_RESULT([no]) | |
651 | ]) | |
652 | ]) | |
653 | ||
654 | dnl # | |
655 | dnl # 2.6.24 API change, | |
656 | dnl # check if atomic64_xchg is defined | |
657 | dnl # | |
658 | AC_DEFUN([SPL_AC_TYPE_ATOMIC64_XCHG], | |
659 | [AC_MSG_CHECKING([whether kernel defines atomic64_xchg]) | |
660 | SPL_LINUX_TRY_COMPILE([ | |
661 | #include <asm/atomic.h> | |
662 | ],[ | |
663 | atomic64_xchg((atomic64_t *)NULL, 0); | |
664 | ],[ | |
665 | AC_MSG_RESULT([yes]) | |
666 | AC_DEFINE(HAVE_ATOMIC64_XCHG, 1, | |
667 | [kernel defines atomic64_xchg]) | |
668 | ],[ | |
669 | AC_MSG_RESULT([no]) | |
670 | ]) | |
671 | ]) | |
672 | ||
d04c8a56 BB |
673 | dnl # |
674 | dnl # 2.6.24 API change, | |
675 | dnl # check if uintptr_t typedef is defined | |
676 | dnl # | |
677 | AC_DEFUN([SPL_AC_TYPE_UINTPTR_T], | |
678 | [AC_MSG_CHECKING([whether kernel defines uintptr_t]) | |
679 | SPL_LINUX_TRY_COMPILE([ | |
680 | #include <linux/types.h> | |
681 | ],[ | |
682 | uintptr_t *ptr; | |
683 | ],[ | |
684 | AC_MSG_RESULT([yes]) | |
685 | AC_DEFINE(HAVE_UINTPTR_T, 1, | |
686 | [kernel defines uintptr_t]) | |
687 | ],[ | |
688 | AC_MSG_RESULT([no]) | |
689 | ]) | |
690 | ]) | |
691 | ||
57d86234 | 692 | dnl # |
3d061e9d | 693 | dnl # 2.6.20 API change, |
57d86234 BB |
694 | dnl # INIT_WORK use 2 args and not store data inside |
695 | dnl # | |
696 | AC_DEFUN([SPL_AC_3ARGS_INIT_WORK], | |
697 | [AC_MSG_CHECKING([whether INIT_WORK wants 3 args]) | |
698 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 699 | #include <linux/workqueue.h> |
57d86234 | 700 | ],[ |
d50bd9e2 BB |
701 | struct work_struct work; |
702 | INIT_WORK(&work, NULL, NULL); | |
57d86234 | 703 | ],[ |
d50bd9e2 BB |
704 | AC_MSG_RESULT(yes) |
705 | AC_DEFINE(HAVE_3ARGS_INIT_WORK, 1, | |
706 | [INIT_WORK wants 3 args]) | |
57d86234 | 707 | ],[ |
d50bd9e2 | 708 | AC_MSG_RESULT(no) |
57d86234 BB |
709 | ]) |
710 | ]) | |
711 | ||
712 | dnl # | |
3d061e9d | 713 | dnl # 2.6.21 API change, |
57d86234 BB |
714 | dnl # 'register_sysctl_table' use only one argument instead of two |
715 | dnl # | |
716 | AC_DEFUN([SPL_AC_2ARGS_REGISTER_SYSCTL], | |
717 | [AC_MSG_CHECKING([whether register_sysctl_table() wants 2 args]) | |
718 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 719 | #include <linux/sysctl.h> |
57d86234 | 720 | ],[ |
d50bd9e2 | 721 | return register_sysctl_table(NULL,0); |
57d86234 | 722 | ],[ |
d50bd9e2 BB |
723 | AC_MSG_RESULT(yes) |
724 | AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1, | |
725 | [register_sysctl_table() wants 2 args]) | |
57d86234 | 726 | ],[ |
d50bd9e2 | 727 | AC_MSG_RESULT(no) |
57d86234 BB |
728 | ]) |
729 | ]) | |
730 | ||
57d86234 | 731 | dnl # |
3d061e9d | 732 | dnl # 2.6.23 API change |
57d86234 BB |
733 | dnl # Old set_shrinker API replaced with register_shrinker |
734 | dnl # | |
735 | AC_DEFUN([SPL_AC_SET_SHRINKER], [ | |
736 | AC_MSG_CHECKING([whether set_shrinker() available]) | |
737 | SPL_LINUX_TRY_COMPILE([ | |
738 | #include <linux/mm.h> | |
739 | ],[ | |
740 | return set_shrinker(DEFAULT_SEEKS, NULL); | |
741 | ],[ | |
742 | AC_MSG_RESULT([yes]) | |
743 | AC_DEFINE(HAVE_SET_SHRINKER, 1, | |
744 | [set_shrinker() available]) | |
745 | ],[ | |
746 | AC_MSG_RESULT([no]) | |
747 | ]) | |
748 | ]) | |
749 | ||
750 | dnl # | |
3d061e9d | 751 | dnl # 2.6.25 API change, |
57d86234 BB |
752 | dnl # struct path entry added to struct nameidata |
753 | dnl # | |
754 | AC_DEFUN([SPL_AC_PATH_IN_NAMEIDATA], | |
755 | [AC_MSG_CHECKING([whether struct path used in struct nameidata]) | |
756 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 757 | #include <linux/namei.h> |
57d86234 | 758 | ],[ |
d50bd9e2 | 759 | struct nameidata nd; |
57d86234 BB |
760 | |
761 | nd.path.mnt = NULL; | |
762 | nd.path.dentry = NULL; | |
763 | ],[ | |
d50bd9e2 BB |
764 | AC_MSG_RESULT(yes) |
765 | AC_DEFINE(HAVE_PATH_IN_NAMEIDATA, 1, | |
766 | [struct path used in struct nameidata]) | |
57d86234 | 767 | ],[ |
d50bd9e2 | 768 | AC_MSG_RESULT(no) |
57d86234 BB |
769 | ]) |
770 | ]) | |
771 | ||
772 | dnl # | |
773 | dnl # Custom SPL patch may export this system it is not required | |
774 | dnl # | |
775 | AC_DEFUN([SPL_AC_TASK_CURR], [ | |
776 | SPL_CHECK_SYMBOL_EXPORT([task_curr], [kernel/sched.c], | |
777 | [AC_DEFINE(HAVE_TASK_CURR, 1, [task_curr() exported])], | |
778 | []) | |
779 | ]) | |
780 | ||
781 | dnl # | |
3d061e9d | 782 | dnl # 2.6.19 API change, |
57d86234 BB |
783 | dnl # Use CTL_UNNUMBERED when binary sysctl is not required |
784 | dnl # | |
785 | AC_DEFUN([SPL_AC_CTL_UNNUMBERED], | |
786 | [AC_MSG_CHECKING([whether unnumbered sysctl support exists]) | |
787 | SPL_LINUX_TRY_COMPILE([ | |
d50bd9e2 | 788 | #include <linux/sysctl.h> |
57d86234 BB |
789 | ],[ |
790 | #ifndef CTL_UNNUMBERED | |
791 | #error CTL_UNNUMBERED undefined | |
792 | #endif | |
793 | ],[ | |
d50bd9e2 BB |
794 | AC_MSG_RESULT(yes) |
795 | AC_DEFINE(HAVE_CTL_UNNUMBERED, 1, | |
796 | [unnumbered sysctl support exists]) | |
57d86234 | 797 | ],[ |
d50bd9e2 | 798 | AC_MSG_RESULT(no) |
57d86234 BB |
799 | ]) |
800 | ]) | |
877a32e9 | 801 | |
79a3bf13 BB |
802 | dnl # |
803 | dnl # 2.6.33 API change, | |
804 | dnl # Removed .ctl_name from struct ctl_table. | |
805 | dnl # | |
806 | AC_DEFUN([SPL_AC_CTL_NAME], [ | |
807 | AC_MSG_CHECKING([whether struct ctl_table has ctl_name]) | |
808 | SPL_LINUX_TRY_COMPILE([ | |
809 | #include <linux/sysctl.h> | |
810 | ],[ | |
811 | struct ctl_table ctl; | |
812 | ctl.ctl_name = 0; | |
813 | ],[ | |
814 | AC_MSG_RESULT(yes) | |
815 | AC_DEFINE(HAVE_CTL_NAME, 1, [struct ctl_table has ctl_name]) | |
816 | ],[ | |
817 | AC_MSG_RESULT(no) | |
818 | ]) | |
819 | ]) | |
820 | ||
877a32e9 BB |
821 | dnl # |
822 | dnl # 2.6.16 API change. | |
823 | dnl # Check if 'fls64()' is available | |
824 | dnl # | |
825 | AC_DEFUN([SPL_AC_FLS64], | |
6a6cafbe BB |
826 | [AC_MSG_CHECKING([whether fls64() is available]) |
827 | SPL_LINUX_TRY_COMPILE([ | |
828 | #include <linux/bitops.h> | |
829 | ],[ | |
830 | return fls64(0); | |
831 | ],[ | |
832 | AC_MSG_RESULT(yes) | |
833 | AC_DEFINE(HAVE_FLS64, 1, [fls64() is available]) | |
834 | ],[ | |
835 | AC_MSG_RESULT(no) | |
836 | ]) | |
877a32e9 | 837 | ]) |
46c685d0 BB |
838 | |
839 | dnl # | |
840 | dnl # 2.6.18 API change, check whether device_create() is available. | |
841 | dnl # Device_create() was introduced in 2.6.18 and depricated | |
842 | dnl # class_device_create() which was fully removed in 2.6.26. | |
843 | dnl # | |
844 | AC_DEFUN([SPL_AC_DEVICE_CREATE], [ | |
845 | SPL_CHECK_SYMBOL_EXPORT( | |
846 | [device_create], | |
847 | [drivers/base/core.c], | |
848 | [AC_DEFINE(HAVE_DEVICE_CREATE, 1, | |
849 | [device_create() is available])], | |
6a6cafbe | 850 | []) |
46c685d0 BB |
851 | ]) |
852 | ||
8123ac4f BB |
853 | dnl # |
854 | dnl # 2.6.27 API change, | |
855 | dnl # device_create() uses 5 args, new 'drvdata' argument. | |
856 | dnl # | |
857 | AC_DEFUN([SPL_AC_5ARGS_DEVICE_CREATE], [ | |
858 | AC_MSG_CHECKING([whether device_create() wants 5 args]) | |
859 | tmp_flags="$EXTRA_KCFLAGS" | |
860 | EXTRA_KCFLAGS="-Werror" | |
861 | SPL_LINUX_TRY_COMPILE([ | |
862 | #include <linux/device.h> | |
863 | ],[ | |
864 | device_create(NULL, NULL, 0, NULL, "%d", 1); | |
865 | ],[ | |
866 | AC_MSG_RESULT(yes) | |
867 | AC_DEFINE(HAVE_5ARGS_DEVICE_CREATE, 1, | |
868 | [device_create wants 5 args]) | |
869 | ],[ | |
870 | AC_MSG_RESULT(no) | |
871 | ]) | |
872 | EXTRA_KCFLAGS="$tmp_flags" | |
873 | ]) | |
874 | ||
46c685d0 BB |
875 | dnl # |
876 | dnl # 2.6.13 API change, check whether class_device_create() is available. | |
877 | dnl # Class_device_create() was introduced in 2.6.13 and depricated | |
878 | dnl # class_simple_device_add() which was fully removed in 2.6.13. | |
879 | dnl # | |
880 | AC_DEFUN([SPL_AC_CLASS_DEVICE_CREATE], [ | |
881 | SPL_CHECK_SYMBOL_EXPORT( | |
882 | [class_device_create], | |
883 | [drivers/base/class.c], | |
884 | [AC_DEFINE(HAVE_CLASS_DEVICE_CREATE, 1, | |
885 | [class_device_create() is available])], | |
6a6cafbe | 886 | []) |
46c685d0 | 887 | ]) |
6a6cafbe | 888 | |
6a6cafbe BB |
889 | dnl # |
890 | dnl # 2.6.26 API change, set_normalized_timespec() is exported. | |
891 | dnl # | |
892 | AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT], [ | |
893 | SPL_CHECK_SYMBOL_EXPORT( | |
894 | [set_normalized_timespec], | |
895 | [kernel/time.c], | |
896 | [AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT, 1, | |
897 | [set_normalized_timespec() is available as export])], | |
898 | []) | |
899 | ]) | |
900 | ||
901 | dnl # | |
902 | dnl # 2.6.16 API change, set_normalize_timespec() moved to time.c | |
903 | dnl # previously it was available in time.h as an inline. | |
904 | dnl # | |
86de8532 BB |
905 | AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE], [ |
906 | AC_MSG_CHECKING([whether set_normalized_timespec() is an inline]) | |
6a6cafbe BB |
907 | SPL_LINUX_TRY_COMPILE([ |
908 | #include <linux/time.h> | |
6a6cafbe | 909 | void set_normalized_timespec(struct timespec *ts, |
25557fd8 BB |
910 | time_t sec, long nsec) { } |
911 | ], | |
912 | [], | |
913 | [ | |
6a6cafbe BB |
914 | AC_MSG_RESULT(no) |
915 | ],[ | |
916 | AC_MSG_RESULT(yes) | |
917 | AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_INLINE, 1, | |
918 | [set_normalized_timespec() is available as inline]) | |
919 | ]) | |
920 | ]) | |
921 | ||
922 | dnl # | |
923 | dnl # 2.6.18 API change, | |
924 | dnl # timespec_sub() inline function available in linux/time.h | |
925 | dnl # | |
86de8532 BB |
926 | AC_DEFUN([SPL_AC_TIMESPEC_SUB], [ |
927 | AC_MSG_CHECKING([whether timespec_sub() is available]) | |
6a6cafbe BB |
928 | SPL_LINUX_TRY_COMPILE([ |
929 | #include <linux/time.h> | |
930 | ],[ | |
931 | struct timespec a, b, c = { 0 }; | |
932 | c = timespec_sub(a, b); | |
933 | ],[ | |
934 | AC_MSG_RESULT(yes) | |
935 | AC_DEFINE(HAVE_TIMESPEC_SUB, 1, [timespec_sub() is available]) | |
936 | ],[ | |
937 | AC_MSG_RESULT(no) | |
938 | ]) | |
939 | ]) | |
940 | ||
86de8532 | 941 | dnl # |
3d061e9d BB |
942 | dnl # 2.6.19 API change, |
943 | dnl # check if init_utsname() is available in linux/utsname.h | |
944 | dnl # | |
945 | AC_DEFUN([SPL_AC_INIT_UTSNAME], [ | |
946 | AC_MSG_CHECKING([whether init_utsname() is available]) | |
947 | SPL_LINUX_TRY_COMPILE([ | |
948 | #include <linux/utsname.h> | |
949 | ],[ | |
950 | struct new_utsname *a = init_utsname(); | |
951 | ],[ | |
952 | AC_MSG_RESULT(yes) | |
953 | AC_DEFINE(HAVE_INIT_UTSNAME, 1, [init_utsname() is available]) | |
954 | ],[ | |
955 | AC_MSG_RESULT(no) | |
956 | ]) | |
957 | ]) | |
958 | ||
959 | dnl # | |
960 | dnl # 2.6.26 API change, | |
961 | dnl # definition of struct fdtable relocated to linux/fdtable.h | |
86de8532 BB |
962 | dnl # |
963 | AC_DEFUN([SPL_AC_FDTABLE_HEADER], [ | |
964 | SPL_CHECK_HEADER([linux/fdtable.h], [FDTABLE], [], []) | |
965 | ]) | |
322640b7 BB |
966 | |
967 | dnl # | |
3d061e9d BB |
968 | dnl # 2.6.14 API change, |
969 | dnl # check whether 'files_fdtable()' exists | |
970 | dnl # | |
971 | AC_DEFUN([SPL_AC_FILES_FDTABLE], [ | |
972 | AC_MSG_CHECKING([whether files_fdtable() is available]) | |
973 | SPL_LINUX_TRY_COMPILE([ | |
974 | #include <linux/sched.h> | |
975 | #include <linux/file.h> | |
976 | #ifdef HAVE_FDTABLE_HEADER | |
977 | #include <linux/fdtable.h> | |
978 | #endif | |
979 | ],[ | |
980 | struct files_struct *files = current->files; | |
981 | struct fdtable *fdt = files_fdtable(files); | |
982 | ],[ | |
983 | AC_MSG_RESULT(yes) | |
984 | AC_DEFINE(HAVE_FILES_FDTABLE, 1, [files_fdtable() is available]) | |
985 | ],[ | |
986 | AC_MSG_RESULT(no) | |
987 | ]) | |
988 | ]) | |
989 | ||
990 | dnl # | |
991 | dnl # 2.6.18 API change, | |
992 | dnl # added linux/uaccess.h | |
322640b7 BB |
993 | dnl # |
994 | AC_DEFUN([SPL_AC_UACCESS_HEADER], [ | |
995 | SPL_CHECK_HEADER([linux/uaccess.h], [UACCESS], [], []) | |
996 | ]) | |
3d061e9d BB |
997 | |
998 | dnl # | |
999 | dnl # 2.6.12 API change, | |
1000 | dnl # check whether 'kmalloc_node()' is available. | |
1001 | dnl # | |
1002 | AC_DEFUN([SPL_AC_KMALLOC_NODE], [ | |
1003 | AC_MSG_CHECKING([whether kmalloc_node() is available]) | |
1004 | SPL_LINUX_TRY_COMPILE([ | |
1005 | #include <linux/slab.h> | |
1006 | ],[ | |
1007 | void *a = kmalloc_node(1, GFP_KERNEL, 0); | |
1008 | ],[ | |
1009 | AC_MSG_RESULT(yes) | |
1010 | AC_DEFINE(HAVE_KMALLOC_NODE, 1, [kmalloc_node() is available]) | |
1011 | ],[ | |
1012 | AC_MSG_RESULT(no) | |
1013 | ]) | |
1014 | ]) | |
1015 | ||
1016 | dnl # | |
1017 | dnl # 2.6.9 API change, | |
1018 | dnl # check whether 'monotonic_clock()' is available it may | |
1019 | dnl # be available for some archs but not others. | |
1020 | dnl # | |
1021 | AC_DEFUN([SPL_AC_MONOTONIC_CLOCK], [ | |
1022 | SPL_CHECK_SYMBOL_EXPORT( | |
1023 | [monotonic_clock], | |
1024 | [], | |
1025 | [AC_DEFINE(HAVE_MONOTONIC_CLOCK, 1, | |
1026 | [monotonic_clock() is available])], | |
1027 | []) | |
1028 | ]) | |
1029 | ||
1030 | dnl # | |
1031 | dnl # 2.6.16 API change, | |
1032 | dnl # check whether 'struct inode' has i_mutex | |
1033 | dnl # | |
1034 | AC_DEFUN([SPL_AC_INODE_I_MUTEX], [ | |
1035 | AC_MSG_CHECKING([whether struct inode has i_mutex]) | |
1036 | SPL_LINUX_TRY_COMPILE([ | |
1037 | #include <linux/fs.h> | |
1038 | #include <linux/mutex.h> | |
1039 | ],[ | |
1040 | struct inode i; | |
1041 | mutex_init(&i.i_mutex); | |
1042 | ],[ | |
1043 | AC_MSG_RESULT(yes) | |
1044 | AC_DEFINE(HAVE_INODE_I_MUTEX, 1, [struct inode has i_mutex]) | |
1045 | ],[ | |
1046 | AC_MSG_RESULT(no) | |
1047 | ]) | |
1048 | ]) | |
b61a6e8b | 1049 | |
4d54fdee BB |
1050 | dnl # |
1051 | dnl # 2.6.29 API change, | |
1052 | dnl # Adaptive mutexs introduced. | |
1053 | dnl # | |
1054 | AC_DEFUN([SPL_AC_MUTEX_OWNER], [ | |
1055 | AC_MSG_CHECKING([whether struct mutex has owner]) | |
1056 | SPL_LINUX_TRY_COMPILE([ | |
1057 | #include <linux/mutex.h> | |
1058 | ],[ | |
1059 | struct mutex mtx; | |
1060 | mtx.owner = NULL; | |
1061 | ],[ | |
1062 | AC_MSG_RESULT(yes) | |
1063 | AC_DEFINE(HAVE_MUTEX_OWNER, 1, [struct mutex has owner]) | |
1064 | ],[ | |
1065 | AC_MSG_RESULT(no) | |
1066 | ]) | |
1067 | ]) | |
1068 | ||
6c9433c1 BB |
1069 | dnl # |
1070 | dnl # 2.6.18 API change, | |
1071 | dnl # First introduced 'mutex_lock_nested()' in include/linux/mutex.h, | |
1072 | dnl # as part of the mutex validator. Fallback to using 'mutex_lock()' | |
1073 | dnl # if the mutex validator is disabled or otherwise unavailable. | |
1074 | dnl # | |
1075 | AC_DEFUN([SPL_AC_MUTEX_LOCK_NESTED], [ | |
1076 | AC_MSG_CHECKING([whether mutex_lock_nested() is available]) | |
1077 | SPL_LINUX_TRY_COMPILE([ | |
1078 | #include <linux/mutex.h> | |
1079 | ],[ | |
1080 | struct mutex mutex; | |
1081 | mutex_init(&mutex); | |
1082 | mutex_lock_nested(&mutex, 0); | |
1083 | ],[ | |
1084 | AC_MSG_RESULT(yes) | |
1085 | AC_DEFINE(HAVE_MUTEX_LOCK_NESTED, 1, | |
1086 | [mutex_lock_nested() is available]) | |
1087 | ],[ | |
1088 | AC_MSG_RESULT(no) | |
1089 | ]) | |
1090 | ]) | |
1091 | ||
31a033ec BB |
1092 | dnl # |
1093 | dnl # 2.6.27 API change, | |
1094 | dnl # on_each_cpu() uses 3 args, no 'retry' argument | |
1095 | dnl # | |
1096 | AC_DEFUN([SPL_AC_3ARGS_ON_EACH_CPU], [ | |
1097 | AC_MSG_CHECKING([whether on_each_cpu() wants 3 args]) | |
1098 | SPL_LINUX_TRY_COMPILE([ | |
1099 | #include <linux/smp.h> | |
1100 | ],[ | |
1101 | on_each_cpu(NULL, NULL, 0); | |
1102 | ],[ | |
1103 | AC_MSG_RESULT(yes) | |
1104 | AC_DEFINE(HAVE_3ARGS_ON_EACH_CPU, 1, | |
1105 | [on_each_cpu wants 3 args]) | |
1106 | ],[ | |
1107 | AC_MSG_RESULT(no) | |
1108 | ]) | |
1109 | ]) | |
36b313da BB |
1110 | |
1111 | dnl # | |
d1ff2312 BB |
1112 | dnl # 2.6.18 API change, |
1113 | dnl # kallsyms_lookup_name no longer exported | |
1114 | dnl # | |
1115 | AC_DEFUN([SPL_AC_KALLSYMS_LOOKUP_NAME], [ | |
1116 | SPL_CHECK_SYMBOL_EXPORT( | |
1117 | [kallsyms_lookup_name], | |
1118 | [], | |
1119 | [AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1, | |
1120 | [kallsyms_lookup_name() is available])], | |
1121 | []) | |
1122 | ]) | |
1123 | ||
1124 | dnl # | |
e11d6c5f BB |
1125 | dnl # Proposed API change, |
1126 | dnl # This symbol is not available in stock kernels. You may build a | |
1127 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1128 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1129 | dnl # your environment this is recommended. | |
d1ff2312 BB |
1130 | dnl # |
1131 | AC_DEFUN([SPL_AC_GET_VMALLOC_INFO], [ | |
1132 | SPL_CHECK_SYMBOL_EXPORT( | |
1133 | [get_vmalloc_info], | |
1134 | [], | |
1135 | [AC_DEFINE(HAVE_GET_VMALLOC_INFO, 1, | |
1136 | [get_vmalloc_info() is available])], | |
1137 | []) | |
1138 | ]) | |
1139 | ||
5232d256 BB |
1140 | dnl # |
1141 | dnl # 2.6.17 API change | |
1142 | dnl # The helper functions first_online_pgdat(), next_online_pgdat(), and | |
1143 | dnl # next_zone() are introduced to simplify for_each_zone(). These symbols | |
1144 | dnl # were exported in 2.6.17 for use by modules which was consistent with | |
1145 | dnl # the previous implementation of for_each_zone(). From 2.6.18 - 2.6.19 | |
1146 | dnl # the symbols were exported as 'unused', and by 2.6.20 they exports | |
1147 | dnl # were dropped entirely leaving modules no way to directly iterate over | |
1148 | dnl # the zone list. Because we need access to the zone helpers we check | |
1149 | dnl # if the kernel contains the old or new implementation. Then we check | |
1150 | dnl # to see if the symbols we need for each version are available. If they | |
1151 | dnl # are not, dynamically aquire the addresses with kallsyms_lookup_name(). | |
1152 | dnl # | |
1153 | AC_DEFUN([SPL_AC_PGDAT_HELPERS], [ | |
1154 | AC_MSG_CHECKING([whether symbol *_pgdat exist]) | |
1155 | grep -q -E 'first_online_pgdat' $LINUX/include/linux/mmzone.h 2>/dev/null | |
1156 | rc=$? | |
1157 | if test $rc -eq 0; then | |
1158 | AC_MSG_RESULT([yes]) | |
1159 | AC_DEFINE(HAVE_PGDAT_HELPERS, 1, [pgdat helpers are available]) | |
1160 | else | |
1161 | AC_MSG_RESULT([no]) | |
1162 | fi | |
1163 | ]) | |
1164 | ||
d1ff2312 | 1165 | dnl # |
e11d6c5f BB |
1166 | dnl # Proposed API change, |
1167 | dnl # This symbol is not available in stock kernels. You may build a | |
1168 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1169 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1170 | dnl # your environment this is recommended. | |
36b313da BB |
1171 | dnl # |
1172 | AC_DEFUN([SPL_AC_FIRST_ONLINE_PGDAT], [ | |
1173 | SPL_CHECK_SYMBOL_EXPORT( | |
1174 | [first_online_pgdat], | |
1175 | [], | |
1176 | [AC_DEFINE(HAVE_FIRST_ONLINE_PGDAT, 1, | |
1177 | [first_online_pgdat() is available])], | |
1178 | []) | |
1179 | ]) | |
1180 | ||
1181 | dnl # | |
e11d6c5f BB |
1182 | dnl # Proposed API change, |
1183 | dnl # This symbol is not available in stock kernels. You may build a | |
1184 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1185 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1186 | dnl # your environment this is recommended. | |
36b313da BB |
1187 | dnl # |
1188 | AC_DEFUN([SPL_AC_NEXT_ONLINE_PGDAT], [ | |
1189 | SPL_CHECK_SYMBOL_EXPORT( | |
1190 | [next_online_pgdat], | |
1191 | [], | |
1192 | [AC_DEFINE(HAVE_NEXT_ONLINE_PGDAT, 1, | |
1193 | [next_online_pgdat() is available])], | |
1194 | []) | |
1195 | ]) | |
1196 | ||
1197 | dnl # | |
e11d6c5f BB |
1198 | dnl # Proposed API change, |
1199 | dnl # This symbol is not available in stock kernels. You may build a | |
1200 | dnl # custom kernel with the *-spl-export-symbols.patch which will export | |
1201 | dnl # these symbols for use. If your already rolling a custom kernel for | |
1202 | dnl # your environment this is recommended. | |
36b313da BB |
1203 | dnl # |
1204 | AC_DEFUN([SPL_AC_NEXT_ZONE], [ | |
1205 | SPL_CHECK_SYMBOL_EXPORT( | |
1206 | [next_zone], | |
1207 | [], | |
1208 | [AC_DEFINE(HAVE_NEXT_ZONE, 1, | |
1209 | [next_zone() is available])], | |
1210 | []) | |
1211 | ]) | |
4ab13d3b | 1212 | |
5232d256 BB |
1213 | dnl # |
1214 | dnl # 2.6.17 API change, | |
1215 | dnl # See SPL_AC_PGDAT_HELPERS for details. | |
1216 | dnl # | |
1217 | AC_DEFUN([SPL_AC_PGDAT_LIST], [ | |
1218 | SPL_CHECK_SYMBOL_EXPORT( | |
1219 | [pgdat_list], | |
1220 | [], | |
1221 | [AC_DEFINE(HAVE_PGDAT_LIST, 1, | |
1222 | [pgdat_list is available])], | |
1223 | []) | |
1224 | ]) | |
1225 | ||
96dded38 BB |
1226 | dnl # |
1227 | dnl # 2.6.18 API change, | |
1228 | dnl # First introduced global_page_state() support as an inline. | |
1229 | dnl # | |
1230 | AC_DEFUN([SPL_AC_GLOBAL_PAGE_STATE], [ | |
1231 | AC_MSG_CHECKING([whether global_page_state() is available]) | |
1232 | SPL_LINUX_TRY_COMPILE([ | |
6ae7fef5 | 1233 | #include <linux/mm.h> |
96dded38 BB |
1234 | ],[ |
1235 | unsigned long state; | |
6ae7fef5 | 1236 | state = global_page_state(0); |
96dded38 BB |
1237 | ],[ |
1238 | AC_MSG_RESULT(yes) | |
1239 | AC_DEFINE(HAVE_GLOBAL_PAGE_STATE, 1, | |
1240 | [global_page_state() is available]) | |
1241 | ],[ | |
1242 | AC_MSG_RESULT(no) | |
1243 | ]) | |
1244 | ]) | |
1245 | ||
e11d6c5f | 1246 | dnl # |
6ae7fef5 BB |
1247 | dnl # 2.6.21 API change (plus subsequent naming convention changes), |
1248 | dnl # Public global zone stats now include a free page count. However | |
1249 | dnl # the enumerated names of the counters have changed since this API | |
1250 | dnl # was introduced. We need to deduce the corrent name to use. This | |
1251 | dnl # replaces the priviate get_zone_counts() interface. | |
1252 | dnl # | |
1253 | dnl # NR_FREE_PAGES was available from 2.6.21 to current kernels, which | |
1254 | dnl # is 2.6.30 as of when this was written. | |
e11d6c5f | 1255 | dnl # |
6ae7fef5 BB |
1256 | AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_FREE], [ |
1257 | AC_MSG_CHECKING([whether page state NR_FREE_PAGES is available]) | |
e11d6c5f | 1258 | SPL_LINUX_TRY_COMPILE([ |
6ae7fef5 | 1259 | #include <linux/mm.h> |
e11d6c5f | 1260 | ],[ |
6ae7fef5 BB |
1261 | enum zone_stat_item zsi; |
1262 | zsi = NR_FREE_PAGES; | |
e11d6c5f BB |
1263 | ],[ |
1264 | AC_MSG_RESULT(yes) | |
6ae7fef5 BB |
1265 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES, 1, |
1266 | [Page state NR_FREE_PAGES is available]) | |
e11d6c5f BB |
1267 | ],[ |
1268 | AC_MSG_RESULT(no) | |
1269 | ]) | |
1270 | ]) | |
a093c6a4 | 1271 | |
6ae7fef5 BB |
1272 | dnl # |
1273 | dnl # 2.6.21 API change (plus subsequent naming convention changes), | |
1274 | dnl # Public global zone stats now include an inactive page count. However | |
1275 | dnl # the enumerated names of the counters have changed since this API | |
1276 | dnl # was introduced. We need to deduce the corrent name to use. This | |
1277 | dnl # replaces the priviate get_zone_counts() interface. | |
1278 | dnl # | |
1279 | dnl # NR_INACTIVE was available from 2.6.21 to 2.6.27 and included both | |
1280 | dnl # anonymous and file inactive pages. As of 2.6.28 it was split in | |
1281 | dnl # to NR_INACTIVE_ANON and NR_INACTIVE_FILE. | |
1282 | dnl # | |
1283 | AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_INACTIVE], [ | |
1284 | AC_MSG_CHECKING([whether page state NR_INACTIVE is available]) | |
1285 | SPL_LINUX_TRY_COMPILE([ | |
1286 | #include <linux/mm.h> | |
1287 | ],[ | |
1288 | enum zone_stat_item zsi; | |
1289 | zsi = NR_INACTIVE; | |
1290 | ],[ | |
1291 | AC_MSG_RESULT(yes) | |
1292 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE, 1, | |
1293 | [Page state NR_INACTIVE is available]) | |
1294 | ],[ | |
1295 | AC_MSG_RESULT(no) | |
1296 | ]) | |
1297 | ||
1298 | AC_MSG_CHECKING([whether page state NR_INACTIVE_ANON is available]) | |
1299 | SPL_LINUX_TRY_COMPILE([ | |
1300 | #include <linux/mm.h> | |
1301 | ],[ | |
1302 | enum zone_stat_item zsi; | |
1303 | zsi = NR_INACTIVE_ANON; | |
1304 | ],[ | |
1305 | AC_MSG_RESULT(yes) | |
1306 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON, 1, | |
1307 | [Page state NR_INACTIVE_ANON is available]) | |
1308 | ],[ | |
1309 | AC_MSG_RESULT(no) | |
1310 | ]) | |
1311 | ||
1312 | AC_MSG_CHECKING([whether page state NR_INACTIVE_FILE is available]) | |
1313 | SPL_LINUX_TRY_COMPILE([ | |
1314 | #include <linux/mm.h> | |
1315 | ],[ | |
1316 | enum zone_stat_item zsi; | |
1317 | zsi = NR_INACTIVE_FILE; | |
1318 | ],[ | |
1319 | AC_MSG_RESULT(yes) | |
1320 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE, 1, | |
1321 | [Page state NR_INACTIVE_FILE is available]) | |
1322 | ],[ | |
1323 | AC_MSG_RESULT(no) | |
1324 | ]) | |
1325 | ]) | |
1326 | ||
1327 | dnl # | |
1328 | dnl # 2.6.21 API change (plus subsequent naming convention changes), | |
1329 | dnl # Public global zone stats now include an active page count. However | |
1330 | dnl # the enumerated names of the counters have changed since this API | |
1331 | dnl # was introduced. We need to deduce the corrent name to use. This | |
1332 | dnl # replaces the priviate get_zone_counts() interface. | |
1333 | dnl # | |
1334 | dnl # NR_ACTIVE was available from 2.6.21 to 2.6.27 and included both | |
1335 | dnl # anonymous and file active pages. As of 2.6.28 it was split in | |
1336 | dnl # to NR_ACTIVE_ANON and NR_ACTIVE_FILE. | |
1337 | dnl # | |
1338 | AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_ACTIVE], [ | |
1339 | AC_MSG_CHECKING([whether page state NR_ACTIVE is available]) | |
1340 | SPL_LINUX_TRY_COMPILE([ | |
1341 | #include <linux/mm.h> | |
1342 | ],[ | |
1343 | enum zone_stat_item zsi; | |
1344 | zsi = NR_ACTIVE; | |
1345 | ],[ | |
1346 | AC_MSG_RESULT(yes) | |
1347 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE, 1, | |
1348 | [Page state NR_ACTIVE is available]) | |
1349 | ],[ | |
1350 | AC_MSG_RESULT(no) | |
1351 | ]) | |
1352 | ||
1353 | AC_MSG_CHECKING([whether page state NR_ACTIVE_ANON is available]) | |
1354 | SPL_LINUX_TRY_COMPILE([ | |
1355 | #include <linux/mm.h> | |
1356 | ],[ | |
1357 | enum zone_stat_item zsi; | |
1358 | zsi = NR_ACTIVE_ANON; | |
1359 | ],[ | |
1360 | AC_MSG_RESULT(yes) | |
1361 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON, 1, | |
1362 | [Page state NR_ACTIVE_ANON is available]) | |
1363 | ],[ | |
1364 | AC_MSG_RESULT(no) | |
1365 | ]) | |
1366 | ||
1367 | AC_MSG_CHECKING([whether page state NR_ACTIVE_FILE is available]) | |
1368 | SPL_LINUX_TRY_COMPILE([ | |
1369 | #include <linux/mm.h> | |
1370 | ],[ | |
1371 | enum zone_stat_item zsi; | |
1372 | zsi = NR_ACTIVE_FILE; | |
1373 | ],[ | |
1374 | AC_MSG_RESULT(yes) | |
1375 | AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE, 1, | |
1376 | [Page state NR_ACTIVE_FILE is available]) | |
1377 | ],[ | |
1378 | AC_MSG_RESULT(no) | |
1379 | ]) | |
1380 | ]) | |
1381 | ||
1382 | dnl # | |
1383 | dnl # Proposed API change for legacy kernels. | |
1384 | dnl # This symbol is not available in older kernels. For kernels post | |
1385 | dnl # 2.6.21 the global_page_state() API is used to get free/inactive/active | |
1386 | dnl # page state information. This symbol is only used in legacy kernels | |
1387 | dnl # any only as a last resort. | |
1388 | dnl | |
1389 | AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [ | |
1390 | AC_MSG_CHECKING([whether symbol get_zone_counts is needed]) | |
1391 | SPL_LINUX_TRY_COMPILE([ | |
1392 | ],[ | |
1393 | #if !defined(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES) | |
1394 | #error "global_page_state needs NR_FREE_PAGES" | |
1395 | #endif | |
1396 | ||
1397 | #if !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE) && \ | |
1398 | !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON) && \ | |
1399 | !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE) | |
1400 | #error "global_page_state needs NR_ACTIVE*" | |
1401 | #endif | |
1402 | ||
1403 | #if !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE) && \ | |
1404 | !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON) && \ | |
1405 | !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE) | |
1406 | #error "global_page_state needs NR_INACTIVE*" | |
1407 | #endif | |
1408 | ],[ | |
1409 | AC_MSG_RESULT(no) | |
1410 | ],[ | |
1411 | AC_MSG_RESULT(yes) | |
1412 | AC_DEFINE(NEED_GET_ZONE_COUNTS, 1, | |
1413 | [get_zone_counts() is needed]) | |
1414 | ||
1415 | SPL_CHECK_SYMBOL_EXPORT( | |
1416 | [get_zone_counts], | |
1417 | [], | |
1418 | [AC_DEFINE(HAVE_GET_ZONE_COUNTS, 1, | |
1419 | [get_zone_counts() is available])], | |
1420 | []) | |
1421 | ]) | |
1422 | ]) | |
1423 | ||
7119bf70 BB |
1424 | dnl # |
1425 | dnl # 2.6.27 API change, | |
1426 | dnl # The user_path_dir() replaces __user_walk() | |
1427 | dnl # | |
1428 | AC_DEFUN([SPL_AC_USER_PATH_DIR], [ | |
1429 | SPL_CHECK_SYMBOL_EXPORT( | |
1430 | [user_path_at], | |
1431 | [], | |
1432 | [AC_DEFINE(HAVE_USER_PATH_DIR, 1, | |
1433 | [user_path_dir() is available])], | |
1434 | []) | |
1435 | ]) | |
1436 | ||
51a727e9 BB |
1437 | dnl # |
1438 | dnl # Symbol available in RHEL kernels not in stock kernels. | |
1439 | dnl # | |
1440 | AC_DEFUN([SPL_AC_SET_FS_PWD], [ | |
1441 | SPL_CHECK_SYMBOL_EXPORT( | |
1442 | [set_fs_pwd], | |
1443 | [], | |
1444 | [AC_DEFINE(HAVE_SET_FS_PWD, 1, | |
1445 | [set_fs_pwd() is available])], | |
1446 | []) | |
1447 | ]) | |
1448 | ||
1449 | dnl # | |
1450 | dnl # 2.6.25 API change, | |
1451 | dnl # Simplied API by replacing mnt+dentry args with a single path arg. | |
1452 | dnl # | |
1453 | AC_DEFUN([SPL_AC_2ARGS_SET_FS_PWD], | |
1454 | [AC_MSG_CHECKING([whether set_fs_pwd() wants 2 args]) | |
1455 | SPL_LINUX_TRY_COMPILE([ | |
1456 | #include <linux/sched.h> | |
baf2979e | 1457 | #include <linux/fs_struct.h> |
51a727e9 BB |
1458 | ],[ |
1459 | set_fs_pwd(NULL, NULL); | |
1460 | ],[ | |
1461 | AC_MSG_RESULT(yes) | |
1462 | AC_DEFINE(HAVE_2ARGS_SET_FS_PWD, 1, | |
1463 | [set_fs_pwd() wants 2 args]) | |
1464 | ],[ | |
1465 | AC_MSG_RESULT(no) | |
1466 | ]) | |
1467 | ]) | |
1468 | ||
a093c6a4 BB |
1469 | dnl # |
1470 | dnl # SLES API change, never adopted in mainline, | |
1471 | dnl # Third 'struct vfsmount *' argument removed. | |
1472 | dnl # | |
1473 | AC_DEFUN([SPL_AC_2ARGS_VFS_UNLINK], | |
1474 | [AC_MSG_CHECKING([whether vfs_unlink() wants 2 args]) | |
1475 | SPL_LINUX_TRY_COMPILE([ | |
1476 | #include <linux/fs.h> | |
1477 | ],[ | |
1478 | vfs_unlink(NULL, NULL); | |
1479 | ],[ | |
1480 | AC_MSG_RESULT(yes) | |
1481 | AC_DEFINE(HAVE_2ARGS_VFS_UNLINK, 1, | |
1482 | [vfs_unlink() wants 2 args]) | |
1483 | ],[ | |
1484 | AC_MSG_RESULT(no) | |
1485 | ]) | |
1486 | ]) | |
1487 | ||
1488 | dnl # | |
1489 | dnl # SLES API change, never adopted in mainline, | |
1490 | dnl # Third and sixth 'struct vfsmount *' argument removed. | |
1491 | dnl # | |
1492 | AC_DEFUN([SPL_AC_4ARGS_VFS_RENAME], | |
1493 | [AC_MSG_CHECKING([whether vfs_rename() wants 4 args]) | |
1494 | SPL_LINUX_TRY_COMPILE([ | |
1495 | #include <linux/fs.h> | |
1496 | ],[ | |
1497 | vfs_rename(NULL, NULL, NULL, NULL); | |
1498 | ],[ | |
1499 | AC_MSG_RESULT(yes) | |
1500 | AC_DEFINE(HAVE_4ARGS_VFS_RENAME, 1, | |
1501 | [vfs_rename() wants 4 args]) | |
1502 | ],[ | |
1503 | AC_MSG_RESULT(no) | |
1504 | ]) | |
1505 | ]) | |
ec7d53e9 BB |
1506 | |
1507 | dnl # | |
1508 | dnl # 2.6.29 API change, | |
1509 | dnl # check whether 'struct cred' exists | |
1510 | dnl # | |
1511 | AC_DEFUN([SPL_AC_CRED_STRUCT], [ | |
1512 | AC_MSG_CHECKING([whether struct cred exists]) | |
1513 | SPL_LINUX_TRY_COMPILE([ | |
1514 | #include <linux/cred.h> | |
1515 | ],[ | |
1516 | struct cred *cr; | |
1517 | cr = NULL; | |
1518 | ],[ | |
1519 | AC_MSG_RESULT(yes) | |
1520 | AC_DEFINE(HAVE_CRED_STRUCT, 1, [struct cred exists]) | |
1521 | ],[ | |
1522 | AC_MSG_RESULT(no) | |
1523 | ]) | |
1524 | ]) | |
1525 | ||
1526 | dnl # | |
e811949a | 1527 | dnl # Custom SPL patch may export this symbol. |
ec7d53e9 BB |
1528 | dnl # |
1529 | AC_DEFUN([SPL_AC_GROUPS_SEARCH], [ | |
1530 | SPL_CHECK_SYMBOL_EXPORT( | |
1531 | [groups_search], | |
1532 | [], | |
1533 | [AC_DEFINE(HAVE_GROUPS_SEARCH, 1, | |
1534 | [groups_search() is available])], | |
1535 | []) | |
1536 | ]) | |
e811949a BB |
1537 | |
1538 | dnl # | |
1539 | dnl # 2.6.x API change, | |
1540 | dnl # __put_task_struct() was exported in RHEL5 but unavailable elsewhere. | |
1541 | dnl # | |
1542 | AC_DEFUN([SPL_AC_PUT_TASK_STRUCT], [ | |
1543 | SPL_CHECK_SYMBOL_EXPORT( | |
1544 | [__put_task_struct], | |
1545 | [], | |
1546 | [AC_DEFINE(HAVE_PUT_TASK_STRUCT, 1, | |
1547 | [__put_task_struct() is available])], | |
1548 | []) | |
1549 | ]) | |
3977f837 BB |
1550 | |
1551 | dnl # | |
1552 | dnl # 2.6.32 API change, | |
1553 | dnl # Unused 'struct file *' removed from prototype. | |
1554 | dnl # | |
1555 | AC_DEFUN([SPL_AC_5ARGS_PROC_HANDLER], [ | |
1556 | AC_MSG_CHECKING([whether proc_handler() wants 5 args]) | |
1557 | SPL_LINUX_TRY_COMPILE([ | |
1558 | #include <linux/sysctl.h> | |
1559 | ],[ | |
1560 | proc_dostring(NULL, 0, NULL, NULL, NULL); | |
1561 | ],[ | |
1562 | AC_MSG_RESULT(yes) | |
1563 | AC_DEFINE(HAVE_5ARGS_PROC_HANDLER, 1, | |
1564 | [proc_handler() wants 5 args]) | |
1565 | ],[ | |
1566 | AC_MSG_RESULT(no) | |
1567 | ]) | |
1568 | ]) | |
b868e22f BB |
1569 | |
1570 | dnl # | |
1571 | dnl # 2.6.x API change, | |
1572 | dnl # kvasprintf() function added. | |
1573 | dnl # | |
1574 | AC_DEFUN([SPL_AC_KVASPRINTF], [ | |
1575 | SPL_CHECK_SYMBOL_EXPORT( | |
1576 | [kvasprintf], | |
1577 | [], | |
1578 | [AC_DEFINE(HAVE_KVASPRINTF, 1, | |
1579 | [kvasprintf() is available])], | |
1580 | []) | |
1581 | ]) | |
f0ff89fc BB |
1582 | |
1583 | dnl # | |
1584 | dnl # 2.6.35 API change, | |
1585 | dnl # Unused 'struct dentry *' removed from prototype. | |
1586 | dnl # | |
1587 | AC_DEFUN([SPL_AC_3ARGS_FILE_FSYNC], [ | |
1588 | AC_MSG_CHECKING([whether file_fsync() wants 3 args]) | |
1589 | SPL_LINUX_TRY_COMPILE([ | |
1590 | #include <linux/buffer_head.h> | |
1591 | ],[ | |
1592 | file_fsync(NULL, NULL, 0); | |
1593 | ],[ | |
1594 | AC_MSG_RESULT(yes) | |
1595 | AC_DEFINE(HAVE_3ARGS_FILE_FSYNC, 1, | |
1596 | [file_fsync() wants 3 args]) | |
1597 | ],[ | |
1598 | AC_MSG_RESULT(no) | |
1599 | ]) | |
1600 | ]) |