]> git.proxmox.com Git - mirror_spl.git/blame - config/spl-build.m4
projects / mirror_spl.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Various spec file tweaks to handle rpm building of several distros.
[mirror_spl.git] / config / spl-build.m4
CommitLineData
86933a6e
BB		 1dnl #
2dnl # Default SPL kernel configuration
3dnl #
4AC_DEFUN([SPL_AC_CONFIG_KERNEL], [
5 SPL_AC_KERNEL
6
7 dnl # Kernel build make options
8 dnl # KERNELMAKE_PARAMS="V=1" # Enable verbose module build
9 KERNELMAKE_PARAMS="V=1"
10
11 dnl # -Wall -fno-strict-aliasing -Wstrict-prototypes and other
12 dnl # compiler options are added by the kernel build system.
13 abs_srcdir=`readlink -f ${srcdir}`
14 KERNELCPPFLAGS="$KERNELCPPFLAGS -Wstrict-prototypes -Werror"
15 KERNELCPPFLAGS="$KERNELCPPFLAGS -I${abs_srcdir} -I${abs_srcdir}/include"
16
17 if test "${LINUX_OBJ}" != "${LINUX}"; then
18 KERNELMAKE_PARAMS="$KERNELMAKE_PARAMS O=$LINUX_OBJ"
19 fi
20
21 AC_SUBST(KERNELMAKE_PARAMS)
22 AC_SUBST(KERNELCPPFLAGS)
23
24 SPL_AC_DEBUG
25 SPL_AC_DEBUG_KMEM
26 SPL_AC_DEBUG_MUTEX
27 SPL_AC_DEBUG_KSTAT
28 SPL_AC_DEBUG_CALLB
29 SPL_AC_TYPE_UINTPTR_T
30 SPL_AC_TYPE_ATOMIC64_T
31 SPL_AC_3ARGS_INIT_WORK
32 SPL_AC_2ARGS_REGISTER_SYSCTL
33 SPL_AC_SET_SHRINKER
34 SPL_AC_PATH_IN_NAMEIDATA
35 SPL_AC_TASK_CURR
36 SPL_AC_CTL_UNNUMBERED
37 SPL_AC_FLS64
38 SPL_AC_DEVICE_CREATE
39 SPL_AC_5ARGS_DEVICE_CREATE
40 SPL_AC_CLASS_DEVICE_CREATE
41 SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT
42 SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE
43 SPL_AC_TIMESPEC_SUB
44 SPL_AC_INIT_UTSNAME
45 SPL_AC_FDTABLE_HEADER
46 SPL_AC_FILES_FDTABLE
47 SPL_AC_UACCESS_HEADER
48 SPL_AC_KMALLOC_NODE
49 SPL_AC_MONOTONIC_CLOCK
50 SPL_AC_INODE_I_MUTEX
51 SPL_AC_MUTEX_LOCK_NESTED
52 SPL_AC_DIV64_64
53 SPL_AC_DIV64_U64
54 SPL_AC_3ARGS_ON_EACH_CPU
55 SPL_AC_KALLSYMS_LOOKUP_NAME
56 SPL_AC_GET_VMALLOC_INFO
57 SPL_AC_PGDAT_HELPERS
58 SPL_AC_FIRST_ONLINE_PGDAT
59 SPL_AC_NEXT_ONLINE_PGDAT
60 SPL_AC_NEXT_ZONE
61 SPL_AC_PGDAT_LIST
86933a6e 62 SPL_AC_GLOBAL_PAGE_STATE
6ae7fef5
BB		 63 SPL_AC_ZONE_STAT_ITEM_FREE
64 SPL_AC_ZONE_STAT_ITEM_INACTIVE
65 SPL_AC_ZONE_STAT_ITEM_ACTIVE
66 SPL_AC_GET_ZONE_COUNTS
86933a6e
BB		 67 SPL_AC_2ARGS_VFS_UNLINK
68 SPL_AC_4ARGS_VFS_RENAME
ec7d53e9
BB		 69 SPL_AC_CRED_STRUCT
70 SPL_AC_GROUPS_SEARCH
86933a6e
BB		 71])
72
73AC_DEFUN([SPL_AC_MODULE_SYMVERS], [
bb339d06 74 modpost=$LINUX/scripts/Makefile.modpost
86933a6e 75 AC_MSG_CHECKING([kernel file name for module symbols])
bb339d06
BB		 76 if test -f "$modpost"; then
77 if grep -q Modules.symvers $modpost; then
78 LINUX_SYMBOLS=Modules.symvers
79 else
80 LINUX_SYMBOLS=Module.symvers
81 fi
86933a6e 82 else
bb339d06 83 LINUX_SYMBOLS=NONE
86933a6e
BB		 84 fi
85 AC_MSG_RESULT($LINUX_SYMBOLS)
86 AC_SUBST(LINUX_SYMBOLS)
87])
88
57d86234 89AC_DEFUN([SPL_AC_KERNEL], [
57d86234 90 AC_ARG_WITH([linux],
91 AS_HELP_STRING([--with-linux=PATH],
92 [Path to kernel source]),
39a3d2a4 93 [kernelsrc="$withval"])
57d86234 94
95 AC_ARG_WITH([linux-obj],
96 AS_HELP_STRING([--with-linux-obj=PATH],
97 [Path to kernel build objects]),
98 [kernelbuild="$withval"])
99
100 AC_MSG_CHECKING([kernel source directory])
101 if test -z "$kernelsrc"; then
bf338d8d
BB		 102 sourcelink=`ls -1d /usr/src/kernels/* /usr/src/linux-* \
103 2>/dev/null | grep -v obj | tail -1`
57d86234 104
d4326403
BB		 105 if test -e ${sourcelink}; then
106 kernelsrc=`readlink -f ${sourcelink}`
d4326403 107 else
57d86234 108 AC_MSG_RESULT([Not found])
109 AC_MSG_ERROR([
110 *** Please specify the location of the kernel source
6a1c3d41 111 *** with the '--with-linux=PATH' option])
57d86234 112 fi
c5f70460
BB		 113 else
114 if test "$kernelsrc" = "NONE"; then
115 kernsrcver=NONE
116 fi
57d86234 117 fi
118
119 AC_MSG_RESULT([$kernelsrc])
120 AC_MSG_CHECKING([kernel build directory])
39a3d2a4 121 if test -z "$kernelbuild"; then
749e5eb1 122 if test -d ${kernelsrc}-obj/`arch`/`arch`; then
39a3d2a4 123 kernelbuild=${kernelsrc}-obj/`arch`/`arch`
749e5eb1
BB		 124 elif test -d ${kernelsrc}-obj/`arch`/default; then
125 kernelbuild=${kernelsrc}-obj/`arch`/default
39a3d2a4
BB		 126 elif test -d `dirname ${kernelsrc}`/build-`arch`; then
127 kernelbuild=`dirname ${kernelsrc}`/build-`arch`
128 else
129 kernelbuild=${kernelsrc}
130 fi
bf338d8d 131 fi
57d86234 132 AC_MSG_RESULT([$kernelbuild])
133
134 AC_MSG_CHECKING([kernel source version])
135 if test -r $kernelbuild/include/linux/version.h &&
136 fgrep -q UTS_RELEASE $kernelbuild/include/linux/version.h; then
137
138 kernsrcver=`(echo "#include <linux/version.h>";
139 echo "kernsrcver=UTS_RELEASE") |
d4326403 140 cpp -I $kernelbuild/include |
57d86234 141 grep "^kernsrcver=" | cut -d \" -f 2`
142
143 elif test -r $kernelbuild/include/linux/utsrelease.h &&
144 fgrep -q UTS_RELEASE $kernelbuild/include/linux/utsrelease.h; then
145
146 kernsrcver=`(echo "#include <linux/utsrelease.h>";
147 echo "kernsrcver=UTS_RELEASE") |
d4326403 148 cpp -I $kernelbuild/include |
57d86234 149 grep "^kernsrcver=" | cut -d \" -f 2`
150 fi
151
152 if test -z "$kernsrcver"; then
153 AC_MSG_RESULT([Not found])
154 AC_MSG_ERROR([
155 *** Cannot determine the version of the linux kernel source.
156 *** Please prepare the kernel before running this script])
157 fi
158
159 AC_MSG_RESULT([$kernsrcver])
160
57d86234 161 LINUX=${kernelsrc}
162 LINUX_OBJ=${kernelbuild}
c5f70460
BB		 163 LINUX_VERSION=${kernsrcver}
164
57d86234 165 AC_SUBST(LINUX)
166 AC_SUBST(LINUX_OBJ)
c5f70460 167 AC_SUBST(LINUX_VERSION)
57d86234 168
86933a6e 169 SPL_AC_MODULE_SYMVERS
2e0e7e69
BB		 170])
171
86933a6e
BB		 172dnl #
173dnl # Default SPL user configuration
174dnl #
175AC_DEFUN([SPL_AC_CONFIG_USER], [])
176
6a1c3d41 177AC_DEFUN([SPL_AC_LICENSE], [
86933a6e
BB		 178 AC_MSG_CHECKING([spl license])
179 LICENSE=GPL
180 AC_MSG_RESULT([$LICENSE])
6a1c3d41 181 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DHAVE_GPL_ONLY_SYMBOLS"
86933a6e
BB		 182 AC_SUBST(LICENSE)
183])
184
185AC_DEFUN([SPL_AC_CONFIG], [
186 SPL_CONFIG=all
187 AC_ARG_WITH([config],
188 AS_HELP_STRING([--with-config=CONFIG],
189 [Config file 'kernel|user|all']),
190 [SPL_CONFIG="$withval"])
191
192 AC_MSG_CHECKING([spl config])
193 AC_MSG_RESULT([$SPL_CONFIG]);
194 AC_SUBST(SPL_CONFIG)
195
196 case "$SPL_CONFIG" in
197 kernel) SPL_AC_CONFIG_KERNEL ;;
198 user) SPL_AC_CONFIG_USER ;;
199 all) SPL_AC_CONFIG_KERNEL
200 SPL_AC_CONFIG_USER ;;
201 *)
202 AC_MSG_RESULT([Error!])
203 AC_MSG_ERROR([Bad value "$SPL_CONFIG" for --with-config,
204 user kernel|user|all]) ;;
205 esac
206
207 AM_CONDITIONAL([CONFIG_USER],
208 [test "$SPL_CONFIG" = user] ||
209 [test "$SPL_CONFIG" = all])
210 AM_CONDITIONAL([CONFIG_KERNEL],
211 [test "$SPL_CONFIG" = kernel] ||
212 [test "$SPL_CONFIG" = all])
6a1c3d41 213])
214
57d86234 215AC_DEFUN([SPL_AC_DEBUG], [
216 AC_MSG_CHECKING([whether debugging is enabled])
217 AC_ARG_ENABLE( [debug],
218 AS_HELP_STRING([--enable-debug],
219 [Enable generic debug support (default off)]),
220 [ case "$enableval" in
221 yes) spl_ac_debug=yes ;;
475cdc78 222 no) spl_ac_debug=no ;;
57d86234 223 *) AC_MSG_RESULT([Error!])
224 AC_MSG_ERROR([Bad value "$enableval" for --enable-debug]) ;;
225 esac ]
226 )
227 if test "$spl_ac_debug" = yes; then
475cdc78 228 AC_MSG_RESULT([yes])
57d86234 229 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG"
230 else
475cdc78 231 AC_MSG_RESULT([no])
475cdc78 232 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DNDEBUG"
57d86234 233 fi
57d86234 234])
235
236AC_DEFUN([SPL_AC_DEBUG_KMEM], [
237 AC_MSG_CHECKING([whether kmem debugging is enabled])
238 AC_ARG_ENABLE( [debug-kmem],
239 AS_HELP_STRING([--enable-debug-kmem],
240 [Enable kmem debug support (default off)]),
241 [ case "$enableval" in
475cdc78 242 yes) spl_ac_debug_kmem=yes ;;
243 no) spl_ac_debug_kmem=no ;;
57d86234 244 *) AC_MSG_RESULT([Error!])
245 AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-kmem]) ;;
246 esac ]
247 )
475cdc78 248 if test "$spl_ac_debug_kmem" = yes; then
249 AC_MSG_RESULT([yes])
57d86234 250 AC_DEFINE([DEBUG_KMEM], [1],
251 [Define to 1 to enable kmem debugging])
475cdc78 252 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KMEM"
253 else
254 AC_MSG_RESULT([no])
57d86234 255 fi
57d86234 256])
257
258AC_DEFUN([SPL_AC_DEBUG_MUTEX], [
259 AC_MSG_CHECKING([whether mutex debugging is enabled])
260 AC_ARG_ENABLE( [debug-mutex],
261 AS_HELP_STRING([--enable-debug-mutex],
262 [Enable mutex debug support (default off)]),
263 [ case "$enableval" in
475cdc78 264 yes) spl_ac_debug_mutex=yes ;;
265 no) spl_ac_debug_mutex=no ;;
57d86234 266 *) AC_MSG_RESULT([Error!])
267 AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-mutex]) ;;
268 esac ]
269 )
475cdc78 270 if test "$spl_ac_debug_mutex" = yes; then
271 AC_MSG_RESULT([yes])
57d86234 272 AC_DEFINE([DEBUG_MUTEX], [1],
273 [Define to 1 to enable mutex debugging])
475cdc78 274 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_MUTEX"
275 else
276 AC_MSG_RESULT([no])
57d86234 277 fi
57d86234 278])
279
280AC_DEFUN([SPL_AC_DEBUG_KSTAT], [
281 AC_MSG_CHECKING([whether kstat debugging is enabled])
282 AC_ARG_ENABLE( [debug-kstat],
283 AS_HELP_STRING([--enable-debug-kstat],
284 [Enable kstat debug support (default off)]),
285 [ case "$enableval" in
475cdc78 286 yes) spl_ac_debug_kstat=yes ;;
287 no) spl_ac_debug_kstat=no ;;
57d86234 288 *) AC_MSG_RESULT([Error!])
289 AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-kstat]) ;;
290 esac ]
291 )
475cdc78 292 if test "$spl_ac_debug_kstat" = yes; then
293 AC_MSG_RESULT([yes])
57d86234 294 AC_DEFINE([DEBUG_KSTAT], [1],
295 [Define to 1 to enable kstat debugging])
475cdc78 296 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_KSTAT"
297 else
298 AC_MSG_RESULT([no])
57d86234 299 fi
57d86234 300])
301
302AC_DEFUN([SPL_AC_DEBUG_CALLB], [
303 AC_MSG_CHECKING([whether callb debugging is enabled])
304 AC_ARG_ENABLE( [debug-callb],
305 AS_HELP_STRING([--enable-debug-callb],
306 [Enable callb debug support (default off)]),
307 [ case "$enableval" in
475cdc78 308 yes) spl_ac_debug_callb=yes ;;
309 no) spl_ac_debug_callb=no ;;
57d86234 310 *) AC_MSG_RESULT([Error!])
311 AC_MSG_ERROR([Bad value "$enableval" for --enable-debug-callb]) ;;
312 esac ]
313 )
475cdc78 314 if test "$spl_ac_debug_callb" = yes; then
315 AC_MSG_RESULT([yes])
57d86234 316 AC_DEFINE([DEBUG_CALLB], [1],
317 [Define to 1 to enable callb debugging])
475cdc78 318 KERNELCPPFLAGS="${KERNELCPPFLAGS} -DDEBUG_CALLB"
319 else
320 AC_MSG_RESULT([no])
57d86234 321 fi
57d86234 322])
323
324dnl #
325dnl # SPL_LINUX_CONFTEST
326dnl #
327AC_DEFUN([SPL_LINUX_CONFTEST], [
328cat >conftest.c <<_ACEOF
329$1
330_ACEOF
331])
332
333dnl #
334dnl # SPL_LANG_PROGRAM(C)([PROLOGUE], [BODY])
335dnl #
336m4_define([SPL_LANG_PROGRAM], [
337$1
338int
339main (void)
340{
341dnl Do *not* indent the following line: there may be CPP directives.
342dnl Don't move the `;' right after for the same reason.
343$2
344 ;
345 return 0;
346}
347])
348
349dnl #
350dnl # SPL_LINUX_COMPILE_IFELSE / like AC_COMPILE_IFELSE
351dnl #
352AC_DEFUN([SPL_LINUX_COMPILE_IFELSE], [
c5f70460
BB		 353 m4_ifvaln([$1], [SPL_LINUX_CONFTEST([$1])])
354 rm -Rf build && mkdir -p build
355 echo "obj-m := conftest.o" >build/Makefile
356 AS_IF(
3d0cb2d3 357 [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		 358 [$4],
359 [_AC_MSG_LOG_CONFTEST m4_ifvaln([$5],[$5])]
360 )
361 rm -Rf build
57d86234 362])
363
364dnl #
365dnl # SPL_LINUX_TRY_COMPILE like AC_TRY_COMPILE
366dnl #
367AC_DEFUN([SPL_LINUX_TRY_COMPILE],
368 [SPL_LINUX_COMPILE_IFELSE(
d50bd9e2 369 [AC_LANG_SOURCE([SPL_LANG_PROGRAM([[$1]], [[$2]])])],
370 [modules],
371 [test -s build/conftest.o],
372 [$3], [$4])
57d86234 373])
374
375dnl #
376dnl # SPL_LINUX_CONFIG
377dnl #
378AC_DEFUN([SPL_LINUX_CONFIG],
379 [AC_MSG_CHECKING([whether Linux was built with CONFIG_$1])
380 SPL_LINUX_TRY_COMPILE([
381 #ifndef AUTOCONF_INCLUDED
382 #include <linux/config.h>
383 #endif
384 ],[
385 #ifndef CONFIG_$1
386 #error CONFIG_$1 not #defined
387 #endif
388 ],[
389 AC_MSG_RESULT([yes])
390 $2
391 ],[
392 AC_MSG_RESULT([no])
393 $3
394 ])
395])
396
397dnl #
398dnl # SPL_CHECK_SYMBOL_EXPORT
399dnl # check symbol exported or not
400dnl #
401AC_DEFUN([SPL_CHECK_SYMBOL_EXPORT],
402 [AC_MSG_CHECKING([whether symbol $1 is exported])
2e0e7e69
BB		 403 grep -q -E '[[[:space:]]]$1[[[:space:]]]' \
404 $LINUX_OBJ/Module*.symvers 2>/dev/null
57d86234 405 rc=$?
406 if test $rc -ne 0; then
407 export=0
408 for file in $2; do
2e0e7e69
BB		 409 grep -q -E "EXPORT_SYMBOL.*($1)" \
410 "$LINUX_OBJ/$file" 2>/dev/null
57d86234 411 rc=$?
412 if test $rc -eq 0; then
413 export=1
414 break;
415 fi
416 done
417 if test $export -eq 0; then
418 AC_MSG_RESULT([no])
419 $4
420 else
421 AC_MSG_RESULT([yes])
422 $3
423 fi
424 else
425 AC_MSG_RESULT([yes])
426 $3
427 fi
428])
429
86de8532 430dnl #
431dnl # SPL_CHECK_HEADER
432dnl # check whether header exists and define HAVE_$2_HEADER
433dnl #
434AC_DEFUN([SPL_CHECK_HEADER],
435 [AC_MSG_CHECKING([whether header $1 exists])
436 SPL_LINUX_TRY_COMPILE([
d50bd9e2 437 #include <$1>
86de8532 438 ],[
439 return 0;
440 ],[
441 AC_DEFINE(HAVE_$2_HEADER, 1, [$1 exists])
442 AC_MSG_RESULT(yes)
443 $3
444 ],[
445 AC_MSG_RESULT(no)
446 $4
447 ])
448])
6a6cafbe 449
57d86234 450dnl #
3d061e9d 451dnl # 2.6.24 API change,
57d86234 452dnl # check if uintptr_t typedef is defined
453dnl #
454AC_DEFUN([SPL_AC_TYPE_UINTPTR_T],
455 [AC_MSG_CHECKING([whether kernel defines uintptr_t])
456 SPL_LINUX_TRY_COMPILE([
d50bd9e2 457 #include <linux/types.h>
57d86234 458 ],[
d50bd9e2 459 uintptr_t *ptr;
57d86234 460 ],[
d50bd9e2 461 AC_MSG_RESULT([yes])
462 AC_DEFINE(HAVE_UINTPTR_T, 1,
57d86234 463 [kernel defines uintptr_t])
464 ],[
d50bd9e2 465 AC_MSG_RESULT([no])
57d86234 466 ])
467])
468
a0f6da3d 469dnl #
470dnl # 2.6.x API change,
471dnl # check if atomic64_t typedef is defined
472dnl #
473AC_DEFUN([SPL_AC_TYPE_ATOMIC64_T],
474 [AC_MSG_CHECKING([whether kernel defines atomic64_t])
475 SPL_LINUX_TRY_COMPILE([
476 #include <asm/atomic.h>
477 ],[
478 atomic64_t *ptr;
479 ],[
480 AC_MSG_RESULT([yes])
481 AC_DEFINE(HAVE_ATOMIC64_T, 1,
482 [kernel defines atomic64_t])
483 ],[
484 AC_MSG_RESULT([no])
485 ])
486])
487
57d86234 488dnl #
3d061e9d 489dnl # 2.6.20 API change,
57d86234 490dnl # INIT_WORK use 2 args and not store data inside
491dnl #
492AC_DEFUN([SPL_AC_3ARGS_INIT_WORK],
493 [AC_MSG_CHECKING([whether INIT_WORK wants 3 args])
494 SPL_LINUX_TRY_COMPILE([
d50bd9e2 495 #include <linux/workqueue.h>
57d86234 496 ],[
d50bd9e2 497 struct work_struct work;
498 INIT_WORK(&work, NULL, NULL);
57d86234 499 ],[
d50bd9e2 500 AC_MSG_RESULT(yes)
501 AC_DEFINE(HAVE_3ARGS_INIT_WORK, 1,
502 [INIT_WORK wants 3 args])
57d86234 503 ],[
d50bd9e2 504 AC_MSG_RESULT(no)
57d86234 505 ])
506])
507
508dnl #
3d061e9d 509dnl # 2.6.21 API change,
57d86234 510dnl # 'register_sysctl_table' use only one argument instead of two
511dnl #
512AC_DEFUN([SPL_AC_2ARGS_REGISTER_SYSCTL],
513 [AC_MSG_CHECKING([whether register_sysctl_table() wants 2 args])
514 SPL_LINUX_TRY_COMPILE([
d50bd9e2 515 #include <linux/sysctl.h>
57d86234 516 ],[
d50bd9e2 517 return register_sysctl_table(NULL,0);
57d86234 518 ],[
d50bd9e2 519 AC_MSG_RESULT(yes)
520 AC_DEFINE(HAVE_2ARGS_REGISTER_SYSCTL, 1,
521 [register_sysctl_table() wants 2 args])
57d86234 522 ],[
d50bd9e2 523 AC_MSG_RESULT(no)
57d86234 524 ])
525])
526
57d86234 527dnl #
3d061e9d 528dnl # 2.6.23 API change
57d86234 529dnl # Old set_shrinker API replaced with register_shrinker
530dnl #
531AC_DEFUN([SPL_AC_SET_SHRINKER], [
532 AC_MSG_CHECKING([whether set_shrinker() available])
533 SPL_LINUX_TRY_COMPILE([
534 #include <linux/mm.h>
535 ],[
536 return set_shrinker(DEFAULT_SEEKS, NULL);
537 ],[
538 AC_MSG_RESULT([yes])
539 AC_DEFINE(HAVE_SET_SHRINKER, 1,
540 [set_shrinker() available])
541 ],[
542 AC_MSG_RESULT([no])
543 ])
544])
545
546dnl #
3d061e9d 547dnl # 2.6.25 API change,
57d86234 548dnl # struct path entry added to struct nameidata
549dnl #
550AC_DEFUN([SPL_AC_PATH_IN_NAMEIDATA],
551 [AC_MSG_CHECKING([whether struct path used in struct nameidata])
552 SPL_LINUX_TRY_COMPILE([
d50bd9e2 553 #include <linux/namei.h>
57d86234 554 ],[
d50bd9e2 555 struct nameidata nd;
57d86234 556
557 nd.path.mnt = NULL;
558 nd.path.dentry = NULL;
559 ],[
d50bd9e2 560 AC_MSG_RESULT(yes)
561 AC_DEFINE(HAVE_PATH_IN_NAMEIDATA, 1,
562 [struct path used in struct nameidata])
57d86234 563 ],[
d50bd9e2 564 AC_MSG_RESULT(no)
57d86234 565 ])
566])
567
568dnl #
569dnl # Custom SPL patch may export this system it is not required
570dnl #
571AC_DEFUN([SPL_AC_TASK_CURR], [
572 SPL_CHECK_SYMBOL_EXPORT([task_curr], [kernel/sched.c],
573 [AC_DEFINE(HAVE_TASK_CURR, 1, [task_curr() exported])],
574 [])
575])
576
577dnl #
3d061e9d 578dnl # 2.6.19 API change,
57d86234 579dnl # Use CTL_UNNUMBERED when binary sysctl is not required
580dnl #
581AC_DEFUN([SPL_AC_CTL_UNNUMBERED],
582 [AC_MSG_CHECKING([whether unnumbered sysctl support exists])
583 SPL_LINUX_TRY_COMPILE([
d50bd9e2 584 #include <linux/sysctl.h>
57d86234 585 ],[
586 #ifndef CTL_UNNUMBERED
587 #error CTL_UNNUMBERED undefined
588 #endif
589 ],[
d50bd9e2 590 AC_MSG_RESULT(yes)
591 AC_DEFINE(HAVE_CTL_UNNUMBERED, 1,
592 [unnumbered sysctl support exists])
57d86234 593 ],[
d50bd9e2 594 AC_MSG_RESULT(no)
57d86234 595 ])
596])
877a32e9 597
598dnl #
599dnl # 2.6.16 API change.
600dnl # Check if 'fls64()' is available
601dnl #
602AC_DEFUN([SPL_AC_FLS64],
6a6cafbe 603 [AC_MSG_CHECKING([whether fls64() is available])
604 SPL_LINUX_TRY_COMPILE([
605 #include <linux/bitops.h>
606 ],[
607 return fls64(0);
608 ],[
609 AC_MSG_RESULT(yes)
610 AC_DEFINE(HAVE_FLS64, 1, [fls64() is available])
611 ],[
612 AC_MSG_RESULT(no)
613 ])
877a32e9 614])
46c685d0 615
616dnl #
617dnl # 2.6.18 API change, check whether device_create() is available.
618dnl # Device_create() was introduced in 2.6.18 and depricated
619dnl # class_device_create() which was fully removed in 2.6.26.
620dnl #
621AC_DEFUN([SPL_AC_DEVICE_CREATE], [
622 SPL_CHECK_SYMBOL_EXPORT(
623 [device_create],
624 [drivers/base/core.c],
625 [AC_DEFINE(HAVE_DEVICE_CREATE, 1,
626 [device_create() is available])],
6a6cafbe 627 [])
46c685d0 628])
629
8123ac4f
BB		 630dnl #
631dnl # 2.6.27 API change,
632dnl # device_create() uses 5 args, new 'drvdata' argument.
633dnl #
634AC_DEFUN([SPL_AC_5ARGS_DEVICE_CREATE], [
635 AC_MSG_CHECKING([whether device_create() wants 5 args])
636 tmp_flags="$EXTRA_KCFLAGS"
637 EXTRA_KCFLAGS="-Werror"
638 SPL_LINUX_TRY_COMPILE([
639 #include <linux/device.h>
640 ],[
641 device_create(NULL, NULL, 0, NULL, "%d", 1);
642 ],[
643 AC_MSG_RESULT(yes)
644 AC_DEFINE(HAVE_5ARGS_DEVICE_CREATE, 1,
645 [device_create wants 5 args])
646 ],[
647 AC_MSG_RESULT(no)
648 ])
649 EXTRA_KCFLAGS="$tmp_flags"
650])
651
46c685d0 652dnl #
653dnl # 2.6.13 API change, check whether class_device_create() is available.
654dnl # Class_device_create() was introduced in 2.6.13 and depricated
655dnl # class_simple_device_add() which was fully removed in 2.6.13.
656dnl #
657AC_DEFUN([SPL_AC_CLASS_DEVICE_CREATE], [
658 SPL_CHECK_SYMBOL_EXPORT(
659 [class_device_create],
660 [drivers/base/class.c],
661 [AC_DEFINE(HAVE_CLASS_DEVICE_CREATE, 1,
662 [class_device_create() is available])],
6a6cafbe 663 [])
46c685d0 664])
6a6cafbe 665
6a6cafbe 666dnl #
667dnl # 2.6.26 API change, set_normalized_timespec() is exported.
668dnl #
669AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_EXPORT], [
670 SPL_CHECK_SYMBOL_EXPORT(
671 [set_normalized_timespec],
672 [kernel/time.c],
673 [AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_EXPORT, 1,
674 [set_normalized_timespec() is available as export])],
675 [])
676])
677
678dnl #
679dnl # 2.6.16 API change, set_normalize_timespec() moved to time.c
680dnl # previously it was available in time.h as an inline.
681dnl #
86de8532 682AC_DEFUN([SPL_AC_SET_NORMALIZED_TIMESPEC_INLINE], [
683 AC_MSG_CHECKING([whether set_normalized_timespec() is an inline])
6a6cafbe 684 SPL_LINUX_TRY_COMPILE([
685 #include <linux/time.h>
6a6cafbe 686 void set_normalized_timespec(struct timespec *ts,
25557fd8 687 time_t sec, long nsec) { }
688 ],
689 [],
690 [
6a6cafbe 691 AC_MSG_RESULT(no)
692 ],[
693 AC_MSG_RESULT(yes)
694 AC_DEFINE(HAVE_SET_NORMALIZED_TIMESPEC_INLINE, 1,
695 [set_normalized_timespec() is available as inline])
696 ])
697])
698
699dnl #
700dnl # 2.6.18 API change,
701dnl # timespec_sub() inline function available in linux/time.h
702dnl #
86de8532 703AC_DEFUN([SPL_AC_TIMESPEC_SUB], [
704 AC_MSG_CHECKING([whether timespec_sub() is available])
6a6cafbe 705 SPL_LINUX_TRY_COMPILE([
706 #include <linux/time.h>
707 ],[
708 struct timespec a, b, c = { 0 };
709 c = timespec_sub(a, b);
710 ],[
711 AC_MSG_RESULT(yes)
712 AC_DEFINE(HAVE_TIMESPEC_SUB, 1, [timespec_sub() is available])
713 ],[
714 AC_MSG_RESULT(no)
715 ])
716])
717
86de8532 718dnl #
3d061e9d 719dnl # 2.6.19 API change,
720dnl # check if init_utsname() is available in linux/utsname.h
721dnl #
722AC_DEFUN([SPL_AC_INIT_UTSNAME], [
723 AC_MSG_CHECKING([whether init_utsname() is available])
724 SPL_LINUX_TRY_COMPILE([
725 #include <linux/utsname.h>
726 ],[
727 struct new_utsname *a = init_utsname();
728 ],[
729 AC_MSG_RESULT(yes)
730 AC_DEFINE(HAVE_INIT_UTSNAME, 1, [init_utsname() is available])
731 ],[
732 AC_MSG_RESULT(no)
733 ])
734])
735
736dnl #
737dnl # 2.6.26 API change,
738dnl # definition of struct fdtable relocated to linux/fdtable.h
86de8532 739dnl #
740AC_DEFUN([SPL_AC_FDTABLE_HEADER], [
741 SPL_CHECK_HEADER([linux/fdtable.h], [FDTABLE], [], [])
742])
322640b7 743
744dnl #
3d061e9d 745dnl # 2.6.14 API change,
746dnl # check whether 'files_fdtable()' exists
747dnl #
748AC_DEFUN([SPL_AC_FILES_FDTABLE], [
749 AC_MSG_CHECKING([whether files_fdtable() is available])
750 SPL_LINUX_TRY_COMPILE([
751 #include <linux/sched.h>
752 #include <linux/file.h>
753 #ifdef HAVE_FDTABLE_HEADER
754 #include <linux/fdtable.h>
755 #endif
756 ],[
757 struct files_struct *files = current->files;
758 struct fdtable *fdt = files_fdtable(files);
759 ],[
760 AC_MSG_RESULT(yes)
761 AC_DEFINE(HAVE_FILES_FDTABLE, 1, [files_fdtable() is available])
762 ],[
763 AC_MSG_RESULT(no)
764 ])
765])
766
767dnl #
768dnl # 2.6.18 API change,
769dnl # added linux/uaccess.h
322640b7 770dnl #
771AC_DEFUN([SPL_AC_UACCESS_HEADER], [
772 SPL_CHECK_HEADER([linux/uaccess.h], [UACCESS], [], [])
773])
3d061e9d 774
775dnl #
776dnl # 2.6.12 API change,
777dnl # check whether 'kmalloc_node()' is available.
778dnl #
779AC_DEFUN([SPL_AC_KMALLOC_NODE], [
780 AC_MSG_CHECKING([whether kmalloc_node() is available])
781 SPL_LINUX_TRY_COMPILE([
782 #include <linux/slab.h>
783 ],[
784 void *a = kmalloc_node(1, GFP_KERNEL, 0);
785 ],[
786 AC_MSG_RESULT(yes)
787 AC_DEFINE(HAVE_KMALLOC_NODE, 1, [kmalloc_node() is available])
788 ],[
789 AC_MSG_RESULT(no)
790 ])
791])
792
793dnl #
794dnl # 2.6.9 API change,
795dnl # check whether 'monotonic_clock()' is available it may
796dnl # be available for some archs but not others.
797dnl #
798AC_DEFUN([SPL_AC_MONOTONIC_CLOCK], [
799 SPL_CHECK_SYMBOL_EXPORT(
800 [monotonic_clock],
801 [],
802 [AC_DEFINE(HAVE_MONOTONIC_CLOCK, 1,
803 [monotonic_clock() is available])],
804 [])
805])
806
807dnl #
808dnl # 2.6.16 API change,
809dnl # check whether 'struct inode' has i_mutex
810dnl #
811AC_DEFUN([SPL_AC_INODE_I_MUTEX], [
812 AC_MSG_CHECKING([whether struct inode has i_mutex])
813 SPL_LINUX_TRY_COMPILE([
814 #include <linux/fs.h>
815 #include <linux/mutex.h>
816 ],[
817 struct inode i;
818 mutex_init(&i.i_mutex);
819 ],[
820 AC_MSG_RESULT(yes)
821 AC_DEFINE(HAVE_INODE_I_MUTEX, 1, [struct inode has i_mutex])
822 ],[
823 AC_MSG_RESULT(no)
824 ])
825])
b61a6e8b 826
6c9433c1
BB		 827dnl #
828dnl # 2.6.18 API change,
829dnl # First introduced 'mutex_lock_nested()' in include/linux/mutex.h,
830dnl # as part of the mutex validator. Fallback to using 'mutex_lock()'
831dnl # if the mutex validator is disabled or otherwise unavailable.
832dnl #
833AC_DEFUN([SPL_AC_MUTEX_LOCK_NESTED], [
834 AC_MSG_CHECKING([whether mutex_lock_nested() is available])
835 SPL_LINUX_TRY_COMPILE([
836 #include <linux/mutex.h>
837 ],[
838 struct mutex mutex;
839 mutex_init(&mutex);
840 mutex_lock_nested(&mutex, 0);
841 ],[
842 AC_MSG_RESULT(yes)
843 AC_DEFINE(HAVE_MUTEX_LOCK_NESTED, 1,
844 [mutex_lock_nested() is available])
845 ],[
846 AC_MSG_RESULT(no)
847 ])
848])
849
b61a6e8b 850dnl #
96dded38
BB		 851dnl # 2.6.22 API change,
852dnl # First introduced 'div64_64()' in lib/div64.c
853dnl
b61a6e8b 854AC_DEFUN([SPL_AC_DIV64_64], [
96dded38
BB		 855 SPL_CHECK_SYMBOL_EXPORT(
856 [div64_64],
857 [],
858 [AC_DEFINE(HAVE_DIV64_64, 1,
859 [div64_64() is available])],
860 [])
861])
862
863dnl #
864dnl # 2.6.26 API change,
865dnl # Renamed 'div64_64()' to 'div64_u64' in lib/div64.c
866dnl #
867AC_DEFUN([SPL_AC_DIV64_U64], [
868 SPL_CHECK_SYMBOL_EXPORT(
869 [div64_u64],
870 [],
871 [AC_DEFINE(HAVE_DIV64_U64, 1,
872 [div64_u64() is available])],
873 [])
b61a6e8b 874])
31a033ec
BB		 875
876dnl #
877dnl # 2.6.27 API change,
878dnl # on_each_cpu() uses 3 args, no 'retry' argument
879dnl #
880AC_DEFUN([SPL_AC_3ARGS_ON_EACH_CPU], [
881 AC_MSG_CHECKING([whether on_each_cpu() wants 3 args])
882 SPL_LINUX_TRY_COMPILE([
883 #include <linux/smp.h>
884 ],[
885 on_each_cpu(NULL, NULL, 0);
886 ],[
887 AC_MSG_RESULT(yes)
888 AC_DEFINE(HAVE_3ARGS_ON_EACH_CPU, 1,
889 [on_each_cpu wants 3 args])
890 ],[
891 AC_MSG_RESULT(no)
892 ])
893])
36b313da
BB		 894
895dnl #
d1ff2312
BB		 896dnl # 2.6.18 API change,
897dnl # kallsyms_lookup_name no longer exported
898dnl #
899AC_DEFUN([SPL_AC_KALLSYMS_LOOKUP_NAME], [
900 SPL_CHECK_SYMBOL_EXPORT(
901 [kallsyms_lookup_name],
902 [],
903 [AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1,
904 [kallsyms_lookup_name() is available])],
905 [])
906])
907
908dnl #
e11d6c5f
BB		 909dnl # Proposed API change,
910dnl # This symbol is not available in stock kernels. You may build a
911dnl # custom kernel with the *-spl-export-symbols.patch which will export
912dnl # these symbols for use. If your already rolling a custom kernel for
913dnl # your environment this is recommended.
d1ff2312
BB		 914dnl #
915AC_DEFUN([SPL_AC_GET_VMALLOC_INFO], [
916 SPL_CHECK_SYMBOL_EXPORT(
917 [get_vmalloc_info],
918 [],
919 [AC_DEFINE(HAVE_GET_VMALLOC_INFO, 1,
920 [get_vmalloc_info() is available])],
921 [])
922])
923
5232d256
BB		 924dnl #
925dnl # 2.6.17 API change
926dnl # The helper functions first_online_pgdat(), next_online_pgdat(), and
927dnl # next_zone() are introduced to simplify for_each_zone(). These symbols
928dnl # were exported in 2.6.17 for use by modules which was consistent with
929dnl # the previous implementation of for_each_zone(). From 2.6.18 - 2.6.19
930dnl # the symbols were exported as 'unused', and by 2.6.20 they exports
931dnl # were dropped entirely leaving modules no way to directly iterate over
932dnl # the zone list. Because we need access to the zone helpers we check
933dnl # if the kernel contains the old or new implementation. Then we check
934dnl # to see if the symbols we need for each version are available. If they
935dnl # are not, dynamically aquire the addresses with kallsyms_lookup_name().
936dnl #
937AC_DEFUN([SPL_AC_PGDAT_HELPERS], [
938 AC_MSG_CHECKING([whether symbol *_pgdat exist])
939 grep -q -E 'first_online_pgdat' $LINUX/include/linux/mmzone.h 2>/dev/null
940 rc=$?
941 if test $rc -eq 0; then
942 AC_MSG_RESULT([yes])
943 AC_DEFINE(HAVE_PGDAT_HELPERS, 1, [pgdat helpers are available])
944 else
945 AC_MSG_RESULT([no])
946 fi
947])
948
d1ff2312 949dnl #
e11d6c5f
BB		 950dnl # Proposed API change,
951dnl # This symbol is not available in stock kernels. You may build a
952dnl # custom kernel with the *-spl-export-symbols.patch which will export
953dnl # these symbols for use. If your already rolling a custom kernel for
954dnl # your environment this is recommended.
36b313da
BB		 955dnl #
956AC_DEFUN([SPL_AC_FIRST_ONLINE_PGDAT], [
957 SPL_CHECK_SYMBOL_EXPORT(
958 [first_online_pgdat],
959 [],
960 [AC_DEFINE(HAVE_FIRST_ONLINE_PGDAT, 1,
961 [first_online_pgdat() is available])],
962 [])
963])
964
965dnl #
e11d6c5f
BB		 966dnl # Proposed API change,
967dnl # This symbol is not available in stock kernels. You may build a
968dnl # custom kernel with the *-spl-export-symbols.patch which will export
969dnl # these symbols for use. If your already rolling a custom kernel for
970dnl # your environment this is recommended.
36b313da
BB		 971dnl #
972AC_DEFUN([SPL_AC_NEXT_ONLINE_PGDAT], [
973 SPL_CHECK_SYMBOL_EXPORT(
974 [next_online_pgdat],
975 [],
976 [AC_DEFINE(HAVE_NEXT_ONLINE_PGDAT, 1,
977 [next_online_pgdat() is available])],
978 [])
979])
980
981dnl #
e11d6c5f
BB		 982dnl # Proposed API change,
983dnl # This symbol is not available in stock kernels. You may build a
984dnl # custom kernel with the *-spl-export-symbols.patch which will export
985dnl # these symbols for use. If your already rolling a custom kernel for
986dnl # your environment this is recommended.
36b313da
BB		 987dnl #
988AC_DEFUN([SPL_AC_NEXT_ZONE], [
989 SPL_CHECK_SYMBOL_EXPORT(
990 [next_zone],
991 [],
992 [AC_DEFINE(HAVE_NEXT_ZONE, 1,
993 [next_zone() is available])],
994 [])
995])
4ab13d3b 996
5232d256
BB		 997dnl #
998dnl # 2.6.17 API change,
999dnl # See SPL_AC_PGDAT_HELPERS for details.
1000dnl #
1001AC_DEFUN([SPL_AC_PGDAT_LIST], [
1002 SPL_CHECK_SYMBOL_EXPORT(
1003 [pgdat_list],
1004 [],
1005 [AC_DEFINE(HAVE_PGDAT_LIST, 1,
1006 [pgdat_list is available])],
1007 [])
1008])
1009
96dded38
BB		 1010dnl #
1011dnl # 2.6.18 API change,
1012dnl # First introduced global_page_state() support as an inline.
1013dnl #
1014AC_DEFUN([SPL_AC_GLOBAL_PAGE_STATE], [
1015 AC_MSG_CHECKING([whether global_page_state() is available])
1016 SPL_LINUX_TRY_COMPILE([
6ae7fef5 1017 #include <linux/mm.h>
96dded38
BB		 1018 ],[
1019 unsigned long state;
6ae7fef5 1020 state = global_page_state(0);
96dded38
BB		 1021 ],[
1022 AC_MSG_RESULT(yes)
1023 AC_DEFINE(HAVE_GLOBAL_PAGE_STATE, 1,
1024 [global_page_state() is available])
1025 ],[
1026 AC_MSG_RESULT(no)
1027 ])
1028])
1029
e11d6c5f 1030dnl #
6ae7fef5
BB		 1031dnl # 2.6.21 API change (plus subsequent naming convention changes),
1032dnl # Public global zone stats now include a free page count. However
1033dnl # the enumerated names of the counters have changed since this API
1034dnl # was introduced. We need to deduce the corrent name to use. This
1035dnl # replaces the priviate get_zone_counts() interface.
1036dnl #
1037dnl # NR_FREE_PAGES was available from 2.6.21 to current kernels, which
1038dnl # is 2.6.30 as of when this was written.
e11d6c5f 1039dnl #
6ae7fef5
BB		 1040AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_FREE], [
1041 AC_MSG_CHECKING([whether page state NR_FREE_PAGES is available])
e11d6c5f 1042 SPL_LINUX_TRY_COMPILE([
6ae7fef5 1043 #include <linux/mm.h>
e11d6c5f 1044 ],[
6ae7fef5
BB		 1045 enum zone_stat_item zsi;
1046 zsi = NR_FREE_PAGES;
e11d6c5f
BB		 1047 ],[
1048 AC_MSG_RESULT(yes)
6ae7fef5
BB		 1049 AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES, 1,
1050 [Page state NR_FREE_PAGES is available])
e11d6c5f
BB		 1051 ],[
1052 AC_MSG_RESULT(no)
1053 ])
1054])
a093c6a4 1055
6ae7fef5
BB		 1056dnl #
1057dnl # 2.6.21 API change (plus subsequent naming convention changes),
1058dnl # Public global zone stats now include an inactive page count. However
1059dnl # the enumerated names of the counters have changed since this API
1060dnl # was introduced. We need to deduce the corrent name to use. This
1061dnl # replaces the priviate get_zone_counts() interface.
1062dnl #
1063dnl # NR_INACTIVE was available from 2.6.21 to 2.6.27 and included both
1064dnl # anonymous and file inactive pages. As of 2.6.28 it was split in
1065dnl # to NR_INACTIVE_ANON and NR_INACTIVE_FILE.
1066dnl #
1067AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_INACTIVE], [
1068 AC_MSG_CHECKING([whether page state NR_INACTIVE is available])
1069 SPL_LINUX_TRY_COMPILE([
1070 #include <linux/mm.h>
1071 ],[
1072 enum zone_stat_item zsi;
1073 zsi = NR_INACTIVE;
1074 ],[
1075 AC_MSG_RESULT(yes)
1076 AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE, 1,
1077 [Page state NR_INACTIVE is available])
1078 ],[
1079 AC_MSG_RESULT(no)
1080 ])
1081
1082 AC_MSG_CHECKING([whether page state NR_INACTIVE_ANON is available])
1083 SPL_LINUX_TRY_COMPILE([
1084 #include <linux/mm.h>
1085 ],[
1086 enum zone_stat_item zsi;
1087 zsi = NR_INACTIVE_ANON;
1088 ],[
1089 AC_MSG_RESULT(yes)
1090 AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON, 1,
1091 [Page state NR_INACTIVE_ANON is available])
1092 ],[
1093 AC_MSG_RESULT(no)
1094 ])
1095
1096 AC_MSG_CHECKING([whether page state NR_INACTIVE_FILE is available])
1097 SPL_LINUX_TRY_COMPILE([
1098 #include <linux/mm.h>
1099 ],[
1100 enum zone_stat_item zsi;
1101 zsi = NR_INACTIVE_FILE;
1102 ],[
1103 AC_MSG_RESULT(yes)
1104 AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE, 1,
1105 [Page state NR_INACTIVE_FILE is available])
1106 ],[
1107 AC_MSG_RESULT(no)
1108 ])
1109])
1110
1111dnl #
1112dnl # 2.6.21 API change (plus subsequent naming convention changes),
1113dnl # Public global zone stats now include an active page count. However
1114dnl # the enumerated names of the counters have changed since this API
1115dnl # was introduced. We need to deduce the corrent name to use. This
1116dnl # replaces the priviate get_zone_counts() interface.
1117dnl #
1118dnl # NR_ACTIVE was available from 2.6.21 to 2.6.27 and included both
1119dnl # anonymous and file active pages. As of 2.6.28 it was split in
1120dnl # to NR_ACTIVE_ANON and NR_ACTIVE_FILE.
1121dnl #
1122AC_DEFUN([SPL_AC_ZONE_STAT_ITEM_ACTIVE], [
1123 AC_MSG_CHECKING([whether page state NR_ACTIVE is available])
1124 SPL_LINUX_TRY_COMPILE([
1125 #include <linux/mm.h>
1126 ],[
1127 enum zone_stat_item zsi;
1128 zsi = NR_ACTIVE;
1129 ],[
1130 AC_MSG_RESULT(yes)
1131 AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE, 1,
1132 [Page state NR_ACTIVE is available])
1133 ],[
1134 AC_MSG_RESULT(no)
1135 ])
1136
1137 AC_MSG_CHECKING([whether page state NR_ACTIVE_ANON is available])
1138 SPL_LINUX_TRY_COMPILE([
1139 #include <linux/mm.h>
1140 ],[
1141 enum zone_stat_item zsi;
1142 zsi = NR_ACTIVE_ANON;
1143 ],[
1144 AC_MSG_RESULT(yes)
1145 AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON, 1,
1146 [Page state NR_ACTIVE_ANON is available])
1147 ],[
1148 AC_MSG_RESULT(no)
1149 ])
1150
1151 AC_MSG_CHECKING([whether page state NR_ACTIVE_FILE is available])
1152 SPL_LINUX_TRY_COMPILE([
1153 #include <linux/mm.h>
1154 ],[
1155 enum zone_stat_item zsi;
1156 zsi = NR_ACTIVE_FILE;
1157 ],[
1158 AC_MSG_RESULT(yes)
1159 AC_DEFINE(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE, 1,
1160 [Page state NR_ACTIVE_FILE is available])
1161 ],[
1162 AC_MSG_RESULT(no)
1163 ])
1164])
1165
1166dnl #
1167dnl # Proposed API change for legacy kernels.
1168dnl # This symbol is not available in older kernels. For kernels post
1169dnl # 2.6.21 the global_page_state() API is used to get free/inactive/active
1170dnl # page state information. This symbol is only used in legacy kernels
1171dnl # any only as a last resort.
1172dnl
1173AC_DEFUN([SPL_AC_GET_ZONE_COUNTS], [
1174 AC_MSG_CHECKING([whether symbol get_zone_counts is needed])
1175 SPL_LINUX_TRY_COMPILE([
1176 ],[
1177 #if !defined(HAVE_ZONE_STAT_ITEM_NR_FREE_PAGES)
1178 #error "global_page_state needs NR_FREE_PAGES"
1179 #endif
1180
1181 #if !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE) && \
1182 !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_ANON) && \
1183 !defined(HAVE_ZONE_STAT_ITEM_NR_ACTIVE_FILE)
1184 #error "global_page_state needs NR_ACTIVE*"
1185 #endif
1186
1187 #if !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE) && \
1188 !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_ANON) && \
1189 !defined(HAVE_ZONE_STAT_ITEM_NR_INACTIVE_FILE)
1190 #error "global_page_state needs NR_INACTIVE*"
1191 #endif
1192 ],[
1193 AC_MSG_RESULT(no)
1194 ],[
1195 AC_MSG_RESULT(yes)
1196 AC_DEFINE(NEED_GET_ZONE_COUNTS, 1,
1197 [get_zone_counts() is needed])
1198
1199 SPL_CHECK_SYMBOL_EXPORT(
1200 [get_zone_counts],
1201 [],
1202 [AC_DEFINE(HAVE_GET_ZONE_COUNTS, 1,
1203 [get_zone_counts() is available])],
1204 [])
1205 ])
1206])
1207
a093c6a4
BB		 1208dnl #
1209dnl # SLES API change, never adopted in mainline,
1210dnl # Third 'struct vfsmount *' argument removed.
1211dnl #
1212AC_DEFUN([SPL_AC_2ARGS_VFS_UNLINK],
1213 [AC_MSG_CHECKING([whether vfs_unlink() wants 2 args])
1214 SPL_LINUX_TRY_COMPILE([
1215 #include <linux/fs.h>
1216 ],[
1217 vfs_unlink(NULL, NULL);
1218 ],[
1219 AC_MSG_RESULT(yes)
1220 AC_DEFINE(HAVE_2ARGS_VFS_UNLINK, 1,
1221 [vfs_unlink() wants 2 args])
1222 ],[
1223 AC_MSG_RESULT(no)
1224 ])
1225])
1226
1227dnl #
1228dnl # SLES API change, never adopted in mainline,
1229dnl # Third and sixth 'struct vfsmount *' argument removed.
1230dnl #
1231AC_DEFUN([SPL_AC_4ARGS_VFS_RENAME],
1232 [AC_MSG_CHECKING([whether vfs_rename() wants 4 args])
1233 SPL_LINUX_TRY_COMPILE([
1234 #include <linux/fs.h>
1235 ],[
1236 vfs_rename(NULL, NULL, NULL, NULL);
1237 ],[
1238 AC_MSG_RESULT(yes)
1239 AC_DEFINE(HAVE_4ARGS_VFS_RENAME, 1,
1240 [vfs_rename() wants 4 args])
1241 ],[
1242 AC_MSG_RESULT(no)
1243 ])
1244])
ec7d53e9
BB		 1245
1246dnl #
1247dnl # 2.6.29 API change,
1248dnl # check whether 'struct cred' exists
1249dnl #
1250AC_DEFUN([SPL_AC_CRED_STRUCT], [
1251 AC_MSG_CHECKING([whether struct cred exists])
1252 SPL_LINUX_TRY_COMPILE([
1253 #include <linux/cred.h>
1254 ],[
1255 struct cred *cr;
1256 cr = NULL;
1257 ],[
1258 AC_MSG_RESULT(yes)
1259 AC_DEFINE(HAVE_CRED_STRUCT, 1, [struct cred exists])
1260 ],[
1261 AC_MSG_RESULT(no)
1262 ])
1263])
1264
1265dnl #
1266dnl # Custom SPL patch may export this symbol
1267dnl #
1268AC_DEFUN([SPL_AC_GROUPS_SEARCH], [
1269 SPL_CHECK_SYMBOL_EXPORT(
1270 [groups_search],
1271 [],
1272 [AC_DEFINE(HAVE_GROUPS_SEARCH, 1,
1273 [groups_search() is available])],
1274 [])
1275])
mirror of SPL module used by << 0.8.x ZFSOnLinux