4 # whether to enable various libcfs debugs (CDEBUG, ENTRY/EXIT, LASSERT, etc.)
6 AC_DEFUN([LIBCFS_CONFIG_CDEBUG], [
7 AC_MSG_CHECKING([whether to enable CDEBUG, CWARN])
8 AC_ARG_ENABLE([libcfs_cdebug],
9 AC_HELP_STRING([--disable-libcfs-cdebug],
10 [disable libcfs CDEBUG, CWARN]),
11 [], [enable_libcfs_cdebug="yes"])
12 AC_MSG_RESULT([$enable_libcfs_cdebug])
13 AS_IF([test "x$enable_libcfs_cdebug" = xyes],
14 [AC_DEFINE(CDEBUG_ENABLED, 1, [enable libcfs CDEBUG, CWARN])])
16 AC_MSG_CHECKING([whether to enable ENTRY/EXIT])
17 AC_ARG_ENABLE([libcfs_trace],
18 AC_HELP_STRING([--disable-libcfs-trace],
19 [disable libcfs ENTRY/EXIT]),
20 [], [enable_libcfs_trace="yes"])
21 AC_MSG_RESULT([$enable_libcfs_trace])
22 AS_IF([test "x$enable_libcfs_trace" = xyes],
23 [AC_DEFINE(CDEBUG_ENTRY_EXIT, 1, [enable libcfs ENTRY/EXIT])])
25 AC_MSG_CHECKING([whether to enable LASSERT, LASSERTF])
26 AC_ARG_ENABLE([libcfs_assert],
27 AC_HELP_STRING([--disable-libcfs-assert],
28 [disable libcfs LASSERT, LASSERTF]),
29 [], [enable_libcfs_assert="yes"])
30 AC_MSG_RESULT([$enable_libcfs_assert])
31 AS_IF([test x$enable_libcfs_assert = xyes],
32 [AC_DEFINE(LIBCFS_DEBUG, 1, [enable libcfs LASSERT, LASSERTF])])
33 ]) # LIBCFS_CONFIG_CDEBUG
36 # LIBCFS_CONFIG_PANIC_DUMPLOG
38 # check if tunable panic_dumplog is wanted
40 AC_DEFUN([LIBCFS_CONFIG_PANIC_DUMPLOG], [
41 AC_MSG_CHECKING([whether to use tunable 'panic_dumplog' support])
42 AC_ARG_ENABLE([panic_dumplog],
43 AC_HELP_STRING([--enable-panic_dumplog],
44 [enable panic_dumplog]),
45 [], [enable_panic_dumplog="no"])
46 AC_MSG_RESULT([$enable_panic_dumplog])
47 AS_IF([test "x$enable_panic_dumplog" = xyes],
48 [AC_DEFINE(LNET_DUMP_ON_PANIC, 1, [use dumplog on panic])])
49 ]) # LIBCFS_CONFIG_PANIC_DUMPLOG
52 # LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
54 # 2.6.32-30.el6 adds a new 'walk_stack' field in 'struct stacktrace_ops'
56 AC_DEFUN([LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK], [
57 LB_CHECK_COMPILE([if 'struct stacktrace_ops' has 'walk_stack' field],
58 stacktrace_ops_walk_stack, [
59 #include <asm/stacktrace.h>
61 ((struct stacktrace_ops *)0)->walk_stack(NULL, NULL, 0, NULL, NULL, NULL, NULL);
63 AC_DEFINE(STACKTRACE_OPS_HAVE_WALK_STACK, 1,
64 ['struct stacktrace_ops' has 'walk_stack' field])
66 ]) # LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
69 # LIBCFS_STACKTRACE_WARNING
71 # 3.0 removes stacktrace_ops warning* functions
73 AC_DEFUN([LIBCFS_STACKTRACE_WARNING], [
74 LB_CHECK_COMPILE([if 'stacktrace_ops.warning' is exist],
75 stacktrace_ops_warning, [
78 #include <asm/stacktrace.h>
80 ((struct stacktrace_ops *)0)->warning(NULL, NULL);
82 AC_DEFINE(HAVE_STACKTRACE_WARNING, 1,
83 [stacktrace_ops.warning is exist])
85 ]) # LIBCFS_STACKTRACE_WARNING
88 # LC_SHRINKER_WANT_SHRINK_PTR
90 # RHEL6/2.6.32 want to have pointer to shrinker self pointer in handler function
92 AC_DEFUN([LC_SHRINKER_WANT_SHRINK_PTR], [
93 LB_CHECK_COMPILE([if 'shrinker' want self pointer in handler],
94 shrink_self_pointer, [
97 struct shrinker *tmp = NULL;
98 tmp->shrink(tmp, 0, 0);
100 AC_DEFINE(HAVE_SHRINKER_WANT_SHRINK_PTR, 1,
101 [shrinker want self pointer in handler])
103 ]) # LC_SHRINKER_WANT_SHRINK_PTR
106 # LIBCFS_SYSCTL_CTLNAME
108 # 2.6.33 no longer has ctl_name & strategy field in struct ctl_table.
110 AC_DEFUN([LIBCFS_SYSCTL_CTLNAME], [
111 LB_CHECK_COMPILE([if 'ctl_table' has a 'ctl_name' field],
112 ctl_table_ctl_name, [
113 #include <linux/sysctl.h>
116 ct.ctl_name = sizeof(ct);
118 AC_DEFINE(HAVE_SYSCTL_CTLNAME, 1,
119 [ctl_table has ctl_name field])
121 ]) # LIBCFS_SYSCTL_CTLNAME
124 # LIBCFS_MODULE_LOCKING
126 # 2.6.36 introduced locking to module params. RHEL6 lacks this support
128 AC_DEFUN([LIBCFS_MODULE_LOCKING],[
129 LB_CHECK_COMPILE([does the kernel support module param locking],
130 module_param_locking, [
131 #include <linux/moduleparam.h>
133 __kernel_param_lock(NULL);
134 __kernel_param_unlock(NULL);
136 AC_DEFINE(HAVE_MODULE_PARAM_LOCKING, 1,
137 [locking module param is supported])
139 ]) # LIBCFS_MODULE_LOCKING
144 # 2.6.38 kstrtoul is added
146 AC_DEFUN([LIBCFS_KSTRTOUL], [
147 LB_CHECK_COMPILE([if Linux kernel has 'kstrtoul'],
149 #include <linux/kernel.h>
151 unsigned long result;
152 return kstrtoul("12345", 0, &result);
154 AC_DEFINE(HAVE_KSTRTOUL, 1,
155 [kernel has kstrtoul])
160 # LIBCFS_DUMP_TRACE_ADDRESS
162 # 2.6.39 adds a base pointer address argument to dump_trace
164 AC_DEFUN([LIBCFS_DUMP_TRACE_ADDRESS], [
165 LB_CHECK_COMPILE([if 'dump_trace' want address],
166 dump_trace_address, [
169 #include <asm/stacktrace.h>
171 dump_trace(NULL, NULL, NULL, 0, NULL, NULL);
173 AC_DEFINE(HAVE_DUMP_TRACE_ADDRESS, 1,
174 [dump_trace want address argument])
176 ]) # LIBCFS_DUMP_TRACE_ADDRESS
181 # FC15 2.6.40-5 backported the "shrink_control" parameter to the memory
182 # pressure shrinker from Linux 3.0
184 AC_DEFUN([LC_SHRINK_CONTROL], [
185 LB_CHECK_COMPILE([if 'shrink_control' is present],
187 #include <linux/atomic.h>
188 #include <linux/mm.h>
190 struct shrink_control tmp = {0};
191 tmp.nr_to_scan = sizeof(tmp);
193 AC_DEFINE(HAVE_SHRINK_CONTROL, 1,
194 [shrink_control is present])
196 ]) # LC_SHRINK_CONTROL
199 # LIBCFS_PROCESS_NAMESPACE
201 # 3.5 introduced process namespace
202 AC_DEFUN([LIBCFS_PROCESS_NAMESPACE], [
203 LB_CHECK_LINUX_HEADER([linux/uidgid.h], [
204 AC_DEFINE(HAVE_UIDGID_HEADER, 1,
205 [uidgid.h is present])])
206 ]) # LIBCFS_PROCESS_NAMESPACE
211 # 3.5 added helpers to read the new uid/gid types from VFS structures
212 # SLE11 SP3 has uidgid.h but not the helpers
214 AC_DEFUN([LIBCFS_I_UID_READ], [
215 LB_CHECK_COMPILE([if 'i_uid_read' is present],
217 #include <linux/fs.h>
221 AC_DEFINE(HAVE_I_UID_READ, 1, [i_uid_read is present])
223 ]) # LIBCFS_I_UID_READ
228 AC_DEFUN([LIBCFS_HAVE_CRC32], [
229 LB_CHECK_CONFIG_IM([CRC32],
230 [have_crc32="yes"], [have_crc32="no"])
231 AS_IF([test "x$have_crc32" = xyes],
232 [AC_DEFINE(HAVE_CRC32, 1,
233 [kernel compiled with CRC32 functions])])
234 ]) # LIBCFS_HAVE_CRC32
237 # LIBCFS_ENABLE_CRC32_ACCEL
239 AC_DEFUN([LIBCFS_ENABLE_CRC32_ACCEL], [
240 LB_CHECK_CONFIG_IM([CRYPTO_CRC32_PCLMUL],
241 [enable_crc32_crypto="no"], [enable_crc32_crypto="yes"])
242 AS_IF([test "x$have_crc32" = xyes -a "x$enable_crc32_crypto" = xyes], [
243 AC_DEFINE(NEED_CRC32_ACCEL, 1, [need pclmulqdq based crc32])
244 AC_MSG_WARN([No crc32 pclmulqdq crypto api found, enable internal pclmulqdq based crc32])])
245 ]) # LIBCFS_ENABLE_CRC32_ACCEL
248 # LIBCFS_ENABLE_CRC32C_ACCEL
250 AC_DEFUN([LIBCFS_ENABLE_CRC32C_ACCEL], [
251 LB_CHECK_CONFIG_IM([CRYPTO_CRC32C_INTEL],
252 [enable_crc32c_crypto="no"], [enable_crc32c_crypto="yes"])
253 AS_IF([test "x$enable_crc32c_crypto" = xyes], [
254 AC_DEFINE(NEED_CRC32C_ACCEL, 1, [need pclmulqdq based crc32c])
255 AC_MSG_WARN([No crc32c pclmulqdq crypto api found, enable internal pclmulqdq based crc32c])])
256 ]) # LIBCFS_ENABLE_CRC32C_ACCEL
259 # Kernel version v3.8-rc4-82-g4f522a247bc2 exported d_hash_and_lookup()
260 # It was added in v2.6.16-3821-g3e7e241f8c5c, so no worries about header.
262 AC_DEFUN([LIBCFS_D_HASH_AND_LOOKUP],[
263 LB_CHECK_EXPORT([d_hash_and_lookup], [fs/dcache.c],
264 [AC_DEFINE(HAVE_D_HASH_AND_LOOKUP, 1,
265 [d_hash_and_lookup is exported by the kernel])])
266 ]) # LIBCFS_D_HASH_AND_LOOKUP
269 # Kernel version 3.11 introduced ktime_get_ts64
271 AC_DEFUN([LIBCFS_KTIME_GET_TS64],[
272 LB_CHECK_COMPILE([does function 'ktime_get_ts64' exist],
274 #include <linux/hrtimer.h>
275 #include <linux/ktime.h>
277 struct timespec64 *ts = NULL;
281 AC_DEFINE(HAVE_KTIME_GET_TS64, 1,
282 ['ktime_get_ts64' is available])
284 ]) # LIBCFS_KTIME_GET_TS64
287 # Kernel version 3.12-rc4 commit c2d816443ef30 added prepare_to_wait_event()
289 AC_DEFUN([LIBCFS_PREPARE_TO_WAIT_EVENT],[
290 LB_CHECK_COMPILE([does function 'prepare_to_wait_event' exist],
291 prepare_to_wait_event, [
292 #include <linux/wait.h>
294 prepare_to_wait_event(NULL, NULL, 0);
296 AC_DEFINE(HAVE_PREPARE_TO_WAIT_EVENT, 1,
297 ['prepare_to_wait_event' is available])
299 ]) # LIBCFS_PREPARE_TO_WAIT_EVENT
302 # Linux kernel 3.12 introduced struct kernel_param_ops
303 # This has been backported to all lustre supported
304 # clients except RHEL6. We have to handle the differences.
306 AC_DEFUN([LIBCFS_KERNEL_PARAM_OPS],[
307 LB_CHECK_COMPILE([does 'struct kernel_param_ops' exist],
309 #include <linux/module.h>
311 struct kernel_param_ops ops;
315 AC_DEFINE(HAVE_KERNEL_PARAM_OPS, 1,
316 ['struct kernel_param_ops' is available])
318 ]) # LIBCFS_KERNEL_PARAM_OPS
321 # Kernel version 3.12 introduced ktime_add
323 AC_DEFUN([LIBCFS_KTIME_ADD],[
324 LB_CHECK_COMPILE([does function 'ktime_add' exist],
326 #include <linux/hrtimer.h>
327 #include <linux/ktime.h>
329 ktime_t start = ktime_set(0, 0);
333 total = ktime_add(start, end);
335 AC_DEFINE(HAVE_KTIME_ADD, 1,
336 [ktime_add is available])
338 ]) # LIBCFS_KTIME_ADD
341 # Kernel version 3.12 introduced ktime_after
343 AC_DEFUN([LIBCFS_KTIME_AFTER],[
344 LB_CHECK_COMPILE([does function 'ktime_after' exist],
346 #include <linux/hrtimer.h>
347 #include <linux/ktime.h>
349 ktime_t start = ktime_set(0, 0);
352 ktime_after(start, end);
354 AC_DEFINE(HAVE_KTIME_AFTER, 1,
355 [ktime_after is available])
357 ]) # LIBCFS_KTIME_AFTER
360 # Kernel version 3.12 introduced ktime_before
361 # See linux commit 67cb9366ff5f99868100198efba5ca88aaa6ad25
363 AC_DEFUN([LIBCFS_KTIME_BEFORE],[
364 LB_CHECK_COMPILE([does function 'ktime_before' exist],
366 #include <linux/hrtimer.h>
367 #include <linux/ktime.h>
369 ktime_t start = ktime_set(0, 0);
372 ktime_before(start, end);
374 AC_DEFINE(HAVE_KTIME_BEFORE, 1,
375 [ktime_before is available])
377 ]) # LIBCFS_KTIME_BEFORE
380 # Kernel version 3.12 introduced ktime_compare
382 AC_DEFUN([LIBCFS_KTIME_COMPARE],[
383 LB_CHECK_COMPILE([does function 'ktime_compare' exist],
385 #include <linux/hrtimer.h>
386 #include <linux/ktime.h>
388 ktime_t start = ktime_set(0, 0);
391 ktime_compare(start, end);
393 AC_DEFINE(HAVE_KTIME_COMPARE, 1,
394 [ktime_compare is available])
396 ]) # LIBCFS_KTIME_COMPARE
399 # FC19 3.12 kernel struct shrinker change
401 AC_DEFUN([LIBCFS_SHRINKER_COUNT],[
402 LB_CHECK_COMPILE([shrinker has 'count_objects'],
403 shrinker_count_objects, [
404 #include <linux/mmzone.h>
405 #include <linux/shrinker.h>
407 struct shrinker shrinker;
409 shrinker.count_objects = NULL;
411 AC_DEFINE(HAVE_SHRINKER_COUNT, 1,
412 [shrinker has count_objects member])
414 ]) # LIBCFS_SHRINKER_COUNT
417 # LIBCFS_IOV_ITER_HAS_TYPE
419 # kernel 3.15-rc4 commit 71d8e532b1549a478e6a6a8a44f309d050294d00
420 # start adding the tag to iov_iter
422 AC_DEFUN([LIBCFS_IOV_ITER_HAS_TYPE], [
423 tmp_flags="$EXTRA_KCFLAGS"
424 EXTRA_KCFLAGS="-Werror"
425 LB_CHECK_COMPILE([if iov_iter has member type],
426 iov_iter_has_type_member, [
427 #include <linux/uio.h>
429 struct iov_iter iter = { .type = ITER_KVEC };
432 AC_DEFINE(HAVE_IOV_ITER_HAS_TYPE_MEMBER, 1,
433 [if iov_iter has member type])
435 EXTRA_KCFLAGS="$tmp_flags"
436 ]) # LIBCFS_IOV_ITER_HAS_TYPE
439 # Kernel version 3.16 added rhashtable.h in 7e1e77636e36075eb
441 AC_DEFUN([LIBCFS_LINUX_RHASHTABLE_H],[
442 LB_CHECK_LINUX_HEADER([linux/rhashtable.h], [
443 AC_DEFINE(HAVE_LINUX_RHASHTABLE_H, 1,
444 [linux/rhashtable.h is present])
446 ]) # LIBCFS_LINUX_RHASHTABLE_H
449 # Kernel version 3.17 changed hlist_add_after to
452 AC_DEFUN([LIBCFS_HLIST_ADD_AFTER],[
453 LB_CHECK_COMPILE([does function 'hlist_add_after' exist],
455 #include <linux/list.h>
457 hlist_add_after(NULL, NULL);
459 AC_DEFINE(HAVE_HLIST_ADD_AFTER, 1,
460 [hlist_add_after is available])
462 ]) # LIBCFS_HLIST_ADD_AFTER
465 # Kernel version 3.17 introduced struct timespec64
467 AC_DEFUN([LIBCFS_TIMESPEC64],[
468 LB_CHECK_COMPILE([does 'struct timespec64' exist],
470 #include <linux/time.h>
472 struct timespec64 ts;
477 AC_DEFINE(HAVE_TIMESPEC64, 1,
478 ['struct timespec64' is available])
480 ]) # LIBCFS_TIMESPEC64
483 # Kernel version 3.17 introduced ktime_get_real_ts64
485 AC_DEFUN([LIBCFS_KTIME_GET_REAL_TS64],[
486 LB_CHECK_COMPILE([does function 'ktime_get_real_ts64' exist],
487 ktime_get_real_ts64, [
488 #include <linux/ktime.h>
490 struct timespec64 *ts = NULL;
492 ktime_get_real_ts64(ts);
494 AC_DEFINE(HAVE_KTIME_GET_REAL_TS64, 1,
495 ['ktime_get_real_ts64' is available])
497 ]) # LIBCFS_KTIME_GET_REAL_TS64
500 # Kernel version 3.17 introduced ktime_get_real_seconds
502 AC_DEFUN([LIBCFS_KTIME_GET_REAL_SECONDS],[
503 LB_CHECK_COMPILE([does function 'ktime_get_real_seconds' exist],
504 ktime_get_real_seconds, [
505 #include <linux/hrtimer.h>
506 #include <linux/ktime.h>
510 now = ktime_get_real_seconds();
512 AC_DEFINE(HAVE_KTIME_GET_REAL_SECONDS, 1,
513 ['ktime_get_real_seconds' is available])
515 ]) # LIBCFS_KTIME_GET_REAL_SECONDS
518 # Kernel version 3.17 created ktime_get_ns wrapper
520 AC_DEFUN([LIBCFS_KTIME_GET_NS],[
521 LB_CHECK_COMPILE([does function 'ktime_get_ns' exist],
523 #include <linux/hrtimer.h>
524 #include <linux/ktime.h>
528 nanoseconds = ktime_get_ns();
530 AC_DEFINE(NEED_KTIME_GET_NS, 1,
531 ['ktime_get_ns' is not available])
533 ]) # LIBCFS_KTIME_GET_NS
536 # Kernel version 3.17 created ktime_get_real_ns wrapper
538 AC_DEFUN([LIBCFS_KTIME_GET_REAL_NS],[
539 LB_CHECK_COMPILE([does function 'ktime_get_real_ns' exist],
541 #include <linux/hrtimer.h>
542 #include <linux/ktime.h>
546 nanoseconds = ktime_get_real_ns();
548 AC_DEFINE(NEED_KTIME_GET_REAL_NS, 1,
549 ['ktime_get_real_ns' is not available])
551 ]) # LIBCFS_KTIME_GET_REAL_NS
554 # Kernel version 3.17 introduced ktime_to_timespec64
556 AC_DEFUN([LIBCFS_KTIME_TO_TIMESPEC64],[
557 LB_CHECK_COMPILE([does function 'ktime_to_timespec64' exist],
558 ktime_to_timespec64, [
559 #include <linux/hrtimer.h>
560 #include <linux/ktime.h>
562 ktime_t now = ktime_set(0, 0);
563 struct timespec64 ts;
565 ts = ktime_to_timespec64(now);
567 AC_DEFINE(HAVE_KTIME_TO_TIMESPEC64, 1,
568 ['ktime_to_timespec64' is available])
570 ]) # LIBCFS_KTIME_TO_TIMESPEC64
573 # Kernel version 3.17 introduced timespec64_sub
575 AC_DEFUN([LIBCFS_TIMESPEC64_SUB],[
576 LB_CHECK_COMPILE([does function 'timespec64_sub' exist],
578 #include <linux/time.h>
580 struct timespec64 later = { }, earlier = { }, diff;
582 diff = timespec64_sub(later, earlier);
584 AC_DEFINE(HAVE_TIMESPEC64_SUB, 1,
585 ['timespec64_sub' is available])
587 ]) # LIBCFS_TIMESPEC64_SUB
590 # Kernel version 3.17 introduced timespec64_to_ktime
592 AC_DEFUN([LIBCFS_TIMESPEC64_TO_KTIME],[
593 LB_CHECK_COMPILE([does function 'timespec64_to_ktime' exist],
594 timespec64_to_ktime, [
595 #include <linux/ktime.h>
597 struct timespec64 ts;
600 now = timespec64_to_ktime(ts);
602 AC_DEFINE(HAVE_TIMESPEC64_TO_KTIME, 1,
603 ['timespec64_to_ktime' is available])
605 ]) # LIBCFS_TIMESPEC64_TO_KTIME
608 # Kernel version 3.19 introduced ktime_get_seconds
610 AC_DEFUN([LIBCFS_KTIME_GET_SECONDS],[
611 LB_CHECK_COMPILE([does function 'ktime_get_seconds' exist],
613 #include <linux/ktime.h>
617 now = ktime_get_seconds();
619 AC_DEFINE(HAVE_KTIME_GET_SECONDS, 1,
620 ['ktime_get_seconds' is available])
622 ]) # LIBCFS_KTIME_GET_SECONDS
625 # Kernel version 4.0 commit 41fbf3b39d5eca01527338b4d0ee15ee1ae1023c
626 # introduced the helper function ktime_ms_delta.
628 AC_DEFUN([LIBCFS_KTIME_MS_DELTA],[
629 LB_CHECK_COMPILE([does function 'ktime_ms_delta' exist],
631 #include <linux/ktime.h>
633 ktime_t start = ktime_set(0, 0);
636 ktime_ms_delta(start, end);
638 AC_DEFINE(HAVE_KTIME_MS_DELTA, 1,
639 ['ktime_ms_delta' is available])
641 ]) # LIBCFS_KTIME_MS_DELTA
644 # Kernel version 4.1 commit b51d23e4e9fea6f264d39535c2a62d1f51e7ccc3
645 # create per module locks which added kernel_param_[un]lock(). Older
646 # kernels you have to use __kernel_param_[un]lock(). In that case its
647 # a global lock for all modules but that is okay since its a rare event.
649 AC_DEFUN([LIBCFS_KERNEL_PARAM_LOCK],[
650 LB_CHECK_COMPILE([does function 'kernel_param_[un]lock' exist],
652 #include <linux/moduleparam.h>
654 kernel_param_lock(NULL);
655 kernel_param_unlock(NULL);
657 AC_DEFINE(HAVE_KERNEL_PARAM_LOCK, 1,
658 ['kernel_param_[un]lock' is available])
660 ]) # LIBCFS_KERNEL_PARAM_LOCK
663 # Kernel version 4.2 changed topology_thread_cpumask
664 # to topology_sibling_cpumask
666 AC_DEFUN([LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK],[
667 LB_CHECK_COMPILE([does function 'topology_sibling_cpumask' exist],
668 topology_sibling_cpumask, [
669 #include <linux/topology.h>
671 const struct cpumask *mask;
673 mask = topology_sibling_cpumask(0);
675 AC_DEFINE(HAVE_TOPOLOGY_SIBLING_CPUMASK, 1,
676 [topology_sibling_cpumask is available])
678 ]) # LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
681 # Kernel version 4.2 commit df6b35f409af0a8ff1ef62f552b8402f3fef8665
682 # header file i387.h was renamed to fpu/api.h
684 AC_DEFUN([LIBCFS_FPU_API], [
685 LB_CHECK_LINUX_HEADER([asm/fpu/api.h], [
686 AC_DEFINE(HAVE_FPU_API_HEADER, 1,
687 [fpu/api.h is present])])
691 # Kernel version 4.4 commit ef951599074ba4fad2d0efa0a977129b41e6d203
692 # introduced kstrtobool and kstrtobool_from_user.
694 AC_DEFUN([LIBCFS_KSTRTOBOOL_FROM_USER], [
695 LB_CHECK_COMPILE([if Linux kernel has 'kstrtobool_from_user'],
696 kstrtobool_from_user, [
697 #include <linux/kernel.h>
700 return kstrtobool_from_user(NULL, 0, &result);
702 AC_DEFINE(HAVE_KSTRTOBOOL_FROM_USER, 1,
703 [kernel has kstrtobool_from_user])
705 ]) # LIBCFS_KSTRTOBOOL_FROM_USER
708 # Kernel version 4.5-rc1 commit d12481bc58fba89427565f8592e88446ec084a24
709 # added crypto hash helpers
711 AC_DEFUN([LIBCFS_CRYPTO_HASH_HELPERS], [
712 LB_CHECK_COMPILE([does crypto hash helper functions exist],
713 crypto_hash_helpers, [
714 #include <crypto/hash.h>
716 crypto_ahash_alg_name(NULL);
717 crypto_ahash_driver_name(NULL);
719 AC_DEFINE(HAVE_CRYPTO_HASH_HELPERS, 1,
720 [crypto hash helper functions are available])
722 ]) # LIBCFS_CRYPTO_HASH_HELPERS
725 # Kernerl version 4.5-rc3 commit 2fe829aca9d7bed5fd6b49c6a1452e5e486b6cc3dd
726 # made kset_find_obj() exportable to modules
728 AC_DEFUN([LIBCFS_EXPORT_KSET_FIND_OBJ], [
729 LB_CHECK_EXPORT([kset_find_obj], [lib/kobject.c],
730 [AC_DEFINE(HAVE_KSET_FIND_OBJ, 1,
731 [kset_find_obj is exported by the kernel])])
732 ]) # LIBCFS_EXPORT_KSET_FIND_OBJ
735 # Kernel version 4.6+ commit ef703f49a6c5b909a85149bb6625c4ed0d697186
736 # fixed the brokenness of hash_64(). The fix removed GOLDEN_RATIO_PRIME_64
737 # since it was a poor prime value.
739 AC_DEFUN([LIBCFS_BROKEN_HASH_64], [
740 LB_CHECK_COMPILE([kernel has fixed hash_64()],
742 #include <linux/hash.h>
744 int tmp = GOLDEN_RATIO_PRIME_64;
746 AC_DEFINE(HAVE_BROKEN_HASH_64, 1, [kernel hash_64() is broken])
748 ]) # LIBCFS_BROKEN_HASH_64
751 # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
753 # linux 4.6 kernel changed stacktrace_ops address to return an int
755 AC_DEFUN([LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT], [
756 LB_CHECK_COMPILE([if 'struct stacktrace_ops' address function returns an int],
757 stacktrace_ops_address_return_int, [
758 #include <asm/stacktrace.h>
762 rc = ((struct stacktrace_ops *)0)->address(NULL, 0, 0);
764 AC_DEFINE(STACKTRACE_OPS_ADDRESS_RETURN_INT, 1,
765 ['struct stacktrace_ops' address function returns an int])
767 ]) # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
770 # Kernel version 4.6 removed both struct task_struct and struct mm_struct
771 # arguments to get_user_pages
773 AC_DEFUN([LIBCFS_GET_USER_PAGES_6ARG], [
774 LB_CHECK_COMPILE([if 'get_user_pages()' takes 6 arguments],
775 get_user_pages_6arg, [
776 #include <linux/mm.h>
780 rc = get_user_pages(0, 0, 0, 0, NULL, NULL);
782 AC_DEFINE(HAVE_GET_USER_PAGES_6ARG, 1,
783 [get_user_pages takes 6 arguments])
785 ]) # LIBCFS_GET_USER_PAGES_6ARG
790 # 4.6 kernel created stringhash.h which moved stuff out of dcache.h
791 # commit f4bcbe792b8f434e32487cff9d9e30ab45a3ce02
793 AC_DEFUN([LIBCFS_STRINGHASH], [
794 LB_CHECK_LINUX_HEADER([linux/stringhash.h], [
795 AC_DEFINE(HAVE_STRINGHASH, 1,
796 [stringhash.h is present])])
797 ]) # LIBCFS_STRINGHASH
800 # LIBCFS_RHASHTABLE_INSERT_FAST
802 # 4.7+ kernel commit 5ca8cc5bf11faed257c762018aea9106d529232f
803 # changed __rhashtable_insert_fast to support the new function
804 # rhashtable_lookup_get_insert_key().
806 AC_DEFUN([LIBCFS_RHASHTABLE_INSERT_FAST], [
807 tmp_flags="$EXTRA_KCFLAGS"
808 EXTRA_KCFLAGS="-Werror"
809 LB_CHECK_COMPILE([if internal '__rhashtable_insert_fast()' returns int],
810 rhashtable_insert_fast, [
811 #include <linux/rhashtable.h>
813 const struct rhashtable_params params = { 0 };
816 rc = __rhashtable_insert_fast(NULL, NULL, NULL, params);
818 AC_DEFINE(HAVE_HASHTABLE_INSERT_FAST_RETURN_INT, 1,
819 ['__rhashtable_insert_fast()' returns int])
821 EXTRA_KCFLAGS="$tmp_flags"
822 ]) # LIBCFS_RHASHTABLE_INSERT_FAST
825 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
826 # introduced rhashtable_lookup
828 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP], [
829 LB_CHECK_COMPILE([if 'rhashtable_lookup' exist],
831 #include <linux/rhashtable.h>
833 const struct rhashtable_params params = { 0 };
836 ret = rhashtable_lookup(NULL, NULL, params);
838 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP, 1,
839 [rhashtable_lookup() is available])
841 ]) # LIBCFS_RHASHTABLE_LOOKUP
845 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
846 # created the rhlist interface to allow inserting duplicate objects
847 # into the same table.
849 AC_DEFUN([LIBCFS_RHLTABLE], [
850 LB_CHECK_COMPILE([does 'struct rhltable' exist],
852 #include <linux/rhashtable.h>
854 struct rhltable *hlt;
856 rhltable_destroy(hlt);
858 AC_DEFINE(HAVE_RHLTABLE, 1,
859 [struct rhltable exist])
864 # LIBCFS_STACKTRACE_OPS
866 # Kernel version 4.8 commit c8fe4609827aedc9c4b45de80e7cdc8ccfa8541b
867 # removed both struct stacktrace_ops and dump_trace() function
869 AC_DEFUN([LIBCFS_STACKTRACE_OPS], [
870 LB_CHECK_COMPILE([if 'struct stacktrace_ops' exists],
874 #include <asm/stacktrace.h>
876 struct stacktrace_ops ops;
879 AC_DEFINE(HAVE_STACKTRACE_OPS, 1,
880 [struct stacktrace_ops exists])
882 ]) # LIBCFS_STACKTRACE_OPS
885 # Kernel version 4.9 commit 768ae309a96103ed02eb1e111e838c87854d8b51
886 # mm: replace get_user_pages() write/force parameters with gup_flags
888 AC_DEFUN([LIBCFS_GET_USER_PAGES_GUP_FLAGS], [
889 LB_CHECK_COMPILE([if 'get_user_pages()' takes gup_flags in arguments],
890 get_user_pages_gup_flags, [
891 #include <linux/mm.h>
894 rc = get_user_pages(0, 0, FOLL_WRITE, NULL, NULL);
896 AC_DEFINE(HAVE_GET_USER_PAGES_GUP_FLAGS, 1,
897 [get_user_pages takes gup_flags in arguments])
899 ]) # LIBCFS_GET_USER_PAGES_GUP_FLAGS
902 # Kernel version 4.10 commit 7b737965b33188bd3dbb44e938535c4006d97fbb
903 # libcfs: Convert to hotplug state machine
905 AC_DEFUN([LIBCFS_HOTPLUG_STATE_MACHINE], [
906 LB_CHECK_COMPILE([if libcfs supports CPU hotplug state machine],
907 cpu_hotplug_state_machine, [
908 #include <linux/cpuhotplug.h>
910 cpuhp_remove_state(CPUHP_LUSTRE_CFS_DEAD);
912 AC_DEFINE(HAVE_HOTPLUG_STATE_MACHINE, 1,
913 [hotplug state machine is supported])
915 ]) # LIBCFS_HOTPLUG_STATE_MACHINE
918 # LIBCFS_SCHED_HEADERS
920 # 4.11 has broken up sched.h into more headers.
922 AC_DEFUN([LIBCFS_SCHED_HEADERS], [
923 LB_CHECK_LINUX_HEADER([linux/sched/signal.h], [
924 AC_DEFINE(HAVE_SCHED_HEADERS, 1,
925 [linux/sched header directory exist])])
926 ]) # LIBCFS_SCHED_HEADERS
929 # Kernel version 4.11 commit f9fe1c12d126f9887441fa5bb165046f30ddd4b5
930 # introduced rhashtable_lookup_get_insert_fast
932 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST], [
933 LB_CHECK_COMPILE([if 'rhashtable_lookup_get_insert_fast' exist],
934 rhashtable_lookup_get_insert_fast, [
935 #include <linux/rhashtable.h>
937 const struct rhashtable_params params = { 0 };
940 ret = rhashtable_lookup_get_insert_fast(NULL, NULL, params);
942 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP_GET_INSERT_FAST, 1,
943 [rhashtable_lookup_get_insert_fast() is available])
945 ]) # LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
948 # Kernel verison 4.12-rc6 commit 5dd43ce2f69d42a71dcacdb13d17d8c0ac1fe8f7
951 AC_DEFUN([LIBCFS_HAVE_WAIT_BIT_HEADER], [
952 LB_CHECK_LINUX_HEADER([linux/wait_bit.h], [
953 AC_DEFINE(HAVE_WAIT_BIT_HEADER_H, 1,
954 [wait_bit.h is present])])
955 ]) # LIBCFS_HAVE_WAIT_BIT_HEADER
958 # Kernel version 4.12-rc6 commmit 2055da97389a605c8a00d163d40903afbe413921
960 # struct wait_queue_head::task_list => ::head
961 # struct wait_queue_entry::task_list => ::entry
963 AC_DEFUN([LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME], [
964 LB_CHECK_COMPILE([if linux wait_queue_head list_head is named head],
965 wait_queue_task_list, [
966 #include <linux/wait.h>
970 INIT_LIST_HEAD(&e.head);
972 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY_LIST, 1,
973 [linux wait_queue_head_t list_head is name head])
975 ]) # LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
978 # LIBCFS_WAIT_QUEUE_ENTRY
980 # Kernel version 4.13 ac6424b981bce1c4bc55675c6ce11bfe1bbfa64f
981 # Rename wait_queue_t => wait_queue_entry_t
983 AC_DEFUN([LIBCFS_WAIT_QUEUE_ENTRY], [
984 LB_CHECK_COMPILE([if 'wait_queue_entry_t' exists],
986 #include <linux/wait.h>
988 wait_queue_entry_t e;
992 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY, 1,
993 ['wait_queue_entry_t' is available])
995 ]) # LIBCFS_WAIT_QUEUE_ENTRY
998 # LIBCFS_NEW_KERNEL_WRITE
1000 # Kernel version 4.14 e13ec939e96b13e664bb6cee361cc976a0ee621a
1001 # changed kernel_write prototype to make is plug compatible
1002 # with the unexported vfs_write()
1004 AC_DEFUN([LIBCFS_NEW_KERNEL_WRITE], [
1005 tmp_flags="$EXTRA_KCFLAGS"
1006 EXTRA_KCFLAGS="-Werror"
1007 LB_CHECK_COMPILE([if 'kernel_write' matches other read/write helpers],
1008 kernel_write_match, [
1009 #include <linux/fs.h>
1011 const void *buf = NULL;
1013 return kernel_write(NULL, buf, 0, &pos);
1015 AC_DEFINE(HAVE_NEW_KERNEL_WRITE, 1,
1016 ['kernel_write' aligns with read/write helpers])
1018 EXTRA_KCFLAGS="$tmp_flags"
1019 ]) # LIBCFS_NEW_KERNEL_WRITE
1022 # LIBCFS_MM_TOTALRAM_PAGES_FUNC
1024 # kernel 5.0 commit ca79b0c211af63fa3276f0e3fd7dd9ada2439839
1025 # mm: convert totalram_pages and totalhigh_pages variables to atomic
1027 AC_DEFUN([LIBCFS_MM_TOTALRAM_PAGES_FUNC], [
1028 tmp_flags="$EXTRA_KCFLAGS"
1029 EXTRA_KCFLAGS="-Werror"
1030 LB_CHECK_COMPILE([if totalram_pages is a function],
1032 #include <linux/mm.h>
1034 totalram_pages_inc();
1036 AC_DEFINE(HAVE_TOTALRAM_PAGES_AS_FUNC, 1,
1037 [if totalram_pages is a function])
1039 EXTRA_KCFLAGS="$tmp_flags"
1040 ]) # LIBCFS_MM_TOTALRAM_PAGES_FUNC
1043 # LIBCFS_DEFINE_TIMER
1045 # Kernel version 4.14 commit 1d27e3e2252ba9d949ca82fbdb73cde102cb2067
1046 # remove expires and data arguments from DEFINE_TIMER. Also the callback
1047 # when from using unsigned long argument to using struct timer_list pointer.
1049 AC_DEFUN([LIBCFS_DEFINE_TIMER], [
1050 LB_CHECK_COMPILE([if DEFINE_TIMER takes only 2 arguments],
1052 #include <linux/timer.h>
1054 static DEFINE_TIMER(my_timer, NULL);
1056 AC_DEFINE(HAVE_NEW_DEFINE_TIMER, 1,
1057 [DEFINE_TIMER uses only 2 arguements])
1059 ]) # LIBCFS_DEFINE_TIMER
1062 # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1064 # Kernel 2.6.27 commit 8594698ebddeef5443b7da8258ae33b3eaca61d5
1065 # exported save_stack_trace_tsk for x86.
1066 # Kernel 2.6.27 commit 01f4b8b8b8db09b88be7df7e51192e4e678b69d3
1067 # exported save_stack_trace_tsk for powerpc
1068 # Kernel 4.13 commit e27c7fa015d61c8be6a2c32b2144aad2ae6ec975
1069 # exported save_stack_trace_tsk for arm64
1070 # Kernel 4.14 commit 9a3dc3186fc3795e076a4122da9e0258651a9631
1071 # exported save_stack_trace_tsk for arm
1073 AC_DEFUN([LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK], [
1074 LB_CHECK_EXPORT([save_stack_trace_tsk], [arch/$SUBARCH/kernel/stacktrace.c],
1075 [AC_DEFINE(HAVE_SAVE_STACK_TRACE_TSK, 1,
1076 [save_stack_trace_tsk is exported])])
1077 ]) # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1080 # LIBCFS_TIMER_SETUP
1082 # Kernel version 4.15 commit e99e88a9d2b067465adaa9c111ada99a041bef9a
1083 # setup_timer() was replaced by timer_setup(), where the callback
1084 # argument is the structure already holding the struct timer_list.
1086 AC_DEFUN([LIBCFS_TIMER_SETUP], [
1087 LB_CHECK_COMPILE([if setup_timer has been replaced with timer_setup],
1089 #include <linux/timer.h>
1091 timer_setup(NULL, NULL, 0);
1093 AC_DEFINE(HAVE_TIMER_SETUP, 1,
1094 [timer_setup has replaced setup_timer])
1096 ]) # LIBCFS_TIMER_SETUP
1099 # LIBCFS_WAIT_VAR_EVENT
1101 # Kernel version 4.16-rc4 commit 6b2bb7265f0b62605e8caee3613449ed0db270b9
1102 # added wait_var_event()
1104 AC_DEFUN([LIBCFS_WAIT_VAR_EVENT], [
1105 LB_CHECK_COMPILE([if 'wait_var_event' exist],
1107 #ifdef HAVE_WAIT_BIT_HEADER_H
1108 #include <linux/wait_bit.h>
1110 #include <linux/wait.h>
1114 AC_DEFINE(HAVE_WAIT_VAR_EVENT, 1,
1115 ['wait_var_event' is available])
1117 ]) # LIBCFS_WAIT_VAR_EVENT
1120 # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1122 # Kernel version 4.17-rc2 commit 8236b0ae31c837d2b3a2565c5f8d77f637e824cc
1123 # added clear_and_wake_up_bit()
1125 AC_DEFUN([LIBCFS_CLEAR_AND_WAKE_UP_BIT], [
1126 LB_CHECK_COMPILE([if 'clear_and_wake_up_bit' exist],
1127 clear_and_wake_up_bit, [
1128 #ifdef HAVE_WAIT_BIT_HEADER_H
1129 #include <linux/wait_bit.h>
1131 #include <linux/wait.h>
1133 clear_and_wake_up_bit(0, NULL);
1135 AC_DEFINE(HAVE_CLEAR_AND_WAKE_UP_BIT, 1,
1136 ['clear_and_wake_up_bit' is available])
1138 ]) # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1141 # LIBCFS_HAVE_IOV_ITER_TYPE
1143 # kernel 4.20 commit 00e23707442a75b404392cef1405ab4fd498de6b
1144 # iov_iter: Use accessor functions to access an iterator's type and direction.
1146 AC_DEFUN([LIBCFS_HAVE_IOV_ITER_TYPE], [
1147 tmp_flags="$EXTRA_KCFLAGS"
1148 EXTRA_KCFLAGS="-Werror"
1149 LB_CHECK_COMPILE([if iov_iter_type exists],
1150 macro_iov_iter_type_exists, [
1151 #include <linux/uio.h>
1153 struct iov_iter iter = { .type = ITER_KVEC };
1154 enum iter_type type = iov_iter_type(&iter);
1157 AC_DEFINE(HAVE_IOV_ITER_TYPE, 1,
1158 [if iov_iter_type exists])
1160 EXTRA_KCFLAGS="$tmp_flags"
1161 ]) # LIBCFS_HAVE_IOV_ITER_TYPE
1164 # LIBCFS_GET_REQUEST_KEY_AUTH
1166 # kernel 5.0 commit 822ad64d7e46a8e2c8b8a796738d7b657cbb146d
1167 # keys: Fix dependency loop between construction record and auth key
1169 # Added <keys/request_key_auth-type.h> and get_request_key_auth()
1170 # which was propagated to stable
1172 AC_DEFUN([LIBCFS_GET_REQUEST_KEY_AUTH], [
1173 tmp_flags="$EXTRA_KCFLAGS"
1174 EXTRA_KCFLAGS="-Werror"
1175 LB_CHECK_COMPILE([if get_request_key_auth() is available],
1176 get_request_key_auth_exported, [
1177 #include <linux/key.h>
1178 #include <linux/keyctl.h>
1179 #include <keys/request_key_auth-type.h>
1182 const struct key *key = NULL;
1183 struct request_key_auth *rka = get_request_key_auth(key);
1185 ring = key_get(rka->dest_keyring);
1187 AC_DEFINE(HAVE_GET_REQUEST_KEY_AUTH, 1,
1188 [get_request_key_auth() is available])
1190 EXTRA_KCFLAGS="$tmp_flags"
1191 ]) # LIBCFS_GET_REQUEST_KEY_AUTH
1194 # LIBCFS_LOOKUP_USER_KEY
1196 # kernel 5.3 commit 3cf5d076fb4d48979f382bc9452765bf8b79e740
1197 # signal: Remove task parameter from force_sig
1199 AC_DEFUN([LIBCFS_LOOKUP_USER_KEY], [
1200 tmp_flags="$EXTRA_KCFLAGS"
1201 EXTRA_KCFLAGS="-Werror"
1202 LB_CHECK_COMPILE([if lookup_user_key() is available],
1203 lookup_user_key_exported, [
1204 #include <linux/key.h>
1205 #include <linux/keyctl.h>
1207 lookup_user_key(KEY_SPEC_USER_KEYRING, 0, 0);
1209 AC_DEFINE(HAVE_LOOKUP_USER_KEY, 1,
1210 [lookup_user_key() is available])
1212 EXTRA_KCFLAGS="$tmp_flags"
1213 ]) # LIBCFS_LOOKUP_USER_KEY
1216 # LIBCFS_CACHE_DETAIL_WRITERS
1218 # kernel v5.3-rc2-1-g64a38e840ce5
1219 # SUNRPC: Track writers of the 'channel' file to improve cache_listeners_exist
1221 AC_DEFUN([LIBCFS_CACHE_DETAIL_WRITERS], [
1222 tmp_flags="$EXTRA_KCFLAGS"
1223 EXTRA_KCFLAGS="-Werror"
1224 LB_CHECK_COMPILE([if struct cache_detail has writers],
1225 cache_detail_writers_atomic, [
1226 #include <linux/sunrpc/cache.h>
1228 static struct cache_detail rsi_cache;
1230 atomic_set(&rsi_cache.writers, 0);
1232 AC_DEFINE(HAVE_CACHE_DETAIL_WRITERS, 1,
1233 [struct cache_detail has writers])
1235 EXTRA_KCFLAGS="$tmp_flags"
1236 ]) # LIBCFS_CACHE_DETAIL_WRITERS
1239 # LIBCFS_HAVE_NR_UNSTABLE_NFS
1241 # kernel v5.8-rc1~201^2~75
1242 # mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead
1244 AC_DEFUN([LIBCFS_HAVE_NR_UNSTABLE_NFS], [
1245 tmp_flags="$EXTRA_KCFLAGS"
1246 EXTRA_KCFLAGS="-Werror"
1247 LB_CHECK_COMPILE([if NR_UNSTABLE_NFS still in use],
1248 nr_unstable_nfs_exists, [
1249 #include <linux/mm.h>
1253 i = NR_UNSTABLE_NFS;
1255 AC_DEFINE(HAVE_NR_UNSTABLE_NFS, 1,
1256 [NR_UNSTABLE_NFS is still in use.])
1258 EXTRA_KCFLAGS="$tmp_flags"
1259 ]) # LIBCFS_HAVE_NR_UNSTABLE_NFS
1264 # LibCFS linux kernel checks
1266 AC_DEFUN([LIBCFS_PROG_LINUX], [
1267 AC_MSG_NOTICE([LibCFS kernel checks
1268 ==============================================================================])
1269 LIBCFS_CONFIG_PANIC_DUMPLOG
1272 LIBCFS_STACKTRACE_OPS_HAVE_WALK_STACK
1273 LC_SHRINKER_WANT_SHRINK_PTR
1275 LIBCFS_SYSCTL_CTLNAME
1277 LIBCFS_MODULE_LOCKING
1281 LIBCFS_DUMP_TRACE_ADDRESS
1285 LIBCFS_STACKTRACE_WARNING
1287 LIBCFS_PROCESS_NAMESPACE
1291 LIBCFS_D_HASH_AND_LOOKUP
1292 LIBCFS_ENABLE_CRC32_ACCEL
1294 LIBCFS_ENABLE_CRC32C_ACCEL
1296 LIBCFS_KTIME_GET_TS64
1298 LIBCFS_PREPARE_TO_WAIT_EVENT
1299 LIBCFS_KERNEL_PARAM_OPS
1303 LIBCFS_KTIME_COMPARE
1304 LIBCFS_SHRINKER_COUNT
1306 LIBCFS_IOV_ITER_HAS_TYPE
1308 LIBCFS_LINUX_RHASHTABLE_H
1310 LIBCFS_HLIST_ADD_AFTER
1313 LIBCFS_KTIME_GET_REAL_TS64
1314 LIBCFS_KTIME_GET_REAL_SECONDS
1315 LIBCFS_KTIME_GET_REAL_NS
1316 LIBCFS_KTIME_TO_TIMESPEC64
1317 LIBCFS_TIMESPEC64_SUB
1318 LIBCFS_TIMESPEC64_TO_KTIME
1320 LIBCFS_KTIME_GET_SECONDS
1322 LIBCFS_KTIME_MS_DELTA
1324 LIBCFS_KERNEL_PARAM_LOCK
1326 LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
1329 LIBCFS_KSTRTOBOOL_FROM_USER
1331 LIBCFS_CRYPTO_HASH_HELPERS
1332 LIBCFS_EXPORT_KSET_FIND_OBJ
1334 LIBCFS_BROKEN_HASH_64
1335 LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
1336 LIBCFS_GET_USER_PAGES_6ARG
1339 LIBCFS_RHASHTABLE_INSERT_FAST
1341 LIBCFS_RHASHTABLE_LOOKUP
1343 LIBCFS_STACKTRACE_OPS
1345 LIBCFS_GET_USER_PAGES_GUP_FLAGS
1347 LIBCFS_HOTPLUG_STATE_MACHINE
1349 LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
1350 LIBCFS_SCHED_HEADERS
1352 LIBCFS_HAVE_WAIT_BIT_HEADER
1353 LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
1355 LIBCFS_WAIT_QUEUE_ENTRY
1358 LIBCFS_NEW_KERNEL_WRITE
1359 LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1363 LIBCFS_WAIT_VAR_EVENT
1365 LIBCFS_CLEAR_AND_WAKE_UP_BIT
1367 LIBCFS_HAVE_IOV_ITER_TYPE
1369 LIBCFS_MM_TOTALRAM_PAGES_FUNC
1370 LIBCFS_GET_REQUEST_KEY_AUTH
1372 LIBCFS_LOOKUP_USER_KEY
1373 LIBCFS_CACHE_DETAIL_WRITERS
1374 LIBCFS_HAVE_NR_UNSTABLE_NFS
1375 ]) # LIBCFS_PROG_LINUX
1378 # LIBCFS_PATH_DEFAULTS
1380 # default paths for installed files
1382 AC_DEFUN([LIBCFS_PATH_DEFAULTS], [
1383 ]) # LIBCFS_PATH_DEFAULTS
1388 # other configure checks
1390 AC_DEFUN([LIBCFS_CONFIGURE], [
1391 AC_MSG_NOTICE([LibCFS core checks
1392 ==============================================================================])
1394 # libcfs/libcfs/util/nidstrings.c
1395 AC_CHECK_HEADERS([netdb.h asm/types.h endian.h])
1396 AC_CHECK_FUNCS([gethostbyname])
1398 # -------- Check for required packages --------------
1400 AC_MSG_NOTICE([LibCFS required packages checks
1401 ==============================================================================])
1403 AC_MSG_CHECKING([whether to enable readline support])
1404 AC_ARG_ENABLE(readline,
1405 AC_HELP_STRING([--disable-readline],
1406 [disable readline support]),
1407 [], [enable_readline="yes"])
1408 AC_MSG_RESULT([$enable_readline])
1411 AS_IF([test "x$enable_readline" = xyes], [
1412 AC_CHECK_LIB([readline], [readline], [
1413 LIBREADLINE="-lreadline"
1414 AC_DEFINE(HAVE_LIBREADLINE, 1,
1415 [readline library is available])
1418 AC_SUBST(LIBREADLINE)
1420 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
1421 AC_ARG_ENABLE([libpthread],
1422 AC_HELP_STRING([--disable-libpthread],
1423 [disable libpthread]),
1424 [], [enable_libpthread="yes"])
1425 AC_MSG_RESULT([$enable_libpthread])
1428 AS_IF([test "x$enable_libpthread" = xyes], [
1429 AC_CHECK_LIB([pthread], [pthread_create], [
1430 PTHREAD_LIBS="-lpthread"
1431 AC_DEFINE([HAVE_LIBPTHREAD], 1,
1432 [use libpthread for libcfs library])
1435 AC_MSG_WARN([Using libpthread for libcfs library is disabled explicitly])
1437 AC_SUBST(PTHREAD_LIBS)
1438 ]) # LIBCFS_CONFIGURE
1441 # LIBCFS_CONDITIONALS
1443 AC_DEFUN([LIBCFS_CONDITIONALS], [
1444 AM_CONDITIONAL(HAVE_CRC32, [test "x$have_crc32" = xyes])
1445 AM_CONDITIONAL(NEED_PCLMULQDQ_CRC32, [test "x$have_crc32" = xyes -a "x$enable_crc32_crypto" = xyes])
1446 AM_CONDITIONAL(NEED_PCLMULQDQ_CRC32C, [test "x$enable_crc32c_crypto" = xyes])
1447 ]) # LIBCFS_CONDITIONALS
1450 # LIBCFS_CONFIG_FILES
1452 # files that should be generated with AC_OUTPUT
1454 AC_DEFUN([LIBCFS_CONFIG_FILES], [
1458 libcfs/autoconf/Makefile
1459 libcfs/include/Makefile
1460 libcfs/include/libcfs/Makefile
1461 libcfs/include/libcfs/linux/Makefile
1462 libcfs/include/libcfs/util/Makefile
1463 libcfs/libcfs/Makefile
1464 libcfs/libcfs/autoMakefile
1465 libcfs/libcfs/linux/Makefile
1466 libcfs/libcfs/util/Makefile
1468 ]) # LIBCFS_CONFIG_FILES