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 3.11 introduced ktime_get_ts64
261 AC_DEFUN([LIBCFS_KTIME_GET_TS64],[
262 LB_CHECK_COMPILE([does function 'ktime_get_ts64' exist],
264 #include <linux/hrtimer.h>
265 #include <linux/ktime.h>
267 struct timespec64 *ts = NULL;
271 AC_DEFINE(HAVE_KTIME_GET_TS64, 1,
272 ['ktime_get_ts64' is available])
274 ]) # LIBCFS_KTIME_GET_TS64
277 # Kernel version 3.12-rc4 commit c2d816443ef30 added prepare_to_wait_event()
279 AC_DEFUN([LIBCFS_PREPARE_TO_WAIT_EVENT],[
280 LB_CHECK_COMPILE([does function 'prepare_to_wait_event' exist],
281 prepare_to_wait_event, [
282 #include <linux/wait.h>
284 prepare_to_wait_event(NULL, NULL, 0);
286 AC_DEFINE(HAVE_PREPARE_TO_WAIT_EVENT, 1,
287 ['prepare_to_wait_event' is available])
289 ]) # LIBCFS_PREPARE_TO_WAIT_EVENT
292 # Linux kernel 3.12 introduced struct kernel_param_ops
293 # This has been backported to all lustre supported
294 # clients except RHEL6. We have to handle the differences.
296 AC_DEFUN([LIBCFS_KERNEL_PARAM_OPS],[
297 LB_CHECK_COMPILE([does 'struct kernel_param_ops' exist],
299 #include <linux/module.h>
301 struct kernel_param_ops ops;
305 AC_DEFINE(HAVE_KERNEL_PARAM_OPS, 1,
306 ['struct kernel_param_ops' is available])
308 ]) # LIBCFS_KERNEL_PARAM_OPS
311 # Kernel version 3.12 introduced ktime_add
313 AC_DEFUN([LIBCFS_KTIME_ADD],[
314 LB_CHECK_COMPILE([does function 'ktime_add' exist],
316 #include <linux/hrtimer.h>
317 #include <linux/ktime.h>
319 ktime_t start = ktime_set(0, 0);
323 total = ktime_add(start, end);
325 AC_DEFINE(HAVE_KTIME_ADD, 1,
326 [ktime_add is available])
328 ]) # LIBCFS_KTIME_ADD
331 # Kernel version 3.12 introduced ktime_after
333 AC_DEFUN([LIBCFS_KTIME_AFTER],[
334 LB_CHECK_COMPILE([does function 'ktime_after' exist],
336 #include <linux/hrtimer.h>
337 #include <linux/ktime.h>
339 ktime_t start = ktime_set(0, 0);
342 ktime_after(start, end);
344 AC_DEFINE(HAVE_KTIME_AFTER, 1,
345 [ktime_after is available])
347 ]) # LIBCFS_KTIME_AFTER
350 # Kernel version 3.12 introduced ktime_before
351 # See linux commit 67cb9366ff5f99868100198efba5ca88aaa6ad25
353 AC_DEFUN([LIBCFS_KTIME_BEFORE],[
354 LB_CHECK_COMPILE([does function 'ktime_before' exist],
356 #include <linux/hrtimer.h>
357 #include <linux/ktime.h>
359 ktime_t start = ktime_set(0, 0);
362 ktime_before(start, end);
364 AC_DEFINE(HAVE_KTIME_BEFORE, 1,
365 [ktime_before is available])
367 ]) # LIBCFS_KTIME_BEFORE
370 # Kernel version 3.12 introduced ktime_compare
372 AC_DEFUN([LIBCFS_KTIME_COMPARE],[
373 LB_CHECK_COMPILE([does function 'ktime_compare' exist],
375 #include <linux/hrtimer.h>
376 #include <linux/ktime.h>
378 ktime_t start = ktime_set(0, 0);
381 ktime_compare(start, end);
383 AC_DEFINE(HAVE_KTIME_COMPARE, 1,
384 [ktime_compare is available])
386 ]) # LIBCFS_KTIME_COMPARE
389 # FC19 3.12 kernel struct shrinker change
391 AC_DEFUN([LIBCFS_SHRINKER_COUNT],[
392 LB_CHECK_COMPILE([shrinker has 'count_objects'],
393 shrinker_count_objects, [
394 #include <linux/mmzone.h>
395 #include <linux/shrinker.h>
397 struct shrinker shrinker;
399 shrinker.count_objects = NULL;
401 AC_DEFINE(HAVE_SHRINKER_COUNT, 1,
402 [shrinker has count_objects member])
404 ]) # LIBCFS_SHRINKER_COUNT
407 # LIBCFS_IOV_ITER_HAS_TYPE
409 # kernel 3.15-rc4 commit 71d8e532b1549a478e6a6a8a44f309d050294d00
410 # start adding the tag to iov_iter
412 AC_DEFUN([LIBCFS_IOV_ITER_HAS_TYPE], [
413 tmp_flags="$EXTRA_KCFLAGS"
414 EXTRA_KCFLAGS="-Werror"
415 LB_CHECK_COMPILE([if iov_iter has member type],
416 iov_iter_has_type_member, [
417 #include <linux/uio.h>
419 struct iov_iter iter = { .type = ITER_KVEC };
422 AC_DEFINE(HAVE_IOV_ITER_HAS_TYPE_MEMBER, 1,
423 [if iov_iter has member type])
425 EXTRA_KCFLAGS="$tmp_flags"
426 ]) # LIBCFS_IOV_ITER_HAS_TYPE
429 # Kernel version 3.17 changed hlist_add_after to
432 AC_DEFUN([LIBCFS_HLIST_ADD_AFTER],[
433 LB_CHECK_COMPILE([does function 'hlist_add_after' exist],
435 #include <linux/list.h>
437 hlist_add_after(NULL, NULL);
439 AC_DEFINE(HAVE_HLIST_ADD_AFTER, 1,
440 [hlist_add_after is available])
442 ]) # LIBCFS_HLIST_ADD_AFTER
445 # Kernel version 3.17 introduced struct timespec64
447 AC_DEFUN([LIBCFS_TIMESPEC64],[
448 LB_CHECK_COMPILE([does 'struct timespec64' exist],
450 #include <linux/time.h>
452 struct timespec64 ts;
457 AC_DEFINE(HAVE_TIMESPEC64, 1,
458 ['struct timespec64' is available])
460 ]) # LIBCFS_TIMESPEC64
463 # Kernel version 3.17 introduced ktime_get_real_ts64
465 AC_DEFUN([LIBCFS_KTIME_GET_REAL_TS64],[
466 LB_CHECK_COMPILE([does function 'ktime_get_real_ts64' exist],
467 ktime_get_real_ts64, [
468 #include <linux/ktime.h>
470 struct timespec64 *ts = NULL;
472 ktime_get_real_ts64(ts);
474 AC_DEFINE(HAVE_KTIME_GET_REAL_TS64, 1,
475 ['ktime_get_real_ts64' is available])
477 ]) # LIBCFS_KTIME_GET_REAL_TS64
480 # Kernel version 3.17 introduced ktime_get_real_seconds
482 AC_DEFUN([LIBCFS_KTIME_GET_REAL_SECONDS],[
483 LB_CHECK_COMPILE([does function 'ktime_get_real_seconds' exist],
484 ktime_get_real_seconds, [
485 #include <linux/hrtimer.h>
486 #include <linux/ktime.h>
490 now = ktime_get_real_seconds();
492 AC_DEFINE(HAVE_KTIME_GET_REAL_SECONDS, 1,
493 ['ktime_get_real_seconds' is available])
495 ]) # LIBCFS_KTIME_GET_REAL_SECONDS
498 # Kernel version 3.17 created ktime_get_ns wrapper
500 AC_DEFUN([LIBCFS_KTIME_GET_NS],[
501 LB_CHECK_COMPILE([does function 'ktime_get_ns' exist],
503 #include <linux/hrtimer.h>
504 #include <linux/ktime.h>
508 nanoseconds = ktime_get_ns();
510 AC_DEFINE(NEED_KTIME_GET_NS, 1,
511 ['ktime_get_ns' is not available])
513 ]) # LIBCFS_KTIME_GET_NS
516 # Kernel version 3.17 created ktime_get_real_ns wrapper
518 AC_DEFUN([LIBCFS_KTIME_GET_REAL_NS],[
519 LB_CHECK_COMPILE([does function 'ktime_get_real_ns' exist],
521 #include <linux/hrtimer.h>
522 #include <linux/ktime.h>
526 nanoseconds = ktime_get_real_ns();
528 AC_DEFINE(NEED_KTIME_GET_REAL_NS, 1,
529 ['ktime_get_real_ns' is not available])
531 ]) # LIBCFS_KTIME_GET_REAL_NS
534 # Kernel version 3.17 introduced ktime_to_timespec64
536 AC_DEFUN([LIBCFS_KTIME_TO_TIMESPEC64],[
537 LB_CHECK_COMPILE([does function 'ktime_to_timespec64' exist],
538 ktime_to_timespec64, [
539 #include <linux/hrtimer.h>
540 #include <linux/ktime.h>
542 ktime_t now = ktime_set(0, 0);
543 struct timespec64 ts;
545 ts = ktime_to_timespec64(now);
547 AC_DEFINE(HAVE_KTIME_TO_TIMESPEC64, 1,
548 ['ktime_to_timespec64' is available])
550 ]) # LIBCFS_KTIME_TO_TIMESPEC64
553 # Kernel version 3.17 introduced timespec64_sub
555 AC_DEFUN([LIBCFS_TIMESPEC64_SUB],[
556 LB_CHECK_COMPILE([does function 'timespec64_sub' exist],
558 #include <linux/time.h>
560 struct timespec64 later = { }, earlier = { }, diff;
562 diff = timespec64_sub(later, earlier);
564 AC_DEFINE(HAVE_TIMESPEC64_SUB, 1,
565 ['timespec64_sub' is available])
567 ]) # LIBCFS_TIMESPEC64_SUB
570 # Kernel version 3.17 introduced timespec64_to_ktime
572 AC_DEFUN([LIBCFS_TIMESPEC64_TO_KTIME],[
573 LB_CHECK_COMPILE([does function 'timespec64_to_ktime' exist],
574 timespec64_to_ktime, [
575 #include <linux/ktime.h>
577 struct timespec64 ts;
580 now = timespec64_to_ktime(ts);
582 AC_DEFINE(HAVE_TIMESPEC64_TO_KTIME, 1,
583 ['timespec64_to_ktime' is available])
585 ]) # LIBCFS_TIMESPEC64_TO_KTIME
588 # Kernel version 3.19 introduced ktime_get_seconds
590 AC_DEFUN([LIBCFS_KTIME_GET_SECONDS],[
591 LB_CHECK_COMPILE([does function 'ktime_get_seconds' exist],
593 #include <linux/ktime.h>
597 now = ktime_get_seconds();
599 AC_DEFINE(HAVE_KTIME_GET_SECONDS, 1,
600 ['ktime_get_seconds' is available])
602 ]) # LIBCFS_KTIME_GET_SECONDS
605 # Kernel version 4.0 commit 41fbf3b39d5eca01527338b4d0ee15ee1ae1023c
606 # introduced the helper function ktime_ms_delta.
608 AC_DEFUN([LIBCFS_KTIME_MS_DELTA],[
609 LB_CHECK_COMPILE([does function 'ktime_ms_delta' exist],
611 #include <linux/ktime.h>
613 ktime_t start = ktime_set(0, 0);
616 ktime_ms_delta(start, end);
618 AC_DEFINE(HAVE_KTIME_MS_DELTA, 1,
619 ['ktime_ms_delta' is available])
621 ]) # LIBCFS_KTIME_MS_DELTA
624 # Kernel version 4.1 commit b51d23e4e9fea6f264d39535c2a62d1f51e7ccc3
625 # create per module locks which added kernel_param_[un]lock(). Older
626 # kernels you have to use __kernel_param_[un]lock(). In that case its
627 # a global lock for all modules but that is okay since its a rare event.
629 AC_DEFUN([LIBCFS_KERNEL_PARAM_LOCK],[
630 LB_CHECK_COMPILE([does function 'kernel_param_[un]lock' exist],
632 #include <linux/moduleparam.h>
634 kernel_param_lock(NULL);
635 kernel_param_unlock(NULL);
637 AC_DEFINE(HAVE_KERNEL_PARAM_LOCK, 1,
638 ['kernel_param_[un]lock' is available])
640 ]) # LIBCFS_KERNEL_PARAM_LOCK
643 # Kernel version 4.2 changed topology_thread_cpumask
644 # to topology_sibling_cpumask
646 AC_DEFUN([LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK],[
647 LB_CHECK_COMPILE([does function 'topology_sibling_cpumask' exist],
648 topology_sibling_cpumask, [
649 #include <linux/topology.h>
651 const struct cpumask *mask;
653 mask = topology_sibling_cpumask(0);
655 AC_DEFINE(HAVE_TOPOLOGY_SIBLING_CPUMASK, 1,
656 [topology_sibling_cpumask is available])
658 ]) # LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
661 # Kernel version 4.2 commit df6b35f409af0a8ff1ef62f552b8402f3fef8665
662 # header file i387.h was renamed to fpu/api.h
664 AC_DEFUN([LIBCFS_FPU_API], [
665 LB_CHECK_LINUX_HEADER([asm/fpu/api.h], [
666 AC_DEFINE(HAVE_FPU_API_HEADER, 1,
667 [fpu/api.h is present])])
671 # Kernel version 4.4 commit ef951599074ba4fad2d0efa0a977129b41e6d203
672 # introduced kstrtobool and kstrtobool_from_user.
674 AC_DEFUN([LIBCFS_KSTRTOBOOL_FROM_USER], [
675 LB_CHECK_COMPILE([if Linux kernel has 'kstrtobool_from_user'],
676 kstrtobool_from_user, [
677 #include <linux/kernel.h>
680 return kstrtobool_from_user(NULL, 0, &result);
682 AC_DEFINE(HAVE_KSTRTOBOOL_FROM_USER, 1,
683 [kernel has kstrtobool_from_user])
685 ]) # LIBCFS_KSTRTOBOOL_FROM_USER
688 # Kernel version 4.5-rc1 commit d12481bc58fba89427565f8592e88446ec084a24
689 # added crypto hash helpers
691 AC_DEFUN([LIBCFS_CRYPTO_HASH_HELPERS], [
692 LB_CHECK_COMPILE([does crypto hash helper functions exist],
693 crypto_hash_helpers, [
694 #include <crypto/hash.h>
696 crypto_ahash_alg_name(NULL);
697 crypto_ahash_driver_name(NULL);
699 AC_DEFINE(HAVE_CRYPTO_HASH_HELPERS, 1,
700 [crypto hash helper functions are available])
702 ]) # LIBCFS_CRYPTO_HASH_HELPERS
705 # Kernel version 4.5-rc1 commit 3502cad73c4bbf8f6365d539e814159275252c59
706 # introduced rhashtable_replace_fast
708 AC_DEFUN([LIBCFS_RHASHTABLE_REPLACE], [
709 LB_CHECK_COMPILE([if 'rhashtable_replace_fast' exists],
710 rhashtable_replace_fast, [
711 #include <linux/rhashtable.h>
713 const struct rhashtable_params params = { 0 };
715 rhashtable_replace_fast(NULL, NULL, NULL, params);
717 AC_DEFINE(HAVE_RHASHTABLE_REPLACE, 1,
718 [rhashtable_replace_fast() is available])
720 ]) # LIBCFS_RHASHTABLE_REPLACE
723 # Kernel version 4.5-rc3 commit 2fe829aca9d7bed5fd6b49c6a1452e5e486b6cc3dd
724 # made kset_find_obj() exportable to modules
726 AC_DEFUN([LIBCFS_EXPORT_KSET_FIND_OBJ], [
727 LB_CHECK_EXPORT([kset_find_obj], [lib/kobject.c],
728 [AC_DEFINE(HAVE_KSET_FIND_OBJ, 1,
729 [kset_find_obj is exported by the kernel])])
730 ]) # LIBCFS_EXPORT_KSET_FIND_OBJ
733 # Kernel version 4.6+ commit ef703f49a6c5b909a85149bb6625c4ed0d697186
734 # fixed the brokenness of hash_64(). The fix removed GOLDEN_RATIO_PRIME_64
735 # since it was a poor prime value.
737 AC_DEFUN([LIBCFS_BROKEN_HASH_64], [
738 LB_CHECK_COMPILE([kernel has fixed hash_64()],
740 #include <linux/hash.h>
742 int tmp = GOLDEN_RATIO_PRIME_64;
744 AC_DEFINE(HAVE_BROKEN_HASH_64, 1, [kernel hash_64() is broken])
746 ]) # LIBCFS_BROKEN_HASH_64
749 # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
751 # linux 4.6 kernel changed stacktrace_ops address to return an int
753 AC_DEFUN([LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT], [
754 LB_CHECK_COMPILE([if 'struct stacktrace_ops' address function returns an int],
755 stacktrace_ops_address_return_int, [
756 #include <asm/stacktrace.h>
760 rc = ((struct stacktrace_ops *)0)->address(NULL, 0, 0);
762 AC_DEFINE(STACKTRACE_OPS_ADDRESS_RETURN_INT, 1,
763 ['struct stacktrace_ops' address function returns an int])
765 ]) # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
768 # Kernel version 4.6 removed both struct task_struct and struct mm_struct
769 # arguments to get_user_pages
771 AC_DEFUN([LIBCFS_GET_USER_PAGES_6ARG], [
772 LB_CHECK_COMPILE([if 'get_user_pages()' takes 6 arguments],
773 get_user_pages_6arg, [
774 #include <linux/mm.h>
778 rc = get_user_pages(0, 0, 0, 0, NULL, NULL);
780 AC_DEFINE(HAVE_GET_USER_PAGES_6ARG, 1,
781 [get_user_pages takes 6 arguments])
783 ]) # LIBCFS_GET_USER_PAGES_6ARG
788 # 4.6 kernel created stringhash.h which moved stuff out of dcache.h
789 # commit f4bcbe792b8f434e32487cff9d9e30ab45a3ce02
791 AC_DEFUN([LIBCFS_STRINGHASH], [
792 LB_CHECK_LINUX_HEADER([linux/stringhash.h], [
793 AC_DEFINE(HAVE_STRINGHASH, 1,
794 [stringhash.h is present])])
795 ]) # LIBCFS_STRINGHASH
798 # LIBCFS_RHASHTABLE_INSERT_FAST
800 # 4.7+ kernel commit 5ca8cc5bf11faed257c762018aea9106d529232f
801 # changed __rhashtable_insert_fast to support the new function
802 # rhashtable_lookup_get_insert_key().
804 AC_DEFUN([LIBCFS_RHASHTABLE_INSERT_FAST], [
805 tmp_flags="$EXTRA_KCFLAGS"
806 EXTRA_KCFLAGS="-Werror"
807 LB_CHECK_COMPILE([if internal '__rhashtable_insert_fast()' returns int],
808 rhashtable_insert_fast, [
809 #include <linux/rhashtable.h>
811 const struct rhashtable_params params = { 0 };
814 rc = __rhashtable_insert_fast(NULL, NULL, NULL, params);
816 AC_DEFINE(HAVE_HASHTABLE_INSERT_FAST_RETURN_INT, 1,
817 ['__rhashtable_insert_fast()' returns int])
819 EXTRA_KCFLAGS="$tmp_flags"
820 ]) # LIBCFS_RHASHTABLE_INSERT_FAST
823 # Kernel version 4.7-rc1 commit 8f6fd83c6c5ec66a4a70c728535ddcdfef4f3697
824 # added 3rd arg to rhashtable_walk_init
826 AC_DEFUN([LIBCFS_RHASHTABLE_WALK_INIT_3ARG], [
827 LB_CHECK_COMPILE([if 'rhashtable_walk_init' has 3 args],
828 rhashtable_walk_init, [
829 #include <linux/gfp.h>
830 #include <linux/rhashtable.h>
832 rhashtable_walk_init(NULL, NULL, GFP_KERNEL);
834 AC_DEFINE(HAVE_3ARG_RHASHTABLE_WALK_INIT, 1,
835 [rhashtable_walk_init() has 3 args])
837 ]) # LIBCFS_RHASHTABLE_REPLACE
840 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
841 # introduced rhashtable_lookup
843 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP], [
844 LB_CHECK_COMPILE([if 'rhashtable_lookup' exist],
846 #include <linux/rhashtable.h>
848 const struct rhashtable_params params = { 0 };
851 ret = rhashtable_lookup(NULL, NULL, params);
853 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP, 1,
854 [rhashtable_lookup() is available])
856 ]) # LIBCFS_RHASHTABLE_LOOKUP
860 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
861 # created the rhlist interface to allow inserting duplicate objects
862 # into the same table.
864 AC_DEFUN([LIBCFS_RHLTABLE], [
865 LB_CHECK_COMPILE([does 'struct rhltable' exist],
867 #include <linux/rhashtable.h>
869 struct rhltable *hlt;
871 rhltable_destroy(hlt);
873 AC_DEFINE(HAVE_RHLTABLE, 1,
874 [struct rhltable exist])
879 # LIBCFS_STACKTRACE_OPS
881 # Kernel version 4.8 commit c8fe4609827aedc9c4b45de80e7cdc8ccfa8541b
882 # removed both struct stacktrace_ops and dump_trace() function
884 AC_DEFUN([LIBCFS_STACKTRACE_OPS], [
885 LB_CHECK_COMPILE([if 'struct stacktrace_ops' exists],
889 #include <asm/stacktrace.h>
891 struct stacktrace_ops ops;
894 AC_DEFINE(HAVE_STACKTRACE_OPS, 1,
895 [struct stacktrace_ops exists])
897 ]) # LIBCFS_STACKTRACE_OPS
900 # Kernel version 4.9-rc1 commit 246779dd090bd1b74d2652b3a6ca7759f593b27a
901 # introduced rhashtable_walk_enter
903 AC_DEFUN([LIBCFS_RHASHTABLE_WALK_ENTER], [
904 LB_CHECK_COMPILE([if 'rhashtable_walk_enter' exists],
905 rhashtable_walk_enter, [
906 #include <linux/rhashtable.h>
908 rhashtable_walk_enter(NULL, NULL);
910 AC_DEFINE(HAVE_RHASHTABLE_WALK_ENTER, 1,
911 [rhashtable_walk_enter() is available])
913 ]) # LIBCFS_RHASHTABLE_REPLACE
916 # Kernel version 4.9 commit 768ae309a96103ed02eb1e111e838c87854d8b51
917 # mm: replace get_user_pages() write/force parameters with gup_flags
919 AC_DEFUN([LIBCFS_GET_USER_PAGES_GUP_FLAGS], [
920 LB_CHECK_COMPILE([if 'get_user_pages()' takes gup_flags in arguments],
921 get_user_pages_gup_flags, [
922 #include <linux/mm.h>
925 rc = get_user_pages(0, 0, FOLL_WRITE, NULL, NULL);
927 AC_DEFINE(HAVE_GET_USER_PAGES_GUP_FLAGS, 1,
928 [get_user_pages takes gup_flags in arguments])
930 ]) # LIBCFS_GET_USER_PAGES_GUP_FLAGS
933 # Kernel version 4.10 commit 7b737965b33188bd3dbb44e938535c4006d97fbb
934 # libcfs: Convert to hotplug state machine
936 AC_DEFUN([LIBCFS_HOTPLUG_STATE_MACHINE], [
937 LB_CHECK_COMPILE([if libcfs supports CPU hotplug state machine],
938 cpu_hotplug_state_machine, [
939 #include <linux/cpuhotplug.h>
941 cpuhp_remove_state(CPUHP_LUSTRE_CFS_DEAD);
943 AC_DEFINE(HAVE_HOTPLUG_STATE_MACHINE, 1,
944 [hotplug state machine is supported])
946 ]) # LIBCFS_HOTPLUG_STATE_MACHINE
949 # LIBCFS_SCHED_HEADERS
951 # 4.11 has broken up sched.h into more headers.
953 AC_DEFUN([LIBCFS_SCHED_HEADERS], [
954 LB_CHECK_LINUX_HEADER([linux/sched/signal.h], [
955 AC_DEFINE(HAVE_SCHED_HEADERS, 1,
956 [linux/sched header directory exist])])
957 ]) # LIBCFS_SCHED_HEADERS
960 # Kernel version 4.11-rc1 commit da20420f83ea0fbcf3d03afda08d971ea1d8a356
961 # introduced rht_bucket_var
963 AC_DEFUN([LIBCFS_RHT_BUCKET_VAR], [
964 LB_CHECK_COMPILE([if 'rht_bucket_var' exists],
966 #include <linux/rhashtable.h>
969 rht_bucket_var(NULL, 0);
971 AC_DEFINE(HAVE_RHT_BUCKET_VAR, 1,
972 [rht_bucket_var() is available])
974 ]) # LIBCFS_RHT_BUCKET_VAR
977 # Kernel version 4.11 commit f9fe1c12d126f9887441fa5bb165046f30ddd4b5
978 # introduced rhashtable_lookup_get_insert_fast
980 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST], [
981 LB_CHECK_COMPILE([if 'rhashtable_lookup_get_insert_fast' exist],
982 rhashtable_lookup_get_insert_fast, [
983 #include <linux/rhashtable.h>
985 const struct rhashtable_params params = { 0 };
988 ret = rhashtable_lookup_get_insert_fast(NULL, NULL, params);
990 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP_GET_INSERT_FAST, 1,
991 [rhashtable_lookup_get_insert_fast() is available])
993 ]) # LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
996 # Kernel version 4.12-rc3 f9727a17db9bab71ddae91f74f11a8a2f9a0ece6
997 # renamed uuid_be to uuid_t
999 AC_DEFUN([LIBCFS_UUID_T], [
1000 LB_CHECK_COMPILE([if 'uuid_t' exist],
1002 #include <linux/uuid.h>
1006 memset(uuid.b, 0, 16);
1008 AC_DEFINE(HAVE_UUID_T, 1, ['uuid_t' exist])
1013 # Kernel version 4.12-rc3 commit fd851a3cdc196bfc1d229b5f22369069af532bf8
1014 # introduce processor.h
1016 AC_DEFUN([LIBCFS_HAVE_PROCESSOR_HEADER], [
1017 LB_CHECK_LINUX_HEADER([linux/processor.h], [
1018 AC_DEFINE(HAVE_PROCESSOR_H, 1,
1019 [processor.h is present])])
1020 ]) # LIBCFS_HAVE_PROCESSOR_HEADER
1023 # Kernel verison 4.12-rc6 commit 5dd43ce2f69d42a71dcacdb13d17d8c0ac1fe8f7
1024 # created wait_bit.h
1026 AC_DEFUN([LIBCFS_HAVE_WAIT_BIT_HEADER], [
1027 LB_CHECK_LINUX_HEADER([linux/wait_bit.h], [
1028 AC_DEFINE(HAVE_WAIT_BIT_HEADER_H, 1,
1029 [wait_bit.h is present])])
1030 ]) # LIBCFS_HAVE_WAIT_BIT_HEADER
1033 # Kernel version 4.12-rc6 commmit 2055da97389a605c8a00d163d40903afbe413921
1035 # struct wait_queue_head::task_list => ::head
1036 # struct wait_queue_entry::task_list => ::entry
1038 AC_DEFUN([LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME], [
1039 LB_CHECK_COMPILE([if linux wait_queue_head list_head is named head],
1040 wait_queue_task_list, [
1041 #include <linux/wait.h>
1043 wait_queue_head_t e;
1045 INIT_LIST_HEAD(&e.head);
1047 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY_LIST, 1,
1048 [linux wait_queue_head_t list_head is name head])
1050 ]) # LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
1053 # LIBCFS_WAIT_QUEUE_ENTRY
1055 # Kernel version 4.13 ac6424b981bce1c4bc55675c6ce11bfe1bbfa64f
1056 # Rename wait_queue_t => wait_queue_entry_t
1058 AC_DEFUN([LIBCFS_WAIT_QUEUE_ENTRY], [
1059 LB_CHECK_COMPILE([if 'wait_queue_entry_t' exists],
1061 #include <linux/wait.h>
1063 wait_queue_entry_t e;
1067 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY, 1,
1068 ['wait_queue_entry_t' is available])
1070 ]) # LIBCFS_WAIT_QUEUE_ENTRY
1073 # LIBCFS_NEW_KERNEL_WRITE
1075 # Kernel version 4.14 e13ec939e96b13e664bb6cee361cc976a0ee621a
1076 # changed kernel_write prototype to make is plug compatible
1077 # with the unexported vfs_write()
1079 AC_DEFUN([LIBCFS_NEW_KERNEL_WRITE], [
1080 tmp_flags="$EXTRA_KCFLAGS"
1081 EXTRA_KCFLAGS="-Werror"
1082 LB_CHECK_COMPILE([if 'kernel_write' matches other read/write helpers],
1083 kernel_write_match, [
1084 #include <linux/fs.h>
1086 const void *buf = NULL;
1088 return kernel_write(NULL, buf, 0, &pos);
1090 AC_DEFINE(HAVE_NEW_KERNEL_WRITE, 1,
1091 ['kernel_write' aligns with read/write helpers])
1093 EXTRA_KCFLAGS="$tmp_flags"
1094 ]) # LIBCFS_NEW_KERNEL_WRITE
1097 # LIBCFS_MM_TOTALRAM_PAGES_FUNC
1099 # kernel 5.0 commit ca79b0c211af63fa3276f0e3fd7dd9ada2439839
1100 # mm: convert totalram_pages and totalhigh_pages variables to atomic
1102 AC_DEFUN([LIBCFS_MM_TOTALRAM_PAGES_FUNC], [
1103 tmp_flags="$EXTRA_KCFLAGS"
1104 EXTRA_KCFLAGS="-Werror"
1105 LB_CHECK_COMPILE([if totalram_pages is a function],
1107 #include <linux/mm.h>
1109 totalram_pages_inc();
1111 AC_DEFINE(HAVE_TOTALRAM_PAGES_AS_FUNC, 1,
1112 [if totalram_pages is a function])
1114 EXTRA_KCFLAGS="$tmp_flags"
1115 ]) # LIBCFS_MM_TOTALRAM_PAGES_FUNC
1118 # LIBCFS_NEW_KERNEL_WRITE
1120 # 4.14 commit bdd1d2d3d251c65b74ac4493e08db18971c09240 changed
1121 # the signature of kernel_read to match other read/write helpers
1122 # and place offset last.
1124 AC_DEFUN([LIBCFS_NEW_KERNEL_READ], [
1125 tmp_flags="$EXTRA_KCFLAGS"
1126 EXTRA_KCFLAGS="-Werror"
1127 LB_CHECK_COMPILE([if 'kernel_read()' has loff_t *pos as last parameter],
1129 #include <linux/fs.h>
1132 kernel_read(NULL, NULL, 0, &pos);
1134 AC_DEFINE(HAVE_KERNEL_READ_LAST_POSP, 1,
1135 [kernel_read() signature ends with loff_t *pos])
1137 EXTRA_KCFLAGS="$tmp_flags"
1138 ]) # LIBCFS_NEW_KERNEL_READ
1141 # LIBCFS_DEFINE_TIMER
1143 # Kernel version 4.14 commit 1d27e3e2252ba9d949ca82fbdb73cde102cb2067
1144 # remove expires and data arguments from DEFINE_TIMER. Also the callback
1145 # when from using unsigned long argument to using struct timer_list pointer.
1147 AC_DEFUN([LIBCFS_DEFINE_TIMER], [
1148 LB_CHECK_COMPILE([if DEFINE_TIMER takes only 2 arguments],
1150 #include <linux/timer.h>
1152 static DEFINE_TIMER(my_timer, NULL);
1154 AC_DEFINE(HAVE_NEW_DEFINE_TIMER, 1,
1155 [DEFINE_TIMER uses only 2 arguements])
1157 ]) # LIBCFS_DEFINE_TIMER
1160 # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1162 # Kernel 2.6.27 commit 8594698ebddeef5443b7da8258ae33b3eaca61d5
1163 # exported save_stack_trace_tsk for x86.
1164 # Kernel 2.6.27 commit 01f4b8b8b8db09b88be7df7e51192e4e678b69d3
1165 # exported save_stack_trace_tsk for powerpc
1166 # Kernel 4.13 commit e27c7fa015d61c8be6a2c32b2144aad2ae6ec975
1167 # exported save_stack_trace_tsk for arm64
1168 # Kernel 4.14 commit 9a3dc3186fc3795e076a4122da9e0258651a9631
1169 # exported save_stack_trace_tsk for arm
1171 AC_DEFUN([LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK], [
1172 LB_CHECK_EXPORT([save_stack_trace_tsk], [arch/$SUBARCH/kernel/stacktrace.c],
1173 [AC_DEFINE(HAVE_SAVE_STACK_TRACE_TSK, 1,
1174 [save_stack_trace_tsk is exported])])
1175 ]) # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1178 # LIBCFS_TIMER_SETUP
1180 # Kernel version 4.15 commit e99e88a9d2b067465adaa9c111ada99a041bef9a
1181 # setup_timer() was replaced by timer_setup(), where the callback
1182 # argument is the structure already holding the struct timer_list.
1184 AC_DEFUN([LIBCFS_TIMER_SETUP], [
1185 LB_CHECK_COMPILE([if setup_timer has been replaced with timer_setup],
1187 #include <linux/timer.h>
1189 timer_setup(NULL, NULL, 0);
1191 AC_DEFINE(HAVE_TIMER_SETUP, 1,
1192 [timer_setup has replaced setup_timer])
1194 ]) # LIBCFS_TIMER_SETUP
1197 # LIBCFS_WAIT_VAR_EVENT
1199 # Kernel version 4.16-rc4 commit 6b2bb7265f0b62605e8caee3613449ed0db270b9
1200 # added wait_var_event()
1202 AC_DEFUN([LIBCFS_WAIT_VAR_EVENT], [
1203 LB_CHECK_COMPILE([if 'wait_var_event' exist],
1205 #ifdef HAVE_WAIT_BIT_HEADER_H
1206 #include <linux/wait_bit.h>
1208 #include <linux/wait.h>
1212 AC_DEFINE(HAVE_WAIT_VAR_EVENT, 1,
1213 ['wait_var_event' is available])
1215 ]) # LIBCFS_WAIT_VAR_EVENT
1218 # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1220 # Kernel version 4.17-rc2 commit 8236b0ae31c837d2b3a2565c5f8d77f637e824cc
1221 # added clear_and_wake_up_bit()
1223 AC_DEFUN([LIBCFS_CLEAR_AND_WAKE_UP_BIT], [
1224 LB_CHECK_COMPILE([if 'clear_and_wake_up_bit' exist],
1225 clear_and_wake_up_bit, [
1226 #ifdef HAVE_WAIT_BIT_HEADER_H
1227 #include <linux/wait_bit.h>
1229 #include <linux/wait.h>
1231 clear_and_wake_up_bit(0, NULL);
1233 AC_DEFINE(HAVE_CLEAR_AND_WAKE_UP_BIT, 1,
1234 ['clear_and_wake_up_bit' is available])
1236 ]) # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1239 # LIBCFS_HAVE_IOV_ITER_TYPE
1241 # kernel 4.20 commit 00e23707442a75b404392cef1405ab4fd498de6b
1242 # iov_iter: Use accessor functions to access an iterator's type and direction.
1244 AC_DEFUN([LIBCFS_HAVE_IOV_ITER_TYPE], [
1245 tmp_flags="$EXTRA_KCFLAGS"
1246 EXTRA_KCFLAGS="-Werror"
1247 LB_CHECK_COMPILE([if iov_iter_type exists],
1248 macro_iov_iter_type_exists, [
1249 #include <linux/uio.h>
1251 struct iov_iter iter = { .type = ITER_KVEC };
1252 enum iter_type type = iov_iter_type(&iter);
1255 AC_DEFINE(HAVE_IOV_ITER_TYPE, 1,
1256 [if iov_iter_type exists])
1258 EXTRA_KCFLAGS="$tmp_flags"
1259 ]) # LIBCFS_HAVE_IOV_ITER_TYPE
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_ENABLE_CRC32_ACCEL
1293 LIBCFS_ENABLE_CRC32C_ACCEL
1295 LIBCFS_KTIME_GET_TS64
1297 LIBCFS_PREPARE_TO_WAIT_EVENT
1298 LIBCFS_KERNEL_PARAM_OPS
1302 LIBCFS_KTIME_COMPARE
1303 LIBCFS_SHRINKER_COUNT
1305 LIBCFS_IOV_ITER_HAS_TYPE
1307 LIBCFS_HLIST_ADD_AFTER
1310 LIBCFS_KTIME_GET_REAL_TS64
1311 LIBCFS_KTIME_GET_REAL_SECONDS
1312 LIBCFS_KTIME_GET_REAL_NS
1313 LIBCFS_KTIME_TO_TIMESPEC64
1314 LIBCFS_TIMESPEC64_SUB
1315 LIBCFS_TIMESPEC64_TO_KTIME
1317 LIBCFS_KTIME_GET_SECONDS
1319 LIBCFS_KTIME_MS_DELTA
1321 LIBCFS_KERNEL_PARAM_LOCK
1323 LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
1326 LIBCFS_KSTRTOBOOL_FROM_USER
1328 LIBCFS_CRYPTO_HASH_HELPERS
1329 LIBCFS_EXPORT_KSET_FIND_OBJ
1330 LIBCFS_RHASHTABLE_REPLACE
1332 LIBCFS_BROKEN_HASH_64
1333 LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
1334 LIBCFS_GET_USER_PAGES_6ARG
1337 LIBCFS_RHASHTABLE_INSERT_FAST
1338 LIBCFS_RHASHTABLE_WALK_INIT_3ARG
1340 LIBCFS_RHASHTABLE_LOOKUP
1342 LIBCFS_STACKTRACE_OPS
1344 LIBCFS_GET_USER_PAGES_GUP_FLAGS
1345 LIBCFS_RHASHTABLE_WALK_ENTER
1347 LIBCFS_HOTPLUG_STATE_MACHINE
1349 LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
1350 LIBCFS_SCHED_HEADERS
1351 LIBCFS_RHT_BUCKET_VAR
1353 LIBCFS_HAVE_PROCESSOR_HEADER
1354 LIBCFS_HAVE_WAIT_BIT_HEADER
1355 LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
1358 LIBCFS_WAIT_QUEUE_ENTRY
1361 LIBCFS_NEW_KERNEL_WRITE
1362 LIBCFS_NEW_KERNEL_READ
1363 LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1367 LIBCFS_WAIT_VAR_EVENT
1369 LIBCFS_CLEAR_AND_WAKE_UP_BIT
1371 LIBCFS_HAVE_IOV_ITER_TYPE
1373 LIBCFS_MM_TOTALRAM_PAGES_FUNC
1374 ]) # LIBCFS_PROG_LINUX
1377 # LIBCFS_PATH_DEFAULTS
1379 # default paths for installed files
1381 AC_DEFUN([LIBCFS_PATH_DEFAULTS], [
1382 ]) # LIBCFS_PATH_DEFAULTS
1387 # other configure checks
1389 AC_DEFUN([LIBCFS_CONFIGURE], [
1390 AC_MSG_NOTICE([LibCFS core checks
1391 ==============================================================================])
1393 # libcfs/libcfs/util/nidstrings.c
1394 AC_CHECK_HEADERS([netdb.h asm/types.h endian.h])
1395 AC_CHECK_FUNCS([gethostbyname])
1397 # -------- Check for required packages --------------
1399 AC_MSG_NOTICE([LibCFS required packages checks
1400 ==============================================================================])
1402 AC_MSG_CHECKING([whether to enable readline support])
1403 AC_ARG_ENABLE(readline,
1404 AC_HELP_STRING([--disable-readline],
1405 [disable readline support]),
1406 [], [enable_readline="yes"])
1407 AC_MSG_RESULT([$enable_readline])
1410 AS_IF([test "x$enable_readline" = xyes], [
1411 AC_CHECK_LIB([readline], [readline], [
1412 LIBREADLINE="-lreadline"
1413 AC_DEFINE(HAVE_LIBREADLINE, 1,
1414 [readline library is available])
1417 AC_SUBST(LIBREADLINE)
1419 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
1420 AC_ARG_ENABLE([libpthread],
1421 AC_HELP_STRING([--disable-libpthread],
1422 [disable libpthread]),
1423 [], [enable_libpthread="yes"])
1424 AC_MSG_RESULT([$enable_libpthread])
1427 AS_IF([test "x$enable_libpthread" = xyes], [
1428 AC_CHECK_LIB([pthread], [pthread_create], [
1429 PTHREAD_LIBS="-lpthread"
1430 AC_DEFINE([HAVE_LIBPTHREAD], 1,
1431 [use libpthread for libcfs library])
1434 AC_MSG_WARN([Using libpthread for libcfs library is disabled explicitly])
1436 AC_SUBST(PTHREAD_LIBS)
1437 ]) # LIBCFS_CONFIGURE
1440 # LIBCFS_CONDITIONALS
1442 AC_DEFUN([LIBCFS_CONDITIONALS], [
1443 AM_CONDITIONAL(HAVE_CRC32, [test "x$have_crc32" = xyes])
1444 AM_CONDITIONAL(NEED_PCLMULQDQ_CRC32, [test "x$have_crc32" = xyes -a "x$enable_crc32_crypto" = xyes])
1445 AM_CONDITIONAL(NEED_PCLMULQDQ_CRC32C, [test "x$enable_crc32c_crypto" = xyes])
1446 ]) # LIBCFS_CONDITIONALS
1449 # LIBCFS_CONFIG_FILES
1451 # files that should be generated with AC_OUTPUT
1453 AC_DEFUN([LIBCFS_CONFIG_FILES], [
1457 libcfs/autoconf/Makefile
1458 libcfs/include/Makefile
1459 libcfs/include/libcfs/Makefile
1460 libcfs/include/libcfs/linux/Makefile
1461 libcfs/include/libcfs/util/Makefile
1462 libcfs/libcfs/Makefile
1463 libcfs/libcfs/autoMakefile
1464 libcfs/libcfs/linux/Makefile
1465 libcfs/libcfs/util/Makefile
1467 ]) # LIBCFS_CONFIG_FILES