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 # Kernel version 3.11 introduced ktime_get_ts64
54 AC_DEFUN([LIBCFS_KTIME_GET_TS64],[
55 LB_CHECK_COMPILE([does function 'ktime_get_ts64' exist],
57 #include <linux/hrtimer.h>
58 #include <linux/ktime.h>
60 struct timespec64 *ts = NULL;
64 AC_DEFINE(HAVE_KTIME_GET_TS64, 1,
65 ['ktime_get_ts64' is available])
67 ]) # LIBCFS_KTIME_GET_TS64
70 # Kernel version 3.12-rc4 commit c2d816443ef30 added prepare_to_wait_event()
72 AC_DEFUN([LIBCFS_PREPARE_TO_WAIT_EVENT],[
73 LB_CHECK_COMPILE([does function 'prepare_to_wait_event' exist],
74 prepare_to_wait_event, [
75 #include <linux/wait.h>
77 prepare_to_wait_event(NULL, NULL, 0);
79 AC_DEFINE(HAVE_PREPARE_TO_WAIT_EVENT, 1,
80 ['prepare_to_wait_event' is available])
82 ]) # LIBCFS_PREPARE_TO_WAIT_EVENT
85 # Linux kernel 3.12 introduced struct kernel_param_ops
86 # This has been backported to all lustre supported
87 # clients except RHEL6. We have to handle the differences.
89 AC_DEFUN([LIBCFS_KERNEL_PARAM_OPS],[
90 LB_CHECK_COMPILE([does 'struct kernel_param_ops' exist],
92 #include <linux/module.h>
94 struct kernel_param_ops ops;
98 AC_DEFINE(HAVE_KERNEL_PARAM_OPS, 1,
99 ['struct kernel_param_ops' is available])
101 ]) # LIBCFS_KERNEL_PARAM_OPS
104 # Kernel version 3.12 introduced ktime_add
106 AC_DEFUN([LIBCFS_KTIME_ADD],[
107 LB_CHECK_COMPILE([does function 'ktime_add' exist],
109 #include <linux/hrtimer.h>
110 #include <linux/ktime.h>
112 ktime_t start = ktime_set(0, 0);
116 total = ktime_add(start, end);
118 AC_DEFINE(HAVE_KTIME_ADD, 1,
119 [ktime_add is available])
121 ]) # LIBCFS_KTIME_ADD
124 # Kernel version 3.12 introduced ktime_after
126 AC_DEFUN([LIBCFS_KTIME_AFTER],[
127 LB_CHECK_COMPILE([does function 'ktime_after' exist],
129 #include <linux/hrtimer.h>
130 #include <linux/ktime.h>
132 ktime_t start = ktime_set(0, 0);
135 ktime_after(start, end);
137 AC_DEFINE(HAVE_KTIME_AFTER, 1,
138 [ktime_after is available])
140 ]) # LIBCFS_KTIME_AFTER
143 # Kernel version 3.12 introduced ktime_before
144 # See linux commit 67cb9366ff5f99868100198efba5ca88aaa6ad25
146 AC_DEFUN([LIBCFS_KTIME_BEFORE],[
147 LB_CHECK_COMPILE([does function 'ktime_before' exist],
149 #include <linux/hrtimer.h>
150 #include <linux/ktime.h>
152 ktime_t start = ktime_set(0, 0);
155 ktime_before(start, end);
157 AC_DEFINE(HAVE_KTIME_BEFORE, 1,
158 [ktime_before is available])
160 ]) # LIBCFS_KTIME_BEFORE
163 # Kernel version 3.12 introduced ktime_compare
165 AC_DEFUN([LIBCFS_KTIME_COMPARE],[
166 LB_CHECK_COMPILE([does function 'ktime_compare' exist],
168 #include <linux/hrtimer.h>
169 #include <linux/ktime.h>
171 ktime_t start = ktime_set(0, 0);
174 ktime_compare(start, end);
176 AC_DEFINE(HAVE_KTIME_COMPARE, 1,
177 [ktime_compare is available])
179 ]) # LIBCFS_KTIME_COMPARE
182 # FC19 3.12 kernel struct shrinker change
184 AC_DEFUN([LIBCFS_SHRINKER_COUNT],[
185 LB_CHECK_COMPILE([shrinker has 'count_objects'],
186 shrinker_count_objects, [
187 #include <linux/mmzone.h>
188 #include <linux/shrinker.h>
190 struct shrinker shrinker;
192 shrinker.count_objects = NULL;
194 AC_DEFINE(HAVE_SHRINKER_COUNT, 1,
195 [shrinker has count_objects member])
197 ]) # LIBCFS_SHRINKER_COUNT
200 # Kernel version 3.13 commit aace05097a0fd467230e39acb148be0fdaa90068
201 # add match_wildcard() function.
203 AC_DEFUN([LIBCFS_MATCH_WILDCARD],[
204 LB_CHECK_COMPILE([does function 'match_wildcard' exist],
206 #include <linux/parser.h>
210 match = match_wildcard(NULL, NULL);
212 AC_DEFINE(HAVE_MATCH_WILDCARD, 1,
213 [match_wildcard() is available])
215 ]) # LIBCFS_MATCH_WILDCARD
218 # LIBCFS_HAVE_MAPPING_AS_EXITING_FLAG
220 # v3.14-7405-g91b0abe36a7b added AS_EXITING flag with
221 # mapping_exiting() and mapping_set_exiting()
223 AC_DEFUN([LIBCFS_HAVE_MAPPING_AS_EXITING_FLAG], [
224 m4_pattern_allow([AS_EXITING])
225 tmp_flags="$EXTRA_KCFLAGS"
226 EXTRA_KCFLAGS="-Werror"
227 LB_CHECK_COMPILE([if enum mapping_flags has AS_EXITING flag],
228 mapping_exiting_exists, [
229 #include <linux/pagemap.h>
231 enum mapping_flags flag = AS_EXITING;
234 AC_DEFINE(HAVE_MAPPING_AS_EXITING_FLAG, 1,
235 [enum mapping_flags has AS_EXITING flag])
237 EXTRA_KCFLAGS="$tmp_flags"
238 ]) # LIBCFS_HAVE_MAPPING_AS_EXITING_FLAG
241 # LIBCFS_IOV_ITER_HAS_TYPE
243 # kernel 3.15-rc4 commit 71d8e532b1549a478e6a6a8a44f309d050294d00
244 # start adding the tag to iov_iter
246 AC_DEFUN([LIBCFS_IOV_ITER_HAS_TYPE], [
247 tmp_flags="$EXTRA_KCFLAGS"
248 EXTRA_KCFLAGS="-Werror"
249 LB_CHECK_COMPILE([if iov_iter has member type],
250 iov_iter_has_type_member, [
251 #include <linux/uio.h>
253 struct iov_iter iter = { .type = ITER_KVEC };
256 AC_DEFINE(HAVE_IOV_ITER_HAS_TYPE_MEMBER, 1,
257 [if iov_iter has member type])
259 EXTRA_KCFLAGS="$tmp_flags"
260 ]) # LIBCFS_IOV_ITER_HAS_TYPE
263 # LIBCFS_HAVE_NS_TO_TIMESPEC64
265 # Kernel version 3.16-rc3 commit a84d1169164b274f13b97a23ff235c000efe3b49
266 # introduced struct __kernel_old_timeval
268 AC_DEFUN([LIBCFS_HAVE_NS_TO_TIMESPEC64],[
269 LB_CHECK_COMPILE([does 'ns_to_timespec64()' exist],
270 kernel_old_timeval, [
271 #include <linux/time.h>
273 struct timespec64 kts;
275 kts = ns_to_timespec64(0);
277 AC_DEFINE(HAVE_NS_TO_TIMESPEC64, 1,
278 [ns_to_timespec64() is available])
280 ]) # LIBCFS_HAVE_NS_TO_TIMESPEC64
285 # Kernel version 3.16 commit b01250856b25f4417c51aa33afc451fbf7da1484
286 # added glob support to the Linux kernel
288 AC_DEFUN([LIBCFS_HAVE_GLOB],[
289 tmp_flags="$EXTRA_KCFLAGS"
290 EXTRA_KCFLAGS="-Werror"
291 LB_CHECK_COMPILE([does 'glob_match()' exist],
293 #include <linux/glob.h>
295 return glob_match(NULL, NULL);
297 AC_DEFINE(HAVE_GLOB, 1,
298 [glob_match() is available])
300 EXTRA_KCFLAGS="$tmp_flags"
301 ]) # LIBCFS_HAVE_GLOB
304 # Kernel version 3.17 changed hlist_add_after to
307 AC_DEFUN([LIBCFS_HLIST_ADD_AFTER],[
308 LB_CHECK_COMPILE([does function 'hlist_add_after' exist],
310 #include <linux/list.h>
312 hlist_add_after(NULL, NULL);
314 AC_DEFINE(HAVE_HLIST_ADD_AFTER, 1,
315 [hlist_add_after is available])
317 ]) # LIBCFS_HLIST_ADD_AFTER
320 # Kernel version 3.17 introduced struct timespec64
322 AC_DEFUN([LIBCFS_TIMESPEC64],[
323 LB_CHECK_COMPILE([does 'struct timespec64' exist],
325 #include <linux/time.h>
327 struct timespec64 ts;
332 AC_DEFINE(HAVE_TIMESPEC64, 1,
333 ['struct timespec64' is available])
335 ]) # LIBCFS_TIMESPEC64
338 # Kernel version 3.17 introduced ktime_get_real_ts64
340 AC_DEFUN([LIBCFS_KTIME_GET_REAL_TS64],[
341 LB_CHECK_COMPILE([does function 'ktime_get_real_ts64' exist],
342 ktime_get_real_ts64, [
343 #include <linux/ktime.h>
345 struct timespec64 *ts = NULL;
347 ktime_get_real_ts64(ts);
349 AC_DEFINE(HAVE_KTIME_GET_REAL_TS64, 1,
350 ['ktime_get_real_ts64' is available])
352 ]) # LIBCFS_KTIME_GET_REAL_TS64
355 # Kernel version 3.17 introduced ktime_get_real_seconds
357 AC_DEFUN([LIBCFS_KTIME_GET_REAL_SECONDS],[
358 LB_CHECK_COMPILE([does function 'ktime_get_real_seconds' exist],
359 ktime_get_real_seconds, [
360 #include <linux/hrtimer.h>
361 #include <linux/ktime.h>
365 now = ktime_get_real_seconds();
367 AC_DEFINE(HAVE_KTIME_GET_REAL_SECONDS, 1,
368 ['ktime_get_real_seconds' is available])
370 ]) # LIBCFS_KTIME_GET_REAL_SECONDS
373 # Kernel version 3.17 created ktime_get_ns wrapper
375 AC_DEFUN([LIBCFS_KTIME_GET_NS],[
376 LB_CHECK_COMPILE([does function 'ktime_get_ns' exist],
378 #include <linux/hrtimer.h>
379 #include <linux/ktime.h>
383 nanoseconds = ktime_get_ns();
385 AC_DEFINE(NEED_KTIME_GET_NS, 1,
386 ['ktime_get_ns' is not available])
388 ]) # LIBCFS_KTIME_GET_NS
391 # Kernel version 3.17 created ktime_get_real_ns wrapper
393 AC_DEFUN([LIBCFS_KTIME_GET_REAL_NS],[
394 LB_CHECK_COMPILE([does function 'ktime_get_real_ns' exist],
396 #include <linux/hrtimer.h>
397 #include <linux/ktime.h>
401 nanoseconds = ktime_get_real_ns();
403 AC_DEFINE(NEED_KTIME_GET_REAL_NS, 1,
404 ['ktime_get_real_ns' is not available])
406 ]) # LIBCFS_KTIME_GET_REAL_NS
409 # Kernel version 3.17 introduced ktime_to_timespec64
411 AC_DEFUN([LIBCFS_KTIME_TO_TIMESPEC64],[
412 LB_CHECK_COMPILE([does function 'ktime_to_timespec64' exist],
413 ktime_to_timespec64, [
414 #include <linux/hrtimer.h>
415 #include <linux/ktime.h>
417 ktime_t now = ktime_set(0, 0);
418 struct timespec64 ts;
420 ts = ktime_to_timespec64(now);
422 AC_DEFINE(HAVE_KTIME_TO_TIMESPEC64, 1,
423 ['ktime_to_timespec64' is available])
425 ]) # LIBCFS_KTIME_TO_TIMESPEC64
428 # Kernel version 3.17 introduced timespec64_sub
430 AC_DEFUN([LIBCFS_TIMESPEC64_SUB],[
431 LB_CHECK_COMPILE([does function 'timespec64_sub' exist],
433 #include <linux/time.h>
435 struct timespec64 later = { }, earlier = { }, diff;
437 diff = timespec64_sub(later, earlier);
439 AC_DEFINE(HAVE_TIMESPEC64_SUB, 1,
440 ['timespec64_sub' is available])
442 ]) # LIBCFS_TIMESPEC64_SUB
445 # Kernel version 3.17 introduced timespec64_to_ktime
447 AC_DEFUN([LIBCFS_TIMESPEC64_TO_KTIME],[
448 LB_CHECK_COMPILE([does function 'timespec64_to_ktime' exist],
449 timespec64_to_ktime, [
450 #include <linux/ktime.h>
452 struct timespec64 ts;
455 now = timespec64_to_ktime(ts);
457 AC_DEFINE(HAVE_TIMESPEC64_TO_KTIME, 1,
458 ['timespec64_to_ktime' is available])
460 ]) # LIBCFS_TIMESPEC64_TO_KTIME
463 # Kernel version 3.19 introduced ktime_get_seconds
465 AC_DEFUN([LIBCFS_KTIME_GET_SECONDS],[
466 LB_CHECK_COMPILE([does function 'ktime_get_seconds' exist],
468 #include <linux/ktime.h>
472 now = ktime_get_seconds();
474 AC_DEFINE(HAVE_KTIME_GET_SECONDS, 1,
475 ['ktime_get_seconds' is available])
477 ]) # LIBCFS_KTIME_GET_SECONDS
480 # Kernel version 3.19 commit v3.18-rc2-26-g61ada528dea0
481 # introduce wait_woken()
483 AC_DEFUN([LIBCFS_WAIT_WOKEN],[
484 LB_CHECK_COMPILE([does function 'wait_woken' exist],
486 #include <linux/wait.h>
488 wait_woken(NULL, 0, 0);
490 AC_DEFINE(HAVE_WAIT_WOKEN, 1,
491 ['wait_woken, is available'])
493 ]) # LIBCFS_WAIT_WOKEN
496 # Kernel version 4.0 commit 41fbf3b39d5eca01527338b4d0ee15ee1ae1023c
497 # introduced the helper function ktime_ms_delta.
499 AC_DEFUN([LIBCFS_KTIME_MS_DELTA],[
500 LB_CHECK_COMPILE([does function 'ktime_ms_delta' exist],
502 #include <linux/ktime.h>
504 ktime_t start = ktime_set(0, 0);
507 ktime_ms_delta(start, end);
509 AC_DEFINE(HAVE_KTIME_MS_DELTA, 1,
510 ['ktime_ms_delta' is available])
512 ]) # LIBCFS_KTIME_MS_DELTA
515 # Kernel version 4.1 commit b51d23e4e9fea6f264d39535c2a62d1f51e7ccc3
516 # create per module locks which added kernel_param_[un]lock(). Older
517 # kernels you have to use __kernel_param_[un]lock(). In that case its
518 # a global lock for all modules but that is okay since its a rare event.
520 AC_DEFUN([LIBCFS_KERNEL_PARAM_LOCK],[
521 LB_CHECK_COMPILE([does function 'kernel_param_[un]lock' exist],
523 #include <linux/moduleparam.h>
525 kernel_param_lock(NULL);
526 kernel_param_unlock(NULL);
528 AC_DEFINE(HAVE_KERNEL_PARAM_LOCK, 1,
529 ['kernel_param_[un]lock' is available])
531 ]) # LIBCFS_KERNEL_PARAM_LOCK
534 # Kernel version 4.2 changed topology_thread_cpumask
535 # to topology_sibling_cpumask
537 AC_DEFUN([LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK],[
538 LB_CHECK_COMPILE([does function 'topology_sibling_cpumask' exist],
539 topology_sibling_cpumask, [
540 #include <linux/topology.h>
542 const struct cpumask *mask;
544 mask = topology_sibling_cpumask(0);
546 AC_DEFINE(HAVE_TOPOLOGY_SIBLING_CPUMASK, 1,
547 [topology_sibling_cpumask is available])
549 ]) # LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
552 # Kernel version 4.4 commit ef951599074ba4fad2d0efa0a977129b41e6d203
553 # introduced kstrtobool and kstrtobool_from_user.
555 AC_DEFUN([LIBCFS_KSTRTOBOOL_FROM_USER], [
556 LB_CHECK_COMPILE([if Linux kernel has 'kstrtobool_from_user'],
557 kstrtobool_from_user, [
558 #include <linux/kernel.h>
561 return kstrtobool_from_user(NULL, 0, &result);
563 AC_DEFINE(HAVE_KSTRTOBOOL_FROM_USER, 1,
564 [kernel has kstrtobool_from_user])
566 ]) # LIBCFS_KSTRTOBOOL_FROM_USER
569 # LIBCFS_NETLINK_CALLBACK_START
571 # Kernel version 4.4-rc3 commit fc9e50f5a5a4e1fa9ba2756f745a13e693cf6a06
572 # added a start function callback for struct netlink_callback
574 AC_DEFUN([LIBCFS_NETLINK_CALLBACK_START], [
575 LB_CHECK_COMPILE([if struct genl_ops has start callback],
577 #include <net/genetlink.h>
583 AC_DEFINE(HAVE_NETLINK_CALLBACK_START, 1,
584 [struct genl_ops has 'start' callback])
586 ]) # LIBCFS_NETLINK_CALLBACK_START
589 # Kernel version 4.5-rc1 commit d12481bc58fba89427565f8592e88446ec084a24
590 # added crypto hash helpers
592 AC_DEFUN([LIBCFS_CRYPTO_HASH_HELPERS], [
593 LB_CHECK_COMPILE([does crypto hash helper functions exist],
594 crypto_hash_helpers, [
595 #include <crypto/hash.h>
597 crypto_ahash_alg_name(NULL);
598 crypto_ahash_driver_name(NULL);
600 AC_DEFINE(HAVE_CRYPTO_HASH_HELPERS, 1,
601 [crypto hash helper functions are available])
603 ]) # LIBCFS_CRYPTO_HASH_HELPERS
606 # Kernel version 4.5-rc1 commit 3502cad73c4bbf8f6365d539e814159275252c59
607 # introduced rhashtable_replace_fast
609 AC_DEFUN([LIBCFS_RHASHTABLE_REPLACE], [
610 LB_CHECK_COMPILE([if 'rhashtable_replace_fast' exists],
611 rhashtable_replace_fast, [
612 #include <linux/rhashtable.h>
614 const struct rhashtable_params params = { 0 };
616 rhashtable_replace_fast(NULL, NULL, NULL, params);
618 AC_DEFINE(HAVE_RHASHTABLE_REPLACE, 1,
619 [rhashtable_replace_fast() is available])
621 ]) # LIBCFS_RHASHTABLE_REPLACE
624 # Kernel version 4.5-rc3 commit 2fe829aca9d7bed5fd6b49c6a1452e5e486b6cc3dd
625 # made kset_find_obj() exportable to modules
627 AC_DEFUN([LIBCFS_EXPORT_KSET_FIND_OBJ], [
628 LB_CHECK_EXPORT([kset_find_obj], [lib/kobject.c],
629 [AC_DEFINE(HAVE_KSET_FIND_OBJ, 1,
630 [kset_find_obj is exported by the kernel])])
631 ]) # LIBCFS_EXPORT_KSET_FIND_OBJ
634 # Kernel version 4.6+ commit ef703f49a6c5b909a85149bb6625c4ed0d697186
635 # fixed the brokenness of hash_64(). The fix removed GOLDEN_RATIO_PRIME_64
636 # since it was a poor prime value.
638 AC_DEFUN([LIBCFS_BROKEN_HASH_64], [
639 LB_CHECK_COMPILE([kernel has fixed hash_64()],
641 #include <linux/hash.h>
643 int tmp = GOLDEN_RATIO_PRIME_64;
645 AC_DEFINE(HAVE_BROKEN_HASH_64, 1, [kernel hash_64() is broken])
647 ]) # LIBCFS_BROKEN_HASH_64
650 # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
652 # linux 4.6 kernel changed stacktrace_ops address to return an int
654 AC_DEFUN([LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT], [
655 LB_CHECK_COMPILE([if 'struct stacktrace_ops' address function returns an int],
656 stacktrace_ops_address_return_int, [
657 #include <asm/stacktrace.h>
661 rc = ((struct stacktrace_ops *)0)->address(NULL, 0, 0);
663 AC_DEFINE(STACKTRACE_OPS_ADDRESS_RETURN_INT, 1,
664 ['struct stacktrace_ops' address function returns an int])
666 ]) # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
669 # Kernel version 4.6 removed both struct task_struct and struct mm_struct
670 # arguments to get_user_pages
672 AC_DEFUN([LIBCFS_GET_USER_PAGES_6ARG], [
673 LB_CHECK_COMPILE([if 'get_user_pages()' takes 6 arguments],
674 get_user_pages_6arg, [
675 #include <linux/mm.h>
679 rc = get_user_pages(0, 0, 0, 0, NULL, NULL);
681 AC_DEFINE(HAVE_GET_USER_PAGES_6ARG, 1,
682 [get_user_pages takes 6 arguments])
684 ]) # LIBCFS_GET_USER_PAGES_6ARG
689 # 4.6 kernel created stringhash.h which moved stuff out of dcache.h
690 # commit f4bcbe792b8f434e32487cff9d9e30ab45a3ce02
692 AC_DEFUN([LIBCFS_STRINGHASH], [
693 LB_CHECK_LINUX_HEADER([linux/stringhash.h], [
694 AC_DEFINE(HAVE_STRINGHASH, 1,
695 [stringhash.h is present])])
696 ]) # LIBCFS_STRINGHASH
699 # LIBCFS_RHASHTABLE_INSERT_FAST
701 # 4.7+ kernel commit 5ca8cc5bf11faed257c762018aea9106d529232f
702 # changed __rhashtable_insert_fast to support the new function
703 # rhashtable_lookup_get_insert_key().
705 AC_DEFUN([LIBCFS_RHASHTABLE_INSERT_FAST], [
706 tmp_flags="$EXTRA_KCFLAGS"
707 EXTRA_KCFLAGS="-Werror"
708 LB_CHECK_COMPILE([if internal '__rhashtable_insert_fast()' returns int],
709 rhashtable_insert_fast, [
710 #include <linux/rhashtable.h>
712 const struct rhashtable_params params = { 0 };
715 rc = __rhashtable_insert_fast(NULL, NULL, NULL, params);
717 AC_DEFINE(HAVE_HASHTABLE_INSERT_FAST_RETURN_INT, 1,
718 ['__rhashtable_insert_fast()' returns int])
720 EXTRA_KCFLAGS="$tmp_flags"
721 ]) # LIBCFS_RHASHTABLE_INSERT_FAST
724 # Kernel version 4.7-rc1 commit 8f6fd83c6c5ec66a4a70c728535ddcdfef4f3697
725 # added 3rd arg to rhashtable_walk_init
727 AC_DEFUN([LIBCFS_RHASHTABLE_WALK_INIT_3ARG], [
728 LB_CHECK_COMPILE([if 'rhashtable_walk_init' has 3 args],
729 rhashtable_walk_init, [
730 #include <linux/gfp.h>
731 #include <linux/rhashtable.h>
733 rhashtable_walk_init(NULL, NULL, GFP_KERNEL);
735 AC_DEFINE(HAVE_3ARG_RHASHTABLE_WALK_INIT, 1,
736 [rhashtable_walk_init() has 3 args])
738 ]) # LIBCFS_RHASHTABLE_WALK_INIT_3ARG
741 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
742 # introduced rhashtable_lookup
744 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP], [
745 LB_CHECK_COMPILE([if 'rhashtable_lookup' exist],
747 #include <linux/rhashtable.h>
749 const struct rhashtable_params params = { 0 };
752 ret = rhashtable_lookup(NULL, NULL, params);
754 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP, 1,
755 [rhashtable_lookup() is available])
757 ]) # LIBCFS_RHASHTABLE_LOOKUP
761 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
762 # created the rhlist interface to allow inserting duplicate objects
763 # into the same table.
765 AC_DEFUN([LIBCFS_RHLTABLE], [
766 LB_CHECK_COMPILE([does 'struct rhltable' exist],
768 #include <linux/rhashtable.h>
770 struct rhltable *hlt;
772 rhltable_destroy(hlt);
774 AC_DEFINE(HAVE_RHLTABLE, 1,
775 [struct rhltable exist])
780 # LIBCFS_STACKTRACE_OPS
782 # Kernel version 4.8 commit c8fe4609827aedc9c4b45de80e7cdc8ccfa8541b
783 # removed both struct stacktrace_ops and dump_trace() function
785 AC_DEFUN([LIBCFS_STACKTRACE_OPS], [
786 LB_CHECK_COMPILE([if 'struct stacktrace_ops' exists],
790 #include <asm/stacktrace.h>
792 struct stacktrace_ops ops;
795 AC_DEFINE(HAVE_STACKTRACE_OPS, 1,
796 [struct stacktrace_ops exists])
798 ]) # LIBCFS_STACKTRACE_OPS
801 # Kernel version 4.9-rc1 commit 246779dd090bd1b74d2652b3a6ca7759f593b27a
802 # introduced rhashtable_walk_enter
804 AC_DEFUN([LIBCFS_RHASHTABLE_WALK_ENTER], [
805 LB_CHECK_COMPILE([if 'rhashtable_walk_enter' exists],
806 rhashtable_walk_enter, [
807 #include <linux/rhashtable.h>
809 rhashtable_walk_enter(NULL, NULL);
811 AC_DEFINE(HAVE_RHASHTABLE_WALK_ENTER, 1,
812 [rhashtable_walk_enter() is available])
814 ]) # LIBCFS_RHASHTABLE_WALK_ENTER
817 # Kernel version 4.9 commit 768ae309a96103ed02eb1e111e838c87854d8b51
818 # mm: replace get_user_pages() write/force parameters with gup_flags
820 AC_DEFUN([LIBCFS_GET_USER_PAGES_GUP_FLAGS], [
821 LB_CHECK_COMPILE([if 'get_user_pages()' takes gup_flags in arguments],
822 get_user_pages_gup_flags, [
823 #include <linux/mm.h>
826 rc = get_user_pages(0, 0, FOLL_WRITE, NULL, NULL);
828 AC_DEFINE(HAVE_GET_USER_PAGES_GUP_FLAGS, 1,
829 [get_user_pages takes gup_flags in arguments])
831 ]) # LIBCFS_GET_USER_PAGES_GUP_FLAGS
834 # Kernel version 4.10 commit 7b737965b33188bd3dbb44e938535c4006d97fbb
835 # libcfs: Convert to hotplug state machine
837 AC_DEFUN([LIBCFS_HOTPLUG_STATE_MACHINE], [
838 LB_CHECK_COMPILE([if libcfs supports CPU hotplug state machine],
839 cpu_hotplug_state_machine, [
840 #include <linux/cpuhotplug.h>
842 cpuhp_remove_state(CPUHP_LUSTRE_CFS_DEAD);
844 AC_DEFINE(HAVE_HOTPLUG_STATE_MACHINE, 1,
845 [hotplug state machine is supported])
847 ]) # LIBCFS_HOTPLUG_STATE_MACHINE
850 # Kernel version 4.10-rc3 commit f405df5de3170c00e5c54f8b7cf4766044a032ba
851 # introduced refcount_t which is atomic_t plus over flow guards.
853 AC_DEFUN([LIBCFS_REFCOUNT_T], [
854 tmp_flags="$EXTRA_KCFLAGS"
855 EXTRA_KCFLAGS="-Werror"
856 LB_CHECK_LINUX_HEADER([linux/refcount.h], [
857 AC_DEFINE(HAVE_REFCOUNT_T, 1,
858 [refcount_t is supported])
860 EXTRA_KCFLAGS="$tmp_flags"
861 ]) # LIBCFS_REFCOUNT_T
864 # Kernel version 4.12 commit 499118e966f1d2150bd66647c8932343c4e9a0b8
865 # introduce memalloc_noreclaim_{save,restore}
867 AC_DEFUN([LIBCFS_MEMALLOC_NORECLAIM], [
868 LB_CHECK_COMPILE([if memalloc_noreclaim_{save,restore} exist],
869 memalloc_noreclaim, [
870 #include <linux/sched/mm.h>
872 int flag = memalloc_noreclaim_save();
873 memalloc_noreclaim_restore(flag);
875 AC_DEFINE(HAVE_MEMALLOC_RECLAIM, 1,
876 [memalloc_noreclaim_{save,restore}() is supported])
878 ]) # LIBCFS_MEMALLOC_NORECLAIM
881 # LIBCFS_SCHED_HEADERS
883 # 4.11 has broken up sched.h into more headers.
885 AC_DEFUN([LIBCFS_SCHED_HEADERS], [
886 LB_CHECK_LINUX_HEADER([linux/sched/signal.h], [
887 AC_DEFINE(HAVE_SCHED_HEADERS, 1,
888 [linux/sched header directory exist])])
889 ]) # LIBCFS_SCHED_HEADERS
892 # Kernel version 4.11-rc1 commit 2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e
893 # introduce kref_read
895 AC_DEFUN([LIBCFS_KREF_READ], [
896 LB_CHECK_COMPILE([if 'kref_read' exists],
898 #include <linux/kref.h>
902 AC_DEFINE(HAVE_KREF_READ, 1,
903 [kref_read() is available])
905 ]) # LIBCFS_KREF_READ
908 # Kernel version 4.11-rc1 commit da20420f83ea0fbcf3d03afda08d971ea1d8a356
909 # introduced rht_bucket_var
911 AC_DEFUN([LIBCFS_RHT_BUCKET_VAR], [
912 LB_CHECK_COMPILE([if 'rht_bucket_var' exists],
914 #include <linux/rhashtable.h>
917 rht_bucket_var(NULL, 0);
919 AC_DEFINE(HAVE_RHT_BUCKET_VAR, 1,
920 [rht_bucket_var() is available])
922 ]) # LIBCFS_RHT_BUCKET_VAR
925 # Kernel version 4.11-rc5 commit fceb6435e85298f747fee938415057af837f5a8a
926 # began the enhanchement of Netlink with extended ACK struct for advanced
927 # error handling. By commit 7ab606d1609dd6dfeae9c8ad0a8a4e051d831e46 we
928 # had full support for this new feature.
930 AC_DEFUN([LIBCFS_NL_EXT_ACK], [
931 LB_CHECK_COMPILE([if Netlink supports netlink_ext_ack],
933 #include <net/genetlink.h>
935 struct genl_info info;
939 AC_DEFINE(HAVE_NL_PARSE_WITH_EXT_ACK, 1,
940 [netlink_ext_ack is an argument to nla_parse type function])
942 ]) # LIBCFS_NL_EXT_ACK
945 # Kernel version 4.11 commit f9fe1c12d126f9887441fa5bb165046f30ddd4b5
946 # introduced rhashtable_lookup_get_insert_fast
948 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST], [
949 LB_CHECK_COMPILE([if 'rhashtable_lookup_get_insert_fast' exist],
950 rhashtable_lookup_get_insert_fast, [
951 #include <linux/rhashtable.h>
953 const struct rhashtable_params params = { 0 };
956 ret = rhashtable_lookup_get_insert_fast(NULL, NULL, params);
958 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP_GET_INSERT_FAST, 1,
959 [rhashtable_lookup_get_insert_fast() is available])
961 ]) # LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
964 # Kernel version 4.12-rc2 8f553c498e1772cccb39a114da4a498d22992758
965 # provide proper CPU hotplug locking
967 AC_DEFUN([LIBCFS_CPUS_READ_LOCK], [
968 LB_CHECK_COMPILE([if 'cpus_read_[un]lock' exist],
970 #include <linux/cpu.h>
975 AC_DEFINE(HAVE_CPUS_READ_LOCK, 1, ['cpus_read_lock' exist])
977 ]) # LIBCFS_CPUS_READ_LOCK
980 # Kernel version 4.12-rc3 f9727a17db9bab71ddae91f74f11a8a2f9a0ece6
981 # renamed uuid_be to uuid_t
983 AC_DEFUN([LIBCFS_UUID_T], [
984 LB_CHECK_COMPILE([if 'uuid_t' exist],
986 #include <linux/uuid.h>
990 memset(uuid.b, 0, 16);
992 AC_DEFINE(HAVE_UUID_T, 1, ['uuid_t' exist])
997 # Kernel version 4.12-rc3 commit fd851a3cdc196bfc1d229b5f22369069af532bf8
998 # introduce processor.h
1000 AC_DEFUN([LIBCFS_HAVE_PROCESSOR_HEADER], [
1001 tmp_flags="$EXTRA_KCFLAGS"
1002 EXTRA_KCFLAGS="-Werror"
1003 LB_CHECK_LINUX_HEADER([linux/processor.h], [
1004 AC_DEFINE(HAVE_PROCESSOR_H, 1,
1005 [processor.h is present])
1007 EXTRA_KCFLAGS="$tmp_flags"
1008 ]) # LIBCFS_HAVE_PROCESSOR_HEADER
1011 # Kernel verison 4.12-rc6 commit 5dd43ce2f69d42a71dcacdb13d17d8c0ac1fe8f7
1012 # created wait_bit.h
1014 AC_DEFUN([LIBCFS_HAVE_WAIT_BIT_HEADER], [
1015 LB_CHECK_LINUX_HEADER([linux/wait_bit.h], [
1016 AC_DEFINE(HAVE_WAIT_BIT_HEADER_H, 1,
1017 [wait_bit.h is present])])
1018 ]) # LIBCFS_HAVE_WAIT_BIT_HEADER
1021 # Kernel version 4.12-rc6 commmit 2055da97389a605c8a00d163d40903afbe413921
1023 # struct wait_queue_head::task_list => ::head
1024 # struct wait_queue_entry::task_list => ::entry
1026 AC_DEFUN([LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME], [
1027 LB_CHECK_COMPILE([if linux wait_queue_head list_head is named head],
1028 wait_queue_task_list, [
1029 #include <linux/wait.h>
1031 wait_queue_head_t e;
1033 INIT_LIST_HEAD(&e.head);
1035 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY_LIST, 1,
1036 [linux wait_queue_head_t list_head is name head])
1038 ]) # LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
1041 # LIBCFS_WAIT_BIT_QUEUE_ENTRY_EXISTS
1043 # Kernel version v4.12-rc6-23-g76c85ddc4695
1044 # sched/wait: Standardize wait_bit_queue naming
1046 # renamed struct wait_bit_queue => wait_bit_queue_entry
1048 AC_DEFUN([LIBCFS_WAIT_BIT_QUEUE_ENTRY_EXISTS], [
1049 LB_CHECK_COMPILE([if struct wait_bit_queue_entry exists],
1050 struct_wait_bit_queue_entry_exists, [
1051 #include <linux/wait.h>
1052 #if HAVE_WAIT_BIT_HEADER_H
1053 #include <linux/wait_bit.h>
1056 struct wait_bit_queue_entry entry;
1057 memset(&entry, 0, sizeof(entry));
1059 AC_DEFINE(HAVE_WAIT_BIT_QUEUE_ENTRY, 1,
1060 [if struct wait_bit_queue_entry exists])
1062 ]) # LIBCFS_WAIT_BIT_QUEUE_ENTRY_EXISTS
1067 # Kernel version 4.13-rc1 commit 2cf0c8b3e6942ecafe6ebb1a6d0328a81641bf39
1068 # created nla_strdup(). This is needed since push strings can be
1071 AC_DEFUN([LIBCFS_NLA_STRDUP], [
1072 LB_CHECK_COMPILE([if 'nla_strdup()' exists],
1074 #include <net/netlink.h>
1076 char *tmp = nla_strdup(NULL, GFP_KERNEL);
1078 AC_DEFINE(HAVE_NLA_STRDUP, 1,
1079 ['nla_strdup' is available])
1081 ]) # LIBCFS_NLA_STRDUP
1084 # LIBCFS_WAIT_QUEUE_ENTRY
1086 # Kernel version 4.13 ac6424b981bce1c4bc55675c6ce11bfe1bbfa64f
1087 # Rename wait_queue_t => wait_queue_entry_t
1089 AC_DEFUN([LIBCFS_WAIT_QUEUE_ENTRY], [
1090 LB_CHECK_COMPILE([if 'wait_queue_entry_t' exists],
1092 #include <linux/wait.h>
1094 wait_queue_entry_t e;
1098 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY, 1,
1099 ['wait_queue_entry_t' is available])
1101 ]) # LIBCFS_WAIT_QUEUE_ENTRY
1104 # LIBCFS_NEW_KERNEL_WRITE
1106 # Kernel version 4.14 e13ec939e96b13e664bb6cee361cc976a0ee621a
1107 # changed kernel_write prototype to make is plug compatible
1108 # with the unexported vfs_write()
1110 AC_DEFUN([LIBCFS_NEW_KERNEL_WRITE], [
1111 tmp_flags="$EXTRA_KCFLAGS"
1112 EXTRA_KCFLAGS="-Werror"
1113 LB_CHECK_COMPILE([if 'kernel_write' matches other read/write helpers],
1114 kernel_write_match, [
1115 #include <linux/fs.h>
1117 const void *buf = NULL;
1119 return kernel_write(NULL, buf, 0, &pos);
1121 AC_DEFINE(HAVE_NEW_KERNEL_WRITE, 1,
1122 ['kernel_write' aligns with read/write helpers])
1124 EXTRA_KCFLAGS="$tmp_flags"
1125 ]) # LIBCFS_NEW_KERNEL_WRITE
1128 # LIBCFS_MM_TOTALRAM_PAGES_FUNC
1130 # kernel 5.0 commit ca79b0c211af63fa3276f0e3fd7dd9ada2439839
1131 # mm: convert totalram_pages and totalhigh_pages variables to atomic
1133 AC_DEFUN([LIBCFS_MM_TOTALRAM_PAGES_FUNC], [
1134 tmp_flags="$EXTRA_KCFLAGS"
1135 EXTRA_KCFLAGS="-Werror"
1136 LB_CHECK_COMPILE([if totalram_pages is a function],
1138 #include <linux/mm.h>
1140 totalram_pages_inc();
1142 AC_DEFINE(HAVE_TOTALRAM_PAGES_AS_FUNC, 1,
1143 [if totalram_pages is a function])
1145 EXTRA_KCFLAGS="$tmp_flags"
1146 ]) # LIBCFS_MM_TOTALRAM_PAGES_FUNC
1149 # LIBCFS_NEW_KERNEL_READ
1151 # 4.14 commit bdd1d2d3d251c65b74ac4493e08db18971c09240 changed
1152 # the signature of kernel_read to match other read/write helpers
1153 # and place offset last.
1155 AC_DEFUN([LIBCFS_NEW_KERNEL_READ], [
1156 tmp_flags="$EXTRA_KCFLAGS"
1157 EXTRA_KCFLAGS="-Werror"
1158 LB_CHECK_COMPILE([if 'kernel_read()' has loff_t *pos as last parameter],
1160 #include <linux/fs.h>
1163 kernel_read(NULL, NULL, 0, &pos);
1165 AC_DEFINE(HAVE_KERNEL_READ_LAST_POSP, 1,
1166 [kernel_read() signature ends with loff_t *pos])
1168 EXTRA_KCFLAGS="$tmp_flags"
1169 ]) # LIBCFS_NEW_KERNEL_READ
1172 # LIBCFS_DEFINE_TIMER
1174 # Kernel version 4.14 commit 1d27e3e2252ba9d949ca82fbdb73cde102cb2067
1175 # remove expires and data arguments from DEFINE_TIMER. Also the callback
1176 # when from using unsigned long argument to using struct timer_list pointer.
1178 AC_DEFUN([LIBCFS_DEFINE_TIMER], [
1179 LB_CHECK_COMPILE([if DEFINE_TIMER takes only 2 arguments],
1181 #include <linux/timer.h>
1183 static DEFINE_TIMER(my_timer, NULL);
1185 AC_DEFINE(HAVE_NEW_DEFINE_TIMER, 1,
1186 [DEFINE_TIMER uses only 2 arguements])
1188 ]) # LIBCFS_DEFINE_TIMER
1191 # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1193 # Kernel 2.6.27 commit 8594698ebddeef5443b7da8258ae33b3eaca61d5
1194 # exported save_stack_trace_tsk for x86.
1195 # Kernel 2.6.27 commit 01f4b8b8b8db09b88be7df7e51192e4e678b69d3
1196 # exported save_stack_trace_tsk for powerpc
1197 # Kernel 4.13 commit e27c7fa015d61c8be6a2c32b2144aad2ae6ec975
1198 # exported save_stack_trace_tsk for arm64
1199 # Kernel 4.14 commit 9a3dc3186fc3795e076a4122da9e0258651a9631
1200 # exported save_stack_trace_tsk for arm
1202 AC_DEFUN([LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK], [
1203 LB_CHECK_EXPORT([save_stack_trace_tsk], [arch/$SUBARCH/kernel/stacktrace.c],
1204 [AC_DEFINE(HAVE_SAVE_STACK_TRACE_TSK, 1,
1205 [save_stack_trace_tsk is exported])])
1206 ]) # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1209 # LIBCFS_LOCKDEP_IS_HELD
1211 # Kernel v4.15-rc8-106-g08f36ff64234
1212 # lockdep: Make lockdep checking constant
1214 AC_DEFUN([LIBCFS_LOCKDEP_IS_HELD], [
1215 tmp_flags="$EXTRA_KCFLAGS"
1216 EXTRA_KCFLAGS="-Werror"
1217 LB_CHECK_COMPILE([if 'lockdep_is_held()' uses const argument],
1219 #include <linux/lockdep.h>
1221 #ifdef CONFIG_LOCKDEP
1222 const struct spinlock *lock = NULL;
1224 lockdep_is_held(lock);
1227 AC_DEFINE(NEED_LOCKDEP_IS_HELD_DISCARD_CONST, 1,
1228 [lockdep_is_held() argument is const])
1230 EXTRA_KCFLAGS="$tmp_flags"
1231 ]) # LIBCFS_LOCKDEP_IS_HELD
1234 # LIBCFS_TIMER_SETUP
1236 # Kernel version 4.15 commit e99e88a9d2b067465adaa9c111ada99a041bef9a
1237 # setup_timer() was replaced by timer_setup(), where the callback
1238 # argument is the structure already holding the struct timer_list.
1240 AC_DEFUN([LIBCFS_TIMER_SETUP], [
1241 LB_CHECK_COMPILE([if setup_timer has been replaced with timer_setup],
1243 #include <linux/timer.h>
1245 timer_setup(NULL, NULL, 0);
1247 AC_DEFINE(HAVE_TIMER_SETUP, 1,
1248 [timer_setup has replaced setup_timer])
1250 ]) # LIBCFS_TIMER_SETUP
1253 # LIBCFS_WAIT_VAR_EVENT
1255 # Kernel version 4.16-rc4 commit 6b2bb7265f0b62605e8caee3613449ed0db270b9
1256 # added wait_var_event()
1258 AC_DEFUN([LIBCFS_WAIT_VAR_EVENT], [
1259 LB_CHECK_COMPILE([if 'wait_var_event' exist],
1261 #ifdef HAVE_WAIT_BIT_HEADER_H
1262 #include <linux/wait_bit.h>
1264 #include <linux/wait.h>
1268 AC_DEFINE(HAVE_WAIT_VAR_EVENT, 1,
1269 ['wait_var_event' is available])
1271 ]) # LIBCFS_WAIT_VAR_EVENT
1274 # LIBCFS_BITMAP_ALLOC
1276 # Kernel version 4.17 commit c42b65e363ce97a828f81b59033c3558f8fa7f70
1277 # added bitmap memory allocation handling.
1279 AC_DEFUN([LIBCFS_BITMAP_ALLOC], [
1280 LB_CHECK_COMPILE([if Linux bitmap memory management exist],
1282 #include <linux/bitmap.h>
1284 unsigned long *map = bitmap_alloc(1, GFP_KERNEL);
1286 AC_DEFINE(HAVE_BITMAP_ALLOC, 1,
1287 [Linux bitmap can be allocated])
1289 ]) # LIBCFS_BITMAP_ALLOC
1292 # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1294 # Kernel version 4.17-rc2 commit 8236b0ae31c837d2b3a2565c5f8d77f637e824cc
1295 # added clear_and_wake_up_bit()
1297 AC_DEFUN([LIBCFS_CLEAR_AND_WAKE_UP_BIT], [
1298 LB_CHECK_COMPILE([if 'clear_and_wake_up_bit' exist],
1299 clear_and_wake_up_bit, [
1300 #ifdef HAVE_WAIT_BIT_HEADER_H
1301 #include <linux/wait_bit.h>
1303 #include <linux/wait.h>
1305 clear_and_wake_up_bit(0, NULL);
1307 AC_DEFINE(HAVE_CLEAR_AND_WAKE_UP_BIT, 1,
1308 ['clear_and_wake_up_bit' is available])
1310 ]) # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1313 # LIBCFS_TCP_SOCK_SET_NODELAY
1315 # kernel 4.18.0-293.el8
1316 # tcp_sock_set_nodelay() was added
1317 AC_DEFUN([LIBCFS_TCP_SOCK_SET_NODELAY], [
1318 tmp_flags="$EXTRA_KCFLAGS"
1319 EXTRA_KCFLAGS="-Werror"
1320 LB_CHECK_COMPILE([if 'tcp_sock_set_nodelay()' exists],
1321 tcp_sock_set_nodelay_exists, [
1322 #include <linux/tcp.h>
1324 tcp_sock_set_nodelay(NULL);
1326 AC_DEFINE(HAVE_TCP_SOCK_SET_NODELAY, 1,
1327 ['tcp_sock_set_nodelay()' exists])
1329 EXTRA_KCFLAGS="$tmp_flags"
1330 ]) # LIBCFS_TCP_SOCK_SET_NODELAY
1333 # LIBCFS_TCP_SOCK_SET_KEEPIDLE
1335 # kernel 4.18.0-293.el8
1336 # tcp_sock_set_keepidle() was added
1337 AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPIDLE], [
1338 tmp_flags="$EXTRA_KCFLAGS"
1339 EXTRA_KCFLAGS="-Werror"
1340 LB_CHECK_COMPILE([if 'tcp_sock_set_keepidle()' exists],
1341 tcp_sock_set_keepidle_exists, [
1342 #include <linux/tcp.h>
1344 tcp_sock_set_keepidle(NULL, 0);
1346 AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPIDLE, 1,
1347 ['tcp_sock_set_keepidle()' exists])
1349 EXTRA_KCFLAGS="$tmp_flags"
1350 ]) # LIBCFS_TCP_SOCK_SET_KEEPIDLE
1353 # LIBCFS_TCP_SOCK_SET_QUICKACK
1354 # kernel v5.7-rc6-2504-gddd061b8daed
1355 # tcp: add tcp_sock_set_quickack
1357 AC_DEFUN([LIBCFS_TCP_SOCK_SET_QUICKACK], [
1358 tmp_flags="$EXTRA_KCFLAGS"
1359 EXTRA_KCFLAGS="-Werror"
1360 LB_CHECK_COMPILE([if 'tcp_sock_set_quickack()' exists],
1361 tcp_sock_set_quickack_exists, [
1362 #include <linux/tcp.h>
1364 tcp_sock_set_quickack(NULL, 0);
1366 AC_DEFINE(HAVE_TCP_SOCK_SET_QUICKACK, 1,
1367 ['tcp_sock_set_quickack()' exists])
1369 EXTRA_KCFLAGS="$tmp_flags"
1370 ]) # LIBCFS_TCP_SOCK_SET_QUICKACK
1373 # LIBCFS_TCP_SOCK_SET_KEEPINTVL
1374 # v5.7-rc6-2508-gd41ecaac903c
1375 # tcp: add tcp_sock_set_keepintvl
1377 AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPINTVL], [
1378 tmp_flags="$EXTRA_KCFLAGS"
1379 EXTRA_KCFLAGS="-Werror"
1380 LB_CHECK_COMPILE([if 'tcp_sock_set_keepintvl()' exists],
1381 tcp_sock_set_keepintvl_exists, [
1382 #include <linux/tcp.h>
1384 tcp_sock_set_keepintvl(NULL, 0);
1386 AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPINTVL, 1,
1387 ['tcp_sock_set_keepintvl()' exists])
1389 EXTRA_KCFLAGS="$tmp_flags"
1390 ]) # LIBCFS_TCP_SOCK_SET_KEEPINTVL
1393 # LIBCFS_TCP_SOCK_SET_KEEPCNT
1394 # v5.7-rc6-2509-g480aeb9639d6
1395 # tcp: add tcp_sock_set_keepcnt
1397 AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPCNT], [
1398 tmp_flags="$EXTRA_KCFLAGS"
1399 EXTRA_KCFLAGS="-Werror"
1400 LB_CHECK_COMPILE([if 'tcp_sock_set_keepcnt()' exists],
1401 tcp_sock_set_keepcnt_exists, [
1402 #include <linux/tcp.h>
1404 tcp_sock_set_keepcnt(NULL, 0);
1406 AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPCNT, 1,
1407 ['tcp_sock_set_keepcnt()' exists])
1409 EXTRA_KCFLAGS="$tmp_flags"
1410 ]) # LIBCFS_TCP_SOCK_SET_KEEPCNT
1413 # LIBCFS_XARRAY_SUPPORT
1415 # 4.19-rc5 kernel commit 3159f943aafdbacb2f94c38fdaadabf2bbde2a14
1416 # replaced the radix tree implementation with Xarrays. This change
1417 # introduced functionaly needed for general Xarray support
1419 AC_DEFUN([LIBCFS_XARRAY_SUPPORT], [
1420 tmp_flags="$EXTRA_KCFLAGS"
1421 EXTRA_KCFLAGS="-Werror"
1422 LB_CHECK_COMPILE([if page cache uses Xarray],
1424 #include <linux/xarray.h>
1428 AC_DEFINE(HAVE_XARRAY_SUPPORT, 1,
1429 [kernel Xarray implementation lacks 'xa_is_value'])
1431 EXTRA_KCFLAGS="$tmp_flags"
1432 ]) # LIBCFS_XARRAY_SUPPORT
1435 # Kernel version 4.19-rc6 commit 4a19edb60d0203cd5bf95a8b46ea8f63fd41194c
1436 # added extended ACK handling to Netlink dump handlers
1438 AC_DEFUN([LIBCFS_NL_DUMP_EXT_ACK], [
1439 LB_CHECK_COMPILE([if Netlink dump handlers support ext_ack],
1440 netlink_dump_ext_ack, [
1441 #include <net/netlink.h>
1443 struct netlink_callback *cb = NULL;
1446 AC_DEFINE(HAVE_NL_DUMP_WITH_EXT_ACK, 1,
1447 [netlink_ext_ack is handled for Netlink dump handlers])
1449 ]) # LIBCFS_NL_DUMP_EXT_ACK
1452 # LIBCFS_HAVE_IOV_ITER_TYPE
1454 # kernel 4.20 commit 00e23707442a75b404392cef1405ab4fd498de6b
1455 # iov_iter: Use accessor functions to access an iterator's type and direction.
1457 AC_DEFUN([LIBCFS_HAVE_IOV_ITER_TYPE], [
1458 tmp_flags="$EXTRA_KCFLAGS"
1459 EXTRA_KCFLAGS="-Werror"
1460 LB_CHECK_COMPILE([if iov_iter_type exists],
1461 macro_iov_iter_type_exists, [
1462 #include <linux/uio.h>
1464 struct iov_iter iter = { .type = ITER_KVEC };
1465 enum iter_type type = iov_iter_type(&iter);
1468 AC_DEFINE(HAVE_IOV_ITER_TYPE, 1,
1469 [if iov_iter_type exists])
1471 EXTRA_KCFLAGS="$tmp_flags"
1472 ]) # LIBCFS_HAVE_IOV_ITER_TYPE
1475 # LIBCFS_GET_REQUEST_KEY_AUTH
1477 # kernel 5.0 commit 822ad64d7e46a8e2c8b8a796738d7b657cbb146d
1478 # keys: Fix dependency loop between construction record and auth key
1480 # Added <keys/request_key_auth-type.h> and get_request_key_auth()
1481 # which was propagated to stable
1483 AC_DEFUN([LIBCFS_GET_REQUEST_KEY_AUTH], [
1484 tmp_flags="$EXTRA_KCFLAGS"
1485 EXTRA_KCFLAGS="-Werror"
1486 LB_CHECK_COMPILE([if get_request_key_auth() is available],
1487 get_request_key_auth_exported, [
1488 #include <linux/key.h>
1489 #include <linux/keyctl.h>
1490 #include <keys/request_key_auth-type.h>
1493 const struct key *key = NULL;
1494 struct request_key_auth *rka = get_request_key_auth(key);
1496 ring = key_get(rka->dest_keyring);
1498 AC_DEFINE(HAVE_GET_REQUEST_KEY_AUTH, 1,
1499 [get_request_key_auth() is available])
1501 EXTRA_KCFLAGS="$tmp_flags"
1502 ]) # LIBCFS_GET_REQUEST_KEY_AUTH
1505 # LIBCFS_LOOKUP_USER_KEY
1507 # kernel 5.3 commit 3cf5d076fb4d48979f382bc9452765bf8b79e740
1508 # signal: Remove task parameter from force_sig
1510 AC_DEFUN([LIBCFS_LOOKUP_USER_KEY], [
1511 tmp_flags="$EXTRA_KCFLAGS"
1512 EXTRA_KCFLAGS="-Werror"
1513 LB_CHECK_COMPILE([if lookup_user_key() is available],
1514 lookup_user_key_exported, [
1515 #include <linux/key.h>
1516 #include <linux/keyctl.h>
1518 lookup_user_key(KEY_SPEC_USER_KEYRING, 0, 0);
1520 AC_DEFINE(HAVE_LOOKUP_USER_KEY, 1,
1521 [lookup_user_key() is available])
1523 EXTRA_KCFLAGS="$tmp_flags"
1524 ]) # LIBCFS_LOOKUP_USER_KEY
1527 # LIBCFS_FORCE_SIG_WITH_TASK
1529 # kernel 5.3 commit 3cf5d076fb4d48979f382bc9452765bf8b79e740
1530 # signal: Remove task parameter from force_sig
1532 AC_DEFUN([LIBCFS_FORCE_SIG_WITH_TASK], [
1533 tmp_flags="$EXTRA_KCFLAGS"
1534 EXTRA_KCFLAGS="-Werror"
1535 LB_CHECK_COMPILE([if force_sig has task parameter],
1536 force_sig_with_task, [
1537 #include <linux/sched/signal.h>
1539 force_sig(SIGINT, NULL);
1541 AC_DEFINE(HAVE_FORCE_SIG_WITH_TASK, 1,
1542 [force_sig() has task parameter])
1544 EXTRA_KCFLAGS="$tmp_flags"
1545 ]) # LIBCFS_FORCE_SIG_WITH_TASK
1548 # LIBCFS_CACHE_DETAIL_WRITERS
1550 # kernel v5.3-rc2-1-g64a38e840ce5
1551 # SUNRPC: Track writers of the 'channel' file to improve cache_listeners_exist
1553 AC_DEFUN([LIBCFS_CACHE_DETAIL_WRITERS], [
1554 tmp_flags="$EXTRA_KCFLAGS"
1555 EXTRA_KCFLAGS="-Werror"
1556 LB_CHECK_COMPILE([if struct cache_detail has writers],
1557 cache_detail_writers_atomic, [
1558 #include <linux/sunrpc/cache.h>
1560 static struct cache_detail rsi_cache;
1562 atomic_set(&rsi_cache.writers, 0);
1564 AC_DEFINE(HAVE_CACHE_DETAIL_WRITERS, 1,
1565 [struct cache_detail has writers])
1567 EXTRA_KCFLAGS="$tmp_flags"
1568 ]) # LIBCFS_CACHE_DETAIL_WRITERS
1571 # LIBCFS_GENL_DUMPIT_INFO
1573 # kernel v5.4-rc1 commit bf813b0afeae2f012f0e527a526c1b78ca21ad82
1574 # expanded struct genl_dumpit_info to include struct genl_family.
1576 AC_DEFUN([LIBCFS_GENL_DUMPIT_INFO], [
1577 tmp_flags="$EXTRA_KCFLAGS"
1578 EXTRA_KCFLAGS="-Werror"
1579 LB_CHECK_COMPILE([if struct genl_dumpit_info has family field],
1581 #include <net/genetlink.h>
1583 static struct genl_dumpit_info info;
1587 AC_DEFINE(HAVE_GENL_DUMPIT_INFO, 1,
1588 [struct genl_dumpit_info has family field])
1590 EXTRA_KCFLAGS="$tmp_flags"
1591 ]) # LIBCFS_GENL_DUMPIT_INFO
1594 # LIBCFS_KALLSYMS_LOOKUP
1596 # kernel v5.6-11591-g0bd476e6c671
1597 # kallsyms: unexport kallsyms_lookup_name() and kallsyms_on_each_symbol()
1598 AC_DEFUN([LIBCFS_KALLSYMS_LOOKUP], [
1599 LB_CHECK_EXPORT([kallsyms_lookup_name], [kernel/kallsyms.c],
1600 [AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1,
1601 [kallsyms_lookup_name is exported by kernel])])
1602 ]) # LIBCFS_KALLSYMS_LOOKUP
1605 # v5.5-8862-gd56c0d45f0e2
1606 # proc: decouple proc from VFS with "struct proc_ops"
1608 AC_DEFUN([LIBCFS_SRC_HAVE_PROC_OPS], [
1609 LB2_LINUX_TEST_SRC([proc_ops], [
1610 #include <linux/proc_fs.h>
1612 static struct proc_ops *my_proc;
1614 my_proc->proc_lseek = NULL;
1616 ]) # LIBCFS_SRC_HAVE_PROC_OPS
1617 AC_DEFUN([LIBCFS_HAVE_PROC_OPS], [
1618 AC_MSG_CHECKING([if struct proc_ops exists])
1619 LB2_LINUX_TEST_RESULT([proc_ops], [
1620 AC_DEFINE(HAVE_PROC_OPS, 1,
1621 [struct proc_ops exists])
1626 ]) # LIBCFS_HAVE_PROC_OPS
1629 # LIBCFS_VMALLOC_2ARGS
1631 # kernel v5.8-rc1~201^2~19
1632 # mm: remove the pgprot argument to __vmalloc
1633 AC_DEFUN([LIBCFS_VMALLOC_2ARGS], [
1634 LB_CHECK_COMPILE([if __vmalloc has 2 args],
1636 #include <linux/vmalloc.h>
1640 AC_DEFINE(HAVE_VMALLOC_2ARGS, 1,
1641 [__vmalloc only takes 2 args.])
1643 ]) # LIBCFS_VMALLOC_2ARGS
1646 # LIBCFS_HAVE_NR_UNSTABLE_NFS
1648 # kernel v5.8-rc1~201^2~75
1649 # mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead
1651 AC_DEFUN([LIBCFS_HAVE_NR_UNSTABLE_NFS], [
1652 tmp_flags="$EXTRA_KCFLAGS"
1653 EXTRA_KCFLAGS="-Werror"
1654 LB_CHECK_COMPILE([if NR_UNSTABLE_NFS still in use],
1655 nr_unstable_nfs_exists, [
1656 #include <linux/mm.h>
1660 i = NR_UNSTABLE_NFS;
1662 AC_DEFINE(HAVE_NR_UNSTABLE_NFS, 1,
1663 [NR_UNSTABLE_NFS is still in use.])
1665 EXTRA_KCFLAGS="$tmp_flags"
1666 ]) # LIBCFS_HAVE_NR_UNSTABLE_NFS
1669 # LIBCFS_HAVE_MMAP_LOCK
1671 # kernel v5.8-rc1~83^2~24
1672 # mmap locking API: rename mmap_sem to mmap_lock
1674 AC_DEFUN([LIBCFS_HAVE_MMAP_LOCK], [
1675 LB_CHECK_COMPILE([if mmap_lock API is available],
1677 #include <linux/mm.h>
1679 mmap_write_lock(NULL);
1681 AC_DEFINE(HAVE_MMAP_LOCK, 1,
1682 [mmap_lock API is available.])
1684 ]) # LIBCFS_HAVE_MMAP_LOCK
1687 # LIBCFS_KERNEL_SETSOCKOPT
1689 # kernel v5.8-rc1~165^2~59^2
1690 # net: remove kernel_setsockopt
1691 AC_DEFUN([LIBCFS_KERNEL_SETSOCKOPT], [
1692 tmp_flags="$EXTRA_KCFLAGS"
1693 EXTRA_KCFLAGS="-Werror"
1694 LB_CHECK_COMPILE([if kernel_setsockopt still in use],
1695 kernel_setsockopt_exists, [
1696 #include <linux/net.h>
1698 kernel_setsockopt(NULL, 0, 0, NULL, 0);
1700 AC_DEFINE(HAVE_KERNEL_SETSOCKOPT, 1,
1701 [kernel_setsockopt still in use])
1703 EXTRA_KCFLAGS="$tmp_flags"
1704 ]) # LIBCFS_KERNEL_SETSOCKOPT
1707 # LIBCFS_SEC_RELEASE_SECCTX
1709 # kernel linux-hwe-5.8 (5.8.0-22.23~20.04.1)
1710 # LSM: Use lsmcontext in security_release_secctx
1711 AC_DEFUN([LIBCFS_SEC_RELEASE_SECCTX], [
1712 LB_CHECK_COMPILE([if security_release_secctx has 1 arg],
1713 security_release_secctx_1arg, [
1714 #include <linux/security.h>
1716 security_release_secctx(NULL);
1718 AC_DEFINE(HAVE_SEC_RELEASE_SECCTX_1ARG, 1,
1719 [security_release_secctx has 1 arg.])
1721 ]) # LIBCFS_SEC_RELEASE_SECCTX
1724 # LIBCFS_HAVE_KFREE_SENSITIVE
1726 # kernel v5.10-rc1~3
1727 # mm: remove kzfree() compatibility definition
1729 AC_DEFUN([LIBCFS_HAVE_KFREE_SENSITIVE], [
1730 LB_CHECK_COMPILE([if kfree_sensitive() is available],
1731 kfree_sensitive_exists, [
1732 #include <linux/slab.h>
1735 kfree_sensitive(NULL);
1737 AC_DEFINE(HAVE_KFREE_SENSITIVE, 1,
1738 [kfree_sensitive() is available.])
1740 EXTRA_KCFLAGS="$tmp_flags"
1741 ]) # LIBCFS_HAVE_KFREE_SENSITIVE
1744 # LIBCFS_HAVE_CRYPTO_SHA2_HEADER
1746 # Kernel v5.10-rc1-114-ga24d22b225ce
1747 # crypto: sha - split sha.h into sha1.h and sha2.h
1749 AC_DEFUN([LIBCFS_HAVE_CRYPTO_SHA2_HEADER], [
1750 LB_CHECK_LINUX_HEADER([crypto/sha2.h], [
1751 AC_DEFINE(HAVE_CRYPTO_SHA2_HEADER, 1,
1752 [crypto/sha2.h is present])])
1753 ]) # LIBCFS_HAVE_CRYPTO_SHA2_HEADER
1756 # LIBCFS_HAVE_LIST_CMP_FUNC_T
1758 # kernel 5.10.70 commit 4f0f586bf0c898233d8f316f471a21db2abd522d
1759 # treewide: Change list_sort to use const pointers
1760 AC_DEFUN([LIBCFS_HAVE_LIST_CMP_FUNC_T], [
1761 tmp_flags="$EXTRA_KCFLAGS"
1762 EXTRA_KCFLAGS="-Werror -Wno-unused-variable"
1763 LB_CHECK_COMPILE([if list_cmp_func_t type is defined],
1765 #include <linux/list_sort.h>
1767 list_cmp_func_t cmp;
1769 AC_DEFINE(HAVE_LIST_CMP_FUNC_T, 1,
1770 [list_cmp_func_t type is defined])
1772 EXTRA_KCFLAGS="$tmp_flags"
1773 ]) # LIBCFS_HAVE_LIST_CMP_FUNC_T
1776 # LIBCFS_NLA_STRSCPY
1778 # Kernel version 5.10-rc3 commit 872f690341948b502c93318f806d821c56772c42
1779 # replaced nla_strlcpy() with nla_strscpy().
1781 AC_DEFUN([LIBCFS_SRC_NLA_STRSCPY], [
1782 LB2_LINUX_TEST_SRC([nla_strscpy], [
1783 #include <net/netlink.h>
1785 if (nla_strscpy(NULL, NULL, 0) < 0)
1790 AC_DEFUN([LIBCFS_NLA_STRSCPY], [
1791 AC_MSG_CHECKING([if 'nla_strscpy()' exists])
1792 LB2_LINUX_TEST_RESULT([nla_strscpy], [
1793 AC_DEFINE(HAVE_NLA_STRSCPY, 1,
1794 ['nla_strscpy' is available])
1799 ]) # LIBCFS_NLA_STRSCPY
1802 # LIBCFS_HAVE_CIPHER_HEADER
1804 # Kernel 5.12 commit 0eb76ba29d16df2951d37c54ca279c4e5630b071
1805 # crypto: remove cipher routines from public crypto API
1807 AC_DEFUN([LIBCFS_HAVE_CIPHER_HEADER], [
1808 tmp_flags="$EXTRA_KCFLAGS"
1809 EXTRA_KCFLAGS="-Werror"
1810 LB_CHECK_LINUX_HEADER([crypto/internal/cipher.h], [
1811 AC_DEFINE(HAVE_CIPHER_H, 1,
1812 [crypto/internal/cipher.h is present])
1814 EXTRA_KCFLAGS="$tmp_flags"
1815 ]) # LIBCFS_HAVE_CIPHER_HEADER
1818 # LIBCFS_HAVE_PANIC_NOTIFIER_HEADER
1820 # Kernel 5.14 commit f39650de687e35766572ac89dbcd16a5911e2f0a
1821 # kernel.h: split out panic and oops helpers
1823 AC_DEFUN([LIBCFS_HAVE_PANIC_NOTIFIER_HEADER], [
1824 tmp_flags="$EXTRA_KCFLAGS"
1825 EXTRA_KCFLAGS="-Werror"
1826 LB_CHECK_LINUX_HEADER([linux/panic_notifier.h], [
1827 AC_DEFINE(HAVE_PANIC_NOTIFIER_H, 1,
1828 [linux/panic_notifier.h is present])
1830 EXTRA_KCFLAGS="$tmp_flags"
1831 ]) # LIBCFS_HAVE_PANIC_NOTIFIER_HEADER
1834 # LIBCFS_PARAM_SET_UINT_MINMAX
1836 # Kernel 5.15-rc1 commit 2a14c9ae15a38148484a128b84bff7e9ffd90d68
1837 # moved param_set_uint_minmax to common code
1839 AC_DEFUN([LIBCFS_PARAM_SET_UINT_MINMAX],[
1840 LB_CHECK_COMPILE([does function 'param_set_uint_minmax' exist],
1841 param_set_uint_minmax, [
1842 #include <linux/moduleparam.h>
1844 param_set_uint_minmax(NULL, NULL, 0, 0);
1846 AC_DEFINE(HAVE_PARAM_SET_UINT_MINMAX, 1,
1847 ['param_set_uint_minmax' is available])
1849 ]) # LIBCFS_PARAM_SET_UINT_MINMAX
1851 AC_DEFUN([LIBCFS_PROG_LINUX_SRC], [
1853 LIBCFS_SRC_HAVE_PROC_OPS
1855 LIBCFS_SRC_NLA_STRSCPY
1857 AC_MSG_CHECKING([for available kernel interfaces to libcfs])
1858 LB2_LINUX_TEST_COMPILE_ALL([libcfs])
1859 AC_MSG_RESULT([done])
1861 AC_DEFUN([LIBCFS_PROG_LINUX_RESULTS], [
1863 LIBCFS_HAVE_PROC_OPS
1869 # LIBCFS_LINUX_BLK_INTEGRITY_HEADER
1871 # Kernel 5.15-rc6 commit fe45e630a1035aea94c29016f2598bbde149bbe3
1872 # block: move integrity handling out of <linux/blkdev.h>
1874 AC_DEFUN([LIBCFS_LINUX_BLK_INTEGRITY_HEADER], [
1875 tmp_flags="$EXTRA_KCFLAGS"
1876 EXTRA_KCFLAGS="-Werror"
1877 LB_CHECK_LINUX_HEADER([linux/blk-integrity.h], [
1878 AC_DEFINE(HAVE_LINUX_BLK_INTEGRITY_HEADER, 1,
1879 [linux/blk-integrity.h is present])
1881 EXTRA_KCFLAGS="$tmp_flags"
1882 ]) # LIBCFS_LINUX_BLK_INTEGRITY_HEADER
1887 # LibCFS linux kernel checks
1889 AC_DEFUN([LIBCFS_PROG_LINUX], [
1890 AC_MSG_NOTICE([LibCFS kernel checks
1891 ==============================================================================])
1892 LIBCFS_CONFIG_PANIC_DUMPLOG
1895 LIBCFS_KTIME_GET_TS64
1897 LIBCFS_PREPARE_TO_WAIT_EVENT
1898 LIBCFS_KERNEL_PARAM_OPS
1902 LIBCFS_KTIME_COMPARE
1903 LIBCFS_SHRINKER_COUNT
1905 LIBCFS_MATCH_WILDCARD
1907 LIBCFS_HAVE_MAPPING_AS_EXITING_FLAG
1908 LIBCFS_IOV_ITER_HAS_TYPE
1911 LIBCFS_HAVE_NS_TO_TIMESPEC64
1913 LIBCFS_HLIST_ADD_AFTER
1916 LIBCFS_KTIME_GET_REAL_TS64
1917 LIBCFS_KTIME_GET_REAL_SECONDS
1918 LIBCFS_KTIME_GET_REAL_NS
1919 LIBCFS_KTIME_TO_TIMESPEC64
1920 LIBCFS_TIMESPEC64_SUB
1921 LIBCFS_TIMESPEC64_TO_KTIME
1923 LIBCFS_KTIME_GET_SECONDS
1926 LIBCFS_KTIME_MS_DELTA
1928 LIBCFS_KERNEL_PARAM_LOCK
1930 LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
1932 LIBCFS_KSTRTOBOOL_FROM_USER
1933 LIBCFS_NETLINK_CALLBACK_START
1935 LIBCFS_CRYPTO_HASH_HELPERS
1936 LIBCFS_EXPORT_KSET_FIND_OBJ
1937 LIBCFS_RHASHTABLE_REPLACE
1939 LIBCFS_BROKEN_HASH_64
1940 LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
1941 LIBCFS_GET_USER_PAGES_6ARG
1944 LIBCFS_RHASHTABLE_INSERT_FAST
1945 LIBCFS_RHASHTABLE_WALK_INIT_3ARG
1947 LIBCFS_RHASHTABLE_LOOKUP
1949 LIBCFS_STACKTRACE_OPS
1951 LIBCFS_GET_USER_PAGES_GUP_FLAGS
1952 LIBCFS_RHASHTABLE_WALK_ENTER
1954 LIBCFS_HOTPLUG_STATE_MACHINE
1957 LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
1958 LIBCFS_SCHED_HEADERS
1960 LIBCFS_RHT_BUCKET_VAR
1962 LIBCFS_HAVE_PROCESSOR_HEADER
1963 LIBCFS_HAVE_WAIT_BIT_HEADER
1964 LIBCFS_MEMALLOC_NORECLAIM
1966 LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
1967 LIBCFS_CPUS_READ_LOCK
1971 LIBCFS_WAIT_QUEUE_ENTRY
1972 LIBCFS_WAIT_BIT_QUEUE_ENTRY_EXISTS
1975 LIBCFS_NEW_KERNEL_WRITE
1976 LIBCFS_NEW_KERNEL_READ
1977 LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1979 LIBCFS_LOCKDEP_IS_HELD
1982 LIBCFS_WAIT_VAR_EVENT
1985 LIBCFS_CLEAR_AND_WAKE_UP_BIT
1987 LIBCFS_TCP_SOCK_SET_NODELAY
1988 LIBCFS_TCP_SOCK_SET_KEEPIDLE
1990 LIBCFS_XARRAY_SUPPORT
1991 LIBCFS_NL_DUMP_EXT_ACK
1993 LIBCFS_HAVE_IOV_ITER_TYPE
1995 LIBCFS_MM_TOTALRAM_PAGES_FUNC
1996 LIBCFS_GET_REQUEST_KEY_AUTH
1998 LIBCFS_LOOKUP_USER_KEY
1999 LIBCFS_FORCE_SIG_WITH_TASK
2000 LIBCFS_CACHE_DETAIL_WRITERS
2002 LIBCFS_GENL_DUMPIT_INFO
2004 LIBCFS_KALLSYMS_LOOKUP
2005 LIBCFS_TCP_SOCK_SET_QUICKACK
2006 LIBCFS_TCP_SOCK_SET_KEEPINTVL
2007 LIBCFS_TCP_SOCK_SET_KEEPCNT
2009 LIBCFS_HAVE_MMAP_LOCK
2010 LIBCFS_KERNEL_SETSOCKOPT
2011 LIBCFS_VMALLOC_2ARGS
2012 LIBCFS_HAVE_NR_UNSTABLE_NFS
2013 LIBCFS_SEC_RELEASE_SECCTX
2015 LIBCFS_HAVE_KFREE_SENSITIVE
2016 LIBCFS_HAVE_CRYPTO_SHA2_HEADER
2017 LIBCFS_HAVE_LIST_CMP_FUNC_T
2019 LIBCFS_HAVE_CIPHER_HEADER
2021 LIBCFS_HAVE_PANIC_NOTIFIER_HEADER
2023 LIBCFS_PARAM_SET_UINT_MINMAX
2024 LIBCFS_LINUX_BLK_INTEGRITY_HEADER
2025 ]) # LIBCFS_PROG_LINUX
2028 # LIBCFS_PATH_DEFAULTS
2030 # default paths for installed files
2032 AC_DEFUN([LIBCFS_PATH_DEFAULTS], [
2033 ]) # LIBCFS_PATH_DEFAULTS
2038 # other configure checks
2040 AC_DEFUN([LIBCFS_CONFIGURE], [
2041 AC_MSG_NOTICE([LibCFS core checks
2042 ==============================================================================])
2044 # libcfs/libcfs/util/nidstrings.c
2045 AC_CHECK_HEADERS([netdb.h asm/types.h endian.h])
2046 AC_CHECK_FUNCS([gethostbyname])
2048 # -------- Check for required packages --------------
2050 AC_MSG_NOTICE([LibCFS required packages checks
2051 ==============================================================================])
2053 AC_MSG_CHECKING([whether to enable readline support])
2054 AC_ARG_ENABLE(readline,
2055 AC_HELP_STRING([--disable-readline],
2056 [disable readline support]),
2057 [], [enable_readline="yes"])
2058 AC_MSG_RESULT([$enable_readline])
2061 AS_IF([test "x$enable_readline" = xyes], [
2062 AC_CHECK_LIB([readline], [readline], [
2063 LIBREADLINE="-lreadline"
2064 AC_DEFINE(HAVE_LIBREADLINE, 1,
2065 [readline library is available])
2068 AC_SUBST(LIBREADLINE)
2070 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
2071 AC_ARG_ENABLE([libpthread],
2072 AC_HELP_STRING([--disable-libpthread],
2073 [disable libpthread]),
2074 [], [enable_libpthread="yes"])
2075 AC_MSG_RESULT([$enable_libpthread])
2078 AS_IF([test "x$enable_libpthread" = xyes], [
2079 AC_CHECK_LIB([pthread], [pthread_create], [
2080 PTHREAD_LIBS="-lpthread"
2081 AC_DEFINE([HAVE_LIBPTHREAD], 1,
2082 [use libpthread for libcfs library])
2085 AC_MSG_WARN([Using libpthread for libcfs library is disabled explicitly])
2087 AC_SUBST(PTHREAD_LIBS)
2088 ]) # LIBCFS_CONFIGURE
2091 # LIBCFS_CONFIG_FILES
2093 # files that should be generated with AC_OUTPUT
2095 AC_DEFUN([LIBCFS_CONFIG_FILES], [
2099 libcfs/autoconf/Makefile
2100 libcfs/include/Makefile
2101 libcfs/include/libcfs/Makefile
2102 libcfs/include/uapi/Makefile
2103 libcfs/include/libcfs/linux/Makefile
2104 libcfs/include/libcfs/util/Makefile
2105 libcfs/include/libcfs/crypto/Makefile
2106 libcfs/include/uapi/linux/Makefile
2107 libcfs/libcfs/Makefile
2108 libcfs/libcfs/autoMakefile
2109 libcfs/libcfs/linux/Makefile
2110 libcfs/libcfs/util/Makefile
2111 libcfs/libcfs/crypto/Makefile
2113 ]) # LIBCFS_CONFIG_FILES