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 # LIBCFS_IOV_ITER_HAS_TYPE
202 # kernel 3.15-rc4 commit 71d8e532b1549a478e6a6a8a44f309d050294d00
203 # start adding the tag to iov_iter
205 AC_DEFUN([LIBCFS_IOV_ITER_HAS_TYPE], [
206 tmp_flags="$EXTRA_KCFLAGS"
207 EXTRA_KCFLAGS="-Werror"
208 LB_CHECK_COMPILE([if iov_iter has member type],
209 iov_iter_has_type_member, [
210 #include <linux/uio.h>
212 struct iov_iter iter = { .type = ITER_KVEC };
215 AC_DEFINE(HAVE_IOV_ITER_HAS_TYPE_MEMBER, 1,
216 [if iov_iter has member type])
218 EXTRA_KCFLAGS="$tmp_flags"
219 ]) # LIBCFS_IOV_ITER_HAS_TYPE
222 # LIBCFS_HAVE_NS_TO_TIMESPEC64
224 # Kernel version 4.16-rc3 commit a84d1169164b274f13b97a23ff235c000efe3b49
225 # introduced struct __kernel_old_timeval
227 AC_DEFUN([LIBCFS_HAVE_NS_TO_TIMESPEC64],[
228 LB_CHECK_COMPILE([does 'ns_to_timespec64()' exist],
229 kernel_old_timeval, [
230 #include <linux/time.h>
232 struct timespec64 kts;
234 kts = ns_to_timespec64(0);
236 AC_DEFINE(HAVE_NS_TO_TIMESPEC64, 1,
237 [ns_to_timespec64() is available])
239 ]) # LIBCFS_HAVE_NS_TO_TIMESPEC64
242 # Kernel version 3.17 changed hlist_add_after to
245 AC_DEFUN([LIBCFS_HLIST_ADD_AFTER],[
246 LB_CHECK_COMPILE([does function 'hlist_add_after' exist],
248 #include <linux/list.h>
250 hlist_add_after(NULL, NULL);
252 AC_DEFINE(HAVE_HLIST_ADD_AFTER, 1,
253 [hlist_add_after is available])
255 ]) # LIBCFS_HLIST_ADD_AFTER
258 # Kernel version 3.17 introduced struct timespec64
260 AC_DEFUN([LIBCFS_TIMESPEC64],[
261 LB_CHECK_COMPILE([does 'struct timespec64' exist],
263 #include <linux/time.h>
265 struct timespec64 ts;
270 AC_DEFINE(HAVE_TIMESPEC64, 1,
271 ['struct timespec64' is available])
273 ]) # LIBCFS_TIMESPEC64
276 # Kernel version 3.17 introduced ktime_get_real_ts64
278 AC_DEFUN([LIBCFS_KTIME_GET_REAL_TS64],[
279 LB_CHECK_COMPILE([does function 'ktime_get_real_ts64' exist],
280 ktime_get_real_ts64, [
281 #include <linux/ktime.h>
283 struct timespec64 *ts = NULL;
285 ktime_get_real_ts64(ts);
287 AC_DEFINE(HAVE_KTIME_GET_REAL_TS64, 1,
288 ['ktime_get_real_ts64' is available])
290 ]) # LIBCFS_KTIME_GET_REAL_TS64
293 # Kernel version 3.17 introduced ktime_get_real_seconds
295 AC_DEFUN([LIBCFS_KTIME_GET_REAL_SECONDS],[
296 LB_CHECK_COMPILE([does function 'ktime_get_real_seconds' exist],
297 ktime_get_real_seconds, [
298 #include <linux/hrtimer.h>
299 #include <linux/ktime.h>
303 now = ktime_get_real_seconds();
305 AC_DEFINE(HAVE_KTIME_GET_REAL_SECONDS, 1,
306 ['ktime_get_real_seconds' is available])
308 ]) # LIBCFS_KTIME_GET_REAL_SECONDS
311 # Kernel version 3.17 created ktime_get_ns wrapper
313 AC_DEFUN([LIBCFS_KTIME_GET_NS],[
314 LB_CHECK_COMPILE([does function 'ktime_get_ns' exist],
316 #include <linux/hrtimer.h>
317 #include <linux/ktime.h>
321 nanoseconds = ktime_get_ns();
323 AC_DEFINE(NEED_KTIME_GET_NS, 1,
324 ['ktime_get_ns' is not available])
326 ]) # LIBCFS_KTIME_GET_NS
329 # Kernel version 3.17 created ktime_get_real_ns wrapper
331 AC_DEFUN([LIBCFS_KTIME_GET_REAL_NS],[
332 LB_CHECK_COMPILE([does function 'ktime_get_real_ns' exist],
334 #include <linux/hrtimer.h>
335 #include <linux/ktime.h>
339 nanoseconds = ktime_get_real_ns();
341 AC_DEFINE(NEED_KTIME_GET_REAL_NS, 1,
342 ['ktime_get_real_ns' is not available])
344 ]) # LIBCFS_KTIME_GET_REAL_NS
347 # Kernel version 3.17 introduced ktime_to_timespec64
349 AC_DEFUN([LIBCFS_KTIME_TO_TIMESPEC64],[
350 LB_CHECK_COMPILE([does function 'ktime_to_timespec64' exist],
351 ktime_to_timespec64, [
352 #include <linux/hrtimer.h>
353 #include <linux/ktime.h>
355 ktime_t now = ktime_set(0, 0);
356 struct timespec64 ts;
358 ts = ktime_to_timespec64(now);
360 AC_DEFINE(HAVE_KTIME_TO_TIMESPEC64, 1,
361 ['ktime_to_timespec64' is available])
363 ]) # LIBCFS_KTIME_TO_TIMESPEC64
366 # Kernel version 3.17 introduced timespec64_sub
368 AC_DEFUN([LIBCFS_TIMESPEC64_SUB],[
369 LB_CHECK_COMPILE([does function 'timespec64_sub' exist],
371 #include <linux/time.h>
373 struct timespec64 later = { }, earlier = { }, diff;
375 diff = timespec64_sub(later, earlier);
377 AC_DEFINE(HAVE_TIMESPEC64_SUB, 1,
378 ['timespec64_sub' is available])
380 ]) # LIBCFS_TIMESPEC64_SUB
383 # Kernel version 3.17 introduced timespec64_to_ktime
385 AC_DEFUN([LIBCFS_TIMESPEC64_TO_KTIME],[
386 LB_CHECK_COMPILE([does function 'timespec64_to_ktime' exist],
387 timespec64_to_ktime, [
388 #include <linux/ktime.h>
390 struct timespec64 ts;
393 now = timespec64_to_ktime(ts);
395 AC_DEFINE(HAVE_TIMESPEC64_TO_KTIME, 1,
396 ['timespec64_to_ktime' is available])
398 ]) # LIBCFS_TIMESPEC64_TO_KTIME
401 # Kernel version 3.19 introduced ktime_get_seconds
403 AC_DEFUN([LIBCFS_KTIME_GET_SECONDS],[
404 LB_CHECK_COMPILE([does function 'ktime_get_seconds' exist],
406 #include <linux/ktime.h>
410 now = ktime_get_seconds();
412 AC_DEFINE(HAVE_KTIME_GET_SECONDS, 1,
413 ['ktime_get_seconds' is available])
415 ]) # LIBCFS_KTIME_GET_SECONDS
418 # Kernel version 4.0 commit 41fbf3b39d5eca01527338b4d0ee15ee1ae1023c
419 # introduced the helper function ktime_ms_delta.
421 AC_DEFUN([LIBCFS_KTIME_MS_DELTA],[
422 LB_CHECK_COMPILE([does function 'ktime_ms_delta' exist],
424 #include <linux/ktime.h>
426 ktime_t start = ktime_set(0, 0);
429 ktime_ms_delta(start, end);
431 AC_DEFINE(HAVE_KTIME_MS_DELTA, 1,
432 ['ktime_ms_delta' is available])
434 ]) # LIBCFS_KTIME_MS_DELTA
437 # Kernel version 4.1 commit b51d23e4e9fea6f264d39535c2a62d1f51e7ccc3
438 # create per module locks which added kernel_param_[un]lock(). Older
439 # kernels you have to use __kernel_param_[un]lock(). In that case its
440 # a global lock for all modules but that is okay since its a rare event.
442 AC_DEFUN([LIBCFS_KERNEL_PARAM_LOCK],[
443 LB_CHECK_COMPILE([does function 'kernel_param_[un]lock' exist],
445 #include <linux/moduleparam.h>
447 kernel_param_lock(NULL);
448 kernel_param_unlock(NULL);
450 AC_DEFINE(HAVE_KERNEL_PARAM_LOCK, 1,
451 ['kernel_param_[un]lock' is available])
453 ]) # LIBCFS_KERNEL_PARAM_LOCK
456 # Kernel version 4.2 changed topology_thread_cpumask
457 # to topology_sibling_cpumask
459 AC_DEFUN([LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK],[
460 LB_CHECK_COMPILE([does function 'topology_sibling_cpumask' exist],
461 topology_sibling_cpumask, [
462 #include <linux/topology.h>
464 const struct cpumask *mask;
466 mask = topology_sibling_cpumask(0);
468 AC_DEFINE(HAVE_TOPOLOGY_SIBLING_CPUMASK, 1,
469 [topology_sibling_cpumask is available])
471 ]) # LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
474 # Kernel version 4.4 commit ef951599074ba4fad2d0efa0a977129b41e6d203
475 # introduced kstrtobool and kstrtobool_from_user.
477 AC_DEFUN([LIBCFS_KSTRTOBOOL_FROM_USER], [
478 LB_CHECK_COMPILE([if Linux kernel has 'kstrtobool_from_user'],
479 kstrtobool_from_user, [
480 #include <linux/kernel.h>
483 return kstrtobool_from_user(NULL, 0, &result);
485 AC_DEFINE(HAVE_KSTRTOBOOL_FROM_USER, 1,
486 [kernel has kstrtobool_from_user])
488 ]) # LIBCFS_KSTRTOBOOL_FROM_USER
491 # LIBCFS_NETLINK_CALLBACK_START
493 # Kernel version 4.4-rc3 commit fc9e50f5a5a4e1fa9ba2756f745a13e693cf6a06
494 # added a start function callback for struct netlink_callback
496 AC_DEFUN([LIBCFS_NETLINK_CALLBACK_START], [
497 LB_CHECK_COMPILE([if struct genl_ops has start callback],
499 #include <net/genetlink.h>
505 AC_DEFINE(HAVE_NETLINK_CALLBACK_START, 1,
506 [struct genl_ops has 'start' callback])
508 ]) # LIBCFS_NETLINK_CALLBACK_START
511 # Kernel version 4.5-rc1 commit d12481bc58fba89427565f8592e88446ec084a24
512 # added crypto hash helpers
514 AC_DEFUN([LIBCFS_CRYPTO_HASH_HELPERS], [
515 LB_CHECK_COMPILE([does crypto hash helper functions exist],
516 crypto_hash_helpers, [
517 #include <crypto/hash.h>
519 crypto_ahash_alg_name(NULL);
520 crypto_ahash_driver_name(NULL);
522 AC_DEFINE(HAVE_CRYPTO_HASH_HELPERS, 1,
523 [crypto hash helper functions are available])
525 ]) # LIBCFS_CRYPTO_HASH_HELPERS
528 # Kernel version 4.5-rc1 commit 3502cad73c4bbf8f6365d539e814159275252c59
529 # introduced rhashtable_replace_fast
531 AC_DEFUN([LIBCFS_RHASHTABLE_REPLACE], [
532 LB_CHECK_COMPILE([if 'rhashtable_replace_fast' exists],
533 rhashtable_replace_fast, [
534 #include <linux/rhashtable.h>
536 const struct rhashtable_params params = { 0 };
538 rhashtable_replace_fast(NULL, NULL, NULL, params);
540 AC_DEFINE(HAVE_RHASHTABLE_REPLACE, 1,
541 [rhashtable_replace_fast() is available])
543 ]) # LIBCFS_RHASHTABLE_REPLACE
546 # Kernel version 4.5-rc3 commit 2fe829aca9d7bed5fd6b49c6a1452e5e486b6cc3dd
547 # made kset_find_obj() exportable to modules
549 AC_DEFUN([LIBCFS_EXPORT_KSET_FIND_OBJ], [
550 LB_CHECK_EXPORT([kset_find_obj], [lib/kobject.c],
551 [AC_DEFINE(HAVE_KSET_FIND_OBJ, 1,
552 [kset_find_obj is exported by the kernel])])
553 ]) # LIBCFS_EXPORT_KSET_FIND_OBJ
556 # Kernel version 4.6+ commit ef703f49a6c5b909a85149bb6625c4ed0d697186
557 # fixed the brokenness of hash_64(). The fix removed GOLDEN_RATIO_PRIME_64
558 # since it was a poor prime value.
560 AC_DEFUN([LIBCFS_BROKEN_HASH_64], [
561 LB_CHECK_COMPILE([kernel has fixed hash_64()],
563 #include <linux/hash.h>
565 int tmp = GOLDEN_RATIO_PRIME_64;
567 AC_DEFINE(HAVE_BROKEN_HASH_64, 1, [kernel hash_64() is broken])
569 ]) # LIBCFS_BROKEN_HASH_64
572 # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
574 # linux 4.6 kernel changed stacktrace_ops address to return an int
576 AC_DEFUN([LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT], [
577 LB_CHECK_COMPILE([if 'struct stacktrace_ops' address function returns an int],
578 stacktrace_ops_address_return_int, [
579 #include <asm/stacktrace.h>
583 rc = ((struct stacktrace_ops *)0)->address(NULL, 0, 0);
585 AC_DEFINE(STACKTRACE_OPS_ADDRESS_RETURN_INT, 1,
586 ['struct stacktrace_ops' address function returns an int])
588 ]) # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
591 # Kernel version 4.6 removed both struct task_struct and struct mm_struct
592 # arguments to get_user_pages
594 AC_DEFUN([LIBCFS_GET_USER_PAGES_6ARG], [
595 LB_CHECK_COMPILE([if 'get_user_pages()' takes 6 arguments],
596 get_user_pages_6arg, [
597 #include <linux/mm.h>
601 rc = get_user_pages(0, 0, 0, 0, NULL, NULL);
603 AC_DEFINE(HAVE_GET_USER_PAGES_6ARG, 1,
604 [get_user_pages takes 6 arguments])
606 ]) # LIBCFS_GET_USER_PAGES_6ARG
611 # 4.6 kernel created stringhash.h which moved stuff out of dcache.h
612 # commit f4bcbe792b8f434e32487cff9d9e30ab45a3ce02
614 AC_DEFUN([LIBCFS_STRINGHASH], [
615 LB_CHECK_LINUX_HEADER([linux/stringhash.h], [
616 AC_DEFINE(HAVE_STRINGHASH, 1,
617 [stringhash.h is present])])
618 ]) # LIBCFS_STRINGHASH
621 # LIBCFS_RHASHTABLE_INSERT_FAST
623 # 4.7+ kernel commit 5ca8cc5bf11faed257c762018aea9106d529232f
624 # changed __rhashtable_insert_fast to support the new function
625 # rhashtable_lookup_get_insert_key().
627 AC_DEFUN([LIBCFS_RHASHTABLE_INSERT_FAST], [
628 tmp_flags="$EXTRA_KCFLAGS"
629 EXTRA_KCFLAGS="-Werror"
630 LB_CHECK_COMPILE([if internal '__rhashtable_insert_fast()' returns int],
631 rhashtable_insert_fast, [
632 #include <linux/rhashtable.h>
634 const struct rhashtable_params params = { 0 };
637 rc = __rhashtable_insert_fast(NULL, NULL, NULL, params);
639 AC_DEFINE(HAVE_HASHTABLE_INSERT_FAST_RETURN_INT, 1,
640 ['__rhashtable_insert_fast()' returns int])
642 EXTRA_KCFLAGS="$tmp_flags"
643 ]) # LIBCFS_RHASHTABLE_INSERT_FAST
646 # Kernel version 4.7-rc1 commit 8f6fd83c6c5ec66a4a70c728535ddcdfef4f3697
647 # added 3rd arg to rhashtable_walk_init
649 AC_DEFUN([LIBCFS_RHASHTABLE_WALK_INIT_3ARG], [
650 LB_CHECK_COMPILE([if 'rhashtable_walk_init' has 3 args],
651 rhashtable_walk_init, [
652 #include <linux/gfp.h>
653 #include <linux/rhashtable.h>
655 rhashtable_walk_init(NULL, NULL, GFP_KERNEL);
657 AC_DEFINE(HAVE_3ARG_RHASHTABLE_WALK_INIT, 1,
658 [rhashtable_walk_init() has 3 args])
660 ]) # LIBCFS_RHASHTABLE_WALK_INIT_3ARG
663 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
664 # introduced rhashtable_lookup
666 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP], [
667 LB_CHECK_COMPILE([if 'rhashtable_lookup' exist],
669 #include <linux/rhashtable.h>
671 const struct rhashtable_params params = { 0 };
674 ret = rhashtable_lookup(NULL, NULL, params);
676 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP, 1,
677 [rhashtable_lookup() is available])
679 ]) # LIBCFS_RHASHTABLE_LOOKUP
683 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
684 # created the rhlist interface to allow inserting duplicate objects
685 # into the same table.
687 AC_DEFUN([LIBCFS_RHLTABLE], [
688 LB_CHECK_COMPILE([does 'struct rhltable' exist],
690 #include <linux/rhashtable.h>
692 struct rhltable *hlt;
694 rhltable_destroy(hlt);
696 AC_DEFINE(HAVE_RHLTABLE, 1,
697 [struct rhltable exist])
702 # LIBCFS_STACKTRACE_OPS
704 # Kernel version 4.8 commit c8fe4609827aedc9c4b45de80e7cdc8ccfa8541b
705 # removed both struct stacktrace_ops and dump_trace() function
707 AC_DEFUN([LIBCFS_STACKTRACE_OPS], [
708 LB_CHECK_COMPILE([if 'struct stacktrace_ops' exists],
712 #include <asm/stacktrace.h>
714 struct stacktrace_ops ops;
717 AC_DEFINE(HAVE_STACKTRACE_OPS, 1,
718 [struct stacktrace_ops exists])
720 ]) # LIBCFS_STACKTRACE_OPS
723 # Kernel version 4.9-rc1 commit 246779dd090bd1b74d2652b3a6ca7759f593b27a
724 # introduced rhashtable_walk_enter
726 AC_DEFUN([LIBCFS_RHASHTABLE_WALK_ENTER], [
727 LB_CHECK_COMPILE([if 'rhashtable_walk_enter' exists],
728 rhashtable_walk_enter, [
729 #include <linux/rhashtable.h>
731 rhashtable_walk_enter(NULL, NULL);
733 AC_DEFINE(HAVE_RHASHTABLE_WALK_ENTER, 1,
734 [rhashtable_walk_enter() is available])
736 ]) # LIBCFS_RHASHTABLE_WALK_ENTER
739 # Kernel version 4.9 commit 768ae309a96103ed02eb1e111e838c87854d8b51
740 # mm: replace get_user_pages() write/force parameters with gup_flags
742 AC_DEFUN([LIBCFS_GET_USER_PAGES_GUP_FLAGS], [
743 LB_CHECK_COMPILE([if 'get_user_pages()' takes gup_flags in arguments],
744 get_user_pages_gup_flags, [
745 #include <linux/mm.h>
748 rc = get_user_pages(0, 0, FOLL_WRITE, NULL, NULL);
750 AC_DEFINE(HAVE_GET_USER_PAGES_GUP_FLAGS, 1,
751 [get_user_pages takes gup_flags in arguments])
753 ]) # LIBCFS_GET_USER_PAGES_GUP_FLAGS
756 # Kernel version 4.10 commit 7b737965b33188bd3dbb44e938535c4006d97fbb
757 # libcfs: Convert to hotplug state machine
759 AC_DEFUN([LIBCFS_HOTPLUG_STATE_MACHINE], [
760 LB_CHECK_COMPILE([if libcfs supports CPU hotplug state machine],
761 cpu_hotplug_state_machine, [
762 #include <linux/cpuhotplug.h>
764 cpuhp_remove_state(CPUHP_LUSTRE_CFS_DEAD);
766 AC_DEFINE(HAVE_HOTPLUG_STATE_MACHINE, 1,
767 [hotplug state machine is supported])
769 ]) # LIBCFS_HOTPLUG_STATE_MACHINE
772 # Kernel version 4.10-rc3 commit f405df5de3170c00e5c54f8b7cf4766044a032ba
773 # introduced refcount_t which is atomic_t plus over flow guards.
775 AC_DEFUN([LIBCFS_REFCOUNT_T], [
776 tmp_flags="$EXTRA_KCFLAGS"
777 EXTRA_KCFLAGS="-Werror"
778 LB_CHECK_LINUX_HEADER([linux/refcount.h], [
779 AC_DEFINE(HAVE_REFCOUNT_T, 1,
780 [refcount_t is supported])
782 EXTRA_KCFLAGS="$tmp_flags"
783 ]) # LIBCFS_REFCOUNT_T
786 # Kernel version 4.12 commit 499118e966f1d2150bd66647c8932343c4e9a0b8
787 # introduce memalloc_noreclaim_{save,restore}
789 AC_DEFUN([LIBCFS_MEMALLOC_NORECLAIM], [
790 LB_CHECK_COMPILE([if memalloc_noreclaim_{save,restore} exist],
791 memalloc_noreclaim, [
792 #include <linux/sched/mm.h>
794 int flag = memalloc_noreclaim_save();
795 memalloc_noreclaim_restore(flag);
797 AC_DEFINE(HAVE_MEMALLOC_RECLAIM, 1,
798 [memalloc_noreclaim_{save,restore}() is supported])
800 ]) # LIBCFS_MEMALLOC_NORECLAIM
803 # LIBCFS_SCHED_HEADERS
805 # 4.11 has broken up sched.h into more headers.
807 AC_DEFUN([LIBCFS_SCHED_HEADERS], [
808 LB_CHECK_LINUX_HEADER([linux/sched/signal.h], [
809 AC_DEFINE(HAVE_SCHED_HEADERS, 1,
810 [linux/sched header directory exist])])
811 ]) # LIBCFS_SCHED_HEADERS
814 # Kernel version 4.11-rc1 commit 2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e
815 # introduce kref_read
817 AC_DEFUN([LIBCFS_KREF_READ], [
818 LB_CHECK_COMPILE([if 'kref_read' exists],
820 #include <linux/kref.h>
824 AC_DEFINE(HAVE_KREF_READ, 1,
825 [kref_read() is available])
827 ]) # LIBCFS_KREF_READ
830 # Kernel version 4.11-rc1 commit da20420f83ea0fbcf3d03afda08d971ea1d8a356
831 # introduced rht_bucket_var
833 AC_DEFUN([LIBCFS_RHT_BUCKET_VAR], [
834 LB_CHECK_COMPILE([if 'rht_bucket_var' exists],
836 #include <linux/rhashtable.h>
839 rht_bucket_var(NULL, 0);
841 AC_DEFINE(HAVE_RHT_BUCKET_VAR, 1,
842 [rht_bucket_var() is available])
844 ]) # LIBCFS_RHT_BUCKET_VAR
847 # Kernel version 4.11-rc5 commit fceb6435e85298f747fee938415057af837f5a8a
848 # began the enhanchement of Netlink with extended ACK struct for advanced
849 # error handling. By commit 7ab606d1609dd6dfeae9c8ad0a8a4e051d831e46 we
850 # had full support for this new feature.
852 AC_DEFUN([LIBCFS_NL_EXT_ACK], [
853 LB_CHECK_COMPILE([if Netlink supports netlink_ext_ack],
855 #include <net/genetlink.h>
857 struct genl_info info;
861 AC_DEFINE(HAVE_NL_PARSE_WITH_EXT_ACK, 1,
862 [netlink_ext_ack is an argument to nla_parse type function])
864 ]) # LIBCFS_NL_EXT_ACK
867 # Kernel version 4.11 commit f9fe1c12d126f9887441fa5bb165046f30ddd4b5
868 # introduced rhashtable_lookup_get_insert_fast
870 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST], [
871 LB_CHECK_COMPILE([if 'rhashtable_lookup_get_insert_fast' exist],
872 rhashtable_lookup_get_insert_fast, [
873 #include <linux/rhashtable.h>
875 const struct rhashtable_params params = { 0 };
878 ret = rhashtable_lookup_get_insert_fast(NULL, NULL, params);
880 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP_GET_INSERT_FAST, 1,
881 [rhashtable_lookup_get_insert_fast() is available])
883 ]) # LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
886 # Kernel version 4.12-rc2 8f553c498e1772cccb39a114da4a498d22992758
887 # provide proper CPU hotplug locking
889 AC_DEFUN([LIBCFS_CPUS_READ_LOCK], [
890 LB_CHECK_COMPILE([if 'cpus_read_[un]lock' exist],
892 #include <linux/cpu.h>
897 AC_DEFINE(HAVE_CPUS_READ_LOCK, 1, ['cpus_read_lock' exist])
899 ]) # LIBCFS_CPUS_READ_LOCK
902 # Kernel version 4.12-rc3 f9727a17db9bab71ddae91f74f11a8a2f9a0ece6
903 # renamed uuid_be to uuid_t
905 AC_DEFUN([LIBCFS_UUID_T], [
906 LB_CHECK_COMPILE([if 'uuid_t' exist],
908 #include <linux/uuid.h>
912 memset(uuid.b, 0, 16);
914 AC_DEFINE(HAVE_UUID_T, 1, ['uuid_t' exist])
919 # Kernel version 4.12-rc3 commit fd851a3cdc196bfc1d229b5f22369069af532bf8
920 # introduce processor.h
922 AC_DEFUN([LIBCFS_HAVE_PROCESSOR_HEADER], [
923 tmp_flags="$EXTRA_KCFLAGS"
924 EXTRA_KCFLAGS="-Werror"
925 LB_CHECK_LINUX_HEADER([linux/processor.h], [
926 AC_DEFINE(HAVE_PROCESSOR_H, 1,
927 [processor.h is present])
929 EXTRA_KCFLAGS="$tmp_flags"
930 ]) # LIBCFS_HAVE_PROCESSOR_HEADER
933 # Kernel verison 4.12-rc6 commit 5dd43ce2f69d42a71dcacdb13d17d8c0ac1fe8f7
936 AC_DEFUN([LIBCFS_HAVE_WAIT_BIT_HEADER], [
937 LB_CHECK_LINUX_HEADER([linux/wait_bit.h], [
938 AC_DEFINE(HAVE_WAIT_BIT_HEADER_H, 1,
939 [wait_bit.h is present])])
940 ]) # LIBCFS_HAVE_WAIT_BIT_HEADER
943 # Kernel version 4.12-rc6 commmit 2055da97389a605c8a00d163d40903afbe413921
945 # struct wait_queue_head::task_list => ::head
946 # struct wait_queue_entry::task_list => ::entry
948 AC_DEFUN([LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME], [
949 LB_CHECK_COMPILE([if linux wait_queue_head list_head is named head],
950 wait_queue_task_list, [
951 #include <linux/wait.h>
955 INIT_LIST_HEAD(&e.head);
957 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY_LIST, 1,
958 [linux wait_queue_head_t list_head is name head])
960 ]) # LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
965 # Kernel version 4.13-rc1 commit 2cf0c8b3e6942ecafe6ebb1a6d0328a81641bf39
966 # created nla_strdup(). This is needed since push strings can be
969 AC_DEFUN([LIBCFS_NLA_STRDUP], [
970 LB_CHECK_COMPILE([if 'nla_strdup()' exists],
972 #include <net/netlink.h>
974 char *tmp = nla_strdup(NULL, GFP_KERNEL);
976 AC_DEFINE(HAVE_NLA_STRDUP, 1,
977 ['nla_strdup' is available])
979 ]) # LIBCFS_NLA_STRDUP
982 # LIBCFS_WAIT_QUEUE_ENTRY
984 # Kernel version 4.13 ac6424b981bce1c4bc55675c6ce11bfe1bbfa64f
985 # Rename wait_queue_t => wait_queue_entry_t
987 AC_DEFUN([LIBCFS_WAIT_QUEUE_ENTRY], [
988 LB_CHECK_COMPILE([if 'wait_queue_entry_t' exists],
990 #include <linux/wait.h>
992 wait_queue_entry_t e;
996 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY, 1,
997 ['wait_queue_entry_t' is available])
999 ]) # LIBCFS_WAIT_QUEUE_ENTRY
1002 # LIBCFS_NEW_KERNEL_WRITE
1004 # Kernel version 4.14 e13ec939e96b13e664bb6cee361cc976a0ee621a
1005 # changed kernel_write prototype to make is plug compatible
1006 # with the unexported vfs_write()
1008 AC_DEFUN([LIBCFS_NEW_KERNEL_WRITE], [
1009 tmp_flags="$EXTRA_KCFLAGS"
1010 EXTRA_KCFLAGS="-Werror"
1011 LB_CHECK_COMPILE([if 'kernel_write' matches other read/write helpers],
1012 kernel_write_match, [
1013 #include <linux/fs.h>
1015 const void *buf = NULL;
1017 return kernel_write(NULL, buf, 0, &pos);
1019 AC_DEFINE(HAVE_NEW_KERNEL_WRITE, 1,
1020 ['kernel_write' aligns with read/write helpers])
1022 EXTRA_KCFLAGS="$tmp_flags"
1023 ]) # LIBCFS_NEW_KERNEL_WRITE
1026 # LIBCFS_MM_TOTALRAM_PAGES_FUNC
1028 # kernel 5.0 commit ca79b0c211af63fa3276f0e3fd7dd9ada2439839
1029 # mm: convert totalram_pages and totalhigh_pages variables to atomic
1031 AC_DEFUN([LIBCFS_MM_TOTALRAM_PAGES_FUNC], [
1032 tmp_flags="$EXTRA_KCFLAGS"
1033 EXTRA_KCFLAGS="-Werror"
1034 LB_CHECK_COMPILE([if totalram_pages is a function],
1036 #include <linux/mm.h>
1038 totalram_pages_inc();
1040 AC_DEFINE(HAVE_TOTALRAM_PAGES_AS_FUNC, 1,
1041 [if totalram_pages is a function])
1043 EXTRA_KCFLAGS="$tmp_flags"
1044 ]) # LIBCFS_MM_TOTALRAM_PAGES_FUNC
1047 # LIBCFS_NEW_KERNEL_READ
1049 # 4.14 commit bdd1d2d3d251c65b74ac4493e08db18971c09240 changed
1050 # the signature of kernel_read to match other read/write helpers
1051 # and place offset last.
1053 AC_DEFUN([LIBCFS_NEW_KERNEL_READ], [
1054 tmp_flags="$EXTRA_KCFLAGS"
1055 EXTRA_KCFLAGS="-Werror"
1056 LB_CHECK_COMPILE([if 'kernel_read()' has loff_t *pos as last parameter],
1058 #include <linux/fs.h>
1061 kernel_read(NULL, NULL, 0, &pos);
1063 AC_DEFINE(HAVE_KERNEL_READ_LAST_POSP, 1,
1064 [kernel_read() signature ends with loff_t *pos])
1066 EXTRA_KCFLAGS="$tmp_flags"
1067 ]) # LIBCFS_NEW_KERNEL_READ
1070 # LIBCFS_DEFINE_TIMER
1072 # Kernel version 4.14 commit 1d27e3e2252ba9d949ca82fbdb73cde102cb2067
1073 # remove expires and data arguments from DEFINE_TIMER. Also the callback
1074 # when from using unsigned long argument to using struct timer_list pointer.
1076 AC_DEFUN([LIBCFS_DEFINE_TIMER], [
1077 LB_CHECK_COMPILE([if DEFINE_TIMER takes only 2 arguments],
1079 #include <linux/timer.h>
1081 static DEFINE_TIMER(my_timer, NULL);
1083 AC_DEFINE(HAVE_NEW_DEFINE_TIMER, 1,
1084 [DEFINE_TIMER uses only 2 arguements])
1086 ]) # LIBCFS_DEFINE_TIMER
1089 # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1091 # Kernel 2.6.27 commit 8594698ebddeef5443b7da8258ae33b3eaca61d5
1092 # exported save_stack_trace_tsk for x86.
1093 # Kernel 2.6.27 commit 01f4b8b8b8db09b88be7df7e51192e4e678b69d3
1094 # exported save_stack_trace_tsk for powerpc
1095 # Kernel 4.13 commit e27c7fa015d61c8be6a2c32b2144aad2ae6ec975
1096 # exported save_stack_trace_tsk for arm64
1097 # Kernel 4.14 commit 9a3dc3186fc3795e076a4122da9e0258651a9631
1098 # exported save_stack_trace_tsk for arm
1100 AC_DEFUN([LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK], [
1101 LB_CHECK_EXPORT([save_stack_trace_tsk], [arch/$SUBARCH/kernel/stacktrace.c],
1102 [AC_DEFINE(HAVE_SAVE_STACK_TRACE_TSK, 1,
1103 [save_stack_trace_tsk is exported])])
1104 ]) # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1107 # LIBCFS_LOCKDEP_IS_HELD
1109 # Kernel v4.15-rc8-106-g08f36ff64234
1110 # lockdep: Make lockdep checking constant
1112 AC_DEFUN([LIBCFS_LOCKDEP_IS_HELD], [
1113 tmp_flags="$EXTRA_KCFLAGS"
1114 EXTRA_KCFLAGS="-Werror"
1115 LB_CHECK_COMPILE([if 'lockdep_is_held()' uses const argument],
1117 #include <linux/lockdep.h>
1119 #ifdef CONFIG_LOCKDEP
1120 const struct spinlock *lock = NULL;
1122 lockdep_is_held(lock);
1125 AC_DEFINE(NEED_LOCKDEP_IS_HELD_DISCARD_CONST, 1,
1126 [lockdep_is_held() argument is const])
1128 EXTRA_KCFLAGS="$tmp_flags"
1129 ]) # LIBCFS_LOCKDEP_IS_HELD
1132 # LIBCFS_TIMER_SETUP
1134 # Kernel version 4.15 commit e99e88a9d2b067465adaa9c111ada99a041bef9a
1135 # setup_timer() was replaced by timer_setup(), where the callback
1136 # argument is the structure already holding the struct timer_list.
1138 AC_DEFUN([LIBCFS_TIMER_SETUP], [
1139 LB_CHECK_COMPILE([if setup_timer has been replaced with timer_setup],
1141 #include <linux/timer.h>
1143 timer_setup(NULL, NULL, 0);
1145 AC_DEFINE(HAVE_TIMER_SETUP, 1,
1146 [timer_setup has replaced setup_timer])
1148 ]) # LIBCFS_TIMER_SETUP
1151 # LIBCFS_WAIT_VAR_EVENT
1153 # Kernel version 4.16-rc4 commit 6b2bb7265f0b62605e8caee3613449ed0db270b9
1154 # added wait_var_event()
1156 AC_DEFUN([LIBCFS_WAIT_VAR_EVENT], [
1157 LB_CHECK_COMPILE([if 'wait_var_event' exist],
1159 #ifdef HAVE_WAIT_BIT_HEADER_H
1160 #include <linux/wait_bit.h>
1162 #include <linux/wait.h>
1166 AC_DEFINE(HAVE_WAIT_VAR_EVENT, 1,
1167 ['wait_var_event' is available])
1169 ]) # LIBCFS_WAIT_VAR_EVENT
1172 # LIBCFS_BITMAP_ALLOC
1174 # Kernel version 4.17 commit c42b65e363ce97a828f81b59033c3558f8fa7f70
1175 # added bitmap memory allocation handling.
1177 AC_DEFUN([LIBCFS_BITMAP_ALLOC], [
1178 LB_CHECK_COMPILE([if Linux bitmap memory management exist],
1180 #include <linux/bitmap.h>
1182 unsigned long *map = bitmap_alloc(1, GFP_KERNEL);
1184 AC_DEFINE(HAVE_BITMAP_ALLOC, 1,
1185 [Linux bitmap can be allocated])
1187 ]) # LIBCFS_BITMAP_ALLOC
1190 # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1192 # Kernel version 4.17-rc2 commit 8236b0ae31c837d2b3a2565c5f8d77f637e824cc
1193 # added clear_and_wake_up_bit()
1195 AC_DEFUN([LIBCFS_CLEAR_AND_WAKE_UP_BIT], [
1196 LB_CHECK_COMPILE([if 'clear_and_wake_up_bit' exist],
1197 clear_and_wake_up_bit, [
1198 #ifdef HAVE_WAIT_BIT_HEADER_H
1199 #include <linux/wait_bit.h>
1201 #include <linux/wait.h>
1203 clear_and_wake_up_bit(0, NULL);
1205 AC_DEFINE(HAVE_CLEAR_AND_WAKE_UP_BIT, 1,
1206 ['clear_and_wake_up_bit' is available])
1208 ]) # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1211 # LIBCFS_TCP_SOCK_SET_NODELAY
1213 # kernel 4.18.0-293.el8
1214 # tcp_sock_set_nodelay() was added
1215 AC_DEFUN([LIBCFS_TCP_SOCK_SET_NODELAY], [
1216 tmp_flags="$EXTRA_KCFLAGS"
1217 EXTRA_KCFLAGS="-Werror"
1218 LB_CHECK_COMPILE([if 'tcp_sock_set_nodelay()' exists],
1219 tcp_sock_set_nodelay_exists, [
1220 #include <linux/tcp.h>
1222 tcp_sock_set_nodelay(NULL);
1224 AC_DEFINE(HAVE_TCP_SOCK_SET_NODELAY, 1,
1225 ['tcp_sock_set_nodelay()' exists])
1227 EXTRA_KCFLAGS="$tmp_flags"
1228 ]) # LIBCFS_TCP_SOCK_SET_NODELAY
1231 # LIBCFS_TCP_SOCK_SET_KEEPIDLE
1233 # kernel 4.18.0-293.el8
1234 # tcp_sock_set_keepidle() was added
1235 AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPIDLE], [
1236 tmp_flags="$EXTRA_KCFLAGS"
1237 EXTRA_KCFLAGS="-Werror"
1238 LB_CHECK_COMPILE([if 'tcp_sock_set_keepidle()' exists],
1239 tcp_sock_set_keepidle_exists, [
1240 #include <linux/tcp.h>
1242 tcp_sock_set_keepidle(NULL, 0);
1244 AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPIDLE, 1,
1245 ['tcp_sock_set_keepidle()' exists])
1247 EXTRA_KCFLAGS="$tmp_flags"
1248 ]) # LIBCFS_TCP_SOCK_SET_KEEPIDLE
1251 # LIBCFS_TCP_SOCK_SET_QUICKACK
1252 # kernel v5.7-rc6-2504-gddd061b8daed
1253 # tcp: add tcp_sock_set_quickack
1255 AC_DEFUN([LIBCFS_TCP_SOCK_SET_QUICKACK], [
1256 tmp_flags="$EXTRA_KCFLAGS"
1257 EXTRA_KCFLAGS="-Werror"
1258 LB_CHECK_COMPILE([if 'tcp_sock_set_quickack()' exists],
1259 tcp_sock_set_quickack_exists, [
1260 #include <linux/tcp.h>
1262 tcp_sock_set_quickack(NULL, 0);
1264 AC_DEFINE(HAVE_TCP_SOCK_SET_QUICKACK, 1,
1265 ['tcp_sock_set_quickack()' exists])
1267 EXTRA_KCFLAGS="$tmp_flags"
1268 ]) # LIBCFS_TCP_SOCK_SET_QUICKACK
1271 # LIBCFS_TCP_SOCK_SET_KEEPINTVL
1272 # v5.7-rc6-2508-gd41ecaac903c
1273 # tcp: add tcp_sock_set_keepintvl
1275 AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPINTVL], [
1276 tmp_flags="$EXTRA_KCFLAGS"
1277 EXTRA_KCFLAGS="-Werror"
1278 LB_CHECK_COMPILE([if 'tcp_sock_set_keepintvl()' exists],
1279 tcp_sock_set_keepintvl_exists, [
1280 #include <linux/tcp.h>
1282 tcp_sock_set_keepintvl(NULL, 0);
1284 AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPINTVL, 1,
1285 ['tcp_sock_set_keepintvl()' exists])
1287 EXTRA_KCFLAGS="$tmp_flags"
1288 ]) # LIBCFS_TCP_SOCK_SET_KEEPINTVL
1291 # LIBCFS_TCP_SOCK_SET_KEEPCNT
1292 # v5.7-rc6-2509-g480aeb9639d6
1293 # tcp: add tcp_sock_set_keepcnt
1295 AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPCNT], [
1296 tmp_flags="$EXTRA_KCFLAGS"
1297 EXTRA_KCFLAGS="-Werror"
1298 LB_CHECK_COMPILE([if 'tcp_sock_set_keepcnt()' exists],
1299 tcp_sock_set_keepcnt_exists, [
1300 #include <linux/tcp.h>
1302 tcp_sock_set_keepcnt(NULL, 0);
1304 AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPCNT, 1,
1305 ['tcp_sock_set_keepcnt()' exists])
1307 EXTRA_KCFLAGS="$tmp_flags"
1308 ]) # LIBCFS_TCP_SOCK_SET_KEEPCNT
1311 # LIBCFS_XARRAY_SUPPORT
1313 # 4.19-rc5 kernel commit 3159f943aafdbacb2f94c38fdaadabf2bbde2a14
1314 # replaced the radix tree implementation with Xarrays. This change
1315 # introduced functionaly needed for general Xarray support
1317 AC_DEFUN([LIBCFS_XARRAY_SUPPORT], [
1318 tmp_flags="$EXTRA_KCFLAGS"
1319 EXTRA_KCFLAGS="-Werror"
1320 LB_CHECK_COMPILE([if page cache uses Xarray],
1322 #include <linux/xarray.h>
1326 AC_DEFINE(HAVE_XARRAY_SUPPORT, 1,
1327 [kernel Xarray implementation lacks 'xa_is_value'])
1329 EXTRA_KCFLAGS="$tmp_flags"
1330 ]) # LIBCFS_XARRAY_SUPPORT
1333 # Kernel version 4.19-rc6 commit 4a19edb60d0203cd5bf95a8b46ea8f63fd41194c
1334 # added extended ACK handling to Netlink dump handlers
1336 AC_DEFUN([LIBCFS_NL_DUMP_EXT_ACK], [
1337 LB_CHECK_COMPILE([if Netlink dump handlers support ext_ack],
1338 netlink_dump_ext_ack, [
1339 #include <net/netlink.h>
1341 struct netlink_callback *cb = NULL;
1344 AC_DEFINE(HAVE_NL_DUMP_WITH_EXT_ACK, 1,
1345 [netlink_ext_ack is handled for Netlink dump handlers])
1347 ]) # LIBCFS_NL_DUMP_EXT_ACK
1350 # LIBCFS_HAVE_IOV_ITER_TYPE
1352 # kernel 4.20 commit 00e23707442a75b404392cef1405ab4fd498de6b
1353 # iov_iter: Use accessor functions to access an iterator's type and direction.
1355 AC_DEFUN([LIBCFS_HAVE_IOV_ITER_TYPE], [
1356 tmp_flags="$EXTRA_KCFLAGS"
1357 EXTRA_KCFLAGS="-Werror"
1358 LB_CHECK_COMPILE([if iov_iter_type exists],
1359 macro_iov_iter_type_exists, [
1360 #include <linux/uio.h>
1362 struct iov_iter iter = { .type = ITER_KVEC };
1363 enum iter_type type = iov_iter_type(&iter);
1366 AC_DEFINE(HAVE_IOV_ITER_TYPE, 1,
1367 [if iov_iter_type exists])
1369 EXTRA_KCFLAGS="$tmp_flags"
1370 ]) # LIBCFS_HAVE_IOV_ITER_TYPE
1373 # LIBCFS_GET_REQUEST_KEY_AUTH
1375 # kernel 5.0 commit 822ad64d7e46a8e2c8b8a796738d7b657cbb146d
1376 # keys: Fix dependency loop between construction record and auth key
1378 # Added <keys/request_key_auth-type.h> and get_request_key_auth()
1379 # which was propagated to stable
1381 AC_DEFUN([LIBCFS_GET_REQUEST_KEY_AUTH], [
1382 tmp_flags="$EXTRA_KCFLAGS"
1383 EXTRA_KCFLAGS="-Werror"
1384 LB_CHECK_COMPILE([if get_request_key_auth() is available],
1385 get_request_key_auth_exported, [
1386 #include <linux/key.h>
1387 #include <linux/keyctl.h>
1388 #include <keys/request_key_auth-type.h>
1391 const struct key *key = NULL;
1392 struct request_key_auth *rka = get_request_key_auth(key);
1394 ring = key_get(rka->dest_keyring);
1396 AC_DEFINE(HAVE_GET_REQUEST_KEY_AUTH, 1,
1397 [get_request_key_auth() is available])
1399 EXTRA_KCFLAGS="$tmp_flags"
1400 ]) # LIBCFS_GET_REQUEST_KEY_AUTH
1403 # LIBCFS_LOOKUP_USER_KEY
1405 # kernel 5.3 commit 3cf5d076fb4d48979f382bc9452765bf8b79e740
1406 # signal: Remove task parameter from force_sig
1408 AC_DEFUN([LIBCFS_LOOKUP_USER_KEY], [
1409 tmp_flags="$EXTRA_KCFLAGS"
1410 EXTRA_KCFLAGS="-Werror"
1411 LB_CHECK_COMPILE([if lookup_user_key() is available],
1412 lookup_user_key_exported, [
1413 #include <linux/key.h>
1414 #include <linux/keyctl.h>
1416 lookup_user_key(KEY_SPEC_USER_KEYRING, 0, 0);
1418 AC_DEFINE(HAVE_LOOKUP_USER_KEY, 1,
1419 [lookup_user_key() is available])
1421 EXTRA_KCFLAGS="$tmp_flags"
1422 ]) # LIBCFS_LOOKUP_USER_KEY
1425 # LIBCFS_FORCE_SIG_WITH_TASK
1427 # kernel 5.3 commit 3cf5d076fb4d48979f382bc9452765bf8b79e740
1428 # signal: Remove task parameter from force_sig
1430 AC_DEFUN([LIBCFS_FORCE_SIG_WITH_TASK], [
1431 tmp_flags="$EXTRA_KCFLAGS"
1432 EXTRA_KCFLAGS="-Werror"
1433 LB_CHECK_COMPILE([if force_sig has task parameter],
1434 force_sig_with_task, [
1435 #include <linux/sched/signal.h>
1437 force_sig(SIGINT, NULL);
1439 AC_DEFINE(HAVE_FORCE_SIG_WITH_TASK, 1,
1440 [force_sig() has task parameter])
1442 EXTRA_KCFLAGS="$tmp_flags"
1443 ]) # LIBCFS_FORCE_SIG_WITH_TASK
1446 # LIBCFS_CACHE_DETAIL_WRITERS
1448 # kernel v5.3-rc2-1-g64a38e840ce5
1449 # SUNRPC: Track writers of the 'channel' file to improve cache_listeners_exist
1451 AC_DEFUN([LIBCFS_CACHE_DETAIL_WRITERS], [
1452 tmp_flags="$EXTRA_KCFLAGS"
1453 EXTRA_KCFLAGS="-Werror"
1454 LB_CHECK_COMPILE([if struct cache_detail has writers],
1455 cache_detail_writers_atomic, [
1456 #include <linux/sunrpc/cache.h>
1458 static struct cache_detail rsi_cache;
1460 atomic_set(&rsi_cache.writers, 0);
1462 AC_DEFINE(HAVE_CACHE_DETAIL_WRITERS, 1,
1463 [struct cache_detail has writers])
1465 EXTRA_KCFLAGS="$tmp_flags"
1466 ]) # LIBCFS_CACHE_DETAIL_WRITERS
1469 # LIBCFS_KALLSYMS_LOOKUP
1471 # kernel v5.6-11591-g0bd476e6c671
1472 # kallsyms: unexport kallsyms_lookup_name() and kallsyms_on_each_symbol()
1473 AC_DEFUN([LIBCFS_KALLSYMS_LOOKUP], [
1474 LB_CHECK_EXPORT([kallsyms_lookup_name], [kernel/kallsyms.c],
1475 [AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1,
1476 [kallsyms_lookup_name is exported by kernel])])
1477 ]) # LIBCFS_KALLSYMS_LOOKUP
1480 # v5.5-8862-gd56c0d45f0e2
1481 # proc: decouple proc from VFS with "struct proc_ops"
1483 AC_DEFUN([LIBCFS_SRC_HAVE_PROC_OPS], [
1484 LB2_LINUX_TEST_SRC([proc_ops], [
1485 #include <linux/proc_fs.h>
1487 static struct proc_ops *my_proc;
1489 my_proc->proc_lseek = NULL;
1491 ]) # LIBCFS_SRC_HAVE_PROC_OPS
1492 AC_DEFUN([LIBCFS_HAVE_PROC_OPS], [
1493 AC_MSG_CHECKING([if struct proc_ops exists])
1494 LB2_LINUX_TEST_RESULT([proc_ops], [
1495 AC_DEFINE(HAVE_PROC_OPS, 1,
1496 [struct proc_ops exists])
1501 ]) # LIBCFS_HAVE_PROC_OPS
1504 # LIBCFS_VMALLOC_2ARGS
1506 # kernel v5.8-rc1~201^2~19
1507 # mm: remove the pgprot argument to __vmalloc
1508 AC_DEFUN([LIBCFS_VMALLOC_2ARGS], [
1509 LB_CHECK_COMPILE([if __vmalloc has 2 args],
1511 #include <linux/vmalloc.h>
1515 AC_DEFINE(HAVE_VMALLOC_2ARGS, 1,
1516 [__vmalloc only takes 2 args.])
1518 ]) # LIBCFS_VMALLOC_2ARGS
1521 # LIBCFS_HAVE_NR_UNSTABLE_NFS
1523 # kernel v5.8-rc1~201^2~75
1524 # mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead
1526 AC_DEFUN([LIBCFS_HAVE_NR_UNSTABLE_NFS], [
1527 tmp_flags="$EXTRA_KCFLAGS"
1528 EXTRA_KCFLAGS="-Werror"
1529 LB_CHECK_COMPILE([if NR_UNSTABLE_NFS still in use],
1530 nr_unstable_nfs_exists, [
1531 #include <linux/mm.h>
1535 i = NR_UNSTABLE_NFS;
1537 AC_DEFINE(HAVE_NR_UNSTABLE_NFS, 1,
1538 [NR_UNSTABLE_NFS is still in use.])
1540 EXTRA_KCFLAGS="$tmp_flags"
1541 ]) # LIBCFS_HAVE_NR_UNSTABLE_NFS
1544 # LIBCFS_HAVE_MMAP_LOCK
1546 # kernel v5.8-rc1~83^2~24
1547 # mmap locking API: rename mmap_sem to mmap_lock
1549 AC_DEFUN([LIBCFS_HAVE_MMAP_LOCK], [
1550 LB_CHECK_COMPILE([if mmap_lock API is available],
1552 #include <linux/mm.h>
1554 mmap_write_lock(NULL);
1556 AC_DEFINE(HAVE_MMAP_LOCK, 1,
1557 [mmap_lock API is available.])
1559 ]) # LIBCFS_HAVE_MMAP_LOCK
1562 # LIBCFS_KERNEL_SETSOCKOPT
1564 # kernel v5.8-rc1~165^2~59^2
1565 # net: remove kernel_setsockopt
1566 AC_DEFUN([LIBCFS_KERNEL_SETSOCKOPT], [
1567 tmp_flags="$EXTRA_KCFLAGS"
1568 EXTRA_KCFLAGS="-Werror"
1569 LB_CHECK_COMPILE([if kernel_setsockopt still in use],
1570 kernel_setsockopt_exists, [
1571 #include <linux/net.h>
1573 kernel_setsockopt(NULL, 0, 0, NULL, 0);
1575 AC_DEFINE(HAVE_KERNEL_SETSOCKOPT, 1,
1576 [kernel_setsockopt still in use])
1578 EXTRA_KCFLAGS="$tmp_flags"
1579 ]) # LIBCFS_KERNEL_SETSOCKOPT
1582 # LIBCFS_SEC_RELEASE_SECCTX
1584 # kernel linux-hwe-5.8 (5.8.0-22.23~20.04.1)
1585 # LSM: Use lsmcontext in security_release_secctx
1586 AC_DEFUN([LIBCFS_SEC_RELEASE_SECCTX], [
1587 LB_CHECK_COMPILE([if security_release_secctx has 1 arg],
1588 security_release_secctx_1arg, [
1589 #include <linux/security.h>
1591 security_release_secctx(NULL);
1593 AC_DEFINE(HAVE_SEC_RELEASE_SECCTX_1ARG, 1,
1594 [security_release_secctx has 1 arg.])
1596 ]) # LIBCFS_SEC_RELEASE_SECCTX
1599 # LIBCFS_HAVE_KFREE_SENSITIVE
1601 # kernel v5.10-rc1~3
1602 # mm: remove kzfree() compatibility definition
1604 AC_DEFUN([LIBCFS_HAVE_KFREE_SENSITIVE], [
1605 LB_CHECK_COMPILE([if kfree_sensitive() is available],
1606 kfree_sensitive_exists, [
1607 #include <linux/slab.h>
1610 kfree_sensitive(NULL);
1612 AC_DEFINE(HAVE_KFREE_SENSITIVE, 1,
1613 [kfree_sensitive() is available.])
1615 EXTRA_KCFLAGS="$tmp_flags"
1616 ]) # LIBCFS_HAVE_KFREE_SENSITIVE
1619 # LIBCFS_HAVE_CRYPTO_SHA2_HEADER
1621 # Kernel v5.10-rc1-114-ga24d22b225ce
1622 # crypto: sha - split sha.h into sha1.h and sha2.h
1624 AC_DEFUN([LIBCFS_HAVE_CRYPTO_SHA2_HEADER], [
1625 LB_CHECK_LINUX_HEADER([crypto/sha2.h], [
1626 AC_DEFINE(HAVE_CRYPTO_SHA2_HEADER, 1,
1627 [crypto/sha2.h is present])])
1628 ]) # LIBCFS_HAVE_CRYPTO_SHA2_HEADER
1630 AC_DEFUN([LIBCFS_PROG_LINUX_SRC], [
1631 LIBCFS_SRC_HAVE_PROC_OPS
1633 AC_MSG_CHECKING([for available kernel interfaces to libcfs])
1634 LB2_LINUX_TEST_COMPILE_ALL([libcfs])
1635 AC_MSG_RESULT([done])
1637 AC_DEFUN([LIBCFS_PROG_LINUX_RESULTS], [
1639 LIBCFS_HAVE_PROC_OPS
1645 # LibCFS linux kernel checks
1647 AC_DEFUN([LIBCFS_PROG_LINUX], [
1648 AC_MSG_NOTICE([LibCFS kernel checks
1649 ==============================================================================])
1650 LIBCFS_CONFIG_PANIC_DUMPLOG
1653 LIBCFS_KTIME_GET_TS64
1655 LIBCFS_PREPARE_TO_WAIT_EVENT
1656 LIBCFS_KERNEL_PARAM_OPS
1660 LIBCFS_KTIME_COMPARE
1661 LIBCFS_SHRINKER_COUNT
1663 LIBCFS_IOV_ITER_HAS_TYPE
1665 LIBCFS_HAVE_NS_TO_TIMESPEC64
1667 LIBCFS_HLIST_ADD_AFTER
1670 LIBCFS_KTIME_GET_REAL_TS64
1671 LIBCFS_KTIME_GET_REAL_SECONDS
1672 LIBCFS_KTIME_GET_REAL_NS
1673 LIBCFS_KTIME_TO_TIMESPEC64
1674 LIBCFS_TIMESPEC64_SUB
1675 LIBCFS_TIMESPEC64_TO_KTIME
1677 LIBCFS_KTIME_GET_SECONDS
1679 LIBCFS_KTIME_MS_DELTA
1681 LIBCFS_KERNEL_PARAM_LOCK
1683 LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
1685 LIBCFS_KSTRTOBOOL_FROM_USER
1686 LIBCFS_NETLINK_CALLBACK_START
1688 LIBCFS_CRYPTO_HASH_HELPERS
1689 LIBCFS_EXPORT_KSET_FIND_OBJ
1690 LIBCFS_RHASHTABLE_REPLACE
1692 LIBCFS_BROKEN_HASH_64
1693 LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
1694 LIBCFS_GET_USER_PAGES_6ARG
1697 LIBCFS_RHASHTABLE_INSERT_FAST
1698 LIBCFS_RHASHTABLE_WALK_INIT_3ARG
1700 LIBCFS_RHASHTABLE_LOOKUP
1702 LIBCFS_STACKTRACE_OPS
1704 LIBCFS_GET_USER_PAGES_GUP_FLAGS
1705 LIBCFS_RHASHTABLE_WALK_ENTER
1707 LIBCFS_HOTPLUG_STATE_MACHINE
1710 LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
1711 LIBCFS_SCHED_HEADERS
1713 LIBCFS_RHT_BUCKET_VAR
1715 LIBCFS_HAVE_PROCESSOR_HEADER
1716 LIBCFS_HAVE_WAIT_BIT_HEADER
1717 LIBCFS_MEMALLOC_NORECLAIM
1719 LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
1720 LIBCFS_CPUS_READ_LOCK
1724 LIBCFS_WAIT_QUEUE_ENTRY
1727 LIBCFS_NEW_KERNEL_WRITE
1728 LIBCFS_NEW_KERNEL_READ
1729 LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1731 LIBCFS_LOCKDEP_IS_HELD
1734 LIBCFS_WAIT_VAR_EVENT
1737 LIBCFS_CLEAR_AND_WAKE_UP_BIT
1739 LIBCFS_TCP_SOCK_SET_NODELAY
1740 LIBCFS_TCP_SOCK_SET_KEEPIDLE
1742 LIBCFS_XARRAY_SUPPORT
1743 LIBCFS_NL_DUMP_EXT_ACK
1745 LIBCFS_HAVE_IOV_ITER_TYPE
1747 LIBCFS_MM_TOTALRAM_PAGES_FUNC
1748 LIBCFS_GET_REQUEST_KEY_AUTH
1750 LIBCFS_LOOKUP_USER_KEY
1751 LIBCFS_FORCE_SIG_WITH_TASK
1752 LIBCFS_CACHE_DETAIL_WRITERS
1753 LIBCFS_HAVE_NR_UNSTABLE_NFS
1755 LIBCFS_KALLSYMS_LOOKUP
1756 LIBCFS_TCP_SOCK_SET_QUICKACK
1757 LIBCFS_TCP_SOCK_SET_KEEPINTVL
1758 LIBCFS_TCP_SOCK_SET_KEEPCNT
1760 LIBCFS_HAVE_MMAP_LOCK
1761 LIBCFS_KERNEL_SETSOCKOPT
1762 LIBCFS_VMALLOC_2ARGS
1763 LIBCFS_SEC_RELEASE_SECCTX
1765 LIBCFS_HAVE_KFREE_SENSITIVE
1766 LIBCFS_HAVE_CRYPTO_SHA2_HEADER
1767 ]) # LIBCFS_PROG_LINUX
1770 # LIBCFS_PATH_DEFAULTS
1772 # default paths for installed files
1774 AC_DEFUN([LIBCFS_PATH_DEFAULTS], [
1775 ]) # LIBCFS_PATH_DEFAULTS
1780 # other configure checks
1782 AC_DEFUN([LIBCFS_CONFIGURE], [
1783 AC_MSG_NOTICE([LibCFS core checks
1784 ==============================================================================])
1786 # libcfs/libcfs/util/nidstrings.c
1787 AC_CHECK_HEADERS([netdb.h asm/types.h endian.h])
1788 AC_CHECK_FUNCS([gethostbyname])
1790 # -------- Check for required packages --------------
1792 AC_MSG_NOTICE([LibCFS required packages checks
1793 ==============================================================================])
1795 AC_MSG_CHECKING([whether to enable readline support])
1796 AC_ARG_ENABLE(readline,
1797 AC_HELP_STRING([--disable-readline],
1798 [disable readline support]),
1799 [], [enable_readline="yes"])
1800 AC_MSG_RESULT([$enable_readline])
1803 AS_IF([test "x$enable_readline" = xyes], [
1804 AC_CHECK_LIB([readline], [readline], [
1805 LIBREADLINE="-lreadline"
1806 AC_DEFINE(HAVE_LIBREADLINE, 1,
1807 [readline library is available])
1810 AC_SUBST(LIBREADLINE)
1812 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
1813 AC_ARG_ENABLE([libpthread],
1814 AC_HELP_STRING([--disable-libpthread],
1815 [disable libpthread]),
1816 [], [enable_libpthread="yes"])
1817 AC_MSG_RESULT([$enable_libpthread])
1820 AS_IF([test "x$enable_libpthread" = xyes], [
1821 AC_CHECK_LIB([pthread], [pthread_create], [
1822 PTHREAD_LIBS="-lpthread"
1823 AC_DEFINE([HAVE_LIBPTHREAD], 1,
1824 [use libpthread for libcfs library])
1827 AC_MSG_WARN([Using libpthread for libcfs library is disabled explicitly])
1829 AC_SUBST(PTHREAD_LIBS)
1830 ]) # LIBCFS_CONFIGURE
1833 # LIBCFS_CONFIG_FILES
1835 # files that should be generated with AC_OUTPUT
1837 AC_DEFUN([LIBCFS_CONFIG_FILES], [
1841 libcfs/autoconf/Makefile
1842 libcfs/include/Makefile
1843 libcfs/include/libcfs/Makefile
1844 libcfs/include/uapi/Makefile
1845 libcfs/include/libcfs/linux/Makefile
1846 libcfs/include/libcfs/util/Makefile
1847 libcfs/include/libcfs/crypto/Makefile
1848 libcfs/include/uapi/linux/Makefile
1849 libcfs/libcfs/Makefile
1850 libcfs/libcfs/autoMakefile
1851 libcfs/libcfs/linux/Makefile
1852 libcfs/libcfs/util/Makefile
1853 libcfs/libcfs/crypto/Makefile
1855 ]) # LIBCFS_CONFIG_FILES