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 # Kernel version 4.5-rc1 commit d12481bc58fba89427565f8592e88446ec084a24
492 # added crypto hash helpers
494 AC_DEFUN([LIBCFS_CRYPTO_HASH_HELPERS], [
495 LB_CHECK_COMPILE([does crypto hash helper functions exist],
496 crypto_hash_helpers, [
497 #include <crypto/hash.h>
499 crypto_ahash_alg_name(NULL);
500 crypto_ahash_driver_name(NULL);
502 AC_DEFINE(HAVE_CRYPTO_HASH_HELPERS, 1,
503 [crypto hash helper functions are available])
505 ]) # LIBCFS_CRYPTO_HASH_HELPERS
508 # Kernel version 4.5-rc1 commit 3502cad73c4bbf8f6365d539e814159275252c59
509 # introduced rhashtable_replace_fast
511 AC_DEFUN([LIBCFS_RHASHTABLE_REPLACE], [
512 LB_CHECK_COMPILE([if 'rhashtable_replace_fast' exists],
513 rhashtable_replace_fast, [
514 #include <linux/rhashtable.h>
516 const struct rhashtable_params params = { 0 };
518 rhashtable_replace_fast(NULL, NULL, NULL, params);
520 AC_DEFINE(HAVE_RHASHTABLE_REPLACE, 1,
521 [rhashtable_replace_fast() is available])
523 ]) # LIBCFS_RHASHTABLE_REPLACE
526 # Kernel version 4.5-rc3 commit 2fe829aca9d7bed5fd6b49c6a1452e5e486b6cc3dd
527 # made kset_find_obj() exportable to modules
529 AC_DEFUN([LIBCFS_EXPORT_KSET_FIND_OBJ], [
530 LB_CHECK_EXPORT([kset_find_obj], [lib/kobject.c],
531 [AC_DEFINE(HAVE_KSET_FIND_OBJ, 1,
532 [kset_find_obj is exported by the kernel])])
533 ]) # LIBCFS_EXPORT_KSET_FIND_OBJ
536 # Kernel version 4.6+ commit ef703f49a6c5b909a85149bb6625c4ed0d697186
537 # fixed the brokenness of hash_64(). The fix removed GOLDEN_RATIO_PRIME_64
538 # since it was a poor prime value.
540 AC_DEFUN([LIBCFS_BROKEN_HASH_64], [
541 LB_CHECK_COMPILE([kernel has fixed hash_64()],
543 #include <linux/hash.h>
545 int tmp = GOLDEN_RATIO_PRIME_64;
547 AC_DEFINE(HAVE_BROKEN_HASH_64, 1, [kernel hash_64() is broken])
549 ]) # LIBCFS_BROKEN_HASH_64
552 # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
554 # linux 4.6 kernel changed stacktrace_ops address to return an int
556 AC_DEFUN([LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT], [
557 LB_CHECK_COMPILE([if 'struct stacktrace_ops' address function returns an int],
558 stacktrace_ops_address_return_int, [
559 #include <asm/stacktrace.h>
563 rc = ((struct stacktrace_ops *)0)->address(NULL, 0, 0);
565 AC_DEFINE(STACKTRACE_OPS_ADDRESS_RETURN_INT, 1,
566 ['struct stacktrace_ops' address function returns an int])
568 ]) # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
571 # Kernel version 4.6 removed both struct task_struct and struct mm_struct
572 # arguments to get_user_pages
574 AC_DEFUN([LIBCFS_GET_USER_PAGES_6ARG], [
575 LB_CHECK_COMPILE([if 'get_user_pages()' takes 6 arguments],
576 get_user_pages_6arg, [
577 #include <linux/mm.h>
581 rc = get_user_pages(0, 0, 0, 0, NULL, NULL);
583 AC_DEFINE(HAVE_GET_USER_PAGES_6ARG, 1,
584 [get_user_pages takes 6 arguments])
586 ]) # LIBCFS_GET_USER_PAGES_6ARG
591 # 4.6 kernel created stringhash.h which moved stuff out of dcache.h
592 # commit f4bcbe792b8f434e32487cff9d9e30ab45a3ce02
594 AC_DEFUN([LIBCFS_STRINGHASH], [
595 LB_CHECK_LINUX_HEADER([linux/stringhash.h], [
596 AC_DEFINE(HAVE_STRINGHASH, 1,
597 [stringhash.h is present])])
598 ]) # LIBCFS_STRINGHASH
601 # LIBCFS_RHASHTABLE_INSERT_FAST
603 # 4.7+ kernel commit 5ca8cc5bf11faed257c762018aea9106d529232f
604 # changed __rhashtable_insert_fast to support the new function
605 # rhashtable_lookup_get_insert_key().
607 AC_DEFUN([LIBCFS_RHASHTABLE_INSERT_FAST], [
608 tmp_flags="$EXTRA_KCFLAGS"
609 EXTRA_KCFLAGS="-Werror"
610 LB_CHECK_COMPILE([if internal '__rhashtable_insert_fast()' returns int],
611 rhashtable_insert_fast, [
612 #include <linux/rhashtable.h>
614 const struct rhashtable_params params = { 0 };
617 rc = __rhashtable_insert_fast(NULL, NULL, NULL, params);
619 AC_DEFINE(HAVE_HASHTABLE_INSERT_FAST_RETURN_INT, 1,
620 ['__rhashtable_insert_fast()' returns int])
622 EXTRA_KCFLAGS="$tmp_flags"
623 ]) # LIBCFS_RHASHTABLE_INSERT_FAST
626 # Kernel version 4.7-rc1 commit 8f6fd83c6c5ec66a4a70c728535ddcdfef4f3697
627 # added 3rd arg to rhashtable_walk_init
629 AC_DEFUN([LIBCFS_RHASHTABLE_WALK_INIT_3ARG], [
630 LB_CHECK_COMPILE([if 'rhashtable_walk_init' has 3 args],
631 rhashtable_walk_init, [
632 #include <linux/gfp.h>
633 #include <linux/rhashtable.h>
635 rhashtable_walk_init(NULL, NULL, GFP_KERNEL);
637 AC_DEFINE(HAVE_3ARG_RHASHTABLE_WALK_INIT, 1,
638 [rhashtable_walk_init() has 3 args])
640 ]) # LIBCFS_RHASHTABLE_REPLACE
643 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
644 # introduced rhashtable_lookup
646 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP], [
647 LB_CHECK_COMPILE([if 'rhashtable_lookup' exist],
649 #include <linux/rhashtable.h>
651 const struct rhashtable_params params = { 0 };
654 ret = rhashtable_lookup(NULL, NULL, params);
656 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP, 1,
657 [rhashtable_lookup() is available])
659 ]) # LIBCFS_RHASHTABLE_LOOKUP
663 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
664 # created the rhlist interface to allow inserting duplicate objects
665 # into the same table.
667 AC_DEFUN([LIBCFS_RHLTABLE], [
668 LB_CHECK_COMPILE([does 'struct rhltable' exist],
670 #include <linux/rhashtable.h>
672 struct rhltable *hlt;
674 rhltable_destroy(hlt);
676 AC_DEFINE(HAVE_RHLTABLE, 1,
677 [struct rhltable exist])
682 # LIBCFS_STACKTRACE_OPS
684 # Kernel version 4.8 commit c8fe4609827aedc9c4b45de80e7cdc8ccfa8541b
685 # removed both struct stacktrace_ops and dump_trace() function
687 AC_DEFUN([LIBCFS_STACKTRACE_OPS], [
688 LB_CHECK_COMPILE([if 'struct stacktrace_ops' exists],
692 #include <asm/stacktrace.h>
694 struct stacktrace_ops ops;
697 AC_DEFINE(HAVE_STACKTRACE_OPS, 1,
698 [struct stacktrace_ops exists])
700 ]) # LIBCFS_STACKTRACE_OPS
703 # Kernel version 4.9-rc1 commit 246779dd090bd1b74d2652b3a6ca7759f593b27a
704 # introduced rhashtable_walk_enter
706 AC_DEFUN([LIBCFS_RHASHTABLE_WALK_ENTER], [
707 LB_CHECK_COMPILE([if 'rhashtable_walk_enter' exists],
708 rhashtable_walk_enter, [
709 #include <linux/rhashtable.h>
711 rhashtable_walk_enter(NULL, NULL);
713 AC_DEFINE(HAVE_RHASHTABLE_WALK_ENTER, 1,
714 [rhashtable_walk_enter() is available])
716 ]) # LIBCFS_RHASHTABLE_REPLACE
719 # Kernel version 4.9 commit 768ae309a96103ed02eb1e111e838c87854d8b51
720 # mm: replace get_user_pages() write/force parameters with gup_flags
722 AC_DEFUN([LIBCFS_GET_USER_PAGES_GUP_FLAGS], [
723 LB_CHECK_COMPILE([if 'get_user_pages()' takes gup_flags in arguments],
724 get_user_pages_gup_flags, [
725 #include <linux/mm.h>
728 rc = get_user_pages(0, 0, FOLL_WRITE, NULL, NULL);
730 AC_DEFINE(HAVE_GET_USER_PAGES_GUP_FLAGS, 1,
731 [get_user_pages takes gup_flags in arguments])
733 ]) # LIBCFS_GET_USER_PAGES_GUP_FLAGS
736 # Kernel version 4.10 commit 7b737965b33188bd3dbb44e938535c4006d97fbb
737 # libcfs: Convert to hotplug state machine
739 AC_DEFUN([LIBCFS_HOTPLUG_STATE_MACHINE], [
740 LB_CHECK_COMPILE([if libcfs supports CPU hotplug state machine],
741 cpu_hotplug_state_machine, [
742 #include <linux/cpuhotplug.h>
744 cpuhp_remove_state(CPUHP_LUSTRE_CFS_DEAD);
746 AC_DEFINE(HAVE_HOTPLUG_STATE_MACHINE, 1,
747 [hotplug state machine is supported])
749 ]) # LIBCFS_HOTPLUG_STATE_MACHINE
752 # Kernel version 4.10-rc3 commit f405df5de3170c00e5c54f8b7cf4766044a032ba
753 # introduced refcount_t which is atomic_t plus over flow guards.
755 AC_DEFUN([LIBCFS_REFCOUNT_T], [
756 tmp_flags="$EXTRA_KCFLAGS"
757 EXTRA_KCFLAGS="-Werror"
758 LB_CHECK_LINUX_HEADER([linux/refcount.h], [
759 AC_DEFINE(HAVE_REFCOUNT_T, 1,
760 [refcount_t is supported])
762 EXTRA_KCFLAGS="$tmp_flags"
763 ]) # LIBCFS_REFCOUNT_T
766 # Kernel version 4.12 commit 499118e966f1d2150bd66647c8932343c4e9a0b8
767 # introduce memalloc_noreclaim_{save,restore}
769 AC_DEFUN([LIBCFS_MEMALLOC_NORECLAIM], [
770 LB_CHECK_COMPILE([if memalloc_noreclaim_{save,restore} exist],
771 memalloc_noreclaim, [
772 #include <linux/sched/mm.h>
774 int flag = memalloc_noreclaim_save();
775 memalloc_noreclaim_restore(flag);
777 AC_DEFINE(HAVE_MEMALLOC_RECLAIM, 1,
778 [memalloc_noreclaim_{save,restore}() is supported])
780 ]) # LIBCFS_MEMALLOC_NORECLAIM
783 # LIBCFS_SCHED_HEADERS
785 # 4.11 has broken up sched.h into more headers.
787 AC_DEFUN([LIBCFS_SCHED_HEADERS], [
788 LB_CHECK_LINUX_HEADER([linux/sched/signal.h], [
789 AC_DEFINE(HAVE_SCHED_HEADERS, 1,
790 [linux/sched header directory exist])])
791 ]) # LIBCFS_SCHED_HEADERS
794 # Kernel version 4.11-rc1 commit 2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e
795 # introduce kref_read
797 AC_DEFUN([LIBCFS_KREF_READ], [
798 LB_CHECK_COMPILE([if 'kref_read' exists],
800 #include <linux/kref.h>
804 AC_DEFINE(HAVE_KREF_READ, 1,
805 [kref_read() is available])
810 # Kernel version 4.11-rc1 commit da20420f83ea0fbcf3d03afda08d971ea1d8a356
811 # introduced rht_bucket_var
813 AC_DEFUN([LIBCFS_RHT_BUCKET_VAR], [
814 LB_CHECK_COMPILE([if 'rht_bucket_var' exists],
816 #include <linux/rhashtable.h>
819 rht_bucket_var(NULL, 0);
821 AC_DEFINE(HAVE_RHT_BUCKET_VAR, 1,
822 [rht_bucket_var() is available])
824 ]) # LIBCFS_RHT_BUCKET_VAR
827 # Kernel version 4.11 commit f9fe1c12d126f9887441fa5bb165046f30ddd4b5
828 # introduced rhashtable_lookup_get_insert_fast
830 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST], [
831 LB_CHECK_COMPILE([if 'rhashtable_lookup_get_insert_fast' exist],
832 rhashtable_lookup_get_insert_fast, [
833 #include <linux/rhashtable.h>
835 const struct rhashtable_params params = { 0 };
838 ret = rhashtable_lookup_get_insert_fast(NULL, NULL, params);
840 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP_GET_INSERT_FAST, 1,
841 [rhashtable_lookup_get_insert_fast() is available])
843 ]) # LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
846 # Kernel version 4.12-rc2 8f553c498e1772cccb39a114da4a498d22992758
847 # provide proper CPU hotplug locking
849 AC_DEFUN([LIBCFS_CPUS_READ_LOCK], [
850 LB_CHECK_COMPILE([if 'cpus_read_[un]lock' exist],
852 #include <linux/cpu.h>
857 AC_DEFINE(HAVE_CPUS_READ_LOCK, 1, ['cpus_read_lock' exist])
859 ]) # LIBCFS_CPUS_READ_LOCK
862 # Kernel version 4.12-rc3 f9727a17db9bab71ddae91f74f11a8a2f9a0ece6
863 # renamed uuid_be to uuid_t
865 AC_DEFUN([LIBCFS_UUID_T], [
866 LB_CHECK_COMPILE([if 'uuid_t' exist],
868 #include <linux/uuid.h>
872 memset(uuid.b, 0, 16);
874 AC_DEFINE(HAVE_UUID_T, 1, ['uuid_t' exist])
879 # Kernel version 4.12-rc3 commit fd851a3cdc196bfc1d229b5f22369069af532bf8
880 # introduce processor.h
882 AC_DEFUN([LIBCFS_HAVE_PROCESSOR_HEADER], [
883 tmp_flags="$EXTRA_KCFLAGS"
884 EXTRA_KCFLAGS="-Werror"
885 LB_CHECK_LINUX_HEADER([linux/processor.h], [
886 AC_DEFINE(HAVE_PROCESSOR_H, 1,
887 [processor.h is present])
889 EXTRA_KCFLAGS="$tmp_flags"
890 ]) # LIBCFS_HAVE_PROCESSOR_HEADER
893 # Kernel verison 4.12-rc6 commit 5dd43ce2f69d42a71dcacdb13d17d8c0ac1fe8f7
896 AC_DEFUN([LIBCFS_HAVE_WAIT_BIT_HEADER], [
897 LB_CHECK_LINUX_HEADER([linux/wait_bit.h], [
898 AC_DEFINE(HAVE_WAIT_BIT_HEADER_H, 1,
899 [wait_bit.h is present])])
900 ]) # LIBCFS_HAVE_WAIT_BIT_HEADER
903 # Kernel version 4.12-rc6 commmit 2055da97389a605c8a00d163d40903afbe413921
905 # struct wait_queue_head::task_list => ::head
906 # struct wait_queue_entry::task_list => ::entry
908 AC_DEFUN([LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME], [
909 LB_CHECK_COMPILE([if linux wait_queue_head list_head is named head],
910 wait_queue_task_list, [
911 #include <linux/wait.h>
915 INIT_LIST_HEAD(&e.head);
917 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY_LIST, 1,
918 [linux wait_queue_head_t list_head is name head])
920 ]) # LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
923 # LIBCFS_WAIT_QUEUE_ENTRY
925 # Kernel version 4.13 ac6424b981bce1c4bc55675c6ce11bfe1bbfa64f
926 # Rename wait_queue_t => wait_queue_entry_t
928 AC_DEFUN([LIBCFS_WAIT_QUEUE_ENTRY], [
929 LB_CHECK_COMPILE([if 'wait_queue_entry_t' exists],
931 #include <linux/wait.h>
933 wait_queue_entry_t e;
937 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY, 1,
938 ['wait_queue_entry_t' is available])
940 ]) # LIBCFS_WAIT_QUEUE_ENTRY
943 # LIBCFS_NEW_KERNEL_WRITE
945 # Kernel version 4.14 e13ec939e96b13e664bb6cee361cc976a0ee621a
946 # changed kernel_write prototype to make is plug compatible
947 # with the unexported vfs_write()
949 AC_DEFUN([LIBCFS_NEW_KERNEL_WRITE], [
950 tmp_flags="$EXTRA_KCFLAGS"
951 EXTRA_KCFLAGS="-Werror"
952 LB_CHECK_COMPILE([if 'kernel_write' matches other read/write helpers],
953 kernel_write_match, [
954 #include <linux/fs.h>
956 const void *buf = NULL;
958 return kernel_write(NULL, buf, 0, &pos);
960 AC_DEFINE(HAVE_NEW_KERNEL_WRITE, 1,
961 ['kernel_write' aligns with read/write helpers])
963 EXTRA_KCFLAGS="$tmp_flags"
964 ]) # LIBCFS_NEW_KERNEL_WRITE
967 # LIBCFS_MM_TOTALRAM_PAGES_FUNC
969 # kernel 5.0 commit ca79b0c211af63fa3276f0e3fd7dd9ada2439839
970 # mm: convert totalram_pages and totalhigh_pages variables to atomic
972 AC_DEFUN([LIBCFS_MM_TOTALRAM_PAGES_FUNC], [
973 tmp_flags="$EXTRA_KCFLAGS"
974 EXTRA_KCFLAGS="-Werror"
975 LB_CHECK_COMPILE([if totalram_pages is a function],
977 #include <linux/mm.h>
979 totalram_pages_inc();
981 AC_DEFINE(HAVE_TOTALRAM_PAGES_AS_FUNC, 1,
982 [if totalram_pages is a function])
984 EXTRA_KCFLAGS="$tmp_flags"
985 ]) # LIBCFS_MM_TOTALRAM_PAGES_FUNC
988 # LIBCFS_NEW_KERNEL_WRITE
990 # 4.14 commit bdd1d2d3d251c65b74ac4493e08db18971c09240 changed
991 # the signature of kernel_read to match other read/write helpers
992 # and place offset last.
994 AC_DEFUN([LIBCFS_NEW_KERNEL_READ], [
995 tmp_flags="$EXTRA_KCFLAGS"
996 EXTRA_KCFLAGS="-Werror"
997 LB_CHECK_COMPILE([if 'kernel_read()' has loff_t *pos as last parameter],
999 #include <linux/fs.h>
1002 kernel_read(NULL, NULL, 0, &pos);
1004 AC_DEFINE(HAVE_KERNEL_READ_LAST_POSP, 1,
1005 [kernel_read() signature ends with loff_t *pos])
1007 EXTRA_KCFLAGS="$tmp_flags"
1008 ]) # LIBCFS_NEW_KERNEL_READ
1011 # LIBCFS_DEFINE_TIMER
1013 # Kernel version 4.14 commit 1d27e3e2252ba9d949ca82fbdb73cde102cb2067
1014 # remove expires and data arguments from DEFINE_TIMER. Also the callback
1015 # when from using unsigned long argument to using struct timer_list pointer.
1017 AC_DEFUN([LIBCFS_DEFINE_TIMER], [
1018 LB_CHECK_COMPILE([if DEFINE_TIMER takes only 2 arguments],
1020 #include <linux/timer.h>
1022 static DEFINE_TIMER(my_timer, NULL);
1024 AC_DEFINE(HAVE_NEW_DEFINE_TIMER, 1,
1025 [DEFINE_TIMER uses only 2 arguements])
1027 ]) # LIBCFS_DEFINE_TIMER
1030 # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1032 # Kernel 2.6.27 commit 8594698ebddeef5443b7da8258ae33b3eaca61d5
1033 # exported save_stack_trace_tsk for x86.
1034 # Kernel 2.6.27 commit 01f4b8b8b8db09b88be7df7e51192e4e678b69d3
1035 # exported save_stack_trace_tsk for powerpc
1036 # Kernel 4.13 commit e27c7fa015d61c8be6a2c32b2144aad2ae6ec975
1037 # exported save_stack_trace_tsk for arm64
1038 # Kernel 4.14 commit 9a3dc3186fc3795e076a4122da9e0258651a9631
1039 # exported save_stack_trace_tsk for arm
1041 AC_DEFUN([LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK], [
1042 LB_CHECK_EXPORT([save_stack_trace_tsk], [arch/$SUBARCH/kernel/stacktrace.c],
1043 [AC_DEFINE(HAVE_SAVE_STACK_TRACE_TSK, 1,
1044 [save_stack_trace_tsk is exported])])
1045 ]) # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1048 # LIBCFS_LOCKDEP_IS_HELD
1050 # Kernel v4.15-rc8-106-g08f36ff64234
1051 # lockdep: Make lockdep checking constant
1053 AC_DEFUN([LIBCFS_LOCKDEP_IS_HELD], [
1054 tmp_flags="$EXTRA_KCFLAGS"
1055 EXTRA_KCFLAGS="-Werror"
1056 LB_CHECK_COMPILE([if 'lockdep_is_held()' uses const argument],
1058 #include <linux/lockdep.h>
1060 #ifdef CONFIG_LOCKDEP
1061 const struct spinlock *lock = NULL;
1063 lockdep_is_held(lock);
1066 AC_DEFINE(NEED_LOCKDEP_IS_HELD_DISCARD_CONST, 1,
1067 [lockdep_is_held() argument is const])
1069 EXTRA_KCFLAGS="$tmp_flags"
1070 ]) # LIBCFS_LOCKDEP_IS_HELD
1073 # LIBCFS_TIMER_SETUP
1075 # Kernel version 4.15 commit e99e88a9d2b067465adaa9c111ada99a041bef9a
1076 # setup_timer() was replaced by timer_setup(), where the callback
1077 # argument is the structure already holding the struct timer_list.
1079 AC_DEFUN([LIBCFS_TIMER_SETUP], [
1080 LB_CHECK_COMPILE([if setup_timer has been replaced with timer_setup],
1082 #include <linux/timer.h>
1084 timer_setup(NULL, NULL, 0);
1086 AC_DEFINE(HAVE_TIMER_SETUP, 1,
1087 [timer_setup has replaced setup_timer])
1089 ]) # LIBCFS_TIMER_SETUP
1092 # LIBCFS_WAIT_VAR_EVENT
1094 # Kernel version 4.16-rc4 commit 6b2bb7265f0b62605e8caee3613449ed0db270b9
1095 # added wait_var_event()
1097 AC_DEFUN([LIBCFS_WAIT_VAR_EVENT], [
1098 LB_CHECK_COMPILE([if 'wait_var_event' exist],
1100 #ifdef HAVE_WAIT_BIT_HEADER_H
1101 #include <linux/wait_bit.h>
1103 #include <linux/wait.h>
1107 AC_DEFINE(HAVE_WAIT_VAR_EVENT, 1,
1108 ['wait_var_event' is available])
1110 ]) # LIBCFS_WAIT_VAR_EVENT
1113 # LIBCFS_BITMAP_ALLOC
1115 # Kernel version 4.17 commit c42b65e363ce97a828f81b59033c3558f8fa7f70
1116 # added bitmap memory allocation handling.
1118 AC_DEFUN([LIBCFS_BITMAP_ALLOC], [
1119 LB_CHECK_COMPILE([if Linux bitmap memory management exist],
1121 #include <linux/bitmap.h>
1123 unsigned long *map = bitmap_alloc(1, GFP_KERNEL);
1125 AC_DEFINE(HAVE_BITMAP_ALLOC, 1,
1126 [Linux bitmap can be allocated])
1128 ]) # LIBCFS_BITMAP_ALLOC
1131 # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1133 # Kernel version 4.17-rc2 commit 8236b0ae31c837d2b3a2565c5f8d77f637e824cc
1134 # added clear_and_wake_up_bit()
1136 AC_DEFUN([LIBCFS_CLEAR_AND_WAKE_UP_BIT], [
1137 LB_CHECK_COMPILE([if 'clear_and_wake_up_bit' exist],
1138 clear_and_wake_up_bit, [
1139 #ifdef HAVE_WAIT_BIT_HEADER_H
1140 #include <linux/wait_bit.h>
1142 #include <linux/wait.h>
1144 clear_and_wake_up_bit(0, NULL);
1146 AC_DEFINE(HAVE_CLEAR_AND_WAKE_UP_BIT, 1,
1147 ['clear_and_wake_up_bit' is available])
1149 ]) # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1152 # LIBCFS_XARRAY_SUPPORT
1154 # 4.19-rc5 kernel commit 3159f943aafdbacb2f94c38fdaadabf2bbde2a14
1155 # replaced the radix tree implementation with Xarrays. This change
1156 # introduced functionaly needed for general Xarray support
1158 AC_DEFUN([LIBCFS_XARRAY_SUPPORT], [
1159 tmp_flags="$EXTRA_KCFLAGS"
1160 EXTRA_KCFLAGS="-Werror"
1161 LB_CHECK_COMPILE([if page cache uses Xarray],
1163 #include <linux/xarray.h>
1167 AC_DEFINE(HAVE_XARRAY_SUPPORT, 1,
1168 [kernel Xarray implementation lacks 'xa_is_value'])
1170 EXTRA_KCFLAGS="$tmp_flags"
1171 ]) # LIBCFS_XARRAY_SUPPORT
1174 # LIBCFS_HAVE_IOV_ITER_TYPE
1176 # kernel 4.20 commit 00e23707442a75b404392cef1405ab4fd498de6b
1177 # iov_iter: Use accessor functions to access an iterator's type and direction.
1179 AC_DEFUN([LIBCFS_HAVE_IOV_ITER_TYPE], [
1180 tmp_flags="$EXTRA_KCFLAGS"
1181 EXTRA_KCFLAGS="-Werror"
1182 LB_CHECK_COMPILE([if iov_iter_type exists],
1183 macro_iov_iter_type_exists, [
1184 #include <linux/uio.h>
1186 struct iov_iter iter = { .type = ITER_KVEC };
1187 enum iter_type type = iov_iter_type(&iter);
1190 AC_DEFINE(HAVE_IOV_ITER_TYPE, 1,
1191 [if iov_iter_type exists])
1193 EXTRA_KCFLAGS="$tmp_flags"
1194 ]) # LIBCFS_HAVE_IOV_ITER_TYPE
1197 # LIBCFS_GET_REQUEST_KEY_AUTH
1199 # kernel 5.0 commit 822ad64d7e46a8e2c8b8a796738d7b657cbb146d
1200 # keys: Fix dependency loop between construction record and auth key
1202 # Added <keys/request_key_auth-type.h> and get_request_key_auth()
1203 # which was propagated to stable
1205 AC_DEFUN([LIBCFS_GET_REQUEST_KEY_AUTH], [
1206 tmp_flags="$EXTRA_KCFLAGS"
1207 EXTRA_KCFLAGS="-Werror"
1208 LB_CHECK_COMPILE([if get_request_key_auth() is available],
1209 get_request_key_auth_exported, [
1210 #include <linux/key.h>
1211 #include <linux/keyctl.h>
1212 #include <keys/request_key_auth-type.h>
1215 const struct key *key = NULL;
1216 struct request_key_auth *rka = get_request_key_auth(key);
1218 ring = key_get(rka->dest_keyring);
1220 AC_DEFINE(HAVE_GET_REQUEST_KEY_AUTH, 1,
1221 [get_request_key_auth() is available])
1223 EXTRA_KCFLAGS="$tmp_flags"
1224 ]) # LIBCFS_GET_REQUEST_KEY_AUTH
1227 # LIBCFS_LOOKUP_USER_KEY
1229 # kernel 5.3 commit 3cf5d076fb4d48979f382bc9452765bf8b79e740
1230 # signal: Remove task parameter from force_sig
1232 AC_DEFUN([LIBCFS_LOOKUP_USER_KEY], [
1233 tmp_flags="$EXTRA_KCFLAGS"
1234 EXTRA_KCFLAGS="-Werror"
1235 LB_CHECK_COMPILE([if lookup_user_key() is available],
1236 lookup_user_key_exported, [
1237 #include <linux/key.h>
1238 #include <linux/keyctl.h>
1240 lookup_user_key(KEY_SPEC_USER_KEYRING, 0, 0);
1242 AC_DEFINE(HAVE_LOOKUP_USER_KEY, 1,
1243 [lookup_user_key() is available])
1245 EXTRA_KCFLAGS="$tmp_flags"
1246 ]) # LIBCFS_LOOKUP_USER_KEY
1249 # LIBCFS_FORCE_SIG_WITH_TASK
1251 # kernel 5.3 commit 3cf5d076fb4d48979f382bc9452765bf8b79e740
1252 # signal: Remove task parameter from force_sig
1254 AC_DEFUN([LIBCFS_FORCE_SIG_WITH_TASK], [
1255 tmp_flags="$EXTRA_KCFLAGS"
1256 EXTRA_KCFLAGS="-Werror"
1257 LB_CHECK_COMPILE([if force_sig has task parameter],
1258 force_sig_with_task, [
1259 #include <linux/sched/signal.h>
1261 force_sig(SIGINT, NULL);
1263 AC_DEFINE(HAVE_FORCE_SIG_WITH_TASK, 1,
1264 [force_sig() has task parameter])
1266 EXTRA_KCFLAGS="$tmp_flags"
1267 ]) # LIBCFS_FORCE_SIG_WITH_TASK
1270 # LIBCFS_CACHE_DETAIL_WRITERS
1272 # kernel v5.3-rc2-1-g64a38e840ce5
1273 # SUNRPC: Track writers of the 'channel' file to improve cache_listeners_exist
1275 AC_DEFUN([LIBCFS_CACHE_DETAIL_WRITERS], [
1276 tmp_flags="$EXTRA_KCFLAGS"
1277 EXTRA_KCFLAGS="-Werror"
1278 LB_CHECK_COMPILE([if struct cache_detail has writers],
1279 cache_detail_writers_atomic, [
1280 #include <linux/sunrpc/cache.h>
1282 static struct cache_detail rsi_cache;
1284 atomic_set(&rsi_cache.writers, 0);
1286 AC_DEFINE(HAVE_CACHE_DETAIL_WRITERS, 1,
1287 [struct cache_detail has writers])
1289 EXTRA_KCFLAGS="$tmp_flags"
1290 ]) # LIBCFS_CACHE_DETAIL_WRITERS
1293 # LIBCFS_KALLSYMS_LOOKUP
1295 # kernel v5.6-11591-g0bd476e6c671
1296 # kallsyms: unexport kallsyms_lookup_name() and kallsyms_on_each_symbol()
1297 AC_DEFUN([LIBCFS_KALLSYMS_LOOKUP], [
1298 LB_CHECK_EXPORT([kallsyms_lookup_name], [kernel/kallsyms.c],
1299 [AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1,
1300 [kallsyms_lookup_name is exported by kernel])])
1301 ]) # LIBCFS_KALLSYMS_LOOKUP
1304 # LIBCFS_VMALLOC_2ARGS
1306 # kernel v5.8-rc1~201^2~19
1307 # mm: remove the pgprot argument to __vmalloc
1308 AC_DEFUN([LIBCFS_VMALLOC_2ARGS], [
1309 LB_CHECK_COMPILE([if __vmalloc has 2 args],
1311 #include <linux/vmalloc.h>
1315 AC_DEFINE(HAVE_VMALLOC_2ARGS, 1,
1316 [__vmalloc only takes 2 args.])
1318 ]) # LIBCFS_VMALLOC_2ARGS
1321 # LIBCFS_HAVE_NR_UNSTABLE_NFS
1323 # kernel v5.8-rc1~201^2~75
1324 # mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead
1326 AC_DEFUN([LIBCFS_HAVE_NR_UNSTABLE_NFS], [
1327 tmp_flags="$EXTRA_KCFLAGS"
1328 EXTRA_KCFLAGS="-Werror"
1329 LB_CHECK_COMPILE([if NR_UNSTABLE_NFS still in use],
1330 nr_unstable_nfs_exists, [
1331 #include <linux/mm.h>
1335 i = NR_UNSTABLE_NFS;
1337 AC_DEFINE(HAVE_NR_UNSTABLE_NFS, 1,
1338 [NR_UNSTABLE_NFS is still in use.])
1340 EXTRA_KCFLAGS="$tmp_flags"
1341 ]) # LIBCFS_HAVE_NR_UNSTABLE_NFS
1344 # LIBCFS_HAVE_MMAP_LOCK
1346 # kernel v5.8-rc1~83^2~24
1347 # mmap locking API: rename mmap_sem to mmap_lock
1349 AC_DEFUN([LIBCFS_HAVE_MMAP_LOCK], [
1350 LB_CHECK_COMPILE([if mmap_lock API is available],
1352 #include <linux/mm.h>
1354 mmap_write_lock(NULL);
1356 AC_DEFINE(HAVE_MMAP_LOCK, 1,
1357 [mmap_lock API is available.])
1359 ]) # LIBCFS_HAVE_MMAP_LOCK
1362 # LIBCFS_KERNEL_SETSOCKOPT
1364 # kernel v5.8-rc1~165^2~59^2
1365 # net: remove kernel_setsockopt
1366 AC_DEFUN([LIBCFS_KERNEL_SETSOCKOPT], [
1367 tmp_flags="$EXTRA_KCFLAGS"
1368 EXTRA_KCFLAGS="-Werror"
1369 LB_CHECK_COMPILE([if kernel_setsockopt still in use],
1370 kernel_setsockopt_exists, [
1371 #include <linux/net.h>
1373 kernel_setsockopt(NULL, 0, 0, NULL, 0);
1375 AC_DEFINE(HAVE_KERNEL_SETSOCKOPT, 1,
1376 [kernel_setsockopt still in use])
1378 EXTRA_KCFLAGS="$tmp_flags"
1379 ]) # LIBCFS_KERNEL_SETSOCKOPT
1381 AC_DEFUN([LIBCFS_PROG_LINUX_SRC], [] )
1382 AC_DEFUN([LIBCFS_PROG_LINUX_RESULTS], [])
1387 # LibCFS linux kernel checks
1389 AC_DEFUN([LIBCFS_PROG_LINUX], [
1390 AC_MSG_NOTICE([LibCFS kernel checks
1391 ==============================================================================])
1392 LIBCFS_CONFIG_PANIC_DUMPLOG
1395 LIBCFS_KTIME_GET_TS64
1397 LIBCFS_PREPARE_TO_WAIT_EVENT
1398 LIBCFS_KERNEL_PARAM_OPS
1402 LIBCFS_KTIME_COMPARE
1403 LIBCFS_SHRINKER_COUNT
1405 LIBCFS_IOV_ITER_HAS_TYPE
1407 LIBCFS_HAVE_NS_TO_TIMESPEC64
1409 LIBCFS_HLIST_ADD_AFTER
1412 LIBCFS_KTIME_GET_REAL_TS64
1413 LIBCFS_KTIME_GET_REAL_SECONDS
1414 LIBCFS_KTIME_GET_REAL_NS
1415 LIBCFS_KTIME_TO_TIMESPEC64
1416 LIBCFS_TIMESPEC64_SUB
1417 LIBCFS_TIMESPEC64_TO_KTIME
1419 LIBCFS_KTIME_GET_SECONDS
1421 LIBCFS_KTIME_MS_DELTA
1423 LIBCFS_KERNEL_PARAM_LOCK
1425 LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
1427 LIBCFS_KSTRTOBOOL_FROM_USER
1429 LIBCFS_CRYPTO_HASH_HELPERS
1430 LIBCFS_EXPORT_KSET_FIND_OBJ
1431 LIBCFS_RHASHTABLE_REPLACE
1433 LIBCFS_BROKEN_HASH_64
1434 LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
1435 LIBCFS_GET_USER_PAGES_6ARG
1438 LIBCFS_RHASHTABLE_INSERT_FAST
1439 LIBCFS_RHASHTABLE_WALK_INIT_3ARG
1441 LIBCFS_RHASHTABLE_LOOKUP
1443 LIBCFS_STACKTRACE_OPS
1445 LIBCFS_GET_USER_PAGES_GUP_FLAGS
1446 LIBCFS_RHASHTABLE_WALK_ENTER
1448 LIBCFS_HOTPLUG_STATE_MACHINE
1451 LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
1452 LIBCFS_SCHED_HEADERS
1454 LIBCFS_RHT_BUCKET_VAR
1456 LIBCFS_HAVE_PROCESSOR_HEADER
1457 LIBCFS_HAVE_WAIT_BIT_HEADER
1458 LIBCFS_MEMALLOC_NORECLAIM
1459 LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
1460 LIBCFS_CPUS_READ_LOCK
1463 LIBCFS_WAIT_QUEUE_ENTRY
1466 LIBCFS_NEW_KERNEL_WRITE
1467 LIBCFS_NEW_KERNEL_READ
1468 LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1470 LIBCFS_LOCKDEP_IS_HELD
1473 LIBCFS_WAIT_VAR_EVENT
1476 LIBCFS_CLEAR_AND_WAKE_UP_BIT
1478 LIBCFS_XARRAY_SUPPORT
1480 LIBCFS_HAVE_IOV_ITER_TYPE
1482 LIBCFS_MM_TOTALRAM_PAGES_FUNC
1483 LIBCFS_GET_REQUEST_KEY_AUTH
1485 LIBCFS_LOOKUP_USER_KEY
1486 LIBCFS_FORCE_SIG_WITH_TASK
1487 LIBCFS_CACHE_DETAIL_WRITERS
1488 LIBCFS_HAVE_NR_UNSTABLE_NFS
1490 LIBCFS_KALLSYMS_LOOKUP
1492 LIBCFS_HAVE_MMAP_LOCK
1493 LIBCFS_KERNEL_SETSOCKOPT
1494 LIBCFS_VMALLOC_2ARGS
1495 ]) # LIBCFS_PROG_LINUX
1498 # LIBCFS_PATH_DEFAULTS
1500 # default paths for installed files
1502 AC_DEFUN([LIBCFS_PATH_DEFAULTS], [
1503 ]) # LIBCFS_PATH_DEFAULTS
1508 # other configure checks
1510 AC_DEFUN([LIBCFS_CONFIGURE], [
1511 AC_MSG_NOTICE([LibCFS core checks
1512 ==============================================================================])
1514 # libcfs/libcfs/util/nidstrings.c
1515 AC_CHECK_HEADERS([netdb.h asm/types.h endian.h])
1516 AC_CHECK_FUNCS([gethostbyname])
1518 # -------- Check for required packages --------------
1520 AC_MSG_NOTICE([LibCFS required packages checks
1521 ==============================================================================])
1523 AC_MSG_CHECKING([whether to enable readline support])
1524 AC_ARG_ENABLE(readline,
1525 AC_HELP_STRING([--disable-readline],
1526 [disable readline support]),
1527 [], [enable_readline="yes"])
1528 AC_MSG_RESULT([$enable_readline])
1531 AS_IF([test "x$enable_readline" = xyes], [
1532 AC_CHECK_LIB([readline], [readline], [
1533 LIBREADLINE="-lreadline"
1534 AC_DEFINE(HAVE_LIBREADLINE, 1,
1535 [readline library is available])
1538 AC_SUBST(LIBREADLINE)
1540 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
1541 AC_ARG_ENABLE([libpthread],
1542 AC_HELP_STRING([--disable-libpthread],
1543 [disable libpthread]),
1544 [], [enable_libpthread="yes"])
1545 AC_MSG_RESULT([$enable_libpthread])
1548 AS_IF([test "x$enable_libpthread" = xyes], [
1549 AC_CHECK_LIB([pthread], [pthread_create], [
1550 PTHREAD_LIBS="-lpthread"
1551 AC_DEFINE([HAVE_LIBPTHREAD], 1,
1552 [use libpthread for libcfs library])
1555 AC_MSG_WARN([Using libpthread for libcfs library is disabled explicitly])
1557 AC_SUBST(PTHREAD_LIBS)
1558 ]) # LIBCFS_CONFIGURE
1561 # LIBCFS_CONFIG_FILES
1563 # files that should be generated with AC_OUTPUT
1565 AC_DEFUN([LIBCFS_CONFIG_FILES], [
1569 libcfs/autoconf/Makefile
1570 libcfs/include/Makefile
1571 libcfs/include/libcfs/Makefile
1572 libcfs/include/uapi/Makefile
1573 libcfs/include/libcfs/linux/Makefile
1574 libcfs/include/libcfs/util/Makefile
1575 libcfs/include/libcfs/crypto/Makefile
1576 libcfs/include/uapi/linux/Makefile
1577 libcfs/libcfs/Makefile
1578 libcfs/libcfs/autoMakefile
1579 libcfs/libcfs/linux/Makefile
1580 libcfs/libcfs/util/Makefile
1581 libcfs/libcfs/crypto/Makefile
1583 ]) # LIBCFS_CONFIG_FILES