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 AS_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])
15 AC_SUBST(ENABLE_LIBCFS_CDEBUG, yes)
17 AC_SUBST(ENABLE_LIBCFS_CDEBUG, no)
20 AC_MSG_CHECKING([whether to enable ENTRY/EXIT])
21 AC_ARG_ENABLE([libcfs_trace],
22 AS_HELP_STRING([--disable-libcfs-trace],
23 [disable libcfs ENTRY/EXIT]),
24 [], [enable_libcfs_trace="yes"])
25 AC_MSG_RESULT([$enable_libcfs_trace])
26 AS_IF([test "x$enable_libcfs_trace" = xyes], [
27 AC_DEFINE(CDEBUG_ENTRY_EXIT, 1, [enable libcfs ENTRY/EXIT])
28 AC_SUBST(ENABLE_LIBCFS_TRACE, yes)
30 AC_SUBST(ENABLE_LIBCFS_TRACE, no)
33 AC_MSG_CHECKING([whether to enable LASSERT, LASSERTF])
34 AC_ARG_ENABLE([libcfs_assert],
35 AS_HELP_STRING([--disable-libcfs-assert],
36 [disable libcfs LASSERT, LASSERTF]),
37 [], [enable_libcfs_assert="yes"])
38 AC_MSG_RESULT([$enable_libcfs_assert])
39 AS_IF([test x$enable_libcfs_assert = xyes], [
40 AC_DEFINE(LIBCFS_DEBUG, 1, [enable libcfs LASSERT, LASSERTF])
41 AC_SUBST(ENABLE_LIBCFS_ASSERT, yes)
43 AC_SUBST(ENABLE_LIBCFS_ASSERT, no)
45 ]) # LIBCFS_CONFIG_CDEBUG
48 # LIBCFS_CONFIG_PANIC_DUMPLOG
50 # check if tunable panic_dumplog is wanted
52 AC_DEFUN([LIBCFS_CONFIG_PANIC_DUMPLOG], [
53 AC_MSG_CHECKING([whether to use tunable 'panic_dumplog' support])
54 AC_ARG_ENABLE([panic_dumplog],
55 AS_HELP_STRING([--enable-panic_dumplog],
56 [enable panic_dumplog]),
57 [], [enable_panic_dumplog="no"])
58 AC_MSG_RESULT([$enable_panic_dumplog])
59 AS_IF([test "x$enable_panic_dumplog" = xyes], [
60 AC_DEFINE(LNET_DUMP_ON_PANIC, 1, [use dumplog on panic])
61 AC_SUBST(ENABLE_PANIC_DUMPLOG, yes)
63 AC_SUBST(ENABLE_PANIC_DUMPLOG, no)
65 ]) # LIBCFS_CONFIG_PANIC_DUMPLOG
68 # Kernel version 3.11 introduced ktime_get_ts64
70 AC_DEFUN([LIBCFS_SRC_KTIME_GET_TS64], [
71 LB2_LINUX_TEST_SRC([ktime_get_ts64], [
72 #include <linux/hrtimer.h>
73 #include <linux/ktime.h>
75 struct timespec64 *ts = NULL;
80 AC_DEFUN([LIBCFS_KTIME_GET_TS64], [
81 LB2_MSG_LINUX_TEST_RESULT([does function 'ktime_get_ts64' exist],
83 AC_DEFINE(HAVE_KTIME_GET_TS64, 1,
84 ['ktime_get_ts64' is available])
86 ]) # LIBCFS_KTIME_GET_TS64
89 # Kernel version 3.12-rc4 commit c2d816443ef30 added prepare_to_wait_event()
91 AC_DEFUN([LIBCFS_SRC_PREPARE_TO_WAIT_EVENT],[
92 LB2_LINUX_TEST_SRC([prepare_to_wait_event], [
93 #include <linux/wait.h>
95 prepare_to_wait_event(NULL, NULL, 0);
98 AC_DEFUN([LIBCFS_PREPARE_TO_WAIT_EVENT],[
99 LB2_MSG_LINUX_TEST_RESULT([does function 'prepare_to_wait_event' exist],
100 [prepare_to_wait_event], [
101 AC_DEFINE(HAVE_PREPARE_TO_WAIT_EVENT, 1,
102 ['prepare_to_wait_event' is available])
104 ]) # LIBCFS_PREPARE_TO_WAIT_EVENT
107 # Linux kernel 3.12 introduced struct kernel_param_ops
108 # This has been backported to all lustre supported
109 # clients except RHEL6. We have to handle the differences.
111 AC_DEFUN([LIBCFS_SRC_KERNEL_PARAM_OPS],[
112 LB2_LINUX_TEST_SRC([kernel_param_ops], [
113 #include <linux/module.h>
115 struct kernel_param_ops ops;
120 AC_DEFUN([LIBCFS_KERNEL_PARAM_OPS],[
121 LB2_MSG_LINUX_TEST_RESULT([does 'struct kernel_param_ops' exist],
122 [kernel_param_ops], [
123 AC_DEFINE(HAVE_KERNEL_PARAM_OPS, 1,
124 ['struct kernel_param_ops' is available])
126 ]) # LIBCFS_KERNEL_PARAM_OPS
129 # Kernel version 3.12 introduced ktime_add
131 AC_DEFUN([LIBCFS_SRC_KTIME_ADD],[
132 LB2_LINUX_TEST_SRC([ktime_add], [
133 #include <linux/hrtimer.h>
134 #include <linux/ktime.h>
136 ktime_t start = ktime_set(0, 0);
140 total = ktime_add(start, end);
143 AC_DEFUN([LIBCFS_KTIME_ADD],[
144 LB2_MSG_LINUX_TEST_RESULT([does function 'ktime_add' exist],
146 AC_DEFINE(HAVE_KTIME_ADD, 1, [ktime_add is available])
148 ]) # LIBCFS_KTIME_ADD
151 # Kernel version 3.12 introduced ktime_after
153 AC_DEFUN([LIBCFS_SRC_KTIME_AFTER],[
154 LB2_LINUX_TEST_SRC([ktime_after], [
155 #include <linux/hrtimer.h>
156 #include <linux/ktime.h>
158 ktime_t start = ktime_set(0, 0);
161 ktime_after(start, end);
164 AC_DEFUN([LIBCFS_KTIME_AFTER],[
165 LB2_MSG_LINUX_TEST_RESULT([does function 'ktime_after' exist],
167 AC_DEFINE(HAVE_KTIME_AFTER, 1, [ktime_after is available])
169 ]) # LIBCFS_KTIME_AFTER
172 # Kernel version 3.12 introduced ktime_before
173 # See linux commit 67cb9366ff5f99868100198efba5ca88aaa6ad25
175 AC_DEFUN([LIBCFS_SRC_KTIME_BEFORE],[
176 LB2_LINUX_TEST_SRC([ktime_before], [
177 #include <linux/hrtimer.h>
178 #include <linux/ktime.h>
180 ktime_t start = ktime_set(0, 0);
183 ktime_before(start, end);
186 AC_DEFUN([LIBCFS_KTIME_BEFORE],[
187 LB2_MSG_LINUX_TEST_RESULT([does function 'ktime_before' exist],
189 AC_DEFINE(HAVE_KTIME_BEFORE, 1, [ktime_before is available])
191 ]) # LIBCFS_KTIME_BEFORE
194 # Kernel version 3.12 introduced ktime_compare
196 AC_DEFUN([LIBCFS_SRC_KTIME_COMPARE],[
197 LB2_LINUX_TEST_SRC([ktime_compare], [
198 #include <linux/hrtimer.h>
199 #include <linux/ktime.h>
201 ktime_t start = ktime_set(0, 0);
204 ktime_compare(start, end);
207 AC_DEFUN([LIBCFS_KTIME_COMPARE],[
208 LB2_MSG_LINUX_TEST_RESULT([does function 'ktime_compare' exist],
210 AC_DEFINE(HAVE_KTIME_COMPARE, 1,
211 [ktime_compare is available])
213 ]) # LIBCFS_KTIME_COMPARE
216 # FC19 3.12 kernel struct shrinker change
218 AC_DEFUN([LIBCFS_SRC_SHRINKER_COUNT],[
219 LB2_LINUX_TEST_SRC([shrinker_count_objects], [
220 #include <linux/mmzone.h>
221 #include <linux/shrinker.h>
223 struct shrinker shrinker;
225 shrinker.count_objects = NULL;
228 AC_DEFUN([LIBCFS_SHRINKER_COUNT],[
229 LB2_MSG_LINUX_TEST_RESULT([shrinker has 'count_objects'],
230 [shrinker_count_objects], [
231 AC_DEFINE(HAVE_SHRINKER_COUNT, 1,
232 [shrinker has count_objects member])
234 ]) # LIBCFS_SHRINKER_COUNT
237 # Kernel version 3.13 commit aace05097a0fd467230e39acb148be0fdaa90068
238 # add match_wildcard() function.
240 AC_DEFUN([LIBCFS_SRC_MATCH_WILDCARD],[
241 LB2_LINUX_TEST_SRC([match_wildcard], [
242 #include <linux/parser.h>
246 match = match_wildcard(NULL, NULL);
249 AC_DEFUN([LIBCFS_MATCH_WILDCARD],[
250 LB2_MSG_LINUX_TEST_RESULT([does function 'match_wildcard' exist],
252 AC_DEFINE(HAVE_MATCH_WILDCARD, 1,
253 [match_wildcard() is available])
255 ]) # LIBCFS_MATCH_WILDCARD
258 # LIBCFS_HAVE_MAPPING_AS_EXITING_FLAG
260 # v3.14-7405-g91b0abe36a7b added AS_EXITING flag with
261 # mapping_exiting() and mapping_set_exiting()
263 AC_DEFUN([LIBCFS_SRC_HAVE_MAPPING_AS_EXITING_FLAG], [
264 m4_pattern_allow([AS_EXITING])
265 LB2_LINUX_TEST_SRC([mapping_exiting_exists], [
266 #include <linux/pagemap.h>
268 enum mapping_flags flag = AS_EXITING;
272 AC_DEFUN([LIBCFS_HAVE_MAPPING_AS_EXITING_FLAG], [
273 LB2_MSG_LINUX_TEST_RESULT([if enum mapping_flags has AS_EXITING flag],
274 [mapping_exiting_exists], [
275 AC_DEFINE(HAVE_MAPPING_AS_EXITING_FLAG, 1,
276 [enum mapping_flags has AS_EXITING flag])
278 ]) # LIBCFS_HAVE_MAPPING_AS_EXITING_FLAG
281 # LIBCFS_IOV_ITER_HAS_TYPE
283 # kernel 3.15-rc4 commit 71d8e532b1549a478e6a6a8a44f309d050294d00
284 # start adding the tag to iov_iter
286 AC_DEFUN([LIBCFS_SRC_IOV_ITER_HAS_TYPE], [
287 LB2_LINUX_TEST_SRC([iov_iter_has_type_member], [
288 #include <linux/uio.h>
290 struct iov_iter iter = { .type = ITER_KVEC };
295 AC_DEFUN([LIBCFS_IOV_ITER_HAS_TYPE], [
296 LB2_MSG_LINUX_TEST_RESULT([if iov_iter has member type],
297 [iov_iter_has_type_member], [
298 AC_DEFINE(HAVE_IOV_ITER_HAS_TYPE_MEMBER, 1,
299 [if iov_iter has member type])
301 ]) # LIBCFS_IOV_ITER_HAS_TYPE
304 # LIBCFS_HAVE_NS_TO_TIMESPEC64
306 # Kernel version 3.16-rc3 commit a84d1169164b274f13b97a23ff235c000efe3b49
307 # introduced struct __kernel_old_timeval
309 AC_DEFUN([LIBCFS_SRC_HAVE_NS_TO_TIMESPEC64],[
310 LB2_LINUX_TEST_SRC([kernel_old_timeval], [
311 #include <linux/time.h>
313 struct timespec64 kts;
315 kts = ns_to_timespec64(0);
318 AC_DEFUN([LIBCFS_HAVE_NS_TO_TIMESPEC64],[
319 LB2_MSG_LINUX_TEST_RESULT([does 'ns_to_timespec64()' exist],
320 [kernel_old_timeval], [
321 AC_DEFINE(HAVE_NS_TO_TIMESPEC64, 1,
322 [ns_to_timespec64() is available])
324 ]) # LIBCFS_HAVE_NS_TO_TIMESPEC64
329 # Kernel version 3.16 commit b01250856b25f4417c51aa33afc451fbf7da1484
330 # added glob support to the Linux kernel
332 AC_DEFUN([LIBCFS_SRC_HAVE_GLOB],[
333 LB2_LINUX_TEST_SRC([glob_match], [
334 #include <linux/glob.h>
336 return glob_match(NULL, NULL);
339 AC_DEFUN([LIBCFS_HAVE_GLOB],[
340 LB2_MSG_LINUX_TEST_RESULT([does 'glob_match()' exist],
342 AC_DEFINE(HAVE_GLOB, 1,
343 [glob_match() is available])
345 ]) # LIBCFS_HAVE_GLOB
348 # Kernel version 3.17 changed hlist_add_after to
351 AC_DEFUN([LIBCFS_SRC_HLIST_ADD_AFTER],[
352 LB2_LINUX_TEST_SRC([hlist_add_after], [
353 #include <linux/list.h>
355 hlist_add_after(NULL, NULL);
358 AC_DEFUN([LIBCFS_HLIST_ADD_AFTER],[
359 LB2_MSG_LINUX_TEST_RESULT([does function 'hlist_add_after' exist],
361 AC_DEFINE(HAVE_HLIST_ADD_AFTER, 1,
362 [hlist_add_after is available])
364 ]) # LIBCFS_HLIST_ADD_AFTER
367 # Kernel version 3.17 introduced struct timespec64
369 AC_DEFUN([LIBCFS_SRC_TIMESPEC64],[
370 LB2_LINUX_TEST_SRC([timespec64], [
371 #include <linux/time.h>
373 struct timespec64 ts;
379 AC_DEFUN([LIBCFS_TIMESPEC64],[
380 LB2_MSG_LINUX_TEST_RESULT([does 'struct timespec64' exist],
382 AC_DEFINE(HAVE_TIMESPEC64, 1,
383 ['struct timespec64' is available])
385 ]) # LIBCFS_TIMESPEC64
388 # Kernel version 3.17 introduced ktime_get_real_ts64
390 AC_DEFUN([LIBCFS_SRC_KTIME_GET_REAL_TS64],[
391 LB2_LINUX_TEST_SRC([ktime_get_real_ts64], [
392 #include <linux/ktime.h>
394 struct timespec64 *ts = NULL;
396 ktime_get_real_ts64(ts);
399 AC_DEFUN([LIBCFS_KTIME_GET_REAL_TS64],[
400 LB2_MSG_LINUX_TEST_RESULT([does function 'ktime_get_real_ts64' exist],
401 [ktime_get_real_ts64], [
402 AC_DEFINE(HAVE_KTIME_GET_REAL_TS64, 1,
403 ['ktime_get_real_ts64' is available])
405 ]) # LIBCFS_KTIME_GET_REAL_TS64
408 # Kernel version 3.17 introduced ktime_get_real_seconds
410 AC_DEFUN([LIBCFS_SRC_KTIME_GET_REAL_SECONDS],[
411 LB2_LINUX_TEST_SRC([ktime_get_real_seconds], [
412 #include <linux/hrtimer.h>
413 #include <linux/ktime.h>
417 now = ktime_get_real_seconds();
420 AC_DEFUN([LIBCFS_KTIME_GET_REAL_SECONDS],[
421 LB2_MSG_LINUX_TEST_RESULT([does function 'ktime_get_real_ts64' exist],
422 [ktime_get_real_seconds], [
423 AC_DEFINE(HAVE_KTIME_GET_REAL_SECONDS, 1,
424 ['ktime_get_real_seconds' is available])
426 ]) # LIBCFS_KTIME_GET_REAL_SECONDS
429 # Kernel version 3.17 created ktime_get_ns wrapper
431 AC_DEFUN([LIBCFS_SRC_KTIME_GET_NS],[
432 LB2_LINUX_TEST_SRC([ktime_get_ns], [
433 #include <linux/hrtimer.h>
434 #include <linux/ktime.h>
438 nanoseconds = ktime_get_ns();
441 AC_DEFUN([LIBCFS_KTIME_GET_NS],[
442 LB2_MSG_LINUX_TEST_RESULT([does function 'ktime_get_ns' exist],
444 AC_DEFINE(NEED_KTIME_GET_NS, 1,
445 ['ktime_get_ns' is not available])
447 ]) # LIBCFS_KTIME_GET_NS
450 # Kernel version 3.17 created ktime_get_real_ns wrapper
452 AC_DEFUN([LIBCFS_SRC_KTIME_GET_REAL_NS],[
453 LB2_LINUX_TEST_SRC([ktime_get_real_ns], [
454 #include <linux/hrtimer.h>
455 #include <linux/ktime.h>
459 nanoseconds = ktime_get_real_ns();
462 AC_DEFUN([LIBCFS_KTIME_GET_REAL_NS],[
463 LB2_MSG_LINUX_TEST_RESULT([does function 'ktime_get_real_ns' exist],
464 [ktime_get_real_ns], [],[
465 AC_DEFINE(NEED_KTIME_GET_REAL_NS, 1,
466 ['ktime_get_real_ns' is not available])
468 ]) # LIBCFS_KTIME_GET_REAL_NS
471 # Kernel version 3.17 introduced ktime_to_timespec64
473 AC_DEFUN([LIBCFS_SRC_KTIME_TO_TIMESPEC64],[
474 LB2_LINUX_TEST_SRC([ktime_to_timespec64], [
475 #include <linux/hrtimer.h>
476 #include <linux/ktime.h>
478 ktime_t now = ktime_set(0, 0);
479 struct timespec64 ts;
481 ts = ktime_to_timespec64(now);
484 AC_DEFUN([LIBCFS_KTIME_TO_TIMESPEC64],[
485 LB2_MSG_LINUX_TEST_RESULT([does function 'ktime_to_timespec64' exist],
486 [ktime_to_timespec64], [
487 AC_DEFINE(HAVE_KTIME_TO_TIMESPEC64, 1,
488 ['ktime_to_timespec64' is available])
490 ]) # LIBCFS_KTIME_TO_TIMESPEC64
493 # Kernel version 3.17 introduced timespec64_sub
495 AC_DEFUN([LIBCFS_SRC_TIMESPEC64_SUB],[
496 LB2_LINUX_TEST_SRC([timespec64_sub], [
497 #include <linux/time.h>
499 struct timespec64 later = { }, earlier = { }, diff;
501 diff = timespec64_sub(later, earlier);
504 AC_DEFUN([LIBCFS_TIMESPEC64_SUB],[
505 LB2_MSG_LINUX_TEST_RESULT([does function 'timespec64_sub' exist],
507 AC_DEFINE(HAVE_TIMESPEC64_SUB, 1,
508 ['timespec64_sub' is available])
510 ]) # LIBCFS_TIMESPEC64_SUB
513 # Kernel version 3.17 introduced timespec64_to_ktime
515 AC_DEFUN([LIBCFS_SRC_TIMESPEC64_TO_KTIME],[
516 LB2_LINUX_TEST_SRC([timespec64_to_ktime], [
517 #include <linux/ktime.h>
519 struct timespec64 ts;
522 now = timespec64_to_ktime(ts);
525 AC_DEFUN([LIBCFS_TIMESPEC64_TO_KTIME],[
526 LB2_MSG_LINUX_TEST_RESULT([does function 'timespec64_to_ktime' exist],
527 [timespec64_to_ktime], [
528 AC_DEFINE(HAVE_TIMESPEC64_TO_KTIME, 1,
529 ['timespec64_to_ktime' is available])
531 ]) # LIBCFS_TIMESPEC64_TO_KTIME
534 # Kernel version 3.19 introduced ktime_get_seconds
536 AC_DEFUN([LIBCFS_SRC_KTIME_GET_SECONDS],[
537 LB2_LINUX_TEST_SRC([ktime_get_seconds], [
538 #include <linux/ktime.h>
542 now = ktime_get_seconds();
545 AC_DEFUN([LIBCFS_KTIME_GET_SECONDS],[
546 LB2_MSG_LINUX_TEST_RESULT([does function 'ktime_get_seconds' exist],
547 [ktime_get_seconds], [
548 AC_DEFINE(HAVE_KTIME_GET_SECONDS, 1,
549 ['ktime_get_seconds' is available])
551 ]) # LIBCFS_KTIME_GET_SECONDS
554 # Kernel version 3.19 commit v3.18-rc2-26-g61ada528dea0
555 # introduce wait_woken()
557 AC_DEFUN([LIBCFS_SRC_WAIT_WOKEN],[
558 LB2_LINUX_TEST_SRC([wait_woken], [
559 #include <linux/wait.h>
561 wait_woken(NULL, 0, 0);
564 AC_DEFUN([LIBCFS_WAIT_WOKEN],[
565 LB2_MSG_LINUX_TEST_RESULT([does function 'wait_woken' exist],
567 AC_DEFINE(HAVE_WAIT_WOKEN, 1,
568 ['wait_woken, is available'])
570 ]) # LIBCFS_WAIT_WOKEN
573 # Kernel version 4.0 commit 41fbf3b39d5eca01527338b4d0ee15ee1ae1023c
574 # introduced the helper function ktime_ms_delta.
576 AC_DEFUN([LIBCFS_SRC_KTIME_MS_DELTA],[
577 LB2_LINUX_TEST_SRC([ktime_ms_delta], [
578 #include <linux/ktime.h>
580 ktime_t start = ktime_set(0, 0);
583 ktime_ms_delta(start, end);
586 AC_DEFUN([LIBCFS_KTIME_MS_DELTA],[
587 LB2_MSG_LINUX_TEST_RESULT([does function 'ktime_ms_delta' exist],
589 AC_DEFINE(HAVE_KTIME_MS_DELTA, 1,
590 ['ktime_ms_delta' is available])
592 ]) # LIBCFS_KTIME_MS_DELTA
595 # Kernel version 4.1 commit b51d23e4e9fea6f264d39535c2a62d1f51e7ccc3
596 # create per module locks which added kernel_param_[un]lock(). Older
597 # kernels you have to use __kernel_param_[un]lock(). In that case its
598 # a global lock for all modules but that is okay since its a rare event.
600 AC_DEFUN([LIBCFS_SRC_KERNEL_PARAM_LOCK],[
601 LB2_LINUX_TEST_SRC([kernel_param_lock], [
602 #include <linux/moduleparam.h>
604 kernel_param_lock(NULL);
605 kernel_param_unlock(NULL);
608 AC_DEFUN([LIBCFS_KERNEL_PARAM_LOCK],[
609 LB2_MSG_LINUX_TEST_RESULT([does function 'kernel_param_[un]lock' exist],
610 [kernel_param_lock], [
611 AC_DEFINE(HAVE_KERNEL_PARAM_LOCK, 1,
612 ['kernel_param_[un]lock' is available])
614 ]) # LIBCFS_KERNEL_PARAM_LOCK
617 # LIBCFS_STRSCPY_EXISTS
619 # Linux commit v4.2-rc1-2-g30035e45753b
620 # string: provide strscpy()
622 # If strscpy exists, prefer it over strlcpy
624 AC_DEFUN([LIBCFS_SRC_STRSCPY_EXISTS], [
625 LB2_LINUX_TEST_SRC([strscpy_exists], [
626 #include <linux/string.h>
630 strscpy(buf, "something", sizeof(buf));
633 AC_DEFUN([LIBCFS_STRSCPY_EXISTS], [
634 LB2_MSG_LINUX_TEST_RESULT([if kernel strscpy is available],
636 AC_DEFINE(HAVE_STRSCPY, 1,
637 [kernel strscpy is available])
639 ]) # LIBCFS_STRSCPY_EXISTS
642 # Kernel version 4.2 changed topology_thread_cpumask
643 # to topology_sibling_cpumask
645 AC_DEFUN([LIBCFS_SRC_HAVE_TOPOLOGY_SIBLING_CPUMASK],[
646 LB2_LINUX_TEST_SRC([topology_sibling_cpumask], [
647 #include <linux/topology.h>
649 const struct cpumask *mask;
651 mask = topology_sibling_cpumask(0);
654 AC_DEFUN([LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK],[
655 LB2_MSG_LINUX_TEST_RESULT([does function 'topology_sibling_cpumask' exist],
656 [topology_sibling_cpumask], [
657 AC_DEFINE(HAVE_TOPOLOGY_SIBLING_CPUMASK, 1,
658 [topology_sibling_cpumask is available])
660 ]) # LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
663 # Kernel version 4.4 commit ef951599074ba4fad2d0efa0a977129b41e6d203
664 # introduced kstrtobool and kstrtobool_from_user.
666 AC_DEFUN([LIBCFS_SRC_KSTRTOBOOL_FROM_USER], [
667 LB2_LINUX_TEST_SRC([kstrtobool_from_user], [
668 #include <linux/kernel.h>
671 return kstrtobool_from_user(NULL, 0, &result);
674 AC_DEFUN([LIBCFS_KSTRTOBOOL_FROM_USER], [
675 LB2_MSG_LINUX_TEST_RESULT([if Linux kernel has 'kstrtobool_from_user'],
676 [kstrtobool_from_user], [
677 AC_DEFINE(HAVE_KSTRTOBOOL_FROM_USER, 1,
678 [kernel has kstrtobool_from_user])
680 ]) # LIBCFS_KSTRTOBOOL_FROM_USER
683 # LIBCFS_NETLINK_CALLBACK_START
685 # Kernel version 4.4-rc3 commit fc9e50f5a5a4e1fa9ba2756f745a13e693cf6a06
686 # added a start function callback for struct netlink_callback
688 AC_DEFUN([LIBCFS_SRC_NETLINK_CALLBACK_START], [
689 LB2_LINUX_TEST_SRC([cb_start], [
690 #include <net/genetlink.h>
697 AC_DEFUN([LIBCFS_NETLINK_CALLBACK_START], [
698 LB2_MSG_LINUX_TEST_RESULT([if struct genl_ops has start callback],
700 AC_DEFINE(HAVE_NETLINK_CALLBACK_START, 1,
701 [struct genl_ops has 'start' callback])
703 ]) # LIBCFS_NETLINK_CALLBACK_START
706 # Kernel version 4.5-rc1 commit d12481bc58fba89427565f8592e88446ec084a24
707 # added crypto hash helpers
709 AC_DEFUN([LIBCFS_SRC_CRYPTO_HASH_HELPERS], [
710 LB2_LINUX_TEST_SRC([crypto_hash_helpers], [
711 #include <crypto/hash.h>
713 crypto_ahash_alg_name(NULL);
714 crypto_ahash_driver_name(NULL);
717 AC_DEFUN([LIBCFS_CRYPTO_HASH_HELPERS], [
718 LB2_MSG_LINUX_TEST_RESULT([does crypto hash helper functions exist],
719 [crypto_hash_helpers], [
720 AC_DEFINE(HAVE_CRYPTO_HASH_HELPERS, 1,
721 [crypto hash helper functions are available])
723 ]) # LIBCFS_CRYPTO_HASH_HELPERS
726 # Kernel version 4.5-rc1 commit 3502cad73c4bbf8f6365d539e814159275252c59
727 # introduced rhashtable_replace_fast
729 AC_DEFUN([LIBCFS_SRC_RHASHTABLE_REPLACE], [
730 LB2_LINUX_TEST_SRC([rhashtable_replace_fast], [
731 #include <linux/rhashtable.h>
733 const struct rhashtable_params params = { 0 };
735 rhashtable_replace_fast(NULL, NULL, NULL, params);
738 AC_DEFUN([LIBCFS_RHASHTABLE_REPLACE], [
739 LB2_MSG_LINUX_TEST_RESULT([if 'rhashtable_replace_fast' exists],
740 [rhashtable_replace_fast], [
741 AC_DEFINE(HAVE_RHASHTABLE_REPLACE, 1,
742 [rhashtable_replace_fast() is available])
744 ]) # LIBCFS_RHASHTABLE_REPLACE
747 # Kernel version 4.5-rc3 commit 2fe829aca9d7bed5fd6b49c6a1452e5e486b6cc3dd
748 # made kset_find_obj() exportable to modules
750 AC_DEFUN([LIBCFS_EXPORT_KSET_FIND_OBJ], [
751 LB_CHECK_EXPORT([kset_find_obj], [lib/kobject.c],
752 [AC_DEFINE(HAVE_KSET_FIND_OBJ, 1,
753 [kset_find_obj is exported by the kernel])])
754 ]) # LIBCFS_EXPORT_KSET_FIND_OBJ
757 # Kernel version 4.6+ commit ef703f49a6c5b909a85149bb6625c4ed0d697186
758 # fixed the brokenness of hash_64(). The fix removed GOLDEN_RATIO_PRIME_64
759 # since it was a poor prime value.
761 AC_DEFUN([LIBCFS_SRC_BROKEN_HASH_64], [
762 LB2_LINUX_TEST_SRC([broken_hash_64], [
763 #include <linux/hash.h>
765 int tmp = GOLDEN_RATIO_PRIME_64;
768 AC_DEFUN([LIBCFS_BROKEN_HASH_64], [
769 LB2_MSG_LINUX_TEST_RESULT([kernel has fixed hash_64()],
771 AC_DEFINE(HAVE_BROKEN_HASH_64, 1, [kernel hash_64() is broken])
773 ]) # LIBCFS_BROKEN_HASH_64
776 # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
778 # linux 4.6 kernel changed stacktrace_ops address to return an int
780 AC_DEFUN([LIBCFS_SRC_STACKTRACE_OPS_ADDRESS_RETURN_INT], [
781 LB2_LINUX_TEST_SRC([stacktrace_ops_address_return_int], [
782 #include <asm/stacktrace.h>
786 rc = ((struct stacktrace_ops *)0)->address(NULL, 0, 0);
789 AC_DEFUN([LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT], [
790 LB2_MSG_LINUX_TEST_RESULT([if 'struct stacktrace_ops' address function returns an int],
791 [stacktrace_ops_address_return_int], [
792 AC_DEFINE(STACKTRACE_OPS_ADDRESS_RETURN_INT, 1,
793 ['struct stacktrace_ops' address function returns an int])
795 ]) # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
798 # Kernel version 4.6 removed both struct task_struct and struct mm_struct
799 # arguments to get_user_pages
801 AC_DEFUN([LIBCFS_SRC_GET_USER_PAGES_6ARG], [
802 LB2_LINUX_TEST_SRC([get_user_pages_6arg], [
803 #include <linux/mm.h>
807 rc = get_user_pages(0, 0, 0, 0, NULL, NULL);
810 AC_DEFUN([LIBCFS_GET_USER_PAGES_6ARG], [
811 LB2_MSG_LINUX_TEST_RESULT([if 'get_user_pages()' takes 6 arguments],
812 [get_user_pages_6arg], [
813 AC_DEFINE(HAVE_GET_USER_PAGES_6ARG, 1,
814 [get_user_pages takes 6 arguments])
816 ]) # LIBCFS_GET_USER_PAGES_6ARG
821 # 4.6 kernel created stringhash.h which moved stuff out of dcache.h
822 # commit f4bcbe792b8f434e32487cff9d9e30ab45a3ce02
824 AC_DEFUN([LIBCFS_SRC_STRINGHASH], [
825 LB2_CHECK_LINUX_HEADER_SRC([linux/stringhash.h], [-Werror])
827 AC_DEFUN([LIBCFS_STRINGHASH], [
828 LB2_CHECK_LINUX_HEADER_RESULT([linux/stringhash.h], [
829 AC_DEFINE(HAVE_STRINGHASH, 1,
830 [stringhash.h is present])
832 ]) # LIBCFS_STRINGHASH
835 # LIBCFS_RHASHTABLE_INSERT_FAST
837 # 4.7+ kernel commit 5ca8cc5bf11faed257c762018aea9106d529232f
838 # changed __rhashtable_insert_fast to support the new function
839 # rhashtable_lookup_get_insert_key().
841 AC_DEFUN([LIBCFS_SRC_RHASHTABLE_INSERT_FAST], [
842 LB2_LINUX_TEST_SRC([rhashtable_insert_fast], [
843 #include <linux/rhashtable.h>
845 const struct rhashtable_params params = { 0 };
848 rc = __rhashtable_insert_fast(NULL, NULL, NULL, params);
852 AC_DEFUN([LIBCFS_RHASHTABLE_INSERT_FAST], [
853 LB2_MSG_LINUX_TEST_RESULT([if internal '__rhashtable_insert_fast()' returns int],
854 [rhashtable_insert_fast], [
855 AC_DEFINE(HAVE_HASHTABLE_INSERT_FAST_RETURN_INT, 1,
856 ['__rhashtable_insert_fast()' returns int])
858 ]) # LIBCFS_RHASHTABLE_INSERT_FAST
861 # LIBCFS_HAVE_NR_ZONE_WRITE_PENDING
863 # kernel v4.7-5966-g5a1c84b404a7
864 # mm: remove reclaim and compaction retry approximations
866 AC_DEFUN([LIBCFS_SRC_HAVE_NR_ZONE_WRITE_PENDING], [
867 LB2_LINUX_TEST_SRC([nr_zone_write_pending_exists], [
868 #include <linux/mmzone.h>
870 enum zone_stat_item item = NR_ZONE_WRITE_PENDING;
874 AC_DEFUN([LIBCFS_HAVE_NR_ZONE_WRITE_PENDING], [
875 LB2_MSG_LINUX_TEST_RESULT([if NR_ZONE_WRITE_PENDING is available],
876 [nr_zone_write_pending_exists], [
877 AC_DEFINE(HAVE_NR_ZONE_WRITE_PENDING, 1,
878 [NR_ZONE_WRITE_PENDING is still in use.])
880 ]) # LIBCFS_HAVE_NR_ZONE_WRITE_PENDING
883 # Kernel version 4.7-rc1 commit 8f6fd83c6c5ec66a4a70c728535ddcdfef4f3697
884 # added 3rd arg to rhashtable_walk_init
886 AC_DEFUN([LIBCFS_SRC_RHASHTABLE_WALK_INIT_3ARG], [
887 LB2_LINUX_TEST_SRC([rhashtable_walk_init], [
888 #include <linux/gfp.h>
889 #include <linux/rhashtable.h>
891 rhashtable_walk_init(NULL, NULL, GFP_KERNEL);
894 AC_DEFUN([LIBCFS_RHASHTABLE_WALK_INIT_3ARG], [
895 LB2_MSG_LINUX_TEST_RESULT([if 'rhashtable_walk_init' has 3 args],
896 [rhashtable_walk_init], [
897 AC_DEFINE(HAVE_3ARG_RHASHTABLE_WALK_INIT, 1,
898 [rhashtable_walk_init() has 3 args])
900 ]) # LIBCFS_RHASHTABLE_WALK_INIT_3ARG
903 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
904 # introduced rhashtable_lookup
906 AC_DEFUN([LIBCFS_SRC_RHASHTABLE_LOOKUP], [
907 LB2_LINUX_TEST_SRC([rhashtable_lookup], [
908 #include <linux/rhashtable.h>
910 const struct rhashtable_params params = { 0 };
913 ret = rhashtable_lookup(NULL, NULL, params);
916 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP], [
917 LB2_MSG_LINUX_TEST_RESULT([if 'rhashtable_lookup' exist],
918 [rhashtable_lookup], [
919 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP, 1,
920 [rhashtable_lookup() is available])
922 ]) # LIBCFS_RHASHTABLE_LOOKUP
926 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
927 # created the rhlist interface to allow inserting duplicate objects
928 # into the same table.
930 AC_DEFUN([LIBCFS_SRC_RHLTABLE], [
931 LB2_LINUX_TEST_SRC([rhtable], [
932 #include <linux/rhashtable.h>
934 struct rhltable *hlt = NULL;
936 rhltable_destroy(hlt);
939 AC_DEFUN([LIBCFS_RHLTABLE], [
940 LB2_MSG_LINUX_TEST_RESULT([does 'struct rhltable' exist],
942 AC_DEFINE(HAVE_RHLTABLE, 1, [struct rhltable exist])
947 # LIBCFS_STACKTRACE_OPS
949 # Kernel version 4.8 commit c8fe4609827aedc9c4b45de80e7cdc8ccfa8541b
950 # removed both struct stacktrace_ops and dump_trace() function
952 AC_DEFUN([LIBCFS_SRC_STACKTRACE_OPS], [
953 LB2_LINUX_TEST_SRC([stacktrace_ops], [
956 #include <asm/stacktrace.h>
958 struct stacktrace_ops ops;
962 AC_DEFUN([LIBCFS_STACKTRACE_OPS], [
963 LB2_MSG_LINUX_TEST_RESULT([if 'struct stacktrace_ops' exists],
965 AC_DEFINE(HAVE_STACKTRACE_OPS, 1,
966 [struct stacktrace_ops exists])
968 ]) # LIBCFS_STACKTRACE_OPS
971 # LIBCFS_RHASHTABLE_WALK_ENTER
973 # Kernel version 4.9-rc1 commit 246779dd090bd1b74d2652b3a6ca7759f593b27a
974 # introduced rhashtable_walk_enter
976 AC_DEFUN([LIBCFS_SRC_RHASHTABLE_WALK_ENTER], [
977 LB2_LINUX_TEST_SRC([rhashtable_walk_enter], [
978 #include <linux/rhashtable.h>
980 rhashtable_walk_enter(NULL, NULL);
983 AC_DEFUN([LIBCFS_RHASHTABLE_WALK_ENTER], [
984 LB2_MSG_LINUX_TEST_RESULT([if 'rhashtable_walk_enter' exists],
985 [rhashtable_walk_enter], [
986 AC_DEFINE(HAVE_RHASHTABLE_WALK_ENTER, 1,
987 [rhashtable_walk_enter() is available])
989 ]) # LIBCFS_RHASHTABLE_WALK_ENTER
992 # Kernel version 4.9 commit 768ae309a96103ed02eb1e111e838c87854d8b51
993 # mm: replace get_user_pages() write/force parameters with gup_flags
995 AC_DEFUN([LIBCFS_SRC_GET_USER_PAGES_GUP_FLAGS], [
996 LB2_LINUX_TEST_SRC([get_user_pages_gup_flags], [
997 #include <linux/mm.h>
1000 rc = get_user_pages(0, 0, FOLL_WRITE, NULL, NULL);
1003 AC_DEFUN([LIBCFS_GET_USER_PAGES_GUP_FLAGS], [
1004 LB2_MSG_LINUX_TEST_RESULT([if 'get_user_pages()' takes gup_flags in arguments],
1005 [get_user_pages_gup_flags], [
1006 AC_DEFINE(HAVE_GET_USER_PAGES_GUP_FLAGS, 1,
1007 [get_user_pages takes gup_flags in arguments])
1009 ]) # LIBCFS_GET_USER_PAGES_GUP_FLAGS
1012 # LIBCFS_HOTPLUG_STATE_MACHINE
1014 # Linux commit v4.9-12227-g7b737965b331 introduced
1015 # staging/lustre/libcfs: Convert to hotplug state machine
1016 # Which introduced: CPUHP_LUSTRE_CFS_DEAD
1018 # Linux commit v4.10-rc1-5-g4205e4786d0b
1019 # cpu/hotplug: Provide dynamic range for prepare stage
1020 # Which introduced: CPUHP_BP_PREPARE_DYN
1022 # Linux commit v6.7-rc2-1-g15bece7bec0d
1023 # cpu/hotplug: Remove unused CPU hotplug states
1024 # Which removed: CPUHP_LUSTRE_CFS_DEAD
1026 # With no distro kernels between 4.10 and 4.11 switch to CPUHP_BP_PREPARE_DYN
1028 AC_DEFUN([LIBCFS_SRC_HOTPLUG_STATE_MACHINE], [
1029 LB2_LINUX_TEST_SRC([cpu_hotplug_state_machine], [
1030 #include <linux/cpuhotplug.h>
1032 cpuhp_remove_state(CPUHP_BP_PREPARE_DYN);
1035 AC_DEFUN([LIBCFS_HOTPLUG_STATE_MACHINE], [
1036 LB2_MSG_LINUX_TEST_RESULT([if libcfs supports CPU hotplug state machine],
1037 [cpu_hotplug_state_machine], [
1038 AC_DEFINE(HAVE_HOTPLUG_STATE_MACHINE, 1,
1039 [hotplug state machine is supported])
1041 ]) # LIBCFS_HOTPLUG_STATE_MACHINE
1046 # Kernel version 4.10-rc3 commit f405df5de3170c00e5c54f8b7cf4766044a032ba
1047 # introduced refcount_t which is atomic_t plus over flow guards.
1049 AC_DEFUN([LIBCFS_SRC_REFCOUNT_T], [
1050 LB2_CHECK_LINUX_HEADER_SRC([linux/refcount.h], [-Werror])
1052 AC_DEFUN([LIBCFS_REFCOUNT_T], [
1053 LB2_CHECK_LINUX_HEADER_RESULT([linux/refcount.h], [
1054 AC_DEFINE(HAVE_REFCOUNT_T, 1,
1055 [refcount_t is supported])
1057 ]) # LIBCFS_REFCOUNT_T
1060 # Kernel version 4.12 commit 499118e966f1d2150bd66647c8932343c4e9a0b8
1061 # introduce memalloc_noreclaim_{save,restore}
1063 AC_DEFUN([LIBCFS_SRC_MEMALLOC_NORECLAIM], [
1064 LB2_LINUX_TEST_SRC([memalloc_noreclaim], [
1065 #include <linux/sched/mm.h>
1067 int flag = memalloc_noreclaim_save();
1068 memalloc_noreclaim_restore(flag);
1071 AC_DEFUN([LIBCFS_MEMALLOC_NORECLAIM], [
1072 LB2_MSG_LINUX_TEST_RESULT([if memalloc_noreclaim_{save,restore} exist],
1073 [memalloc_noreclaim], [
1074 AC_DEFINE(HAVE_MEMALLOC_RECLAIM, 1,
1075 [memalloc_noreclaim_{save,restore}() is supported])
1077 ]) # LIBCFS_MEMALLOC_NORECLAIM
1080 # LIBCFS_SCHED_HEADERS
1082 # 4.11 has broken up sched.h into more headers.
1084 AC_DEFUN([LIBCFS_SRC_SCHED_HEADERS], [
1085 LB2_CHECK_LINUX_HEADER_SRC([linux/sched/signal.h], [-Werror])
1087 AC_DEFUN([LIBCFS_SCHED_HEADERS], [
1088 LB2_CHECK_LINUX_HEADER_RESULT([linux/sched/signal.h], [
1089 AC_DEFINE(HAVE_SCHED_HEADERS, 1,
1090 [linux/sched header directory exist])
1092 ]) # LIBCFS_SCHED_HEADERS
1095 # Kernel version 4.11-rc1 commit 2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e
1096 # introduce kref_read
1098 AC_DEFUN([LIBCFS_SRC_KREF_READ], [
1099 LB2_LINUX_TEST_SRC([kref_read], [
1100 #include <linux/kref.h>
1105 AC_DEFUN([LIBCFS_KREF_READ], [
1106 LB2_MSG_LINUX_TEST_RESULT([if 'kref_read' exists],
1108 AC_DEFINE(HAVE_KREF_READ, 1, [kref_read() is available])
1110 ]) # LIBCFS_KREF_READ
1113 # Kernel version 4.11-rc1 commit da20420f83ea0fbcf3d03afda08d971ea1d8a356
1114 # introduced rht_bucket_var
1116 AC_DEFUN([LIBCFS_SRC_RHT_BUCKET_VAR], [
1117 LB2_LINUX_TEST_SRC([rht_bucket_var], [
1118 #include <linux/rhashtable.h>
1120 rht_bucket_var(NULL, 0);
1123 AC_DEFUN([LIBCFS_RHT_BUCKET_VAR], [
1124 LB2_MSG_LINUX_TEST_RESULT([if 'rht_bucket_var' exists],
1126 AC_DEFINE(HAVE_RHT_BUCKET_VAR, 1,
1127 [rht_bucket_var() is available])
1129 ]) # LIBCFS_RHT_BUCKET_VAR
1132 # Kernel version 4.11-rc5 commit fceb6435e85298f747fee938415057af837f5a8a
1133 # began the enhanchement of Netlink with extended ACK struct for advanced
1134 # error handling. By commit 7ab606d1609dd6dfeae9c8ad0a8a4e051d831e46 we
1135 # had full support for this new feature.
1137 AC_DEFUN([LIBCFS_SRC_NL_EXT_ACK], [
1138 LB2_LINUX_TEST_SRC([netlink_ext_ack], [
1139 #include <net/genetlink.h>
1141 struct genl_info info;
1146 AC_DEFUN([LIBCFS_NL_EXT_ACK], [
1147 LB2_MSG_LINUX_TEST_RESULT([if Netlink supports netlink_ext_ack],
1148 [netlink_ext_ack], [
1149 AC_DEFINE(HAVE_NL_PARSE_WITH_EXT_ACK, 1,
1150 [netlink_ext_ack is an argument to nla_parse type function])
1152 ]) # LIBCFS_NL_EXT_ACK
1155 # Kernel version 4.11 commit f9fe1c12d126f9887441fa5bb165046f30ddd4b5
1156 # introduced rhashtable_lookup_get_insert_fast
1158 AC_DEFUN([LIBCFS_SRC_RHASHTABLE_LOOKUP_GET_INSERT_FAST], [
1159 LB2_LINUX_TEST_SRC([rhashtable_lookup_get_insert_fast], [
1160 #include <linux/rhashtable.h>
1162 const struct rhashtable_params params = { 0 };
1165 ret = rhashtable_lookup_get_insert_fast(NULL, NULL, params);
1168 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST], [
1169 LB2_MSG_LINUX_TEST_RESULT([if 'rhashtable_lookup_get_insert_fast' exist],
1170 [rhashtable_lookup_get_insert_fast], [
1171 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP_GET_INSERT_FAST, 1,
1172 [rhashtable_lookup_get_insert_fast() is available])
1174 ]) # LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
1177 # Kernel version 4.12-rc2 8f553c498e1772cccb39a114da4a498d22992758
1178 # provide proper CPU hotplug locking
1180 AC_DEFUN([LIBCFS_SRC_CPUS_READ_LOCK], [
1181 LB2_LINUX_TEST_SRC([cpu_read_lock], [
1182 #include <linux/cpu.h>
1188 AC_DEFUN([LIBCFS_CPUS_READ_LOCK], [
1189 LB2_MSG_LINUX_TEST_RESULT([if 'cpus_read_[un]lock' exist],
1191 AC_DEFINE(HAVE_CPUS_READ_LOCK, 1, ['cpus_read_lock' exist])
1193 ]) # LIBCFS_CPUS_READ_LOCK
1196 # LIBCFS_HAVE_PROCESSOR_HEADER
1198 # Kernel version 4.12-rc3 commit fd851a3cdc196bfc1d229b5f22369069af532bf8
1199 # introduce processor.h
1201 AC_DEFUN([LIBCFS_SRC_HAVE_PROCESSOR_HEADER], [
1202 LB2_CHECK_LINUX_HEADER_SRC([linux/processor.h], [-Werror])
1204 AC_DEFUN([LIBCFS_HAVE_PROCESSOR_HEADER], [
1205 LB2_CHECK_LINUX_HEADER_RESULT([linux/processor.h], [
1206 AC_DEFINE(HAVE_PROCESSOR_H, 1,
1207 [processor.h is present])
1209 ]) # LIBCFS_HAVE_PROCESSOR_HEADER
1212 # LIBCFS_HAVE_WAIT_BIT_HEADER
1214 # Kernel verison 4.12-rc6 commit 5dd43ce2f69d42a71dcacdb13d17d8c0ac1fe8f7
1215 # created wait_bit.h
1217 AC_DEFUN([LIBCFS_SRC_HAVE_WAIT_BIT_HEADER], [
1218 LB2_CHECK_LINUX_HEADER_SRC([linux/wait_bit.h], [-Werror])
1220 AC_DEFUN([LIBCFS_HAVE_WAIT_BIT_HEADER], [
1221 LB2_CHECK_LINUX_HEADER_RESULT([linux/wait_bit.h], [
1222 AC_DEFINE(HAVE_WAIT_BIT_HEADER_H, 1,
1223 [wait_bit.h is present])
1225 ]) # LIBCFS_HAVE_PROCESSOR_HEADER
1228 # Kernel version 4.12-rc6 commmit 2055da97389a605c8a00d163d40903afbe413921
1230 # struct wait_queue_head::task_list => ::head
1231 # struct wait_queue_entry::task_list => ::entry
1233 AC_DEFUN([LIBCFS_SRC_WAIT_QUEUE_TASK_LIST_RENAME], [
1234 LB2_LINUX_TEST_SRC([wait_queue_task_list], [
1235 #include <linux/wait.h>
1237 wait_queue_head_t e;
1239 INIT_LIST_HEAD(&e.head);
1242 AC_DEFUN([LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME], [
1243 LB2_MSG_LINUX_TEST_RESULT([if linux wait_queue_head list_head is named head],
1244 [wait_queue_task_list], [
1245 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY_LIST, 1,
1246 [linux wait_queue_head_t list_head is name head])
1248 ]) # LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
1251 # LIBCFS_WAIT_BIT_QUEUE_ENTRY_EXISTS
1253 # Kernel version v4.12-rc6-23-g76c85ddc4695
1254 # sched/wait: Standardize wait_bit_queue naming
1256 # renamed struct wait_bit_queue => wait_bit_queue_entry
1258 AC_DEFUN([LIBCFS_SRC_WAIT_BIT_QUEUE_ENTRY_EXISTS], [
1259 LB2_LINUX_TEST_SRC([struct_wait_bit_queue_entry_exists], [
1260 #include <linux/wait.h>
1261 #if HAVE_WAIT_BIT_HEADER_H
1262 #include <linux/wait_bit.h>
1265 struct wait_bit_queue_entry entry;
1266 memset(&entry, 0, sizeof(entry));
1269 AC_DEFUN([LIBCFS_WAIT_BIT_QUEUE_ENTRY_EXISTS], [
1270 LB2_MSG_LINUX_TEST_RESULT([if struct wait_bit_queue_entry exists],
1271 [struct_wait_bit_queue_entry_exists], [
1272 AC_DEFINE(HAVE_WAIT_BIT_QUEUE_ENTRY, 1,
1273 [if struct wait_bit_queue_entry exists])
1275 ]) # LIBCFS_WAIT_BIT_QUEUE_ENTRY_EXISTS
1280 # Kernel version 4.13-rc1 commit 2cf0c8b3e6942ecafe6ebb1a6d0328a81641bf39
1281 # created nla_strdup(). This is needed since push strings can be
1284 AC_DEFUN([LIBCFS_SRC_NLA_STRDUP], [
1285 LB2_LINUX_TEST_SRC([nla_strdup], [
1286 #include <net/netlink.h>
1288 char *tmp = nla_strdup(NULL, GFP_KERNEL);
1292 AC_DEFUN([LIBCFS_NLA_STRDUP], [
1293 LB2_MSG_LINUX_TEST_RESULT([if 'nla_strdup()' exists],
1295 AC_DEFINE(HAVE_NLA_STRDUP, 1,
1296 ['nla_strdup' is available])
1298 ]) # LIBCFS_NLA_STRDUP
1301 # LIBCFS_WAIT_QUEUE_ENTRY
1303 # Kernel version 4.13 ac6424b981bce1c4bc55675c6ce11bfe1bbfa64f
1304 # Rename wait_queue_t => wait_queue_entry_t
1306 AC_DEFUN([LIBCFS_SRC_WAIT_QUEUE_ENTRY], [
1307 LB2_LINUX_TEST_SRC([wait_queue_entry], [
1308 #include <linux/wait.h>
1310 wait_queue_entry_t e;
1315 AC_DEFUN([LIBCFS_WAIT_QUEUE_ENTRY], [
1316 LB2_MSG_LINUX_TEST_RESULT([if 'wait_queue_entry_t' exists],
1317 [wait_queue_entry], [
1318 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY, 1,
1319 ['wait_queue_entry_t' is available])
1321 ]) # LIBCFS_WAIT_QUEUE_ENTRY
1324 # LIBCFS_NEW_KERNEL_WRITE
1326 # Kernel version 4.14 e13ec939e96b13e664bb6cee361cc976a0ee621a
1327 # changed kernel_write prototype to make is plug compatible
1328 # with the unexported vfs_write()
1330 AC_DEFUN([LIBCFS_SRC_NEW_KERNEL_WRITE], [
1331 LB2_LINUX_TEST_SRC([kernel_write_match], [
1332 #include <linux/fs.h>
1334 const void *buf = NULL;
1336 return kernel_write(NULL, buf, 0, &pos);
1339 AC_DEFUN([LIBCFS_NEW_KERNEL_WRITE], [
1340 LB2_MSG_LINUX_TEST_RESULT([if 'kernel_write' matches other read/write helpers],
1341 [kernel_write_match], [
1342 AC_DEFINE(HAVE_NEW_KERNEL_WRITE, 1,
1343 ['kernel_write' aligns with read/write helpers])
1345 ]) # LIBCFS_NEW_KERNEL_WRITE
1348 # LIBCFS_MM_TOTALRAM_PAGES_FUNC
1350 # kernel 5.0 commit ca79b0c211af63fa3276f0e3fd7dd9ada2439839
1351 # mm: convert totalram_pages and totalhigh_pages variables to atomic
1353 AC_DEFUN([LIBCFS_SRC_MM_TOTALRAM_PAGES_FUNC], [
1354 LB2_LINUX_TEST_SRC([totalram_pages], [
1355 #include <linux/mm.h>
1357 totalram_pages_inc();
1360 AC_DEFUN([LIBCFS_MM_TOTALRAM_PAGES_FUNC], [
1361 LB2_MSG_LINUX_TEST_RESULT([if totalram_pages is a function],
1363 AC_DEFINE(HAVE_TOTALRAM_PAGES_AS_FUNC, 1,
1364 [if totalram_pages is a function])
1366 ]) # LIBCFS_MM_TOTALRAM_PAGES_FUNC
1369 # LIBCFS_NEW_KERNEL_READ
1371 # 4.14 commit bdd1d2d3d251c65b74ac4493e08db18971c09240 changed
1372 # the signature of kernel_read to match other read/write helpers
1373 # and place offset last.
1375 AC_DEFUN([LIBCFS_SRC_NEW_KERNEL_READ], [
1376 LB2_LINUX_TEST_SRC([kernel_read], [
1377 #include <linux/fs.h>
1380 kernel_read(NULL, NULL, 0, &pos);
1383 AC_DEFUN([LIBCFS_NEW_KERNEL_READ], [
1384 LB2_MSG_LINUX_TEST_RESULT([if 'kernel_read()' has loff_t *pos as last parameter],
1386 AC_DEFINE(HAVE_KERNEL_READ_LAST_POSP, 1,
1387 [kernel_read() signature ends with loff_t *pos])
1389 ]) # LIBCFS_NEW_KERNEL_READ
1392 # LIBCFS_DEFINE_TIMER
1394 # Kernel version 4.14 commit 1d27e3e2252ba9d949ca82fbdb73cde102cb2067
1395 # remove expires and data arguments from DEFINE_TIMER. Also the callback
1396 # when from using unsigned long argument to using struct timer_list pointer.
1398 AC_DEFUN([LIBCFS_SRC_DEFINE_TIMER], [
1399 LB2_LINUX_TEST_SRC([define_timer], [
1400 #include <linux/timer.h>
1402 static DEFINE_TIMER(my_timer, NULL);
1405 AC_DEFUN([LIBCFS_DEFINE_TIMER], [
1406 LB2_MSG_LINUX_TEST_RESULT([if DEFINE_TIMER takes only 2 arguments],
1408 AC_DEFINE(HAVE_NEW_DEFINE_TIMER, 1,
1409 [DEFINE_TIMER uses only 2 arguements])
1411 ]) # LIBCFS_DEFINE_TIMER
1414 # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1416 # Kernel 2.6.27 commit 8594698ebddeef5443b7da8258ae33b3eaca61d5
1417 # exported save_stack_trace_tsk for x86.
1418 # Kernel 2.6.27 commit 01f4b8b8b8db09b88be7df7e51192e4e678b69d3
1419 # exported save_stack_trace_tsk for powerpc
1420 # Kernel 4.13 commit e27c7fa015d61c8be6a2c32b2144aad2ae6ec975
1421 # exported save_stack_trace_tsk for arm64
1422 # Kernel 4.14 commit 9a3dc3186fc3795e076a4122da9e0258651a9631
1423 # exported save_stack_trace_tsk for arm
1425 AC_DEFUN([LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK], [
1426 LB_CHECK_EXPORT([save_stack_trace_tsk], [arch/$SUBARCH/kernel/stacktrace.c],
1427 [AC_DEFINE(HAVE_SAVE_STACK_TRACE_TSK, 1,
1428 [save_stack_trace_tsk is exported])])
1429 ]) # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1432 # LIBCFS_LOCKDEP_IS_HELD
1434 # Kernel v4.15-rc8-106-g08f36ff64234
1435 # lockdep: Make lockdep checking constant
1437 AC_DEFUN([LIBCFS_SRC_LOCKDEP_IS_HELD], [
1438 LB2_LINUX_TEST_SRC([lockdep_is_held], [
1439 #include <linux/lockdep.h>
1441 #ifdef CONFIG_LOCKDEP
1442 const struct spinlock *lock = NULL;
1444 lockdep_is_held(lock);
1448 AC_DEFUN([LIBCFS_LOCKDEP_IS_HELD], [
1449 LB2_MSG_LINUX_TEST_RESULT([if 'lockdep_is_held()' uses const argument],
1450 [lockdep_is_held], [
1452 AC_DEFINE(NEED_LOCKDEP_IS_HELD_DISCARD_CONST, 1,
1453 [lockdep_is_held() argument is const])
1455 ]) # LIBCFS_LOCKDEP_IS_HELD
1458 # LIBCFS_BITMAP_TO_ARR32
1460 # Kernel commit v4.15-10794-gc724f19 introduced
1461 # bitmap_{from,to}_arr32, which are handy functions, to move
1462 # data back and forth between a bitmap and a u32 array
1464 AC_DEFUN([LIBCFS_SRC_BITMAP_TO_ARR32], [
1465 LB2_LINUX_TEST_SRC([bitmap_to_arr32], [
1466 #include <linux/bitmap.h>
1468 bitmap_to_arr32(NULL, NULL, 0);
1471 AC_DEFUN([LIBCFS_BITMAP_TO_ARR32], [
1472 LB2_MSG_LINUX_TEST_RESULT([if 'bitmap_to_arr32()' exist],
1473 [bitmap_to_arr32], [
1474 AC_DEFINE(HAVE_BITMAP_TO_ARR32, 1,
1475 [bitmap_to_arr32() exist])
1477 ]) # LIBCFS_BITMAP_TO_ARR32
1480 # LIBCFS_TIMER_SETUP
1482 # Kernel version 4.15 commit e99e88a9d2b067465adaa9c111ada99a041bef9a
1483 # setup_timer() was replaced by timer_setup(), where the callback
1484 # argument is the structure already holding the struct timer_list.
1486 AC_DEFUN([LIBCFS_SRC_TIMER_SETUP], [
1487 LB2_LINUX_TEST_SRC([timer_setup], [
1488 #include <linux/timer.h>
1490 timer_setup(NULL, NULL, 0);
1493 AC_DEFUN([LIBCFS_TIMER_SETUP], [
1494 LB2_MSG_LINUX_TEST_RESULT([if setup_timer has been replaced with timer_setup],
1496 AC_DEFINE(HAVE_TIMER_SETUP, 1,
1497 [timer_setup has replaced setup_timer])
1499 ]) # LIBCFS_TIMER_SETUP
1502 # LIBCFS_WAIT_VAR_EVENT
1504 # Kernel version 4.16-rc4 commit 6b2bb7265f0b62605e8caee3613449ed0db270b9
1505 # added wait_var_event()
1507 AC_DEFUN([LIBCFS_SRC_WAIT_VAR_EVENT], [
1508 if test "x$lb_cv_header_linux_wait_bit_h" = xyes; then
1509 WAIT_BIT_H="-DHAVE_WAIT_BIT_HEADER_H=1"
1513 LB2_LINUX_TEST_SRC([wait_var_event], [
1514 #ifdef HAVE_WAIT_BIT_HEADER_H
1515 #include <linux/wait_bit.h>
1517 #include <linux/wait.h>
1522 AC_DEFUN([LIBCFS_WAIT_VAR_EVENT], [
1523 LB2_MSG_LINUX_TEST_RESULT([if 'wait_var_event' exist],
1525 AC_DEFINE(HAVE_WAIT_VAR_EVENT, 1,
1526 ['wait_var_event' is available])
1528 ]) # LIBCFS_WAIT_VAR_EVENT
1531 # LIBCFS_BITMAP_ALLOC
1533 # Kernel version 4.17 commit c42b65e363ce97a828f81b59033c3558f8fa7f70
1534 # added bitmap memory allocation handling.
1536 AC_DEFUN([LIBCFS_SRC_BITMAP_ALLOC], [
1537 LB2_LINUX_TEST_SRC([bitmap_alloc], [
1538 #include <linux/bitmap.h>
1540 unsigned long *map = bitmap_alloc(1, GFP_KERNEL);
1544 AC_DEFUN([LIBCFS_BITMAP_ALLOC], [
1545 LB2_MSG_LINUX_TEST_RESULT([if Linux bitmap memory management exist],
1547 AC_DEFINE(HAVE_BITMAP_ALLOC, 1,
1548 [Linux bitmap can be allocated])
1550 ]) # LIBCFS_BITMAP_ALLOC
1553 # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1555 # Kernel version 4.17-rc2 commit 8236b0ae31c837d2b3a2565c5f8d77f637e824cc
1556 # added clear_and_wake_up_bit()
1558 AC_DEFUN([LIBCFS_SRC_CLEAR_AND_WAKE_UP_BIT], [
1559 if test "x$lb_cv_header_linux_wait_bit_h" = xyes; then
1560 WAIT_BIT_H="-DHAVE_WAIT_BIT_HEADER_H=1"
1564 LB2_LINUX_TEST_SRC([clear_and_wake_up_bit], [
1565 #ifdef HAVE_WAIT_BIT_HEADER_H
1566 #include <linux/wait_bit.h>
1568 #include <linux/wait.h>
1570 clear_and_wake_up_bit(0, NULL);
1573 AC_DEFUN([LIBCFS_CLEAR_AND_WAKE_UP_BIT], [
1574 LB2_MSG_LINUX_TEST_RESULT([if 'clear_and_wake_up_bit' exist],
1575 [clear_and_wake_up_bit], [
1576 AC_DEFINE(HAVE_CLEAR_AND_WAKE_UP_BIT, 1,
1577 ['clear_and_wake_up_bit' is available])
1579 ]) # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1582 # LIBCFS_TCP_SOCK_SET_NODELAY
1584 # kernel 4.18.0-293.el8
1585 # tcp_sock_set_nodelay() was added
1586 AC_DEFUN([LIBCFS_SRC_TCP_SOCK_SET_NODELAY], [
1587 LB2_LINUX_TEST_SRC([tcp_sock_set_nodelay_exists], [
1588 #include <linux/tcp.h>
1590 tcp_sock_set_nodelay(NULL);
1593 AC_DEFUN([LIBCFS_TCP_SOCK_SET_NODELAY], [
1594 LB2_MSG_LINUX_TEST_RESULT([if 'tcp_sock_set_nodelay()' exists],
1595 [tcp_sock_set_nodelay_exists], [
1596 AC_DEFINE(HAVE_TCP_SOCK_SET_NODELAY, 1,
1597 ['tcp_sock_set_nodelay()' exists])
1599 ]) # LIBCFS_TCP_SOCK_SET_NODELAY
1602 # LIBCFS_TCP_SOCK_SET_KEEPIDLE
1604 # kernel 4.18.0-293.el8
1605 # tcp_sock_set_keepidle() was added
1607 AC_DEFUN([LIBCFS_SRC_TCP_SOCK_SET_KEEPIDLE], [
1608 LB2_LINUX_TEST_SRC([tcp_sock_set_keepidle_exists], [
1609 #include <linux/tcp.h>
1611 tcp_sock_set_keepidle(NULL, 0);
1614 AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPIDLE], [
1615 LB2_MSG_LINUX_TEST_RESULT([if 'tcp_sock_set_keepidle()' exists],
1616 [tcp_sock_set_keepidle_exists], [
1617 AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPIDLE, 1,
1618 ['tcp_sock_set_keepidle()' exists])
1620 ]) # LIBCFS_TCP_SOCK_SET_KEEPIDLE
1623 # LIBCFS_TCP_SOCK_SET_QUICKACK
1624 # kernel v5.7-rc6-2504-gddd061b8daed
1625 # tcp: add tcp_sock_set_quickack
1627 AC_DEFUN([LIBCFS_SRC_TCP_SOCK_SET_QUICKACK], [
1628 LB2_LINUX_TEST_SRC([tcp_sock_set_quickack_exists], [
1629 #include <linux/tcp.h>
1631 tcp_sock_set_quickack(NULL, 0);
1634 AC_DEFUN([LIBCFS_TCP_SOCK_SET_QUICKACK], [
1635 LB2_MSG_LINUX_TEST_RESULT([if 'tcp_sock_set_quickack()' exists],
1636 [tcp_sock_set_quickack_exists], [
1637 AC_DEFINE(HAVE_TCP_SOCK_SET_QUICKACK, 1,
1638 ['tcp_sock_set_quickack()' exists])
1640 ]) # LIBCFS_TCP_SOCK_SET_QUICKACK
1643 # LIBCFS_TCP_SOCK_SET_KEEPINTVL
1644 # v5.7-rc6-2508-gd41ecaac903c
1645 # tcp: add tcp_sock_set_keepintvl
1647 AC_DEFUN([LIBCFS_SRC_TCP_SOCK_SET_KEEPINTVL], [
1648 LB2_LINUX_TEST_SRC([tcp_sock_set_keepintvl_exists], [
1649 #include <linux/tcp.h>
1651 tcp_sock_set_keepintvl(NULL, 0);
1654 AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPINTVL], [
1655 LB2_MSG_LINUX_TEST_RESULT([if 'tcp_sock_set_keepintvl()' exists],
1656 [tcp_sock_set_keepintvl_exists], [
1657 AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPINTVL, 1,
1658 ['tcp_sock_set_keepintvl()' exists])
1660 ]) # LIBCFS_TCP_SOCK_SET_KEEPINTVL
1663 # LIBCFS_TCP_SOCK_SET_KEEPCNT
1664 # v5.7-rc6-2509-g480aeb9639d6
1665 # tcp: add tcp_sock_set_keepcnt
1667 AC_DEFUN([LIBCFS_SRC_TCP_SOCK_SET_KEEPCNT], [
1668 LB2_LINUX_TEST_SRC([tcp_sock_set_keepcnt_exists], [
1669 #include <linux/tcp.h>
1671 tcp_sock_set_keepcnt(NULL, 0);
1674 AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPCNT], [
1675 LB2_MSG_LINUX_TEST_RESULT([if 'tcp_sock_set_keepcnt()' exists],
1676 [tcp_sock_set_keepcnt_exists], [
1677 AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPCNT, 1,
1678 ['tcp_sock_set_keepcnt()' exists])
1680 ]) # LIBCFS_TCP_SOCK_SET_KEEPCNT
1683 # LIBCFS_XARRAY_SUPPORT
1685 # 4.19-rc5 kernel commit 3159f943aafdbacb2f94c38fdaadabf2bbde2a14
1686 # replaced the radix tree implementation with Xarrays. This change
1687 # introduced functionaly needed for general Xarray support
1689 AC_DEFUN([LIBCFS_SRC_XARRAY_SUPPORT], [
1690 LB2_LINUX_TEST_SRC([xarray_support], [
1691 #include <linux/xarray.h>
1696 AC_DEFUN([LIBCFS_XARRAY_SUPPORT], [
1697 LB2_MSG_LINUX_TEST_RESULT([if page cache uses Xarray],
1699 AC_DEFINE(HAVE_XARRAY_SUPPORT, 1,
1700 [kernel Xarray implementation lacks 'xa_is_value'])
1702 ]) # LIBCFS_XARRAY_SUPPORT
1705 # LIBCFS_NL_DUMP_EXT_ACK
1707 # Kernel version 4.19-rc6 commit 4a19edb60d0203cd5bf95a8b46ea8f63fd41194c
1708 # added extended ACK handling to Netlink dump handlers
1710 AC_DEFUN([LIBCFS_SRC_NL_DUMP_EXT_ACK], [
1711 LB2_LINUX_TEST_SRC([netlink_dump_ext_ack], [
1712 #include <net/netlink.h>
1714 struct netlink_callback *cb = NULL;
1718 AC_DEFUN([LIBCFS_NL_DUMP_EXT_ACK], [
1719 LB2_MSG_LINUX_TEST_RESULT([if Netlink dump handlers support ext_ack],
1720 [netlink_dump_ext_ack], [
1721 AC_DEFINE(HAVE_NL_DUMP_WITH_EXT_ACK, 1,
1722 [netlink_ext_ack is handled for Netlink dump handlers])
1724 ]) # LIBCFS_NL_DUMP_EXT_ACK
1727 # LIBCFS_HAVE_IOV_ITER_TYPE
1729 # kernel 4.20 commit 00e23707442a75b404392cef1405ab4fd498de6b
1730 # iov_iter: Use accessor functions to access an iterator's type and direction.
1732 AC_DEFUN([LIBCFS_SRC_HAVE_IOV_ITER_TYPE], [
1733 LB2_LINUX_TEST_SRC([macro_iov_iter_type_exists], [
1734 #include <linux/uio.h>
1736 struct iov_iter iter = { };
1737 enum iter_type type = iov_iter_type(&iter);
1741 AC_DEFUN([LIBCFS_HAVE_IOV_ITER_TYPE], [
1742 LB2_MSG_LINUX_TEST_RESULT([if iov_iter_type exists],
1743 [macro_iov_iter_type_exists], [
1744 AC_DEFINE(HAVE_IOV_ITER_TYPE, 1,
1745 [if iov_iter_type exists])
1747 ]) # LIBCFS_HAVE_IOV_ITER_TYPE
1752 # Kernel 5.0 commit ba20ba2e3743bac786dff777954c11930256075e
1753 # implemented generic radix trees to handle very large memory
1754 # allocation that can be used instead of vmalloc which has
1755 # a performance penalty.
1757 AC_DEFUN([LIBCFS_GENRADIX], [
1758 LB_CHECK_EXPORT([__genradix_ptr], [lib/generic-radix-tree.c],
1759 [AC_DEFINE(HAVE_GENRADIX_SUPPORT, 1,
1760 [generic-radix-tree is present])])
1761 ]) # LIBCFS_GENRADIX
1764 # LIBCFS_GET_REQUEST_KEY_AUTH
1766 # kernel 5.0 commit 822ad64d7e46a8e2c8b8a796738d7b657cbb146d
1767 # keys: Fix dependency loop between construction record and auth key
1769 # Added <keys/request_key_auth-type.h> and get_request_key_auth()
1770 # which was propagated to stable
1772 AC_DEFUN([LIBCFS_SRC_GET_REQUEST_KEY_AUTH], [
1773 LB2_LINUX_TEST_SRC([get_request_key_auth_exported], [
1774 #include <linux/key.h>
1775 #include <linux/keyctl.h>
1776 #include <keys/request_key_auth-type.h>
1779 const struct key *key = NULL;
1780 struct request_key_auth *rka = get_request_key_auth(key);
1782 ring = key_get(rka->dest_keyring);
1785 AC_DEFUN([LIBCFS_GET_REQUEST_KEY_AUTH], [
1786 LB2_MSG_LINUX_TEST_RESULT([if get_request_key_auth() is available],
1787 [get_request_key_auth_exported], [
1788 AC_DEFINE(HAVE_GET_REQUEST_KEY_AUTH, 1,
1789 [get_request_key_auth() is available])
1791 ]) # LIBCFS_GET_REQUEST_KEY_AUTH
1794 # LIBCFS_KOBJ_TYPE_DEFAULT_GROUPS
1796 # Linux commit v5.1-rc3-29-gaa30f47cf666
1797 # kobject: Add support for default attribute groups to kobj_type
1798 # Linux commit v5.18-rc1-2-gcdb4f26a63c3
1799 # kobject: kobj_type: remove default_attrs
1801 AC_DEFUN([LIBCFS_SRC_KOBJ_TYPE_DEFAULT_GROUPS],[
1802 LB2_LINUX_TEST_SRC([kobj_type_default_groups], [
1803 #include <linux/kobject.h>
1805 struct kobj_type *kobj_type = NULL;
1806 void *has = kobj_type->default_groups;
1810 AC_DEFUN([LIBCFS_KOBJ_TYPE_DEFAULT_GROUPS],[
1811 LB2_MSG_LINUX_TEST_RESULT([does struct kobj_type have 'default_groups' member],
1812 [kobj_type_default_groups], [
1813 AC_DEFINE(HAVE_KOBJ_TYPE_DEFAULT_GROUPS, 1,
1814 [struct kobj_type has 'default_groups' member])
1816 ]) # LIBCFS_KOBJ_TYPE_DEFAULT_GROUPS
1819 # LIBCFS_LOOKUP_USER_KEY
1821 # kernel 5.3 commit 3cf5d076fb4d48979f382bc9452765bf8b79e740
1822 # signal: Remove task parameter from force_sig
1824 AC_DEFUN([LIBCFS_SRC_LOOKUP_USER_KEY], [
1825 LB2_LINUX_TEST_SRC([lookup_user_key_exported], [
1826 #include <linux/key.h>
1827 #include <linux/keyctl.h>
1829 lookup_user_key(KEY_SPEC_USER_KEYRING, 0, 0);
1832 AC_DEFUN([LIBCFS_LOOKUP_USER_KEY], [
1833 LB2_MSG_LINUX_TEST_RESULT([if lookup_user_key() is available],
1834 [lookup_user_key_exported], [
1835 AC_DEFINE(HAVE_LOOKUP_USER_KEY, 1,
1836 [lookup_user_key() is available])
1838 ]) # LIBCFS_LOOKUP_USER_KEY
1841 # LIBCFS_CACHE_DETAIL_WRITERS
1843 # kernel v5.3-rc2-1-g64a38e840ce5
1844 # SUNRPC: Track writers of the 'channel' file to improve cache_listeners_exist
1846 AC_DEFUN([LIBCFS_SRC_CACHE_DETAIL_WRITERS], [
1847 LB2_LINUX_TEST_SRC([cache_detail_writers_atomic], [
1848 #include <linux/sunrpc/cache.h>
1850 static struct cache_detail rsi_cache;
1852 atomic_set(&rsi_cache.writers, 0);
1855 AC_DEFUN([LIBCFS_CACHE_DETAIL_WRITERS], [
1856 LB2_MSG_LINUX_TEST_RESULT([if struct cache_detail has writers],
1857 [cache_detail_writers_atomic], [
1858 AC_DEFINE(HAVE_CACHE_DETAIL_WRITERS, 1,
1859 [struct cache_detail has writers])
1861 ]) # LIBCFS_CACHE_DETAIL_WRITERS
1864 # LIBCFS_GENL_DUMPIT_INFO
1866 # kernel v5.4-rc1 commit bf813b0afeae2f012f0e527a526c1b78ca21ad82
1867 # expanded struct genl_dumpit_info to include struct genl_family.
1869 AC_DEFUN([LIBCFS_SRC_GENL_DUMPIT_INFO], [
1870 LB2_LINUX_TEST_SRC([genl_dumpit_info], [
1871 #include <net/genetlink.h>
1873 static struct genl_dumpit_info info;
1878 AC_DEFUN([LIBCFS_GENL_DUMPIT_INFO], [
1879 LB2_MSG_LINUX_TEST_RESULT([if struct genl_dumpit_info has family field],
1880 [genl_dumpit_info], [
1881 AC_DEFINE(HAVE_GENL_DUMPIT_INFO, 1,
1882 [struct genl_dumpit_info has family field])
1884 ]) # LIBCFS_GENL_DUMPIT_INFO
1887 # LIBCFS_KALLSYMS_LOOKUP
1889 # kernel v5.6-11591-g0bd476e6c671
1890 # kallsyms: unexport kallsyms_lookup_name() and kallsyms_on_each_symbol()
1891 AC_DEFUN([LIBCFS_KALLSYMS_LOOKUP], [
1892 LB_CHECK_EXPORT([kallsyms_lookup_name], [kernel/kallsyms.c],
1893 [AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1,
1894 [kallsyms_lookup_name is exported by kernel])])
1895 ]) # LIBCFS_KALLSYMS_LOOKUP
1898 # v5.5-8862-gd56c0d45f0e2
1899 # proc: decouple proc from VFS with "struct proc_ops"
1901 AC_DEFUN([LIBCFS_SRC_HAVE_PROC_OPS], [
1902 LB2_LINUX_TEST_SRC([proc_ops], [
1903 #include <linux/proc_fs.h>
1905 static struct proc_ops *my_proc;
1907 my_proc->proc_lseek = NULL;
1909 ]) # LIBCFS_SRC_HAVE_PROC_OPS
1910 AC_DEFUN([LIBCFS_HAVE_PROC_OPS], [
1911 LB2_MSG_LINUX_TEST_RESULT([if struct proc_ops exists],
1913 AC_DEFINE(HAVE_PROC_OPS, 1,
1914 [struct proc_ops exists])
1916 ]) # LIBCFS_HAVE_PROC_OPS
1919 # LIBCFS_IP6_SET_PREF
1921 # kernel v5.8-rc1~165^2~71^2~3 commit 18d5ad62327576cbb1e5b9938a59d63ac0c15832
1922 # ipv6: add ip6_sock_set_addr_preferences
1924 AC_DEFUN([LIBCFS_SRC_IP6_SET_PREF], [
1925 LB2_LINUX_TEST_SRC([ip6_set_pref_test], [
1926 #include <net/ipv6.h>
1928 ip6_sock_set_addr_preferences(NULL, 0);
1931 AC_DEFUN([LIBCFS_IP6_SET_PREF], [
1932 LB2_MSG_LINUX_TEST_RESULT([if ip6_sock_set_addr_preferences() exists],
1933 [ip6_set_pref_test], [
1934 AC_DEFINE(HAVE_IP6_SET_PREF, 1,
1935 [if ip6_sock_set_addr_preferences exists])
1937 ]) # LIBCFS_IP6_SET_PREF
1942 # kernel v5.8-rc1~165^2~71^2~3 commit 6ebf71bab9fb476fc8132be4c12b88201278f0ca
1943 # ipv4: add ip_sock_set_tos
1945 AC_DEFUN([LIBCFS_SRC_IP_SET_TOS], [
1946 LB2_LINUX_TEST_SRC([ip_set_tos_test], [
1949 ip_sock_set_tos(NULL, 0);
1952 AC_DEFUN([LIBCFS_IP_SET_TOS], [
1953 LB2_MSG_LINUX_TEST_RESULT([if ip_sock_set_tos() exists],
1954 [ip_set_tos_test], [
1955 AC_DEFINE(HAVE_IP_SET_TOS, 1,
1956 [if ip_sock_set_tos exists])
1958 ]) # LIBCFS_IP_SET_TOS
1961 # LIBCFS_VMALLOC_2ARGS
1963 # kernel v5.8-rc1~201^2~19
1964 # mm: remove the pgprot argument to __vmalloc
1965 AC_DEFUN([LIBCFS_SRC_VMALLOC_2ARGS], [
1966 LB2_LINUX_TEST_SRC([vmalloc_2args], [
1967 #include <linux/vmalloc.h>
1972 AC_DEFUN([LIBCFS_VMALLOC_2ARGS], [
1973 LB2_MSG_LINUX_TEST_RESULT([if __vmalloc has 2 args],
1975 AC_DEFINE(HAVE_VMALLOC_2ARGS, 1,
1976 [__vmalloc only takes 2 args.])
1978 ]) # LIBCFS_VMALLOC_2ARGS
1981 # LIBCFS_HAVE_NR_UNSTABLE_NFS
1983 # kernel v5.8-rc1~201^2~75
1984 # mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead
1986 AC_DEFUN([LIBCFS_SRC_HAVE_NR_UNSTABLE_NFS], [
1987 LB2_LINUX_TEST_SRC([nr_unstable_nfs_exists], [
1988 #include <linux/mm.h>
1992 i = NR_UNSTABLE_NFS;
1995 AC_DEFUN([LIBCFS_HAVE_NR_UNSTABLE_NFS], [
1996 LB2_MSG_LINUX_TEST_RESULT([if NR_UNSTABLE_NFS still in use],
1997 [nr_unstable_nfs_exists], [
1998 AC_DEFINE(HAVE_NR_UNSTABLE_NFS, 1,
1999 [NR_UNSTABLE_NFS is still in use.])
2001 ]) # LIBCFS_HAVE_NR_UNSTABLE_NFS
2004 # LIBCFS_HAVE_MMAP_LOCK
2006 # kernel v5.8-rc1~83^2~24
2007 # mmap locking API: rename mmap_sem to mmap_lock
2009 AC_DEFUN([LIBCFS_SRC_HAVE_MMAP_LOCK], [
2010 LB2_LINUX_TEST_SRC([mmap_write_lock], [
2011 #include <linux/mm.h>
2013 mmap_write_lock(NULL);
2016 AC_DEFUN([LIBCFS_HAVE_MMAP_LOCK], [
2017 LB2_MSG_LINUX_TEST_RESULT([if mmap_lock API is available],
2018 [mmap_write_lock], [
2019 AC_DEFINE(HAVE_MMAP_LOCK, 1,
2020 [mmap_lock API is available.])
2022 ]) # LIBCFS_HAVE_MMAP_LOCK
2025 # LIBCFS_KERNEL_SETSOCKOPT
2027 # kernel v5.8-rc1~165^2~59^2
2028 # net: remove kernel_setsockopt
2029 AC_DEFUN([LIBCFS_SRC_KERNEL_SETSOCKOPT], [
2030 LB2_LINUX_TEST_SRC([kernel_setsockopt_exists], [
2031 #include <linux/net.h>
2033 kernel_setsockopt(NULL, 0, 0, NULL, 0);
2036 AC_DEFUN([LIBCFS_KERNEL_SETSOCKOPT], [
2037 LB2_MSG_LINUX_TEST_RESULT([if kernel_setsockopt still in use],
2038 [kernel_setsockopt_exists], [
2039 AC_DEFINE(HAVE_KERNEL_SETSOCKOPT, 1,
2040 [kernel_setsockopt still in use])
2042 ]) # LIBCFS_KERNEL_SETSOCKOPT
2045 # LIBCFS_USER_UID_KEYRING
2047 # kernel 5.2 commit 0f44e4d976f9 removed uid_keyring
2048 # from the user_struct struct
2050 AC_DEFUN([LIBCFS_SRC_USER_UID_KEYRING], [
2051 LB2_LINUX_TEST_SRC([user_uid_keyring_exists], [
2052 #include <linux/sched/user.h>
2054 ((struct user_struct *)0)->uid_keyring = NULL;
2057 AC_DEFUN([LIBCFS_USER_UID_KEYRING], [
2058 AC_MSG_CHECKING([if uid_keyring exists])
2059 LB2_LINUX_TEST_RESULT([user_uid_keyring_exists], [
2060 AC_DEFINE(HAVE_USER_UID_KEYRING, 1,
2061 [uid_keyring exists])
2063 ]) # LIBCFS_USER_UID_KEYRING
2066 # LIBCFS_KEY_NEED_UNLINK
2068 # kernel 5.8 commit 8c0637e950d68933a67f7438f779d79b049b5e5c
2069 # keys: Make the KEY_NEED_* perms an enum rather than a mask
2071 AC_DEFUN([LIBCFS_SRC_KEY_NEED_UNLINK], [
2072 LB2_LINUX_TEST_SRC([key_need_unlink_exists], [
2073 #include <linux/key.h>
2074 #include <linux/keyctl.h>
2076 lookup_user_key(0, 0, KEY_NEED_UNLINK);
2079 AC_DEFUN([LIBCFS_KEY_NEED_UNLINK], [
2080 LB2_MSG_LINUX_TEST_RESULT([if KEY_NEED_UNLINK exists],
2081 [key_need_unlink_exists], [
2082 AC_DEFINE(HAVE_KEY_NEED_UNLINK, 1,
2083 [KEY_NEED_UNLINK exists])
2085 ]) # LIBCFS_KEY_NEED_UNLINK
2088 # LIBCFS_SEC_RELEASE_SECCTX
2090 # kernel linux-hwe-5.8 (5.8.0-22.23~20.04.1)
2091 # LSM: Use lsmcontext in security_release_secctx
2092 AC_DEFUN([LIBCFS_SRC_SEC_RELEASE_SECCTX], [
2093 LB2_LINUX_TEST_SRC([security_release_secctx_1arg], [
2094 #include <linux/security.h>
2096 security_release_secctx(NULL);
2099 AC_DEFUN([LIBCFS_SEC_RELEASE_SECCTX], [
2100 LB2_MSG_LINUX_TEST_RESULT([if security_release_secctx has 1 arg],
2101 [security_release_secctx_1arg], [
2102 AC_DEFINE(HAVE_SEC_RELEASE_SECCTX_1ARG, 1,
2103 [security_release_secctx has 1 arg.])
2105 ]) # LIBCFS_SEC_RELEASE_SECCTX
2108 # LIBCFS_HAVE_KFREE_SENSITIVE
2110 # kernel v5.10-rc1~3
2111 # mm: remove kzfree() compatibility definition
2113 AC_DEFUN([LIBCFS_SRC_HAVE_KFREE_SENSITIVE], [
2114 LB2_LINUX_TEST_SRC([kfree_sensitive_exists], [
2115 #include <linux/slab.h>
2117 kfree_sensitive(NULL);
2120 AC_DEFUN([LIBCFS_HAVE_KFREE_SENSITIVE], [
2121 LB2_MSG_LINUX_TEST_RESULT([if kfree_sensitive() is available],
2122 [kfree_sensitive_exists], [
2123 AC_DEFINE(HAVE_KFREE_SENSITIVE, 1,
2124 [kfree_sensitive() is available.])
2126 ]) # LIBCFS_HAVE_KFREE_SENSITIVE
2129 # LIBCFS_HAVE_CRYPTO_SHA2_HEADER
2131 # Kernel v5.10-rc1-114-ga24d22b225ce
2132 # crypto: sha - split sha.h into sha1.h and sha2.h
2134 AC_DEFUN([LIBCFS_SRC_HAVE_CRYPTO_SHA2_HEADER], [
2135 LB2_CHECK_LINUX_HEADER_SRC([crypto/sha2.h], [-Werror])
2137 AC_DEFUN([LIBCFS_HAVE_CRYPTO_SHA2_HEADER], [
2138 LB2_CHECK_LINUX_HEADER_RESULT([crypto/sha2.h], [
2139 AC_DEFINE(HAVE_CRYPTO_SHA2_HEADER, 1,
2140 [crypto/sha2.h is present])
2142 ]) # LIBCFS_HAVE_CRYPTO_SHA2_HEADER
2145 # LIBCFS_HAVE_LIST_CMP_FUNC_T
2147 # kernel 5.10.70 commit 4f0f586bf0c898233d8f316f471a21db2abd522d
2148 # treewide: Change list_sort to use const pointers
2149 AC_DEFUN([LIBCFS_SRC_HAVE_LIST_CMP_FUNC_T], [
2150 LB2_LINUX_TEST_SRC([list_cmp_func_t_exists], [
2151 #include <linux/list_sort.h>
2153 list_cmp_func_t cmp;
2157 AC_DEFUN([LIBCFS_HAVE_LIST_CMP_FUNC_T], [
2158 LB2_MSG_LINUX_TEST_RESULT([if list_cmp_func_t type is defined],
2159 [list_cmp_func_t_exists], [
2160 AC_DEFINE(HAVE_LIST_CMP_FUNC_T, 1,
2161 [list_cmp_func_t type is defined])
2163 ]) # LIBCFS_HAVE_LIST_CMP_FUNC_T
2166 # LIBCFS_NLA_STRLCPY
2168 # Kernel version 5.10-rc3 commit 872f690341948b502c93318f806d821c56772c42
2169 # replaced nla_strlcpy() with nla_strscpy().
2171 AC_DEFUN([LIBCFS_SRC_NLA_STRLCPY], [
2172 LB2_LINUX_TEST_SRC([nla_strlcpy], [
2173 #include <net/netlink.h>
2175 if (nla_strlcpy(NULL, NULL, 0) == 0)
2179 AC_DEFUN([LIBCFS_NLA_STRLCPY], [
2180 LB2_MSG_LINUX_TEST_RESULT([if 'nla_strlcpy()' still exists],
2182 AC_DEFINE(HAVE_NLA_STRLCPY, 1,
2183 ['nla_strlcpy' is available])
2185 ]) # LIBCFS_NLA_STRLCPY
2188 # LIBCFS_LINUX_FORTIFY_STRING_HEADER
2190 # Linux v5.11-11104-ga28a6e860c6c
2191 # string.h: move fortified functions definitions in a dedicated header.
2193 AC_DEFUN([LIBCFS_SRC_LINUX_FORTIFY_STRING_HEADER],[
2194 LB2_LINUX_TEST_SRC([linux_fortify_string_header], [
2195 #include <linux/fortify-string.h>
2199 AC_DEFUN([LIBCFS_LINUX_FORTIFY_STRING_HEADER],[
2200 LB2_MSG_LINUX_TEST_RESULT([Is linux/fortify-string.h header available],
2201 [linux_fortify_string_header], [
2202 AC_DEFINE(HAVE_LINUX_FORTIFY_STRING_HEADER, 1,
2203 [linux/fortify-string.h header available])
2205 ]) # LIBCFS_LINUX_FORTIFY_STRING_HEADER
2208 # LIBCFS_HAVE_CIPHER_HEADER
2210 # Kernel 5.12 commit 0eb76ba29d16df2951d37c54ca279c4e5630b071
2211 # crypto: remove cipher routines from public crypto API
2213 AC_DEFUN([LIBCFS_SRC_HAVE_CIPHER_HEADER], [
2214 LB2_CHECK_LINUX_HEADER_SRC([crypto/internal/cipher.h], [-Werror])
2216 AC_DEFUN([LIBCFS_HAVE_CIPHER_HEADER], [
2217 LB2_CHECK_LINUX_HEADER_RESULT([crypto/internal/cipher.h], [
2218 AC_DEFINE(HAVE_CIPHER_H, 1,
2219 [crypto/internal/cipher.h is present])
2221 ]) # LIBCFS_HAVE_CIPHER_HEADER
2224 # LIBCFS_HAVE_TASK_RUNNING
2226 # Kernel 5.13-rc6 commit b03fbd4ff24c5f075e58eb19261d5f8b3e40d
2227 # introduced task_is_running() macro.
2229 AC_DEFUN([LIBCFS_SRC_HAVE_TASK_IS_RUNNING], [
2230 LB2_LINUX_TEST_SRC([task_is_running], [
2231 #include <linux/sched.h>
2233 if (task_is_running(current))
2237 AC_DEFUN([LIBCFS_HAVE_TASK_IS_RUNNING], [
2238 LB2_MSG_LINUX_TEST_RESULT([if task_is_running() is defined],
2239 [task_is_running], [
2240 AC_DEFINE(HAVE_TASK_IS_RUNNING, 1,
2241 [task_is_running() is defined])
2243 ]) # LIBCFS_HAVE_TASK_IS_RUNNING
2246 # LIBCFS_LINUX_STDARG_HEADER
2248 # Kernel 5.14-rc5 commit c0891ac15f0428ffa81b2e818d416bdf3cb74ab6
2249 # isystem: ship and use stdarg.h
2251 AC_DEFUN([LIBCFS_SRC_LINUX_STDARG_HEADER], [
2252 LB2_CHECK_LINUX_HEADER_SRC([linux/stdarg.h], [-Werror])
2254 AC_DEFUN([LIBCFS_LINUX_STDARG_HEADER], [
2255 LB2_CHECK_LINUX_HEADER_RESULT([linux/stdarg.h], [
2256 AC_DEFINE(HAVE_LINUX_STDARG_HEADER, 1,
2257 [linux/stdarg.h is present])
2259 ]) # LIBCFS_LINUX_STDARG_HEADER
2262 # LIBCFS_HAVE_PANIC_NOTIFIER_HEADER
2264 # Kernel 5.14 commit f39650de687e35766572ac89dbcd16a5911e2f0a
2265 # kernel.h: split out panic and oops helpers
2267 AC_DEFUN([LIBCFS_SRC_HAVE_PANIC_NOTIFIER_HEADER], [
2268 LB2_CHECK_LINUX_HEADER_SRC([linux/panic_notifier.h], [-Werror])
2270 AC_DEFUN([LIBCFS_HAVE_PANIC_NOTIFIER_HEADER], [
2271 LB2_CHECK_LINUX_HEADER_RESULT([linux/panic_notifier.h], [
2272 AC_DEFINE(HAVE_PANIC_NOTIFIER_H, 1,
2273 [linux/panic_notifier.h is present])
2275 ]) # LIBCFS_HAVE_PANIC_NOTIFIER_HEADER
2278 # LIBCFS_PARAM_SET_UINT_MINMAX
2280 # Kernel 5.15-rc1 commit 2a14c9ae15a38148484a128b84bff7e9ffd90d68
2281 # moved param_set_uint_minmax to common code
2283 AC_DEFUN([LIBCFS_SRC_PARAM_SET_UINT_MINMAX],[
2284 LB2_LINUX_TEST_SRC([param_set_uint_minmax], [
2285 #include <linux/moduleparam.h>
2287 param_set_uint_minmax(NULL, NULL, 0, 0);
2290 AC_DEFUN([LIBCFS_PARAM_SET_UINT_MINMAX],[
2291 LB2_MSG_LINUX_TEST_RESULT([does function 'param_set_uint_minmax' exist],
2292 [param_set_uint_minmax], [
2293 AC_DEFINE(HAVE_PARAM_SET_UINT_MINMAX, 1,
2294 ['param_set_uint_minmax' is available])
2296 ]) # LIBCFS_PARAM_SET_UINT_MINMAX
2299 # LIBCFS_LINUX_BLK_INTEGRITY_HEADER
2301 # Kernel 5.15-rc6 commit fe45e630a1035aea94c29016f2598bbde149bbe3
2302 # block: move integrity handling out of <linux/blkdev.h>
2304 AC_DEFUN([LIBCFS_SRC_LINUX_BLK_INTEGRITY_HEADER], [
2305 LB2_CHECK_LINUX_HEADER_SRC([linux/blk-integrity.h], [-Werror])
2307 AC_DEFUN([LIBCFS_LINUX_BLK_INTEGRITY_HEADER], [
2308 LB2_CHECK_LINUX_HEADER_RESULT([linux/blk-integrity.h], [
2309 AC_DEFINE(HAVE_LINUX_BLK_INTEGRITY_HEADER, 1,
2310 [linux/blk-integrity.h is present])
2312 ]) # LIBCFS_LINUX_BLK_INTEGRITY_HEADER
2315 # LIBCFS_PDE_DATA_EXISTS
2317 # Linux commit v5.16-11573-g6dfbbae14a7b
2318 # introduce pde_data()
2319 # Linux commit v5.16-11574-g359745d78351
2322 AC_DEFUN([LIBCFS_SRC_PDE_DATA_EXISTS],[
2323 LB2_LINUX_TEST_SRC([pde_data], [
2324 #include <linux/proc_fs.h>
2326 struct inode *inode = NULL;
2327 void *data =pde_data(inode);
2331 AC_DEFUN([LIBCFS_PDE_DATA_EXISTS],[
2332 LB2_MSG_LINUX_TEST_RESULT([does function 'pde_data' exist],
2334 AC_DEFINE(HAVE_pde_data, 1, [function pde_data() available])
2336 AC_DEFINE(pde_data(inode), PDE_DATA(inode),
2337 [function pde_data() unavailable])
2339 ]) # LIBCFS_PDE_DATA_EXISTS
2342 # LIBCFS_BIO_ALLOC_WITH_BDEV
2344 # Linux commit v5.17-rc2-21-g07888c665b40
2345 # block: pass a block_device and opf to bio_alloc
2347 AC_DEFUN([LIBCFS_SRC_BIO_ALLOC_WITH_BDEV],[
2348 LB2_LINUX_TEST_SRC([bio_alloc_with_bdev], [
2349 #include <linux/bio.h>
2351 struct block_device *bdev = NULL;
2352 unsigned short nr_vecs = 1;
2353 gfp_t gfp = GFP_KERNEL;
2354 struct bio *bio = bio_alloc(bdev, nr_vecs, REQ_OP_WRITE, gfp);
2358 AC_DEFUN([LIBCFS_BIO_ALLOC_WITH_BDEV],[
2359 LB2_MSG_LINUX_TEST_RESULT([does bio_alloc() takes a struct block_device],
2360 [bio_alloc_with_bdev], [
2361 AC_DEFINE(HAVE_BIO_ALLOC_WITH_BDEV, 1,
2362 [bio_alloc() takes a struct block_device])
2364 ]) # LIBCFS_BIO_ALLOC_WITH_BDEV
2367 # LIBCFS_TIMER_DELETE_SYNC
2369 # Linux commit v6.1-rc1-7-g9a5a30568697
2370 # timers: Get rid of del_singleshot_timer_sync()
2371 # Linux commit v6.1-rc1-11-g9b13df3fb64e
2372 # timers: Rename del_timer_sync() to timer_delete_sync()
2374 AC_DEFUN([LIBCFS_SRC_TIMER_DELETE_SYNC],[
2375 LB2_LINUX_TEST_SRC([timer_delete_sync], [
2376 #include <linux/timer.h>
2378 struct timer_list *timer = NULL;
2379 (void)timer_delete_sync(timer);
2382 AC_DEFUN([LIBCFS_TIMER_DELETE_SYNC],[
2383 LB2_MSG_LINUX_TEST_RESULT([is timer_delete_sync() available],
2384 [timer_delete_sync], [
2385 AC_DEFINE(HAVE_TIMER_DELETE_SYNC, 1,
2386 [timer_delete_sync() is available])
2388 AC_DEFINE(timer_delete_sync(t), del_timer_sync(t),
2389 [timer_delete_sync() not is available])
2391 ]) # LIBCFS_TIMER_DELETE_SYNC
2394 # LIBCFS_TIMER_DELETE_SYNC
2396 # Linux commit v6.1-rc1-12-gbb663f0f3c39
2397 # timers: Rename del_timer() to timer_delete()
2399 AC_DEFUN([LIBCFS_SRC_TIMER_DELETE],[
2400 LB2_LINUX_TEST_SRC([timer_delete], [
2401 #include <linux/timer.h>
2403 struct timer_list *timer = NULL;
2404 (void)timer_delete(timer);
2407 AC_DEFUN([LIBCFS_TIMER_DELETE],[
2408 LB2_MSG_LINUX_TEST_RESULT([is timer_delete() available],
2410 AC_DEFINE(HAVE_TIMER_DELETE, 1,
2411 [timer_delete() is available])
2413 AC_DEFINE(timer_delete(t), del_timer(t),
2414 [timer_delete() not is available])
2416 ]) # LIBCFS_TIMER_DELETE
2419 dnl # Generate and compile all of the kernel API test cases to determine
2420 dnl # which interfaces are available. By invoking the kernel build system
2421 dnl # only once the compilation can be done in parallel significantly
2422 dnl # speeding up the process.
2424 AC_DEFUN([LIBCFS_PROG_LINUX_SRC], [
2426 LIBCFS_SRC_KTIME_GET_TS64
2428 LIBCFS_SRC_PREPARE_TO_WAIT_EVENT
2429 LIBCFS_SRC_KERNEL_PARAM_OPS
2430 LIBCFS_SRC_KTIME_ADD
2431 LIBCFS_SRC_KTIME_AFTER
2432 LIBCFS_SRC_KTIME_BEFORE
2433 LIBCFS_SRC_KTIME_COMPARE
2434 LIBCFS_SRC_SHRINKER_COUNT
2436 LIBCFS_SRC_MATCH_WILDCARD
2438 LIBCFS_SRC_HAVE_MAPPING_AS_EXITING_FLAG
2440 LIBCFS_SRC_IOV_ITER_HAS_TYPE
2442 LIBCFS_SRC_HAVE_GLOB
2444 LIBCFS_SRC_HLIST_ADD_AFTER
2445 LIBCFS_SRC_TIMESPEC64
2446 LIBCFS_SRC_KTIME_GET_NS
2447 LIBCFS_SRC_KTIME_GET_REAL_TS64
2448 LIBCFS_SRC_KTIME_GET_REAL_SECONDS
2449 LIBCFS_SRC_KTIME_GET_REAL_NS
2450 LIBCFS_SRC_KTIME_TO_TIMESPEC64
2451 LIBCFS_SRC_TIMESPEC64_SUB
2452 LIBCFS_SRC_TIMESPEC64_TO_KTIME
2454 LIBCFS_SRC_KTIME_GET_SECONDS
2455 LIBCFS_SRC_WAIT_WOKEN
2457 LIBCFS_SRC_KTIME_MS_DELTA
2459 LIBCFS_SRC_KERNEL_PARAM_LOCK
2461 LIBCFS_SRC_STRSCPY_EXISTS
2462 LIBCFS_SRC_HAVE_TOPOLOGY_SIBLING_CPUMASK
2464 LIBCFS_SRC_KSTRTOBOOL_FROM_USER
2465 LIBCFS_SRC_NETLINK_CALLBACK_START
2467 LIBCFS_SRC_CRYPTO_HASH_HELPERS
2468 LIBCFS_SRC_RHASHTABLE_REPLACE
2470 LIBCFS_SRC_BROKEN_HASH_64
2471 LIBCFS_SRC_STACKTRACE_OPS_ADDRESS_RETURN_INT
2472 LIBCFS_SRC_GET_USER_PAGES_6ARG
2473 LIBCFS_SRC_STRINGHASH
2475 LIBCFS_SRC_RHASHTABLE_INSERT_FAST
2476 LIBCFS_SRC_RHASHTABLE_WALK_INIT_3ARG
2478 LIBCFS_SRC_HAVE_NR_ZONE_WRITE_PENDING
2479 LIBCFS_SRC_RHASHTABLE_LOOKUP
2481 LIBCFS_SRC_STACKTRACE_OPS
2483 LIBCFS_SRC_GET_USER_PAGES_GUP_FLAGS
2484 LIBCFS_SRC_RHASHTABLE_WALK_ENTER
2486 LIBCFS_SRC_HOTPLUG_STATE_MACHINE
2488 LIBCFS_SRC_NL_EXT_ACK
2489 LIBCFS_SRC_RHASHTABLE_LOOKUP_GET_INSERT_FAST
2490 LIBCFS_SRC_SCHED_HEADERS
2491 LIBCFS_SRC_KREF_READ
2492 LIBCFS_SRC_RHT_BUCKET_VAR
2494 LIBCFS_SRC_CPUS_READ_LOCK
2495 LIBCFS_SRC_HAVE_PROCESSOR_HEADER
2496 LIBCFS_SRC_WAIT_QUEUE_TASK_LIST_RENAME
2497 LIBCFS_SRC_WAIT_BIT_QUEUE_ENTRY_EXISTS
2498 LIBCFS_SRC_REFCOUNT_T
2499 LIBCFS_SRC_MEMALLOC_NORECLAIM
2501 LIBCFS_SRC_NLA_STRDUP
2502 LIBCFS_SRC_WAIT_QUEUE_ENTRY
2504 LIBCFS_SRC_DEFINE_TIMER
2505 LIBCFS_SRC_NEW_KERNEL_WRITE
2506 LIBCFS_SRC_NEW_KERNEL_READ
2508 LIBCFS_SRC_BITMAP_TO_ARR32
2509 LIBCFS_SRC_TIMER_SETUP
2511 LIBCFS_SRC_HAVE_NS_TO_TIMESPEC64
2512 LIBCFS_SRC_WAIT_VAR_EVENT
2514 LIBCFS_SRC_BITMAP_ALLOC
2515 LIBCFS_SRC_CLEAR_AND_WAKE_UP_BIT
2517 LIBCFS_SRC_TCP_SOCK_SET_NODELAY
2518 LIBCFS_SRC_TCP_SOCK_SET_KEEPIDLE
2520 LIBCFS_SRC_XARRAY_SUPPORT
2521 LIBCFS_SRC_NL_DUMP_EXT_ACK
2523 LIBCFS_SRC_HAVE_IOV_ITER_TYPE
2525 LIBCFS_SRC_MM_TOTALRAM_PAGES_FUNC
2526 LIBCFS_SRC_GET_REQUEST_KEY_AUTH
2528 LIBCFS_SRC_KOBJ_TYPE_DEFAULT_GROUPS
2529 LIBCFS_SRC_USER_UID_KEYRING
2531 LIBCFS_SRC_LOOKUP_USER_KEY
2532 LIBCFS_SRC_CACHE_DETAIL_WRITERS
2534 LIBCFS_SRC_GENL_DUMPIT_INFO
2536 LIBCFS_SRC_HAVE_PROC_OPS
2538 LIBCFS_SRC_TCP_SOCK_SET_QUICKACK
2539 LIBCFS_SRC_TCP_SOCK_SET_KEEPINTVL
2540 LIBCFS_SRC_TCP_SOCK_SET_KEEPCNT
2542 LIBCFS_SRC_IP6_SET_PREF
2543 LIBCFS_SRC_IP_SET_TOS
2544 LIBCFS_SRC_VMALLOC_2ARGS
2545 LIBCFS_SRC_HAVE_NR_UNSTABLE_NFS
2546 LIBCFS_SRC_KERNEL_SETSOCKOPT
2547 LIBCFS_SRC_KEY_NEED_UNLINK
2548 LIBCFS_SRC_SEC_RELEASE_SECCTX
2550 LIBCFS_SRC_HAVE_KFREE_SENSITIVE
2551 LIBCFS_SRC_HAVE_CRYPTO_SHA2_HEADER
2552 LIBCFS_SRC_HAVE_LIST_CMP_FUNC_T
2553 LIBCFS_SRC_NLA_STRLCPY
2555 LIBCFS_SRC_LINUX_FORTIFY_STRING_HEADER
2556 LIBCFS_SRC_HAVE_CIPHER_HEADER
2558 LIBCFS_SRC_HAVE_TASK_IS_RUNNING
2560 LIBCFS_SRC_LINUX_STDARG_HEADER
2561 LIBCFS_SRC_HAVE_PANIC_NOTIFIER_HEADER
2563 LIBCFS_SRC_PARAM_SET_UINT_MINMAX
2565 LIBCFS_SRC_PDE_DATA_EXISTS
2566 LIBCFS_SRC_BIO_ALLOC_WITH_BDEV
2568 LIBCFS_SRC_TIMER_DELETE_SYNC
2569 LIBCFS_SRC_TIMER_DELETE
2573 dnl # Check results of kernel interface tests.
2575 AC_DEFUN([LIBCFS_PROG_LINUX_RESULTS], [
2577 LIBCFS_KTIME_GET_TS64
2579 LIBCFS_PREPARE_TO_WAIT_EVENT
2580 LIBCFS_KERNEL_PARAM_OPS
2584 LIBCFS_KTIME_COMPARE
2585 LIBCFS_SHRINKER_COUNT
2587 LIBCFS_MATCH_WILDCARD
2589 LIBCFS_HAVE_MAPPING_AS_EXITING_FLAG
2591 LIBCFS_IOV_ITER_HAS_TYPE
2595 LIBCFS_HLIST_ADD_AFTER
2598 LIBCFS_KTIME_GET_REAL_TS64
2599 LIBCFS_KTIME_GET_REAL_SECONDS
2600 LIBCFS_KTIME_GET_REAL_NS
2601 LIBCFS_KTIME_TO_TIMESPEC64
2602 LIBCFS_TIMESPEC64_SUB
2603 LIBCFS_TIMESPEC64_TO_KTIME
2605 LIBCFS_KTIME_GET_SECONDS
2608 LIBCFS_KTIME_MS_DELTA
2610 LIBCFS_KERNEL_PARAM_LOCK
2612 LIBCFS_STRSCPY_EXISTS
2613 LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
2615 LIBCFS_KSTRTOBOOL_FROM_USER
2616 LIBCFS_NETLINK_CALLBACK_START
2618 LIBCFS_CRYPTO_HASH_HELPERS
2619 LIBCFS_RHASHTABLE_REPLACE
2621 LIBCFS_BROKEN_HASH_64
2622 LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
2623 LIBCFS_GET_USER_PAGES_6ARG
2626 LIBCFS_RHASHTABLE_INSERT_FAST
2627 LIBCFS_RHASHTABLE_WALK_INIT_3ARG
2629 LIBCFS_HAVE_NR_ZONE_WRITE_PENDING
2630 LIBCFS_RHASHTABLE_LOOKUP
2632 LIBCFS_STACKTRACE_OPS
2634 LIBCFS_GET_USER_PAGES_GUP_FLAGS
2635 LIBCFS_RHASHTABLE_WALK_ENTER
2637 LIBCFS_HOTPLUG_STATE_MACHINE
2640 LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
2641 LIBCFS_SCHED_HEADERS
2643 LIBCFS_RHT_BUCKET_VAR
2645 LIBCFS_CPUS_READ_LOCK
2646 LIBCFS_HAVE_PROCESSOR_HEADER
2647 LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
2648 LIBCFS_WAIT_BIT_QUEUE_ENTRY_EXISTS
2650 LIBCFS_MEMALLOC_NORECLAIM
2653 LIBCFS_WAIT_QUEUE_ENTRY
2656 LIBCFS_NEW_KERNEL_WRITE
2657 LIBCFS_NEW_KERNEL_READ
2659 LIBCFS_BITMAP_TO_ARR32
2662 LIBCFS_HAVE_NS_TO_TIMESPEC64
2663 LIBCFS_WAIT_VAR_EVENT
2666 LIBCFS_CLEAR_AND_WAKE_UP_BIT
2668 LIBCFS_TCP_SOCK_SET_NODELAY
2669 LIBCFS_TCP_SOCK_SET_KEEPIDLE
2671 LIBCFS_XARRAY_SUPPORT
2672 LIBCFS_NL_DUMP_EXT_ACK
2674 LIBCFS_HAVE_IOV_ITER_TYPE
2676 LIBCFS_MM_TOTALRAM_PAGES_FUNC
2677 LIBCFS_GET_REQUEST_KEY_AUTH
2679 LIBCFS_KOBJ_TYPE_DEFAULT_GROUPS
2680 LIBCFS_USER_UID_KEYRING
2682 LIBCFS_LOOKUP_USER_KEY
2683 LIBCFS_CACHE_DETAIL_WRITERS
2685 LIBCFS_GENL_DUMPIT_INFO
2687 LIBCFS_HAVE_PROC_OPS
2689 LIBCFS_TCP_SOCK_SET_QUICKACK
2690 LIBCFS_TCP_SOCK_SET_KEEPINTVL
2691 LIBCFS_TCP_SOCK_SET_KEEPCNT
2695 LIBCFS_VMALLOC_2ARGS
2696 LIBCFS_HAVE_NR_UNSTABLE_NFS
2697 LIBCFS_KERNEL_SETSOCKOPT
2698 LIBCFS_KEY_NEED_UNLINK
2699 LIBCFS_SEC_RELEASE_SECCTX
2701 LIBCFS_HAVE_KFREE_SENSITIVE
2702 LIBCFS_HAVE_CRYPTO_SHA2_HEADER
2703 LIBCFS_HAVE_LIST_CMP_FUNC_T
2706 LIBCFS_LINUX_FORTIFY_STRING_HEADER
2707 LIBCFS_HAVE_CIPHER_HEADER
2709 LIBCFS_HAVE_TASK_IS_RUNNING
2711 LIBCFS_LINUX_STDARG_HEADER
2712 LIBCFS_HAVE_PANIC_NOTIFIER_HEADER
2714 LIBCFS_PARAM_SET_UINT_MINMAX
2716 LIBCFS_PDE_DATA_EXISTS
2717 LIBCFS_BIO_ALLOC_WITH_BDEV
2719 LIBCFS_TIMER_DELETE_SYNC
2726 # LibCFS linux kernel checks
2728 AC_DEFUN([LIBCFS_PROG_LINUX], [
2729 AC_MSG_NOTICE([LibCFS kernel checks
2730 ==============================================================================])
2731 LIBCFS_CONFIG_PANIC_DUMPLOG
2733 # 4.6 - Export Check
2734 LIBCFS_EXPORT_KSET_FIND_OBJ
2735 # 4.13 - Export Check
2736 LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
2737 # 5.0 - Export Check
2739 # 5.7 - Export Check
2740 LIBCFS_KALLSYMS_LOOKUP
2741 ]) # LIBCFS_PROG_LINUX
2744 # LIBCFS_PATH_DEFAULTS
2746 # default paths for installed files
2748 AC_DEFUN([LIBCFS_PATH_DEFAULTS], [
2749 ]) # LIBCFS_PATH_DEFAULTS
2754 # other configure checks
2756 AC_DEFUN([LIBCFS_CONFIGURE], [
2757 AC_MSG_NOTICE([LibCFS core checks
2758 ==============================================================================])
2760 # libcfs/libcfs/util/nidstrings.c
2761 AC_CHECK_HEADERS([netdb.h asm/types.h endian.h])
2763 # -------- Check for required packages --------------
2765 AC_MSG_NOTICE([LibCFS required packages checks
2766 ==============================================================================])
2768 AC_MSG_CHECKING([whether to enable readline support])
2769 AC_ARG_ENABLE(readline,
2770 AS_HELP_STRING([--disable-readline],
2771 [disable readline support]),
2772 [], [enable_readline="yes"])
2773 AC_MSG_RESULT([$enable_readline])
2776 AS_IF([test "x$enable_readline" = xyes], [
2777 AC_CHECK_LIB([readline], [readline], [
2778 LIBREADLINE="-lreadline"
2779 AC_DEFINE(HAVE_LIBREADLINE, 1,
2780 [readline library is available])
2783 AC_SUBST(ENABLE_READLINE, yes)
2785 AC_SUBST(ENABLE_READLINE, no)
2787 AC_SUBST(LIBREADLINE)
2789 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
2790 AC_ARG_ENABLE([libpthread],
2791 AS_HELP_STRING([--disable-libpthread],
2792 [disable libpthread]),
2793 [], [enable_libpthread="yes"])
2794 AC_MSG_RESULT([$enable_libpthread])
2797 AS_IF([test "x$enable_libpthread" = xyes], [
2798 AC_CHECK_LIB([pthread], [pthread_create], [
2799 PTHREAD_LIBS="-lpthread"
2800 AC_DEFINE([HAVE_LIBPTHREAD], 1,
2801 [use libpthread for libcfs library])
2804 AC_SUBST(ENABLE_LIBPTHREAD, yes)
2806 AC_SUBST(ENABLE_LIBPTHREAD, no)
2807 AC_MSG_WARN([Using libpthread for libcfs library is disabled explicitly])
2809 AC_SUBST(PTHREAD_LIBS)
2810 ]) # LIBCFS_CONFIGURE
2813 # LIBCFS_CONFIG_FILES
2815 # files that should be generated with AC_OUTPUT
2817 AC_DEFUN([LIBCFS_CONFIG_FILES], [
2821 libcfs/autoconf/Makefile
2822 libcfs/include/Makefile
2823 libcfs/include/libcfs/Makefile
2824 libcfs/include/uapi/Makefile
2825 libcfs/include/libcfs/linux/Makefile
2826 libcfs/include/libcfs/util/Makefile
2827 libcfs/include/libcfs/crypto/Makefile
2828 libcfs/include/uapi/linux/Makefile
2829 libcfs/libcfs/Makefile
2830 libcfs/libcfs/autoMakefile
2831 libcfs/libcfs/linux/Makefile
2832 libcfs/libcfs/util/Makefile
2833 libcfs/libcfs/crypto/Makefile
2835 ]) # LIBCFS_CONFIG_FILES