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 AC_MSG_CHECKING([does function 'ktime_get_ts64' exist])
82 LB2_LINUX_TEST_RESULT([ktime_get_ts64], [
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 AC_MSG_CHECKING([does function 'prepare_to_wait_event' exist])
100 LB2_LINUX_TEST_RESULT([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 AC_MSG_CHECKING([does 'struct kernel_param_ops' exist])
122 LB2_LINUX_TEST_RESULT([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 AC_MSG_CHECKING([does function 'ktime_add' exist])
145 LB2_LINUX_TEST_RESULT([ktime_add], [
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 AC_MSG_CHECKING([does function 'ktime_after' exist])
166 LB2_LINUX_TEST_RESULT([ktime_after], [
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 AC_MSG_CHECKING([does function 'ktime_before' exist])
188 LB2_LINUX_TEST_RESULT([ktime_before], [
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 AC_MSG_CHECKING([does function 'ktime_compare' exist])
209 LB2_LINUX_TEST_RESULT([ktime_compare], [
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 AC_MSG_CHECKING([shrinker has 'count_objects'])
230 LB2_LINUX_TEST_RESULT([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 AC_MSG_CHECKING([does function 'match_wildcard' exist])
251 LB2_LINUX_TEST_RESULT([match_wildcard], [
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 AC_MSG_CHECKING([if enum mapping_flags has AS_EXITING flag])
274 LB2_LINUX_TEST_RESULT([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 AC_MSG_CHECKING([if iov_iter has member type])
297 LB2_LINUX_TEST_RESULT([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 AC_MSG_CHECKING([does 'ns_to_timespec64()' exist])
320 LB2_LINUX_TEST_RESULT([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 AC_MSG_CHECKING([does 'glob_match()' exist])
341 LB2_LINUX_TEST_RESULT([glob_match], [
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 AC_MSG_CHECKING([does function 'hlist_add_after' exist])
360 LB2_LINUX_TEST_RESULT([hlist_add_after], [
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 AC_MSG_CHECKING([does 'struct timespec64' exist])
381 LB2_LINUX_TEST_RESULT([timespec64], [
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 AC_MSG_CHECKING([does function 'ktime_get_real_ts64' exist])
401 LB2_LINUX_TEST_RESULT([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 AC_MSG_CHECKING([does function 'ktime_get_real_ts64' exist])
422 LB2_LINUX_TEST_RESULT([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 AC_MSG_CHECKING([does function 'ktime_get_ns' exist])
443 LB2_LINUX_TEST_RESULT([ktime_get_ns], [],[
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 AC_MSG_CHECKING([does function 'ktime_get_real_ns' exist])
464 LB2_LINUX_TEST_RESULT([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 AC_MSG_CHECKING([does function 'ktime_to_timespec64' exist])
486 LB2_LINUX_TEST_RESULT([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 AC_MSG_CHECKING([does function 'timespec64_sub' exist])
506 LB2_LINUX_TEST_RESULT([timespec64_sub], [
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 AC_MSG_CHECKING([does function 'timespec64_to_ktime' exist])
527 LB2_LINUX_TEST_RESULT([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 AC_MSG_CHECKING([does function 'ktime_get_seconds' exist])
547 LB2_LINUX_TEST_RESULT([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 AC_MSG_CHECKING([does function 'wait_woken' exist])
566 LB2_LINUX_TEST_RESULT([wait_woken], [
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 AC_MSG_CHECKING([does function 'ktime_ms_delta' exist])
588 LB2_LINUX_TEST_RESULT([ktime_ms_delta], [
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 AC_MSG_CHECKING([does function 'kernel_param_[un]lock' exist])
610 LB2_LINUX_TEST_RESULT([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>
628 strscpy((char *)NULL, (const char *)NULL, 0);
631 AC_DEFUN([LIBCFS_STRSCPY_EXISTS], [
632 AC_MSG_CHECKING([if kernel strscpy is available])
633 LB2_LINUX_TEST_RESULT([strscpy_exists], [
634 AC_DEFINE(HAVE_STRSCPY, 1,
635 [kernel strscpy is available])
637 ]) # LIBCFS_STRSCPY_EXISTS
640 # Kernel version 4.2 changed topology_thread_cpumask
641 # to topology_sibling_cpumask
643 AC_DEFUN([LIBCFS_SRC_HAVE_TOPOLOGY_SIBLING_CPUMASK],[
644 LB2_LINUX_TEST_SRC([topology_sibling_cpumask], [
645 #include <linux/topology.h>
647 const struct cpumask *mask;
649 mask = topology_sibling_cpumask(0);
652 AC_DEFUN([LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK],[
653 AC_MSG_CHECKING([does function 'topology_sibling_cpumask' exist])
654 LB2_LINUX_TEST_RESULT([topology_sibling_cpumask], [
655 AC_DEFINE(HAVE_TOPOLOGY_SIBLING_CPUMASK, 1,
656 [topology_sibling_cpumask is available])
658 ]) # LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
661 # Kernel version 4.4 commit ef951599074ba4fad2d0efa0a977129b41e6d203
662 # introduced kstrtobool and kstrtobool_from_user.
664 AC_DEFUN([LIBCFS_SRC_KSTRTOBOOL_FROM_USER], [
665 LB2_LINUX_TEST_SRC([kstrtobool_from_user], [
666 #include <linux/kernel.h>
669 return kstrtobool_from_user(NULL, 0, &result);
672 AC_DEFUN([LIBCFS_KSTRTOBOOL_FROM_USER], [
673 AC_MSG_CHECKING([if Linux kernel has 'kstrtobool_from_user'])
674 LB2_LINUX_TEST_RESULT([kstrtobool_from_user], [
675 AC_DEFINE(HAVE_KSTRTOBOOL_FROM_USER, 1,
676 [kernel has kstrtobool_from_user])
678 ]) # LIBCFS_KSTRTOBOOL_FROM_USER
681 # LIBCFS_NETLINK_CALLBACK_START
683 # Kernel version 4.4-rc3 commit fc9e50f5a5a4e1fa9ba2756f745a13e693cf6a06
684 # added a start function callback for struct netlink_callback
686 AC_DEFUN([LIBCFS_SRC_NETLINK_CALLBACK_START], [
687 LB2_LINUX_TEST_SRC([cb_start], [
688 #include <net/genetlink.h>
695 AC_DEFUN([LIBCFS_NETLINK_CALLBACK_START], [
696 AC_MSG_CHECKING([if struct genl_ops has start callback])
697 LB2_LINUX_TEST_RESULT([cb_start], [
698 AC_DEFINE(HAVE_NETLINK_CALLBACK_START, 1,
699 [struct genl_ops has 'start' callback])
701 ]) # LIBCFS_NETLINK_CALLBACK_START
704 # Kernel version 4.5-rc1 commit d12481bc58fba89427565f8592e88446ec084a24
705 # added crypto hash helpers
707 AC_DEFUN([LIBCFS_SRC_CRYPTO_HASH_HELPERS], [
708 LB2_LINUX_TEST_SRC([crypto_hash_helpers], [
709 #include <crypto/hash.h>
711 crypto_ahash_alg_name(NULL);
712 crypto_ahash_driver_name(NULL);
715 AC_DEFUN([LIBCFS_CRYPTO_HASH_HELPERS], [
716 AC_MSG_CHECKING([does crypto hash helper functions exist])
717 LB2_LINUX_TEST_RESULT([crypto_hash_helpers], [
718 AC_DEFINE(HAVE_CRYPTO_HASH_HELPERS, 1,
719 [crypto hash helper functions are available])
721 ]) # LIBCFS_CRYPTO_HASH_HELPERS
724 # Kernel version 4.5-rc1 commit 3502cad73c4bbf8f6365d539e814159275252c59
725 # introduced rhashtable_replace_fast
727 AC_DEFUN([LIBCFS_SRC_RHASHTABLE_REPLACE], [
728 LB2_LINUX_TEST_SRC([rhashtable_replace_fast], [
729 #include <linux/rhashtable.h>
731 const struct rhashtable_params params = { 0 };
733 rhashtable_replace_fast(NULL, NULL, NULL, params);
736 AC_DEFUN([LIBCFS_RHASHTABLE_REPLACE], [
737 AC_MSG_CHECKING([if 'rhashtable_replace_fast' exists])
738 LB2_LINUX_TEST_RESULT([rhashtable_replace_fast], [
739 AC_DEFINE(HAVE_RHASHTABLE_REPLACE, 1,
740 [rhashtable_replace_fast() is available])
742 ]) # LIBCFS_RHASHTABLE_REPLACE
745 # Kernel version 4.5-rc3 commit 2fe829aca9d7bed5fd6b49c6a1452e5e486b6cc3dd
746 # made kset_find_obj() exportable to modules
748 AC_DEFUN([LIBCFS_EXPORT_KSET_FIND_OBJ], [
749 LB_CHECK_EXPORT([kset_find_obj], [lib/kobject.c],
750 [AC_DEFINE(HAVE_KSET_FIND_OBJ, 1,
751 [kset_find_obj is exported by the kernel])])
752 ]) # LIBCFS_EXPORT_KSET_FIND_OBJ
755 # Kernel version 4.6+ commit ef703f49a6c5b909a85149bb6625c4ed0d697186
756 # fixed the brokenness of hash_64(). The fix removed GOLDEN_RATIO_PRIME_64
757 # since it was a poor prime value.
759 AC_DEFUN([LIBCFS_SRC_BROKEN_HASH_64], [
760 LB2_LINUX_TEST_SRC([broken_hash_64], [
761 #include <linux/hash.h>
763 int tmp = GOLDEN_RATIO_PRIME_64;
766 AC_DEFUN([LIBCFS_BROKEN_HASH_64], [
767 AC_MSG_CHECKING([kernel has fixed hash_64()])
768 LB2_LINUX_TEST_RESULT([broken_hash_64], [
769 AC_DEFINE(HAVE_BROKEN_HASH_64, 1, [kernel hash_64() is broken])
771 ]) # LIBCFS_BROKEN_HASH_64
774 # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
776 # linux 4.6 kernel changed stacktrace_ops address to return an int
778 AC_DEFUN([LIBCFS_SRC_STACKTRACE_OPS_ADDRESS_RETURN_INT], [
779 LB2_LINUX_TEST_SRC([stacktrace_ops_address_return_int], [
780 #include <asm/stacktrace.h>
784 rc = ((struct stacktrace_ops *)0)->address(NULL, 0, 0);
787 AC_DEFUN([LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT], [
788 AC_MSG_CHECKING([if 'struct stacktrace_ops' address function returns an int])
789 LB2_LINUX_TEST_RESULT([stacktrace_ops_address_return_int], [
790 AC_DEFINE(STACKTRACE_OPS_ADDRESS_RETURN_INT, 1,
791 ['struct stacktrace_ops' address function returns an int])
793 ]) # LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
796 # Kernel version 4.6 removed both struct task_struct and struct mm_struct
797 # arguments to get_user_pages
799 AC_DEFUN([LIBCFS_SRC_GET_USER_PAGES_6ARG], [
800 LB2_LINUX_TEST_SRC([get_user_pages_6arg], [
801 #include <linux/mm.h>
805 rc = get_user_pages(0, 0, 0, 0, NULL, NULL);
808 AC_DEFUN([LIBCFS_GET_USER_PAGES_6ARG], [
809 AC_MSG_CHECKING([if 'get_user_pages()' takes 6 arguments])
810 LB2_LINUX_TEST_RESULT([get_user_pages_6arg], [
811 AC_DEFINE(HAVE_GET_USER_PAGES_6ARG, 1,
812 [get_user_pages takes 6 arguments])
814 ]) # LIBCFS_GET_USER_PAGES_6ARG
819 # 4.6 kernel created stringhash.h which moved stuff out of dcache.h
820 # commit f4bcbe792b8f434e32487cff9d9e30ab45a3ce02
822 AC_DEFUN([LIBCFS_SRC_STRINGHASH], [
823 LB2_CHECK_LINUX_HEADER_SRC([linux/stringhash.h], [-Werror])
825 AC_DEFUN([LIBCFS_STRINGHASH], [
826 LB2_CHECK_LINUX_HEADER_RESULT([linux/stringhash.h], [
827 AC_DEFINE(HAVE_STRINGHASH, 1,
828 [stringhash.h is present])
830 ]) # LIBCFS_STRINGHASH
833 # LIBCFS_RHASHTABLE_INSERT_FAST
835 # 4.7+ kernel commit 5ca8cc5bf11faed257c762018aea9106d529232f
836 # changed __rhashtable_insert_fast to support the new function
837 # rhashtable_lookup_get_insert_key().
839 AC_DEFUN([LIBCFS_SRC_RHASHTABLE_INSERT_FAST], [
840 LB2_LINUX_TEST_SRC([rhashtable_insert_fast], [
841 #include <linux/rhashtable.h>
843 const struct rhashtable_params params = { 0 };
846 rc = __rhashtable_insert_fast(NULL, NULL, NULL, params);
850 AC_DEFUN([LIBCFS_RHASHTABLE_INSERT_FAST], [
851 AC_MSG_CHECKING([if internal '__rhashtable_insert_fast()' returns int])
852 LB2_LINUX_TEST_RESULT([rhashtable_insert_fast], [
853 AC_DEFINE(HAVE_HASHTABLE_INSERT_FAST_RETURN_INT, 1,
854 ['__rhashtable_insert_fast()' returns int])
856 ]) # LIBCFS_RHASHTABLE_INSERT_FAST
859 # LIBCFS_HAVE_NR_ZONE_WRITE_PENDING
861 # kernel v4.7-5966-g5a1c84b404a7
862 # mm: remove reclaim and compaction retry approximations
864 AC_DEFUN([LIBCFS_SRC_HAVE_NR_ZONE_WRITE_PENDING], [
865 LB2_LINUX_TEST_SRC([nr_zone_write_pending_exists], [
866 #include <linux/mmzone.h>
868 enum zone_stat_item item = NR_ZONE_WRITE_PENDING;
872 AC_DEFUN([LIBCFS_HAVE_NR_ZONE_WRITE_PENDING], [
873 AC_MSG_CHECKING([if NR_ZONE_WRITE_PENDING is available])
874 LB2_LINUX_TEST_RESULT([nr_zone_write_pending_exists], [
875 AC_DEFINE(HAVE_NR_ZONE_WRITE_PENDING, 1,
876 [NR_ZONE_WRITE_PENDING is still in use.])
878 ]) # LIBCFS_HAVE_NR_ZONE_WRITE_PENDING
881 # Kernel version 4.7-rc1 commit 8f6fd83c6c5ec66a4a70c728535ddcdfef4f3697
882 # added 3rd arg to rhashtable_walk_init
884 AC_DEFUN([LIBCFS_SRC_RHASHTABLE_WALK_INIT_3ARG], [
885 LB2_LINUX_TEST_SRC([rhashtable_walk_init], [
886 #include <linux/gfp.h>
887 #include <linux/rhashtable.h>
889 rhashtable_walk_init(NULL, NULL, GFP_KERNEL);
892 AC_DEFUN([LIBCFS_RHASHTABLE_WALK_INIT_3ARG], [
893 AC_MSG_CHECKING([if 'rhashtable_walk_init' has 3 args])
894 LB2_LINUX_TEST_RESULT([rhashtable_walk_init], [
895 AC_DEFINE(HAVE_3ARG_RHASHTABLE_WALK_INIT, 1,
896 [rhashtable_walk_init() has 3 args])
898 ]) # LIBCFS_RHASHTABLE_WALK_INIT_3ARG
901 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
902 # introduced rhashtable_lookup
904 AC_DEFUN([LIBCFS_SRC_RHASHTABLE_LOOKUP], [
905 LB2_LINUX_TEST_SRC([rhashtable_lookup], [
906 #include <linux/rhashtable.h>
908 const struct rhashtable_params params = { 0 };
911 ret = rhashtable_lookup(NULL, NULL, params);
914 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP], [
915 AC_MSG_CHECKING([if 'rhashtable_lookup' exist])
916 LB2_LINUX_TEST_RESULT([rhashtable_lookup], [
917 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP, 1,
918 [rhashtable_lookup() is available])
920 ]) # LIBCFS_RHASHTABLE_LOOKUP
924 # Kernel version 4.8-rc6 commit ca26893f05e86497a86732768ec53cd38c0819ca
925 # created the rhlist interface to allow inserting duplicate objects
926 # into the same table.
928 AC_DEFUN([LIBCFS_SRC_RHLTABLE], [
929 LB2_LINUX_TEST_SRC([rhtable], [
930 #include <linux/rhashtable.h>
932 struct rhltable *hlt = NULL;
934 rhltable_destroy(hlt);
937 AC_DEFUN([LIBCFS_RHLTABLE], [
938 AC_MSG_CHECKING([does 'struct rhltable' exist])
939 LB2_LINUX_TEST_RESULT([rhtable], [
940 AC_DEFINE(HAVE_RHLTABLE, 1, [struct rhltable exist])
945 # LIBCFS_STACKTRACE_OPS
947 # Kernel version 4.8 commit c8fe4609827aedc9c4b45de80e7cdc8ccfa8541b
948 # removed both struct stacktrace_ops and dump_trace() function
950 AC_DEFUN([LIBCFS_SRC_STACKTRACE_OPS], [
951 LB2_LINUX_TEST_SRC([stacktrace_ops], [
954 #include <asm/stacktrace.h>
956 struct stacktrace_ops ops;
960 AC_DEFUN([LIBCFS_STACKTRACE_OPS], [
961 AC_MSG_CHECKING([if 'struct stacktrace_ops' exists])
962 LB2_LINUX_TEST_RESULT([stacktrace_ops], [
963 AC_DEFINE(HAVE_STACKTRACE_OPS, 1,
964 [struct stacktrace_ops exists])
966 ]) # LIBCFS_STACKTRACE_OPS
969 # LIBCFS_RHASHTABLE_WALK_ENTER
971 # Kernel version 4.9-rc1 commit 246779dd090bd1b74d2652b3a6ca7759f593b27a
972 # introduced rhashtable_walk_enter
974 AC_DEFUN([LIBCFS_SRC_RHASHTABLE_WALK_ENTER], [
975 LB2_LINUX_TEST_SRC([rhashtable_walk_enter], [
976 #include <linux/rhashtable.h>
978 rhashtable_walk_enter(NULL, NULL);
981 AC_DEFUN([LIBCFS_RHASHTABLE_WALK_ENTER], [
982 AC_MSG_CHECKING([if 'rhashtable_walk_enter' exists])
983 LB2_LINUX_TEST_RESULT([rhashtable_walk_enter], [
984 AC_DEFINE(HAVE_RHASHTABLE_WALK_ENTER, 1,
985 [rhashtable_walk_enter() is available])
987 ]) # LIBCFS_RHASHTABLE_WALK_ENTER
990 # Kernel version 4.9 commit 768ae309a96103ed02eb1e111e838c87854d8b51
991 # mm: replace get_user_pages() write/force parameters with gup_flags
993 AC_DEFUN([LIBCFS_SRC_GET_USER_PAGES_GUP_FLAGS], [
994 LB2_LINUX_TEST_SRC([get_user_pages_gup_flags], [
995 #include <linux/mm.h>
998 rc = get_user_pages(0, 0, FOLL_WRITE, NULL, NULL);
1001 AC_DEFUN([LIBCFS_GET_USER_PAGES_GUP_FLAGS], [
1002 AC_MSG_CHECKING([if 'get_user_pages()' takes gup_flags in arguments])
1003 LB2_LINUX_TEST_RESULT([get_user_pages_gup_flags], [
1004 AC_DEFINE(HAVE_GET_USER_PAGES_GUP_FLAGS, 1,
1005 [get_user_pages takes gup_flags in arguments])
1007 ]) # LIBCFS_GET_USER_PAGES_GUP_FLAGS
1010 # Kernel version 4.10 commit 7b737965b33188bd3dbb44e938535c4006d97fbb
1011 # libcfs: Convert to hotplug state machine
1013 AC_DEFUN([LIBCFS_SRC_HOTPLUG_STATE_MACHINE], [
1014 LB2_LINUX_TEST_SRC([cpu_hotplug_state_machine], [
1015 #include <linux/cpuhotplug.h>
1017 cpuhp_remove_state(CPUHP_LUSTRE_CFS_DEAD);
1020 AC_DEFUN([LIBCFS_HOTPLUG_STATE_MACHINE], [
1021 AC_MSG_CHECKING([if libcfs supports CPU hotplug state machine])
1022 LB2_LINUX_TEST_RESULT([cpu_hotplug_state_machine], [
1023 AC_DEFINE(HAVE_HOTPLUG_STATE_MACHINE, 1,
1024 [hotplug state machine is supported])
1026 ]) # LIBCFS_HOTPLUG_STATE_MACHINE
1031 # Kernel version 4.10-rc3 commit f405df5de3170c00e5c54f8b7cf4766044a032ba
1032 # introduced refcount_t which is atomic_t plus over flow guards.
1034 AC_DEFUN([LIBCFS_SRC_REFCOUNT_T], [
1035 LB2_CHECK_LINUX_HEADER_SRC([linux/refcount.h], [-Werror])
1037 AC_DEFUN([LIBCFS_REFCOUNT_T], [
1038 LB2_CHECK_LINUX_HEADER_RESULT([linux/refcount.h], [
1039 AC_DEFINE(HAVE_REFCOUNT_T, 1,
1040 [refcount_t is supported])
1042 ]) # LIBCFS_REFCOUNT_T
1045 # Kernel version 4.12 commit 499118e966f1d2150bd66647c8932343c4e9a0b8
1046 # introduce memalloc_noreclaim_{save,restore}
1048 AC_DEFUN([LIBCFS_SRC_MEMALLOC_NORECLAIM], [
1049 LB2_LINUX_TEST_SRC([memalloc_noreclaim], [
1050 #include <linux/sched/mm.h>
1052 int flag = memalloc_noreclaim_save();
1053 memalloc_noreclaim_restore(flag);
1056 AC_DEFUN([LIBCFS_MEMALLOC_NORECLAIM], [
1057 AC_MSG_CHECKING([if memalloc_noreclaim_{save,restore} exist])
1058 LB2_LINUX_TEST_RESULT([memalloc_noreclaim], [
1059 AC_DEFINE(HAVE_MEMALLOC_RECLAIM, 1,
1060 [memalloc_noreclaim_{save,restore}() is supported])
1062 ]) # LIBCFS_MEMALLOC_NORECLAIM
1065 # LIBCFS_SCHED_HEADERS
1067 # 4.11 has broken up sched.h into more headers.
1069 AC_DEFUN([LIBCFS_SRC_SCHED_HEADERS], [
1070 LB2_CHECK_LINUX_HEADER_SRC([linux/sched/signal.h], [-Werror])
1072 AC_DEFUN([LIBCFS_SCHED_HEADERS], [
1073 LB2_CHECK_LINUX_HEADER_RESULT([linux/sched/signal.h], [
1074 AC_DEFINE(HAVE_SCHED_HEADERS, 1,
1075 [linux/sched header directory exist])
1077 ]) # LIBCFS_SCHED_HEADERS
1080 # Kernel version 4.11-rc1 commit 2c935bc57221cc2edc787c72ea0e2d30cdcd3d5e
1081 # introduce kref_read
1083 AC_DEFUN([LIBCFS_SRC_KREF_READ], [
1084 LB2_LINUX_TEST_SRC([kref_read], [
1085 #include <linux/kref.h>
1090 AC_DEFUN([LIBCFS_KREF_READ], [
1091 AC_MSG_CHECKING([if 'kref_read' exists])
1092 LB2_LINUX_TEST_RESULT([kref_read], [
1093 AC_DEFINE(HAVE_KREF_READ, 1, [kref_read() is available])
1095 ]) # LIBCFS_KREF_READ
1098 # Kernel version 4.11-rc1 commit da20420f83ea0fbcf3d03afda08d971ea1d8a356
1099 # introduced rht_bucket_var
1101 AC_DEFUN([LIBCFS_SRC_RHT_BUCKET_VAR], [
1102 LB2_LINUX_TEST_SRC([rht_bucket_var], [
1103 #include <linux/rhashtable.h>
1105 rht_bucket_var(NULL, 0);
1108 AC_DEFUN([LIBCFS_RHT_BUCKET_VAR], [
1109 AC_MSG_CHECKING([if 'rht_bucket_var' exists])
1110 LB2_LINUX_TEST_RESULT([rht_bucket_var], [
1111 AC_DEFINE(HAVE_RHT_BUCKET_VAR, 1,
1112 [rht_bucket_var() is available])
1114 ]) # LIBCFS_RHT_BUCKET_VAR
1117 # Kernel version 4.11-rc5 commit fceb6435e85298f747fee938415057af837f5a8a
1118 # began the enhanchement of Netlink with extended ACK struct for advanced
1119 # error handling. By commit 7ab606d1609dd6dfeae9c8ad0a8a4e051d831e46 we
1120 # had full support for this new feature.
1122 AC_DEFUN([LIBCFS_SRC_NL_EXT_ACK], [
1123 LB2_LINUX_TEST_SRC([netlink_ext_ack], [
1124 #include <net/genetlink.h>
1126 struct genl_info info;
1131 AC_DEFUN([LIBCFS_NL_EXT_ACK], [
1132 AC_MSG_CHECKING([if Netlink supports netlink_ext_ack])
1133 LB2_LINUX_TEST_RESULT([netlink_ext_ack], [
1134 AC_DEFINE(HAVE_NL_PARSE_WITH_EXT_ACK, 1,
1135 [netlink_ext_ack is an argument to nla_parse type function])
1137 ]) # LIBCFS_NL_EXT_ACK
1140 # Kernel version 4.11 commit f9fe1c12d126f9887441fa5bb165046f30ddd4b5
1141 # introduced rhashtable_lookup_get_insert_fast
1143 AC_DEFUN([LIBCFS_SRC_RHASHTABLE_LOOKUP_GET_INSERT_FAST], [
1144 LB2_LINUX_TEST_SRC([rhashtable_lookup_get_insert_fast], [
1145 #include <linux/rhashtable.h>
1147 const struct rhashtable_params params = { 0 };
1150 ret = rhashtable_lookup_get_insert_fast(NULL, NULL, params);
1153 AC_DEFUN([LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST], [
1154 AC_MSG_CHECKING([if 'rhashtable_lookup_get_insert_fast' exist])
1155 LB2_LINUX_TEST_RESULT([rhashtable_lookup_get_insert_fast], [
1156 AC_DEFINE(HAVE_RHASHTABLE_LOOKUP_GET_INSERT_FAST, 1,
1157 [rhashtable_lookup_get_insert_fast() is available])
1159 ]) # LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
1162 # Kernel version 4.12-rc2 8f553c498e1772cccb39a114da4a498d22992758
1163 # provide proper CPU hotplug locking
1165 AC_DEFUN([LIBCFS_SRC_CPUS_READ_LOCK], [
1166 LB2_LINUX_TEST_SRC([cpu_read_lock], [
1167 #include <linux/cpu.h>
1173 AC_DEFUN([LIBCFS_CPUS_READ_LOCK], [
1174 AC_MSG_CHECKING([if 'cpus_read_[un]lock' exist])
1175 LB2_LINUX_TEST_RESULT([cpu_read_lock], [
1176 AC_DEFINE(HAVE_CPUS_READ_LOCK, 1, ['cpus_read_lock' exist])
1178 ]) # LIBCFS_CPUS_READ_LOCK
1181 # LIBCFS_HAVE_PROCESSOR_HEADER
1183 # Kernel version 4.12-rc3 commit fd851a3cdc196bfc1d229b5f22369069af532bf8
1184 # introduce processor.h
1186 AC_DEFUN([LIBCFS_SRC_HAVE_PROCESSOR_HEADER], [
1187 LB2_CHECK_LINUX_HEADER_SRC([linux/processor.h], [-Werror])
1189 AC_DEFUN([LIBCFS_HAVE_PROCESSOR_HEADER], [
1190 LB2_CHECK_LINUX_HEADER_RESULT([linux/processor.h], [
1191 AC_DEFINE(HAVE_PROCESSOR_H, 1,
1192 [processor.h is present])
1194 ]) # LIBCFS_HAVE_PROCESSOR_HEADER
1197 # LIBCFS_HAVE_WAIT_BIT_HEADER
1199 # Kernel verison 4.12-rc6 commit 5dd43ce2f69d42a71dcacdb13d17d8c0ac1fe8f7
1200 # created wait_bit.h
1202 AC_DEFUN([LIBCFS_SRC_HAVE_WAIT_BIT_HEADER], [
1203 LB2_CHECK_LINUX_HEADER_SRC([linux/wait_bit.h], [-Werror])
1205 AC_DEFUN([LIBCFS_HAVE_WAIT_BIT_HEADER], [
1206 LB2_CHECK_LINUX_HEADER_RESULT([linux/wait_bit.h], [
1207 AC_DEFINE(HAVE_WAIT_BIT_HEADER_H, 1,
1208 [wait_bit.h is present])
1210 ]) # LIBCFS_HAVE_PROCESSOR_HEADER
1213 # Kernel version 4.12-rc6 commmit 2055da97389a605c8a00d163d40903afbe413921
1215 # struct wait_queue_head::task_list => ::head
1216 # struct wait_queue_entry::task_list => ::entry
1218 AC_DEFUN([LIBCFS_SRC_WAIT_QUEUE_TASK_LIST_RENAME], [
1219 LB2_LINUX_TEST_SRC([wait_queue_task_list], [
1220 #include <linux/wait.h>
1222 wait_queue_head_t e;
1224 INIT_LIST_HEAD(&e.head);
1227 AC_DEFUN([LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME], [
1228 AC_MSG_CHECKING([if linux wait_queue_head list_head is named head])
1229 LB2_LINUX_TEST_RESULT([wait_queue_task_list], [
1230 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY_LIST, 1,
1231 [linux wait_queue_head_t list_head is name head])
1233 ]) # LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
1236 # LIBCFS_WAIT_BIT_QUEUE_ENTRY_EXISTS
1238 # Kernel version v4.12-rc6-23-g76c85ddc4695
1239 # sched/wait: Standardize wait_bit_queue naming
1241 # renamed struct wait_bit_queue => wait_bit_queue_entry
1243 AC_DEFUN([LIBCFS_SRC_WAIT_BIT_QUEUE_ENTRY_EXISTS], [
1244 LB2_LINUX_TEST_SRC([struct_wait_bit_queue_entry_exists], [
1245 #include <linux/wait.h>
1246 #if HAVE_WAIT_BIT_HEADER_H
1247 #include <linux/wait_bit.h>
1250 struct wait_bit_queue_entry entry;
1251 memset(&entry, 0, sizeof(entry));
1254 AC_DEFUN([LIBCFS_WAIT_BIT_QUEUE_ENTRY_EXISTS], [
1255 AC_MSG_CHECKING([if struct wait_bit_queue_entry exists])
1256 LB2_LINUX_TEST_RESULT([struct_wait_bit_queue_entry_exists], [
1257 AC_DEFINE(HAVE_WAIT_BIT_QUEUE_ENTRY, 1,
1258 [if struct wait_bit_queue_entry exists])
1260 ]) # LIBCFS_WAIT_BIT_QUEUE_ENTRY_EXISTS
1265 # Kernel version 4.13-rc1 commit 2cf0c8b3e6942ecafe6ebb1a6d0328a81641bf39
1266 # created nla_strdup(). This is needed since push strings can be
1269 AC_DEFUN([LIBCFS_SRC_NLA_STRDUP], [
1270 LB2_LINUX_TEST_SRC([nla_strdup], [
1271 #include <net/netlink.h>
1273 char *tmp = nla_strdup(NULL, GFP_KERNEL);
1277 AC_DEFUN([LIBCFS_NLA_STRDUP], [
1278 AC_MSG_CHECKING([if 'nla_strdup()' exists])
1279 LB2_LINUX_TEST_RESULT([nla_strdup], [
1280 AC_DEFINE(HAVE_NLA_STRDUP, 1,
1281 ['nla_strdup' is available])
1283 ]) # LIBCFS_NLA_STRDUP
1286 # LIBCFS_WAIT_QUEUE_ENTRY
1288 # Kernel version 4.13 ac6424b981bce1c4bc55675c6ce11bfe1bbfa64f
1289 # Rename wait_queue_t => wait_queue_entry_t
1291 AC_DEFUN([LIBCFS_SRC_WAIT_QUEUE_ENTRY], [
1292 LB2_LINUX_TEST_SRC([wait_queue_entry], [
1293 #include <linux/wait.h>
1295 wait_queue_entry_t e;
1300 AC_DEFUN([LIBCFS_WAIT_QUEUE_ENTRY], [
1301 AC_MSG_CHECKING([if 'wait_queue_entry_t' exists])
1302 LB2_LINUX_TEST_RESULT([wait_queue_entry], [
1303 AC_DEFINE(HAVE_WAIT_QUEUE_ENTRY, 1,
1304 ['wait_queue_entry_t' is available])
1306 ]) # LIBCFS_WAIT_QUEUE_ENTRY
1309 # LIBCFS_NEW_KERNEL_WRITE
1311 # Kernel version 4.14 e13ec939e96b13e664bb6cee361cc976a0ee621a
1312 # changed kernel_write prototype to make is plug compatible
1313 # with the unexported vfs_write()
1315 AC_DEFUN([LIBCFS_SRC_NEW_KERNEL_WRITE], [
1316 LB2_LINUX_TEST_SRC([kernel_write_match], [
1317 #include <linux/fs.h>
1319 const void *buf = NULL;
1321 return kernel_write(NULL, buf, 0, &pos);
1324 AC_DEFUN([LIBCFS_NEW_KERNEL_WRITE], [
1325 AC_MSG_CHECKING([if 'kernel_write' matches other read/write helpers])
1326 LB2_LINUX_TEST_RESULT([kernel_write_match], [
1327 AC_DEFINE(HAVE_NEW_KERNEL_WRITE, 1,
1328 ['kernel_write' aligns with read/write helpers])
1330 ]) # LIBCFS_NEW_KERNEL_WRITE
1333 # LIBCFS_MM_TOTALRAM_PAGES_FUNC
1335 # kernel 5.0 commit ca79b0c211af63fa3276f0e3fd7dd9ada2439839
1336 # mm: convert totalram_pages and totalhigh_pages variables to atomic
1338 AC_DEFUN([LIBCFS_SRC_MM_TOTALRAM_PAGES_FUNC], [
1339 LB2_LINUX_TEST_SRC([totalram_pages], [
1340 #include <linux/mm.h>
1342 totalram_pages_inc();
1345 AC_DEFUN([LIBCFS_MM_TOTALRAM_PAGES_FUNC], [
1346 AC_MSG_CHECKING([if totalram_pages is a function])
1347 LB2_LINUX_TEST_RESULT([totalram_pages], [
1348 AC_DEFINE(HAVE_TOTALRAM_PAGES_AS_FUNC, 1,
1349 [if totalram_pages is a function])
1351 ]) # LIBCFS_MM_TOTALRAM_PAGES_FUNC
1354 # LIBCFS_NEW_KERNEL_READ
1356 # 4.14 commit bdd1d2d3d251c65b74ac4493e08db18971c09240 changed
1357 # the signature of kernel_read to match other read/write helpers
1358 # and place offset last.
1360 AC_DEFUN([LIBCFS_SRC_NEW_KERNEL_READ], [
1361 LB2_LINUX_TEST_SRC([kernel_read], [
1362 #include <linux/fs.h>
1365 kernel_read(NULL, NULL, 0, &pos);
1368 AC_DEFUN([LIBCFS_NEW_KERNEL_READ], [
1369 AC_MSG_CHECKING([if 'kernel_read()' has loff_t *pos as last parameter])
1370 LB2_LINUX_TEST_RESULT([kernel_read], [
1371 AC_DEFINE(HAVE_KERNEL_READ_LAST_POSP, 1,
1372 [kernel_read() signature ends with loff_t *pos])
1374 ]) # LIBCFS_NEW_KERNEL_READ
1377 # LIBCFS_DEFINE_TIMER
1379 # Kernel version 4.14 commit 1d27e3e2252ba9d949ca82fbdb73cde102cb2067
1380 # remove expires and data arguments from DEFINE_TIMER. Also the callback
1381 # when from using unsigned long argument to using struct timer_list pointer.
1383 AC_DEFUN([LIBCFS_SRC_DEFINE_TIMER], [
1384 LB2_LINUX_TEST_SRC([define_timer], [
1385 #include <linux/timer.h>
1387 static DEFINE_TIMER(my_timer, NULL);
1390 AC_DEFUN([LIBCFS_DEFINE_TIMER], [
1391 AC_MSG_CHECKING([if DEFINE_TIMER takes only 2 arguments])
1392 LB2_LINUX_TEST_RESULT([define_timer], [
1393 AC_DEFINE(HAVE_NEW_DEFINE_TIMER, 1,
1394 [DEFINE_TIMER uses only 2 arguements])
1396 ]) # LIBCFS_DEFINE_TIMER
1399 # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1401 # Kernel 2.6.27 commit 8594698ebddeef5443b7da8258ae33b3eaca61d5
1402 # exported save_stack_trace_tsk for x86.
1403 # Kernel 2.6.27 commit 01f4b8b8b8db09b88be7df7e51192e4e678b69d3
1404 # exported save_stack_trace_tsk for powerpc
1405 # Kernel 4.13 commit e27c7fa015d61c8be6a2c32b2144aad2ae6ec975
1406 # exported save_stack_trace_tsk for arm64
1407 # Kernel 4.14 commit 9a3dc3186fc3795e076a4122da9e0258651a9631
1408 # exported save_stack_trace_tsk for arm
1410 AC_DEFUN([LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK], [
1411 LB_CHECK_EXPORT([save_stack_trace_tsk], [arch/$SUBARCH/kernel/stacktrace.c],
1412 [AC_DEFINE(HAVE_SAVE_STACK_TRACE_TSK, 1,
1413 [save_stack_trace_tsk is exported])])
1414 ]) # LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
1417 # LIBCFS_LOCKDEP_IS_HELD
1419 # Kernel v4.15-rc8-106-g08f36ff64234
1420 # lockdep: Make lockdep checking constant
1422 AC_DEFUN([LIBCFS_SRC_LOCKDEP_IS_HELD], [
1423 LB2_LINUX_TEST_SRC([lockdep_is_held], [
1424 #include <linux/lockdep.h>
1426 #ifdef CONFIG_LOCKDEP
1427 const struct spinlock *lock = NULL;
1429 lockdep_is_held(lock);
1433 AC_DEFUN([LIBCFS_LOCKDEP_IS_HELD], [
1434 AC_MSG_CHECKING([if 'lockdep_is_held()' uses const argument])
1435 LB2_LINUX_TEST_RESULT([lockdep_is_held], [],[
1436 AC_DEFINE(NEED_LOCKDEP_IS_HELD_DISCARD_CONST, 1,
1437 [lockdep_is_held() argument is const])
1439 ]) # LIBCFS_LOCKDEP_IS_HELD
1442 # LIBCFS_BITMAP_TO_ARR32
1444 # Kernel commit v4.15-10794-gc724f19 introduced
1445 # bitmap_{from,to}_arr32, which are handy functions, to move
1446 # data back and forth between a bitmap and a u32 array
1448 AC_DEFUN([LIBCFS_SRC_BITMAP_TO_ARR32], [
1449 LB2_LINUX_TEST_SRC([bitmap_to_arr32], [
1450 #include <linux/bitmap.h>
1452 bitmap_to_arr32(NULL, NULL, 0);
1455 AC_DEFUN([LIBCFS_BITMAP_TO_ARR32], [
1456 AC_MSG_CHECKING([if 'bitmap_to_arr32()' exist])
1457 LB2_LINUX_TEST_RESULT([bitmap_to_arr32], [
1458 AC_DEFINE(HAVE_BITMAP_TO_ARR32, 1,
1459 [bitmap_to_arr32() exist])
1461 ]) # LIBCFS_BITMAP_TO_ARR32
1464 # LIBCFS_TIMER_SETUP
1466 # Kernel version 4.15 commit e99e88a9d2b067465adaa9c111ada99a041bef9a
1467 # setup_timer() was replaced by timer_setup(), where the callback
1468 # argument is the structure already holding the struct timer_list.
1470 AC_DEFUN([LIBCFS_SRC_TIMER_SETUP], [
1471 LB2_LINUX_TEST_SRC([timer_setup], [
1472 #include <linux/timer.h>
1474 timer_setup(NULL, NULL, 0);
1477 AC_DEFUN([LIBCFS_TIMER_SETUP], [
1478 AC_MSG_CHECKING([if setup_timer has been replaced with timer_setup])
1479 LB2_LINUX_TEST_RESULT([timer_setup], [
1480 AC_DEFINE(HAVE_TIMER_SETUP, 1,
1481 [timer_setup has replaced setup_timer])
1483 ]) # LIBCFS_TIMER_SETUP
1486 # LIBCFS_WAIT_VAR_EVENT
1488 # Kernel version 4.16-rc4 commit 6b2bb7265f0b62605e8caee3613449ed0db270b9
1489 # added wait_var_event()
1491 AC_DEFUN([LIBCFS_SRC_WAIT_VAR_EVENT], [
1492 if test "x$lb_cv_header_linux_wait_bit_h" = xyes; then
1493 WAIT_BIT_H="-DHAVE_WAIT_BIT_HEADER_H=1"
1497 LB2_LINUX_TEST_SRC([wait_var_event], [
1498 #ifdef HAVE_WAIT_BIT_HEADER_H
1499 #include <linux/wait_bit.h>
1501 #include <linux/wait.h>
1506 AC_DEFUN([LIBCFS_WAIT_VAR_EVENT], [
1507 AC_MSG_CHECKING([if 'wait_var_event' exist])
1508 LB2_LINUX_TEST_RESULT([wait_var_event], [
1509 AC_DEFINE(HAVE_WAIT_VAR_EVENT, 1,
1510 ['wait_var_event' is available])
1512 ]) # LIBCFS_WAIT_VAR_EVENT
1515 # LIBCFS_BITMAP_ALLOC
1517 # Kernel version 4.17 commit c42b65e363ce97a828f81b59033c3558f8fa7f70
1518 # added bitmap memory allocation handling.
1520 AC_DEFUN([LIBCFS_SRC_BITMAP_ALLOC], [
1521 LB2_LINUX_TEST_SRC([bitmap_alloc], [
1522 #include <linux/bitmap.h>
1524 unsigned long *map = bitmap_alloc(1, GFP_KERNEL);
1528 AC_DEFUN([LIBCFS_BITMAP_ALLOC], [
1529 AC_MSG_CHECKING([if Linux bitmap memory management exist])
1530 LB2_LINUX_TEST_RESULT([bitmap_alloc], [
1531 AC_DEFINE(HAVE_BITMAP_ALLOC, 1,
1532 [Linux bitmap can be allocated])
1534 ]) # LIBCFS_BITMAP_ALLOC
1537 # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1539 # Kernel version 4.17-rc2 commit 8236b0ae31c837d2b3a2565c5f8d77f637e824cc
1540 # added clear_and_wake_up_bit()
1542 AC_DEFUN([LIBCFS_SRC_CLEAR_AND_WAKE_UP_BIT], [
1543 if test "x$lb_cv_header_linux_wait_bit_h" = xyes; then
1544 WAIT_BIT_H="-DHAVE_WAIT_BIT_HEADER_H=1"
1548 LB2_LINUX_TEST_SRC([clear_and_wake_up_bit], [
1549 #ifdef HAVE_WAIT_BIT_HEADER_H
1550 #include <linux/wait_bit.h>
1552 #include <linux/wait.h>
1554 clear_and_wake_up_bit(0, NULL);
1557 AC_DEFUN([LIBCFS_CLEAR_AND_WAKE_UP_BIT], [
1558 AC_MSG_CHECKING([if 'clear_and_wake_up_bit' exist])
1559 LB2_LINUX_TEST_RESULT([clear_and_wake_up_bit], [
1560 AC_DEFINE(HAVE_CLEAR_AND_WAKE_UP_BIT, 1,
1561 ['clear_and_wake_up_bit' is available])
1563 ]) # LIBCFS_CLEAR_AND_WAKE_UP_BIT
1566 # LIBCFS_TCP_SOCK_SET_NODELAY
1568 # kernel 4.18.0-293.el8
1569 # tcp_sock_set_nodelay() was added
1570 AC_DEFUN([LIBCFS_SRC_TCP_SOCK_SET_NODELAY], [
1571 LB2_LINUX_TEST_SRC([tcp_sock_set_nodelay_exists], [
1572 #include <linux/tcp.h>
1574 tcp_sock_set_nodelay(NULL);
1577 AC_DEFUN([LIBCFS_TCP_SOCK_SET_NODELAY], [
1578 AC_MSG_CHECKING([if 'tcp_sock_set_nodelay()' exists])
1579 LB2_LINUX_TEST_RESULT([tcp_sock_set_nodelay_exists], [
1580 AC_DEFINE(HAVE_TCP_SOCK_SET_NODELAY, 1,
1581 ['tcp_sock_set_nodelay()' exists])
1583 ]) # LIBCFS_TCP_SOCK_SET_NODELAY
1586 # LIBCFS_TCP_SOCK_SET_KEEPIDLE
1588 # kernel 4.18.0-293.el8
1589 # tcp_sock_set_keepidle() was added
1591 AC_DEFUN([LIBCFS_SRC_TCP_SOCK_SET_KEEPIDLE], [
1592 LB2_LINUX_TEST_SRC([tcp_sock_set_keepidle_exists], [
1593 #include <linux/tcp.h>
1595 tcp_sock_set_keepidle(NULL, 0);
1598 AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPIDLE], [
1599 AC_MSG_CHECKING([if 'tcp_sock_set_keepidle()' exists])
1600 LB2_LINUX_TEST_RESULT([tcp_sock_set_keepidle_exists], [
1601 AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPIDLE, 1,
1602 ['tcp_sock_set_keepidle()' exists])
1604 ]) # LIBCFS_TCP_SOCK_SET_KEEPIDLE
1607 # LIBCFS_TCP_SOCK_SET_QUICKACK
1608 # kernel v5.7-rc6-2504-gddd061b8daed
1609 # tcp: add tcp_sock_set_quickack
1611 AC_DEFUN([LIBCFS_SRC_TCP_SOCK_SET_QUICKACK], [
1612 LB2_LINUX_TEST_SRC([tcp_sock_set_quickack_exists], [
1613 #include <linux/tcp.h>
1615 tcp_sock_set_quickack(NULL, 0);
1618 AC_DEFUN([LIBCFS_TCP_SOCK_SET_QUICKACK], [
1619 AC_MSG_CHECKING([if 'tcp_sock_set_quickack()' exists])
1620 LB2_LINUX_TEST_RESULT([tcp_sock_set_quickack_exists], [
1621 AC_DEFINE(HAVE_TCP_SOCK_SET_QUICKACK, 1,
1622 ['tcp_sock_set_quickack()' exists])
1624 ]) # LIBCFS_TCP_SOCK_SET_QUICKACK
1627 # LIBCFS_TCP_SOCK_SET_KEEPINTVL
1628 # v5.7-rc6-2508-gd41ecaac903c
1629 # tcp: add tcp_sock_set_keepintvl
1631 AC_DEFUN([LIBCFS_SRC_TCP_SOCK_SET_KEEPINTVL], [
1632 LB2_LINUX_TEST_SRC([tcp_sock_set_keepintvl_exists], [
1633 #include <linux/tcp.h>
1635 tcp_sock_set_keepintvl(NULL, 0);
1638 AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPINTVL], [
1639 AC_MSG_CHECKING([if 'tcp_sock_set_keepintvl()' exists])
1640 LB2_LINUX_TEST_RESULT([tcp_sock_set_keepintvl_exists], [
1641 AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPINTVL, 1,
1642 ['tcp_sock_set_keepintvl()' exists])
1644 ]) # LIBCFS_TCP_SOCK_SET_KEEPINTVL
1647 # LIBCFS_TCP_SOCK_SET_KEEPCNT
1648 # v5.7-rc6-2509-g480aeb9639d6
1649 # tcp: add tcp_sock_set_keepcnt
1651 AC_DEFUN([LIBCFS_SRC_TCP_SOCK_SET_KEEPCNT], [
1652 LB2_LINUX_TEST_SRC([tcp_sock_set_keepcnt_exists], [
1653 #include <linux/tcp.h>
1655 tcp_sock_set_keepcnt(NULL, 0);
1658 AC_DEFUN([LIBCFS_TCP_SOCK_SET_KEEPCNT], [
1659 AC_MSG_CHECKING([if 'tcp_sock_set_keepcnt()' exists])
1660 LB2_LINUX_TEST_RESULT([tcp_sock_set_keepcnt_exists], [
1661 AC_DEFINE(HAVE_TCP_SOCK_SET_KEEPCNT, 1,
1662 ['tcp_sock_set_keepcnt()' exists])
1664 ]) # LIBCFS_TCP_SOCK_SET_KEEPCNT
1667 # LIBCFS_XARRAY_SUPPORT
1669 # 4.19-rc5 kernel commit 3159f943aafdbacb2f94c38fdaadabf2bbde2a14
1670 # replaced the radix tree implementation with Xarrays. This change
1671 # introduced functionaly needed for general Xarray support
1673 AC_DEFUN([LIBCFS_SRC_XARRAY_SUPPORT], [
1674 LB2_LINUX_TEST_SRC([xarray_support], [
1675 #include <linux/xarray.h>
1680 AC_DEFUN([LIBCFS_XARRAY_SUPPORT], [
1681 AC_MSG_CHECKING([if page cache uses Xarray])
1682 LB2_LINUX_TEST_RESULT([xarray_support], [
1683 AC_DEFINE(HAVE_XARRAY_SUPPORT, 1,
1684 [kernel Xarray implementation lacks 'xa_is_value'])
1686 ]) # LIBCFS_XARRAY_SUPPORT
1689 # LIBCFS_NL_DUMP_EXT_ACK
1691 # Kernel version 4.19-rc6 commit 4a19edb60d0203cd5bf95a8b46ea8f63fd41194c
1692 # added extended ACK handling to Netlink dump handlers
1694 AC_DEFUN([LIBCFS_SRC_NL_DUMP_EXT_ACK], [
1695 LB2_LINUX_TEST_SRC([netlink_dump_ext_ack], [
1696 #include <net/netlink.h>
1698 struct netlink_callback *cb = NULL;
1702 AC_DEFUN([LIBCFS_NL_DUMP_EXT_ACK], [
1703 AC_MSG_CHECKING([if Netlink dump handlers support ext_ack])
1704 LB2_LINUX_TEST_RESULT([netlink_dump_ext_ack], [
1705 AC_DEFINE(HAVE_NL_DUMP_WITH_EXT_ACK, 1,
1706 [netlink_ext_ack is handled for Netlink dump handlers])
1708 ]) # LIBCFS_NL_DUMP_EXT_ACK
1711 # LIBCFS_HAVE_IOV_ITER_TYPE
1713 # kernel 4.20 commit 00e23707442a75b404392cef1405ab4fd498de6b
1714 # iov_iter: Use accessor functions to access an iterator's type and direction.
1716 AC_DEFUN([LIBCFS_SRC_HAVE_IOV_ITER_TYPE], [
1717 LB2_LINUX_TEST_SRC([macro_iov_iter_type_exists], [
1718 #include <linux/uio.h>
1720 struct iov_iter iter = { };
1721 enum iter_type type = iov_iter_type(&iter);
1725 AC_DEFUN([LIBCFS_HAVE_IOV_ITER_TYPE], [
1726 AC_MSG_CHECKING([if iov_iter_type exists])
1727 LB2_LINUX_TEST_RESULT([macro_iov_iter_type_exists], [
1728 AC_DEFINE(HAVE_IOV_ITER_TYPE, 1,
1729 [if iov_iter_type exists])
1731 ]) # LIBCFS_HAVE_IOV_ITER_TYPE
1736 # Kernel 5.0 commit ba20ba2e3743bac786dff777954c11930256075e
1737 # implemented generic radix trees to handle very large memory
1738 # allocation that can be used instead of vmalloc which has
1739 # a performance penalty.
1741 AC_DEFUN([LIBCFS_GENRADIX], [
1742 LB_CHECK_EXPORT([__genradix_ptr], [lib/generic-radix-tree.c],
1743 [AC_DEFINE(HAVE_GENRADIX_SUPPORT, 1,
1744 [generic-radix-tree is present])])
1745 ]) # LIBCFS_GENRADIX
1748 # LIBCFS_GET_REQUEST_KEY_AUTH
1750 # kernel 5.0 commit 822ad64d7e46a8e2c8b8a796738d7b657cbb146d
1751 # keys: Fix dependency loop between construction record and auth key
1753 # Added <keys/request_key_auth-type.h> and get_request_key_auth()
1754 # which was propagated to stable
1756 AC_DEFUN([LIBCFS_SRC_GET_REQUEST_KEY_AUTH], [
1757 LB2_LINUX_TEST_SRC([get_request_key_auth_exported], [
1758 #include <linux/key.h>
1759 #include <linux/keyctl.h>
1760 #include <keys/request_key_auth-type.h>
1763 const struct key *key = NULL;
1764 struct request_key_auth *rka = get_request_key_auth(key);
1766 ring = key_get(rka->dest_keyring);
1769 AC_DEFUN([LIBCFS_GET_REQUEST_KEY_AUTH], [
1770 AC_MSG_CHECKING([if get_request_key_auth() is available])
1771 LB2_LINUX_TEST_RESULT([get_request_key_auth_exported], [
1772 AC_DEFINE(HAVE_GET_REQUEST_KEY_AUTH, 1,
1773 [get_request_key_auth() is available])
1775 ]) # LIBCFS_GET_REQUEST_KEY_AUTH
1778 # LIBCFS_KOBJ_TYPE_DEFAULT_GROUPS
1780 # Linux commit v5.1-rc3-29-gaa30f47cf666
1781 # kobject: Add support for default attribute groups to kobj_type
1782 # Linux commit v5.18-rc1-2-gcdb4f26a63c3
1783 # kobject: kobj_type: remove default_attrs
1785 AC_DEFUN([LIBCFS_SRC_KOBJ_TYPE_DEFAULT_GROUPS],[
1786 LB2_LINUX_TEST_SRC([kobj_type_default_groups], [
1787 #include <linux/kobject.h>
1789 struct kobj_type *kobj_type = NULL;
1790 void *has = kobj_type->default_groups;
1794 AC_DEFUN([LIBCFS_KOBJ_TYPE_DEFAULT_GROUPS],[
1795 AC_MSG_CHECKING([does struct kobj_type have 'default_groups' member])
1796 LB2_LINUX_TEST_RESULT([kobj_type_default_groups], [
1797 AC_DEFINE(HAVE_KOBJ_TYPE_DEFAULT_GROUPS, 1,
1798 [struct kobj_type has 'default_groups' member])
1800 ]) # LIBCFS_KOBJ_TYPE_DEFAULT_GROUPS
1803 # LIBCFS_LOOKUP_USER_KEY
1805 # kernel 5.3 commit 3cf5d076fb4d48979f382bc9452765bf8b79e740
1806 # signal: Remove task parameter from force_sig
1808 AC_DEFUN([LIBCFS_SRC_LOOKUP_USER_KEY], [
1809 LB2_LINUX_TEST_SRC([lookup_user_key_exported], [
1810 #include <linux/key.h>
1811 #include <linux/keyctl.h>
1813 lookup_user_key(KEY_SPEC_USER_KEYRING, 0, 0);
1816 AC_DEFUN([LIBCFS_LOOKUP_USER_KEY], [
1817 AC_MSG_CHECKING([if lookup_user_key() is available])
1818 LB2_LINUX_TEST_RESULT([lookup_user_key_exported], [
1819 AC_DEFINE(HAVE_LOOKUP_USER_KEY, 1,
1820 [lookup_user_key() is available])
1822 ]) # LIBCFS_LOOKUP_USER_KEY
1825 # LIBCFS_CACHE_DETAIL_WRITERS
1827 # kernel v5.3-rc2-1-g64a38e840ce5
1828 # SUNRPC: Track writers of the 'channel' file to improve cache_listeners_exist
1830 AC_DEFUN([LIBCFS_SRC_CACHE_DETAIL_WRITERS], [
1831 LB2_LINUX_TEST_SRC([cache_detail_writers_atomic], [
1832 #include <linux/sunrpc/cache.h>
1834 static struct cache_detail rsi_cache;
1836 atomic_set(&rsi_cache.writers, 0);
1839 AC_DEFUN([LIBCFS_CACHE_DETAIL_WRITERS], [
1840 AC_MSG_CHECKING([if struct cache_detail has writers])
1841 LB2_LINUX_TEST_RESULT([cache_detail_writers_atomic], [
1842 AC_DEFINE(HAVE_CACHE_DETAIL_WRITERS, 1,
1843 [struct cache_detail has writers])
1845 ]) # LIBCFS_CACHE_DETAIL_WRITERS
1848 # LIBCFS_GENL_DUMPIT_INFO
1850 # kernel v5.4-rc1 commit bf813b0afeae2f012f0e527a526c1b78ca21ad82
1851 # expanded struct genl_dumpit_info to include struct genl_family.
1853 AC_DEFUN([LIBCFS_SRC_GENL_DUMPIT_INFO], [
1854 LB2_LINUX_TEST_SRC([genl_dumpit_info], [
1855 #include <net/genetlink.h>
1857 static struct genl_dumpit_info info;
1862 AC_DEFUN([LIBCFS_GENL_DUMPIT_INFO], [
1863 AC_MSG_CHECKING([if struct genl_dumpit_info has family field])
1864 LB2_LINUX_TEST_RESULT([genl_dumpit_info], [
1865 AC_DEFINE(HAVE_GENL_DUMPIT_INFO, 1,
1866 [struct genl_dumpit_info has family field])
1868 ]) # LIBCFS_GENL_DUMPIT_INFO
1871 # LIBCFS_KALLSYMS_LOOKUP
1873 # kernel v5.6-11591-g0bd476e6c671
1874 # kallsyms: unexport kallsyms_lookup_name() and kallsyms_on_each_symbol()
1875 AC_DEFUN([LIBCFS_KALLSYMS_LOOKUP], [
1876 LB_CHECK_EXPORT([kallsyms_lookup_name], [kernel/kallsyms.c],
1877 [AC_DEFINE(HAVE_KALLSYMS_LOOKUP_NAME, 1,
1878 [kallsyms_lookup_name is exported by kernel])])
1879 ]) # LIBCFS_KALLSYMS_LOOKUP
1882 # v5.5-8862-gd56c0d45f0e2
1883 # proc: decouple proc from VFS with "struct proc_ops"
1885 AC_DEFUN([LIBCFS_SRC_HAVE_PROC_OPS], [
1886 LB2_LINUX_TEST_SRC([proc_ops], [
1887 #include <linux/proc_fs.h>
1889 static struct proc_ops *my_proc;
1891 my_proc->proc_lseek = NULL;
1893 ]) # LIBCFS_SRC_HAVE_PROC_OPS
1894 AC_DEFUN([LIBCFS_HAVE_PROC_OPS], [
1895 AC_MSG_CHECKING([if struct proc_ops exists])
1896 LB2_LINUX_TEST_RESULT([proc_ops], [
1897 AC_DEFINE(HAVE_PROC_OPS, 1,
1898 [struct proc_ops exists])
1900 ]) # LIBCFS_HAVE_PROC_OPS
1903 # LIBCFS_IP6_SET_PREF
1905 # kernel v5.8-rc1~165^2~71^2~3 commit 18d5ad62327576cbb1e5b9938a59d63ac0c15832
1906 # ipv6: add ip6_sock_set_addr_preferences
1908 AC_DEFUN([LIBCFS_SRC_IP6_SET_PREF], [
1909 LB2_LINUX_TEST_SRC([ip6_set_pref_test], [
1910 #include <net/ipv6.h>
1912 ip6_sock_set_addr_preferences(NULL, 0);
1915 AC_DEFUN([LIBCFS_IP6_SET_PREF], [
1916 AC_MSG_CHECKING([if ip6_sock_set_addr_preferences() exists])
1917 LB2_LINUX_TEST_RESULT([ip6_set_pref_test], [
1918 AC_DEFINE(HAVE_IP6_SET_PREF, 1,
1919 [if ip6_sock_set_addr_preferences exists])
1921 ]) # LIBCFS_IP6_SET_PREF
1924 # LIBCFS_VMALLOC_2ARGS
1926 # kernel v5.8-rc1~201^2~19
1927 # mm: remove the pgprot argument to __vmalloc
1928 AC_DEFUN([LIBCFS_SRC_VMALLOC_2ARGS], [
1929 LB2_LINUX_TEST_SRC([vmalloc_2args], [
1930 #include <linux/vmalloc.h>
1935 AC_DEFUN([LIBCFS_VMALLOC_2ARGS], [
1936 AC_MSG_CHECKING([if __vmalloc has 2 args])
1937 LB2_LINUX_TEST_RESULT([vmalloc_2args], [
1938 AC_DEFINE(HAVE_VMALLOC_2ARGS, 1,
1939 [__vmalloc only takes 2 args.])
1941 ]) # LIBCFS_VMALLOC_2ARGS
1944 # LIBCFS_HAVE_NR_UNSTABLE_NFS
1946 # kernel v5.8-rc1~201^2~75
1947 # mm/writeback: discard NR_UNSTABLE_NFS, use NR_WRITEBACK instead
1949 AC_DEFUN([LIBCFS_SRC_HAVE_NR_UNSTABLE_NFS], [
1950 LB2_LINUX_TEST_SRC([nr_unstable_nfs_exists], [
1951 #include <linux/mm.h>
1955 i = NR_UNSTABLE_NFS;
1958 AC_DEFUN([LIBCFS_HAVE_NR_UNSTABLE_NFS], [
1959 AC_MSG_CHECKING([if NR_UNSTABLE_NFS still in use])
1960 LB2_LINUX_TEST_RESULT([nr_unstable_nfs_exists], [
1961 AC_DEFINE(HAVE_NR_UNSTABLE_NFS, 1,
1962 [NR_UNSTABLE_NFS is still in use.])
1964 ]) # LIBCFS_HAVE_NR_UNSTABLE_NFS
1967 # LIBCFS_HAVE_MMAP_LOCK
1969 # kernel v5.8-rc1~83^2~24
1970 # mmap locking API: rename mmap_sem to mmap_lock
1972 AC_DEFUN([LIBCFS_SRC_HAVE_MMAP_LOCK], [
1973 LB2_LINUX_TEST_SRC([mmap_write_lock], [
1974 #include <linux/mm.h>
1976 mmap_write_lock(NULL);
1979 AC_DEFUN([LIBCFS_HAVE_MMAP_LOCK], [
1980 AC_MSG_CHECKING([if mmap_lock API is available])
1981 LB2_LINUX_TEST_RESULT([mmap_write_lock], [
1982 AC_DEFINE(HAVE_MMAP_LOCK, 1,
1983 [mmap_lock API is available.])
1985 ]) # LIBCFS_HAVE_MMAP_LOCK
1988 # LIBCFS_KERNEL_SETSOCKOPT
1990 # kernel v5.8-rc1~165^2~59^2
1991 # net: remove kernel_setsockopt
1992 AC_DEFUN([LIBCFS_SRC_KERNEL_SETSOCKOPT], [
1993 LB2_LINUX_TEST_SRC([kernel_setsockopt_exists], [
1994 #include <linux/net.h>
1996 kernel_setsockopt(NULL, 0, 0, NULL, 0);
1999 AC_DEFUN([LIBCFS_KERNEL_SETSOCKOPT], [
2000 AC_MSG_CHECKING([if kernel_setsockopt still in use])
2001 LB2_LINUX_TEST_RESULT([kernel_setsockopt_exists], [
2002 AC_DEFINE(HAVE_KERNEL_SETSOCKOPT, 1,
2003 [kernel_setsockopt still in use])
2005 ]) # LIBCFS_KERNEL_SETSOCKOPT
2008 # LIBCFS_KEY_NEED_UNLINK
2010 # kernel 5.8 commit 8c0637e950d68933a67f7438f779d79b049b5e5c
2011 # keys: Make the KEY_NEED_* perms an enum rather than a mask
2013 AC_DEFUN([LIBCFS_SRC_KEY_NEED_UNLINK], [
2014 LB2_LINUX_TEST_SRC([key_need_unlink_exists], [
2015 #include <linux/key.h>
2016 #include <linux/keyctl.h>
2018 lookup_user_key(0, 0, KEY_NEED_UNLINK);
2021 AC_DEFUN([LIBCFS_KEY_NEED_UNLINK], [
2022 AC_MSG_CHECKING([if KEY_NEED_UNLINK exists])
2023 LB2_LINUX_TEST_RESULT([key_need_unlink_exists], [
2024 AC_DEFINE(HAVE_KEY_NEED_UNLINK, 1,
2025 [KEY_NEED_UNLINK exists])
2027 ]) # LIBCFS_KEY_NEED_UNLINK
2030 # LIBCFS_SEC_RELEASE_SECCTX
2032 # kernel linux-hwe-5.8 (5.8.0-22.23~20.04.1)
2033 # LSM: Use lsmcontext in security_release_secctx
2034 AC_DEFUN([LIBCFS_SRC_SEC_RELEASE_SECCTX], [
2035 LB2_LINUX_TEST_SRC([security_release_secctx_1arg], [
2036 #include <linux/security.h>
2038 security_release_secctx(NULL);
2041 AC_DEFUN([LIBCFS_SEC_RELEASE_SECCTX], [
2042 AC_MSG_CHECKING([if security_release_secctx has 1 arg])
2043 LB2_LINUX_TEST_RESULT([security_release_secctx_1arg], [
2044 AC_DEFINE(HAVE_SEC_RELEASE_SECCTX_1ARG, 1,
2045 [security_release_secctx has 1 arg.])
2047 ]) # LIBCFS_SEC_RELEASE_SECCTX
2050 # LIBCFS_HAVE_KFREE_SENSITIVE
2052 # kernel v5.10-rc1~3
2053 # mm: remove kzfree() compatibility definition
2055 AC_DEFUN([LIBCFS_SRC_HAVE_KFREE_SENSITIVE], [
2056 LB2_LINUX_TEST_SRC([kfree_sensitive_exists], [
2057 #include <linux/slab.h>
2059 kfree_sensitive(NULL);
2062 AC_DEFUN([LIBCFS_HAVE_KFREE_SENSITIVE], [
2063 AC_MSG_CHECKING([if kfree_sensitive() is available])
2064 LB2_LINUX_TEST_RESULT([kfree_sensitive_exists], [
2065 AC_DEFINE(HAVE_KFREE_SENSITIVE, 1,
2066 [kfree_sensitive() is available.])
2068 ]) # LIBCFS_HAVE_KFREE_SENSITIVE
2071 # LIBCFS_HAVE_CRYPTO_SHA2_HEADER
2073 # Kernel v5.10-rc1-114-ga24d22b225ce
2074 # crypto: sha - split sha.h into sha1.h and sha2.h
2076 AC_DEFUN([LIBCFS_SRC_HAVE_CRYPTO_SHA2_HEADER], [
2077 LB2_CHECK_LINUX_HEADER_SRC([crypto/sha2.h], [-Werror])
2079 AC_DEFUN([LIBCFS_HAVE_CRYPTO_SHA2_HEADER], [
2080 LB2_CHECK_LINUX_HEADER_RESULT([crypto/sha2.h], [
2081 AC_DEFINE(HAVE_CRYPTO_SHA2_HEADER, 1,
2082 [crypto/sha2.h is present])
2084 ]) # LIBCFS_HAVE_CRYPTO_SHA2_HEADER
2087 # LIBCFS_HAVE_LIST_CMP_FUNC_T
2089 # kernel 5.10.70 commit 4f0f586bf0c898233d8f316f471a21db2abd522d
2090 # treewide: Change list_sort to use const pointers
2091 AC_DEFUN([LIBCFS_SRC_HAVE_LIST_CMP_FUNC_T], [
2092 LB2_LINUX_TEST_SRC([list_cmp_func_t_exists], [
2093 #include <linux/list_sort.h>
2095 list_cmp_func_t cmp;
2099 AC_DEFUN([LIBCFS_HAVE_LIST_CMP_FUNC_T], [
2100 AC_MSG_CHECKING([if list_cmp_func_t type is defined])
2101 LB2_LINUX_TEST_RESULT([list_cmp_func_t_exists], [
2102 AC_DEFINE(HAVE_LIST_CMP_FUNC_T, 1,
2103 [list_cmp_func_t type is defined])
2105 ]) # LIBCFS_HAVE_LIST_CMP_FUNC_T
2108 # LIBCFS_NLA_STRLCPY
2110 # Kernel version 5.10-rc3 commit 872f690341948b502c93318f806d821c56772c42
2111 # replaced nla_strlcpy() with nla_strscpy().
2113 AC_DEFUN([LIBCFS_SRC_NLA_STRLCPY], [
2114 LB2_LINUX_TEST_SRC([nla_strlcpy], [
2115 #include <net/netlink.h>
2117 if (nla_strlcpy(NULL, NULL, 0) == 0)
2121 AC_DEFUN([LIBCFS_NLA_STRLCPY], [
2122 AC_MSG_CHECKING([if 'nla_strlcpy()' still exists])
2123 LB2_LINUX_TEST_RESULT([nla_strlcpy], [
2124 AC_DEFINE(HAVE_NLA_STRLCPY, 1,
2125 ['nla_strlcpy' is available])
2127 ]) # LIBCFS_NLA_STRLCPY
2130 # LIBCFS_LINUX_FORTIFY_STRING_HEADER
2132 # Linux v5.11-11104-ga28a6e860c6c
2133 # string.h: move fortified functions definitions in a dedicated header.
2135 AC_DEFUN([LIBCFS_SRC_LINUX_FORTIFY_STRING_HEADER],[
2136 LB2_LINUX_TEST_SRC([linux_fortify_string_header], [
2137 #include <linux/fortify-string.h>
2141 AC_DEFUN([LIBCFS_LINUX_FORTIFY_STRING_HEADER],[
2142 AC_MSG_CHECKING([Is linux/fortify-string.h header available])
2143 LB2_LINUX_TEST_RESULT([linux_fortify_string_header], [
2144 AC_DEFINE(HAVE_LINUX_FORTIFY_STRING_HEADER, 1,
2145 [linux/fortify-string.h header available])
2147 ]) # LIBCFS_LINUX_FORTIFY_STRING_HEADER
2150 # LIBCFS_HAVE_CIPHER_HEADER
2152 # Kernel 5.12 commit 0eb76ba29d16df2951d37c54ca279c4e5630b071
2153 # crypto: remove cipher routines from public crypto API
2155 AC_DEFUN([LIBCFS_SRC_HAVE_CIPHER_HEADER], [
2156 LB2_CHECK_LINUX_HEADER_SRC([crypto/internal/cipher.h], [-Werror])
2158 AC_DEFUN([LIBCFS_HAVE_CIPHER_HEADER], [
2159 LB2_CHECK_LINUX_HEADER_RESULT([crypto/internal/cipher.h], [
2160 AC_DEFINE(HAVE_CIPHER_H, 1,
2161 [crypto/internal/cipher.h is present])
2163 ]) # LIBCFS_HAVE_CIPHER_HEADER
2166 # LIBCFS_HAVE_TASK_RUNNING
2168 # Kernel 5.13-rc6 commit b03fbd4ff24c5f075e58eb19261d5f8b3e40d
2169 # introduced task_is_running() macro.
2171 AC_DEFUN([LIBCFS_SRC_HAVE_TASK_IS_RUNNING], [
2172 LB2_LINUX_TEST_SRC([task_is_running], [
2173 #include <linux/sched.h>
2175 if (task_is_running(current))
2179 AC_DEFUN([LIBCFS_HAVE_TASK_IS_RUNNING], [
2180 AC_MSG_CHECKING([if task_is_running() is defined])
2181 LB2_LINUX_TEST_RESULT([task_is_running], [
2182 AC_DEFINE(HAVE_TASK_IS_RUNNING, 1,
2183 [task_is_running() is defined])
2185 ]) # LIBCFS_HAVE_TASK_IS_RUNNING
2188 # LIBCFS_LINUX_STDARG_HEADER
2190 # Kernel 5.14-rc5 commit c0891ac15f0428ffa81b2e818d416bdf3cb74ab6
2191 # isystem: ship and use stdarg.h
2193 AC_DEFUN([LIBCFS_SRC_LINUX_STDARG_HEADER], [
2194 LB2_CHECK_LINUX_HEADER_SRC([linux/stdarg.h], [-Werror])
2196 AC_DEFUN([LIBCFS_LINUX_STDARG_HEADER], [
2197 LB2_CHECK_LINUX_HEADER_RESULT([linux/stdarg.h], [
2198 AC_DEFINE(HAVE_LINUX_STDARG_HEADER, 1,
2199 [linux/stdarg.h is present])
2201 ]) # LIBCFS_LINUX_STDARG_HEADER
2204 # LIBCFS_HAVE_PANIC_NOTIFIER_HEADER
2206 # Kernel 5.14 commit f39650de687e35766572ac89dbcd16a5911e2f0a
2207 # kernel.h: split out panic and oops helpers
2209 AC_DEFUN([LIBCFS_SRC_HAVE_PANIC_NOTIFIER_HEADER], [
2210 LB2_CHECK_LINUX_HEADER_SRC([linux/panic_notifier.h], [-Werror])
2212 AC_DEFUN([LIBCFS_HAVE_PANIC_NOTIFIER_HEADER], [
2213 LB2_CHECK_LINUX_HEADER_RESULT([linux/panic_notifier.h], [
2214 AC_DEFINE(HAVE_PANIC_NOTIFIER_H, 1,
2215 [linux/panic_notifier.h is present])
2217 ]) # LIBCFS_HAVE_PANIC_NOTIFIER_HEADER
2220 # LIBCFS_PARAM_SET_UINT_MINMAX
2222 # Kernel 5.15-rc1 commit 2a14c9ae15a38148484a128b84bff7e9ffd90d68
2223 # moved param_set_uint_minmax to common code
2225 AC_DEFUN([LIBCFS_SRC_PARAM_SET_UINT_MINMAX],[
2226 LB2_LINUX_TEST_SRC([param_set_uint_minmax], [
2227 #include <linux/moduleparam.h>
2229 param_set_uint_minmax(NULL, NULL, 0, 0);
2232 AC_DEFUN([LIBCFS_PARAM_SET_UINT_MINMAX],[
2233 AC_MSG_CHECKING([does function 'param_set_uint_minmax' exist])
2234 LB2_LINUX_TEST_RESULT([param_set_uint_minmax], [
2235 AC_DEFINE(HAVE_PARAM_SET_UINT_MINMAX, 1,
2236 ['param_set_uint_minmax' is available])
2238 ]) # LIBCFS_PARAM_SET_UINT_MINMAX
2241 # LIBCFS_LINUX_BLK_INTEGRITY_HEADER
2243 # Kernel 5.15-rc6 commit fe45e630a1035aea94c29016f2598bbde149bbe3
2244 # block: move integrity handling out of <linux/blkdev.h>
2246 AC_DEFUN([LIBCFS_SRC_LINUX_BLK_INTEGRITY_HEADER], [
2247 LB2_CHECK_LINUX_HEADER_SRC([linux/blk-integrity.h], [-Werror])
2249 AC_DEFUN([LIBCFS_LINUX_BLK_INTEGRITY_HEADER], [
2250 LB2_CHECK_LINUX_HEADER_RESULT([linux/blk-integrity.h], [
2251 AC_DEFINE(HAVE_LINUX_BLK_INTEGRITY_HEADER, 1,
2252 [linux/blk-integrity.h is present])
2254 ]) # LIBCFS_LINUX_BLK_INTEGRITY_HEADER
2257 # LIBCFS_PDE_DATA_EXISTS
2259 # Linux commit v5.16-11573-g6dfbbae14a7b
2260 # introduce pde_data()
2261 # Linux commit v5.16-11574-g359745d78351
2264 AC_DEFUN([LIBCFS_SRC_PDE_DATA_EXISTS],[
2265 LB2_LINUX_TEST_SRC([pde_data], [
2266 #include <linux/proc_fs.h>
2268 struct inode *inode = NULL;
2269 void *data =pde_data(inode);
2273 AC_DEFUN([LIBCFS_PDE_DATA_EXISTS],[
2274 AC_MSG_CHECKING([does function 'pde_data' exist])
2275 LB2_LINUX_TEST_RESULT([pde_data], [
2276 AC_DEFINE(HAVE_pde_data, 1, [function pde_data() available])
2278 AC_DEFINE(pde_data(inode), PDE_DATA(inode),
2279 [function pde_data() unavailable])
2281 ]) # LIBCFS_PDE_DATA_EXISTS
2284 # LIBCFS_BIO_ALLOC_WITH_BDEV
2286 # Linux commit v5.17-rc2-21-g07888c665b40
2287 # block: pass a block_device and opf to bio_alloc
2289 AC_DEFUN([LIBCFS_SRC_BIO_ALLOC_WITH_BDEV],[
2290 LB2_LINUX_TEST_SRC([bio_alloc_with_bdev], [
2291 #include <linux/bio.h>
2293 struct block_device *bdev = NULL;
2294 unsigned short nr_vecs = 1;
2295 gfp_t gfp = GFP_KERNEL;
2296 struct bio *bio = bio_alloc(bdev, nr_vecs, REQ_OP_WRITE, gfp);
2300 AC_DEFUN([LIBCFS_BIO_ALLOC_WITH_BDEV],[
2301 AC_MSG_CHECKING([does bio_alloc() takes a struct block_device])
2302 LB2_LINUX_TEST_RESULT([bio_alloc_with_bdev], [
2303 AC_DEFINE(HAVE_BIO_ALLOC_WITH_BDEV, 1,
2304 [bio_alloc() takes a struct block_device])
2306 ]) # LIBCFS_BIO_ALLOC_WITH_BDEV
2309 # LIBCFS_TIMER_DELETE_SYNC
2311 # Linux commit v6.1-rc1-7-g9a5a30568697
2312 # timers: Get rid of del_singleshot_timer_sync()
2313 # Linux commit v6.1-rc1-11-g9b13df3fb64e
2314 # timers: Rename del_timer_sync() to timer_delete_sync()
2316 AC_DEFUN([LIBCFS_SRC_TIMER_DELETE_SYNC],[
2317 LB2_LINUX_TEST_SRC([timer_delete_sync], [
2318 #include <linux/timer.h>
2320 struct timer_list *timer = NULL;
2321 (void)timer_delete_sync(timer);
2324 AC_DEFUN([LIBCFS_TIMER_DELETE_SYNC],[
2325 AC_MSG_CHECKING([is timer_delete_sync() available])
2326 LB2_LINUX_TEST_RESULT([timer_delete_sync], [
2327 AC_DEFINE(HAVE_TIMER_DELETE_SYNC, 1,
2328 [timer_delete_sync() is available])
2330 AC_DEFINE(timer_delete_sync(t), del_timer_sync(t),
2331 [timer_delete_sync() not is available])
2333 ]) # LIBCFS_TIMER_DELETE_SYNC
2336 # LIBCFS_TIMER_DELETE_SYNC
2338 # Linux commit v6.1-rc1-12-gbb663f0f3c39
2339 # timers: Rename del_timer() to timer_delete()
2341 AC_DEFUN([LIBCFS_SRC_TIMER_DELETE],[
2342 LB2_LINUX_TEST_SRC([timer_delete], [
2343 #include <linux/timer.h>
2345 struct timer_list *timer = NULL;
2346 (void)timer_delete(timer);
2349 AC_DEFUN([LIBCFS_TIMER_DELETE],[
2350 AC_MSG_CHECKING([is timer_delete() available])
2351 LB2_LINUX_TEST_RESULT([timer_delete], [
2352 AC_DEFINE(HAVE_TIMER_DELETE, 1,
2353 [timer_delete() is available])
2355 AC_DEFINE(timer_delete(t), del_timer(t),
2356 [timer_delete() not is available])
2358 ]) # LIBCFS_TIMER_DELETE
2361 dnl # Generate and compile all of the kernel API test cases to determine
2362 dnl # which interfaces are available. By invoking the kernel build system
2363 dnl # only once the compilation can be done in parallel significantly
2364 dnl # speeding up the process.
2366 AC_DEFUN([LIBCFS_PROG_LINUX_SRC], [
2368 LIBCFS_SRC_KTIME_GET_TS64
2370 LIBCFS_SRC_PREPARE_TO_WAIT_EVENT
2371 LIBCFS_SRC_KERNEL_PARAM_OPS
2372 LIBCFS_SRC_KTIME_ADD
2373 LIBCFS_SRC_KTIME_AFTER
2374 LIBCFS_SRC_KTIME_BEFORE
2375 LIBCFS_SRC_KTIME_COMPARE
2376 LIBCFS_SRC_SHRINKER_COUNT
2378 LIBCFS_SRC_MATCH_WILDCARD
2380 LIBCFS_SRC_HAVE_MAPPING_AS_EXITING_FLAG
2382 LIBCFS_SRC_IOV_ITER_HAS_TYPE
2384 LIBCFS_SRC_HAVE_GLOB
2386 LIBCFS_SRC_HLIST_ADD_AFTER
2387 LIBCFS_SRC_TIMESPEC64
2388 LIBCFS_SRC_KTIME_GET_NS
2389 LIBCFS_SRC_KTIME_GET_REAL_TS64
2390 LIBCFS_SRC_KTIME_GET_REAL_SECONDS
2391 LIBCFS_SRC_KTIME_GET_REAL_NS
2392 LIBCFS_SRC_KTIME_TO_TIMESPEC64
2393 LIBCFS_SRC_TIMESPEC64_SUB
2394 LIBCFS_SRC_TIMESPEC64_TO_KTIME
2396 LIBCFS_SRC_KTIME_GET_SECONDS
2397 LIBCFS_SRC_WAIT_WOKEN
2399 LIBCFS_SRC_KTIME_MS_DELTA
2401 LIBCFS_SRC_KERNEL_PARAM_LOCK
2403 LIBCFS_SRC_STRSCPY_EXISTS
2404 LIBCFS_SRC_HAVE_TOPOLOGY_SIBLING_CPUMASK
2406 LIBCFS_SRC_KSTRTOBOOL_FROM_USER
2407 LIBCFS_SRC_NETLINK_CALLBACK_START
2409 LIBCFS_SRC_CRYPTO_HASH_HELPERS
2410 LIBCFS_SRC_RHASHTABLE_REPLACE
2412 LIBCFS_SRC_BROKEN_HASH_64
2413 LIBCFS_SRC_STACKTRACE_OPS_ADDRESS_RETURN_INT
2414 LIBCFS_SRC_GET_USER_PAGES_6ARG
2415 LIBCFS_SRC_STRINGHASH
2417 LIBCFS_SRC_RHASHTABLE_INSERT_FAST
2418 LIBCFS_SRC_RHASHTABLE_WALK_INIT_3ARG
2420 LIBCFS_SRC_HAVE_NR_ZONE_WRITE_PENDING
2421 LIBCFS_SRC_RHASHTABLE_LOOKUP
2423 LIBCFS_SRC_STACKTRACE_OPS
2425 LIBCFS_SRC_GET_USER_PAGES_GUP_FLAGS
2426 LIBCFS_SRC_RHASHTABLE_WALK_ENTER
2428 LIBCFS_SRC_HOTPLUG_STATE_MACHINE
2430 LIBCFS_SRC_NL_EXT_ACK
2431 LIBCFS_SRC_RHASHTABLE_LOOKUP_GET_INSERT_FAST
2432 LIBCFS_SRC_SCHED_HEADERS
2433 LIBCFS_SRC_KREF_READ
2434 LIBCFS_SRC_RHT_BUCKET_VAR
2436 LIBCFS_SRC_CPUS_READ_LOCK
2437 LIBCFS_SRC_HAVE_PROCESSOR_HEADER
2438 LIBCFS_SRC_WAIT_QUEUE_TASK_LIST_RENAME
2439 LIBCFS_SRC_WAIT_BIT_QUEUE_ENTRY_EXISTS
2440 LIBCFS_SRC_REFCOUNT_T
2441 LIBCFS_SRC_MEMALLOC_NORECLAIM
2443 LIBCFS_SRC_NLA_STRDUP
2444 LIBCFS_SRC_WAIT_QUEUE_ENTRY
2446 LIBCFS_SRC_DEFINE_TIMER
2447 LIBCFS_SRC_NEW_KERNEL_WRITE
2448 LIBCFS_SRC_NEW_KERNEL_READ
2450 LIBCFS_SRC_BITMAP_TO_ARR32
2451 LIBCFS_SRC_TIMER_SETUP
2453 LIBCFS_SRC_HAVE_NS_TO_TIMESPEC64
2454 LIBCFS_SRC_WAIT_VAR_EVENT
2456 LIBCFS_SRC_BITMAP_ALLOC
2457 LIBCFS_SRC_CLEAR_AND_WAKE_UP_BIT
2459 LIBCFS_SRC_TCP_SOCK_SET_NODELAY
2460 LIBCFS_SRC_TCP_SOCK_SET_KEEPIDLE
2462 LIBCFS_SRC_XARRAY_SUPPORT
2463 LIBCFS_SRC_NL_DUMP_EXT_ACK
2465 LIBCFS_SRC_HAVE_IOV_ITER_TYPE
2467 LIBCFS_SRC_MM_TOTALRAM_PAGES_FUNC
2468 LIBCFS_SRC_GET_REQUEST_KEY_AUTH
2470 LIBCFS_SRC_KOBJ_TYPE_DEFAULT_GROUPS
2472 LIBCFS_SRC_LOOKUP_USER_KEY
2473 LIBCFS_SRC_CACHE_DETAIL_WRITERS
2475 LIBCFS_SRC_GENL_DUMPIT_INFO
2477 LIBCFS_SRC_HAVE_PROC_OPS
2479 LIBCFS_SRC_TCP_SOCK_SET_QUICKACK
2480 LIBCFS_SRC_TCP_SOCK_SET_KEEPINTVL
2481 LIBCFS_SRC_TCP_SOCK_SET_KEEPCNT
2483 LIBCFS_SRC_IP6_SET_PREF
2484 LIBCFS_SRC_VMALLOC_2ARGS
2485 LIBCFS_SRC_HAVE_NR_UNSTABLE_NFS
2486 LIBCFS_SRC_HAVE_MMAP_LOCK
2487 LIBCFS_SRC_KERNEL_SETSOCKOPT
2488 LIBCFS_SRC_KEY_NEED_UNLINK
2489 LIBCFS_SRC_SEC_RELEASE_SECCTX
2491 LIBCFS_SRC_HAVE_KFREE_SENSITIVE
2492 LIBCFS_SRC_HAVE_CRYPTO_SHA2_HEADER
2493 LIBCFS_SRC_HAVE_LIST_CMP_FUNC_T
2494 LIBCFS_SRC_NLA_STRLCPY
2496 LIBCFS_SRC_LINUX_FORTIFY_STRING_HEADER
2497 LIBCFS_SRC_HAVE_CIPHER_HEADER
2499 LIBCFS_SRC_HAVE_TASK_IS_RUNNING
2501 LIBCFS_SRC_LINUX_STDARG_HEADER
2502 LIBCFS_SRC_HAVE_PANIC_NOTIFIER_HEADER
2504 LIBCFS_SRC_PARAM_SET_UINT_MINMAX
2506 LIBCFS_SRC_PDE_DATA_EXISTS
2507 LIBCFS_SRC_BIO_ALLOC_WITH_BDEV
2509 LIBCFS_SRC_TIMER_DELETE_SYNC
2510 LIBCFS_SRC_TIMER_DELETE
2514 dnl # Check results of kernel interface tests.
2516 AC_DEFUN([LIBCFS_PROG_LINUX_RESULTS], [
2518 LIBCFS_KTIME_GET_TS64
2520 LIBCFS_PREPARE_TO_WAIT_EVENT
2521 LIBCFS_KERNEL_PARAM_OPS
2525 LIBCFS_KTIME_COMPARE
2526 LIBCFS_SHRINKER_COUNT
2528 LIBCFS_MATCH_WILDCARD
2530 LIBCFS_HAVE_MAPPING_AS_EXITING_FLAG
2532 LIBCFS_IOV_ITER_HAS_TYPE
2536 LIBCFS_HLIST_ADD_AFTER
2539 LIBCFS_KTIME_GET_REAL_TS64
2540 LIBCFS_KTIME_GET_REAL_SECONDS
2541 LIBCFS_KTIME_GET_REAL_NS
2542 LIBCFS_KTIME_TO_TIMESPEC64
2543 LIBCFS_TIMESPEC64_SUB
2544 LIBCFS_TIMESPEC64_TO_KTIME
2546 LIBCFS_KTIME_GET_SECONDS
2549 LIBCFS_KTIME_MS_DELTA
2551 LIBCFS_KERNEL_PARAM_LOCK
2553 LIBCFS_STRSCPY_EXISTS
2554 LIBCFS_HAVE_TOPOLOGY_SIBLING_CPUMASK
2556 LIBCFS_KSTRTOBOOL_FROM_USER
2557 LIBCFS_NETLINK_CALLBACK_START
2559 LIBCFS_CRYPTO_HASH_HELPERS
2560 LIBCFS_RHASHTABLE_REPLACE
2562 LIBCFS_BROKEN_HASH_64
2563 LIBCFS_STACKTRACE_OPS_ADDRESS_RETURN_INT
2564 LIBCFS_GET_USER_PAGES_6ARG
2567 LIBCFS_RHASHTABLE_INSERT_FAST
2568 LIBCFS_RHASHTABLE_WALK_INIT_3ARG
2570 LIBCFS_HAVE_NR_ZONE_WRITE_PENDING
2571 LIBCFS_RHASHTABLE_LOOKUP
2573 LIBCFS_STACKTRACE_OPS
2575 LIBCFS_GET_USER_PAGES_GUP_FLAGS
2576 LIBCFS_RHASHTABLE_WALK_ENTER
2578 LIBCFS_HOTPLUG_STATE_MACHINE
2581 LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
2582 LIBCFS_SCHED_HEADERS
2584 LIBCFS_RHT_BUCKET_VAR
2586 LIBCFS_CPUS_READ_LOCK
2587 LIBCFS_HAVE_PROCESSOR_HEADER
2588 LIBCFS_WAIT_QUEUE_TASK_LIST_RENAME
2589 LIBCFS_WAIT_BIT_QUEUE_ENTRY_EXISTS
2591 LIBCFS_MEMALLOC_NORECLAIM
2594 LIBCFS_WAIT_QUEUE_ENTRY
2597 LIBCFS_NEW_KERNEL_WRITE
2598 LIBCFS_NEW_KERNEL_READ
2600 LIBCFS_BITMAP_TO_ARR32
2603 LIBCFS_HAVE_NS_TO_TIMESPEC64
2604 LIBCFS_WAIT_VAR_EVENT
2607 LIBCFS_CLEAR_AND_WAKE_UP_BIT
2609 LIBCFS_TCP_SOCK_SET_NODELAY
2610 LIBCFS_TCP_SOCK_SET_KEEPIDLE
2612 LIBCFS_XARRAY_SUPPORT
2613 LIBCFS_NL_DUMP_EXT_ACK
2615 LIBCFS_HAVE_IOV_ITER_TYPE
2617 LIBCFS_MM_TOTALRAM_PAGES_FUNC
2618 LIBCFS_GET_REQUEST_KEY_AUTH
2620 LIBCFS_KOBJ_TYPE_DEFAULT_GROUPS
2622 LIBCFS_LOOKUP_USER_KEY
2623 LIBCFS_CACHE_DETAIL_WRITERS
2625 LIBCFS_GENL_DUMPIT_INFO
2627 LIBCFS_HAVE_PROC_OPS
2629 LIBCFS_TCP_SOCK_SET_QUICKACK
2630 LIBCFS_TCP_SOCK_SET_KEEPINTVL
2631 LIBCFS_TCP_SOCK_SET_KEEPCNT
2634 LIBCFS_VMALLOC_2ARGS
2635 LIBCFS_HAVE_NR_UNSTABLE_NFS
2636 LIBCFS_HAVE_MMAP_LOCK
2637 LIBCFS_KERNEL_SETSOCKOPT
2638 LIBCFS_KEY_NEED_UNLINK
2639 LIBCFS_SEC_RELEASE_SECCTX
2641 LIBCFS_HAVE_KFREE_SENSITIVE
2642 LIBCFS_HAVE_CRYPTO_SHA2_HEADER
2643 LIBCFS_HAVE_LIST_CMP_FUNC_T
2646 LIBCFS_LINUX_FORTIFY_STRING_HEADER
2647 LIBCFS_HAVE_CIPHER_HEADER
2649 LIBCFS_HAVE_TASK_IS_RUNNING
2651 LIBCFS_LINUX_STDARG_HEADER
2652 LIBCFS_HAVE_PANIC_NOTIFIER_HEADER
2654 LIBCFS_PARAM_SET_UINT_MINMAX
2656 LIBCFS_PDE_DATA_EXISTS
2657 LIBCFS_BIO_ALLOC_WITH_BDEV
2659 LIBCFS_TIMER_DELETE_SYNC
2666 # LibCFS linux kernel checks
2668 AC_DEFUN([LIBCFS_PROG_LINUX], [
2669 AC_MSG_NOTICE([LibCFS kernel checks
2670 ==============================================================================])
2671 LIBCFS_CONFIG_PANIC_DUMPLOG
2673 # 4.6 - Export Check
2674 LIBCFS_EXPORT_KSET_FIND_OBJ
2675 # 4.13 - Export Check
2676 LIBCFS_EXPORT_SAVE_STACK_TRACE_TSK
2677 # 5.0 - Export Check
2679 # 5.7 - Export Check
2680 LIBCFS_KALLSYMS_LOOKUP
2681 ]) # LIBCFS_PROG_LINUX
2684 # LIBCFS_PATH_DEFAULTS
2686 # default paths for installed files
2688 AC_DEFUN([LIBCFS_PATH_DEFAULTS], [
2689 ]) # LIBCFS_PATH_DEFAULTS
2694 # other configure checks
2696 AC_DEFUN([LIBCFS_CONFIGURE], [
2697 AC_MSG_NOTICE([LibCFS core checks
2698 ==============================================================================])
2700 # libcfs/libcfs/util/nidstrings.c
2701 AC_CHECK_HEADERS([netdb.h asm/types.h endian.h])
2702 AC_CHECK_FUNCS([gethostbyname])
2703 AC_CHECK_FUNCS([getaddrinfo])
2705 # -------- Check for required packages --------------
2707 AC_MSG_NOTICE([LibCFS required packages checks
2708 ==============================================================================])
2710 AC_MSG_CHECKING([whether to enable readline support])
2711 AC_ARG_ENABLE(readline,
2712 AS_HELP_STRING([--disable-readline],
2713 [disable readline support]),
2714 [], [enable_readline="yes"])
2715 AC_MSG_RESULT([$enable_readline])
2718 AS_IF([test "x$enable_readline" = xyes], [
2719 AC_CHECK_LIB([readline], [readline], [
2720 LIBREADLINE="-lreadline"
2721 AC_DEFINE(HAVE_LIBREADLINE, 1,
2722 [readline library is available])
2725 AC_SUBST(ENABLE_READLINE, yes)
2727 AC_SUBST(ENABLE_READLINE, no)
2729 AC_SUBST(LIBREADLINE)
2731 AC_MSG_CHECKING([whether to use libpthread for libcfs library])
2732 AC_ARG_ENABLE([libpthread],
2733 AS_HELP_STRING([--disable-libpthread],
2734 [disable libpthread]),
2735 [], [enable_libpthread="yes"])
2736 AC_MSG_RESULT([$enable_libpthread])
2739 AS_IF([test "x$enable_libpthread" = xyes], [
2740 AC_CHECK_LIB([pthread], [pthread_create], [
2741 PTHREAD_LIBS="-lpthread"
2742 AC_DEFINE([HAVE_LIBPTHREAD], 1,
2743 [use libpthread for libcfs library])
2746 AC_SUBST(ENABLE_LIBPTHREAD, yes)
2748 AC_SUBST(ENABLE_LIBPTHREAD, no)
2749 AC_MSG_WARN([Using libpthread for libcfs library is disabled explicitly])
2751 AC_SUBST(PTHREAD_LIBS)
2752 ]) # LIBCFS_CONFIGURE
2755 # LIBCFS_CONFIG_FILES
2757 # files that should be generated with AC_OUTPUT
2759 AC_DEFUN([LIBCFS_CONFIG_FILES], [
2763 libcfs/autoconf/Makefile
2764 libcfs/include/Makefile
2765 libcfs/include/libcfs/Makefile
2766 libcfs/include/uapi/Makefile
2767 libcfs/include/libcfs/linux/Makefile
2768 libcfs/include/libcfs/util/Makefile
2769 libcfs/include/libcfs/crypto/Makefile
2770 libcfs/include/uapi/linux/Makefile
2771 libcfs/libcfs/Makefile
2772 libcfs/libcfs/autoMakefile
2773 libcfs/libcfs/linux/Makefile
2774 libcfs/libcfs/util/Makefile
2775 libcfs/libcfs/crypto/Makefile
2777 ]) # LIBCFS_CONFIG_FILES