xref: /freebsd/sys/contrib/openzfs/config/kernel-blk-queue.m4 (revision e1e636193db45630c7881246d25902e57c43d24e)
1dnl #
2dnl # 2.6.39 API change,
3dnl # blk_start_plug() and blk_finish_plug()
4dnl #
5AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE_PLUG], [
6	ZFS_LINUX_TEST_SRC([blk_plug], [
7		#include <linux/blkdev.h>
8	],[
9		struct blk_plug plug __attribute__ ((unused));
10
11		blk_start_plug(&plug);
12		blk_finish_plug(&plug);
13	])
14])
15
16AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_PLUG], [
17	AC_MSG_CHECKING([whether struct blk_plug is available])
18	ZFS_LINUX_TEST_RESULT([blk_plug], [
19		AC_MSG_RESULT(yes)
20	],[
21		ZFS_LINUX_TEST_ERROR([blk_plug])
22	])
23])
24
25dnl #
26dnl # 2.6.32 - 4.11: statically allocated bdi in request_queue
27dnl # 4.12: dynamically allocated bdi in request_queue
28dnl #
29AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE_BDI], [
30	ZFS_LINUX_TEST_SRC([blk_queue_bdi], [
31		#include <linux/blkdev.h>
32	],[
33		struct request_queue q;
34		struct backing_dev_info bdi;
35		q.backing_dev_info = &bdi;
36	])
37])
38
39AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_BDI], [
40	AC_MSG_CHECKING([whether blk_queue bdi is dynamic])
41	ZFS_LINUX_TEST_RESULT([blk_queue_bdi], [
42		AC_MSG_RESULT(yes)
43		AC_DEFINE(HAVE_BLK_QUEUE_BDI_DYNAMIC, 1,
44		    [blk queue backing_dev_info is dynamic])
45	],[
46		AC_MSG_RESULT(no)
47	])
48])
49
50dnl #
51dnl # 5.9: added blk_queue_update_readahead(),
52dnl # 5.15: renamed to disk_update_readahead()
53dnl #
54AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE_UPDATE_READAHEAD], [
55	ZFS_LINUX_TEST_SRC([blk_queue_update_readahead], [
56		#include <linux/blkdev.h>
57	],[
58		struct request_queue q;
59		blk_queue_update_readahead(&q);
60	])
61
62	ZFS_LINUX_TEST_SRC([disk_update_readahead], [
63		#include <linux/blkdev.h>
64	],[
65		struct gendisk disk;
66		disk_update_readahead(&disk);
67	])
68])
69
70AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_UPDATE_READAHEAD], [
71	AC_MSG_CHECKING([whether blk_queue_update_readahead() exists])
72	ZFS_LINUX_TEST_RESULT([blk_queue_update_readahead], [
73		AC_MSG_RESULT(yes)
74		AC_DEFINE(HAVE_BLK_QUEUE_UPDATE_READAHEAD, 1,
75		    [blk_queue_update_readahead() exists])
76	],[
77		AC_MSG_RESULT(no)
78
79		AC_MSG_CHECKING([whether disk_update_readahead() exists])
80		ZFS_LINUX_TEST_RESULT([disk_update_readahead], [
81			AC_MSG_RESULT(yes)
82			AC_DEFINE(HAVE_DISK_UPDATE_READAHEAD, 1,
83			    [disk_update_readahead() exists])
84		],[
85			AC_MSG_RESULT(no)
86		])
87	])
88])
89
90dnl #
91dnl # 5.19: bdev_max_discard_sectors() available
92dnl # 2.6.32: blk_queue_discard() available
93dnl #
94AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE_DISCARD], [
95	ZFS_LINUX_TEST_SRC([bdev_max_discard_sectors], [
96		#include <linux/blkdev.h>
97	],[
98		struct block_device *bdev __attribute__ ((unused)) = NULL;
99		unsigned int error __attribute__ ((unused));
100
101		error = bdev_max_discard_sectors(bdev);
102	])
103
104	ZFS_LINUX_TEST_SRC([blk_queue_discard], [
105		#include <linux/blkdev.h>
106	],[
107		struct request_queue r;
108		struct request_queue *q = &r;
109		int value __attribute__ ((unused));
110		memset(q, 0, sizeof(r));
111		value = blk_queue_discard(q);
112	],[-Wframe-larger-than=8192])
113])
114
115AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_DISCARD], [
116	AC_MSG_CHECKING([whether bdev_max_discard_sectors() is available])
117	ZFS_LINUX_TEST_RESULT([bdev_max_discard_sectors], [
118		AC_MSG_RESULT(yes)
119		AC_DEFINE(HAVE_BDEV_MAX_DISCARD_SECTORS, 1,
120		    [bdev_max_discard_sectors() is available])
121	],[
122		AC_MSG_RESULT(no)
123
124		AC_MSG_CHECKING([whether blk_queue_discard() is available])
125		ZFS_LINUX_TEST_RESULT([blk_queue_discard], [
126			AC_MSG_RESULT(yes)
127			AC_DEFINE(HAVE_BLK_QUEUE_DISCARD, 1,
128			    [blk_queue_discard() is available])
129		],[
130			ZFS_LINUX_TEST_ERROR([blk_queue_discard])
131		])
132	])
133])
134
135dnl #
136dnl # 5.19: bdev_max_secure_erase_sectors() available
137dnl # 4.8: blk_queue_secure_erase() available
138dnl # 2.6.36: blk_queue_secdiscard() available
139dnl #
140AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE_SECURE_ERASE], [
141	ZFS_LINUX_TEST_SRC([bdev_max_secure_erase_sectors], [
142		#include <linux/blkdev.h>
143	],[
144		struct block_device *bdev __attribute__ ((unused)) = NULL;
145		unsigned int error __attribute__ ((unused));
146
147		error = bdev_max_secure_erase_sectors(bdev);
148	])
149
150	ZFS_LINUX_TEST_SRC([blk_queue_secure_erase], [
151		#include <linux/blkdev.h>
152	],[
153		struct request_queue r;
154		struct request_queue *q = &r;
155		int value __attribute__ ((unused));
156		memset(q, 0, sizeof(r));
157		value = blk_queue_secure_erase(q);
158	],[-Wframe-larger-than=8192])
159
160	ZFS_LINUX_TEST_SRC([blk_queue_secdiscard], [
161		#include <linux/blkdev.h>
162	],[
163		struct request_queue r;
164		struct request_queue *q = &r;
165		int value __attribute__ ((unused));
166		memset(q, 0, sizeof(r));
167		value = blk_queue_secdiscard(q);
168	])
169])
170
171AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_SECURE_ERASE], [
172	AC_MSG_CHECKING([whether bdev_max_secure_erase_sectors() is available])
173	ZFS_LINUX_TEST_RESULT([bdev_max_secure_erase_sectors], [
174		AC_MSG_RESULT(yes)
175		AC_DEFINE(HAVE_BDEV_MAX_SECURE_ERASE_SECTORS, 1,
176		    [bdev_max_secure_erase_sectors() is available])
177	],[
178		AC_MSG_RESULT(no)
179
180		AC_MSG_CHECKING([whether blk_queue_secure_erase() is available])
181		ZFS_LINUX_TEST_RESULT([blk_queue_secure_erase], [
182			AC_MSG_RESULT(yes)
183			AC_DEFINE(HAVE_BLK_QUEUE_SECURE_ERASE, 1,
184			    [blk_queue_secure_erase() is available])
185		],[
186			AC_MSG_RESULT(no)
187
188			AC_MSG_CHECKING([whether blk_queue_secdiscard() is available])
189			ZFS_LINUX_TEST_RESULT([blk_queue_secdiscard], [
190				AC_MSG_RESULT(yes)
191			AC_DEFINE(HAVE_BLK_QUEUE_SECDISCARD, 1,
192				    [blk_queue_secdiscard() is available])
193			],[
194				ZFS_LINUX_TEST_ERROR([blk_queue_secure_erase])
195			])
196		])
197	])
198])
199
200dnl #
201dnl # 4.16 API change,
202dnl # Introduction of blk_queue_flag_set and blk_queue_flag_clear
203dnl #
204AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE_FLAG_SET], [
205	ZFS_LINUX_TEST_SRC([blk_queue_flag_set], [
206		#include <linux/kernel.h>
207		#include <linux/blkdev.h>
208	],[
209		struct request_queue *q = NULL;
210		blk_queue_flag_set(0, q);
211	])
212])
213
214AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_FLAG_SET], [
215	AC_MSG_CHECKING([whether blk_queue_flag_set() exists])
216	ZFS_LINUX_TEST_RESULT([blk_queue_flag_set], [
217		AC_MSG_RESULT(yes)
218		AC_DEFINE(HAVE_BLK_QUEUE_FLAG_SET, 1,
219		    [blk_queue_flag_set() exists])
220	],[
221		AC_MSG_RESULT(no)
222	])
223])
224
225AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE_FLAG_CLEAR], [
226	ZFS_LINUX_TEST_SRC([blk_queue_flag_clear], [
227		#include <linux/kernel.h>
228		#include <linux/blkdev.h>
229	],[
230		struct request_queue *q = NULL;
231		blk_queue_flag_clear(0, q);
232	])
233])
234
235AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_FLAG_CLEAR], [
236	AC_MSG_CHECKING([whether blk_queue_flag_clear() exists])
237	ZFS_LINUX_TEST_RESULT([blk_queue_flag_clear], [
238		AC_MSG_RESULT(yes)
239		AC_DEFINE(HAVE_BLK_QUEUE_FLAG_CLEAR, 1,
240		    [blk_queue_flag_clear() exists])
241	],[
242		AC_MSG_RESULT(no)
243	])
244])
245
246dnl #
247dnl # 2.6.36 API change,
248dnl # Added blk_queue_flush() interface, while the previous interface
249dnl # was available to all the new one is GPL-only.  Thus in addition to
250dnl # detecting if this function is available we determine if it is
251dnl # GPL-only.  If the GPL-only interface is there we implement our own
252dnl # compatibility function, otherwise we use the function.  The hope
253dnl # is that long term this function will be opened up.
254dnl #
255dnl # 4.7 API change,
256dnl # Replace blk_queue_flush with blk_queue_write_cache
257dnl #
258AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE_FLUSH], [
259	ZFS_LINUX_TEST_SRC([blk_queue_flush], [
260		#include <linux/blkdev.h>
261	], [
262		struct request_queue *q __attribute__ ((unused)) = NULL;
263		(void) blk_queue_flush(q, REQ_FLUSH);
264	], [], [ZFS_META_LICENSE])
265
266	ZFS_LINUX_TEST_SRC([blk_queue_write_cache], [
267		#include <linux/kernel.h>
268		#include <linux/blkdev.h>
269	], [
270		struct request_queue *q __attribute__ ((unused)) = NULL;
271		blk_queue_write_cache(q, true, true);
272	], [], [ZFS_META_LICENSE])
273])
274
275AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_FLUSH], [
276	AC_MSG_CHECKING([whether blk_queue_flush() is available])
277	ZFS_LINUX_TEST_RESULT([blk_queue_flush], [
278		AC_MSG_RESULT(yes)
279		AC_DEFINE(HAVE_BLK_QUEUE_FLUSH, 1,
280		    [blk_queue_flush() is available])
281
282		AC_MSG_CHECKING([whether blk_queue_flush() is GPL-only])
283		ZFS_LINUX_TEST_RESULT([blk_queue_flush_license], [
284			AC_MSG_RESULT(no)
285		],[
286			AC_MSG_RESULT(yes)
287			AC_DEFINE(HAVE_BLK_QUEUE_FLUSH_GPL_ONLY, 1,
288			    [blk_queue_flush() is GPL-only])
289		])
290	],[
291		AC_MSG_RESULT(no)
292	])
293
294	dnl #
295	dnl # 4.7 API change
296	dnl # Replace blk_queue_flush with blk_queue_write_cache
297	dnl #
298	AC_MSG_CHECKING([whether blk_queue_write_cache() exists])
299	ZFS_LINUX_TEST_RESULT([blk_queue_write_cache], [
300		AC_MSG_RESULT(yes)
301		AC_DEFINE(HAVE_BLK_QUEUE_WRITE_CACHE, 1,
302		    [blk_queue_write_cache() exists])
303
304		AC_MSG_CHECKING([whether blk_queue_write_cache() is GPL-only])
305		ZFS_LINUX_TEST_RESULT([blk_queue_write_cache_license], [
306			AC_MSG_RESULT(no)
307		],[
308			AC_MSG_RESULT(yes)
309			AC_DEFINE(HAVE_BLK_QUEUE_WRITE_CACHE_GPL_ONLY, 1,
310			    [blk_queue_write_cache() is GPL-only])
311		])
312	],[
313		AC_MSG_RESULT(no)
314	])
315])
316
317dnl #
318dnl # 2.6.34 API change
319dnl # blk_queue_max_hw_sectors() replaces blk_queue_max_sectors().
320dnl #
321AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE_MAX_HW_SECTORS], [
322	ZFS_LINUX_TEST_SRC([blk_queue_max_hw_sectors], [
323		#include <linux/blkdev.h>
324	], [
325		struct request_queue *q __attribute__ ((unused)) = NULL;
326		(void) blk_queue_max_hw_sectors(q, BLK_SAFE_MAX_SECTORS);
327	], [])
328])
329
330AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_MAX_HW_SECTORS], [
331	AC_MSG_CHECKING([whether blk_queue_max_hw_sectors() is available])
332	ZFS_LINUX_TEST_RESULT([blk_queue_max_hw_sectors], [
333		AC_MSG_RESULT(yes)
334	],[
335		ZFS_LINUX_TEST_ERROR([blk_queue_max_hw_sectors])
336	])
337])
338
339dnl #
340dnl # 2.6.34 API change
341dnl # blk_queue_max_segments() consolidates blk_queue_max_hw_segments()
342dnl # and blk_queue_max_phys_segments().
343dnl #
344AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE_MAX_SEGMENTS], [
345	ZFS_LINUX_TEST_SRC([blk_queue_max_segments], [
346		#include <linux/blkdev.h>
347	], [
348		struct request_queue *q __attribute__ ((unused)) = NULL;
349		(void) blk_queue_max_segments(q, BLK_MAX_SEGMENTS);
350	], [])
351])
352
353AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS], [
354	AC_MSG_CHECKING([whether blk_queue_max_segments() is available])
355	ZFS_LINUX_TEST_RESULT([blk_queue_max_segments], [
356		AC_MSG_RESULT(yes)
357	], [
358		ZFS_LINUX_TEST_ERROR([blk_queue_max_segments])
359	])
360])
361
362dnl #
363dnl # See if kernel supports block multi-queue and blk_status_t.
364dnl # blk_status_t represents the new status codes introduced in the 4.13
365dnl # kernel patch:
366dnl #
367dnl #  block: introduce new block status code type
368dnl #
369dnl # We do not currently support the "old" block multi-queue interfaces from
370dnl # prior kernels.
371dnl #
372AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_MQ], [
373	ZFS_LINUX_TEST_SRC([blk_mq], [
374		#include <linux/blk-mq.h>
375	], [
376		struct blk_mq_tag_set tag_set __attribute__ ((unused)) = {0};
377		(void) blk_mq_alloc_tag_set(&tag_set);
378		return BLK_STS_OK;
379	], [])
380	ZFS_LINUX_TEST_SRC([blk_mq_rq_hctx], [
381		#include <linux/blk-mq.h>
382		#include <linux/blkdev.h>
383	], [
384		struct request rq = {0};
385		struct blk_mq_hw_ctx *hctx = NULL;
386		rq.mq_hctx = hctx;
387	], [])
388])
389
390AC_DEFUN([ZFS_AC_KERNEL_BLK_MQ], [
391	AC_MSG_CHECKING([whether block multiqueue with blk_status_t is available])
392	ZFS_LINUX_TEST_RESULT([blk_mq], [
393		AC_MSG_RESULT(yes)
394		AC_DEFINE(HAVE_BLK_MQ, 1, [block multiqueue is available])
395		AC_MSG_CHECKING([whether block multiqueue hardware context is cached in struct request])
396		ZFS_LINUX_TEST_RESULT([blk_mq_rq_hctx], [
397			AC_MSG_RESULT(yes)
398			AC_DEFINE(HAVE_BLK_MQ_RQ_HCTX, 1, [block multiqueue hardware context is cached in struct request])
399		], [
400			AC_MSG_RESULT(no)
401		])
402	], [
403		AC_MSG_RESULT(no)
404	])
405])
406
407AC_DEFUN([ZFS_AC_KERNEL_SRC_BLK_QUEUE], [
408	ZFS_AC_KERNEL_SRC_BLK_QUEUE_PLUG
409	ZFS_AC_KERNEL_SRC_BLK_QUEUE_BDI
410	ZFS_AC_KERNEL_SRC_BLK_QUEUE_UPDATE_READAHEAD
411	ZFS_AC_KERNEL_SRC_BLK_QUEUE_DISCARD
412	ZFS_AC_KERNEL_SRC_BLK_QUEUE_SECURE_ERASE
413	ZFS_AC_KERNEL_SRC_BLK_QUEUE_FLAG_SET
414	ZFS_AC_KERNEL_SRC_BLK_QUEUE_FLAG_CLEAR
415	ZFS_AC_KERNEL_SRC_BLK_QUEUE_FLUSH
416	ZFS_AC_KERNEL_SRC_BLK_QUEUE_MAX_HW_SECTORS
417	ZFS_AC_KERNEL_SRC_BLK_QUEUE_MAX_SEGMENTS
418	ZFS_AC_KERNEL_SRC_BLK_MQ
419])
420
421AC_DEFUN([ZFS_AC_KERNEL_BLK_QUEUE], [
422	ZFS_AC_KERNEL_BLK_QUEUE_PLUG
423	ZFS_AC_KERNEL_BLK_QUEUE_BDI
424	ZFS_AC_KERNEL_BLK_QUEUE_UPDATE_READAHEAD
425	ZFS_AC_KERNEL_BLK_QUEUE_DISCARD
426	ZFS_AC_KERNEL_BLK_QUEUE_SECURE_ERASE
427	ZFS_AC_KERNEL_BLK_QUEUE_FLAG_SET
428	ZFS_AC_KERNEL_BLK_QUEUE_FLAG_CLEAR
429	ZFS_AC_KERNEL_BLK_QUEUE_FLUSH
430	ZFS_AC_KERNEL_BLK_QUEUE_MAX_HW_SECTORS
431	ZFS_AC_KERNEL_BLK_QUEUE_MAX_SEGMENTS
432	ZFS_AC_KERNEL_BLK_MQ
433])
434