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/Linux-v5.10/fs/
Dchar_dev.c14 #include <linux/major.h>
36 unsigned int major; member
44 static inline int major_to_index(unsigned major) in major_to_index() argument
46 return major % CHRDEV_MAJOR_HASH_SIZE; in major_to_index()
57 if (cd->major == offset) in chrdev_show()
58 seq_printf(f, "%3d %s\n", cd->major, cd->name); in chrdev_show()
78 if (cd->major == i) in find_dynamic_major()
89 * Register a single major with a specified minor range.
91 * If major == 0 this function will dynamically allocate an unused major.
92 * If major > 0 this function will attempt to reserve the range of minors
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/Linux-v5.10/arch/sparc/kernel/
Dhvapi.c16 * PRE_API flag set are major 1 minor 0.
20 unsigned long major; member
81 p->major = p->minor = 0; in __put_ref()
86 * API group and desired major+minor.
93 * API group/major/minor with the hypervisor, and errors returned
96 int sun4v_hvapi_register(unsigned long group, unsigned long major, in sun4v_hvapi_register() argument
109 if (p->major == major) { in sun4v_hvapi_register()
117 hv_ret = sun4v_set_version(group, major, *minor, in sun4v_hvapi_register()
122 p->major = major; in sun4v_hvapi_register()
128 if (major == 1) { in sun4v_hvapi_register()
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Dviohs.c48 static int send_version(struct vio_driver_state *vio, u16 major, u16 minor) in send_version() argument
56 pkt.major = major; in send_version()
61 major, minor, vio->dev_class); in send_version()
75 vio->ver_table[0].major, in start_handshake()
240 u16 major) in find_by_major() argument
247 if (v->major <= major) { in find_by_major()
262 pkt->major, pkt->minor, pkt->dev_class); in process_ver_info()
270 vap = find_by_major(vio, pkt->major); in process_ver_info()
276 pkt->major = 0; in process_ver_info()
280 } else if (vap->major != pkt->major) { in process_ver_info()
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/Linux-v5.10/include/linux/
Dkdev_t.h10 #define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS)) macro
15 sprintf((buffer), "%u:%u\n", MAJOR(dev), MINOR(dev))
19 sprintf(buffer, "%u:%u", MAJOR(dev), MINOR(dev)); \
26 return MAJOR(dev) < 256 && MINOR(dev) < 256; in old_valid_dev()
31 return (MAJOR(dev) << 8) | MINOR(dev); in old_encode_dev()
41 unsigned major = MAJOR(dev); in new_encode_dev() local
43 return (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12); in new_encode_dev()
48 unsigned major = (dev & 0xfff00) >> 8; in new_decode_dev() local
50 return MKDEV(major, minor); in new_decode_dev()
65 return MAJOR(dev) < (1<<14) && MINOR(dev) < (1<<18); in sysv_valid_dev()
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/Linux-v5.10/arch/mips/kernel/
Drtlx-cmp.c20 static int major; variable
64 major = register_chrdev(0, RTLX_MODULE_NAME, &rtlx_fops); in rtlx_module_init()
65 if (major < 0) { in rtlx_module_init()
67 return major; in rtlx_module_init()
77 dev = device_create(mt_class, NULL, MKDEV(major, i), NULL, in rtlx_module_init()
81 device_destroy(mt_class, MKDEV(major, i)); in rtlx_module_init()
105 device_destroy(mt_class, MKDEV(major, i)); in rtlx_module_init()
107 unregister_chrdev(major, RTLX_MODULE_NAME); in rtlx_module_init()
117 device_destroy(mt_class, MKDEV(major, i)); in rtlx_module_exit()
119 unregister_chrdev(major, RTLX_MODULE_NAME); in rtlx_module_exit()
Drtlx-mt.c21 static int major; variable
85 major = register_chrdev(0, RTLX_MODULE_NAME, &rtlx_fops); in rtlx_module_init()
86 if (major < 0) { in rtlx_module_init()
88 return major; in rtlx_module_init()
98 dev = device_create(mt_class, NULL, MKDEV(major, i), NULL, in rtlx_module_init()
102 device_destroy(mt_class, MKDEV(major, i)); in rtlx_module_init()
130 device_destroy(mt_class, MKDEV(major, i)); in rtlx_module_init()
132 unregister_chrdev(major, RTLX_MODULE_NAME); in rtlx_module_init()
142 device_destroy(mt_class, MKDEV(major, i)); in rtlx_module_exit()
144 unregister_chrdev(major, RTLX_MODULE_NAME); in rtlx_module_exit()
Dvpe-cmp.c17 static int major; variable
107 major = register_chrdev(0, VPE_MODULE_NAME, &vpe_fops); in vpe_module_init()
108 if (major < 0) { in vpe_module_init()
110 return major; in vpe_module_init()
123 vpe_device.devt = MKDEV(major, VPE_MODULE_MINOR); in vpe_module_init()
163 unregister_chrdev(major, VPE_MODULE_NAME); in vpe_module_init()
174 unregister_chrdev(major, VPE_MODULE_NAME); in vpe_module_exit()
/Linux-v5.10/drivers/char/
Dscx200_gpio.c33 static int major = 0; /* default to dynamic major */ variable
34 module_param(major, int, 0);
35 MODULE_PARM_DESC(major, "Major device number");
98 if (major) { in scx200_gpio_init()
99 devid = MKDEV(major, 0); in scx200_gpio_init()
103 major = MAJOR(devid); in scx200_gpio_init()
128 unregister_chrdev_region(MKDEV(major, 0), MAX_PINS); in scx200_gpio_cleanup()
Dpc8736x_gpio.c32 static int major; /* default to dynamic major */ variable
33 module_param(major, int, 0);
34 MODULE_PARM_DESC(major, "Major device number");
306 if (major) { in pc8736x_gpio_init()
307 devid = MKDEV(major, 0); in pc8736x_gpio_init()
311 major = MAJOR(devid); in pc8736x_gpio_init()
318 if (!major) { in pc8736x_gpio_init()
319 major = rc; in pc8736x_gpio_init()
320 dev_dbg(&pdev->dev, "got dynamic major %d\n", major); in pc8736x_gpio_init()
346 unregister_chrdev_region(MKDEV(major,0), PC8736X_GPIO_CT); in pc8736x_gpio_cleanup()
Dtb0219.c22 static int major; /* default is dynamic major device number */ variable
23 module_param(major, int, 0);
24 MODULE_PARM_DESC(major, "Major device number");
288 retval = register_chrdev(major, "TB0219", &tb0219_fops); in tb0219_probe()
301 if (major == 0) { in tb0219_probe()
302 major = retval; in tb0219_probe()
303 printk(KERN_INFO "TB0219: major number %d\n", major); in tb0219_probe()
/Linux-v5.10/drivers/staging/media/atomisp/pci/
Dcss_trace.h26 /* one tracer item: major, minor and counter. The counter value can be used for GP data */
28 u8 major; member
195 CMD_SET_ONE_MAJOR = 1, /* mask in one major. 2nd byte in the command is the major code */
196 CMD_UNSET_ONE_MAJOR = 2, /* mask out one major. 2nd byte in the command is the major code */
197 CMD_SET_ALL_MAJORS = 3, /* set the major print mask. the full mask is in the data DWORD */
238 * the last 2 MSB bits of the major field will indicates the format
266 #define PACK_TRACEPOINT(tid, major, minor, value) \ argument
267 (FIELD_TID_PACK(tid) | FIELD_MAJOR_PACK(major) | FIELD_MINOR_PACK(minor) | FIELD_VALUE_PACK(value))
269 #define PACK_QUICK_TRACEPOINT(major, minor) \ argument
270 (FIELD_FULL_MAJOR_PACK(major) | FIELD_MINOR_PACK(minor))
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/Linux-v5.10/security/
Ddevice_cgroup.c35 u32 major, minor; member
101 if (walk->major != ex->major) in dev_exception_add()
129 if (walk->major != ex->major) in dev_exception_rm()
291 set_majmin(maj, ex->major); in devcgroup_seq_show()
306 * @major: device file major number, ~0 to match all
316 u32 major, u32 minor, short access) in match_exception() argument
325 if (ex->major != ~0 && ex->major != major) in match_exception()
341 * @major: device file major number, ~0 to match all
353 u32 major, u32 minor, short access) in match_exception_partial() argument
367 if (ex->major != ~0 && major != ~0 && ex->major != major) in match_exception_partial()
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/Linux-v5.10/fs/f2fs/
Dtrace.c26 last_io.major, last_io.minor, in __print_last_io()
80 MAJOR(inode->i_sb->s_dev), MINOR(inode->i_sb->s_dev), in f2fs_trace_pid()
91 int major, minor; in f2fs_trace_ios() local
101 major = MAJOR(inode->i_sb->s_dev); in f2fs_trace_ios()
104 if (last_io.major == major && last_io.minor == minor && in f2fs_trace_ios()
117 last_io.major = major; in f2fs_trace_ios()
/Linux-v5.10/include/trace/events/
Dext4.h134 MAJOR(__entry->dev), MINOR(__entry->dev),
164 MAJOR(__entry->dev), MINOR(__entry->dev),
187 MAJOR(__entry->dev), MINOR(__entry->dev),
211 MAJOR(__entry->dev), MINOR(__entry->dev),
234 MAJOR(__entry->dev), MINOR(__entry->dev),
256 MAJOR(__entry->dev), MINOR(__entry->dev),
276 MAJOR(__entry->dev), MINOR(__entry->dev),
298 MAJOR(__entry->dev), MINOR(__entry->dev),
320 MAJOR(__entry->dev), MINOR(__entry->dev),
349 MAJOR(__entry->dev), MINOR(__entry->dev),
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Djbd2.h31 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->result)
53 MAJOR(__entry->dev), MINOR(__entry->dev),
112 MAJOR(__entry->dev), MINOR(__entry->dev),
132 MAJOR(__entry->dev), MINOR(__entry->dev),
160 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->tid,
205 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->tid,
242 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->tid,
285 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->tid,
322 MAJOR(__entry->dev), MINOR(__entry->dev), __entry->tid,
351 MAJOR(__entry->dev), MINOR(__entry->dev),
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/Linux-v5.10/Documentation/admin-guide/cgroup-v1/
Dblkio-controller.rst35 for policy is "<major>:<minor> <bytes_per_second>"::
40 on device having major/minor number 8:16.
135 two fields specify the major and minor number of the device and
141 two fields specify the major and minor number of the device and
148 or async. First two fields specify the major and minor number of the
155 or async. First two fields specify the major and minor number of the
169 specify the major and minor number of the device, third field
184 read or write, sync or async. First two fields specify the major and
236 from service tree of the device. First two fields specify the major
252 echo "<major>:<minor> <rate_bytes_per_second>" > /cgrp/blkio.throttle.read_bps_device
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/Linux-v5.10/drivers/cpufreq/
Dsti-cpufreq.c65 dev_err(dev, "No major number offset provided in %pOF [%d]\n", in sti_cpufreq_fetch_major()
72 dev_err(dev, "Failed to read major number from syscon [%d]\n", in sti_cpufreq_fetch_major()
158 int pcode, substrate, major, minor; in sti_cpufreq_set_opp_info() local
197 major = sti_cpufreq_fetch_major(); in sti_cpufreq_set_opp_info()
198 if (major < 0) { in sti_cpufreq_set_opp_info()
199 dev_err(dev, "Failed to obtain major version\n"); in sti_cpufreq_set_opp_info()
200 /* Use default major number */ in sti_cpufreq_set_opp_info()
201 major = DEFAULT_VERSION; in sti_cpufreq_set_opp_info()
219 version[0] = BIT(major); in sti_cpufreq_set_opp_info()
229 dev_dbg(dev, "pcode: %d major: %d minor: %d substrate: %d\n", in sti_cpufreq_set_opp_info()
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/Linux-v5.10/Documentation/ABI/stable/
Dsysfs-hypervisor-xen34 is in the format: <class>-<major>.<minor>-<arch>
40 <major>: major guest interface version
103 The Xen version is in the format <major>.<minor><extra>
108 What: /sys/hypervisor/version/major
113 The Xen version is in the format <major>.<minor><extra>
114 This is the <major> part of it.
121 The Xen version is in the format <major>.<minor><extra>
/Linux-v5.10/fs/pstore/
Dblk.c79 * 7) <major>:<minor> major and minor number of the device separated by
382 MAJOR(binfo.devt) != info->major)) { in __register_pstore_blk()
383 pr_debug("invalid major %u (expect %u)\n", in __register_pstore_blk()
384 info->major, MAJOR(binfo.devt)); in __register_pstore_blk()
443 static void __unregister_pstore_blk(unsigned int major) in __unregister_pstore_blk() argument
449 if (psblk_bdev && MAJOR(psblk_bdev->bd_dev) == major) { in __unregister_pstore_blk()
460 * @major: the major device number of device
462 void unregister_pstore_blk(unsigned int major) in unregister_pstore_blk() argument
465 __unregister_pstore_blk(major); in unregister_pstore_blk()
502 __unregister_pstore_blk(MAJOR(psblk_bdev->bd_dev)); in pstore_blk_exit()
/Linux-v5.10/include/uapi/sound/sof/
Dabi.h11 * MAJOR.MINOR.PATCH version number. See https://semver.org/
15 * 1) Increment MAJOR version if you make incompatible API changes. MINOR and
27 /* SOF ABI version major, minor and patch numbers */
40 #define SOF_ABI_VER(major, minor, patch) \ argument
41 (((major) << SOF_ABI_MAJOR_SHIFT) | \
/Linux-v5.10/block/
Dgenhd.c32 /* for extended dynamic devt allocation, currently only one major is used */
394 int major; member
399 static inline int major_to_index(unsigned major) in major_to_index() argument
401 return major % BLKDEV_MAJOR_HASH_SIZE; in major_to_index()
411 if (dp->major == offset) in blkdev_show()
412 seq_printf(seqf, "%3d %s\n", dp->major, dp->name); in blkdev_show()
420 * @major: the requested major device number [1..BLKDEV_MAJOR_MAX-1]. If
421 * @major = 0, try to allocate any unused major number.
426 * The return value depends on the @major input parameter:
428 * - if a major device number was requested in range [1..BLKDEV_MAJOR_MAX-1]
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/Linux-v5.10/fs/xfs/
Dxfs_trace.h76 MAJOR(__entry->dev), MINOR(__entry->dev),
123 MAJOR(__entry->dev), MINOR(__entry->dev),
156 MAJOR(__entry->dev), MINOR(__entry->dev),
205 MAJOR(__entry->dev), MINOR(__entry->dev),
256 MAJOR(__entry->dev), MINOR(__entry->dev),
308 MAJOR(__entry->dev), MINOR(__entry->dev),
376 MAJOR(__entry->dev), MINOR(__entry->dev),
421 MAJOR(__entry->dev), MINOR(__entry->dev),
464 MAJOR(__entry->dev), MINOR(__entry->dev),
522 MAJOR(__entry->dev), MINOR(__entry->dev),
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/Linux-v5.10/sound/core/
Dsound.c20 static int major = CONFIG_SND_MAJOR; variable
29 module_param(major, int, 0444);
30 MODULE_PARM_DESC(major, "Major # for sound driver.");
274 device->devt = MKDEV(major, minor); in snd_register_device()
388 snd_major = major; in alsa_sound_init()
390 if (register_chrdev(major, "alsa", &snd_fops)) { in alsa_sound_init()
391 pr_err("ALSA core: unable to register native major device number %d\n", major); in alsa_sound_init()
395 unregister_chrdev(major, "alsa"); in alsa_sound_init()
407 unregister_chrdev(major, "alsa"); in alsa_sound_exit()
/Linux-v5.10/security/keys/encrypted-keys/
Decryptfs_format.c31 void ecryptfs_get_versions(int *major, int *minor, int *file_version) in ecryptfs_get_versions() argument
33 *major = ECRYPTFS_VERSION_MAJOR; in ecryptfs_get_versions()
51 int major, minor; in ecryptfs_fill_auth_tok() local
53 ecryptfs_get_versions(&major, &minor, NULL); in ecryptfs_fill_auth_tok()
54 auth_tok->version = (((uint16_t)(major << 8) & 0xFF00) in ecryptfs_fill_auth_tok()
/Linux-v5.10/Documentation/admin-guide/
Ddevices.txt3 See block major 144, 145, 146 for expansion areas.
45 devices are on major 128 and above and use the PTY
113 devices are on major 136 and above.
143 Older versions of the Linux kernel used this major
145 is no longer supported. Use major numbers 2 and 3.
147 4 block Aliases for dynamically allocated major devices to be used
208 disks (see major number 3) except that the limit on
520 (see major number 3).
531 interface (see major number 3).
639 disks (see major number 3) except that the limit on
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