| /kernel/linux/linux-5.10/arch/sparc/include/asm/ |
| D | fbio.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
43 #define CG14_XLUT 0x3000 /* X Look Up Table -- ??? */
44 #define CG14_CLUT1 0x4000 /* Color Look Up Table */
45 #define CG14_CLUT2 0x5000 /* Color Look Up Table */
46 #define CG14_CLUT3 0x6000 /* Color Look Up Table */
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| /kernel/linux/linux-5.10/Documentation/staging/ |
| D | crc32.rst | 5 A CRC is a long-division remainder. You add the CRC to the message,
11 protocols put the end-of-frame flag after the CRC.
15 - We're working in binary, so the digits are only 0 and 1, and
16 - When dividing polynomials, there are no carries. Rather than add and
21 To produce a 32-bit CRC, the divisor is actually a 33-bit CRC polynomial.
24 familiar with the IEEE 754 floating-point format, it's the same idea.)
28 the best error-detecting properties, this should correspond to the
29 order they're actually sent. For example, standard RS-232 serial is
30 little-endian; the most significant bit (sometimes used for parity)
38 back into range. In binary, this is easy - it has to be either 0 or 1,
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| /kernel/linux/linux-5.10/Documentation/filesystems/ |
| D | files.rst | 1 .. SPDX-License-Identifier: GPL-2.0
10 Up until 2.6.12, the file descriptor table has been protected
11 with a lock (files->file_lock) and reference count (files->count).
12 ->file_lock protected accesses to all the file related fields
13 of the table. ->count was used for sharing the file descriptor
19 reference count (->f_count).
21 In the new lock-free model of file descriptor management,
24 elements - the fd sets (open_fds and close_on_exec, the
27 a lock-free reader, all the elements of the file descriptor
28 table are in a separate structure - struct fdtable.
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| D | path-lookup.txt | 17 thus in every component during path look-up. Since 2.5.10 onwards, fast-walk
23 make dcache look-up lock-free.
26 dentry that was looked up, so that may be used as the basis for walking the
30 are path-walk intensive tend to do path lookups starting from a common dentry
35 (including dcache look-up) completely "store-free" (so, no locks, atomics, or
36 even stores into cachelines of common dentries). This is known as "rcu-walk"
42 A name string specifies a start (root directory, cwd, fd-relative) and a
45 elements are sub-strings, separated by '/'.
49 the path given by the name's starting point (which we know in advance -- eg.
50 current->fs->cwd or current->fs->root) as the first parent of the lookup. Then
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| /kernel/linux/linux-5.10/arch/arm64/include/asm/ |
| D | smp_plat.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
30 * - mpidr: MPIDR.Aff* bits to be used for the look-up
32 * Returns the cpu logical index or -EINVAL on look-up error
40 return -EINVAL; in get_logical_index()
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| /kernel/linux/linux-5.10/drivers/bus/ |
| D | arm-cci.c | 17 #include <linux/arm-cci.h>
49 {.compatible = "arm,cci-400", .data = CCI400_PORTS_DATA },
52 { .compatible = "arm,cci-500", },
53 { .compatible = "arm,cci-550", },
59 OF_DEV_AUXDATA("arm,cci-400-pmu", 0, NULL, &cci_ctrl_base),
60 OF_DEV_AUXDATA("arm,cci-400-pmu,r0", 0, NULL, &cci_ctrl_base),
61 OF_DEV_AUXDATA("arm,cci-400-pmu,r1", 0, NULL, &cci_ctrl_base),
62 OF_DEV_AUXDATA("arm,cci-500-pmu,r0", 0, NULL, &cci_ctrl_base),
63 OF_DEV_AUXDATA("arm,cci-550-pmu,r0", 0, NULL, &cci_ctrl_base),
67 #define DRIVER_NAME "ARM-CCI"
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| /kernel/linux/linux-5.10/sound/core/ |
| D | misc.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
76 memcpy(verbose_fmt, vaf.fmt, end_of_header - vaf.fmt); in __snd_printk()
84 memcpy(verbose_fmt, KERN_DEBUG, sizeof(KERN_DEBUG) - 1); in __snd_printk()
98 * snd_pci_quirk_lookup_id - look up a PCI SSID quirk list
103 * Look through the given quirk list and finds a matching entry
115 for (q = list; q->subvendor; q++) { in snd_pci_quirk_lookup_id()
116 if (q->subvendor != vendor) in snd_pci_quirk_lookup_id()
118 if (!q->subdevice || in snd_pci_quirk_lookup_id()
119 (device & q->subdevice_mask) == q->subdevice) in snd_pci_quirk_lookup_id()
127 * snd_pci_quirk_lookup - look up a PCI SSID quirk list
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/display/ |
| D | renesas,cmm.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Renesas R-Car Color Management Module (CMM)
10 - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
11 - Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
12 - Jacopo Mondi <jacopo+renesas@jmondi.org>
15 Renesas R-Car color management module connected to R-Car DU video channels.
16 It provides image enhancement functions such as 1-D look-up tables (LUT),
17 3-D look-up tables (CLU), 1D-histogram generation (HGO), and color
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| /kernel/linux/linux-5.10/Documentation/networking/ |
| D | fib_trie.rst | 1 .. SPDX-License-Identifier: GPL-2.0
4 LC-trie implementation notes
8 ----------
19 ------------------------
22 child array - the "child index". See Level Compression.
41 children of a full child (see "full_children") up one level, so that
46 in order to avoid ever-increasing child arrays.
61 ---------
64 possible to allow verification and help up reviewing.
76 Looks up a key, deletes it and runs the level compression algorithm.
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| /kernel/linux/linux-5.10/arch/arm/include/asm/ |
| D | smp_plat.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
31 * smp_cpuid_part() - return part id for a given cpu
40 return is_smp() ? cpu_info->cpuid & ARM_CPU_PART_MASK : in smp_cpuid_part()
76 * - mpidr: MPIDR[23:0] to be used for the look-up
78 * Returns the cpu logical index or -EINVAL on look-up error
86 return -EINVAL; in get_logical_index()
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| /kernel/linux/linux-5.10/fs/afs/ |
| D | volume.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
25 write_seqlock(&cell->volume_lock); in afs_insert_volume_into_cell()
27 pp = &cell->volumes.rb_node; in afs_insert_volume_into_cell()
31 if (p->vid < volume->vid) { in afs_insert_volume_into_cell()
32 pp = &(*pp)->rb_left; in afs_insert_volume_into_cell()
33 } else if (p->vid > volume->vid) { in afs_insert_volume_into_cell()
34 pp = &(*pp)->rb_right; in afs_insert_volume_into_cell()
41 rb_link_node_rcu(&volume->cell_node, parent, pp); in afs_insert_volume_into_cell()
42 rb_insert_color(&volume->cell_node, &cell->volumes); in afs_insert_volume_into_cell()
43 hlist_add_head_rcu(&volume->proc_link, &cell->proc_volumes); in afs_insert_volume_into_cell()
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| /kernel/linux/linux-5.10/arch/m68k/include/asm/ |
| D | fbio.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
12 #define FBTYPE_NOTYPE -1
83 int emu_type; /* -1 if none */
258 #define CG14_XLUT 0x3000 /* X Look Up Table -- ??? */
259 #define CG14_CLUT1 0x4000 /* Color Look Up Table */
260 #define CG14_CLUT2 0x5000 /* Color Look Up Table */
261 #define CG14_CLUT3 0x6000 /* Color Look Up Table */
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| /kernel/linux/linux-5.10/samples/ftrace/ |
| D | sample-trace-array.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
7 * The define_trace.h below will also look for a file name of
9 * In this case, it would look for sample-trace.h
13 * define_trace.h will look up by defining TRACE_INCLUDE_FILE
15 * This file is called sample-trace-array.h but we want the system
16 * to be called "sample-subsystem". Therefore we must define the name of this
19 * #define TRACE_INCLUDE_FILE sample-trace-array
27 #define TRACE_SYSTEM sample-subsystem
30 * TRACE_SYSTEM is expected to be a C valid variable (alpha-numeric
38 * But the above is only needed if TRACE_SYSTEM is not alpha-numeric
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/clock/ |
| D | nvidia,tegra124-dfll.txt | 4 Documentation/devicetree/bindings/clock/clock-bindings.txt
7 the fast CPU cluster. It consists of a free-running voltage controlled
10 communicating with an off-chip PMIC either via an I2C bus or via PWM signals.
13 - compatible : should be one of:
14 - "nvidia,tegra124-dfll": for Tegra124
15 - "nvidia,tegra210-dfll": for Tegra210
16 - reg : Defines the following set of registers, in the order listed:
17 - registers for the DFLL control logic.
18 - registers for the I2C output logic.
19 - registers for the integrated I2C master controller.
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| /kernel/linux/linux-5.10/drivers/cpufreq/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
16 For details, take a look at <file:Documentation/cpu-freq>.
80 loading your cpufreq low-level hardware driver.
82 governor. If unsure have a look at the help section of the
93 loading your cpufreq low-level hardware driver.
95 governor. If unsure have a look at the help section of the
105 have a look at the help section of that governor. The fallback
143 For details, take a look at <file:Documentation/cpu-freq/>.
151 'ondemand' - This driver adds a dynamic cpufreq policy governor.
161 For details, take a look at linux/Documentation/cpu-freq.
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| /kernel/linux/linux-5.10/drivers/usb/core/ |
| D | of.c | 1 // SPDX-License-Identifier: GPL-2.0
15 * usb_of_get_device_node() - get a USB device node
17 * @port1: one-based index of port
19 * Look up the node of a USB device given its parent hub device and one-based
30 for_each_child_of_node(hub->dev.of_node, node) { in usb_of_get_device_node()
43 * usb_of_has_combined_node() - determine whether a device has a combined node
59 struct usb_device_descriptor *ddesc = &udev->descriptor; in usb_of_has_combined_node()
62 if (!udev->dev.of_node) in usb_of_has_combined_node()
65 switch (ddesc->bDeviceClass) { in usb_of_has_combined_node()
68 if (ddesc->bNumConfigurations == 1) { in usb_of_has_combined_node()
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| /kernel/linux/linux-5.10/fs/xfs/scrub/ |
| D | parent.c | 1 // SPDX-License-Identifier: GPL-2.0+
20 /* Set us up to scrub parents. */
31 /* Look for an entry in a parent pointing to this inode. */
41 /* Look for a single entry in a directory pointing to an inode. */
55 if (spc->ino == ino) in xchk_parent_actor()
56 spc->nlink++; in xchk_parent_actor()
63 if (xchk_should_terminate(spc->sc, &error)) in xchk_parent_actor()
64 spc->cancelled = true; in xchk_parent_actor()
78 .ino = sc->ip->i_ino, in xchk_parent_count_parent_dentries()
87 * If there are any blocks, read-ahead block 0 as we're almost in xchk_parent_count_parent_dentries()
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| /kernel/linux/linux-5.10/drivers/char/ |
| D | dtlk.c | 1 // SPDX-License-Identifier: GPL-2.0-only
2 /* -*- linux-c -*-
3 * dtlk.c - DoubleTalk PC driver for Linux
8 * 2000-03-18 Jim Van Zandt: Fix polling.
20 The DoubleTalk PC contains four voice synthesizers: text-to-speech
40 This driver was written for use with the text-to-speech
57 #include <linux/errno.h> /* for -EBUSY */
134 /* printk("DoubleTalk PC - dtlk_read()\n"); */ in dtlk_read()
137 return -EINVAL; in dtlk_read()
144 return -EFAULT; in dtlk_read()
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| /kernel/linux/linux-5.10/drivers/media/usb/dvb-usb/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
10 Almost every USB device needs a firmware, please look into
11 <file:Documentation/driver-api/media/drivers/dvb-usb.rst>.
19 bool "Enable extended debug support for all DVB-USB devices"
22 Say Y if you want to enable debugging. See modinfo dvb-usb (and the
32 in case DVB_USB is built-in and DVB_DIB3000MC is a module,
36 tristate "AVerMedia AverTV DVB-T USB 2.0 (A800)"
42 Say Y here to support the AVerMedia AverTV DVB-T USB 2.0 (A800) receiver.
45 tristate "DiBcom USB DVB-T devices (based on the DiB3000M-B) (see help for device list)"
52 Support for USB 1.1 and 2.0 DVB-T receivers based on reference designs made by
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| /kernel/linux/linux-5.10/Documentation/networking/caif/ |
| D | caif.rst | 1 .. SPDX-License-Identifier: GPL-2.0
10 :Copyright: |copy| ST-Ericsson AB 2010
32 set up to talk to the modem.
38 The benefit is that we can hook up to any TTY.
40 The use of Start-of-frame-extension (STX) must also be set as
49 $ ifconfig caif_ttyS0 up
59 /sys/kernel/debug/caif_serial/<tty-name>/
61 * ser_state: Prints the bit-mask status where
63 - 0x02 means SENDING, this is a transient state.
64 - 0x10 means FLOW_OFF_SENT, i.e. the previous frame has not been sent
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| /kernel/linux/linux-5.10/fs/squashfs/ |
| D | id.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Squashfs - a compressed read only filesystem for Linux
15 * converted to 32-bit uids/gids using an id look up table. This table is
30 * Map uid/gid index into real 32-bit uid/gid using the id look up table
35 struct squashfs_sb_info *msblk = sb->s_fs_info; in squashfs_get_id()
42 if (index >= msblk->ids) in squashfs_get_id()
43 return -EINVAL; in squashfs_get_id()
45 start_block = le64_to_cpu(msblk->id_table[block]); in squashfs_get_id()
75 return ERR_PTR(-EINVAL); in squashfs_read_id_index_table()
81 if (length != (next_table - id_table_start)) in squashfs_read_id_index_table()
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| /kernel/linux/linux-5.10/net/batman-adv/ |
| D | send.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright (C) 2007-2020 B.A.T.M.A.N. contributors:
66 * batadv_send_skb_via_tt() - send an skb via TT lookup
72 * Look up the recipient node for the destination address in the ethernet
73 * header via the translation table. Wrap the given skb into a batman-adv
87 * batadv_send_skb_via_tt_4addr() - send an skb via TT lookup
94 * Look up the recipient node for the destination address in the ethernet
95 * header via the translation table. Wrap the given skb into a batman-adv
96 * unicast-4addr header. Then send this frame to the according destination
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| /kernel/linux/linux-5.10/Documentation/process/ |
| D | botching-up-ioctls.rst | 2 (How to avoid) Botching up ioctls
5 From: https://blog.ffwll.ch/2013/11/botching-up-ioctls.html
10 trying to come up with a unified interface to manage the execution units and
13 Which is nice, since there's no more insanity in the form of fake-generic, but
15 more potential to screw things up.
17 To avoid repeating all the same mistakes again I've written up some of the
19 only cover technicalities and not the big-picture issues like what the command
20 submission ioctl exactly should look like. Learning these lessons is probably
25 -------------
28 will need to add a 32-bit compat layer:
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| /kernel/linux/linux-5.10/Documentation/doc-guide/ |
| D | contributing.rst | 1 .. SPDX-License-Identifier: GPL-2.0
6 Documentation is an important part of any software-development project.
8 developers work more effectively. Without top-quality documentation, a lot
9 of time is wasted in reverse-engineering the code and making avoidable
23 ---------------------------
36 ones. For this reason, eliminating warnings is one of the highest-priority
42 positives, leading to patches aimed at simply shutting the compiler up.
59 - Resource-managed devfreq_register_notifier()
61 - Resource-managed devfreq_unregister_notifier()
65 A quick look at the source file named above turned up a couple of kerneldoc
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| /kernel/linux/linux-5.10/include/linux/ |
| D | btree.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
11 * A B+Tree is a data structure for looking up arbitrary (currently allowing
13 * is described at https://en.wikipedia.org/wiki/B-tree, we currently do not
18 * and pointers to sub-nodes, or, for leaf nodes, the keys and values for the
24 * Each key here is an array of unsigned longs, geo->no_longs in total. The
25 * number of keys and values (N) is geo->no_pairs.
29 * struct btree_head - btree head
45 * btree_alloc - allocate function for the mempool
52 * btree_free - free function for the mempool
59 * btree_init_mempool - initialise a btree with given mempool
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