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/linux/Documentation/hwmon/
H A Dds1621.rst47 - Christian W. Zuckschwerdt <zany@triq.net>
48 - valuable contributions by Jan M. Sendler <sendler@sendler.de>
49 - ported to 2.6 by Aurelien Jarno <aurelien@aurel32.net>
53 ------------------
58 * 0 = active high,
59 * 1 = active low
62 -----------
66 programmed into non-volatile on-chip registers). Temperature range is -55
68 Fahrenheit range of -67 to +257 degrees with 0.9 steps. If polarity
75 ("cooler"), vice versa. That way "heater" equals "active low", whereas
[all …]
/linux/drivers/pps/clients/
H A Dpps-gpio.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * pps-gpio.c -- PPS client driver using GPIO
9 #define PPS_GPIO_NAME "pps-gpio"
33 struct timer_list echo_timer; /* timer to reset echo active state */
36 unsigned int echo_active_ms; /* PPS echo active duration */
56 rising_edge = info->capture_clear ? in pps_gpio_irq_handler()
57 gpiod_get_value(info->gpio_pin) : !info->assert_falling_edge; in pps_gpio_irq_handler()
58 if ((rising_edge && !info->assert_falling_edge) || in pps_gpio_irq_handler()
59 (!rising_edge && info->assert_falling_edge)) in pps_gpio_irq_handler()
60 pps_event(info->pps, &ts, PPS_CAPTUREASSERT, data); in pps_gpio_irq_handler()
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/linux/tools/testing/selftests/drivers/net/mlxsw/
H A Ddevlink_linecard.sh2 # SPDX-License-Identifier: GPL-2.0
5 # LC_SLOT - If not set, all probed line cards are going to be tested,
28 echo "$current"
41 devlink lc show $DEVLINK_DEV lc $lc -j | jq -e -r ".[][][].state"
48 local timeout=$3 # ms
57 local timeout=$3 # ms
67 echo "$current"
75 devlink port -j | jq -e -r ".[][] | select(.lc==$lc) | .port" | wc -l
82 local timeout=$3 # ms
91 devlink lc show $DEVLINK_DEV lc $lc -j | jq -e -r ".[][][].nested_devlink"
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/linux/Documentation/core-api/irq/
H A Dirq-affinity.rst6 - Started by Ingo Molnar <mingo@redhat.com>
7 - Update by Max Krasnyansky <maxk@qualcomm.com>
17 to all non-active IRQs. Once IRQ is allocated/activated its affinity bitmask
21 Here is an example of restricting IRQ44 (eth1) to CPU0-3 then restricting
22 it to CPU4-7 (this is an 8-CPU SMP box)::
28 [root@moon 44]# echo 0f > smp_affinity
31 [root@moon 44]# ping -f h
34 --- hell ping statistics ---
36 round-trip min/avg/max = 0.1/0.1/0.4 ms
39 … 1785 1785 1783 0 0 0 0 IO-APIC-level eth1
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/linux/Documentation/devicetree/bindings/leds/
H A Dleds-trigger-pattern.txt3 The pattern is given by a series of tuples, of brightness and duration (ms).
6 new value, and writing malformed pattern deactivates any active one.
9 the tuple with duration less than dimming interval (50ms) is treated as a step
17 echo 0 1000 255 2000 > pattern
19 It will make the LED go gradually from zero-intensity to max (255) intensity in
24 255-| / \ / \ /
28 0-| / \/ \/
29 +---0----1----2----3----4----5----6------------> time (s)
32 use zero-time lengths (the brightness must be same as the previous tuple's). So
37 echo 0 1000 0 0 255 2000 255 0 > pattern
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/linux/Documentation/admin-guide/mm/damon/
H A Dlru_sort.rst1 .. SPDX-License-Identifier: GPL-2.0
4 DAMON-based LRU-lists Sorting
7 DAMON-based LRU-lists Sorting (DAMON_LRU_SORT) is a static kernel module that
9 (de)prioritization of pages on their LRU-lists for making LRU-lists a more
12 Where Proactive LRU-lists Sorting is Required?
15 As page-granularity access checking overhead could be significant on huge
23 Because DAMON can identify access patterns of best-effort accuracy while
24 inducing only user-specified range of overhead, proactively running
32 rates that higher than a user-specified threshold) and cold pages (pages of
34 user-specified threshold) using DAMON, and prioritizes hot pages while
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H A Dreclaim.rst1 .. SPDX-License-Identifier: GPL-2.0
4 DAMON-based Reclamation
7 DAMON-based Reclamation (DAMON_RECLAIM) is a static kernel module that aimed to
9 It doesn't aim to replace the LRU-list based page_granularity reclamation, but
15 On general memory over-committed systems, proactively reclaiming cold pages
20 Free Pages Reporting [3]_ based memory over-commit virtualization systems are
24 guests could be not so memory-frugal, mainly because some kernel subsystems and
25 user-space applications are designed to use as much memory as available. Then,
54 -------
60 no real monitoring and reclamation due to the watermarks-based activation
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/linux/drivers/net/wireless/marvell/libertas/
H A DREADME4 (c) Copyright © 2003-2006, Marvell International Ltd.
14 THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
35 Use the -i option to retrieve version information from the driver.
37 # ethtool -i eth0
39 version: COMM-USB8388-318.p4
40 firmware-version: 5.110.7
41 bus-info:
43 Use the -e option to read the EEPROM contents of the card.
46 ethtool -e ethX [raw on|off] [offset N] [length N]
48 -e retrieves and prints an EEPROM dump for the specified ethernet
[all …]
/linux/Documentation/admin-guide/mm/
H A Dmultigen_lru.rst1 .. SPDX-License-Identifier: GPL-2.0
4 Multi-Gen LRU
6 The multi-gen LRU is an alternative LRU implementation that optimizes
26 -----------
38 0x0001 The main switch for the multi-gen LRU.
42 disabled, the multi-gen LRU will suffer a minor performance
46 0x0004 Clearing the accessed bit in non-leaf page table entries as
49 disabled, the multi-gen LRU will suffer a negligible
57 echo y >/sys/kernel/mm/lru_gen/enabled
60 echo 5 >/sys/kernel/mm/lru_gen/enabled
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/linux/Documentation/ABI/testing/
H A Dsysfs-bus-usb10 This allows to avoid side-effects with drivers
28 drivers, non-authorized one are not. By default, wired
33 Contact: linux-usb@vger.kernel.org
48 # echo "8086 10f5" > /sys/bus/usb/drivers/foo/new_id
53 # echo "0458 7045 0 0458 704c" > /sys/bus/usb/drivers/foo/new_id
67 What: /sys/bus/usb-serial/drivers/.../new_id
69 Contact: linux-usb@vger.kernel.org
72 extra bus folder "usb-serial" in sysfs; apart from that
87 # echo "046d c315" > /sys/bus/usb/drivers/foo/remove_id
97 If CONFIG_PM is set and a USB 2.0 lpm-capable device is plugged
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/linux/Documentation/networking/
H A Dcan.rst2 SocketCAN - Controller Area Network
20 .. _socketcan-motivation:
29 functionality. Usually, there is only a hardware-specific device
32 Queueing of frames and higher-level transport protocols like ISO-TP
34 character-device implementations support only one single process to
47 protocol family module and also vice-versa. Also, the protocol family
57 communicate using a specific transport protocol, e.g. ISO-TP, just
60 CAN-IDs, frames, etc.
62 Similar functionality visible from user-space could be provided by a
74 * **Abstraction:** In most existing character-device implementations, the
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H A Dj1939.rst1 .. SPDX-License-Identifier: (GPL-2.0 OR MIT)
14 ISO-11783 (ISOBUS). This last one specifies the so-called ETP (Extended
16 results in a maximum packet size of ((2 ^ 24) - 1) * 7 bytes == 111 MiB.
19 -------------------
21 * SAE J1939-21 : data link layer
22 * SAE J1939-81 : network management
23 * ISO 11783-6 : Virtual Terminal (Extended Transport Protocol)
25 .. _j1939-motivation:
56 ...). In-kernel code for these would not contribute to protocol stability.
61 Since such a library does not communicate with the in-kernel implementation, care
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/linux/drivers/nfc/st95hf/
H A Dcore.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * --------------------------------------------------------------------
5 * --------------------------------------------------------------------
100 * List of top-level cmds to be used internally by the driver.
250 struct device *dev = &st95context->spicontext.spidev->dev; in st95hf_send_recv_cmd()
253 return -EINVAL; in st95hf_send_recv_cmd()
255 return -EINVAL; in st95hf_send_recv_cmd()
257 return -EINVAL; in st95hf_send_recv_cmd()
268 return -EINVAL; in st95hf_send_recv_cmd()
273 ret = st95hf_spi_send(&st95context->spicontext, in st95hf_send_recv_cmd()
[all …]
/linux/Documentation/admin-guide/pm/
H A Dintel_pstate.rst1 .. SPDX-License-Identifier: GPL-2.0
22 Documentation/admin-guide/pm/cpufreq.rst if you have not done that yet.]
24 For the processors supported by ``intel_pstate``, the P-state concept is broader
27 information about that). For this reason, the representation of P-states used
32 ``intel_pstate`` maps its internal representation of P-states to frequencies too
38 Since the hardware P-state selection interface used by ``intel_pstate`` is
43 time the corresponding CPU is taken offline and need to be re-initialized when
47 only way to pass early-configuration-time parameters to it is via the kernel
57 ``intel_pstate`` can operate in two different modes, active or passive. In the
58 active mode, it uses its own internal performance scaling governor algorithm or
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/linux/drivers/isdn/mISDN/
H A Ddsp_core.c12 * Real-time tone generation
14 * Real-time cross-connection and conferrence
23 * The dsp module provides layer 2 for b-channels (64kbit). It provides
26 * - (1) generation of tones
27 * - (2) detection of dtmf tones
28 * - (3) crossconnecting and conferences (clocking)
29 * - (4) echo generation for delay test
30 * - (5) volume control
31 * - (6) disable receive data
32 * - (7) pipeline
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/linux/Documentation/networking/device_drivers/hamradio/
H A Dz8530drv.rst1 .. SPDX-License-Identifier: GPL-2.0
5 SCC.C - Linux driver for Z8530 based HDLC cards for AX.25
14 1. ftp://ftp.ccac.rwth-aachen.de/pub/jr/z8530drv-utils_3.0-3.tar.gz
16 2. ftp://ftp.pspt.fi/pub/ham/linux/ax25/z8530drv-utils_3.0-3.tar.gz
41 AX.25-HOWTO on how to emulate a KISS TNC on network device drivers.
54 please read 'man insmod' that comes with module-init-tools.
64 of your rc.*-files. This has to be done BEFORE you can
92 - this is just a delimiter to make sccinit a bit simpler to
96 - the address of the data port A of this Z8530 (needed)
98 - the address of the control port A (needed)
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/linux/Documentation/core-api/
H A Dworkqueue.rst33 thread system-wide. A single MT wq needed to keep around the same
60 * Use per-CPU unified worker pools shared by all wq to provide
85 worker-pools.
87 The cmwq design differentiates between the user-facing workqueues that
89 which manages worker-pools and processes the queued work items.
91 There are two worker-pools, one for normal work items and the other
93 worker-pools to serve work items queued on unbound workqueues - the
98 Each per-CPU BH worker pool contains only one pseudo worker which represents
110 When a work item is queued to a workqueue, the target worker-pool is
112 and appended on the shared worklist of the worker-pool. For example,
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/linux/include/linux/
H A Dtcp.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
31 return th->doff * 4; in __tcp_hdrlen()
46 return inner_tcp_hdr(skb)->doff * 4; in inner_tcp_hdrlen()
50 * skb_tcp_all_headers - Returns size of all headers for a TCP packet
65 * skb_inner_tcp_all_headers - Returns size of all headers for an encap TCP packet
70 * if (skb_is_gso(skb) && skb->encapsulatio
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/linux/Documentation/admin-guide/cifs/
H A Dusage.rst18 MS-SMB2 (for detailed SMB2/SMB3/SMB3.1.1 protocol specification)
36 (e.g. /usr/src/linux-2.5.73)
48 the modules directory e.g. /lib/modules/6.3.0-060300-generic/kernel/fs/smb/client/cifs.ko).
57 required, mount.cifs is recommended. Most distros include a ``cifs-utils``
63 found at cifs-utils.git on git.samba.org
122 mounts, unless umount is invoked with -i (which will avoid invoking a umount
166 disabled on a per-mount basis by specifying ``nouser_xattr`` on mount.
184 (the few optional settings are passed in on mount via -o parameters instead).
191 ln -s /mnt/foo bar
196 that is ignored by local server applications and non-cifs clients and that will
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/linux/sound/pci/echoaudio/
H A Dechoaudio_dsp.c3 Copyright Echo Digital Audio Corporation (c) 1998 - 2004
7 This file is part of Echo Digital Audio's generic driver library.
9 Echo Digital Audio's generic driver library is free software;
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22 MA 02111-1307, USA.
26 Translation from C++ and adaptation for use in ALSA-Driver
40 command and then write a non-zero value to the Handshake field in the
46 /* Wait up to 20ms for the handshake from the DSP */ in wait_handshake()
50 if (chip->comm_page->handshake) { in wait_handshake()
56 dev_err(chip->card->dev, "wait_handshake(): Timeout waiting for DSP\n"); in wait_handshake()
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/linux/tools/testing/selftests/net/mptcp/
H A Dmptcp_join.sh2 # SPDX-License-Identifier: GPL-2.0
46 declare -A all_tests
47 declare -a only_tests_ids
48 declare -a only_tests_names
49 declare -A failed_tests
103 ip netns exec $netns sysctl -q net.mptcp.pm_type=0 2>/dev/null || true
105 ip netns exec $netns sysctl -q net.mptcp.checksum_enabled=1
121 ip -net "$ns1" addr add 10.0.$i.1/24 dev ns1eth$i
122 ip -net "$ns1" addr add dead:beef:$i::1/64 dev ns1eth$i nodad
123 ip -net "$ns1" link set ns1eth$i up
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/linux/Documentation/trace/
H A Dftrace.rst2 ftrace - Function Tracer
13 - Written for: 2.6.28-rc2
14 - Updated for: 3.10
15 - Updated for: 4.13 - Copyright 2017 VMware Inc. Steven Rostedt
16 - Converted to rst format - Changbin Du <changbin.du@intel.com>
19 ------------
24 performance issues that take place outside of user-space.
41 ----------------------
43 See Documentation/trace/ftrace-design.rst for details for arch porters and such.
47 ---------------
[all …]
/linux/drivers/bus/mhi/host/
H A Ddebugfs.c1 // SPDX-License-Identifier: GPL-2.0
17 struct mhi_controller *mhi_cntrl = m->private; in mhi_debugfs_states_show()
21 to_mhi_pm_state_str(mhi_cntrl->pm_state), in mhi_debugfs_states_show()
22 mhi_is_active(mhi_cntrl) ? "Active" : "Inactive", in mhi_debugfs_states_show()
23 mhi_state_str(mhi_cntrl->dev_state), in mhi_debugfs_states_show()
24 TO_MHI_EXEC_STR(mhi_cntrl->ee), in mhi_debugfs_states_show()
25 mhi_cntrl->wake_set ? "true" : "false"); in mhi_debugfs_states_show()
28 seq_printf(m, "M0: %u M2: %u M3: %u", mhi_cntrl->M0, mhi_cntrl->M2, in mhi_debugfs_states_show()
29 mhi_cntrl->M3); in mhi_debugfs_states_show()
32 atomic_read(&mhi_cntrl->dev_wake), in mhi_debugfs_states_show()
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/linux/fs/smb/client/
H A Dcifsglob.h1 /* SPDX-License-Identifier: LGPL-2.1 */
58 * max attribute cache timeout (jiffies) - 2^30
81 /* echo interval in seconds */
112 #define CIFS_DFS_ROOT_SES(ses) ((ses)->dfs_root_ses ?: (ses))
225 struct shash_desc *hmacsha256; /* hmac-sha256 hash function, for SMB2 signatures */
227 struct shash_desc *aes_cmac; /* block-cipher based MAC function, for SMB3 signatures */
229 struct crypto_aead *enc; /* smb3 encryption AEAD TFM (AES-CCM and AES-GCM) */
230 struct crypto_aead *dec; /* smb3 decryption AEAD TFM (AES-CCM and AES-GCM) */
342 * message field DataRemaining for out-of-band data read (e.g through
431 /* check if we can send an echo or nor */
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/linux/net/dccp/
H A Doutput.c

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