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/Linux-v5.10/Documentation/ABI/testing/
Dsysfs-block-device4 Contact: linux-ide@vger.kernel.org
6 (RW) Used by drivers which support software controlled activity
12 0 OFF - the LED is not activated on activity
13 1 BLINK_ON - the LED blinks on every 10ms when activity is
15 2 BLINK_OFF - the LED is on when idle, and blinks off
16 every 10ms when activity is detected.
20 control the activity LED via the em_message file.
26 Contact: linux-ide@vger.kernel.org
28 (RW) Hard disk shock protection
34 - If the device does not support the unload heads feature,
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/Linux-v5.10/drivers/leds/trigger/
Dledtrig-disk.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * LED Disk Activity Trigger
40 led_trigger_register_simple("disk-activity", &ledtrig_disk); in ledtrig_disk_init()
41 led_trigger_register_simple("disk-read", &ledtrig_disk_read); in ledtrig_disk_init()
42 led_trigger_register_simple("disk-write", &ledtrig_disk_write); in ledtrig_disk_init()
43 led_trigger_register_simple("ide-disk", &ledtrig_ide); in ledtrig_disk_init()
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
18 For more details read Documentation/leds/leds-class.rst.
23 tristate "LED One-shot Trigger"
25 This allows LEDs to blink in one-shot pulses with parameters
36 bool "LED Disk Trigger"
39 This allows LEDs to be controlled by disk activity.
46 This allows LEDs to be controlled by MTD activity.
53 The flash frequency is a hyperbolic function of the 1-minute
75 tristate "LED activity Trigger"
130 This allows LEDs to be controlled by network device activity.
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Dledtrig-mtd.c1 // SPDX-License-Identifier: GPL-2.0-only
7 * Based on LED IDE-Disk Activity Trigger
37 led_trigger_register_simple("nand-disk", &ledtrig_nand); in ledtrig_mtd_init()
DMakefile1 # SPDX-License-Identifier: GPL-2.0
2 obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
3 obj-$(CONFIG_LEDS_TRIGGER_ONESHOT) += ledtrig-oneshot.o
4 obj-$(CONFIG_LEDS_TRIGGER_DISK) += ledtrig-disk.o
5 obj-$(CONFIG_LEDS_TRIGGER_MTD) += ledtrig-mtd.o
6 obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) += ledtrig-heartbeat.o
7 obj-$(CONFIG_LEDS_TRIGGER_BACKLIGHT) += ledtrig-backlight.o
8 obj-$(CONFIG_LEDS_TRIGGER_GPIO) += ledtrig-gpio.o
9 obj-$(CONFIG_LEDS_TRIGGER_CPU) += ledtrig-cpu.o
10 obj-$(CONFIG_LEDS_TRIGGER_ACTIVITY) += ledtrig-activity.o
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/Linux-v5.10/Documentation/devicetree/bindings/leds/
Dcommon.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jacek Anaszewski <jacek.anaszewski@gmail.com>
11 - Pavel Machek <pavel@ucw.cz>
25 led-sources:
30 $ref: /schemas/types.yaml#definitions/uint32-array
35 from the header include/dt-bindings/leds/common.h. If there is no
42 the header include/dt-bindings/leds/common.h. If there is no matching
48 function-enumerator:
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Dleds-gpio.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/leds/leds-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jacek Anaszewski <jacek.anaszewski@gmail.com>
11 - Pavel Machek <pavel@ucw.cz>
14 Each LED is represented as a sub-node of the gpio-leds device. Each
19 const: gpio-leds
24 "(^led-[0-9a-f]$|led)":
33 retain-state-suspended:
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/Linux-v5.10/include/dt-bindings/leds/
Dcommon.h1 /* SPDX-License-Identifier: GPL-2.0 */
40 /* Obsolete equivalent: "shift-key-light" */
51 #define LED_FUNCTION_DISK "disk"
56 Obsolete equivalents: "status-led:{red,green,blue}" (Motorola Droid 4),
64 #define LED_FUNCTION_ACTIVITY "activity"
71 #define LED_FUNCTION_DISK_ACTIVITY "disk-activity"
72 #define LED_FUNCTION_DISK_ERR "disk-err"
73 #define LED_FUNCTION_DISK_READ "disk-read"
74 #define LED_FUNCTION_DISK_WRITE "disk-write"
/Linux-v5.10/include/linux/
Dlru_cache.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
7 Copyright (C) 2003-2008, LINBIT Information Technologies GmbH.
8 Copyright (C) 2003-2008, Philipp Reisner <philipp.reisner@linbit.com>.
9 Copyright (C) 2003-2008, Lars Ellenberg <lars.ellenberg@linbit.com>.
24 This header file (and its .c file; kernel-doc of functions see there)
39 We replicate IO (more or less synchronously) to local and remote disk.
42 we need to resync all regions that have been target of in-flight WRITE IO
48 This is known as "write intent log", and can be implemented as on-disk
53 in-flight WRITE IO, e.g. by only lazily clearing the on-disk write-intent
64 [*] usually as a result of a cluster split-brain and insufficient protection.
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/Linux-v5.10/drivers/staging/unisys/Documentation/
Doverview.txt2 -----------
5 (s-Par(R)).
7 s-Par is firmware that provides hardware partitioning capabilities for
8 splitting large-scale Intel x86 servers into multiple isolated
9 partitions. s-Par provides a set of para-virtualized device drivers to
13 * visornic - network interface
14 * visorhba - scsi disk adapter
15 * visorinput - keyboard and mouse
18 within Documentation/driver-api/driver-model/, and utilize a driver named
25 The back-end for each device is owned and managed by a small,
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/Linux-v5.10/arch/parisc/include/asm/
Dled.h1 /* SPDX-License-Identifier: GPL-2.0 */
14 #define LED_LAN_TX LED0 /* for LAN transmit activity */
15 #define LED_LAN_RCV LED1 /* for LAN receive activity */
16 #define LED_DISK_IO LED2 /* for disk activity */
/Linux-v5.10/drivers/block/drbd/
Ddrbd_actlog.c1 // SPDX-License-Identifier: GPL-2.0-or-later
7 Copyright (C) 2003-2008, LINBIT Information Technologies GmbH.
8 Copyright (C) 2003-2008, Philipp Reisner <philipp.reisner@linbit.com>.
9 Copyright (C) 2003-2008, Lars Ellenberg <lars.ellenberg@linbit.com>.
31 * in the on disk ring buffer */
38 * purge-all, set-all-idle, set-all-active, ... to-be-defined
48 /* maximum slot number, "al-extents" in drbd.conf speak.
57 * sectors-written since device creation, and other data generation tag
61 /* --- 36 byte used --- */
76 /* --- 420 bytes used (36 + 64*6) --- */
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Ddrbd_int.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
7 Copyright (C) 2001-2008, LINBIT Information Technologies GmbH.
8 Copyright (C) 1999-2008, Philipp Reisner <philipp.reisner@linbit.com>.
9 Copyright (C) 2002-2008, Lars Ellenberg <lars.ellenberg@linbit.com>.
29 #include <linux/backing-dev.h>
72 #define ID_SYNCER (-1ULL)
80 dev_printk(level, disk_to_dev((device)->vdisk), fmt, ## args)
82 dev_printk(level, disk_to_dev((peer_device)->device->vdisk), fmt, ## args)
84 printk(level "drbd %s: " fmt, (resource)->name, ## args)
86 printk(level "drbd %s: " fmt, (connection)->resource->name, ## args)
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Ddrbd_proc.c1 // SPDX-License-Identifier: GPL-2.0-or-later
7 Copyright (C) 2001-2008, LINBIT Information Technologies GmbH.
8 Copyright (C) 1999-2008, Philipp Reisner <philipp.reisner@linbit.com>.
9 Copyright (C) 2002-2008, Lars Ellenberg <lars.ellenberg@linbit.com>.
46 typecheck(unsigned long, device->rs_total); in drbd_get_syncer_progress()
47 *rs_total = device->rs_total; in drbd_get_syncer_progress()
54 *bits_left = device->ov_left; in drbd_get_syncer_progress()
56 *bits_left = drbd_bm_total_weight(device) - device->rs_failed; in drbd_get_syncer_progress()
78 unsigned long tmp = 1000UL - left * 1000UL/total; in drbd_get_syncer_progress()
101 y = 20-x; in drbd_syncer_progress()
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/Linux-v5.10/Documentation/admin-guide/pm/
Dsleep-states.rst1 .. SPDX-License-Identifier: GPL-2.0
13 Sleep states are global low-power states of the entire system in which user
14 space code cannot be executed and the overall system activity is significantly
28 Suspend-to-Idle
29 ---------------
31 This is a generic, pure software, light-weight variant of system suspend (also
34 I/O devices into low-power states (possibly lower-power than available in the
38 The system is woken up from this state by in-band interrupts, so theoretically
43 or :ref:`suspend-to-RAM <s2ram>`, or it can be used in addition to any of the
50 -------
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/Linux-v5.10/arch/arm/boot/dts/
Dkirkwood-ns2lite.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include "kirkwood-ns2-common.dtsi"
8 compatible = "lacie,netspace_lite_v2", "marvell,kirkwood-88f6192", "marvell,kirkwood";
17 pinctrl-0 = <&pmx_ns2_sata0>;
18 pinctrl-names = "default";
20 nr-ports = <1>;
24 gpio-leds {
25 compatible = "gpio-leds";
27 blue-sata {
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Dkirkwood-topkick.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
5 #include "kirkwood-6282.dtsi"
8 model = "Universal Scientific Industrial Co. Topkick-1281P2";
9 compatible = "usi,topkick-1281P2", "usi,topkick", "marvell,kirkwood-88f6282", "marvell,kirkwood";
18 stdout-path = &uart0;
22 pinctrl: pin-controller@10000 {
26 * /-SW_LEFT(2)
28 * | /-SW_IDLE
30 * | | /-SW_RIGHT
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/Linux-v5.10/tools/perf/Documentation/
Dperf-timechart.txt1 perf-timechart(1)
5 ----
6 perf-timechart - Tool to visualize total system behavior during a workload
9 --------
14 -----------
20 but it's possible to record IO (disk, network) activity using -I argument.
28 Upper bar shows incoming events (disk reads, ingress network packets).
29 Lower bar shows outgoing events (disk writes, egress network packets).
34 -----------------
35 -o::
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/Linux-v5.10/Documentation/admin-guide/
Diostats.rst6 more extensive disk statistics have been introduced to help measure disk
7 activity. Tools such as ``sar`` and ``iostat`` typically interpret these and do
44 each snapshot of your disk statistics.
56 or long-lived system; so applications should be prepared to deal with
58 int (32 bit) or unsigned long (32-bit or 64-bit, depending on your
59 machine) as noted per-field below. Unless your observations are very
63 system-wide stats you'll have to find all the devices and sum them all up.
65 Field 1 -- # of reads completed (unsigned long)
68 Field 2 -- # of reads merged, field 6 -- # of writes merged (unsigned long)
71 ultimately handed to the disk, and so it will be counted (and queued)
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/Linux-v5.10/drivers/leds/
Dleds-hp6xx.c1 // SPDX-License-Identifier: GPL-2.0-only
7 * this driver is based on leds-spitz.c by Richard Purdie.
43 .default_trigger = "hp6xx-charge",
50 .default_trigger = "disk-activity",
59 ret = devm_led_classdev_register(&pdev->dev, &hp6xx_red_led); in hp6xxled_probe()
63 return devm_led_classdev_register(&pdev->dev, &hp6xx_green_led); in hp6xxled_probe()
69 .name = "hp6xx-led",
78 MODULE_ALIAS("platform:hp6xx-led");
/Linux-v5.10/arch/arm/mach-orion5x/
Dboard-d2net.c2 * arch/arm/mach-orion5x/board-d2net.c
4 * LaCie d2Network and Big Disk Network NAS setup
20 #include <asm/mach-types.h>
23 #include <plat/orion-gpio.h>
37 * SATA activity.
60 .default_trigger = "default-on",
76 .name = "leds-gpio",
77 .id = -1,
87 /* Configure register blink_ctrl to allow SATA activity LED blinking. */ in d2net_gpio_leds_init()
/Linux-v5.10/Documentation/admin-guide/device-mapper/
Ddm-zoned.rst2 dm-zoned
5 The dm-zoned device mapper target exposes a zoned block device (ZBC and
7 pattern constraints. In effect, it implements a drive-managed zoned
10 host-managed zoned block devices and can mitigate the potential
11 device-side performance degradation due to excessive random writes on
12 host-aware zoned block devices.
21 http://www.t13.org/Documents/UploadedDocuments/docs2015/di537r05-Zoned_Device_ATA_Command_Set_ZAC.p…
23 The dm-zoned implementation is simple and minimizes system overhead (CPU
25 host-managed disk with 256 MB zones, dm-zoned memory usage per disk
29 dm-zoned target devices are formatted and checked using the dmzadm
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/Linux-v5.10/drivers/macintosh/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
65 the keyboard and mouse on some machines, as well as the non-volatile
79 and the disk LED trigger and configure appropriately through sysfs.
82 bool "Use front LED as DISK LED by default"
88 This option makes the front LED default to the disk trigger
89 so that it blinks on disk activity.
164 If you have an Apple machine with a 1-button mouse, say Y here.
226 970MP dual-core processor.
245 blue LEDs "vu-meter" of the XServer macs.
/Linux-v5.10/fs/hpfs/
Dhpfs.h1 /* SPDX-License-Identifier: GPL-2.0 */
7 * a little bit modified by Mikulas Patocka, 1998-1999
20 For definitive information on HPFS, ask somebody else -- this is guesswork.
35 typedef u32 time32_t; /* 32-bit time_t type */
82 u8 funcversion; /* functional version - oldest version
84 this disk */
100 __le32 user_id_table; /* 8 preallocated sectors - user id */
120 u8 bad_sector: 1; /* bad sector, corrupted disk (???) */
130 u8 bad_sector: 1; /* bad sector, corrupted disk (???) */
197 these are for (CHKDSK, maybe?) -- OS/2 does not seem to use them
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/Linux-v5.10/Documentation/admin-guide/laptops/
Dlaptop-mode.rst2 How to conserve battery power using laptop-mode
12 ------------
14 Laptop mode is used to minimize the time that the hard disk needs to be spun up,
31 ------------
41 located in /etc/default/laptop-mode on Debian-based systems, or in
42 /etc/sysconfig/laptop-mode on other systems.
52 -------
64 * If you mount some of your ext3/reiserfs filesystems with the -n option, then
67 wrong options -- or it will fail because it cannot write to /etc/mtab.
80 -----------
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