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/Linux-v4.19/Documentation/scheduler/
Dsched-stats.txt7 12 which was in the kernel from 2.6.13-2.6.19 (version 13 never saw a kernel
38 1) # of times sched_yield() was called
43 3) # of times schedule() was called
47 5) # of times try_to_wake_up() was called
48 6) # of times try_to_wake_up() was called to wake up the local cpu
70 1) # of times in this domain load_balance() was called when the
71 cpu was idle
73 the load did not require balancing when the cpu was idle
75 more tasks and failed, when the cpu was idle
77 load_balance() in this domain when the cpu was idle
[all …]
Dsched-nice-design.txt7 Unfortunately that was not that easy to implement under the old
9 support was historically coupled to timeslice length, and timeslice
10 units were driven by the HZ tick, so the smallest timeslice was 1/HZ.
37 changing the ABI to extend priorities was discarded early on.)
44 this was long ago when hardware was weaker and caches were smaller, and
56 coupling to timeslices and granularity it was not really viable.
59 about Linux's nice level support was its assymetry around the origo
75 depend on the nice level of the parent shell - if it was at nice -10 the
76 CPU split was different than if it was at +5 or +10.
78 A third complaint against Linux's nice level support was that negative
[all …]
/Linux-v4.19/Documentation/media/uapi/v4l/
Dhist-v4l2.rst9 Soon after the V4L API was added to the kernel it was criticised as too
14 another four years and two stable kernel releases until the new API was
23 1998-08-27: The :ref:`select() <func-select>` function was introduced.
27 1998-09-18: The ``VIDIOC_NONCAP`` ioctl was replaced by the otherwise
39 1998-10-02: The ``id`` field was removed from struct
41 renamed. The :ref:`VIDIOC_QUERYSTD` ioctl was
45 Codec API was released.
50 1998-11-12: The read/write directon of some ioctls was misdefined.
57 with ``V4L2_CID_AUDIO``. The ``V4L2_MAJOR`` define was removed from
58 ``videodev.h`` since it was only used once in the ``videodev`` kernel
[all …]
Ddev-teletext.rst9 This interface was aimed at devices receiving and demodulating Teletext
16 The Teletext API was designed by Martin Buck. It was defined in the
23 Eventually the Teletext API was integrated into the V4L API with
30 them. So the decision was made to finally remove support for the
Dvidioc-query-dv-timings.rst57 If the timings could not be detected because there was no signal, then
58 ENOLINK is returned. If a signal was detected, but it was unstable and
80 No timings could be detected because no signal was found.
83 The signal was unstable and the hardware could not lock on to it.
Dfunc-write.rst57 nothing was written. On error, -1 is returned, and the ``errno``
63 :ref:`O_NONBLOCK <func-open>` flag and no buffer space was
77 The call was interrupted by a signal before any data was written.
/Linux-v4.19/arch/arm/tools/
Dsyscall.tbl21 # 7 was sys_waitpid
31 # 17 was sys_break
32 # 18 was sys_stat
42 # 28 was sys_fstat
45 # 31 was sys_stty
46 # 32 was sys_gtty
49 # 35 was sys_ftime
58 # 44 was sys_prof
62 # 48 was sys_signal
67 # 53 was sys_lock
[all …]
/Linux-v4.19/Documentation/ABI/removed/
Dsysfs-class-rfkill9 Description: This file was deprecated because there no longer was a way to
11 This file was scheduled to be removed in 2012, and was removed
/Linux-v4.19/Documentation/filesystems/
Dlocks.txt14 The old flock(2) emulation in the kernel was swapped for proper BSD
29 Because sendmail was unable to use the old flock() emulation, many sendmail
31 for example. This gave rise to some other subtle problems if sendmail was
46 race and deadlock conditions that the current solution was the only
57 'Documentation/filesystems/mandatory-locking.txt' was prior to this release a
58 general configuration option that was valid for all mounted filesystems. This
59 had a number of inherent dangers, not the least of which was the ability to
Ddnotify.txt15 DN_ACCESS A file in the directory was accessed (read)
16 DN_MODIFY A file in the directory was modified (write,truncate)
17 DN_CREATE A file was created in the directory
18 DN_DELETE A file was unlinked from directory
19 DN_RENAME A file in the directory was renamed
/Linux-v4.19/Documentation/media/uapi/cec/
Dcec-ioc-receive.rst98 - Timestamp in ns of when the last byte of the message was transmitted.
103 - Timestamp in ns of when the last byte of the message was received.
111 filled in by the driver with the length of the reply message if ``reply`` was set.
124 the transmit result (when transmit was called in non-blocking mode). This
134 this message was received, not transmitted.
140 the payload of the reply message if ``timeout`` was set.
164 this message was transmitted, not received, unless this is the
171 this message was received, not transmitted.
233 - The message was transmitted successfully. This is mutually
236 the transmit was eventually successful.
[all …]
/Linux-v4.19/Documentation/arm/nwfpe/
DREADME4 The majority of the code was written by me, Scott Bambrough It is
6 where required. It was written quickly, with a goal of implementing a
17 Another choice I made was in the file structure. I have attempted to
30 SoftFloat to the ARM was done by Phil Blundell, based on an earlier
57 SoftFloat was written by John R. Hauser. This work was made possible in
59 1947 Center Street, Berkeley, California 94704. Funding was partially
61 original version of this code was written as part of a project to build
/Linux-v4.19/fs/reiserfs/
DREADME40 fair, ask. (Last I spoke with him Richard was contemplating how best
84 Hans Reiser was the project initiator, primary architect, source of all
88 Vladimir Saveljev was one of the programmers, and he worked long hours
91 was quite remarkable. I don't think that money can ever motivate someone
99 substantial portion of the total code. He realized that there was a
106 tried to put me in a position where I was forced into giving control
109 really force takeovers of sole proprietorships.) This was something
111 why we should do what we do, or why innovation was possible in
112 general, but he was sure that he ought to be controlling it. Every
113 innovation had to be forced past him while he was with us. He added
[all …]
/Linux-v4.19/virt/kvm/arm/
Dtrace.h222 TP_PROTO(unsigned long vcpu_pc, bool was, bool now),
223 TP_ARGS(vcpu_pc, was, now),
227 __field( bool, was )
233 __entry->was = was;
238 __entry->vcpu_pc, __entry->was ? "on" : "off",
/Linux-v4.19/Documentation/scsi/
Dsym53c500_cs.txt2 package, and was written by Tom Corner (tcorner@via.at). A rewrite was
8 All the USE_BIOS code has been ripped out. It was never used, and could
14 The Symbios Logic 53c500 chip was used in the "newer" (circa 1997) version
/Linux-v4.19/Documentation/media/uapi/dvb/
Dfrontend-stat-properties.rst39 frontend, but it was not possible to collect it (could be a
64 measurement was not complete yet.
83 measurement was not complete yet.
114 measurement was not complete yet.
128 measurement was taken.
142 measurement was not complete yet.
171 measurement was not complete yet.
185 measurement was taken.
199 measurement was not complete yet.
220 measurement was not complete yet.
[all …]
/Linux-v4.19/tools/testing/selftests/ftrace/
DREADME55 * FAIL: The test failed, but was expected to succeed. The test which exits
59 for example, the test was interrupted
61 or the test was set up incorrectly
64 * UNTESTED: The test was not run, currently just a placeholder.
70 * XFAIL: The test failed, and was expected to fail.
/Linux-v4.19/Documentation/devicetree/bindings/arm/
Dgemini.txt4 produced by Storlink Semiconductor around 2005. The company was renamed
6 It was derived from earlier products from Storm named SL3316 (Centroid) and
9 Storm Semiconductor was acquired by Cortina Systems in 2008 and the SoC was
10 produced and used for NAS and similar usecases. In 2014 Cortina Systems was
/Linux-v4.19/Documentation/driver-api/usb/
Derror-codes.rst70 ``-EPERM`` Submission failed because ``urb->reject`` was set.
72 ``-EHOSTUNREACH`` URB was rejected because the device is suspended.
100 ``-ENOENT`` URB was synchronously unlinked by
118 a driver cannot tell whether there was a
130 completed, and no other error was reported
145 ``-EOVERFLOW`` [#f1]_ The amount of data returned by the endpoint was
152 was set in ``urb->transfer_flags``.
154 ``-ENODEV`` Device was removed. Often preceded by a burst
165 ``-ECONNRESET`` URB was asynchronously unlinked by
/Linux-v4.19/drivers/block/paride/
DTransition-notes36 ps_tq if ps_tq_active was 0.
62 In the first case the thread was already in the area. In the second,
63 the thread was holding pd_lock and found pd_busy not set, which would
64 mean that (2) was already not true.
70 (3) was already not true.
79 pd.c. It means that (4) was already not true.
89 If it was 0 before we tried to acquire pd_lock, (2) would be
108 point, we would have violated either (2.1) (if it was set while ps_set_intr()
109 was acquiring ps_spinlock) or (2.3) (if it was set when we started to
/Linux-v4.19/Documentation/watchdog/
Dwatchdog-api.txt96 printf("The timeout was set to %d seconds\n", timeout);
98 This example might actually print "The timeout was set to 60 seconds"
105 printf("The timeout was is %d seconds\n", timeout);
127 printf("The pretimeout was is %d seconds\n", timeout);
138 printf("The timeout was is %d seconds\n", timeleft);
162 The machine was last rebooted by the watchdog because the thermal limit was
171 External monitoring relay/source 1 was triggered. Controllers intended for
177 External monitoring relay/source 2 was triggered
185 The last reboot was caused by the watchdog card
195 The watchdog saw a keepalive ping since it was last queried.
/Linux-v4.19/Documentation/core-api/
Derrseq.rst7 point where it was sampled.
22 a flag to tell whether the value has been sampled since a new value was
24 sampled it since the last time an error was recorded.
36 any new errors have occurred since that sampling was done, and atomically
37 record the state at the time that it was checked. This allows us to
44 has ever been an error set since it was first initialized.
111 whether one was made since they last checked, and the latest value
117 mistake occurred while his job was processing.
154 since the last time it was checked.
/Linux-v4.19/arch/arm/mm/
Dtlb-v6.S49 mcr p15, 0, r0, c8, c6, 1 @ TLB invalidate D MVA (was 1)
51 mcrne p15, 0, r0, c8, c5, 1 @ TLB invalidate I MVA (was 1)
53 mcr p15, 0, r0, c8, c7, 1 @ TLB invalidate MVA (was 1)
/Linux-v4.19/Documentation/i2c/
Dfault-codes40 transmit mode: some other master was transmitting different
57 Returned by SMBus adapters when the bus was busy for longer
60 or that the reset was attempted but failed.
64 detected before any I/O operation was started. Use a more
87 an I2C device was temporarily not responding, usually it
100 have verified that functionality was supported before it
117 time, and was aborted before it completed.
/Linux-v4.19/arch/m68k/ifpsp060/
DCHANGES33 1) "movep" emulation where data was being read from memory
34 was reading the intermediate bytes. Emulation now only
37 2) "flogn", "flog2", and "flog10" of "1" was setting the
42 mode was pre-decrement or post-increment and the address register
43 was A0 or A1, the address register was not being updated as a result

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