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/Linux-v5.4/Documentation/scheduler/
Dsched-stats.rst11 12 which was in the kernel from 2.6.13-2.6.19 (version 13 never saw a kernel
43 1) # of times sched_yield() was called
49 3) # of times schedule() was called
54 5) # of times try_to_wake_up() was called
55 6) # of times try_to_wake_up() was called to wake up the local cpu
78 1) # of times in this domain load_balance() was called when the
79 cpu was idle
81 the load did not require balancing when the cpu was idle
83 more tasks and failed, when the cpu was idle
85 load_balance() in this domain when the cpu was idle
[all …]
Dsched-nice-design.rst11 Unfortunately that was not that easy to implement under the old
13 support was historically coupled to timeslice length, and timeslice
14 units were driven by the HZ tick, so the smallest timeslice was 1/HZ.
41 changing the ABI to extend priorities was discarded early on.)
48 this was long ago when hardware was weaker and caches were smaller, and
60 coupling to timeslices and granularity it was not really viable.
63 about Linux's nice level support was its assymetry around the origo
79 depend on the nice level of the parent shell - if it was at nice -10 the
80 CPU split was different than if it was at +5 or +10.
82 A third complaint against Linux's nice level support was that negative
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/Linux-v5.4/Documentation/media/uapi/v4l/
Dhist-v4l2.rst16 Soon after the V4L API was added to the kernel it was criticised as too
21 another four years and two stable kernel releases until the new API was
30 1998-08-27: The :ref:`select() <func-select>` function was introduced.
34 1998-09-18: The ``VIDIOC_NONCAP`` ioctl was replaced by the otherwise
46 1998-10-02: The ``id`` field was removed from struct
48 renamed. The :ref:`VIDIOC_QUERYSTD` ioctl was
52 Codec API was released.
57 1998-11-12: The read/write directon of some ioctls was misdefined.
64 with ``V4L2_CID_AUDIO``. The ``V4L2_MAJOR`` define was removed from
65 ``videodev.h`` since it was only used once in the ``videodev`` kernel
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Dvidioc-qbuf.rst50 :c:type:`v4l2_buffer` to the same buffer type as was
120 ``EBUSY`` will be returned if the first buffer was queued directly and
145 when the buffer was enqueued. No new file descriptor is created at dequeue time
151 queue. When the ``O_NONBLOCK`` flag was given to the
168 buffer was in the outgoing queue.
173 ``length`` are invalid, or the ``V4L2_BUF_FLAG_REQUEST_FD`` flag was
174 set but the the given ``request_fd`` was invalid, or ``m.fd`` was
193 codecs if a buffer with the ``V4L2_BUF_FLAG_LAST`` was already
197 The ``V4L2_BUF_FLAG_REQUEST_FD`` flag was set but the device does not
199 the ``V4L2_BUF_FLAG_REQUEST_FD`` flag was not set but the device requires
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Dvidioc-query-dv-timings.rst64 If the timings could not be detected because there was no signal, then
65 ENOLINK is returned. If a signal was detected, but it was unstable and
87 No timings could be detected because no signal was found.
90 The signal was unstable and the hardware could not lock on to it.
/Linux-v5.4/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-v5.4/Documentation/admin-guide/
Dtainted-kernels.rst25 why the kernel was tainted is shown after the Process ID ('PID:') and a shortened
35 You'll find a 'Not tainted: ' there if the kernel was not tainted at the
36 time of the event; if it was, then it will print 'Tainted: ' and characters
42 the kernel got tainted earlier because a proprietary Module (``P``) was loaded,
43 a warning occurred (``W``), and an externally-built module was loaded (``O``).
61 * Proprietary module was loaded (#0)
63 * Externally-built ('out-of-tree') module was loaded (#12)
69 You can try to decode the number yourself. That's easy if there was only one
85 0 G/P 1 proprietary module was loaded
86 1 _/F 2 module was force loaded
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/Linux-v5.4/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-v5.4/arch/sh/kernel/syscalls/
Dsyscall.tbl27 # 17 was break
41 # 31 was stty
42 # 32 was gtty
45 # 35 was ftime
54 # 44 was prof
63 # 53 was lock
66 # 56 was mpx
68 # 58 was ulimit
69 # 59 was olduname
92 # 82 was select
[all …]
/Linux-v5.4/Documentation/media/uapi/cec/
Dcec-ioc-receive.rst105 - Timestamp in ns of when the last byte of the message was transmitted.
110 - Timestamp in ns of when the last byte of the message was received.
118 filled in by the driver with the length of the reply message if ``reply`` was set.
131 the transmit result (when transmit was called in non-blocking mode). This
141 this message was received, not transmitted.
147 the payload of the reply message if ``timeout`` was set.
171 this message was transmitted, not received, unless this is the
178 this message was received, not transmitted.
252 - The message was transmitted successfully. This is mutually
255 the transmit was eventually successful.
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/Linux-v5.4/arch/m68k/kernel/syscalls/
Dsyscall.tbl27 # 17 was break
41 # 31 was stty
42 # 32 was gtty
45 # 35 was ftime
54 # 44 was prof
63 # 53 was lock
66 # 56 was mpx
68 # 58 was ulimit
69 # 59 was oldolduname
108 # 98 was profil
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/Linux-v5.4/Documentation/powerpc/
Dvcpudispatch_stats.txt26 2. number of times this vcpu was dispatched on the same processor as last
28 3. number of times this vcpu was dispatched on a different processor core
30 4. number of times this vcpu was dispatched on a different chip
31 5. number of times this vcpu was dispatches on a different socket/drawer
36 6. number of times this vcpu was dispatched in its home node (chip)
37 7. number of times this vcpu was dispatched in a different node
38 8. number of times this vcpu was dispatched in a node further away (numa
/Linux-v5.4/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
/Linux-v5.4/arch/parisc/kernel/syscalls/
Dsyscall.tbl115 # 102 was socketcall
143 # 127 was create_module
146 # 130 was get_kernel_syms
154 # 137 was afs_syscall
186 # 167 was query_module
188 # 169 was nfsservctl
216 # 196 was getpmsg
217 # 197 was putpmsg
225 # 203 was attrctl
226 # 204 was acl_get
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/Linux-v5.4/Documentation/arm/nwfpe/
Dnwfpe.rst7 The majority of the code was written by me, Scott Bambrough It is
9 where required. It was written quickly, with a goal of implementing a
20 Another choice I made was in the file structure. I have attempted to
33 SoftFloat to the ARM was done by Phil Blundell, based on an earlier
61 SoftFloat was written by John R. Hauser. This work was made possible in
63 1947 Center Street, Berkeley, California 94704. Funding was partially
65 original version of this code was written as part of a project to build
/Linux-v5.4/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
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/Linux-v5.4/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-v5.4/Documentation/media/uapi/dvb/
Dfrontend-stat-properties.rst46 frontend, but it was not possible to collect it (could be a
71 measurement was not complete yet.
90 measurement was not complete yet.
121 measurement was not complete yet.
135 measurement was taken.
149 measurement was not complete yet.
178 measurement was not complete yet.
192 measurement was taken.
206 measurement was not complete yet.
227 measurement was not complete yet.
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/Linux-v5.4/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-v5.4/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-v5.4/virt/kvm/arm/
Dtrace.h223 TP_PROTO(unsigned long vcpu_pc, bool was, bool now),
224 TP_ARGS(vcpu_pc, was, now),
228 __field( bool, was )
234 __entry->was = was;
239 __entry->vcpu_pc, __entry->was ? "on" : "off",
/Linux-v5.4/Documentation/i2c/
Dfault-codes.rst44 transmit mode: some other master was transmitting different
61 Returned by SMBus adapters when the bus was busy for longer
64 or that the reset was attempted but failed.
68 detected before any I/O operation was started. Use a more
91 an I2C device was temporarily not responding, usually it
104 have verified that functionality was supported before it
120 Returned when a transfer was requested using an adapter
125 time, and was aborted before it completed.
/Linux-v5.4/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-v5.4/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-v5.4/Documentation/watchdog/
Dwatchdog-api.rst104 printf("The timeout was set to %d seconds\n", timeout);
106 This example might actually print "The timeout was set to 60 seconds"
113 printf("The timeout was is %d seconds\n", timeout);
136 printf("The pretimeout was is %d seconds\n", timeout);
148 printf("The timeout was is %d seconds\n", timeleft);
177 The machine was last rebooted by the watchdog because the thermal limit was
190 External monitoring relay/source 1 was triggered. Controllers intended for
198 External monitoring relay/source 2 was triggered
210 The last reboot was caused by the watchdog card
224 The watchdog saw a keepalive ping since it was last queried.

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