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/Linux-v5.10/tools/memory-model/litmus-tests/
DZ6.0+pooncerelease+poacquirerelease+fencembonceonce.litmus7 * when there is but one non-reads-from (AKA non-rf) link, does not suffice
8 * if there is more than one. Of the three processes, only P1() reads from
9 * P0's write, which means that there are two non-rf links: P1() to P2()
12 * When there are two or more non-rf links, you typically will need one
/Linux-v5.10/Documentation/locking/
Drobust-futexes.rst18 that says "there's a waiter pending", and the sys_futex(FUTEX_WAIT)
23 value) that there were waiter(s) pending, and does the
26 state, and there's no in-kernel state associated with it. The kernel
27 completely forgets that there ever was a futex at that address. This
44 the kernel cannot help with the cleanup: if there is no 'futex queue'
45 (and in most cases there is none, futexes being fast lightweight locks)
75 because the kernel has no knowledge about how many robust futexes there
89 At the heart of this new approach there is a per-thread private list of
93 time, the kernel checks this user-space list: are there any robust futex
96 In the common case, at do_exit() time, there is no list registered, so
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/Linux-v5.10/Documentation/devicetree/bindings/regulator/
Dnvidia,tegra-regulators-coupling.txt5 Thus on Tegra20 there are 3 coupled regulators and on NVIDIA Tegra30
6 there are 2.
11 On Tegra20 SoC's there are 3 coupled regulators: CORE, RTC and CPU.
18 On Tegra30 SoC's there are 2 coupled regulators: CORE and CPU. The CORE
/Linux-v5.10/Documentation/devicetree/bindings/power/supply/
Dtwl-charger.txt4 to know when charging is permissible, and when there is a connection
7 The choice of phy cannot be configured at a hardware level, so there
9 if there is a sibling of the BCI node which is compatible with
/Linux-v5.10/Documentation/timers/
Dno_hz.rst38 there are some situations where this old-school approach is still the
40 that use short bursts of CPU, where there are very frequent idle
43 clock interrupts will normally be delivered any way because there
68 If a CPU is idle, there is little point in sending it a scheduling-clock
80 unnecessary scheduling-clock interrupts. In these situations, there
107 If a CPU has only one runnable task, there is little point in sending it
108 a scheduling-clock interrupt because there is no other task to switch to.
121 by one less than the number of CPUs. In these situations, there is
131 (This is not an issue for CONFIG_NO_HZ_IDLE=y because there are no running
163 4. If there are more perf events pending than the hardware can
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/Linux-v5.10/drivers/staging/media/atomisp/
DTODO5 V4L2 driver, there are still some issues preventing it to
16 There are some hacks added there for it to wait for sensors to be
56 The code there is really dirty, ugly and probably wrong. I fixed
57 one bug there already, but the best would be to just trash it and use
73 CHT version. Yet, there are some ISP-specific headers that change the
106 there are any specific things that can be done to fold in support for
120 for this driver until the other work is done, as there will be a lot
/Linux-v5.10/Documentation/devicetree/bindings/net/
Dbrcm,unimac-mdio.txt16 Ethernet switch this MDIO block is integrated from, or must be two, if there
19 - interrupt-names: must be "mdio_done_error" when there is a share interrupt fed
21 "mdio_error" for the second when there are separate interrupts
/Linux-v5.10/arch/arm64/boot/dts/qcom/
Dsdm630-sony-xperia-ganges.dtsi9 * there are some differences that will need
25 * Volume Down, but currently there's an
/Linux-v5.10/Documentation/
DCOPYING-logo2 ("currently unofficial" just means that there has been no paperwork and
7 Note that there are black-and-white versions of this available that
DKconfig3 bool "Warn if there's a missing documentation file"
14 bool "Warn if there are errors at ABI files"
/Linux-v5.10/Documentation/userspace-api/media/v4l/
Dvidioc-g-edid.rst56 pad of the subdevice. If there is no EDID support for the given ``pad``
66 If there are fewer blocks than specified, then the driver will set
67 ``blocks`` to the actual number of blocks. If there are no EDID blocks
77 there are.
81 If there are no EDID blocks available at all, then
90 The driver assumes that the full EDID is passed in. If there are more
/Linux-v5.10/Documentation/networking/device_drivers/ethernet/toshiba/
Dspider_net.rst46 marks it full, and advances the GDACTDPA by one. Thus, when there is
55 and advance the tail pointer. Thus, when there is flowing RX traffic,
67 then mark the descr as "empty", ready to receive data. Thus, when there
117 the hardware can fill them, there is no problem. If, for some reason,
136 and is filling the next descrs. Since the OS doesn't see this, there
157 marked xa... which is "empty". Thus, from the OS point of view, there
158 is nothing to be done. In particular, there is the implicit assumption
168 and there can be no forward progress; the OS thinks there's nothing
177 operations there. Since this will leave "holes" in the ring, there
191 is full, the netdev is stopped. When there is room in the ring,
/Linux-v5.10/Documentation/ABI/testing/
Dsysfs-bus-i2c-devices-pca954x12 channel, which is useful when there is a device
19 which is useful if there is one channel that is
Dsysfs-kernel-boot_params9 If there's no setup_data in boot_params the subdirectory will
19 as a link list. In "setup_data" subdirectory there's one
/Linux-v5.10/Documentation/devicetree/bindings/i2c/
Di2c-gate.txt4 there are no competing masters to consider for gates and therefore there is
/Linux-v5.10/Documentation/process/
D6.Followthrough.rst13 It is a rare patch which is so good at its first posting that there is no
40 people remember who wrote kernel code, but there is little lasting fame
94 but there are times when somebody simply has to make a decision. If you
111 things. In particular, there may be more than one tree - one, perhaps,
115 For patches applying to areas for which there is no obvious subsystem tree
124 there's a good chance that you will get more comments from a new set of
146 the patch before. It may be tempting to ignore them, since there is no
155 where there are testers, there will be bug reports.
166 After any regressions have been dealt with, there may be other, ordinary
174 And don't forget that there are other milestones which may also create bug
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/Linux-v5.10/Documentation/devicetree/bindings/sound/
Dimx-audio-spdif.txt16 indicating there's a physical S/PDIF out connector
22 function of S/PDIF will be enabled, indicating there
/Linux-v5.10/drivers/block/paride/
DTransition-notes50 be preempted there.
51 2) When there is such a thread, pd_busy is set or pd_lock is held by
53 3) When there is such a thread, ps_tq_active is 0 or ps_spinlock is
55 4) When there is such a thread, all PIA belonging to pd.c have NULL
60 (1) can become not true if some thread enters that area while another is there.
72 case that needs consideration is call from pi_wake_up() and there
123 We don't need to reset it to NULL, since we are guaranteed that there
/Linux-v5.10/Documentation/devicetree/bindings/gpio/
Dnvidia,tegra20-gpio.txt7 there should be 7 interrupts specified, and for Tegra30, there should
/Linux-v5.10/Documentation/devicetree/bindings/misc/
Didt_89hpesx.txt5 Basically there is only one manufacturer: idt, but some
22 Optionally there can be EEPROM-compatible subnode:
/Linux-v5.10/tools/lib/traceevent/Documentation/
Dlibtraceevent-event_get.txt35 NULL is returned in case of error, in case there are no events or _index_ is
39 returned in case of error, or in case there are no events.
42 returned in case of error, or in case there are no events.
/Linux-v5.10/Documentation/ABI/stable/
Dsysfs-firmware-opal-elog15 Linux if there is no room for more log entries.
38 For each log entry (directory), there are the following
48 In the future there may be additional types.
/Linux-v5.10/Documentation/driver-api/mmc/
Dmmc-async-req.rst48 truly non-blocking. If there is an ongoing async request it waits
50 doesn't wait for the new request to complete. If there is no ongoing
67 with the previous transfer, since there is no previous request.
69 The argument is_first_req in pre_req() indicates that there is no previous
/Linux-v5.10/Documentation/driver-api/media/drivers/
Dbttv-devel.rst14 To handle the grabber boards correctly, there is a array tvcards[] in
27 If your card isn't listed there, you might check the source code for
28 new entries which are not listed yet. If there isn't one for your
35 module like ``msp3400`` to make sound work. If there isn't one for the
63 As mentioned above, there is a array which holds the required
/Linux-v5.10/Documentation/power/
Dbasic-pm-debugging.rst49 there is the file /sys/power/pm_test that can be used to make the hibernation
109 If the "freezer" test fails, there is a task that cannot be frozen (in that case
112 that there is a problem with the tasks freezer subsystem that should be
115 If the "devices" test fails, most likely there is a driver that cannot suspend
126 Once you have found the failing driver (there can be more than just one of
136 If the "platform" test fails, there is a problem with the handling of the
162 "reboot", "shutdown" and "platform" modes. If that does not work, there
165 individually. Otherwise, there is a problem with a modular driver and you can
168 - if there are n modules loaded and the attempt to suspend and resume fails,
171 - if there are n modules loaded and the attempt to suspend and resume succeeds,
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