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/Documentation/RCU/
Dlockdep.rst40 rcu_read_lock_held(). This is useful in code that is
44 rcu_read_lock_bh_held(). This is useful in code that
48 rcu_read_lock_sched_held(). This is useful in code that
52 srcu_read_lock_held(). This is useful in code that
58 and compiler constraints. This is useful when the data
64 or coalescsing. This is useful when when testing the
/Documentation/process/
Dclang-format.rst12 - Quickly reformat a block of code to the kernel style. Specially useful
18 - Help you follow the coding style rules, specially useful for those
59 Counting the lines of such a diff is also useful for improving/tweaking
91 useful when moving code around, for complex code that is deeply intended,
96 it can be very useful.
182 They are typically useful for block re-formatting, rather than full-file.
/Documentation/admin-guide/media/
Ddvb_references.rst22 in both html and pdf formats, together with other useful documentation at:
26 You may also find useful material at https://linuxtv.org/downloads/.
/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-class-bdi40 For example, this is useful for providing a minimum QoS.
45 given percentage of the write-back cache. This is useful in
Dgpio-cdev15 Currently the only useful flags are O_RDWR.
Dsysfs-bus-iio-scd3026 recalibration (frc). This is useful in case there's known
/Documentation/admin-guide/
Dclearing-warn-once.rst9 This can be useful after test suite runs to reproduce problems.
Djfs.rst55 block device when blocks are freed. This is useful for SSD
59 a TRIM command to the block device is considered useful.
Dsysrq.rst162 sak(k) (Secure Access Key) is useful when you want to be sure there is no
174 It seems others find it useful as (System Attention Key) which is
175 useful when you want to exit a program that will not let you switch consoles.
193 The loglevels ``0``-``9`` are useful when your console is being flooded with
198 ``term(e)`` and ``kill(i)`` are useful if you have some sort of runaway process
202 "just thaw ``it(j)``" is useful if your system becomes unresponsive due to a
/Documentation/security/tpm/
Dtpm_event_log.rst21 it is useful is nicely put in the very first section of [1]:
25 therefore, attestation is typically more useful when the PCR contents
/Documentation/core-api/
Dtimekeeping.rst20 Useful for reliable timestamps and measuring short time intervals
49 This is rarely useful in the kernel.
124 reading the 'jiffies' variable. These are only useful when called
140 This is useful in some tracing or debugging code as well as
/Documentation/userspace-api/media/v4l/
Dhsv-formats.rst13 useful format for image segmentation algorithms.
/Documentation/networking/
Dipvs-sysctl.rst138 be useful, when user-space monitoring program deletes the
156 This may be useful, when a user makes a destination server
172 protocols like ipip, which is useful to prevent rescheduling
223 This is useful for normal connections with high traffic to reduce
230 Defines sync retries with period of sync_refresh_period/8. Useful
/Documentation/filesystems/ext4/
Dallocators.rst14 up file rewrites significantly. Therefore, it is useful to reduce
41 is useful to try to keep them all together.
/Documentation/fb/
Ddeferred_io.rst7 IO. The following example may be a useful explanation of how one such setup
34 It may be the case that this is useful in other scenarios as well. Paul Mundt
/Documentation/misc-devices/
Dc2port.rst15 This program is distributed in the hope that it will be useful,
29 or EC3 debug adapter. This solution is also useful in those systems
/Documentation/locking/
Dlocktorture.rst83 This capability is useful for automated testing.
97 automatically at boot time, in which case it is useful
99 coming and going. This parameter is only useful if
Dspinlocks.rst57 (rw_lock) versions of the spinlocks are sometimes useful. They allow multiple
79 The above kind of lock may be useful for complex data structures like
118 This is useful if you know that the data in question is only ever
/Documentation/devicetree/bindings/soc/amlogic/
Dclk-measure.txt5 The precision is multiple of MHz, useful to debug the clock states.
/Documentation/devicetree/bindings/iio/humidity/
Dhts221.txt9 as open drain, which is useful if several sensors share the same
/Documentation/devicetree/bindings/regulator/
Dregulator.yaml74 have the constant time for any level voltage change. This is useful
80 of any level. This is useful for regulators with exponential voltage
86 of any level. This is useful for regulators with exponential voltage
/Documentation/staging/
Dxz.rst33 useful unless you are hacking the XZ decompressor. xz_dec_test
94 useful. LZMA2 is slower to compress than e.g. Deflate or LZO even at
100 kernel, but I know that it would be useful in some embedded projects
/Documentation/devicetree/bindings/i2c/
Di2c-gate.txt1 An i2c gate is useful to e.g. reduce the digital noise for RF tuners connected
/Documentation/leds/
Duleds.rst5 The uleds driver supports userspace LEDs. This can be useful for testing

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