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/linux/tools/testing/selftests/rcutorture/bin/
H A Djitterstart.sh4 # Start up the specified number of jitter.sh scripts in the background.
8 # n: Number of jitter.sh scripts to start up.
21 echo jitterstart.sh: Missing count of jitter.sh scripts to start.
36 jitter.sh $jitter_i "${jittering_dir}/jittering" "$@" &
H A Dkvm.sh58 jitter="-1"
79 echo " --jitter N [ maxsleep (us) [ maxspin (us) ] ]"
190 --jitter)
191 checkarg --jitter "(# threads [ sleep [ spin ] ])" $# "$2" '^-\{,1\}[0-9]\+\( \+[0-9]\+\)\{,2\} *$' '^error$'
192 jitter="$2"
265 # If you really want jitter for refscale or
267 # or the refscale. (But why jitter in these cases?)
268 jitter=0
507 split(jitter, ja);
567 print "echo Build-only run, so suppressing jitter | te
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H A Djitter.sh5 # of this script is to inflict random OS jitter on a concurrently running
8 # Usage: jitter.sh me jittering-path duration [ sleepmax [ spinmax ] ]
H A Dkvm-transform.sh10 # jitter_dir: Jitter directory for TORTURE_JITTER_START and
42 echo "Need valid jitter directory: '$jitter_dir'"
H A Djitterstop.sh4 # Remove the "jittering" file, signaling the jitter.sh scripts to stop,
/linux/Documentation/timers/
H A Dno_hz.rst8 efficiency and reducing OS jitter. Reducing OS jitter is important for
202 So you enable all the OS-jitter features described in this document,
204 your workload isn't affected that much by OS jitter, or is it because
206 by providing a simple OS-jitter test suite, which is available on branch
213 whether or not you have succeeded in removing OS jitter from your system.
214 If this trace shows that you have removed OS jitter as much as is
216 sensitive to OS jitter.
219 We do not currently have a good way to remove OS jitter from single-CPU
286 of OS jitter, including interrupts and system-utility tasks
290 * Some sources of OS jitter can currently be eliminated only by
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/linux/include/uapi/linux/
H A Dtimex.h81 __kernel_long_t jitter; /* pps jitter (us) (ro) */ member
84 __kernel_long_t jitcnt; /* jitter limit exceeded (ro) */
120 long long jitter; /* pps jitter (us) (ro) */ member
124 long long jitcnt; /* jitter limit exceeded (ro) */
182 #define STA_PPSJITTER 0x0200 /* PPS signal jitter exceeded (ro) */
/linux/crypto/
H A DKconfig1121 tristate "CPU Jitter Non-Deterministic RNG (Random Number Generator)"
1125 CPU Jitter RNG (Random Number Generator) from the Jitterentropy library
1139 prompt "CPU Jitter RNG Memory Size"
1142 The Jitter RNG measures the execution time of memory accesses.
1151 the entropy rate produced by the Jitter RNG can be modified.
1181 int "CPU Jitter RNG Oversampling Rate"
1185 The Jitter RNG allows the specification of an oversampling rate (OSR).
1186 The Jitter RNG operation requires a fixed amount of timing
1190 by the OSR factor. The oversampling allows the Jitter RNG to operate
1193 trade-off, however, is that the Jitter RNG now requires more time
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/linux/include/linux/usb/
H A Dmidi-v2.h41 #define USB_MS_MIDI_PROTO_1_0_64_JRTS 0x02 /* MIDI 1.0, UMP up to 64bits, Jitter Reduction Timestam…
43 #define USB_MS_MIDI_PROTO_1_0_128_JRTS 0x04 /* MIDI 1.0, UMP up to 128bits, Jitter Reduction Timest…
45 #define USB_MS_MIDI_PROTO_2_0_JRTS 0x12 /* MIDI 2.0, Jitter Reduction Timestamps */
/linux/net/sched/
H A Dsch_netem.c42 packets and add random jitter (and correlation). The random
101 s64 jitter;
499 if (q->latency || q->jitter || q->rate) in netem_enqueue()
583 delay = tabledist(q->latency, q->jitter, in netem_enqueue()
1086 ret = validate_time(tb[TCA_NETEM_JITTER64], "jitter", extack); in netem_change()
1114 q->jitter = PSCHED_TICKS2NS(qopt->jitter); in netem_change()
1147 q->jitter = nla_get_s64(tb[TCA_NETEM_JITTER64]); in netem_init()
1155 /* capping jitter to the range acceptable by tabledist() */ in netem_init()
1156 q->jitter in netem_init()
90 s64 jitter; global() member
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/linux/include/net/
H A Dieee8021q.h17 * @IEEE8021Q_TT_VI: Video, < 100 ms latency and jitter
18 * @IEEE8021Q_TT_VO: Voice, < 10 ms latency and jitter
/linux/Documentation/sound/cards/
H A Dimg-spdif-in.rst43 This control is used to modify the locking/jitter rejection characteristics
44 of the block. Larger values increase the locking range, but reduce jitter
/linux/drivers/media/pci/mantis/
H A Dmantis_pcmcia.c28 * again, definitely it is jitter alone
52 * again, definitely it is jitter alone
/linux/kernel/trace/
H A Dtrace_clock.c11 * - medium: scalable global clock with some jitter
54 * jitter between CPUs. So it's a pretty scalable clock, but there
/linux/kernel/rcu/
H A DKconfig279 Use this option to reduce OS jitter for aggressive HPC or
282 asymmetric multiprocessors. The price of this reduced jitter
306 Say Y here if you need reduced OS jitter, despite added overhead.
/linux/include/linux/
H A Dtrace_clock.h10 * - medium: scalable global clock with some jitter
H A Dtime32.h40 s32 jitter; member
/linux/drivers/clk/
H A Dclk-max77686.c252 /* MAX77802: Enable low-jitter mode on the 32khz clocks. */ in max77686_clk_probe()
258 dev_err(dev, "Failed to config low-jitter: %d\n", ret); in max77686_clk_probe()
H A DKconfig54 tristate "Ti LMK04832 JESD204B Compliant Clock Jitter Cleaner"
59 Low-Noise JESD204B Compliant Clock Jitter Cleaner With Dual Loop PLLs
439 and jitter attenuator ICs with fractional and integer dividers.
/linux/Documentation/devicetree/bindings/clock/
H A Dstarfive,jh7110-pll.yaml10 These PLLs are high speed, low jitter frequency synthesizers in the JH7110.
H A Drenesas,versaclock7.yaml14 jitter attenuator ICs with fractional and integer dividers.
/linux/drivers/net/wireguard/
H A Dtimers.c14 * `REKEY_TIMEOUT + jitter` ms.
21 * jitter` ms.
/linux/arch/mips/include/asm/octeon/
H A Dcvmx-spxx-defs.h427 uint64_t jitter:3; member
439 uint64_t jitter:3;
/linux/Documentation/scsi/
H A Dlpfc.rst33 jitter, or a device temporarily loses connectivity (due to its cable
/linux/drivers/clk/ti/
H A Dclkt_dpll.c62 * internal clock frequency Fint. See the 34xx TRM 4.7.6.2 "DPLL Jitter
75 /* DPLL divider must result in a valid jitter correction val */ in _dpll_test_fint()

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