| /linux-6.6.21/drivers/iio/common/inv_sensors/ |
| D | inv_sensors_timestamp.c | 48 ts->min_period = INV_SENSORS_TIMESTAMP_MIN(chip->clock_period, chip->jitter); in inv_sensors_timestamp_init()
49 ts->max_period = INV_SENSORS_TIMESTAMP_MAX(chip->clock_period, chip->jitter); in inv_sensors_timestamp_init()
104 int64_t delta, jitter; in inv_align_timestamp_it() local
111 jitter = INV_SENSORS_TIMESTAMP_JITTER((int64_t)ts->period, ts->chip.jitter); in inv_align_timestamp_it()
112 if (delta > jitter) in inv_align_timestamp_it()
113 adjust = jitter; in inv_align_timestamp_it()
114 else if (delta < -jitter) in inv_align_timestamp_it()
115 adjust = -jitter; in inv_align_timestamp_it()
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| /linux-6.6.21/Documentation/admin-guide/ |
| D | kernel-per-CPU-kthreads.rst | 2 Reducing OS jitter due to per-cpu kthreads
6 options to control their OS jitter. Note that non-per-CPU kthreads are
7 not listed here. To reduce OS jitter from non-per-CPU kthreads, bind
26 - In order to locate kernel-generated OS jitter on CPU N:
43 To reduce its OS jitter, do any of the following:
62 To reduce its OS jitter, do the following:
73 To reduce its OS jitter, do one of the following:
87 To reduce its OS jitter, each softirq vector must be handled
202 housekeeping CPUs, which can tolerate OS jitter.
228 To reduce its OS jitter, do any of the following:
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| /linux-6.6.21/kernel/time/ |
| D | ntp.c | 197 txc->jitter = pps_jitter; in pps_fill_timex()
199 txc->jitter = pps_jitter / NSEC_PER_USEC; in pps_fill_timex()
229 txc->jitter = 0; in pps_fill_timex()
877 static inline long pps_phase_filter_get(long *jitter) in pps_phase_filter_get() argument
879 *jitter = pps_tf[0] - pps_tf[1]; in pps_phase_filter_get()
880 if (*jitter < 0) in pps_phase_filter_get()
881 *jitter = -*jitter; in pps_phase_filter_get()
991 long jitter; in hardpps_update_phase() local
995 correction = pps_phase_filter_get(&jitter); in hardpps_update_phase()
1001 if (jitter > (pps_jitter << PPS_POPCORN)) { in hardpps_update_phase()
[all …]
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| D | time.c | 307 txc->jitter = tx32.jitter; in get_old_timex32()
336 tx32.jitter = txc->jitter; in put_old_timex32()
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| /linux-6.6.21/tools/testing/selftests/rcutorture/bin/ |
| D | jitterstart.sh | 21 echo jitterstart.sh: Missing count of jitter.sh scripts to start.
36 jitter.sh $jitter_i "${jittering_dir}/jittering" "$@" &
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| D | kvm.sh | 56 jitter="-1"
176 --jitter)
177 …checkarg --jitter "(# threads [ sleep [ spin ] ])" $# "$2" '^-\{,1\}[0-9]\+\( \+[0-9]\+\)\{,2\} *$…
178 jitter="$2"
248 jitter=0
461 split(jitter, ja);
579 -v jitter="$jitter" \
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| /linux-6.6.21/include/uapi/linux/ |
| D | timex.h | 81 __kernel_long_t jitter; /* pps jitter (us) (ro) */ member
120 long long jitter; /* pps jitter (us) (ro) */ member
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| /linux-6.6.21/net/sched/ |
| D | sch_netem.c | 87 s64 jitter; member
479 if (q->latency || q->jitter || q->rate) in netem_enqueue()
545 delay = tabledist(q->latency, q->jitter, in netem_enqueue()
1008 q->jitter = PSCHED_TICKS2NS(qopt->jitter); in netem_change()
1041 q->jitter = nla_get_s64(tb[TCA_NETEM_JITTER64]); in netem_change()
1050 q->jitter = min_t(s64, abs(q->jitter), INT_MAX); in netem_change()
1159 qopt.jitter = min_t(psched_time_t, PSCHED_NS2TICKS(q->jitter), in netem_dump()
1171 if (nla_put(skb, TCA_NETEM_JITTER64, sizeof(q->jitter), &q->jitter)) in netem_dump()
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| /linux-6.6.21/Documentation/timers/ |
| D | no_hz.rst | 8 efficiency and reducing OS jitter. Reducing OS jitter is important for
205 So you enable all the OS-jitter features described in this document,
207 your workload isn't affected that much by OS jitter, or is it because
209 by providing a simple OS-jitter test suite, which is available on branch
216 whether or not you have succeeded in removing OS jitter from your system.
217 If this trace shows that you have removed OS jitter as much as is
219 sensitive to OS jitter.
222 We do not currently have a good way to remove OS jitter from single-CPU
289 of OS jitter, including interrupts and system-utility tasks
293 * Some sources of OS jitter can currently be eliminated only by
[all …]
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| /linux-6.6.21/Documentation/sound/cards/ |
| D | img-spdif-in.rst | 43 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-6.6.21/include/linux/ |
| D | time32.h | 40 s32 jitter; member
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| /linux-6.6.21/include/linux/iio/common/ |
| D | inv_sensors_timestamp.h | 17 uint32_t jitter; member
|
| /linux-6.6.21/Documentation/devicetree/bindings/clock/ |
| D | renesas,versaclock7.yaml | 14 jitter attenuator ICs with fractional and integer dividers.
|
| D | starfive,jh7110-pll.yaml | 10 These PLLs are high speed, low jitter frequency synthesizers in the JH7110.
|
| /linux-6.6.21/drivers/hte/ |
| D | Kconfig | 10 less jitter. This framework provides a generic interface to such HTE
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| /linux-6.6.21/arch/mips/include/asm/octeon/ |
| D | cvmx-spxx-defs.h | 427 uint64_t jitter:3; member
439 uint64_t jitter:3;
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| /linux-6.6.21/Documentation/devicetree/bindings/iio/frequency/ |
| D | adi,adf4377.yaml | 14 The ADF4377 is a high performance, ultralow jitter, dual output integer-N
|
| /linux-6.6.21/kernel/rcu/ |
| D | Kconfig | 240 Use this option to reduce OS jitter for aggressive HPC or
243 asymmetric multiprocessors. The price of this reduced jitter
259 Say Y here if you need reduced OS jitter, despite added overhead.
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| /linux-6.6.21/Documentation/scsi/ |
| D | lpfc.rst | 33 jitter, or a device temporarily loses connectivity (due to its cable
|
| /linux-6.6.21/tools/perf/Documentation/ |
| D | perf-arm-spe.txt | 137 jitter=1 - use jitter to avoid resonance when sampling (PMSIRR.RND)
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| /linux-6.6.21/Documentation/driver-api/ |
| D | pps.rst | 75 you should take into account the latencies and jitter introduced by
77 synchronized with PPS through USB. With USB 2.0, jitter may decrease
|
| /linux-6.6.21/Documentation/devicetree/bindings/pci/ |
| D | fsl,imx6q-pcie-common.yaml | 88 Note that the IMX6 LVDS clock outputs do not meet gen2 jitter
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| /linux-6.6.21/drivers/net/dsa/sja1105/ |
| D | sja1105_static_config.h | 412 u64 jitter; member
|
| /linux-6.6.21/drivers/perf/ |
| D | arm_spe_pmu.c | 234 GEN_PMU_FORMAT_ATTR(jitter);
345 reg |= FIELD_PREP(PMSIRR_EL1_RND, ATTR_CFG_GET_FLD(attr, jitter)); in arm_spe_event_to_pmsirr()
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| /linux-6.6.21/arch/mips/cavium-octeon/executive/ |
| D | cvmx-spi.c | 279 spxx_trn4_ctl.s.jitter = 1; in cvmx_spi_reset_cb()
|