Searched full:time (Results 1 – 25 of 1286) sorted by relevance
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| /Documentation/sound/designs/ |
| D | timestamping.rst | 7 - Trigger_tstamp is the system time snapshot taken when the .trigger
19 The difference (tstamp - trigger_tstamp) defines the elapsed time.
26 The use of these different pointers and time information depends on
30 - ``delay`` reports the time it will take to hear a new sample after all
34 along with a snapshot of system time. Applications can select from
42 of time as measured by different components of audio hardware. In
47 --------------------------------------------------------------> time
51 time time time time time
58 The analog time is taken at the last stage of the playback, as close
61 The link time is taken at the output of the SoC/chipset as the samples
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| /Documentation/devicetree/bindings/rtc/ |
| D | trivial-rtc.yaml | 23 # AB-RTCMC-32.768kHz-B5ZE-S3: Real Time Clock/Calendar Module with I2C Interface
25 # AB-RTCMC-32.768kHz-EOZ9: Real Time Clock/Calendar Module with I2C Interface
29 # Dallas DS1672 Real-time Clock
33 # I2C-BUS INTERFACE REAL TIME CLOCK MODULE
35 # I2C-BUS INTERFACE REAL TIME CLOCK MODULE with Battery Backed RAM
37 # I2C-BUS INTERFACE REAL TIME CLOCK MODULE
43 # Intersil ISL12022 Real-time Clock
45 # Real Time Clock Module with I2C-Bus
47 # Real Time Clock Module with I2C-Bus
49 # Real Time Clock
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| D | ingenic,jz4740-rtc.txt | 1 JZ4740 and similar SoCs real-time clock driver
16 - reset-pin-assert-time-ms: Reset pin low-level assertion
17 time after wakeup (default 60ms; range 0-125ms if RTC clock
19 - min-wakeup-pin-assert-time-ms: Minimum wakeup pin assertion
20 time (default 100ms; range 0-2s if RTC clock at 32 kHz)
35 reset-pin-assert-time-ms = <60>;
36 min-wakeup-pin-assert-time-ms = <100>;
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| D | atmel,at91sam9-rtc.txt | 1 Atmel AT91SAM9260 Real Time Timer
8 - atmel,rtt-rtc-time-reg: should encode the GPBR register used to store
9 the time base when the RTT is used as an RTC.
12 GPBR register used to store the time base).
22 atmel,rtt-rtc-time-reg = <&gpbr 0x0>;
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| /Documentation/scheduler/ |
| D | sched-rt-group.rst | 2 Real-Time group scheduling
28 resolution, or the time it takes to handle the budget refresh itself.
33 are real-time processes).
43 the amount of bandwidth (eg. CPU time) being constant. In order to schedule
45 of the CPU time available. Without a minimum guarantee a realtime group can
52 CPU time is divided by means of specifying how much time can be spent running
53 in a given period. We allocate this "run time" for each realtime group which
56 Any time not allocated to a realtime group will be used to run normal priority
57 tasks (SCHED_OTHER). Any allocated run time not used will also be picked up by
63 time dedicated for the graphics. We can then give this group a run time of 0.8
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| D | sched-deadline.rst | 12 3. Scheduling Real-Time Tasks
54 "runtime" microseconds of execution time every "period" microseconds, and
57 every time the task wakes up, the scheduler computes a "scheduling deadline"
61 task actually receives "runtime" time units within "deadline" if a proper
70 with the "traditional" real-time task model (see Section 3) can effectively
87 scheduling deadline - current time period
89 then, if the scheduling deadline is smaller than the current time, or
93 scheduling deadline = current time + deadline
99 - When a SCHED_DEADLINE task executes for an amount of time t, its
108 said to be "throttled" (also known as "depleted" in real-time literature)
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| /Documentation/devicetree/bindings/memory-controllers/ |
| D | omap-gpmc.txt | 58 - gpmc,cs-on-ns: Assertion time
59 - gpmc,cs-rd-off-ns: Read deassertion time
60 - gpmc,cs-wr-off-ns: Write deassertion time
63 - gpmc,adv-on-ns: Assertion time
64 - gpmc,adv-rd-off-ns: Read deassertion time
65 - gpmc,adv-wr-off-ns: Write deassertion time
66 - gpmc,adv-aad-mux-on-ns: Assertion time for AAD
67 - gpmc,adv-aad-mux-rd-off-ns: Read deassertion time for AAD
68 - gpmc,adv-aad-mux-wr-off-ns: Write deassertion time for AAD
71 - gpmc,we-on-ns Assertion time
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| /Documentation/admin-guide/device-mapper/ |
| D | dm-service-time.rst | 2 dm-service-time
5 dm-service-time is a path selector module for device-mapper targets,
6 which selects a path with the shortest estimated service time for
9 The service time for each path is estimated by dividing the total size
14 The path selector name is 'service-time'.
49 dm-service-time adds the I/O size to 'in-flight-size' when the I/O is
51 Basically, dm-service-time selects a path having minimum service time
69 If such optimizations can't be applied, calculate service time, and
70 compare service time.
71 If calculated service time is equal, the path having maximum
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| /Documentation/fb/ |
| D | viafb.modes | 21 # Active Time 25.422 us 15.253 ms
23 # Blank Time 6.356 us 1.430 ms
46 # Active Time 20.317 us 12.800 ms
48 # Blank Time 6.349 us 0.533 ms
67 # Active Time 17.778 us 11.093 ms
69 # Blank Time 5.333 us 0.670 ms
88 # Active Time 14.827 us 9.430 ms
90 # Blank Time 4.819 us 0.570 ms
109 # Active Time 12.212 us 7.767 ms
111 # Blank Time 3.969 us 0.566 ms
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| /Documentation/virt/kvm/ |
| D | msr.txt | 34 time information and check that they are both equal and even.
37 sec: number of seconds for wallclock at time of boot.
39 nsec: number of nanoseconds for wallclock at time of boot.
41 In order to get the current wallclock time, the system_time from
70 The hypervisor may update this structure at any time it sees fit until
76 time information and check that they are both equal and even.
79 tsc_timestamp: the tsc value at the current VCPU at the time
81 from current tsc to derive a notion of elapsed time since the
84 system_time: a host notion of monotonic time, including sleep
85 time at the time this structure was last updated. Unit is
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| /Documentation/accounting/ |
| D | taskstats-struct.rst | 36 5) Time accounting for SMT machines
51 * Each time the struct is changed, the value should be incremented.
78 /* The time when a task begins, in [secs] since 1970. */
79 __u32 ac_btime; /* Begin time [sec since 1970] */
81 /* The elapsed time of a task, in [usec]. */
82 __u64 ac_etime; /* Elapsed time [usec] */
84 /* The user CPU time of a task, in [usec]. */
85 __u64 ac_utime; /* User CPU time [usec] */
87 /* The system CPU time of a task, in [usec]. */
88 __u64 ac_stime; /* System CPU time [usec] */
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| D | psi.rst | 17 such resource crunches and the time impact it has on complex workloads
47 The "some" line indicates the share of time in which at least some
50 The "full" line indicates the share of time in which all non-idle
53 extended time in this state is considered to be thrashing. This has
56 still doing productive work. As such, time spent in this subset of the
61 as well as medium and long term trends. The total absolute stall time
63 spikes which wouldn't necessarily make a dent in the time averages,
64 or to average trends over custom time frames.
72 A trigger describes the maximum cumulative stall time over a specific
73 time window, e.g. 100ms of total stall time within any 500ms window to
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| /Documentation/devicetree/bindings/i2c/ |
| D | i2c-designware.txt | 25 time, named ICPU_CFG:TWI_DELAY in the datasheet.
27 - i2c-sda-hold-time-ns : should contain the SDA hold time in nanoseconds.
31 - i2c-scl-falling-time-ns : should contain the SCL falling time in nanoseconds.
34 - i2c-sda-falling-time-ns : should contain the SDA falling time in nanoseconds.
56 i2c-sda-hold-time-ns = <300>;
57 i2c-sda-falling-time-ns = <300>;
58 i2c-scl-falling-time-ns = <300>;
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| /Documentation/devicetree/bindings/input/touchscreen/ |
| D | imx6ul_tsc.txt | 14 - measure-delay-time: the value of measure delay time.
15 Before X-axis or Y-axis measurement, the screen need some time before
18 - pre-charge-time: the touch screen need some time to precharge.
35 measure-delay-time = <0xfff>;
36 pre-charge-time = <0xffff>;
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| /Documentation/ABI/testing/ |
| D | procfs-diskstats | 15 7 - time spent reading (ms)
19 11 - time spent writing (ms)
21 13 - time spent doing I/Os (ms)
22 14 - weighted time spent doing I/Os (ms)
30 18 - time spent discarding
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| D | sysfs-class-wakeup | 6 wakeup sources in the kernel at that moment in time.
46 This file contains the amount of time the wakeup source has
54 This file contains the total amount of time this wakeup source
61 This file contains the maximum amount of time this wakeup
68 This file contains the monotonic clock time when the wakeup
69 source was touched last time, in milliseconds.
75 The file contains the total amount of time this wakeup source
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| D | rtc-cdev | 6 The ioctl interface to drivers for real-time clocks (RTCs).
9 * RTC_RD_TIME, RTC_SET_TIME: Read or set the RTC time. Time
11 time.
16 * RTC_ALM_READ, RTC_ALM_SET: Read or set the alarm time for
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| /Documentation/admin-guide/pm/ |
| D | cpuidle.rst | 8 CPU Idle Time Management
27 CPU idle time management is an energy-efficiency feature concerned about using
33 CPU idle time management operates on CPUs as seen by the *CPU scheduler* (that
43 program) at a time, it is a CPU. In that case, if the hardware is asked to
47 least one program at a time. The cores need not be entirely independent of each
48 other (for example, they may share caches), but still most of the time they
51 time. The entire cores are CPUs in that case and if the hardware is asked to
62 program in the same time frame (that is, each core may be able to fetch
63 instructions from multiple locations in memory and execute them in the same time
69 time management perspective and if the processor is asked to enter an idle state
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| /Documentation/core-api/ |
| D | timekeeping.rst | 4 Device drivers can read the current time using ktime_get() and the many
13 that return time for different clock references:
20 Useful for reliable timestamps and measuring short time intervals
21 accurately. Starts at system boot time but stops during suspend.
35 Returns the time in relative to the UNIX epoch starting in 1970
36 using the Coordinated Universal Time (UTC), same as gettimeofday()
47 Like ktime_get_real(), but uses the International Atomic Time (TAI)
62 For all of the above, there are variants that return the time in a
72 of nanoseconds in the respective time reference, which may be
81 Same above, but returns the time in a 'struct timespec64', split
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| /Documentation/driver-api/ |
| D | ptp.rst | 18 - Set time
19 - Get time
24 - Time stamp external events
26 - Synchronization of the Linux system time via the PPS subsystem
35 driver of asynchronous events (alarms and external time stamps) via
54 ancillary clock features. User space can receive time stamped
68 reentrant. Since most hardware implementations treat the time value
80 - 2 Time stamp external triggers, programmable polarity (opt. interrupt)
89 - GPIO inputs can time stamp external triggers
96 - Target Time (optional interrupt)
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| /Documentation/admin-guide/cgroup-v1/ |
| D | blkio-controller.rst | 133 - blkio.time
134 - disk time allocated to cgroup per device in milliseconds. First
136 third field specifies the disk time allocated to group in
160 - Total amount of time between request dispatch and request completion
163 this time represents the actual service time. When queue_depth > 1,
165 may cause the service time for a given IO to include the service time
167 io_service_time > actual time elapsed. This time is further divided by
174 - Total amount of time the IOs for this cgroup spent waiting in the
175 scheduler queues for service. This can be greater than the total time
177 measure of total time the cgroup spent waiting but rather a measure of
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| /Documentation/networking/ |
| D | timestamping.txt | 8 monotonic) system time. Reports the timestamp via recvmsg() in a
173 The counter starts at zero. It is initialized the first time that
174 the socket option is enabled. It is reset each time the option is
229 are enabled at the same time. If both timestamps are generated,
319 send time with the value returned for each timestamp. It can prevent
364 feature. At least one field is non-zero at any time. Most timestamps
367 ts[1] used to hold hardware timestamps converted to system time.
369 a HW PTP clock source, to allow time conversion in userspace and
370 optionally synchronize system time with a userspace PTP stack such
451 Hardware time stamping must also be initialized for each device driver
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| /Documentation/devicetree/bindings/sound/ |
| D | nau8824.txt | 47 - nuvoton,sar-compare-time: SAR compare time
53 - nuvoton,sar-sampling-time: SAR sampling time
59 - nuvoton,short-key-debounce: Button short key press debounce time.
64 - nuvoton,jack-eject-debounce: Jack ejection debounce time.
84 nuvoton,sar-compare-time = <1>;
85 nuvoton,sar-sampling-time = <1>;
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| /Documentation/admin-guide/ |
| D | rtc.rst | 2 Real Time Clock (RTC) Drivers for Linux
5 When Linux developers talk about a "Real Time Clock", they usually mean
6 something that tracks wall clock time and is battery backed so that it
8 the local time zone or daylight savings time -- unless they dual boot
9 with MS-Windows -- but will instead be set to Coordinated Universal Time
10 (UTC, formerly "Greenwich Mean Time").
12 The newest non-PC hardware tends to just count seconds, like the time(2)
13 system call reports, but RTCs also very commonly represent time using
14 the Gregorian calendar and 24 hour time, as reported by gmtime(3).
32 be able to schedule one any time in the upcoming century.
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| /Documentation/ia64/ |
| D | efirtc.rst | 2 EFI Real Time Clock driver
16 to get access to the Time Service offered by EFI version 0.92.
27 at first, the time of day service. This is required in order to access, in a
29 to initialize the system view of the time during boot.
38 EFI uses a slightly different way of representing the time, noticeably
41 expose this new way of representing time. Instead we use something very
52 To allow for a uniform interface between the legacy RTC and EFI time service,
58 3. Time of day service
61 The part of the driver gives access to the time of day service of EFI.
87 The driver takes care of converting back an forth between the EFI time and
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