| /linux/Documentation/virt/kvm/ |
| H A D | halt-polling.rst | 4 The KVM halt polling system
7 The KVM halt polling system provides a feature within KVM whereby the latency
8 of a guest can, under some circumstances, be reduced by polling in the host
14 Polling provides a latency advantage in cases where the guest can be run again
17 dependent. In the event that no wakeup source arrives during the polling
19 invoked. Thus halt polling is especially useful on workloads with very short
20 wakeup periods where the time spent halt polling is minimised and the time
23 The generic halt polling code is implemented in:
31 Halt Polling Interval
35 as the halt polling interval, is increased and decreased based on the perceived
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| /linux/arch/arm64/boot/dts/ti/ |
| H A D | k3-j721s2-thermal.dtsi | 9 polling-delay-passive = <250>; /* milliseconds */
10 polling-delay = <500>; /* milliseconds */
23 polling-delay-passive = <250>; /* milliseconds */
24 polling-delay = <500>; /* milliseconds */
37 polling-delay-passive = <250>; /* milliseconds */
38 polling-delay = <500>; /* milliseconds */
51 polling-delay-passive = <250>; /* milliseconds */
52 polling-delay = <500>; /* milliseconds */
65 polling-delay-passive = <250>; /* milliseconds */
66 polling-delay = <500>; /* milliseconds */
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| H A D | k3-j721e-thermal.dtsi | 10 polling-delay-passive = <250>; /* milliseconds */
11 polling-delay = <500>; /* milliseconds */
24 polling-delay-passive = <250>; /* milliseconds */
25 polling-delay = <500>; /* milliseconds */
38 polling-delay-passive = <250>; /* milliseconds */
39 polling-delay = <500>; /* milliseconds */
52 polling-delay-passive = <250>; /* milliseconds */
53 polling-delay = <500>; /* milliseconds */
66 polling-delay-passive = <250>; /* milliseconds */
67 polling-delay = <500>; /* milliseconds */
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| H A D | k3-am654-industrial-thermal.dtsi | 9 polling-delay-passive = <250>; /* milliseconds */
10 polling-delay = <500>; /* milliseconds */
23 polling-delay-passive = <250>; /* milliseconds */
24 polling-delay = <500>; /* milliseconds */
37 polling-delay-passive = <250>; /* milliseconds */
38 polling-delay = <500>; /* milliseconds */
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| H A D | k3-am62a-thermal.dtsi | 10 polling-delay-passive = <250>; /* milliSeconds */
11 polling-delay = <500>; /* milliSeconds */
24 polling-delay-passive = <250>; /* milliSeconds */
25 polling-delay = <500>; /* milliSeconds */
38 polling-delay-passive = <250>; /* milliSeconds */
39 polling-delay = <500>; /* milliSeconds */
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| H A D | k3-j7200-thermal.dtsi | 10 polling-delay-passive = <250>; /* milliseconds */
11 polling-delay = <500>; /* milliseconds */
24 polling-delay-passive = <250>; /* milliseconds */
25 polling-delay = <500>; /* milliseconds */
38 polling-delay-passive = <250>; /* milliseconds */
39 polling-delay = <500>; /* milliseconds */
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| H A D | k3-am62p-j722s-common-thermal.dtsi | 10 polling-delay-passive = <250>; /* milliSeconds */
11 polling-delay = <500>; /* milliSeconds */
24 polling-delay-passive = <250>; /* milliSeconds */
25 polling-delay = <500>; /* milliSeconds */
38 polling-delay-passive = <250>; /* milliSeconds */
39 polling-delay = <500>; /* milliSeconds */
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| H A D | k3-am64-thermal.dtsi | 10 polling-delay-passive = <250>; /* milliSeconds */
11 polling-delay = <500>; /* milliSeconds */
24 polling-delay-passive = <250>; /* milliSeconds */
25 polling-delay = <500>; /* milliSeconds */
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| H A D | k3-am62-thermal.dtsi | 10 polling-delay-passive = <250>; /* milliSeconds */
11 polling-delay = <500>; /* milliSeconds */
41 polling-delay-passive = <250>; /* milliSeconds */
42 polling-delay = <500>; /* milliSeconds */
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| /linux/Documentation/devicetree/bindings/thermal/ |
| H A D | brcm,sr-thermal.txt | 11 - polling-delay: Max number of milliseconds to wait between polls.
34 polling-delay-passive = <0>;
35 polling-delay = <1000>;
46 polling-delay-passive = <0>;
47 polling-delay = <1000>;
58 polling-delay-passive = <0>;
59 polling-delay = <1000>;
70 polling-delay-passive = <0>;
71 polling-delay = <1000>;
82 polling-delay-passive = <0>;
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| H A D | thermal-zones.yaml | 27 The polling-delay properties of a thermal-zone are bound to the maximum dT/dt
29 1. when passive cooling is activated (polling-delay-passive)
30 2. when the zone just needs to be monitored (polling-delay) or when
36 unexpectedly between polls. Choosing the right polling delays shall avoid
64 polling-delay:
68 checking this thermal zone. Setting this to 0 disables the polling
72 polling-delay-passive:
77 this to 0 disables the polling timers setup by the thermal
279 polling-delay-passive = <250>;
280 polling-delay = <1000>;
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| /linux/Documentation/networking/ |
| H A D | napi.rst | 16 interrupts first (:ref:`busy polling<poll>`).
121 the NAPI instance - until NAPI polling finishes any further
155 mapped to queues and interrupts. NAPI is primarily a polling/processing
224 Busy polling
227 Busy polling allows a user process to check for incoming packets before
228 the device interrupt fires. As is the case with any busy polling it trades
229 off CPU cycles for lower latency (production uses of NAPI busy polling
232 Busy polling is enabled by either setting ``SO_BUSY_POLL`` on
234 ``net.core.busy_read`` sysctls. An io_uring API for NAPI busy polling
237 epoll-based busy polling
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| H A D | nfc.rst | 16 - Polling for targets;
63 * stop_poll - stop on progress polling operation
80 * NFC_CMD_START_POLL - setup a specific device to polling for targets
81 * NFC_CMD_STOP_POLL - stop the polling operation in a specific device
90 protocols through NFC_ATTR_PROTOCOLS attribute. The device remains in polling
91 state until it finds any target. However, the user can stop the polling
95 If the polling operation finds one or more targets, the event TARGETS_FOUND is
100 All polling operations requested through one netlink socket are stopped when
|
| /linux/Documentation/virt/ |
| H A D | guest-halt-polling.rst | 2 Guest halt polling
9 This provides the following benefits to host side polling:
11 1) The POLL flag is set while polling is performed, which allows
17 The downside of guest side polling is that polling is performed
22 time polling is allowed. This value is fixed.
35 Maximum amount of time, in nanoseconds, that polling is
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| /linux/drivers/media/pci/saa7134/ |
| H A D | saa7134-input.c | 62 if (ir->polling) { in build_key()
82 if (ir->polling) { in build_key()
425 if (!ir->polling && !ir->raw_decode) { in saa7134_input_irq()
438 mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling)); in saa7134_input_timer()
484 if (ir->polling) { in saa7134_ir_open()
498 if (ir->polling) in saa7134_ir_close()
512 unsigned polling = 0; in saa7134_input_init1() local
544 polling = 50; // ms in saa7134_input_init1()
551 polling = 50; // ms in saa7134_input_init1()
569 polling = 50; // ms in saa7134_input_init1()
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| /linux/drivers/media/pci/cx88/ |
| H A D | cx88-input.c | 39 int polling; member
107 if (ir->polling) { in cx88_ir_handle_key()
117 ir->polling ? "poll" : "irq", in cx88_ir_handle_key()
175 ktime_set(0, ir->polling * 1000000)); in cx88_ir_work()
192 if (ir->polling) { in __cx88_ir_start()
196 ktime_set(0, ir->polling * 1000000), in __cx88_ir_start()
221 if (ir->polling) in __cx88_ir_stop()
287 ir->polling = 50; /* ms */ in cx88_ir_init()
316 ir->polling = 50; /* ms */ in cx88_ir_init()
327 ir->polling = 1; /* ms */ in cx88_ir_init()
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| /linux/drivers/gpu/drm/ |
| H A D | drm_probe_helper.c | 55 * It also provides support for polling connectors with a work item and for
287 * drm_kms_helper_poll_enable - re-enable output polling.
290 * This function re-enables the output polling work, after it has been
295 * not an error to call this even when output polling isn't enabled.
297 * If device polling was never initialized before, this call will trigger a
300 * Note that calls to enable and disable polling must be strictly ordered, which
319 * drm_kms_helper_poll_reschedule - reschedule the output polling work
322 * This function reschedules the output polling work, after polling for a
325 * Drivers must call this helper after enabling polling for a connector by
327 * in drm_connector::polled. Note that after disabling polling by clearing these
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| /linux/drivers/media/pci/bt8xx/ |
| H A D | bttv-input.c | 47 if (ir->polling) { in ir_handle_key()
57 ir->polling ? "poll" : "irq", in ir_handle_key()
123 else if (!ir->polling) in bttv_input_irq()
136 mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling)); in bttv_input_timer()
292 if (ir->polling) { in bttv_ir_start()
306 if (btv->remote->polling) in bttv_ir_stop()
432 ir->polling = 50; // ms in bttv_input_init()
440 ir->polling = 50; // ms in bttv_input_init()
447 ir->polling = 50; // ms in bttv_input_init()
455 ir->polling = 50; // ms in bttv_input_init()
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| /linux/arch/arm64/boot/dts/exynos/ |
| H A D | exynos5433-tmu.dtsi | 14 polling-delay-passive = <0>;
15 polling-delay = <0>;
102 polling-delay-passive = <0>;
103 polling-delay = <0>;
145 polling-delay-passive = <0>;
146 polling-delay = <0>;
188 polling-delay-passive = <0>;
189 polling-delay = <0>;
264 polling-delay-passive = <0>;
265 polling-delay = <0>;
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| /linux/arch/mips/include/asm/ |
| H A D | i8259.h | 42 * i8159_set_poll() - Override the i8259 polling function
43 * @poll: pointer to platform-specific polling function
45 * Call this to override the generic i8259 polling function, which directly
47 * in cases where hardware provides a more optimal means of polling for an
53 * Do the traditional i8259 interrupt polling thing. This is for the few
|
| /linux/kernel/sched/ |
| H A D | idle.c | 163 * On architectures that support TIF_POLLING_NRFLAG, is called with polling
164 * set, and it returns with polling set. If it ever stops polling, it
165 * must clear the polling bit.
250 * Called with polling cleared.
262 * If the arch has a polling bit, we maintain an invariant: in do_idle()
264 * Our polling bit is clear if we're not scheduled (i.e. if rq->curr != in do_idle()
265 * rq->idle). This means that, if rq->idle has the polling bit set, in do_idle()
334 * This is required because for polling idle loops we will not have had in do_idle()
343 * need_resched() is set while polling is set. That means that clearing in do_idle()
344 * polling needs to be visible before doing these things. in do_idle()
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| /linux/Documentation/ABI/testing/ |
| H A D | sysfs-mce | 48 (poll more often) on the polling interval. When the poller
50 (poll less often) on the polling interval. The check_interval
51 variable is both the initial and maximum polling interval.
52 0 means no polling for corrected machine check errors
80 Disables polling and CMCI for corrected errors.
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| /linux/arch/arm64/boot/dts/marvell/ |
| H A D | armada-ap80x.dtsi | 320 polling-delay-passive = <0>; /* Interrupt driven */
321 polling-delay = <0>; /* Interrupt driven */
337 polling-delay-passive = <1000>;
338 polling-delay = <1000>;
370 polling-delay-passive = <1000>;
371 polling-delay = <1000>;
403 polling-delay-passive = <1000>;
404 polling-delay = <1000>;
436 polling-delay-passive = <1000>;
437 polling-delay = <1000>;
|
| /linux/include/linux/sched/ |
| H A D | idle.h | 22 * polling state.
61 * Polling state must be visible before we test NEED_RESCHED, in current_set_polling_and_test()
74 * Polling state must be visible before we test NEED_RESCHED, in current_clr_polling_and_test()
101 * Ensure we check TIF_NEED_RESCHED after we clear the polling bit. in current_clr_polling()
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| /linux/net/nfc/ |
| H A D | core.c | 155 if (dev->polling || dev->active_target) { in nfc_dev_down()
189 * nfc_start_poll - start polling for nfc targets
191 * @dev: The nfc device that must start polling
192 * @im_protocols: bitset of nfc initiator protocols to be used for polling
193 * @tm_protocols: bitset of nfc transport protocols to be used for polling
195 * The device remains polling for targets until a target is found or
220 if (dev->polling) { in nfc_start_poll()
227 dev->polling = true; in nfc_start_poll()
237 * nfc_stop_poll - stop polling for nfc targets
239 * @dev: The nfc device that must stop polling
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