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1 | # |
2 | # Timer subsystem related configuration options |
3 | # |
4 | |
5 | # Options selectable by arch Kconfig |
6 | |
7 | # Watchdog function for clocksources to detect instabilities |
8 | config CLOCKSOURCE_WATCHDOG |
9 | bool |
10 | |
11 | # Architecture has extra clocksource data |
12 | config ARCH_CLOCKSOURCE_DATA |
13 | bool |
14 | |
15 | # Timekeeping vsyscall support |
16 | config GENERIC_TIME_VSYSCALL |
17 | bool |
18 | |
19 | # ktime_t scalar 64bit nsec representation |
20 | config KTIME_SCALAR |
21 | bool |
22 | |
23 | # Old style timekeeping |
24 | config ARCH_USES_GETTIMEOFFSET |
25 | bool |
26 | |
27 | # The generic clock events infrastructure |
28 | config GENERIC_CLOCKEVENTS |
29 | bool |
30 | |
31 | # Migration helper. Builds, but does not invoke |
32 | config GENERIC_CLOCKEVENTS_BUILD |
33 | bool |
34 | default y |
35 | depends on GENERIC_CLOCKEVENTS |
36 | |
37 | # Clockevents broadcasting infrastructure |
38 | config GENERIC_CLOCKEVENTS_BROADCAST |
39 | bool |
40 | depends on GENERIC_CLOCKEVENTS |
41 | |
42 | # Automatically adjust the min. reprogramming time for |
43 | # clock event device |
44 | config GENERIC_CLOCKEVENTS_MIN_ADJUST |
45 | bool |
46 | |
47 | # Generic update of CMOS clock |
48 | config GENERIC_CMOS_UPDATE |
49 | bool |
50 | |
51 | if GENERIC_CLOCKEVENTS |
52 | menu "Timers subsystem" |
53 | |
54 | # Core internal switch. Selected by NO_HZ / HIGH_RES_TIMERS. This is |
55 | # only related to the tick functionality. Oneshot clockevent devices |
56 | # are supported independ of this. |
57 | config TICK_ONESHOT |
58 | bool |
59 | |
60 | config NO_HZ |
61 | bool "Tickless System (Dynamic Ticks)" |
62 | depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS |
63 | select TICK_ONESHOT |
64 | help |
65 | This option enables a tickless system: timer interrupts will |
66 | only trigger on an as-needed basis both when the system is |
67 | busy and when the system is idle. |
68 | |
69 | config HIGH_RES_TIMERS |
70 | bool "High Resolution Timer Support" |
71 | depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS |
72 | select TICK_ONESHOT |
73 | help |
74 | This option enables high resolution timer support. If your |
75 | hardware is not capable then this option only increases |
76 | the size of the kernel image. |
77 | |
78 | endmenu |
79 | endif |
80 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9