179bf2bb3SThomas Gleixner# 279bf2bb3SThomas Gleixner# Timer subsystem related configuration options 379bf2bb3SThomas Gleixner# 43872c48bSThomas Gleixner 53872c48bSThomas Gleixner# Core internal switch. Selected by NO_HZ / HIGH_RES_TIMERS. This is 63872c48bSThomas Gleixner# only related to the tick functionality. Oneshot clockevent devices 73872c48bSThomas Gleixner# are supported independ of this. 879bf2bb3SThomas Gleixnerconfig TICK_ONESHOT 979bf2bb3SThomas Gleixner bool 1079bf2bb3SThomas Gleixner 1179bf2bb3SThomas Gleixnerconfig NO_HZ 1279bf2bb3SThomas Gleixner bool "Tickless System (Dynamic Ticks)" 13592913ecSJohn Stultz depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS 1479bf2bb3SThomas Gleixner select TICK_ONESHOT 1579bf2bb3SThomas Gleixner help 1679bf2bb3SThomas Gleixner This option enables a tickless system: timer interrupts will 1779bf2bb3SThomas Gleixner only trigger on an as-needed basis both when the system is 1879bf2bb3SThomas Gleixner busy and when the system is idle. 1954cdfdb4SThomas Gleixner 2054cdfdb4SThomas Gleixnerconfig HIGH_RES_TIMERS 2154cdfdb4SThomas Gleixner bool "High Resolution Timer Support" 22592913ecSJohn Stultz depends on !ARCH_USES_GETTIMEOFFSET && GENERIC_CLOCKEVENTS 2354cdfdb4SThomas Gleixner select TICK_ONESHOT 2454cdfdb4SThomas Gleixner help 2554cdfdb4SThomas Gleixner This option enables high resolution timer support. If your 2654cdfdb4SThomas Gleixner hardware is not capable then this option only increases 2754cdfdb4SThomas Gleixner the size of the kernel image. 2854cdfdb4SThomas Gleixner 29de68d9b1SThomas Gleixnerconfig GENERIC_CLOCKEVENTS_BUILD 30de68d9b1SThomas Gleixner bool 31de68d9b1SThomas Gleixner default y 32a13b0327SPaul Bolle depends on GENERIC_CLOCKEVENTS 33de68d9b1SThomas Gleixner 34d1748302SMartin Schwidefskyconfig GENERIC_CLOCKEVENTS_MIN_ADJUST 35d1748302SMartin Schwidefsky bool 36