drivers/clocksource/hyperv_timer.c

4  * Clocksource driver for the synthetic counter and timers
17 #include <linux/clocksource.h>
26 #include <clocksource/hyperv_timer.h>
44  * interrupts are enabled for other clocksource drivers.
149 	 * as a better clocksource and it's challenging to mark the Hyper-V  in hv_stimer_init()
333 	 * clocksource driver just to set the sint in the legacy case.  in hv_stimer_legacy_init()
442 static u64 notrace read_hv_clock_tsc_cs(struct clocksource *arg)  in read_hv_clock_tsc_cs()
453 static void suspend_hv_clock_tsc(struct clocksource *arg)  in suspend_hv_clock_tsc()
464 static void resume_hv_clock_tsc(struct clocksource *arg)  in resume_hv_clock_tsc()
487 static int hv_cs_enable(struct clocksource *cs)  in hv_cs_enable()
494 static struct clocksource hyperv_cs_tsc = {
510 static u64 notrace read_hv_clock_msr_cs(struct clocksource *arg)  in read_hv_clock_msr_cs()
515 static struct clocksource hyperv_cs_msr = {
589 	 * It worth mentioning, that TSC clocksource read function  in hv_init_tsc_clocksource()
592 	 * thus TSC clocksource will work even without the real TSC page  in hv_init_tsc_clocksource()
621 	 * Try to set up the TSC page clocksource, then the MSR clocksource.  in hv_init_clocksource()
624 	 * clocksource, but Linux will still run with a clocksource based  in hv_init_clocksource()
627 	 * Never use the MSR clocksource as sched clock.  It's too slow.  in hv_init_clocksource()