qemu/migration/cpu-throttle.c

4  * Copyright (c) 2003-2008 Fabrice Bellard
28 #include "qemu/main-loop.h"
30 #include "sysemu/cpu-throttle.h"
32 #include "migration-stats.h"
45 /* Making sure RAMBlock dirty bitmap is synchronized every five seconds */
59     throttle_ratio = pct / (1 - pct);  in cpu_throttle_thread()
63     while (sleeptime_ns > 0 && !cpu->stop) {  in cpu_throttle_thread()
65             qemu_cond_timedwait_bql(cpu->halt_cond,  in cpu_throttle_thread()
72         sleeptime_ns = endtime_ns - qemu_clock_get_ns(QEMU_CLOCK_REALTIME);  in cpu_throttle_thread()
74     qatomic_set(&cpu->throttle_thread_scheduled, 0);  in cpu_throttle_thread()
87         if (!qatomic_xchg(&cpu->throttle_thread_scheduled, 1)) {  in cpu_throttle_timer_tick()
95                                    CPU_THROTTLE_TIMESLICE_NS / (1 - pct));  in cpu_throttle_timer_tick()
175              * Always reset the dirty sync count cache, in case migration  in cpu_throttle_dirty_sync_timer()