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Code Issues Releases Wiki Activity

更改HPET的定时间隔为500us

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fslongjin
2022-07-12 09:39:35 +08:00
parent defb9e769c
commit 4208c56074
3 changed files with 6 additions and 4 deletions
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kernel/time/timer.h
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@ -7,7 +7,9 @@
uint64_t volatile timer_jiffies = 0; // 系统时钟计数
// 计算接下来n毫秒对应的系统时间片
#define cal_next_n_ms_jiffies(expire_ms) (timer_jiffies + expire_ms / 5 + ((expire_ms % HPET0_INTERVAL) ? 1 : 0))
#define cal_next_n_ms_jiffies(expire_ms) (timer_jiffies + 1000*expire_ms / HPET0_INTERVAL + ((1000*expire_ms % HPET0_INTERVAL) ? 1 : 0))
// 计算接下来n微秒对应的系统时间片
#define cal_next_n_us_jiffies(expire_us) (timer_jiffies + expire_us / HPET0_INTERVAL + ((expire_us % HPET0_INTERVAL) ? 1 : 0))
void timer_init();