函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\hpet.c Create Date:2022-07-27 09:42:05
Last Modify:2020-03-16 21:38:50 Copyright©Brick
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函数名称：hpet_clkevt_set_next_event

函数原型：static int hpet_clkevt_set_next_event(unsigned long delta, struct clock_event_device *evt)

返回类型：int

参数：

类型参数名称
unsigned longdelta
struct clock_event_device *evt
361  channel等于num
365  cnt等于hpet_readl(HPET_COUNTER)
366  cnt加等于delta
367  hpet_writel(cnt, HPET_Tn_CMP(channel))
391  res等于cnt减hpet_readl(HPET_COUNTER)
393  返回:如果res小于HPET_MIN_CYCLES则负ETIME否则0