函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\apic\io_apic.c Create Date:2022-07-27 09:29:41
Last Modify:2020-03-16 21:24:45 Copyright©Brick
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函数名称：delay_with_tsc

函数原型：static void __init delay_with_tsc(void)

返回类型：void

参数：无

1589  end等于jiffies加4
1591  start等于dtsc() - returns the current TSC without ordering constraints* rdtsc() returns the result of RDTSC as a 64-bit integer
1599  循环
1600  REP NOP (PAUSE) is a good thing to insert into busy-wait loops.
1601  now等于dtsc() - returns the current TSC without ordering constraints* rdtsc() returns the result of RDTSC as a 64-bit integer
1602  当now减start小于40000000000ULL除HZ且time_before_eq(jiffies, end)循环
调用者
名称描述
timer_irq_worksThere is a nasty bug in some older SMP boards, their mptable lies* about the timer IRQ