函数名称:jiffies_to_usecs 函数原型:unsigned int jiffies_to_usecs(const unsigned long j) 返回类型:unsigned int 参数: 类型参数名称 const unsigned long j 397BUILD_BUG_ON - break compile if a condition is true(HZ > USEC_PER_SEC) 400 返回:USEC_PER_SEC除HZ乘j 调用...
414 如果u大于jiffies_to_usecs(Change timeval to jiffies, trying to avoid the* most obvious overflows)则返回:Change timeval to jiffies, trying to avoid the* most obvious overflows 416 返回:_usecs_to_jiffies(u) 417 否则418 返回:__usecs_to_jiffies(u) ...