我也来个愚的问题
static void update_avg(u64 *avg, u64 sample)
{
s64 diff = sample - *avg;
*avg += diff >> 3;
}

*avg += diff >> 3;为什么呢？？


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什么为什么， 楼主说清楚噻
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探讨

diff >> 3
为什么要右移动3位？？