Re: [PATCH] [1/4] x86: MCE: Make polling timer interval per CPU

[Hidetoshi Seto]

Andi Kleen wrote:
>>> +	if (!*n)
>>> +		*n = check_interval * HZ;
>>> +	if (!*n)
>>>  		return;
> 
> The !*n will return for check_interval == 0 because 0*HZ is still 0 so it should be 
> equivalent. Did I miss something?

At First, *n is 0 on boot.
And then soon it will be initialized to non-zero (check_interval * HZ)
by the first if-statement.

After that if check_interval is changed via sysfs while *n is non-zero,
which if-statement runs?


Thanks,
H.Seto
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