Re: [PATCH] [1/4] x86: MCE: Make polling timer interval per CPU
From: Hidetoshi Seto
Date: Wed Apr 08 2009 - 07:54:58 EST
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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