[openib-general][RFC][PATCH] core/sysfs.c: ability to reset port counters

[Hal Rosenstock]

On Tue, 2006-05-09 at 12:29, Roland Dreier wrote:
>     Leonid>      we need a possibility to reset the port counters in
>     Leonid> /sys/class/infiniband/mthca0/ports/1/counters/.
> 
> Why do you need this possibility?  Having counters reset locally is
> going to confuse any performance manager running on the fabric that
> might be reading the counters remotely.
> 
> Is it really a must for this to be done by writing to sysfs?  Couldn't
> a trivial userspace app send a MAD locally to reset them?

In fact, there already is one which can do this (perfquery).

-- Hal

> 
>  - R.
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