Re: [PATCH][2.6.7-mm5] perfctr low-level documentation

[Mikael Pettersson]

On Fri, 2 Jul 2004 15:44:14 -0700, Andrew Morton wrote:
>Mikael Pettersson <mikpe@xxxxxxxxx> wrote:
>>
>> I'm
>> considering Christoph Hellwig's suggestion of moving
>> the API back to /proc/<pid>/, but with multiple files
>> and open/read/write/mmap instead of ioctl. I believe I
>> can make that work, but it would take a couple of days
>> to implement properly. Please indicate if you would like
>> this change or not.
>
>What would be the advantages of such a change?

Eliminating the 6 or so new syscalls I was forced
to add when nuking the old ioctl() API.

There would be a /proc/<pid>/<tid>/perfctr/ directory
with files representing the control data, counter
state, general info, and auxiliary control ops.

/Mikael
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