Re: [Perfctr-devel] perfctr and Linus' tree?

Mikael Pettersson
2003-03-07T13:20:07Z

Hiro Yoshioka writes:
> I have a question. Is there any progress on merging the
> perfctr patch to Linus' kernel tree?
>
> http://www.uwsg.iu.edu/hypermail/linux/kernel/0303.0/0647.html
>
> I found the DCL patch set includes the perfctr patch.
> http://lists.osdl.org/pipermail/dcl_developer/2003-March/000009.html

No progress since Linus totally ignored it, but at least two
perfctr-patched trees exist. OSDL does one for the development
kernel, and Jack Perdue has pre-patched RedHat kernel .rpms.
(For Jack's stuff, check out PAPI -> Links -> Related Software.)

I'm planning to simplify the kernel <--> user-space interface in
perfctr-2.6 (drop /proc/pid/perfctr and go back to /dev/perfctr),
and then I _think_ I can do a version that doesn't require patching
kernel source. (It will do binary code patching at module load-time
instead. Horrible as that sounds, it's easier to deal with for users.)

/Mikael