cvs commit: src/sys/compat/linprocfs linprocfs.c src/sys/kern kern_clock.c src/sys/sys pcpu.h resource.h

[Attilio Rao]

2007/11/29, Peter Wemm <peter at freebsd.org>:
> peter       2007-11-29 06:34:30 UTC
>
>   FreeBSD src repository
>
>   Modified files:
>     sys/compat/linprocfs linprocfs.c
>     sys/kern             kern_clock.c
>     sys/sys              pcpu.h resource.h
>   Log:
>   Move the shared cp_time array (counts %sys, %user, %idle etc) to the
>   per-cpu area.  cp_time[] goes away and a new function creates a merged
>   cp_time-like array for things like linprocfs, sysctl etc.  The
>   atomic ops for updating cp_time[] in statclock go away, and the scope
>   of the thread lock is reduced.
>
>   sysctl kern.cp_time returns a backwards compatible cp_time[] array.
>   A new kern.cp_times sysctl returns the individual per-cpu stats.
>
>   I have pending changes to make top and vmstat optionally show per-cpu
>   stats.
>
>   I'm very aware that there are something like 5 or 6 other versions "out
>   there" for doing this - but none were handy when I needed them.
>
>   I did merge my changes with John Baldwin's, and ended up replacing a
>   few chunks of my stuff with his, and stealing some other code.
>
>   Reviewed by:  jhb
>   Partly obtained from:  jhb

Thanks guys.

Attilio

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