cvs commit: src/sys/compat/linprocfs linprocfs.c src/sys/kern kern_clock.c src/sys/sys pcpu.h resource.h
peter 2007-11-29 06:34:30 UTC
FreeBSD src repository
sys/sys pcpu.h resource.h
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
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
Revision Changes Path
1.117 +16 -5 src/sys/compat/linprocfs/linprocfs.c
1.204 +72 -9 src/sys/kern/kern_clock.c
1.24 +2 -0 src/sys/sys/pcpu.h
1.32 +1 -1 src/sys/sys/resource.h
Received on Thu Nov 29 2007 - 06:34:30 UTC