taskstats scaled time cleanup
authorMichael Neuling <mikey@neuling.org>
Wed, 6 Feb 2008 09:36:12 +0000 (01:36 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Wed, 6 Feb 2008 18:41:00 +0000 (10:41 -0800)
commit06b8e878a9bc9301201cffe186eba99c4185f20a
tree857434ed559cdb001177e81283be6f0b5693a781
parentd9afa43532adf8a31b93c4c7601fda3f423d8972
taskstats scaled time cleanup

This moves the ability to scale cputime into generic code.  This allows us
to fix the issue in kernel/timer.c (noticed by Balbir) where we could only
add an unscaled value to the scaled utime/stime.

This adds a cputime_to_scaled function.  As before, the POWERPC version
does the scaling based on the last SPURR/PURR ratio calculated.  The
generic and s390 (only other arch to implement asm/cputime.h) versions are
both NOPs.

Also moves the SPURR and PURR snapshots closer.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Cc: Jay Lan <jlan@engr.sgi.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/powerpc/kernel/time.c
include/asm-generic/cputime.h
include/asm-powerpc/cputime.h
include/asm-powerpc/paca.h
include/asm-s390/cputime.h
kernel/timer.c