sched/cputime: Convert task/group cputime to nsecs
authorFrederic Weisbecker <fweisbec@gmail.com>
Tue, 31 Jan 2017 03:09:23 +0000 (04:09 +0100)
committerIngo Molnar <mingo@kernel.org>
Wed, 1 Feb 2017 08:13:49 +0000 (09:13 +0100)
commit5613fda9a503cd6137b120298902a34a1386b2c1
tree5431dd50508a6cfa052a3b9966e58842b430804d
parenta1cecf2ba78e0a6de00ff99df34b662728535aa5
sched/cputime: Convert task/group cputime to nsecs

Now that most cputime readers use the transition API which return the
task cputime in old style cputime_t, we can safely store the cputime in
nsecs. This will eventually make cputime statistics less opaque and more
granular. Back and forth convertions between cputime_t and nsecs in order
to deal with cputime_t random granularity won't be needed anymore.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Link: http://lkml.kernel.org/r/1485832191-26889-8-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 files changed:
arch/alpha/kernel/osf_sys.c
arch/powerpc/kernel/time.c
arch/s390/kernel/vtime.c
arch/x86/kvm/hyperv.c
fs/binfmt_elf.c
fs/binfmt_elf_fdpic.c
fs/proc/array.c
include/linux/sched.h
kernel/exit.c
kernel/sched/cputime.c
kernel/signal.c
kernel/sys.c