sched/cputime, ia64: Fix incorrect start cputime assignment on task switch
authorFrederic Weisbecker <fweisbec@gmail.com>
Thu, 5 Jan 2017 17:11:42 +0000 (18:11 +0100)
committerIngo Molnar <mingo@kernel.org>
Sat, 14 Jan 2017 08:54:11 +0000 (09:54 +0100)
commit8388d21468e7e7656867b67ab2ec98a78c9ad799
treedfe53ceb2a437c8aa88fddf81f9cc439d468fa14
parent90d08ba2b9b4be4aeca6a5b5a4b09fbcde30194d
sched/cputime, ia64: Fix incorrect start cputime assignment on task switch

On task switch we must initialize the current cputime of the next task
using the value of the previous task which got freshly updated.

But we are confusing that with doing the opposite, which should result
in incorrect cputime accounting.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
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: Tony Luck <tony.luck@intel.com>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Link: http://lkml.kernel.org/r/1483636310-6557-3-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/ia64/kernel/time.c