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sched/cputime: Introduce special task_cputime_t() API to return old-typed cputime

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This API returns a task's cputime in cputime_t in order to ease the
conversion of cputime internals to use nsecs units instead. Blindly
converting all cputime readers to use this API now will later let us
convert more smoothly and step by step all these places to use the
new nsec based cputime.

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/1485832191-26889-7-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Frederic Weisbecker 2017-01-31 04:09:22 +01:00 • committed by Ingo Molnar
parent 16a6d9be90
commit a1cecf2ba7
12 changed files with 70 additions and 44 deletions
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2
kernel/time/itimer.c
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@ -53,7 +53,7 @@ static void get_cpu_itimer(struct task_struct *tsk, unsigned int clock_id,
cval = it->expires;
cinterval = it->incr;
if (cval) {
struct task_cputime cputime;
struct task_cputime_t cputime;
cputime_t t;
thread_group_cputimer(tsk, &cputime);