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authorFrederic Weisbecker <fweisbec@gmail.com>2013-07-13 17:24:20 +0200
committerFrederic Weisbecker <fweisbec@gmail.com>2013-08-14 17:14:55 +0200
commitb854fafa4e06c50a92e00b39d75ee62083d986d6 (patch)
tree46dbf41c4842d237d9c93ad24ef2ad1d7373f60e /kernel
parentb04934061330a4a449cfce703c97d887c3e11cd7 (diff)
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vtime: Always scale generic vtime accounting results
The cputime accounting in full dynticks can be a subtle mixup of CPUs using tick based accounting and others using generic vtime. As long as the tick can have a share on producing these stats, we want to scale the result against CFS precise accounting as the tick can miss some task hiding between the periodic interrupt. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Kevin Hilman <khilman@linaro.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched/cputime.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index 0831b06aab97..e9e742ed7280 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -553,12 +553,6 @@ static void cputime_adjust(struct task_cputime *curr,
{
cputime_t rtime, stime, utime, total;
- if (vtime_accounting_enabled()) {
- *ut = curr->utime;
- *st = curr->stime;
- return;
- }
-
stime = curr->stime;
total = stime + curr->utime;