diff options
| author | Frederic Weisbecker <fweisbec@gmail.com> | 2015-11-19 16:47:30 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-12-04 10:34:44 +0100 |
| commit | 7098c1eac75dc03fdbb7249171a6e68ce6044a5a (patch) | |
| tree | 06b4c828297c06b6aaa5494054a5cb9855e2d198 /include/linux/sched.h | |
| parent | 7877a0ba5ec63c7b0111b06c773f1696fa17b35a (diff) | |
| download | op-kernel-dev-7098c1eac75dc03fdbb7249171a6e68ce6044a5a.zip op-kernel-dev-7098c1eac75dc03fdbb7249171a6e68ce6044a5a.tar.gz | |
sched/cputime: Clarify vtime symbols and document them
VTIME_SLEEPING state happens either when:
1) The task is sleeping and no tickless delta is to be added on the task
cputime stats.
2) The CPU isn't running vtime at all, so the same properties of 1) applies.
Lets rename the vtime symbol to reflect both states.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luiz Capitulino <lcapitulino@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul E . McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1447948054-28668-4-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index f425aac..3533168 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1522,8 +1522,11 @@ struct task_struct { seqlock_t vtime_seqlock; unsigned long long vtime_snap; enum { - VTIME_SLEEPING = 0, + /* Task is sleeping or running in a CPU with VTIME inactive */ + VTIME_INACTIVE = 0, + /* Task runs in userspace in a CPU with VTIME active */ VTIME_USER, + /* Task runs in kernelspace in a CPU with VTIME active */ VTIME_SYS, } vtime_snap_whence; #endif |
