| commit | 43365bd7ff37979d2afdccbe953299ed64a4649b | |
| author | Paul Turner <pjt@google.com> | |
| Thu, 16 Dec 2010 03:10:17 +0000 (15 19:10 -0800) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Sun, 19 Dec 2010 15:36:22 +0000 (19 16:36 +0100) | ||
| tree | b90aa8813d0f92cae88bc26604e48dea0ee9f87d | treesnapshot (tar.gz zip) |
| parent | ca680888d5d0d03862ec311a83c6a1c7a1e00a01 | commitdiff |
sched: Move periodic share updates to entity_tick()
Long running entities that do not block (dequeue) require periodic updates to
maintain accurate share values. (Note: group entities with several threads are
quite likely to be non-blocking in many circumstances).
By virtue of being long-running however, we will see entity ticks (otherwise
the required update occurs in dequeue/put and we are done). Thus we can move
the detection (and associated work) for these updates into the periodic path.
This restores the 'atomicity' of update_curr() with respect to accounting.
Signed-off-by: Paul Turner <pjt@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20101216031038.067028969@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Long running entities that do not block (dequeue) require periodic updates to
maintain accurate share values. (Note: group entities with several threads are
quite likely to be non-blocking in many circumstances).
By virtue of being long-running however, we will see entity ticks (otherwise
the required update occurs in dequeue/put and we are done). Thus we can move
the detection (and associated work) for these updates into the periodic path.
This restores the 'atomicity' of update_curr() with respect to accounting.
Signed-off-by: Paul Turner <pjt@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20101216031038.067028969@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| kernel/sched_fair.c | diffblobblamehistory |