| commit | 743cb1ff191f00fee653212bdbcee1e56086d6ce | |
| author | Peter Zijlstra <peterz@infradead.org> | |
| Tue, 29 Jul 2014 15:00:21 +0000 (29 17:00 +0200) | ||
| committer | Ingo Molnar <mingo@kernel.org> | |
| Tue, 12 Aug 2014 10:48:18 +0000 (12 12:48 +0200) | ||
| tree | 0a6213fa99f27404f07e2e38f29ce93ae9bbf588 | treesnapshot (tar.gz zip) |
| parent | 98a96f202203fecad65b44449077c695686ad4db | commitdiff |
sched/fair: Make calculate_imbalance() independent
Rik noticed that calculate_imbalance() relies on
update_sd_pick_busiest() to guarantee that busiest->sum_nr_running >
busiest->group_capacity_factor.
Break this implicit assumption (with the intent of not providing it
anymore) by having calculat_imbalance() verify it and not rely on
others.
Reported-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/20140729152631.GW12054@laptop.lan
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Rik noticed that calculate_imbalance() relies on
update_sd_pick_busiest() to guarantee that busiest->sum_nr_running >
busiest->group_capacity_factor.
Break this implicit assumption (with the intent of not providing it
anymore) by having calculat_imbalance() verify it and not rely on
others.
Reported-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/20140729152631.GW12054@laptop.lan
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| kernel/sched/fair.c | diffblobblamehistory |