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| author | Kirill Tkhai <ktkhai@parallels.com> | 2014-12-15 12:56:58 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-01-14 13:34:16 +0100 |
| commit | bb04159df99fa353d0fb524574aca03ce2c6515b (patch) | |
| tree | 1ea21466b45395836fb0fd6abb6398eb012b135b /kernel/utsname.c | |
| parent | sched/debug: Fix potential call to __ffs(0) in sched_show_task() (diff) | |
| download | linux-bb04159df99fa353d0fb524574aca03ce2c6515b.tar.xz linux-bb04159df99fa353d0fb524574aca03ce2c6515b.zip | |
sched/fair: Fix sched_entity::avg::decay_count initialization
Child has the same decay_count as parent. If it's not zero,
we add it to parent's cfs_rq->removed_load:
wake_up_new_task()->set_task_cpu()->migrate_task_rq_fair().
Child's load is a just garbade after copying of parent,
it hasn't been on cfs_rq yet, and it must not be added to
cfs_rq::removed_load in migrate_task_rq_fair().
The patch moves sched_entity::avg::decay_count intialization
in sched_fork(). So, migrate_task_rq_fair() does not change
removed_load.
Signed-off-by: Kirill Tkhai <ktkhai@parallels.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Ben Segall <bsegall@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1418644618.6074.13.camel@tkhai
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/utsname.c')
0 files changed, 0 insertions, 0 deletions