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| author | Juri Lelli | 2015-03-31 10:53:36 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2015-04-02 17:42:56 +0200 |
| commit | 4cd57f97135840f637431c92380c8da3edbe44ed (patch) | |
| tree | 3978d002c4b4faf47990a6de7a53af7345b86253 /Kconfig | |
| parent | sched/core: Remove unused argument from init_[rt|dl]_rq() (diff) | |
| download | kernel-qcow2-linux-4cd57f97135840f637431c92380c8da3edbe44ed.tar.gz kernel-qcow2-linux-4cd57f97135840f637431c92380c8da3edbe44ed.tar.xz kernel-qcow2-linux-4cd57f97135840f637431c92380c8da3edbe44ed.zip | |
sched/deadline: Always enqueue on previous rq when dl_task_timer() fires
dl_task_timer() may fire on a different rq from where a task was removed
after throttling. Since the call path is:
dl_task_timer() ->
enqueue_task_dl() ->
enqueue_dl_entity() ->
replenish_dl_entity()
and replenish_dl_entity() uses dl_se's rq, we can't use current's rq
in dl_task_timer(), but we need to lock the task's previous one.
Tested-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Signed-off-by: Juri Lelli <juri.lelli@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Kirill Tkhai <ktkhai@parallels.com>
Cc: Juri Lelli <juri.lelli@gmail.com>
Fixes: 3960c8c0c789 ("sched: Make dl_task_time() use task_rq_lock()")
Link: http://lkml.kernel.org/r/1427792017-7356-1-git-send-email-juri.lelli@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Kconfig')
0 files changed, 0 insertions, 0 deletions