diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2024-05-31 16:49:40 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2024-08-17 12:06:45 +0300 |
| commit | 82e9d0456e06cebe2c89f3c73cdbc9e3805e9437 (patch) | |
| tree | e13b9ee47e5d1ad45104110d714bbe52e3be612e /include | |
| parent | fc1892becd5672f52329a75c73117b60ac7841b7 (diff) | |
| download | linux-82e9d0456e06cebe2c89f3c73cdbc9e3805e9437.tar.xz | |
sched/fair: Avoid re-setting virtual deadline on 'migrations'
During OSPM24 Youssef noted that migrations are re-setting the virtual
deadline. Notably everything that does a dequeue-enqueue, like setting
nice, changing preferred numa-node, and a myriad of other random crap,
will cause this to happen.
This shouldn't be. Preserve the relative virtual deadline across such
dequeue/enqueue cycles.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <vschneid@redhat.com>
Tested-by: Valentin Schneider <vschneid@redhat.com>
Link: https://lkml.kernel.org/r/20240727105030.625119246@infradead.org
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sched.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 8a3a389bd623..d25e1cfd5766 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -544,8 +544,10 @@ struct sched_entity { u64 min_vruntime; struct list_head group_node; - unsigned int on_rq; - unsigned int sched_delayed; + unsigned char on_rq; + unsigned char sched_delayed; + unsigned char rel_deadline; + /* hole */ u64 exec_start; u64 sum_exec_runtime; |