diff options
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2016-11-25 00:07:23 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2016-12-28 12:05:36 -0800 |
| commit | 9b910e3e99df68ea86a210298a9c1bc8cead194e (patch) | |
| tree | 2bd86c4c87806b7e92eb70f432adefc74ec06ca0 /kernel | |
| parent | 58bdd5f9c975c791e861a36a36649ed072f14f2b (diff) | |
rcu: Remove short-term CPU kicking
Commit 4914950aaa12d ("rcu: Stop treating in-kernel CPU-bound workloads
as errors") added a (relatively) short-timeout call to resched_cpu().
This was inspired by as issue that was fixed by b7e7ade34e61 ("sched/core:
Fix remote wakeups"). But given that this issue was fixed, it is time
for the current commit to remove this call to resched_cpu().
Reported-by: Byungchul Park <byungchul.park@lge.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/rcu/tree.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 5f4f80d07852..91a68e4e6671 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -1345,12 +1345,6 @@ static int rcu_implicit_dynticks_qs(struct rcu_data *rdp, rdp->rsp->jiffies_resched += 5; /* Re-enable beating. */ } - /* And if it has been a really long time, kick the CPU as well. */ - if (ULONG_CMP_GE(jiffies, - rdp->rsp->gp_start + 2 * jiffies_till_sched_qs) || - ULONG_CMP_GE(jiffies, rdp->rsp->gp_start + jiffies_till_sched_qs)) - resched_cpu(rdp->cpu); /* Force CPU into scheduler. */ - return 0; } |