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| author |   Neeraj Upadhyay <neeraju@codeaurora.org> | 2019-03-11 15:16:11 +0530 |
|---|---|---|
| committer |   Paul E. McKenney <paulmck@linux.ibm.com> | 2019-03-26 14:38:38 -0700 |
| commit | 6973032a602ee678c98644a30d57ebf9c72dd6d3 (patch) | |
| tree | 44820db287285618da734b39523757fdb9b0abb6 /scripts/patch-kernel | |
| parent | rcu: Fix self-wakeups for grace-period kthread (diff) | |
rcu: Default jiffies_to_sched_qs to jiffies_till_sched_qs
The current code only calls adjust_jiffies_till_sched_qs() if
jiffies_till_sched_qs is left at its default value, so when the
jiffies_till_sched_qs kernel-boot parameter actually is specified,
jiffies_to_sched_qs will be left with the value zero, which
will result in useless slowdowns of cond_resched(). This commit
therefore changes rcu_init_geometry() to unconditionally invoke
adjust_jiffies_till_sched_qs(), which ensures that jiffies_to_sched_qs
will be initialized in all cases, thus maintaining good cond_resched()
performance.
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Diffstat (limited to 'scripts/patch-kernel')
0 files changed, 0 insertions, 0 deletions