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| author | Ingo Molnar <mingo@kernel.org> | 2014-06-25 07:37:49 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-06-25 07:37:49 +0200 |
| commit | 5cfec3422adcc1987a1b5fc5ff59ad42a1bc910e (patch) | |
| tree | efb9591a225f1c760ab26a951f7c8623368225b2 /Documentation | |
| parent | Linux 3.16-rc2 (diff) | |
| parent | rcu: Reduce overhead of cond_resched() checks for RCU (diff) | |
| download | linux-5cfec3422adcc1987a1b5fc5ff59ad42a1bc910e.tar.xz linux-5cfec3422adcc1987a1b5fc5ff59ad42a1bc910e.zip | |
Merge branch 'urgent.2014.06.23a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/urgent
Pull RCU fixes from Paul E. McKenney:
" This series includes the following:
1. Export a pair of debug-object interfaces for RCU that will
allow the slab allocators to avoid a recursion bug located
by Sasha Levin. Strictly speaking, this is not a regression,
but it would be good to enable the fix.
2. Address a serious performance regression on an open/close
micro-benchmark located by Dave Hansen. The offending commit
is ac1bea85781e (Make cond_resched() report RCU quiescent states). "
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 884904975d0b..7ffecb5fd004 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -2790,6 +2790,12 @@ bytes respectively. Such letter suffixes can also be entirely omitted. leaf rcu_node structure. Useful for very large systems. + rcutree.jiffies_till_sched_qs= [KNL] + Set required age in jiffies for a + given grace period before RCU starts + soliciting quiescent-state help from + rcu_note_context_switch(). + rcutree.jiffies_till_first_fqs= [KNL] Set delay from grace-period initialization to first attempt to force quiescent states. |