Commit-ID: 8c1cf2da6f8af7f6b6e0e06d3a83115712cc04b8
Gitweb: https://git.kernel.org/tip/8c1cf2da6f8af7f6b6e0e06d3a83115712cc04b8
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Sat, 7 Jul 2018 18:12:26 -0700
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Thu, 30 Aug 2018 16:03:32 -0700
rcu: Clean up flavor-related definitions and comments in Kconfig
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
kernel/rcu/Kconfig | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/kernel/rcu/Kconfig b/kernel/rcu/Kconfig
index a0b7f0103ca9..939a2056c87a 100644
--- a/kernel/rcu/Kconfig
+++ b/kernel/rcu/Kconfig
@@ -196,7 +196,7 @@ config RCU_BOOST
This option boosts the priority of preempted RCU readers that
block the current preemptible RCU grace period for too long.
This option also prevents heavy loads from blocking RCU
- callback invocation for all flavors of RCU.
+ callback invocation.
Say Y here if you are working with real-time apps or heavy loads
Say N here if you are unsure.
@@ -225,15 +225,15 @@ config RCU_NOCB_CPU
callback invocation to energy-efficient CPUs in battery-powered
asymmetric multiprocessors.
- This option offloads callback invocation from the set of
- CPUs specified at boot time by the rcu_nocbs parameter.
- For each such CPU, a kthread ("rcuox/N") will be created to
- invoke callbacks, where the "N" is the CPU being offloaded,
- and where the "p" for RCU-preempt and "s" for RCU-sched.
- Nothing prevents this kthread from running on the specified
- CPUs, but (1) the kthreads may be preempted between each
- callback, and (2) affinity or cgroups can be used to force
- the kthreads to run on whatever set of CPUs is desired.
+ This option offloads callback invocation from the set of CPUs
+ specified at boot time by the rcu_nocbs parameter. For each
+ such CPU, a kthread ("rcuox/N") will be created to invoke
+ callbacks, where the "N" is the CPU being offloaded, and where
+ the "p" for RCU-preempt (PREEMPT kernels) and "s" for RCU-sched
+ (!PREEMPT kernels). Nothing prevents this kthread from running
+ on the specified CPUs, but (1) the kthreads may be preempted
+ between each callback, and (2) affinity or cgroups can be used
+ to force the kthreads to run on whatever set of CPUs is desired.
Say Y here if you want to help to debug reduced OS jitter.
Say N here if you are unsure.
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