This commit adds rcutree.rcu_normal_wake_from_gp description to the kernel-parameters.txt file.
Signed-off-by: Uladzislau Rezki (Sony) <[email protected]> --- Documentation/admin-guide/kernel-parameters.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 03a4bdb7512b..f41bcf17ff58 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5009,6 +5009,18 @@ this kernel boot parameter, forcibly setting it to zero. + rcutree.rcu_normal_wake_from_gp= [KNL] + Reduces a latency of synchronize_rcu() call. This approach + maintains its own track of synchronize_rcu() callers, so it + does not interact with regular callbacks because it does not + use a call_rcu[_hurry]() path. + + Please note, the rcu_normal_wake_from_gp parameter takes effect + if the rcupdate.rcu_normal is active also. + + Faster version is preferred set to 1. + Default is 0. + rcuscale.gp_async= [KNL] Measure performance of asynchronous grace-period primitives such as call_rcu(). -- 2.30.2
