On Tue, Feb 20, 2024 at 07:31:11PM +0100, Uladzislau Rezki (Sony) wrote: > This is a v5 that tends to improve synchronize_rcu() call in terms of > latency reduction. This has been developed together with Neeraj Upadhyay. > The delta between previous v4 and v5 is rather small. Main difference > are cosmetic changes related to patch squashing and data structures > splitting. > > It is based on Paul's dev branch. Very good, thank you! Queued for further review and testing. Thanx, Paul > v4 -> v5: > - furthers squashing to reduce number of patches; > - remove the CONFIG_RCU_SR_NORMAL_DEBUG_GP Kconfig option and > reuse already existing debug option which is CONFIG_PROVE_RCU; > - add data structures in a separate patch. > > v4: https://lore.kernel.org/lkml/ZZ2bi5iPwXLgjB-f@xxxxxxxxxx/T/ > v3: https://lore.kernel.org/lkml/cd45b0b5-f86b-43fb-a5f3-47d340cd4f9f@paulmck-laptop/T/ > v2: https://lore.kernel.org/all/20231030131254.488186-1-urezki@xxxxxxxxx/T/ > v1: https://lore.kernel.org/lkml/20231025140915.590390-1-urezki@xxxxxxxxx/T/ > > Uladzislau Rezki (Sony) (4): > rcu: Add data structures for synchronize_rcu() > rcu: Reduce synchronize_rcu() latency > rcu: Add a trace event for synchronize_rcu_normal() > rcu: Support direct wake-up of synchronize_rcu() users > > .../admin-guide/kernel-parameters.txt | 14 + > include/trace/events/rcu.h | 27 ++ > kernel/rcu/tree.c | 363 +++++++++++++++++- > kernel/rcu/tree.h | 20 + > kernel/rcu/tree_exp.h | 2 +- > 5 files changed, 424 insertions(+), 2 deletions(-) > > -- > 2.39.2 >
