Messages in this thread | | | From | Frederic Weisbecker <> | Subject | [PATCH 00/11] rcu: Make rcu_core() safe in PREEMPT_RT with NOCB + a few other fixes v2 | Date | Mon, 11 Oct 2021 16:51:29 +0200 |
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Hi,
No code change in this v2, only changelogs:
* Add tags from Valentin and Sebastian
* Remove last reference to SEGCBLIST_SOFTIRQ_ONLY (thanks Valentin)
* Rewrite changelog for "rcu/nocb: Check a stable offloaded state to manipulate qlen_last_fqs_check" after off-list debates with Paul.
* Remove the scenario with softirq interrupting rcuc on "rcu/nocb: Limit number of softirq callbacks only on softirq" as it's probably not possible (thanks Valentin).
* Remove the scenario with task spent scheduling out accounted on tlimit as it's not possible (thanks Valentin) (see "rcu: Apply callbacks processing time limit only on softirq")
* Fixed changelog of "rcu/nocb: Don't invoke local rcu core on callback overload from nocb kthread" (thanks Sebastian).
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git rcu/rt-v2
HEAD: 2c9349986d5f70a555195139665841cd98e9aba4
Thanks, Frederic ---
Frederic Weisbecker (10): rcu/nocb: Make local rcu_nocb_lock_irqsave() safe against concurrent deoffloading rcu/nocb: Prepare state machine for a new step rcu/nocb: Invoke rcu_core() at the start of deoffloading rcu/nocb: Make rcu_core() callbacks acceleration (de-)offloading safe rcu/nocb: Check a stable offloaded state to manipulate qlen_last_fqs_check rcu/nocb: Use appropriate rcu_nocb_lock_irqsave() rcu/nocb: Limit number of softirq callbacks only on softirq rcu: Fix callbacks processing time limit retaining cond_resched() rcu: Apply callbacks processing time limit only on softirq rcu/nocb: Don't invoke local rcu core on callback overload from nocb kthread
Thomas Gleixner (1): rcu/nocb: Make rcu_core() callbacks acceleration preempt-safe
include/linux/rcu_segcblist.h | 51 ++++++++++++++++++------- kernel/rcu/rcu_segcblist.c | 10 ++--- kernel/rcu/rcu_segcblist.h | 12 +++--- kernel/rcu/tree.c | 87 +++++++++++++++++++++++++++++-------------- kernel/rcu/tree.h | 16 +++++--- kernel/rcu/tree_nocb.h | 29 ++++++++++++--- 6 files changed, 141 insertions(+), 64 deletions(-)
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