linux-kernel - [PATCH 0/3] rcu/nocb: RCU nocb bypass-list cleanup patches

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Message-Id: <20260103221117.521087-1-joelagnelf@nvidia.com>
Date: Sat,  3 Jan 2026 17:11:14 -0500
From: Joel Fernandes <joelagnelf@...dia.com>
To: linux-kernel@...r.kernel.org
Cc: "Paul E . McKenney" <paulmck@...nel.org>,
	Boqun Feng <boqun.feng@...il.com>,
	rcu@...r.kernel.org,
	Frederic Weisbecker <frederic@...nel.org>,
	Neeraj Upadhyay <neeraj.upadhyay@...nel.org>,
	Josh Triplett <josh@...htriplett.org>,
	Uladzislau Rezki <urezki@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Lai Jiangshan <jiangshanlai@...il.com>,
	Zqiang <qiang.zhang@...ux.dev>,
	Joel Fernandes <joelagnelf@...dia.com>
Subject: [PATCH 0/3] rcu/nocb: RCU nocb bypass-list cleanup patches

The RCU nocb logic is complex, with duplicate code patterns scattered
across multiple functions. This series is a small refactor to make the
bypass-list code easier to follow. In the future, I am planning to do more
refactors of this code.

This series is based on top of the earlier -next series I had sent:
https://lore.kernel.org/all/20260101163417.1065705-1-joelagnelf@nvidia.com/

There is no urgency with this particular series. It is OK for v7.1 as well.

Testing:
  I ran rcutorture on this series plus the earlier -next submissions for
  16 hours on all RCU NOCB configs (TREE01, TREE05, TREE08). All scenarios
  passed.

The git tree with all patches can be found at:
https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git (tag: rcu-nocb-cleanup-v1-20260103)

Joel Fernandes (3):
  rcu/nocb: Extract nocb_defer_wakeup_cancel() helper
  rcu/nocb: Consolidate rcu_nocb_cpu_offload/deoffload functions
  rcu/nocb: Extract nocb_bypass_needs_flush() to reduce duplication

 kernel/rcu/tree_nocb.h | 143 +++++++++++++++++++++++++----------------
 1 file changed, 86 insertions(+), 57 deletions(-)


base-commit: a02abdb7c34af5364e6243276b8ba1dc50972ffe
--
2.34.1