linux-kernel - [PATCH tip/core/rcu 0/6] kvfree

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Date:   Wed, 3 Mar 2021 16:10:44 -0800
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com, mingo@...nel.org,
        jiangshanlai@...il.com, akpm@...ux-foundation.org,
        mathieu.desnoyers@...icios.com, josh@...htriplett.org,
        tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org,
        dhowells@...hat.com, edumazet@...gle.com, fweisbec@...il.com,
        oleg@...hat.com, joel@...lfernandes.org
Subject: [PATCH tip/core/rcu 0/6] kvfree_rcu() updates for v5.12-rc1

Hello!

This series contains kvfree_rcu() updates, most notably surrounding GPF
flags for memory allocation.

1.	kvfree_rcu: Directly allocate page for single-argument case,
	courtesy of "Uladzislau Rezki (Sony)".

2.	kvfree_rcu: Use __GFP_NOMEMALLOC for single-argument kvfree_rcu().

3.	kvfree_rcu: Make krc_this_cpu_unlock() use
	raw_spin_unlock_irqrestore().

4.	kvfree_rcu: Replace __GFP_RETRY_MAYFAIL by __GFP_NORETRY,
	courtesy of "Uladzislau Rezki (Sony)".

5.	kvfree_rcu: Use same set of GFP flags as does single-argument,
	courtesy of "Uladzislau Rezki (Sony)".

6.	Add kfree_rcu() single-argument scale test, courtesy of
	"Uladzislau Rezki (Sony)".

						Thanx, Paul

------------------------------------------------------------------------

 Documentation/admin-guide/kernel-parameters.txt |   12 ++++
 kernel/rcu/rcuscale.c                           |   15 +++++
 kernel/rcu/tree.c                               |   63 ++++++++++++++++--------
 3 files changed, 68 insertions(+), 22 deletions(-)