From: "Paul E. McKenney" <paulmck@kernel.org>
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com,
mingo@kernel.org, jiangshanlai@gmail.com,
akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org,
bigeasy@linutronix.de, swood@redhat.com
Subject: [PATCH tip/core/rcu 0/4] Fix RCU priority boosting
Date: Tue, 19 Jan 2021 20:31:44 -0800 [thread overview]
Message-ID: <20210120043144.GA7045@paulmck-ThinkPad-P72> (raw)
Hello!
This series fixes a bug in which an RCU-priority-boosted task can stay
boosted for some time after it has exited its RCU read-side critical
section. This bug arose during the RCU flavor consolidation effort.
The patches are as follows:
1. Expedite deboost in case of deferred quiescent state.
2. Make TREE03 use real-time tree.use_softirq setting.
3. Run rcuo kthreads at elevated priority in CONFIG_RCU_BOOST
kernels.
4. Fix testing of RCU priority boosting.
Thanx, Paul
------------------------------------------------------------------------
kernel/rcu/rcutorture.c | 36 +++++++------
kernel/rcu/tree_plugin.h | 28 +++++-----
tools/testing/selftests/rcutorture/configs/rcu/TREE03.boot | 1
3 files changed, 39 insertions(+), 26 deletions(-)
next reply other threads:[~2021-01-20 4:32 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-20 4:31 Paul E. McKenney [this message]
2021-01-20 4:32 ` [PATCH tip/core/rcu 1/4] rcu: Expedite deboost in case of deferred quiescent state paulmck
2021-01-27 2:42 ` Boqun Feng
2021-01-27 4:40 ` Paul E. McKenney
2021-01-27 7:05 ` Boqun Feng
2021-01-27 19:18 ` Paul E. McKenney
2021-01-28 1:11 ` Boqun Feng
2021-01-28 1:28 ` Paul E. McKenney
2021-01-20 4:32 ` [PATCH tip/core/rcu 2/4] rcutorture: Make TREE03 use real-time tree.use_softirq setting paulmck
2021-01-20 4:32 ` [PATCH tip/core/rcu 3/4] rcu: Run rcuo kthreads at elevated priority in CONFIG_RCU_BOOST kernels paulmck
2021-01-20 4:32 ` [PATCH tip/core/rcu 4/4] rcutorture: Fix testing of RCU priority boosting paulmck
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210120043144.GA7045@paulmck-ThinkPad-P72 \
--to=paulmck@kernel.org \
--cc=akpm@linux-foundation.org \
--cc=bigeasy@linutronix.de \
--cc=dhowells@redhat.com \
--cc=edumazet@google.com \
--cc=fweisbec@gmail.com \
--cc=jiangshanlai@gmail.com \
--cc=joel@joelfernandes.org \
--cc=josh@joshtriplett.org \
--cc=kernel-team@fb.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mathieu.desnoyers@efficios.com \
--cc=mingo@kernel.org \
--cc=oleg@redhat.com \
--cc=peterz@infradead.org \
--cc=rcu@vger.kernel.org \
--cc=rostedt@goodmis.org \
--cc=swood@redhat.com \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).