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
Subject: [PATCH tip/core/rcu 0/4] Stall-warning updates for v5.12
Date: Wed, 6 Jan 2021 08:52:10 -0800
Message-ID: <20210106165210.GA20296@paulmck-ThinkPad-P72> (raw)
Hello!
This series enhances RCU CPU stall-warning messages.
1. Mark obtuse portion of stall warning as internal debug.
2. For RCU grace-period kthread starvation, dump last CPU it ran on.
3. Do not NMI offline CPUs.
4. Check and report missed fqs timer wakeup on RCU stall, courtesy
of Neeraj Upadhyay.
Thanx, Paul
------------------------------------------------------------------------
Documentation/RCU/stallwarn.rst | 23 +++++++++++++++
kernel/rcu/tree.c | 25 ++++++++++-------
kernel/rcu/tree_exp.h | 2 -
kernel/rcu/tree_stall.h | 58 +++++++++++++++++++++++++++++++++++-----
4 files changed, 90 insertions(+), 18 deletions(-)
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Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-06 16:52 Paul E. McKenney [this message]
2021-01-06 16:52 ` [PATCH tip/core/rcu 1/4] rcu: Mark obtuse portion of stall warning as internal debug paulmck
2021-01-06 16:52 ` [PATCH tip/core/rcu 2/4] rcu: For RCU grace-period kthread starvation, dump last CPU it ran on paulmck
2021-01-06 16:52 ` [PATCH tip/core/rcu 3/4] rcu: Do not NMI offline CPUs paulmck
2021-01-06 16:52 ` [PATCH tip/core/rcu 4/4] rcu: Check and report missed fqs timer wakeup on RCU stall paulmck
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