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 0/6] Track callbacks on a per-segment basis
Date: Tue, 5 Jan 2021 17:25:41 -0800 [thread overview]
Message-ID: <20210106012541.GA13972@paulmck-ThinkPad-P72> (raw)
Hello!
This series adds counts to the rcu_segcblist structure that track the
number of callbacks in each segment, allowing RCU to distinguish between
(for example) a need to get grace periods done or get callbacks invoked
(or, for that matter, both).
1. Make rcu_do_batch count how many callbacks were executed,
courtesy of "Joel Fernandes (Google)".
2. Add additional comments to explain smp_mb(), courtesy of "Joel
Fernandes (Google)".
3. Add counters to segcblist datastructure, courtesy of "Joel
Fernandes (Google)".
4. segcblist: Remove redundant smp_mb()s, courtesy of "Joel Fernandes
(Google)".
5. Add tracing for how segcb list changes, courtesy of "Joel
Fernandes (Google)".
6. Add debug checks for segment lengths, courtesy of "Joel Fernandes
(Google)".
Thanx, Paul
------------------------------------------------------------------------
include/linux/rcu_segcblist.h | 1
include/trace/events/rcu.h | 26 +++++
kernel/rcu/rcu_segcblist.c | 203 +++++++++++++++++++++++++++++++-----------
kernel/rcu/rcu_segcblist.h | 6 -
kernel/rcu/srcutree.c | 5 -
kernel/rcu/tree.c | 29 ++++--
6 files changed, 209 insertions(+), 61 deletions(-)
next reply other threads:[~2021-01-06 1:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-06 1:25 Paul E. McKenney [this message]
2021-01-06 1:26 ` [PATCH tip/core/rcu 1/6] rcu/tree: Make rcu_do_batch count how many callbacks were executed paulmck
2021-01-06 1:26 ` [PATCH tip/core/rcu 2/6] rcu/segcblist: Add additional comments to explain smp_mb() paulmck
2021-01-06 1:26 ` [PATCH tip/core/rcu 3/6] rcu/segcblist: Add counters to segcblist datastructure paulmck
2021-01-06 1:26 ` [PATCH tip/core/rcu 4/6] rcu/tree: segcblist: Remove redundant smp_mb()s paulmck
2021-01-06 1:26 ` [PATCH tip/core/rcu 5/6] rcu/trace: Add tracing for how segcb list changes paulmck
2021-01-06 1:26 ` [PATCH tip/core/rcu 6/6] rcu/segcblist: Add debug checks for segment lengths 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=20210106012541.GA13972@paulmck-ThinkPad-P72 \
--to=paulmck@kernel.org \
--cc=akpm@linux-foundation.org \
--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=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).