From: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
To: LKML <linux-kernel@vger.kernel.org>, RCU <rcu@vger.kernel.org>,
"Paul E . McKenney" <paulmck@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>,
Andrew Morton <akpm@linux-foundation.org>,
Daniel Axtens <dja@axtens.net>,
Frederic Weisbecker <frederic@kernel.org>,
Neeraj Upadhyay <neeraju@codeaurora.org>,
Joel Fernandes <joel@joelfernandes.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
"Theodore Y . Ts'o" <tytso@mit.edu>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Uladzislau Rezki <urezki@gmail.com>,
Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>,
"David S. Miller" <davem@davemloft.net>
Subject: [PATCH 7/9] net/core: Switch to kvfree_rcu() API
Date: Wed, 24 Nov 2021 12:03:06 +0100 [thread overview]
Message-ID: <20211124110308.2053-8-urezki@gmail.com> (raw)
In-Reply-To: <20211124110308.2053-1-urezki@gmail.com>
Instead of invoking a synchronize_rcu() to free a pointer
after a grace period we can directly make use of new API
that does the same but in more efficient way.
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
---
net/core/sysctl_net_core.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index 5f88526ad61c..8b4ab9a6e2d7 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -141,8 +141,7 @@ static int flow_limit_cpu_sysctl(struct ctl_table *table, int write,
lockdep_is_held(&flow_limit_update_mutex));
if (cur && !cpumask_test_cpu(i, mask)) {
RCU_INIT_POINTER(sd->flow_limit, NULL);
- synchronize_rcu();
- kfree(cur);
+ kvfree_rcu(cur);
} else if (!cur && cpumask_test_cpu(i, mask)) {
cur = kzalloc_node(len, GFP_KERNEL,
cpu_to_node(i));
--
2.30.2
next prev parent reply other threads:[~2021-11-24 11:04 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-24 11:02 [PATCH 0/9] Switch to single argument kvfree_rcu() API Uladzislau Rezki (Sony)
2021-11-24 11:03 ` [PATCH 1/9] ext4: Switch to " Uladzislau Rezki (Sony)
2021-12-08 14:36 ` Uladzislau Rezki
2021-11-24 11:03 ` [PATCH 2/9] ext4: Replace ext4_kvfree_array_rcu() by " Uladzislau Rezki (Sony)
2021-12-08 14:37 ` Uladzislau Rezki
2021-11-24 11:03 ` [PATCH 3/9] fs: nfs: sysfs: Switch to " Uladzislau Rezki (Sony)
2021-11-24 11:03 ` [PATCH 4/9] drivers: " Uladzislau Rezki (Sony)
2021-11-29 12:58 ` Lee Jones
2021-11-29 15:18 ` Uladzislau Rezki
2021-11-29 17:19 ` Marciniszyn, Mike
2021-12-08 15:24 ` Jason Gunthorpe
2021-11-24 11:03 ` [PATCH 5/9] x86/mm: " Uladzislau Rezki (Sony)
2021-11-24 14:58 ` Steven Rostedt
2021-11-24 14:59 ` Steven Rostedt
2021-11-24 18:01 ` Uladzislau Rezki
2021-11-24 11:03 ` [PATCH 6/9] net/tipc: " Uladzislau Rezki (Sony)
2021-11-24 11:03 ` Uladzislau Rezki (Sony) [this message]
2021-11-24 11:03 ` [PATCH 8/9] module: " Uladzislau Rezki (Sony)
2021-11-30 10:39 ` Miroslav Benes
2021-11-30 11:04 ` Sebastian Andrzej Siewior
2021-12-01 9:24 ` Uladzislau Rezki
2021-12-01 20:34 ` Uladzislau Rezki
2021-11-24 11:03 ` [PATCH 9/9] tracing: " Uladzislau Rezki (Sony)
2021-11-24 15:00 ` Steven Rostedt
2021-11-24 18:03 ` Uladzislau Rezki
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=20211124110308.2053-8-urezki@gmail.com \
--to=urezki@gmail.com \
--cc=akpm@linux-foundation.org \
--cc=bigeasy@linutronix.de \
--cc=davem@davemloft.net \
--cc=dja@axtens.net \
--cc=frederic@kernel.org \
--cc=joel@joelfernandes.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mhocko@suse.com \
--cc=neeraju@codeaurora.org \
--cc=oleksiy.avramchenko@sonymobile.com \
--cc=paulmck@kernel.org \
--cc=peterz@infradead.org \
--cc=rcu@vger.kernel.org \
--cc=tglx@linutronix.de \
--cc=tytso@mit.edu \
/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).