From: Jens Axboe <axboe@kernel.dk>
To: Caleb Sander Mateos <csander@purestorage.com>,
"Paul E. McKenney" <paulmck@kernel.org>,
Frederic Weisbecker <frederic@kernel.org>,
Neeraj Upadhyay <neeraj.upadhyay@kernel.org>,
Joel Fernandes <joel@joelfernandes.org>,
Josh Triplett <josh@joshtriplett.org>,
Boqun Feng <boqun.feng@gmail.com>,
Uladzislau Rezki <urezki@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Lai Jiangshan <jiangshanlai@gmail.com>,
Zqiang <qiang.zhang1211@gmail.com>,
Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
Valentin Schneider <vschneid@redhat.com>,
Anna-Maria Behnsen <anna-maria@linutronix.de>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
rcu@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH v2] softirq: remove parameter from action callback
Date: Thu, 15 Aug 2024 11:35:38 -0600 [thread overview]
Message-ID: <8db12b3d-08f7-4c3e-a403-177285b0bcec@kernel.dk> (raw)
In-Reply-To: <20240815171549.3260003-1-csander@purestorage.com>
On 8/15/24 11:15 AM, Caleb Sander Mateos wrote:
> When softirq actions are called, they are passed a pointer to the entry
> in the softirq_vec table containing the action's function pointer. This
> pointer isn't very useful, as the action callback already knows what
> function it is. And since each callback handles a specific softirq, the
> callback also knows which softirq number is running.
>
> No softirq action callbacks actually use this parameter, so remove it
> from the function pointer signature. This clarifies that softirq actions
> are global routines and makes it slightly cheaper to call them.
>
> v2: use full 72 characters in commit description lines, add Reviewed-by
No need to resend because of it, but the changelog bits go below the ---
line, not in the commit message. Whoever applies can just take care of
that.
--
Jens Axboe
next prev parent reply other threads:[~2024-08-15 17:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-13 23:31 [PATCH] softirq: remove parameter from action callback Caleb Sander Mateos
2024-08-14 14:00 ` Jens Axboe
2024-08-15 17:15 ` [PATCH v2] " Caleb Sander Mateos
2024-08-15 17:35 ` Jens Axboe [this message]
2024-08-20 18:49 ` Paul E. McKenney
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