From: Frederic Weisbecker <frederic@kernel.org>
To: Thomas Gleixner <tglx@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
Anna-Maria Behnsen <anna-maria@linutronix.de>,
linux-fsdevel@vger.kernel.org, Calvin Owens <calvin@wbinvd.org>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
John Stultz <jstultz@google.com>, Stephen Boyd <sboyd@kernel.org>,
Sebastian Reichel <sre@kernel.org>,
linux-pm@vger.kernel.org, Pablo Neira Ayuso <pablo@netfilter.org>,
Florian Westphal <fw@strlen.de>, Phil Sutter <phil@nwl.cc>,
netfilter-devel@vger.kernel.org, coreteam@netfilter.org
Subject: Re: [patch V2 08/11] fs/timerfd: Use the new alarm/hrtimer functions
Date: Fri, 10 Apr 2026 15:46:25 +0200 [thread overview]
Message-ID: <adj_MY0JBmJupojP@localhost.localdomain> (raw)
In-Reply-To: <20260408114952.469141112@kernel.org>
Le Wed, Apr 08, 2026 at 01:54:20PM +0200, Thomas Gleixner a écrit :
> Like any other user controlled interface, timerfd based timers can be
> programmed with expiry times in the past or vary small intervals.
>
> Both hrtimer and alarmtimer provide new interfaces which return the queued
> state of the timer. If the timer was already expired, then let the callsite
> handle the timerfd context update so that the full round trip through the
> hrtimer interrupt is avoided.
>
> Signed-off-by: Thomas Gleixner <tglx@kernel.org>
> Cc: Alexander Viro <viro@zeniv.linux.org.uk>
> Cc: Christian Brauner <brauner@kernel.org>
> Cc: Jan Kara <jack@suse.cz>
> Cc: Anna-Maria Behnsen <anna-maria@linutronix.de>
> Cc: Frederic Weisbecker <frederic@kernel.org>
> Cc: linux-fsdevel@vger.kernel.org
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
--
Frederic Weisbecker
SUSE Labs
next prev parent reply other threads:[~2026-04-10 13:46 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-08 11:53 [patch V2 00/11] hrtimers: Prevent hrtimer interrupt starvation Thomas Gleixner
2026-04-08 11:53 ` [patch V2 01/11] hrtimer: Provide hrtimer_start_range_ns_user() Thomas Gleixner
2026-04-08 16:53 ` Frederic Weisbecker
2026-05-12 8:06 ` Dan Carpenter
2026-05-13 12:57 ` Thomas Gleixner
2026-04-08 11:53 ` [patch V2 02/11] hrtimer: Use hrtimer_start_expires_user() for hrtimer sleepers Thomas Gleixner
2026-04-08 20:41 ` Frederic Weisbecker
2026-04-08 11:53 ` [patch V2 03/11] posix-timers: Expand timer_[re]arm() callbacks with a boolean return value Thomas Gleixner
2026-04-09 9:28 ` Frederic Weisbecker
2026-04-08 11:54 ` [patch V2 04/11] posix-timers: Handle the timer_[re]arm() " Thomas Gleixner
2026-04-09 15:49 ` Frederic Weisbecker
2026-04-08 11:54 ` [patch V2 05/11] posix-timers: Switch to hrtimer_start_expires_user() Thomas Gleixner
2026-04-10 10:20 ` Frederic Weisbecker
2026-04-08 11:54 ` [patch V2 06/11] alarmtimer: Provide alarm_start_timer() Thomas Gleixner
2026-04-10 12:45 ` Frederic Weisbecker
2026-04-08 11:54 ` [patch V2 07/11] alarmtimer: Convert posix timer functions to alarm_start_timer() Thomas Gleixner
2026-04-10 12:37 ` Frederic Weisbecker
2026-04-08 11:54 ` [patch V2 08/11] fs/timerfd: Use the new alarm/hrtimer functions Thomas Gleixner
2026-04-10 13:46 ` Frederic Weisbecker [this message]
2026-04-08 11:54 ` [patch V2 09/11] power: supply: charger-manager: Switch to alarm_start_timer() Thomas Gleixner
2026-04-09 19:20 ` Sebastian Reichel
2026-04-08 11:54 ` [patch V2 10/11] netfilter: xt_IDLETIMER: " Thomas Gleixner
2026-04-08 11:54 ` [patch V2 11/11] alarmtimer: Remove unused interfaces Thomas Gleixner
2026-04-14 14:27 ` Frederic Weisbecker
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