From: Linus Torvalds <torvalds@linux-foundation.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
jstultz@google.com, Stephen Boyd <sboyd@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Marcel Holtmann <marcel@holtmann.org>,
Johan Hedberg <johan.hedberg@gmail.com>,
Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
Eric Dumazet <edumazet@google.com>,
Guenter Roeck <linux@roeck-us.net>
Subject: Re: [RFC][PATCH] timers: Add del_time_free() to be called before freeing timers
Date: Fri, 8 Apr 2022 14:30:21 -1000 [thread overview]
Message-ID: <CAHk-=wg3icnjr+6aU-Wyw+kBoSRBM28P4o4iTgimOWDuuUiStQ@mail.gmail.com> (raw)
In-Reply-To: <20220408202230.0ea5388f@rorschach.local.home>
On Fri, Apr 8, 2022 at 2:22 PM Steven Rostedt <rostedt@goodmis.org> wrote:
>
> We could always use the LSB bit of the function as a "shutdown" flag, where:
While we do that for data pointers, doing it for function pointers is dodgy.
Not all architectures necessarily align code pointers. In fact, I
think that "-Os" on x86 makes all code alignment go away, and so
function pointers have no alignment at all.
Linus
next prev parent reply other threads:[~2022-04-09 0:30 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-07 20:17 [RFC][PATCH] timers: Add del_time_free() to be called before freeing timers Steven Rostedt
2022-04-07 21:58 ` Guenter Roeck
2022-04-07 22:51 ` Steven Rostedt
2022-04-08 0:58 ` Guenter Roeck
2022-04-08 1:36 ` Steven Rostedt
2022-04-08 10:37 ` Thomas Gleixner
2022-04-08 12:33 ` Steven Rostedt
2022-04-08 15:55 ` Steven Rostedt
2022-04-08 17:33 ` Linus Torvalds
2022-04-08 20:10 ` Steven Rostedt
2022-04-08 20:26 ` Steven Rostedt
2022-04-08 23:18 ` Linus Torvalds
2022-04-08 20:29 ` Thomas Gleixner
2022-04-08 20:58 ` Steven Rostedt
2022-04-08 21:46 ` Thomas Gleixner
2022-04-08 21:59 ` Steven Rostedt
2022-04-09 0:22 ` Steven Rostedt
2022-04-09 0:30 ` Linus Torvalds [this message]
2022-04-09 0:49 ` Steven Rostedt
2022-04-09 1:00 ` Linus Torvalds
2022-04-09 1:14 ` Steven Rostedt
2022-11-24 14:16 ` [tip: timers/core] timers: Provide timer_shutdown[_sync]() tip-bot2 for Thomas Gleixner
2022-11-24 14:16 ` [tip: timers/core] timers: Add shutdown mechanism to the internal functions tip-bot2 for Thomas Gleixner
2022-11-24 14:16 ` [tip: timers/core] timers: Split [try_to_]del_timer[_sync]() to prepare for shutdown mode tip-bot2 for Thomas Gleixner
2022-11-24 14:16 ` [tip: timers/core] timers: Silently ignore timers with a NULL function tip-bot2 for Thomas Gleixner
2022-11-24 14:16 ` [tip: timers/core] timers: Use del_timer_sync() even on UP tip-bot2 for Thomas Gleixner
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