From: Peter Zijlstra <peterz@infradead.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Uros Bizjak <ubizjak@gmail.com>,
linux-kernel@vger.kernel.org,
Josh Poimboeuf <jpoimboe@kernel.org>,
Jason Baron <jbaron@akamai.com>, Ard Biesheuvel <ardb@kernel.org>
Subject: Re: [PATCH] jump_label: use atomic_try_cmpxchg in static_key_slow_inc_cpuslocked
Date: Wed, 23 Nov 2022 10:08:59 +0100 [thread overview]
Message-ID: <Y33jK7p2Xc6KD1ax@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20221122161446.28907755@gandalf.local.home>
On Tue, Nov 22, 2022 at 04:14:46PM -0500, Steven Rostedt wrote:
> > + for (int v = atomic_read(&key->enabled); v > 0; )
>
> Although it's permitted by the compiler, the kernel style is to not add
> declarations in conditionals.
I'm thinking the whole motivation for upping to C99 was exactly so that
we could start using this pattern.
next prev parent reply other threads:[~2022-11-23 9:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-19 14:08 [PATCH] jump_label: use atomic_try_cmpxchg in static_key_slow_inc_cpuslocked Uros Bizjak
2022-10-28 6:41 ` [tip: locking/core] jump_label: Use atomic_try_cmpxchg() in static_key_slow_inc_cpuslocked() tip-bot2 for Uros Bizjak
2022-11-22 21:14 ` [PATCH] jump_label: use atomic_try_cmpxchg in static_key_slow_inc_cpuslocked Steven Rostedt
2022-11-23 9:08 ` Peter Zijlstra [this message]
2022-11-23 11:28 ` Mark Rutland
2022-11-23 13:26 ` Steven Rostedt
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