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From: Thomas Gleixner <tglx@linutronix.de>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org,
	Steven Rostedt <rostedt@goodmis.org>,
	netdev@vger.kernel.org
Subject: Re: [PATCH RT] net: move xmit_recursion to per-task variable on -RT
Date: Wed, 13 Jan 2016 18:31:46 +0100 (CET)	[thread overview]
Message-ID: <alpine.DEB.2.11.1601131830440.3575@nanos> (raw)
In-Reply-To: <20160113152352.GH29964@linutronix.de>

On Wed, 13 Jan 2016, Sebastian Andrzej Siewior wrote:
> +#ifdef CONFIG_PREEMPT_RT_FULL
> +static inline int dev_recursion_level(void)
> +{
> +	return atomic_read(&current->xmit_recursion);

Why would you need an atomic here. current does hardly race against itself.

Thanks,

	tglx

  reply	other threads:[~2016-01-13 17:31 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-13 15:23 [PATCH RT] net: move xmit_recursion to per-task variable on -RT Sebastian Andrzej Siewior
2016-01-13 17:31 ` Thomas Gleixner [this message]
2016-01-14 14:50   ` Sebastian Andrzej Siewior
2016-01-14 22:02     ` Hannes Frederic Sowa
2016-01-14 22:20       ` Eric Dumazet
2016-01-14 23:00         ` Hannes Frederic Sowa
2016-01-15  8:21           ` Thomas Gleixner
2016-01-15  9:34             ` Hannes Frederic Sowa

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