linux-kernel - Re: [RFC PATCH 2/2] net: mac808211: mac802154: use lockdep_assert_in

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Message-ID: <20180504183249.GU12217@hirez.programming.kicks-ass.net>
Date:   Fri, 4 May 2018 20:32:49 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc:     linux-kernel@...r.kernel.org, tglx@...utronix.de,
        Ingo Molnar <mingo@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        Johannes Berg <johannes@...solutions.net>,
        Alexander Aring <alex.aring@...il.com>,
        Stefan Schmidt <stefan@....samsung.com>,
        netdev@...r.kernel.org, linux-wireless@...r.kernel.org,
        linux-wpan@...r.kernel.org,
        Anna-Maria Gleixner <anna-maria@...utronix.de>
Subject: Re: [RFC PATCH 2/2] net: mac808211: mac802154: use
 lockdep_assert_in_softirq() instead own warning

On Fri, May 04, 2018 at 07:51:44PM +0200, Sebastian Andrzej Siewior wrote:
> From: Anna-Maria Gleixner <anna-maria@...utronix.de>
> 
> The warning in ieee802154_rx() and ieee80211_rx_napi() is there to ensure
> the softirq context for the subsequent netif_receive_skb() call. 

That's not in fact what it does though; so while that might indeed be
the intent that's not what it does.