netdev - Re: [RFC PATCH 1/2] mac80211: make max_network

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Date:	Wed, 09 Jun 2010 11:38:07 +0200
From:	Johannes Berg <johannes@...solutions.net>
To:	florian@...kler.org
Cc:	pm list <linux-pm@...ts.linux-foundation.org>,
	james.bottomley@...e.de, markgross@...gnar.org,
	mgross@...ux.intel.com,
	"John W. Linville" <linville@...driver.com>,
	"David S. Miller" <davem@...emloft.net>,
	Javier Cardona <javier@...ybit.com>, Jouni Malinen <j@...fi>,
	Rui Paulo <rpaulo@...il.com>,
	Kalle Valo <kalle.valo@...ia.com>,
	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [RFC PATCH 1/2] mac80211: make max_network_latency notifier
 atomic safe

On Wed, 2010-06-09 at 11:15 +0200, florian@...kler.org wrote:
> In order to have the pm_qos framework be callable from interrupt
> context, all listeners have to also be callable in that context.

That makes no sense at all. Why add work structs _everywhere_ in the
callees and make the API harder to use and easy to get wrong completely,
instead of just adding a single work struct that will be queued from the
caller and dealing with the locking complexity etc. just once.

johannes

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