netdev - Re: [PATCH net v5 1/5] bnx2x: protect different statistics flows

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Date:	Mon, 12 Aug 2013 21:24:02 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	stephen@...workplumber.org
Cc:	dmitry@...adcom.com, netdev@...r.kernel.org, eilong@...adcom.com,
	ariele@...adcom.com
Subject: Re: [PATCH net v5 1/5] bnx2x: protect different statistics flows

From: Stephen Hemminger <stephen@...workplumber.org>
Date: Mon, 12 Aug 2013 17:12:08 -0700

> On Tue, 13 Aug 2013 02:24:59 +0300
> "Dmitry Kravkov" <dmitry@...adcom.com> wrote:
> 
>> +	bool					stats_started;
>> +	struct semaphore			stats_sema;
> 
> Is there a reason to use a counting semaphore? Do you expect it to
> be held across user process boundary? or want count > 1?
> 
> Use of semaphores as a locking primitive is discouraged,
> instead us a mutex.

Would you please look at the feedback I gave these guys to the
previous iteration of these changes?

They were using custom locking primitives and semaphores gave
the best approximation to the semantics they were looking for.

Thanks.
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