linux-kernel - Re: [PATCH RFC 11/18] staging: vchiq_arm: use completions instead of semaphores

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Date:   Sun, 28 Oct 2018 22:00:10 +0100 (CET)
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>, eric@...olt.net,
        dave.stevenson@...pberrypi.org
Cc:     linux-rpi-kernel@...ts.infradead.org, gregkh@...uxfoundation.org,
        linux-arm-kernel@...ts.infradead.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC 11/18] staging: vchiq_arm: use completions instead
 of semaphores

> Nicolas Saenz Julienne <nsaenzjulienne@...e.de> hat am 26. Oktober 2018 um 15:48 geschrieben:
> 
> 
> It is preferred in the kernel to avoid using semaphores to wait for
> events, as they are optimised for the opposite situation; where the
> common case is that they are available and may block only occasionally.
> FYI see this thread: https://lkml.org/lkml/2008/4/11/323.
> 
> Also completions are semantically more explicit in this case.
> 

Since patch #11 #12 and #13 doing the same, they could be fold.