From mboxrd@z Thu Jan 1 00:00:00 1970 From: broonie@kernel.org (Mark Brown) Date: Thu, 7 Jul 2016 11:50:34 +0200 Subject: SPI: performance regression when using the common message queuing infrastructure In-Reply-To: <577CD464.6050506@atmel.com> References: <577CD464.6050506@atmel.com> Message-ID: <20160707095034.GL6247@sirena.org.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Wed, Jul 06, 2016 at 11:50:28AM +0200, Cyrille Pitchen wrote: > So do you recommend us to keep our current generic implementation relying on > the SPI framework workqueue or to go back to a custom implementation using > tasklet? > If we keep the current implementation, is there a way to improve the > performances so we go back to something close to what he had before? I'd suggest trying to implement whatever it is that your customm implementation was doing in the core, having individual drivers trying to open code the message pump is obviously not sensible. If what you're doing makes your controllers run faster it'll probably make everyone else's run faster too. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 473 bytes Desc: not available URL: