From: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: kernel-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org
Cc: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
Lee Jones <lee-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH V2] spi: bcm2835: enabling polling mode for transfers shorter than 30us
Date: Fri, 10 Apr 2015 19:51:32 +0100 [thread overview]
Message-ID: <20150410185132.GU6023@sirena.org.uk> (raw)
In-Reply-To: <1428340592-3196-1-git-send-email-kernel-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
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On Mon, Apr 06, 2015 at 05:16:30PM +0000, kernel-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org wrote:
> From: Martin Sperl <kernel-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
>
> In cases of short transfer times the CPU is spending lots of time
> in the interrupt handler and scheduler to reschedule the worker thread.
Applied, thanks.
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next prev parent reply other threads:[~2015-04-10 18:51 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-06 17:16 [PATCH V2] spi: bcm2835: enabling polling mode for transfers shorter than 30us kernel-TqfNSX0MhmxHKSADF0wUEw
[not found] ` <1428340592-3196-1-git-send-email-kernel-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
2015-04-10 18:51 ` Mark Brown [this message]
[not found] ` <20150410185132.GU6023-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-04-14 14:29 ` Martin Sperl
[not found] ` <F35B7C71-1917-40AE-BA42-CB3E63B877EF-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
2015-04-15 18:58 ` Mark Brown
[not found] ` <20150415185824.GU6023-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-04-15 19:33 ` Martin Sperl
[not found] ` <262B0C8C-7728-458E-8748-06F79251BE0C-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
2015-04-18 10:42 ` Mark Brown
[not found] ` <20150418104202.GA26185-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-04-18 11:12 ` Martin Sperl
[not found] ` <54169601-55F7-464C-8A0E-ABF833C0F3BA-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
2015-04-18 11:53 ` Mark Brown
[not found] ` <20150418115343.GI26185-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-04-18 12:13 ` Martin Sperl
[not found] ` <EB2DE44C-29CA-422D-A89C-4173E02A2CEF-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
2015-04-18 12:27 ` Mark Brown
[not found] ` <20150418122748.GO26185-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-04-18 13:31 ` Martin Sperl
[not found] ` <2DB27253-8254-4098-ADE3-9AA22D52BE9D-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
2015-04-18 17:07 ` Mark Brown
[not found] ` <20150418170756.GX26185-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2015-04-19 9:44 ` Martin Sperl
[not found] ` <E9247B42-11B6-4032-A6C1-1FCEA3EDA2A6-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
2015-04-22 7:33 ` [PATCH] spi: bcm2835: fallback to interrupt for polling timeouts exceeding 2 jiffies kernel-TqfNSX0MhmxHKSADF0wUEw
[not found] ` <1429687984-7350-1-git-send-email-kernel-TqfNSX0MhmxHKSADF0wUEw@public.gmane.org>
2015-04-22 19:50 ` Mark Brown
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