From: Benjamin Herrenschmidt <benh-XVmvHMARGAS8U2dJNN8I7kB+6BGkLq7r@public.gmane.org>
To: Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
Cc: devicetree-discuss
<devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
Eric Miao <eric.miao-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>,
Jeremy Kerr <jeremy.kerr-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: Regarding hw irq to Linux irq mapping on ARM
Date: Wed, 22 Sep 2010 15:31:21 +1000 [thread overview]
Message-ID: <1285133481.30449.170.camel@pasglop> (raw)
In-Reply-To: <AANLkTinrfJkK85v2epOY95YWaVyMBcxSF2xakHqsM7vh-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Wed, 2010-09-22 at 00:08 -0300, Grant Likely wrote:
> > Add all the I2C, SPI based irq extenders to that list. They seem to
> > pop up all over the place in rapid speed even in x86. We are happy
> > citizens of the embedded horror^Wuniverse now.
>
> *shudder*
>
> What's the irq handling latency on those? Glad I haven't had to deal
> with any of them yet.
And i2c in many cases want to be called from sleep'able context... might
be a good idea to restrict some of these to threaded interrupts. A whole
different discussion I suppose.
Cheers,
Ben.
next prev parent reply other threads:[~2010-09-22 5:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <AANLkTi=6nCJnfLB1uc0uLGOvOm0CX_R=j-8GQWTzmmep@mail.gmail.com>
[not found] ` <AANLkTi=6nCJnfLB1uc0uLGOvOm0CX_R=j-8GQWTzmmep-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-09-21 19:57 ` Regarding hw irq to Linux irq mapping on ARM Grant Likely
[not found] ` <AANLkTimp7+BLNBwZyBiPS0JgB_mno+gp8+mK=VdOd3+_-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-09-21 21:45 ` Thomas Gleixner
[not found] ` <alpine.LFD.2.00.1009212342580.2416-bi+AKbBUZKagILUCTcTcHdKyNwTtLsGr@public.gmane.org>
2010-09-22 3:08 ` Grant Likely
[not found] ` <AANLkTinrfJkK85v2epOY95YWaVyMBcxSF2xakHqsM7vh-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-09-22 5:31 ` Benjamin Herrenschmidt [this message]
2010-09-22 8:59 ` Eric Miao
2010-09-22 10:51 ` Mark Brown
2010-09-22 10:54 ` Mark Brown
2010-09-21 22:02 ` Benjamin Herrenschmidt
2010-09-22 3:06 ` Grant Likely
2010-09-22 11:00 ` Shaju Abraham
[not found] ` <AANLkTik6Nwt3O9hG971nzzEtiCLobSaWasZ4hjWCketh-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-09-22 11:52 ` Grant Likely
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1285133481.30449.170.camel@pasglop \
--to=benh-xvmvhmargas8u2djnn8i7kb+6bgklq7r@public.gmane.org \
--cc=devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org \
--cc=eric.miao-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org \
--cc=grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org \
--cc=jeremy.kerr-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org \
--cc=linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org \
--cc=tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox