From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: Question: ARM: local timers: add num_possible_cpus() in local_timer_register()
Date: Mon, 14 Jan 2013 13:35:44 +0000 [thread overview]
Message-ID: <20130114133543.GD23505@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20130114133345.GA26701@android11.spreadtrum.com>
On Mon, Jan 14, 2013 at 09:33:45PM +0800, Steve zhan wrote:
> Hi Marc,
>
> Do you think we should add num_possible_cpus() in
> local_timer_register() function, When core number is
> > 1, then reutrn TRUE? Enable the local timer only if
> we have more than one CPU, if the current config is
> SMP and setup_max_cpus >= 1, but if smp_init_cpus in
> platform code have set cpu possible value to One(that
> maybe read number from scu or other hardware), then
> percpu_timer_setup in smp_prepare_cpus have no chance
> to be called.
>
> For local timer, because local_timer_register have
> return 1, that will miss global timer register.
What about platforms where all they have are the local timers and no
global timer?
next prev parent reply other threads:[~2013-01-14 13:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-14 13:33 Question: ARM: local timers: add num_possible_cpus() in local_timer_register() Steve zhan
2013-01-14 13:35 ` Russell King - ARM Linux [this message]
2013-01-14 14:19 ` Marc Zyngier
2013-01-14 14:31 ` steve.zhan
2013-01-14 15:21 ` Marc Zyngier
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=20130114133543.GD23505@n2100.arm.linux.org.uk \
--to=linux@arm.linux.org.uk \
--cc=linux-arm-kernel@lists.infradead.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.