From: Arnd Bergmann <arnd@arndb.de>
To: michal.simek@petalogix.com
Cc: wuzhangjin@gmail.com, Steven Rostedt <rostedt@goodmis.org>,
Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: sched_clock - microblaze
Date: Thu, 15 Apr 2010 21:52:03 +0200 [thread overview]
Message-ID: <201004152152.03883.arnd@arndb.de> (raw)
In-Reply-To: <4BC76917.9060604@petalogix.com>
On Thursday 15 April 2010 21:29:27 Michal Simek wrote:
> > sched_clock() {
> > ftrace_stop();
> > printk(...);
> > ftrace_start();
> > ...
> > }
>
> But I am describing different problem. sched_clock is called before
> kernel initialized timers. Microblaze takes all information from DTS
> that's means that I am not able to read timer because I even don't know
> where it is. :-(
You could make sched_clock return zero before the clock is probed, it
is very unlikely to be needed before that anyway.
Arnd
next prev parent reply other threads:[~2010-04-15 19:52 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-15 14:55 sched_clock - microblaze Michal Simek
2010-04-15 15:04 ` Steven Rostedt
2010-04-15 16:32 ` Michal Simek
2010-04-15 18:12 ` Wu Zhangjin
2010-04-15 19:29 ` Michal Simek
2010-04-15 19:52 ` Arnd Bergmann [this message]
2010-04-16 6:23 ` Michal Simek
2010-04-16 8:37 ` Arnd Bergmann
2010-04-16 9:11 ` Michal Simek
2010-04-15 15:06 ` Steven J. Magnani
2010-04-15 16:21 ` Michal Simek
2010-04-15 18:26 ` Thomas Gleixner
2010-04-15 17:18 ` Wu Zhangjin
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=201004152152.03883.arnd@arndb.de \
--to=arnd@arndb.de \
--cc=linux-kernel@vger.kernel.org \
--cc=michal.simek@petalogix.com \
--cc=rostedt@goodmis.org \
--cc=tglx@linutronix.de \
--cc=wuzhangjin@gmail.com \
/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.