From: Adrian Reber <adrian@lisas.de>
To: Arnd Bergmann <arnd@arndb.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
Milton Miller <miltonm@bga.com>,
linuxppc-dev@ozlabs.org, oprofile-list@lists.sourceforge.net,
cbe-oss-dev@ozlabs.org, Carl Love <cel@us.ibm.com>
Subject: Re: [Cbe-oss-dev] [RFC, PATCH] CELL Oprofile SPU profiling updated patch
Date: Thu, 8 Feb 2007 19:01:19 +0100 [thread overview]
Message-ID: <20070208180119.GA24743@lisas.de> (raw)
In-Reply-To: <200702081821.57358.arnd@arndb.de>
On Thu, Feb 08, 2007 at 06:21:56PM +0100, Arnd Bergmann wrote:
[...]
> Moving the sample rate computation to user space sounds like the right
> idea, but why not have a more drastic version of it:
>
> Right now, all products that support this feature run at the same clock
> rate (3.2 Ghz), with cpufreq, we can reduce this to 1.6 Ghz. If I understand
> this correctly, the value depends only on the frequency, so we could simply
> hardcode this in the kernel, and print out a warning message if we ever
> encounter a different frequency, right?
Just for the record... CAB is running with 2.8 GHz. At least all the boards
I have seen.
Adrian
WARNING: multiple messages have this Message-ID (diff)
From: Adrian Reber <adrian@lisas.de>
To: Arnd Bergmann <arnd@arndb.de>
Cc: cbe-oss-dev@ozlabs.org, linuxppc-dev@ozlabs.org,
oprofile-list@lists.sourceforge.net,
LKML <linux-kernel@vger.kernel.org>,
Milton Miller <miltonm@bga.com>, Carl Love <cel@us.ibm.com>
Subject: Re: [Cbe-oss-dev] [RFC, PATCH] CELL Oprofile SPU profiling updated patch
Date: Thu, 8 Feb 2007 19:01:19 +0100 [thread overview]
Message-ID: <20070208180119.GA24743@lisas.de> (raw)
In-Reply-To: <200702081821.57358.arnd@arndb.de>
On Thu, Feb 08, 2007 at 06:21:56PM +0100, Arnd Bergmann wrote:
[...]
> Moving the sample rate computation to user space sounds like the right
> idea, but why not have a more drastic version of it:
>
> Right now, all products that support this feature run at the same clock
> rate (3.2 Ghz), with cpufreq, we can reduce this to 1.6 Ghz. If I understand
> this correctly, the value depends only on the frequency, so we could simply
> hardcode this in the kernel, and print out a warning message if we ever
> encounter a different frequency, right?
Just for the record... CAB is running with 2.8 GHz. At least all the boards
I have seen.
Adrian
next prev parent reply other threads:[~2007-02-08 18:01 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-06 0:28 [RFC,PATCH] CELL PPU Oprofile SPU profiling updated patch Carl Love
2007-02-06 0:46 ` Paul Mackerras
2007-02-06 0:46 ` Paul Mackerras
2007-02-06 0:49 ` [Cbe-oss-dev] [RFC, PATCH] " Benjamin Herrenschmidt
2007-02-06 0:49 ` Benjamin Herrenschmidt
2007-02-06 23:02 ` [Cbe-oss-dev] [RFC, PATCH] CELL " Carl Love
2007-02-06 23:02 ` Carl Love
2007-02-07 15:41 ` Maynard Johnson
2007-02-07 15:41 ` Maynard Johnson
2007-02-07 22:48 ` Michael Ellerman
2007-02-07 22:48 ` Michael Ellerman
2007-02-08 15:03 ` Maynard Johnson
2007-02-08 15:03 ` Maynard Johnson
2007-02-08 14:18 ` Milton Miller
2007-02-08 14:18 ` Milton Miller
2007-02-08 17:21 ` Arnd Bergmann
2007-02-08 17:21 ` Arnd Bergmann
2007-02-08 18:01 ` Adrian Reber [this message]
2007-02-08 18:01 ` Adrian Reber
2007-02-08 22:51 ` Carl Love
2007-02-08 22:51 ` Carl Love
2007-02-09 2:46 ` Milton Miller
2007-02-09 2:46 ` Milton Miller
2007-02-09 16:17 ` Carl Love
2007-02-09 16:17 ` Carl Love
2007-02-11 22:46 ` Milton Miller
2007-02-11 22:46 ` Milton Miller
2007-02-12 16:38 ` Carl Love
2007-02-12 16:38 ` Carl Love
2007-02-09 18:47 ` Milton Miller
2007-02-09 18:47 ` Milton Miller
2007-02-09 19:10 ` Arnd Bergmann
2007-02-09 19:10 ` Arnd Bergmann
2007-02-09 19:46 ` Milton Miller
2007-02-09 19:46 ` Milton Miller
2007-02-08 23:59 ` Maynard Johnson
2007-02-08 23:59 ` Maynard Johnson
2007-02-09 18:03 ` Milton Miller
2007-02-09 18:03 ` Milton Miller
-- strict thread matches above, loose matches on Subject: below --
2007-02-14 23:52 Carl Love
2007-02-15 14:37 ` Arnd Bergmann
2007-02-15 14:37 ` Arnd Bergmann
2007-02-15 16:15 ` Maynard Johnson
2007-02-15 16:15 ` Maynard Johnson
2007-02-15 18:13 ` Arnd Bergmann
2007-02-15 18:13 ` Arnd Bergmann
2007-02-15 20:21 ` Carl Love
2007-02-15 20:21 ` Carl Love
2007-02-15 21:03 ` Arnd Bergmann
2007-02-15 21:03 ` Arnd Bergmann
2007-02-15 21:50 ` Paul E. McKenney
2007-02-15 21:50 ` Paul E. McKenney
2007-02-16 0:33 ` Arnd Bergmann
2007-02-16 0:33 ` Arnd Bergmann
2007-02-16 0:32 ` Maynard Johnson
2007-02-16 0:32 ` Maynard Johnson
2007-02-16 17:14 ` Arnd Bergmann
2007-02-16 17:14 ` Arnd Bergmann
2007-02-16 21:43 ` Maynard Johnson
2007-02-16 21:43 ` Maynard Johnson
2007-02-18 23:18 ` Maynard Johnson
2007-02-18 23:18 ` Maynard Johnson
2007-02-22 0:02 Carl Love
2007-02-26 23:50 ` Arnd Bergmann
2007-02-26 23:50 ` Arnd Bergmann
2007-02-27 1:31 ` Michael Ellerman
2007-02-27 1:31 ` Michael Ellerman
2007-02-27 16:52 ` Maynard Johnson
2007-02-27 16:52 ` Maynard Johnson
2007-02-28 1:44 ` Arnd Bergmann
2007-02-28 1:44 ` Arnd Bergmann
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=20070208180119.GA24743@lisas.de \
--to=adrian@lisas.de \
--cc=arnd@arndb.de \
--cc=cbe-oss-dev@ozlabs.org \
--cc=cel@us.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@ozlabs.org \
--cc=miltonm@bga.com \
--cc=oprofile-list@lists.sourceforge.net \
/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.