From: Anton Blanchard <anton@samba.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] powerpc: inline ppc64_runlatch_off
Date: Fri, 6 Aug 2010 16:51:12 +1000 [thread overview]
Message-ID: <20100806065112.GT29316@kryten> (raw)
In-Reply-To: <1281075949.2168.31.camel@pasglop>
Hi,
> remind me why we need to do that runlatch thing on these CPUs at all ?
The PMU uses it so events can be constructed that count only non idle cycles.
I think the power management hardware on POWER6 and POWER7 also use the
runlatch state to determine how busy a CPU is.
Anton
next prev parent reply other threads:[~2010-08-06 6:51 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-06 4:53 [PATCH] powerpc: inline ppc64_runlatch_off Anton Blanchard
2010-08-06 5:17 ` Benjamin Herrenschmidt
2010-08-06 5:56 ` Anton Blanchard
2010-08-06 6:25 ` Benjamin Herrenschmidt
2010-08-06 6:51 ` Anton Blanchard [this message]
2010-08-06 8:02 ` Olof Johansson
2010-08-06 13:28 ` Anton Blanchard
2010-08-09 2:44 ` Olof Johansson
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=20100806065112.GT29316@kryten \
--to=anton@samba.org \
--cc=benh@kernel.crashing.org \
--cc=linuxppc-dev@ozlabs.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.