From: Paul Clarke <pc@us.ibm.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
linuxppc-dev@ozlabs.org
Cc: Jeremy Kerr <jeremy.kerr@au1.ibm.com>
Subject: Re: [PATCH] powerpc/powernv: Support OPAL requested heartbeat
Date: Thu, 13 Nov 2014 10:59:52 -0600 [thread overview]
Message-ID: <5464E388.6060507@us.ibm.com> (raw)
In-Reply-To: <1415772194.5124.37.camel@kernel.crashing.org>
On 11/12/2014 12:03 AM, Benjamin Herrenschmidt wrote:
> If OPAL requests it, call it back via opal_poll_events() at a
> regular interval. Some versions of OPAL on some machines require
> this to operate some internal timeouts properly.
I don't see any reason why not, but wanted to ask to make sure: this
daemon can be bound to a core, correct? At least manually by taskset or
similar?
It sounds a lot like the RTAS thread, which I was happy to see go away
when running directly on OPAL, and don't want something else to take its
place. It was not bindable, but ran periodically on EVERY core, err
hardware thread.
(Just looking to avoid latency blips.)
PC
next prev parent reply other threads:[~2014-11-13 17:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-12 6:03 [PATCH] powerpc/powernv: Support OPAL requested heartbeat Benjamin Herrenschmidt
2014-11-13 5:29 ` Michael Ellerman
2014-11-13 6:42 ` Benjamin Herrenschmidt
2014-11-13 6:46 ` Jeremy Kerr
2014-11-13 16:59 ` Paul Clarke [this message]
2014-11-13 20:35 ` [PATCH] " Benjamin Herrenschmidt
2014-11-14 3:01 ` Alistair Popple
2014-11-14 4:26 ` Benjamin Herrenschmidt
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