From: Arnd Bergmann <arnd@arndb•de>
To: Segher Boessenkool <segher@kernel•crashing.org>
Cc: linuxppc-dev@ozlabs•org
Subject: Re: [RFC/PATCH 4/4] Add support for MSI on Axon-based Cell systems
Date: Fri, 8 Jun 2007 22:06:55 +0200 [thread overview]
Message-ID: <200706082206.55380.arnd@arndb.de> (raw)
In-Reply-To: <34656f27cfbc4a091e08526b42969ec1@kernel.crashing.org>
On Friday 08 June 2007, Segher Boessenkool wrote:
> > That wasn't my question though?
>=20
> Oh wait. =A0You're saying for_each_compatible_node() does
> a put() on all nodes it traverses, but no get()? =A0Ouch!
No, just read the code, it does exactly the right thing.
If you do
for_each_compatible_node(node, NULL, "foo") {
do_something(node);
}
then the reference count is held just as long as the do_something()
function is run, and if you do
for_each_compatible_node(node, NULL, "foo")
if (conditional_func(node))
break;
then the node variable will have the reference count.
Arnd <><
next prev parent reply other threads:[~2007-06-08 20:06 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-04 12:59 [PATCH 1/4] Split virq setup logic out into irq_setup_virq() Michael Ellerman
2007-06-04 13:00 ` [PATCH 2/4] Add irq_create_direct_mapping() Michael Ellerman
2007-06-04 22:44 ` Benjamin Herrenschmidt
2007-06-04 13:00 ` [PATCH 3/4] Add for_each_compatible_node() Michael Ellerman
2007-06-04 22:44 ` Benjamin Herrenschmidt
2007-06-04 13:00 ` [RFC/PATCH 4/4] Add support for MSI on Axon-based Cell systems Michael Ellerman
2007-06-04 17:09 ` Arnd Bergmann
2007-06-04 17:12 ` Arnd Bergmann
2007-06-08 2:53 ` Michael Ellerman
2007-06-08 8:47 ` Segher Boessenkool
2007-06-08 19:26 ` Arnd Bergmann
2007-06-08 19:36 ` Segher Boessenkool
2007-06-08 19:59 ` Segher Boessenkool
2007-06-08 20:06 ` Arnd Bergmann [this message]
2007-06-08 20:16 ` Segher Boessenkool
2007-06-12 2:32 ` Michael Ellerman
2007-06-08 20:01 ` Arnd Bergmann
2007-06-08 20:06 ` Segher Boessenkool
2007-06-12 2:30 ` Michael Ellerman
2007-06-04 22:45 ` Benjamin Herrenschmidt
2007-06-05 7:00 ` Jean-Christophe Dubois
2007-06-05 9:16 ` Arnd Bergmann
2007-06-05 9:29 ` Jean-Christophe Dubois
2007-06-05 9:30 ` Arnd Bergmann
2007-06-07 7:58 ` Michael Ellerman
2007-06-07 8:10 ` Jean-Christophe Dubois
2007-06-07 11:55 ` Benjamin Herrenschmidt
2007-06-07 12:00 ` Jean-Christophe Dubois
2007-06-05 14:12 ` Milton Miller
2007-06-06 5:19 ` Michael Ellerman
2007-06-04 22:43 ` [PATCH 1/4] Split virq setup logic out into irq_setup_virq() Benjamin Herrenschmidt
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