From: Yasunori Goto <y-goto@jp.fujitsu.com>
To: "Luck, Tony" <tony.luck@intel.com>, Andi Kleen <ak@suse.de>,
Joel Schopp <jschopp@austin.ibm.com>,
Dave Hansen <haveblue@us.ibm.com>
Cc: linux-ia64@vger.kernel.org,
Linux Kernel ML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>, Andrew Morton <akpm@osdl.org>
Subject: [PATCH: 017/017](RFC) Memory hotplug for new nodes v.3. (arch_register_node() for ia64)
Date: Wed, 08 Mar 2006 22:43:12 +0900 [thread overview]
Message-ID: <20060308214141.0044.Y-GOTO@jp.fujitsu.com> (raw)
This is to create sysfs file for new node.
It adds arch specific functions 'arch_register_node()'
and 'arch_unregister_node()' to IA64 to call the generic
function 'register_node()' and 'unregister_node()' respectively.
(Each arch defines like sysfs_nodes[] to describe its nodes
topology. I'm not sure they can be merged as generic code.)
Signed-off-by: Keiichiro Tokunaga <tokuanga.keiich@jp.fujitsu.com>
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Index: pgdat6/arch/ia64/kernel/topology.c
===================================================================
--- pgdat6.orig/arch/ia64/kernel/topology.c 2006-03-06 18:25:31.000000000 +0900
+++ pgdat6/arch/ia64/kernel/topology.c 2006-03-06 18:26:33.000000000 +0900
@@ -65,6 +65,21 @@ EXPORT_SYMBOL(arch_register_cpu);
EXPORT_SYMBOL(arch_unregister_cpu);
#endif /*CONFIG_HOTPLUG_CPU*/
+#ifdef CONFIG_NUMA
+int arch_register_node(int num)
+{
+ if (sysfs_nodes[num].sysdev.id == num)
+ return 0;
+
+ return register_node(&sysfs_nodes[num], num, 0);
+}
+
+void arch_unregister_node(int num)
+{
+ unregister_node(&sysfs_nodes[num]);
+ sysfs_nodes[num].sysdev.id = -1;
+}
+#endif
static int __init topology_init(void)
{
Index: pgdat6/include/asm-ia64/numa.h
===================================================================
--- pgdat6.orig/include/asm-ia64/numa.h 2006-03-06 18:24:01.000000000 +0900
+++ pgdat6/include/asm-ia64/numa.h 2006-03-06 18:26:33.000000000 +0900
@@ -23,6 +23,9 @@
#include <asm/mmzone.h>
+extern int arch_register_node(int num);
+extern void arch_unregister_node(int num);
+
extern u8 cpu_to_node_map[NR_CPUS] __cacheline_aligned;
extern cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned;
--
Yasunori Goto
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
reply other threads:[~2006-03-08 13:43 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=20060308214141.0044.Y-GOTO@jp.fujitsu.com \
--to=y-goto@jp.fujitsu.com \
--cc=ak@suse.de \
--cc=akpm@osdl.org \
--cc=haveblue@us.ibm.com \
--cc=jschopp@austin.ibm.com \
--cc=linux-ia64@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=tony.luck@intel.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox