From: Nathan Fontenot <nfont@austin.ibm.com>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linuxppc-dev@ozlabs.org
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>, greg@kroah.com
Subject: [PATCH 6/8] v3 Update the node sysfs code
Date: Mon, 19 Jul 2010 22:57:35 -0500 [thread overview]
Message-ID: <4C451EAF.1080505@austin.ibm.com> (raw)
In-Reply-To: <4C451BF5.50304@austin.ibm.com>
Update the node sysfs code to be aware of the new capability for a memory
block to contain multiple memory sections. This requires an additional
parameter to unregister_mem_sect_under_nodes so that we know which memory
section of the memory block to unregister.
Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
---
drivers/base/memory.c | 2 +-
drivers/base/node.c | 12 ++++++++----
include/linux/node.h | 3 ++-
3 files changed, 11 insertions(+), 6 deletions(-)
Index: linux-2.6/drivers/base/node.c
===================================================================
--- linux-2.6.orig/drivers/base/node.c 2010-07-19 21:10:25.000000000 -0500
+++ linux-2.6/drivers/base/node.c 2010-07-19 21:13:11.000000000 -0500
@@ -346,8 +346,10 @@ int register_mem_sect_under_node(struct
return -EFAULT;
if (!node_online(nid))
return 0;
- sect_start_pfn = section_nr_to_pfn(mem_blk->phys_index);
- sect_end_pfn = sect_start_pfn + PAGES_PER_SECTION - 1;
+
+ sect_start_pfn = section_nr_to_pfn(mem_blk->start_phys_index);
+ sect_end_pfn = section_nr_to_pfn(mem_blk->end_phys_index);
+ sect_end_pfn += PAGES_PER_SECTION - 1;
for (pfn = sect_start_pfn; pfn <= sect_end_pfn; pfn++) {
int page_nid;
@@ -371,7 +373,8 @@ int register_mem_sect_under_node(struct
}
/* unregister memory section under all nodes that it spans */
-int unregister_mem_sect_under_nodes(struct memory_block *mem_blk)
+int unregister_mem_sect_under_nodes(struct memory_block *mem_blk,
+ unsigned long phys_index)
{
NODEMASK_ALLOC(nodemask_t, unlinked_nodes, GFP_KERNEL);
unsigned long pfn, sect_start_pfn, sect_end_pfn;
@@ -383,7 +386,8 @@ int unregister_mem_sect_under_nodes(stru
if (!unlinked_nodes)
return -ENOMEM;
nodes_clear(*unlinked_nodes);
- sect_start_pfn = section_nr_to_pfn(mem_blk->phys_index);
+
+ sect_start_pfn = section_nr_to_pfn(phys_index);
sect_end_pfn = sect_start_pfn + PAGES_PER_SECTION - 1;
for (pfn = sect_start_pfn; pfn <= sect_end_pfn; pfn++) {
int nid;
Index: linux-2.6/drivers/base/memory.c
===================================================================
--- linux-2.6.orig/drivers/base/memory.c 2010-07-19 21:12:22.000000000 -0500
+++ linux-2.6/drivers/base/memory.c 2010-07-19 21:13:11.000000000 -0500
@@ -550,9 +550,9 @@ int remove_memory_block(unsigned long no
mem = find_memory_block(section);
atomic_dec(&mem->section_count);
+ unregister_mem_sect_under_nodes(mem, __section_nr(section));
if (atomic_read(&mem->section_count) == 0) {
- unregister_mem_sect_under_nodes(mem);
mem_remove_simple_file(mem, start_phys_index);
mem_remove_simple_file(mem, end_phys_index);
mem_remove_simple_file(mem, state);
Index: linux-2.6/include/linux/node.h
===================================================================
--- linux-2.6.orig/include/linux/node.h 2010-07-19 21:10:25.000000000 -0500
+++ linux-2.6/include/linux/node.h 2010-07-19 21:13:11.000000000 -0500
@@ -44,7 +44,8 @@ extern int register_cpu_under_node(unsig
extern int unregister_cpu_under_node(unsigned int cpu, unsigned int nid);
extern int register_mem_sect_under_node(struct memory_block *mem_blk,
int nid);
-extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk);
+extern int unregister_mem_sect_under_nodes(struct memory_block *mem_blk,
+ unsigned long phys_index);
#ifdef CONFIG_HUGETLBFS
extern void register_hugetlbfs_with_node(node_registration_func_t doregister,
--
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next prev parent reply other threads:[~2010-07-20 3:57 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-20 3:45 [PATCH 0/8] v3 De-couple sysfs memory directories from memory sections Nathan Fontenot
2010-07-20 3:51 ` [PATCH 1/8] v3 Move the find_memory_block() routine up Nathan Fontenot
2010-07-20 6:55 ` KAMEZAWA Hiroyuki
2010-07-20 3:52 ` [PATCH 2/8] v3 Add new phys_index properties Nathan Fontenot
2010-07-20 6:57 ` KAMEZAWA Hiroyuki
2010-07-20 13:24 ` Nathan Fontenot
2010-07-20 19:10 ` Dave Hansen
2010-07-20 3:53 ` [PATCH 3/8] v3 Add section count to memory_block Nathan Fontenot
2010-07-20 7:01 ` KAMEZAWA Hiroyuki
2010-07-20 13:26 ` Nathan Fontenot
2010-07-20 3:55 ` [PATCH 4/8] v3 Allow memory_block to span multiple memory sections Nathan Fontenot
2010-07-20 7:15 ` KAMEZAWA Hiroyuki
2010-07-20 13:28 ` Nathan Fontenot
2010-07-20 19:18 ` Dave Hansen
2010-07-24 3:09 ` Nathan Fontenot
2010-07-27 2:36 ` Dave Hansen
2010-07-26 19:10 ` Nathan Fontenot
2010-07-20 19:21 ` Dave Hansen
2010-07-20 3:56 ` [PATCH 5/8] v3 Update the find_memory_block declaration Nathan Fontenot
2010-07-20 7:16 ` KAMEZAWA Hiroyuki
2010-07-20 3:57 ` Nathan Fontenot [this message]
2010-07-20 7:17 ` [PATCH 6/8] v3 Update the node sysfs code KAMEZAWA Hiroyuki
2010-07-28 13:50 ` Brian King
2010-07-20 3:59 ` [PATCH 7/8] v3 Define memory_block_size_bytes() for ppc/pseries Nathan Fontenot
2010-07-21 20:27 ` Brian King
2010-07-20 3:59 ` [PATCH 8/8] v3 Update memory-hotplug documentation Nathan Fontenot
2010-07-20 19:23 ` Dave Hansen
2010-07-31 5:36 ` [PATCH 0/8] v3 De-couple sysfs memory directories from memory sections Benjamin Herrenschmidt
2010-07-31 19:55 ` Greg KH
2010-08-01 0:27 ` Benjamin Herrenschmidt
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