From: Cody P Schafer <cody@linux.vnet.ibm.com>
To: Linux MM <linux-mm@kvack.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Cody P Schafer <cody@linux.vnet.ibm.com>,
Simon Jeons <simon.jeons@gmail.com>
Subject: [RFC PATCH v3 03/31] mm/memory_hotplug: factor out zone+pgdat growth.
Date: Thu, 2 May 2013 17:00:35 -0700 [thread overview]
Message-ID: <1367539263-19999-4-git-send-email-cody@linux.vnet.ibm.com> (raw)
In-Reply-To: <1367539263-19999-1-git-send-email-cody@linux.vnet.ibm.com>
Create a new function grow_pgdat_and_zone() which handles locking +
growth of a zone & the pgdat which it is associated with.
Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
---
include/linux/memory_hotplug.h | 3 +++
mm/memory_hotplug.c | 17 +++++++++++------
2 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index 3e622c6..501e9f0 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -78,6 +78,9 @@ static inline void zone_seqlock_init(struct zone *zone)
{
seqlock_init(&zone->span_seqlock);
}
+extern void grow_pgdat_and_zone(struct zone *zone, unsigned long start_pfn,
+ unsigned long end_pfn);
+
extern int zone_grow_free_lists(struct zone *zone, unsigned long new_nr_pages);
extern int zone_grow_waitqueues(struct zone *zone, unsigned long nr_pages);
extern int add_one_highpage(struct page *page, int pfn, int bad_ppro);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index a221fac..fafeaae 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -390,13 +390,22 @@ static void grow_pgdat_span(struct pglist_data *pgdat, unsigned long start_pfn,
pgdat->node_start_pfn;
}
+void grow_pgdat_and_zone(struct zone *zone, unsigned long start_pfn,
+ unsigned long end_pfn)
+{
+ unsigned long flags;
+ pgdat_resize_lock(zone->zone_pgdat, &flags);
+ grow_zone_span(zone, start_pfn, end_pfn);
+ grow_pgdat_span(zone->zone_pgdat, start_pfn, end_pfn);
+ pgdat_resize_unlock(zone->zone_pgdat, &flags);
+}
+
static int __meminit __add_zone(struct zone *zone, unsigned long phys_start_pfn)
{
struct pglist_data *pgdat = zone->zone_pgdat;
int nr_pages = PAGES_PER_SECTION;
int nid = pgdat->node_id;
int zone_type;
- unsigned long flags;
int ret;
zone_type = zone - pgdat->node_zones;
@@ -404,11 +413,7 @@ static int __meminit __add_zone(struct zone *zone, unsigned long phys_start_pfn)
if (ret)
return ret;
- pgdat_resize_lock(zone->zone_pgdat, &flags);
- grow_zone_span(zone, phys_start_pfn, phys_start_pfn + nr_pages);
- grow_pgdat_span(zone->zone_pgdat, phys_start_pfn,
- phys_start_pfn + nr_pages);
- pgdat_resize_unlock(zone->zone_pgdat, &flags);
+ grow_pgdat_and_zone(zone, phys_start_pfn, phys_start_pfn + nr_pages);
memmap_init_zone(nr_pages, nid, zone_type,
phys_start_pfn, MEMMAP_HOTPLUG);
return 0;
--
1.8.2.2
next prev parent reply other threads:[~2013-05-03 0:01 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-03 0:00 [RFC PATCH v3 00/31] Dynamic NUMA: Runtime NUMA memory layout reconfiguration Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 01/31] rbtree: add postorder iteration functions Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 02/31] rbtree: add rbtree_postorder_for_each_entry_safe() helper Cody P Schafer
2013-05-03 0:00 ` Cody P Schafer [this message]
2013-05-03 0:00 ` [RFC PATCH v3 04/31] memory_hotplug: export ensure_zone_is_initialized() in mm/internal.h Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 05/31] mm/memory_hotplug: use {pgdat,zone}_is_empty() when resizing zones & pgdats Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 06/31] mm: add nid_zone() helper Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 07/31] mm: Add Dynamic NUMA Kconfig Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 08/31] page_alloc: add return_pages_to_zone() when DYNAMIC_NUMA is enabled Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 09/31] page_alloc: in move_freepages(), skip pages instead of VM_BUG on node differences Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 10/31] page_alloc: when dynamic numa is enabled, don't check that all pages in a block belong to the same zone Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 11/31] page-flags dnuma: reserve a pageflag for determining if a page needs a node lookup Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 12/31] memory_hotplug: factor out locks in mem_online_cpu() Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 13/31] mm: add memlayout & dnuma to track pfn->nid & transplant pages between nodes Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 14/31] mm: memlayout+dnuma: add debugfs interface Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 15/31] drivers/base/memory.c: alphabetize headers Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 16/31] drivers/base/node,memory: rename function to match interface Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 17/31] drivers/base/node: rename unregister_mem_blk_under_nodes() to be more acurate Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 18/31] drivers/base/node: add unregister_mem_block_under_nodes() Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 19/31] mm: memory,memlayout: add refresh_memory_blocks() for Dynamic NUMA Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 20/31] page_alloc: use dnuma to transplant newly freed pages in __free_pages_ok() Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 21/31] page_alloc: use dnuma to transplant newly freed pages in free_hot_cold_page() Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 22/31] page_alloc: transplant pages that are being flushed from the per-cpu lists Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 23/31] x86: memlayout: add a arch specific inital memlayout setter Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 24/31] init/main: call memlayout_global_init() in start_kernel() Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 25/31] dnuma: memlayout: add memory_add_physaddr_to_nid() for memory_hotplug Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 26/31] x86/mm/numa: when dnuma is enabled, use memlayout to handle memory hotplug's physaddr_to_nid Cody P Schafer
2013-05-03 0:00 ` [RFC PATCH v3 27/31] mm/memory_hotplug: VM_BUG if nid is too large Cody P Schafer
2013-05-03 0:01 ` [RFC PATCH v3 28/31] mm/page_alloc: in page_outside_zone_boundaries(), avoid premature decisions Cody P Schafer
2013-05-03 0:01 ` [RFC PATCH v3 29/31] mm/page_alloc: make pr_err() in page_outside_zone_boundaries() more useful Cody P Schafer
2013-05-03 0:01 ` [RFC PATCH v3 30/31] mm/page_alloc: use manage_pages instead of present pages when calculating default_zonelist_order() Cody P Schafer
2013-05-03 0:01 ` [RFC PATCH v3 31/31] mm: add a early_param "extra_nr_node_ids" to increase nr_node_ids above the minimum by a percentage Cody P Schafer
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=1367539263-19999-4-git-send-email-cody@linux.vnet.ibm.com \
--to=cody@linux.vnet.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=simon.jeons@gmail.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;
as well as URLs for NNTP newsgroup(s).