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| author | Robin Holt <holt@sgi.com> | 2010-09-29 23:00:55 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-22 21:16:44 +0400 |
| commit | 98383031ed77c6eb49ab612166fef9c0efe1604a (patch) | |
| tree | d34a428c6f52f2982b63d68152a1e29ec2ca9bc0 | |
| parent | c25d1dfbd403209025df41a737f82ce8f43d93f5 (diff) | |
| download | linux-98383031ed77c6eb49ab612166fef9c0efe1604a.tar.xz | |
driver core: Introduce find_memory_block_hinted which utilizes kset_find_obj_hinted.
Introduce a find_memory_block_hinted() which utilizes the
recently added kset_find_obj_hinted().
Signed-off-by: Robin Holt <holt@sgi.com>
To: Dave Hansen <haveblue@us.ibm.com>
To: Matt Tolentino <matthew.e.tolentino@intel.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/base/memory.c | 28 | ||||
| -rw-r--r-- | include/linux/memory.h | 2 |
2 files changed, 20 insertions, 10 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 933442f40321..a7994409b9a5 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -468,28 +468,23 @@ static int add_memory_block(int nid, struct mem_section *section, return ret; } -/* - * For now, we have a linear search to go find the appropriate - * memory_block corresponding to a particular phys_index. If - * this gets to be a real problem, we can always use a radix - * tree or something here. - * - * This could be made generic for all sysdev classes. - */ -struct memory_block *find_memory_block(struct mem_section *section) +struct memory_block *find_memory_block_hinted(struct mem_section *section, + struct memory_block *hint) { struct kobject *kobj; struct sys_device *sysdev; struct memory_block *mem; char name[sizeof(MEMORY_CLASS_NAME) + 9 + 1]; + kobj = hint ? &hint->sysdev.kobj : NULL; + /* * This only works because we know that section == sysdev->id * slightly redundant with sysdev_register() */ sprintf(&name[0], "%s%d", MEMORY_CLASS_NAME, __section_nr(section)); - kobj = kset_find_obj(&memory_sysdev_class.kset, name); + kobj = kset_find_obj_hinted(&memory_sysdev_class.kset, name, kobj); if (!kobj) return NULL; @@ -499,6 +494,19 @@ struct memory_block *find_memory_block(struct mem_section *section) return mem; } +/* + * For now, we have a linear search to go find the appropriate + * memory_block corresponding to a particular phys_index. If + * this gets to be a real problem, we can always use a radix + * tree or something here. + * + * This could be made generic for all sysdev classes. + */ +struct memory_block *find_memory_block(struct mem_section *section) +{ + return find_memory_block_hinted(section, NULL); +} + int remove_memory_block(unsigned long node_id, struct mem_section *section, int phys_device) { diff --git a/include/linux/memory.h b/include/linux/memory.h index 85582e1bcee9..c4f3127dbd48 100644 --- a/include/linux/memory.h +++ b/include/linux/memory.h @@ -113,6 +113,8 @@ extern int memory_dev_init(void); extern int remove_memory_block(unsigned long, struct mem_section *, int); extern int memory_notify(unsigned long val, void *v); extern int memory_isolate_notify(unsigned long val, void *v); +extern struct memory_block *find_memory_block_hinted(struct mem_section *, + struct memory_block *); extern struct memory_block *find_memory_block(struct mem_section *); #define CONFIG_MEM_BLOCK_SIZE (PAGES_PER_SECTION<<PAGE_SHIFT) enum mem_add_context { BOOT, HOTPLUG }; |