lkml.org 
[lkml]   [2013]   [Jul]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/1] Drivers: base: memory: Export symbols for onlining memory blocks
Date
The current machinery for hot-adding memory requires having udev
rules to bring the memory segments online. Export the necessary functionality
to to bring the memory segment online without involving user space code.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
---
drivers/base/memory.c | 5 ++++-
include/linux/memory.h | 4 ++++
2 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 2b7813e..a8204ac 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -328,7 +328,7 @@ static int __memory_block_change_state_uevent(struct memory_block *mem,
return ret;
}

-static int memory_block_change_state(struct memory_block *mem,
+int memory_block_change_state(struct memory_block *mem,
unsigned long to_state, unsigned long from_state_req,
int online_type)
{
@@ -341,6 +341,8 @@ static int memory_block_change_state(struct memory_block *mem,

return ret;
}
+EXPORT_SYMBOL(memory_block_change_state);
+
static ssize_t
store_mem_state(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
@@ -540,6 +542,7 @@ struct memory_block *find_memory_block(struct mem_section *section)
{
return find_memory_block_hinted(section, NULL);
}
+EXPORT_SYMBOL(find_memory_block);

static struct attribute *memory_memblk_attrs[] = {
&dev_attr_phys_index.attr,
diff --git a/include/linux/memory.h b/include/linux/memory.h
index 85c31a8..8e3ede5 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -115,6 +115,10 @@ extern void unregister_memory_notifier(struct notifier_block *nb);
extern int register_memory_isolate_notifier(struct notifier_block *nb);
extern void unregister_memory_isolate_notifier(struct notifier_block *nb);
extern int register_new_memory(int, struct mem_section *);
+extern int memory_block_change_state(struct memory_block *mem,
+ unsigned long to_state, unsigned long from_state_req,
+ int online_type);
+
#ifdef CONFIG_MEMORY_HOTREMOVE
extern int unregister_memory_section(struct mem_section *);
#endif
--
1.7.4.1


\
 
 \ /
  Last update: 2013-07-19 21:21    [W:0.099 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site