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mm, oom: Try to online memory block before killing

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Before killing a process first try to see if there are any offlined
memory blocks, if there are try to online one of them.

Change-Id: Ie97c8b69f0ba173c202a891a38a5c914869ddaae
Signed-off-by: Liam Mark <lmark@codeaurora.org>
[isaacm@codeaurora.org: Update walk_memory_range to walk_memory_blocks]
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>
This commit is contained in:
Liam Mark
2018-05-23 10:56:12 -07:00
committed by Isaac J. Manjarres
parent d62cabc403
commit c5d41d1162
3 changed files with 47 additions and 0 deletions
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6
include/linux/memory_hotplug.h
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@@ -110,6 +110,7 @@ extern void __online_page_increment_counters(struct page *page);
extern void __online_page_free(struct page *page);
extern int try_online_node(int nid);
extern bool try_online_one_block(int nid);
extern int arch_add_memory(int nid, u64 start, u64 size,
struct mhp_restrictions *restrictions);
@@ -269,6 +270,11 @@ static inline int try_online_node(int nid)
return 0;
}
static inline bool try_online_one_block(int nid)
{
return false;
}
static inline void get_online_mems(void) {}
static inline void put_online_mems(void) {}