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Commit 9a2809ba authored by Isaac J. Manjarres's avatar Isaac J. Manjarres
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mm/oom_kill: Online memory before running oom-killer 



Attempt to online memory before invoking the oom-killer
to alleviate the memory pressure in the system as quickly
as possible, without sacrificing performance/user-experience
by invoking the oom-killer.

Change-Id: I0cf3c50fcd022cd282731bccb54bfbad45878bb1
Signed-off-by: default avatarIsaac J. Manjarres <isaacm@codeaurora.org>
parent 8873011c

mm/oom_kill.c

+7 −5
Original line number Diff line number Diff line
@@ -1090,6 +1090,13 @@ bool out_of_memory(struct oom_control *oc) 


	if (oom_killer_disabled)

		return false;



	if (try_online_one_block(numa_node_id())) {

		/* Got some memory back */

		WARN(1, "OOM killer had to online a memory block\n");

		return true;

	}



#ifdef CONFIG_PRIORITIZE_OOM_TASKS

	oc->min_kill_adj = OOM_SCORE_ADJ_MIN;

#endif
@@ -1157,11 +1164,6 @@ bool out_of_memory(struct oom_control *oc) 
#endif



	if (!oc->chosen) {

		if (try_online_one_block(numa_node_id())) {

			/* Got some memory back */

			WARN(1, "OOM killer had to online a memory block\n");

			return true;

		}

		check_panic_on_oom(oc);

		select_bad_process(oc);

	}