1 files changed, 18 insertions, 4 deletions

diff --git a/kernel/drivers/tty/sysrq.c b/kernel/drivers/tty/sysrq.c
index 9ffdfcf2e..5381a728d 100644
--- a/kernel/drivers/tty/sysrq.c
+++ b/kernel/drivers/tty/sysrq.c
@@ -353,9 +353,18 @@ static struct sysrq_key_op sysrq_term_op = {
 
 static void moom_callback(struct work_struct *ignored)
 {
-	if (!out_of_memory(node_zonelist(first_memory_node, GFP_KERNEL),
-			   GFP_KERNEL, 0, NULL, true))
+	const gfp_t gfp_mask = GFP_KERNEL;
+	struct oom_control oc = {
+		.zonelist = node_zonelist(first_memory_node, gfp_mask),
+		.nodemask = NULL,
+		.gfp_mask = gfp_mask,
+		.order = -1,
+	};
+
+	mutex_lock(&oom_lock);
+	if (!out_of_memory(&oc))
 		pr_info("OOM request ignored because killer is disabled\n");
+	mutex_unlock(&oom_lock);
 }
 
 static DECLARE_WORK(moom_work, moom_callback);
@@ -460,6 +469,7 @@ static struct sysrq_key_op *sysrq_key_table[36] = {
 	/* v: May be registered for frame buffer console restore */
 	NULL,				/* v */
 	&sysrq_showstate_blocked_op,	/* w */
+	/* x: May be registered on mips for TLB dump */
 	/* x: May be registered on ppc/powerpc for xmon */
 	/* x: May be registered on sparc64 for global PMU dump */
 	NULL,				/* x */
@@ -985,7 +995,7 @@ static int sysrq_reset_seq_param_set(const char *buffer,
 	return 0;
 }
 
-static struct kernel_param_ops param_ops_sysrq_reset_seq = {
+static const struct kernel_param_ops param_ops_sysrq_reset_seq = {
 	.get	= param_get_ushort,
 	.set	= sysrq_reset_seq_param_set,
 };
@@ -993,6 +1003,10 @@ static struct kernel_param_ops param_ops_sysrq_reset_seq = {
 #define param_check_sysrq_reset_seq(name, p)	\
 	__param_check(name, p, unsigned short)
 
+/*
+ * not really modular, but the easiest way to keep compat with existing
+ * bootargs behaviour is to continue using module_param here.
+ */
 module_param_array_named(reset_seq, sysrq_reset_seq, sysrq_reset_seq,
 			 &sysrq_reset_seq_len, 0644);
 
@@ -1109,4 +1123,4 @@ static int __init sysrq_init(void)
 
 	return 0;
 }
-module_init(sysrq_init);
+device_initcall(sysrq_init);