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Diffstat (limited to 'mm/memory-failure.c')
-rw-r--r--mm/memory-failure.c36
1 files changed, 34 insertions, 2 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index fae9baf3be16..10e60b6b2447 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -62,13 +62,14 @@
#include <linux/page-isolation.h>
#include <linux/pagewalk.h>
#include <linux/shmem_fs.h>
+#include <linux/sysctl.h>
#include "swap.h"
#include "internal.h"
#include "ras/ras_event.h"
-int sysctl_memory_failure_early_kill __read_mostly = 0;
+static int sysctl_memory_failure_early_kill __read_mostly;
-int sysctl_memory_failure_recovery __read_mostly = 1;
+static int sysctl_memory_failure_recovery __read_mostly = 1;
atomic_long_t num_poisoned_pages __read_mostly = ATOMIC_LONG_INIT(0);
@@ -122,6 +123,37 @@ const struct attribute_group memory_failure_attr_group = {
.attrs = memory_failure_attr,
};
+#ifdef CONFIG_SYSCTL
+static struct ctl_table memory_failure_table[] = {
+ {
+ .procname = "memory_failure_early_kill",
+ .data = &sysctl_memory_failure_early_kill,
+ .maxlen = sizeof(sysctl_memory_failure_early_kill),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ {
+ .procname = "memory_failure_recovery",
+ .data = &sysctl_memory_failure_recovery,
+ .maxlen = sizeof(sysctl_memory_failure_recovery),
+ .mode = 0644,
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = SYSCTL_ZERO,
+ .extra2 = SYSCTL_ONE,
+ },
+ { }
+};
+
+static int __init memory_failure_sysctl_init(void)
+{
+ register_sysctl_init("vm", memory_failure_table);
+ return 0;
+}
+late_initcall(memory_failure_sysctl_init);
+#endif /* CONFIG_SYSCTL */
+
/*
* Return values:
* 1: the page is dissolved (if needed) and taken off from buddy,