kernel/watchdog.c: add sysctl knob hardlockup_panic

[firefly-linux-kernel-4.4.55.git] / kernel / sysctl.c

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 1a5faa3e15218ddc1e6684c101eb1370546f6e13..dc6858d6639ed022d65129bdbb869ff7bcc05789 100644 (file)
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -888,6 +888,17 @@ static struct ctl_table kern_table[] = {
                .extra1         = &zero,
                .extra2         = &one,
        },
+#ifdef CONFIG_HARDLOCKUP_DETECTOR
+       {
+               .procname       = "hardlockup_panic",
+               .data           = &hardlockup_panic,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec_minmax,
+               .extra1         = &zero,
+               .extra2         = &one,
+       },
+#endif
 #ifdef CONFIG_SMP
        {
                .procname       = "softlockup_all_cpu_backtrace",