X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=Documentation%2Fsysctl%2Fkernel.txt;h=af70d1541d3af5b18834bce320ddd3e37009d29b;hb=3370b69eb0c1f6a05f9051e8fc3e8768461a80f7;hp=6fccb69c03e747c2eb713a1256676c8fa44f2349;hpb=8c4de9bc2041229fb778e0c47e32585b6f6b1d09;p=firefly-linux-kernel-4.4.55.git

diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
index 6fccb69c03e7..af70d1541d3a 100644
--- a/Documentation/sysctl/kernel.txt
+++ b/Documentation/sysctl/kernel.txt
@@ -33,6 +33,7 @@ show up in /proc/sys/kernel:
 - domainname
 - hostname
 - hotplug
+- hardlockup_all_cpu_backtrace
 - hung_task_panic
 - hung_task_check_count
 - hung_task_timeout_secs
@@ -292,6 +293,17 @@ Information Service) or YP (Yellow Pages) domainname. These two
 domain names are in general different. For a detailed discussion
 see the hostname(1) man page.
 
+==============================================================
+hardlockup_all_cpu_backtrace:
+
+This value controls the hard lockup detector behavior when a hard
+lockup condition is detected as to whether or not to gather further
+debug information. If enabled, arch-specific all-CPU stack dumping
+will be initiated.
+
+0: do nothing. This is the default behavior.
+
+1: on detection capture more debug information.
 ==============================================================
 
 hotplug: