Documentation: add ARM user_debug to kernel-parameters.txt

Usually kernel parameters are documented in kernel-parameters.txt
but user_debug is only documented in the Kconfig. Document the
option and point to the Kconfig help text for more info.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 78926aa2531c..246b132dcc90 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2635,6 +2635,16 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                                         medium is write-protected).
                         Example: quirks=0419:aaf5:rl,0421:0433:rc
 
+        user_debug=     [KNL,ARM]
+                        Format: <int>
+                        See arch/arm/Kconfig.debug help text.
+                                 1 - undefined instruction events
+                                 2 - system calls
+                                 4 - invalid data aborts
+                                 8 - SIGSEGV faults
+                                16 - SIGBUS faults
+                        Example: user_debug=31
+
         userpte=
                         [X86] Flags controlling user PTE allocations.