svn commit: r362141 - head/sys/kern

[Conrad Meyer]

Author: cem
Date: Sat Jun 13 03:04:40 2020
New Revision: 362141
URL: https://svnweb.freebsd.org/changeset/base/362141

Log:
  Flip kern.tty_info_kstacks on by default
  
  It's a useful debug aid for anyone using Ctrl-T today, and doesn't seem to be
  widely known.  So, enable it out of the box to help people find it.
  
  It's a tunable and sysctl, so if you don't like it, it's easy to disable
  locally.
  
  If people really hate it, we can always flip it back.
  
  Reported by:	Daniel O'Connor

Modified:
  head/sys/kern/tty_info.c

Modified: head/sys/kern/tty_info.c
==============================================================================
--- head/sys/kern/tty_info.c	Sat Jun 13 02:24:35 2020	(r362140)
+++ head/sys/kern/tty_info.c	Sat Jun 13 03:04:40 2020	(r362141)
@@ -239,7 +239,7 @@ sbuf_tty_drain(void *a, const char *d, int len)
 }
 
 #ifdef STACK
-static bool tty_info_kstacks = false;
+static bool tty_info_kstacks = true;
 SYSCTL_BOOL(_kern, OID_AUTO, tty_info_kstacks, CTLFLAG_RWTUN,
     &tty_info_kstacks, 0,
     "Enable printing kernel stack(9) traces on ^T (tty info)");