Add a new option to toggle the display of the system idle process (per-CPU

idle threads).  The process is displayed by default (subject to whether or
not system processes are displayed) to preserve existing behavior.  The
system idle process can be hidden via the '-z' command line argument or the
'z' key while top is running.  When it is hidden, top more closely matches
the behavior of FreeBSD <= 4.x where idle time was not accounted to any
process.

MFC after:	2 weeks

1 files changed, 1 insertions, 0 deletions

diff --git a/contrib/top/commands.c b/contrib/top/commands.c
index 47f4a2ea05fb..7891068a2517 100644
--- a/contrib/top/commands.c
+++ b/contrib/top/commands.c
@@ -94,6 +94,7 @@ S       - toggle the displaying of system processes\n\
 a       - toggle the displaying of process titles\n\
 t       - toggle the display of this process\n\
 u       - display processes for only one user (+ selects all users)\n\
+z       - toggle the displaying of the system idle process\n\
 \n\
 \n", stdout);
     }