chrt: add note about zero priority for IDLE and BATCH

Reported-by: dE <de.techno@gmail.com>
Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/schedutils/chrt.1 b/schedutils/chrt.1
index bc65a308948cfb50a2d73bb37bec3fa712c1114f..c7da4ebe7df8e00fc4ab853b0f6ba3680c149256 100644 (file)
--- a/schedutils/chrt.1
+++ b/schedutils/chrt.1
@@ -64,7 +64,7 @@ given PID.
 .BR -b ,\  --batch
 Set scheduling policy to
 .B SCHED_BATCH
-(Linux-specific).
+(Linux-specific). The priority argument has to be set to zero.
 .TP
 .BR -f ,\  --fifo
 Set scheduling policy to
@@ -73,7 +73,7 @@ Set scheduling policy to
 .BR -i ,\  --idle
 Set scheduling policy to
 .B SCHED_IDLE
-(Linux-specific).
+(Linux-specific). The priority argument has to be set to zero.
 .TP
 .BR -m ,\  --max
 Show minimum and maximum valid priorities, then exit.