From f04d82b7e0c63d0251f9952a537a4bc4d73aa1a9 Mon Sep 17 00:00:00 2001 From: GeunSik Lim Date: Thu, 28 May 2009 10:36:14 +0900 Subject: [PATCH] sched: fix typo in sched-rt-group.txt file Fix typo about static priority's range. Kernel Space User Space =============================================================== 0(high) to 98(low) user RT priority 99(high) to 1(low) with SCHED_RR or SCHED_FIFO --------------------------------------------------------------- 99 sched_priority is not used in scheduling decisions(it must be specified as 0) --------------------------------------------------------------- 100(high) to 139(low) user nice -20(high) to 19(low) --------------------------------------------------------------- 140 idle task priority --------------------------------------------------------------- * ref) http://www.kernel.org/doc/man-pages/online/pages/man2/sched_setscheduler.2.html Signed-off-by: GeunSik Lim CC: Steven Rostedt Signed-off-by: Peter Zijlstra LKML-Reference: Signed-off-by: Ingo Molnar --- Documentation/scheduler/sched-rt-group.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/scheduler/sched-rt-group.txt b/Documentation/scheduler/sched-rt-group.txt index eb74b014a3f8..1df7f9cdab05 100644 --- a/Documentation/scheduler/sched-rt-group.txt +++ b/Documentation/scheduler/sched-rt-group.txt @@ -187,7 +187,7 @@ get their allocated time. Implementing SCHED_EDF might take a while to complete. Priority Inheritance is the biggest challenge as the current linux PI infrastructure is geared towards -the limited static priority levels 0-139. With deadline scheduling you need to +the limited static priority levels 0-99. With deadline scheduling you need to do deadline inheritance (since priority is inversely proportional to the deadline delta (deadline - now).