sched/deadline: Fix hrtick for a non-leftmost task
commita7bebf488791aa1036f3e6629daf01d01f705dcb
authorWanpeng Li <wanpeng.li@linux.intel.com>
Wed, 26 Nov 2014 00:44:01 +0000 (26 08:44 +0800)
committerIngo Molnar <mingo@kernel.org>
Wed, 4 Feb 2015 06:52:25 +0000 (4 07:52 +0100)
tree5a85ca285a7e66581e8f97094bafac7cfa5b02cc
parent4c195c8a1967ff8bee13a811518a99db04618ab7
sched/deadline: Fix hrtick for a non-leftmost task

After update_curr_dl() the current task might not be the leftmost task
anymore. In that case do not start a new hrtick for it.

In this case NEED_RESCHED will be set and the next schedule will start
the hrtick for the new task if and when appropriate.

Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Acked-by: Juri Lelli <juri.lelli@arm.com>
[ Rewrote the changelog and comment. ]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Kirill Tkhai <ktkhai@parallels.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1416962647-76792-2-git-send-email-wanpeng.li@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
kernel/sched/deadline.c