sched: Fix signedness bug in yield_to()
In 7b270f60 "sched: Bail out of yield_to when source and target runqueue has one task" we changed this to store -ESRCH so it needs to be signed. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: kbuild@01.org Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Mike Galbraith <efault@gmx.de> Link: http://lkml.kernel.org/r/20130205113751.GA20521@elgon.mountainSigned-off-by: Ingo Molnar <mingo@kernel.org>
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