Oleg Nesterov 8f9fbf092c sched: Fix the PREEMPT_ACTIVE check in __trace_sched_switch_state() ...

task_preempt_count() has nothing to do with the actual preempt counter,
thread_info->saved_preempt_count is only valid right after switch_to().

__trace_sched_switch_state() can use preempt_count(), prev is still the
current task when trace_sched_switch() is called.

Signed-off-by: Oleg Nesterov <[email protected]>
[ Added BUG_ON(). ]
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Steven Rostedt <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

2014-10-28 10:47:53 +01:00

..

events

sched: Fix the PREEMPT_ACTIVE check in __trace_sched_switch_state()

2014-10-28 10:47:53 +01:00

define_trace.h

…

ftrace.h

tracing: Add __field_struct macro for TRACE_EVENT()

2014-06-21 00:18:42 -04:00

syscall.h

tracing: Fix syscall_*regfunc() vs copy_process() race

2014-06-21 00:15:12 -04:00