A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-28 10:41:38 -04:00
Code Issues Projects Releases Packages Wiki Activity

ftrace, sched: Add TRACE_FLAG_PREEMPT_RESCHED

Browse source 
Since the introduction of PREEMPT_NEED_RESCHED in:

  f27dde8dee ("sched: Add NEED_RESCHED to the preempt_count")

we need to be able to look at both TIF_NEED_RESCHED and
PREEMPT_NEED_RESCHED to understand the full preemption behaviour.

Add it to the trace output.

Signed-off-by: Peter Zijlstra <[email protected]>
Acked-by: Steven Rostedt <[email protected]>
Cc: Fengguang Wu <[email protected]>
Cc: Huang Ying <[email protected]>
Cc: Yuanhan Liu <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Peter Zijlstra 2013-10-04 17:28:26 +02:00 • committed by Ingo Molnar
commit e5137b50a0
4 changed files with 25 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

6
Documentation/trace/ftrace.txt
View file

@ -655,7 +655,11 @@ explains which is which.
read the irq flags variable, an 'X' will always
be printed here.
need-resched: 'N' task need_resched is set, '.' otherwise.
need-resched:
'N' both TIF_NEED_RESCHED and PREEMPT_NEED_RESCHED is set,
'n' only TIF_NEED_RESCHED is set,
'p' only PREEMPT_NEED_RESCHED is set,
'.' otherwise.
hardirq/softirq:
'H' - hard irq occurred inside a softirq.