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sched: Remove sched_switch

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Currently we don't utilize the sched_switch field anymore.

But, simply removing sched_switch field from the middle of the
sched_stat output will break tools.

So, to stay compatible we hardcode it to zero and remove the
field from the scheduler data structures.

Update the schedstat documentation accordingly.

Signed-off-by: Rakib Mullick <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Rakib Mullick 2012-01-24 22:33:56 +06:00 • committed by Ingo Molnar
commit 30fd049afc
4 changed files with 4 additions and 5 deletions
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3
Documentation/scheduler/sched-stats.txt
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@ -38,7 +38,8 @@ First field is a sched_yield() statistic:
1) # of times sched_yield() was called
Next three are schedule() statistics:
2) # of times we switched to the expired queue and reused it
2) This field is a legacy array expiration count field used in the O(1)
scheduler. We kept it for ABI compatibility, but it is always set to zero.
3) # of times schedule() was called
4) # of times schedule() left the processor idle