path: root/Documentation/scheduler
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authorRakib Mullick <rakib.mullick@gmail.com>2012-01-24 16:33:56 (GMT)
committerIngo Molnar <mingo@elte.hu>2012-01-27 12:28:53 (GMT)
commit30fd049afcfed50e022704036e8629d6bdfe84e6 (patch)
tree829472524c157f1d7a769d088b2f9b70c9779c11 /Documentation/scheduler
parent4ec4412e1e91f44a3dcb97b6c9172a13fc78bac9 (diff)
sched: Remove sched_switch
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 <rakib.mullick@gmail.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1327422836.27181.5.camel@localhost.localdomain Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/scheduler')
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/scheduler/sched-stats.txt b/Documentation/scheduler/sched-stats.txt
index 1cd5d51..8259b34 100644
--- a/Documentation/scheduler/sched-stats.txt
+++ b/Documentation/scheduler/sched-stats.txt
@@ -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

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