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/openbmc/linux/kernel/
H A Dsignal.cdiff 32bd671d6cbeda60dc73be77fa2b9037d9a9bfa0 Thu Feb 05 05:24:15 CST 2009 Peter Zijlstra <a.p.zijlstra@chello.nl> signal: re-add dead task accumulation stats.

We're going to split the process wide cpu accounting into two parts:

- clocks; which can take all the time they want since they run
from user context.

- timers; which need constant time tracing but can affort the overhead
because they're default off -- and rare.

The clock readout will go back to a full sum of the thread group, for this
we need to re-add the exit stats that were removed in the initial itimer
rework (f06febc9: timers: fix itimer/many thread hang).

Furthermore, since that full sum can be rather slow for large thread groups
and we have the complete dead task stats, revert the do_notify_parent time
computation.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
H A Dexit.cdiff 32bd671d6cbeda60dc73be77fa2b9037d9a9bfa0 Thu Feb 05 05:24:15 CST 2009 Peter Zijlstra <a.p.zijlstra@chello.nl> signal: re-add dead task accumulation stats.

We're going to split the process wide cpu accounting into two parts:

- clocks; which can take all the time they want since they run
from user context.

- timers; which need constant time tracing but can affort the overhead
because they're default off -- and rare.

The clock readout will go back to a full sum of the thread group, for this
we need to re-add the exit stats that were removed in the initial itimer
rework (f06febc9: timers: fix itimer/many thread hang).

Furthermore, since that full sum can be rather slow for large thread groups
and we have the complete dead task stats, revert the do_notify_parent time
computation.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
H A Dfork.cdiff 32bd671d6cbeda60dc73be77fa2b9037d9a9bfa0 Thu Feb 05 05:24:15 CST 2009 Peter Zijlstra <a.p.zijlstra@chello.nl> signal: re-add dead task accumulation stats.

We're going to split the process wide cpu accounting into two parts:

- clocks; which can take all the time they want since they run
from user context.

- timers; which need constant time tracing but can affort the overhead
because they're default off -- and rare.

The clock readout will go back to a full sum of the thread group, for this
we need to re-add the exit stats that were removed in the initial itimer
rework (f06febc9: timers: fix itimer/many thread hang).

Furthermore, since that full sum can be rather slow for large thread groups
and we have the complete dead task stats, revert the do_notify_parent time
computation.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
/openbmc/linux/include/linux/
H A Dsched.hdiff 32bd671d6cbeda60dc73be77fa2b9037d9a9bfa0 Thu Feb 05 05:24:15 CST 2009 Peter Zijlstra <a.p.zijlstra@chello.nl> signal: re-add dead task accumulation stats.

We're going to split the process wide cpu accounting into two parts:

- clocks; which can take all the time they want since they run
from user context.

- timers; which need constant time tracing but can affort the overhead
because they're default off -- and rare.

The clock readout will go back to a full sum of the thread group, for this
we need to re-add the exit stats that were removed in the initial itimer
rework (f06febc9: timers: fix itimer/many thread hang).

Furthermore, since that full sum can be rather slow for large thread groups
and we have the complete dead task stats, revert the do_notify_parent time
computation.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>