tree ac923b89c28d735d2460216202d960e9c6237be0
parent 789f90fcf6b0b54e655740e9396c954378542c79
author Peter Zijlstra <a.p.zijlstra@chello.nl> 1242393568 +0200
committer Ingo Molnar <mingo@elte.hu> 1242394016 +0200

perf_counter: frequency based adaptive irq_period

Instead of specifying the irq_period for a counter, provide a target interrupt
frequency and dynamically adapt the irq_period to match this frequency.

[ Impact: new perf-counter attribute/feature ]

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <20090515132018.646195868@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>