Ingo Molnar 716c69feca perf top: Fall back to cpu-clock-tick hrtimer sampling if no cycle counter available ... On architectures/CPUs without PMU support but with perfcounters enabled 'perf top' currently fails because it cannot create a cycle based hw-perfcounter. Fall back to the cpu-clock-tick sw-perfcounter in this case, which is hrtimer based and will always work (as long as perfcounters is enabled). Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-06-07 17:31:52 +02:00
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perf	perf top: Fall back to cpu-clock-tick hrtimer sampling if no cycle counter available	2009-06-07 17:31:52 +02:00