• Ingo Molnar's avatar
    perf record: Fall back to cpu-clock-ticks if no PMU · 3da297a6
    Ingo Molnar authored
    On architectures/CPUs without PMU support but with perfcounters
    enabled 'perf record' 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
    are 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: default avatarIngo Molnar <mingo@elte.hu>
    3da297a6
builtin-record.c 12.3 KB