linux/tools/perf/util/usage.c, branch v3.0.82Linux kernel source treehttps://git.amat.us/linux/atom/tools/perf/util/usage.c?h=v3.0.822009-06-07T15:31:52Zperf top: Fall back to cpu-clock-tick hrtimer sampling if no cycle counter available2009-06-07T15:31:52ZIngo Molnarmingo@elte.hu2009-06-07T15:31:52Zurn:sha1:716c69fecacd42f2a304a97158e04af2786a3f65
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>
perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/2009-06-06T18:33:43ZIngo Molnarmingo@elte.hu2009-06-06T18:33:43Zurn:sha1:864709302a80f26fa9da3be5b47304f0b8bae192
Several people have suggested that 'perf' has become a full-fledged
tool that should be moved out of Documentation/. Move it to the
(new) tools/ directory.
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>