diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-06-07 17:31:52 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-07 17:31:52 +0200 |
| commit | 716c69fecacd42f2a304a97158e04af2786a3f65 (patch) | |
| tree | 5f86a0ce67ba87595d14a6fd6d5f59f8f7cf1f56 /lib/rwsem.c | |
| parent | 743ee1f80434138495bbb95ffb897acf46b51d54 (diff) | |
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>
Diffstat (limited to 'lib/rwsem.c')
0 files changed, 0 insertions, 0 deletions