| commit | 55baa2f831ae4a41da9617ab9e7cef5ebc991ec9 | [log] [tgz] |
|---|---|---|
| author | Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | Thu Dec 12 16:47:00 2013 +0100 |
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | Mon Dec 16 14:37:52 2013 +0100 |
| tree | 700ba9a81a60e1c4eaff56f57d38fd818f6de6a8 | |
| parent | 8c069ff4bd6063a3f15e606c882e03f75c7e7711 [diff] |
s390/perf: Improve PMU selection for PERF_COUNT_HW_CPU_CYCLES events The cpum_cf (counter facility) PMU does not support sampling events. With cpum_sf (sampling facility), a PMU for sampling CPU cycles is available. Make cpum_sf the "default" PMU for PERF_COUNT_HW_CPU_CYCLES sampling events but use the more precise cpum_cf PMU for non-sampling events. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>