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| author | Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | 2013-12-12 16:47:00 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-12-16 14:37:52 +0100 |
| commit | 55baa2f831ae4a41da9617ab9e7cef5ebc991ec9 (patch) | |
| tree | 700ba9a81a60e1c4eaff56f57d38fd818f6de6a8 /arch/s390/oprofile | |
| parent | 8c069ff4bd6063a3f15e606c882e03f75c7e7711 (diff) | |
| download | linux-55baa2f831ae4a41da9617ab9e7cef5ebc991ec9.tar.bz2 | |
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>
Diffstat (limited to 'arch/s390/oprofile')
0 files changed, 0 insertions, 0 deletions