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| author | Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | 2015-09-07 11:52:42 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-09-17 14:43:42 +0300 |
| commit | 58f8e9da33eb0104f5bee3e8b3ca44e1583c78b9 (patch) | |
| tree | d889d71b48c2f548740cdefa0a37c9410a14f915 /lib/test_rhashtable.c | |
| parent | 8d4bd0ed0439dfc780aab801a085961925ed6838 (diff) | |
| download | linux-58f8e9da33eb0104f5bee3e8b3ca44e1583c78b9.tar.xz | |
s390/cpum_cf: Corrected return code for unauthorized counter sets
Previously, the cpum_cf PMU returned -EPERM if a counter is requested and
the counter set to which the counter belongs is not authorized. According
to the perf_event_open() system call manual, an error code of EPERM indicates
an unsupported exclude setting or CAP_SYS_ADMIN is missing.
Use ENOENT to indicate that particular counters are not available when the
counter set which contains the counter is not authorized. For generic events,
this might trigger a fall back, for example, to a software event.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'lib/test_rhashtable.c')
0 files changed, 0 insertions, 0 deletions