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| author | Kim Phillips <kim.phillips@arm.com> | 2017-11-14 22:04:52 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-11-16 18:50:03 +0100 |
| commit | 114bc191c37028d87a540251d93e7b328f4de3fe (patch) | |
| tree | 09316672b9316aca051cfc3ba1fd3b606210242c /tools/perf/Documentation/perf-lock.txt | |
| parent | perf c2c: Fix spelling mistakes in browser help text (diff) | |
| download | linux-114bc191c37028d87a540251d93e7b328f4de3fe.tar.xz linux-114bc191c37028d87a540251d93e7b328f4de3fe.zip | |
perf evsel: Say which PMU Hardware event doesn't support sampling/overflow-interrupts
Help identify to the user the event with the unsupported sampling error.
Also suggest a corrective action.
BEFORE:
$ sudo ./oldperf record -e armv8_pmuv3/mem_access/,ccn/cycles/,armv8_pmuv3/l2d_cache/ true
Error:
PMU Hardware doesn't support sampling/overflow-interrupts.
AFTER:
$ sudo ./newperf record -e armv8_pmuv3/mem_access/,ccn/cycles/,armv8_pmuv3/l2d_cache/ true
Error:
ccn/cycles/: PMU Hardware doesn't support sampling/overflow-interrupts. Try 'perf stat'
Signed-off-by: Kim Phillips <kim.phillips@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20171114150452.e846f2e23684c7d7d8ee706f@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-lock.txt')
0 files changed, 0 insertions, 0 deletions