diff options
| author | Randy Dunlap <rdunlap@infradead.org> | 2024-05-13 12:24:39 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2025-01-08 17:20:42 -0300 |
| commit | b031fe8351cd5b2c7c7d3c85c036910b9e5817a2 (patch) | |
| tree | 3d2504f70a6a06b77f799f759504c0f36aaffc9c | |
| parent | d52af4b8c6645d362ebaad5693c319e7c03e4bea (diff) | |
perf Documentation: Clarify sysfs event names characters
Specify that perf event names in sysfs must not contain mixed lower and
upper case characters and that they may contain numbers, ".", "_",
or "-" as well.
Fixes: 785623ee855e893d ("perf Document: Sysfs event names must be lower or upper case")
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Link: https://lore.kernel.org/r/20240513192439.18473-1-rdunlap@infradead.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-event_source-devices-events | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-events b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events index e7efeab2ee83..0fe1b9487202 100644 --- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-events +++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events @@ -37,11 +37,13 @@ Description: Per-pmu performance monitoring events specific to the running syste performance monitoring event supported by the <pmu>. The name of the file is the name of the event. - As performance monitoring event names are case - insensitive in the perf tool, the perf tool only looks - for lower or upper case event names in sysfs to avoid + As performance monitoring event names are case insensitive + in the perf tool, the perf tool only looks for all lower + case or all upper case event names in sysfs to avoid scanning the directory. It is therefore required the - name of the event here is either lower or upper case. + name of the event here is either completely lower or upper + case, with no mixed-case characters. Numbers, '.', '_', and + '-' are also allowed. File contents: |