From: Randy Dunlap <rdunlap@infradead.org>
To: linux-kernel@vger.kernel.org
Cc: Randy Dunlap <rdunlap@infradead.org>,
Kan Liang <kan.liang@linux.intel.com>,
Ian Rogers <irogers@google.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
linux-perf-users@vger.kernel.org
Subject: [PATCH] perf Documentation: clarify sysfs event names characters
Date: Mon, 13 May 2024 12:24:39 -0700 [thread overview]
Message-ID: <20240513192439.18473-1-rdunlap@infradead.org> (raw)
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: 785623ee855e ("perf Document: Sysfs event names must be lower or upper case")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: linux-perf-users@vger.kernel.org
---
Documentation/ABI/testing/sysfs-bus-event_source-devices-events | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff -- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-events b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events
--- 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 monitor
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:
next reply other threads:[~2024-05-13 19:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-13 19:24 Randy Dunlap [this message]
2024-05-14 0:44 ` [PATCH] perf Documentation: clarify sysfs event names characters Ian Rogers
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