linux-kernel - [PATCH v3 0/3] perf probe: Improve logs for long name string

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Message-Id: <20241012204725.928794-1-leo.yan@arm.com>
Date: Sat, 12 Oct 2024 21:47:22 +0100
From: Leo Yan <leo.yan@....com>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Ian Rogers <irogers@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	"Liang, Kan" <kan.liang@...ux.intel.com>,
	linux-perf-users@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Leo Yan <leo.yan@....com>
Subject: [PATCH v3 0/3] perf probe: Improve logs for long name string

The series [1] tries to use hashed symbol names for event names. This
can avoid failures due to long symbol names. Somehow, it is preferred to
specify a distinct event name when adding a probe.

This series follows up on the comment to improve the logs for long event
strings.

[1] https://lore.kernel.org/linux-perf-users/20241010234818.ab279974ef597f02b61ab850@kernel.org/T/

Changes from v2:
- Printed a more abstract syntax "EVENT=PROBEDEF" in log.
- Amended warning for adding suffix failure.

Changes from v1:
- Used a patch to add MAX_EVENT_NAME_LEN macro.
- Refined log for long event name failure to replace hashed event name
  (Masami).


Leo Yan (3):
  perf probe: Use the MAX_EVENT_NAME_LEN macro
  perf probe: Check group string length
  perf probe: Improve log for long event name failure

 tools/perf/util/probe-event.c | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

-- 
2.25.1