linux-kernel - [PATCH 0/3] rtla: fix cgroup and trace options parsing

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Message-ID: <cover.1755014784.git.ipravdin.official@gmail.com>
Date: Tue, 12 Aug 2025 12:27:29 -0400
From: Ivan Pravdin <ipravdin.official@...il.com>
To: rostedt@...dmis.org,
	corbet@....net,
	tglozar@...hat.com,
	linux-trace-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Ivan Pravdin <ipravdin.official@...il.com>
Subject: [PATCH 0/3] rtla: fix cgroup and trace options parsing

This series fixes 3 issue in rtla timerlat and osnoise parsing.

1. Fix buffer overflow when using --on-threshold option. Currently
   passing `--on-threshold trace` causes rtla timerlat to segfault.
   First patch addresses this issue.

2. Make -C/--cgroup option more user-friendly. Currently rtla timerlat
   and osnoise parses does not allow to specify tracer's threads cgroup
   name as `-C [cgroup]` or `--cgroup [cgroup]`. Second patch fixes this by
   allowing users to specify cgroup in the aforementioned manner.

3. When specifying `-t/--trace` before `-a/--auto`, trace filename is
   override to default <osnoise|timerlat>_trace.txt. For example, when
   running rtla as 

       `rtla timerlat top -t custom_file.txt -a 100`

   when the threshold is reached, timerlat_trace.txt file is created
   instead of specified custom_file.txt. Third patch addresses this issue.

Ivan Pravdin (3):
  rtla: fix buffer overflow in actions_parse
  rtla: fix -C/--cgroup interface
  rtla: fix -a overriding -t argument

 Documentation/tools/rtla/common_options.rst |  2 +-
 tools/tracing/rtla/src/actions.c            |  2 +-
 tools/tracing/rtla/src/osnoise_hist.c       | 24 ++++++++------
 tools/tracing/rtla/src/osnoise_top.c        | 24 ++++++++------
 tools/tracing/rtla/src/timerlat_hist.c      | 24 ++++++++------
 tools/tracing/rtla/src/timerlat_top.c       | 36 +++++++++------------
 6 files changed, 62 insertions(+), 50 deletions(-)

-- 
2.48.1