linux-kernel - [PATCH 0/3] rtla/timerlat: Set OSNOISE

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Message-ID: <20250107144823.239782-1-tglozar@redhat.com>
Date: Tue,  7 Jan 2025 15:48:20 +0100
From: Tomas Glozar <tglozar@...hat.com>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: linux-trace-kernel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	John Kacur <jkacur@...hat.com>,
	Luis Goncalves <lgoncalv@...hat.com>,
	Tomas Glozar <tglozar@...hat.com>
Subject: [PATCH 0/3] rtla/timerlat: Set OSNOISE_WORKLOAD for kernel threads

The patchset makes both rtla-timerlat-hist and rtla-timerlat-top set
OSNOISE_WORKLOAD to the proper value ("on" when running with -k, "off"
when running with -u) every time the option is available instead of setting it
only when running with -u.

This prevents rtla timerlat -k from giving no results when
NO_OSNOISE_WORKLOAD is set, either manually or by an abnormally exited earlier
run of rtla timerlat -u.

osnoise_set_workload is made to distinguish between the option missing
altogether and it failing to be set. In the first case, rtla-timerlat will
ignore setting the option to preserve compatibility of kernel-thread mode
on older kernels without the OSNOISE_WORKLOAD option.

Tomas Glozar (3):
  rtla/osnoise: Distinguish missing workload option
  rtla/timerlat_hist: Set OSNOISE_WORKLOAD for kernel threads
  rtla/timerlat_top: Set OSNOISE_WORKLOAD for kernel threads

 tools/tracing/rtla/src/osnoise.c       |  2 +-
 tools/tracing/rtla/src/timerlat_hist.c | 15 +++++++++------
 tools/tracing/rtla/src/timerlat_top.c  | 15 +++++++++------
 3 files changed, 19 insertions(+), 13 deletions(-)

-- 
2.47.1