Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v6.3.6 2023-05-11T14:17:29+00:00 2023-05-11T14:17:29+00:00 Daniel Bristot de Oliveira bristot@kernel.org 2023-03-24T19:26:42+00:00 urn:sha1:a6a8b111f31dc53991882d60f8f5497e07220c89 [ Upstream commit 82253a271aae9271fcf0aaa5e0ecc6dd38fb872b ] The "Previous IRQ interference" line is misaligned and without a \n, breaking the tool's output: ## CPU 12 hit stop tracing, analyzing it ## Previous IRQ interference: up to 2.22 us IRQ handler delay: 18.06 us (0.00 %) IRQ latency: 18.52 us Timerlat IRQ duration: 4.41 us (0.00 %) Blocking thread: 216.93 us (0.03 %) Fix the output: ## CPU 7 hit stop tracing, analyzing it ## Previous IRQ interference: up to 8.93 us IRQ handler delay: 0.98 us (0.00 %) IRQ latency: 2.95 us Timerlat IRQ duration: 11.26 us (0.03 %) Link: https://lore.kernel.org/linux-trace-devel/8b5819077f15ccf24745c9bf3205451e16ee32d9.1679685525.git.bristot@kernel.org Fixes: 27e348b221f6 ("rtla/timerlat: Add auto-analysis core") Cc: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 2023-02-02T15:48:03+00:00 Daniel Bristot de Oliveira bristot@kernel.org 2023-01-31T15:38:53+00:00 urn:sha1:27e348b221f6a78cbe86e7def8e2611f84509211 Currently, timerlat displays a summary of the timerlat tracer results saving the trace if the system hits a stop condition. While this represented a huge step forward, the root cause was not that is accessible to non-expert users. The auto-analysis fulfill this gap by parsing the trace timerlat runs, printing an intuitive auto-analysis. Link: https://lkml.kernel.org/r/1ee073822f6a2cbb33da0c817331d0d4045e837f.1675179318.git.bristot@kernel.org Cc: Daniel Bristot de Oliveira <bristot@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>