This is a note to let you know that I've just added the patch titled
rtla/timerlat: Fix "Previous IRQ" auto analysis' line
to the 6.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rtla-timerlat-fix-previous-irq-auto-analysis-line.patch
and it can be found in the queue-6.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 3da4417abea2857bced53e77d041c9b3ca2ba3aa
Author: Daniel Bristot de Oliveira <bristot@xxxxxxxxxx>
Date: Fri Mar 24 20:26:42 2023 +0100
rtla/timerlat: Fix "Previous IRQ" auto analysis' line
[ 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@xxxxxxxxxx
Fixes: 27e348b221f6 ("rtla/timerlat: Add auto-analysis core")
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Signed-off-by: Daniel Bristot de Oliveira <bristot@xxxxxxxxxx>
Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/tracing/rtla/src/timerlat_aa.c b/tools/tracing/rtla/src/timerlat_aa.c
index ec4e0f4b0e6cd..1843fff66da5b 100644
--- a/tools/tracing/rtla/src/timerlat_aa.c
+++ b/tools/tracing/rtla/src/timerlat_aa.c
@@ -548,7 +548,7 @@ static void timerlat_thread_analysis(struct timerlat_aa_data *taa_data, int cpu,
exp_irq_ts = taa_data->timer_irq_start_time - taa_data->timer_irq_start_delay;
if (exp_irq_ts < taa_data->prev_irq_timstamp + taa_data->prev_irq_duration)
- printf(" Previous IRQ interference: \t up to %9.2f us",
+ printf(" Previous IRQ interference: \t\t up to %9.2f us\n",
ns_to_usf(taa_data->prev_irq_duration));
/*
