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| author |  Daniel Bristot de Oliveira <bristot@kernel.org>
| 2024-04-24 16:36:50 +0200 |
|---|---|---|
| committer | Daniel Bristot de Oliveira <bristot@kernel.org>
| 2024-05-15 15:13:56 +0200 |
| commit | 5f0769331a965675cdfec97c09f3f6e875d7c246 (patch) | |
| tree | 3cabb0eebdb79ec4c169e6df93f29266903a1063 /tools/tracing | |
| parent | Linux 6.9 (diff) | |
| download | linux-5f0769331a965675cdfec97c09f3f6e875d7c246.tar.gz linux-5f0769331a965675cdfec97c09f3f6e875d7c246.tar.bz2 linux-5f0769331a965675cdfec97c09f3f6e875d7c246.zip | |
rtla/timerlat: Simplify "no value" printing on top
Instead of printing three times the same output, print it only once,
reducing lines and being sure that all no values have the same length.
It also fixes an extra '\n' when running the with kernel threads, like
here:
=============== %< ==============
Timer Latency
0 00:00:01 | IRQ Timer Latency (us) | Thread Timer Latency (us)
CPU COUNT | cur min avg max | cur min avg max
2 #0 | - - - - | 161 161 161 161
3 #0 | - - - - | 161 161 161 161
8 #1 | 54 54 54 54 | - - - -'\n'
---------------|----------------------------------------|---------------------------------------
ALL #1 e0 | 54 54 54 | 161 161 161
=============== %< ==============
This '\n' should have been removed with the user-space support that
added another '\n' if not running with kernel threads.
Link: https://lkml.kernel.org/r/0a4d8085e7cd706733a5dc10a81ca38b82bd4992.1713968967.git.bristot@kernel.org
Cc: stable@vger.kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Juri Lelli <juri.lelli@redhat.com>
Fixes: cdca4f4e5e8e ("rtla/timerlat_top: Add timerlat user-space support")
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Diffstat (limited to 'tools/tracing')
| -rw-r--r-- | tools/tracing/rtla/src/timerlat_top.c | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/tools/tracing/rtla/src/timerlat_top.c b/tools/tracing/rtla/src/timerlat_top.c index 8a3fa64319c6..2665e0bb5f1e 100644 --- a/tools/tracing/rtla/src/timerlat_top.c +++ b/tools/tracing/rtla/src/timerlat_top.c @@ -212,6 +212,8 @@ static void timerlat_top_header(struct osnoise_tool *top) trace_seq_printf(s, "\n"); } +static const char *no_value = " -"; + /* * timerlat_top_print - prints the output of a given CPU */ @@ -239,10 +241,7 @@ static void timerlat_top_print(struct osnoise_tool *top, int cpu) trace_seq_printf(s, "%3d #%-9d |", cpu, cpu_data->irq_count); if (!cpu_data->irq_count) { - trace_seq_printf(s, " - "); - trace_seq_printf(s, " - "); - trace_seq_printf(s, " - "); - trace_seq_printf(s, " - |"); + trace_seq_printf(s, "%s %s %s %s |", no_value, no_value, no_value, no_value); } else { trace_seq_printf(s, "%9llu ", cpu_data->cur_irq / params->output_divisor); trace_seq_printf(s, "%9llu ", cpu_data->min_irq / params->output_divisor); @@ -251,10 +250,7 @@ static void timerlat_top_print(struct osnoise_tool *top, int cpu) } if (!cpu_data->thread_count) { - trace_seq_printf(s, " - "); - trace_seq_printf(s, " - "); - trace_seq_printf(s, " - "); - trace_seq_printf(s, " -\n"); + trace_seq_printf(s, "%s %s %s %s", no_value, no_value, no_value, no_value); } else { trace_seq_printf(s, "%9llu ", cpu_data->cur_thread / divisor); trace_seq_printf(s, "%9llu ", cpu_data->min_thread / divisor); @@ -271,10 +267,7 @@ static void timerlat_top_print(struct osnoise_tool *top, int cpu) trace_seq_printf(s, " |"); if (!cpu_data->user_count) { - trace_seq_printf(s, " - "); - trace_seq_printf(s, " - "); - trace_seq_printf(s, " - "); - trace_seq_printf(s, " -\n"); + trace_seq_printf(s, "%s %s %s %s\n", no_value, no_value, no_value, no_value); } else { trace_seq_printf(s, "%9llu ", cpu_data->cur_user / divisor); trace_seq_printf(s, "%9llu ", cpu_data->min_user / divisor); |