Re: [PATCH 1/1 perf-tools-next] perf ftrace latency: Fix unit on histogram first entry when using --use-nsec

[Namhyung Kim]

On Tue, 29 Oct 2024 16:29:02 -0300, Arnaldo Carvalho de Melo wrote:

> The use_nsec arg wasn't being taken into account when printing the first
> histogram entry, fix it:
> 
>   root@number:~# perf ftrace latency --use-nsec -T switch_mm_irqs_off -a sleep 2
>   #   DURATION     |      COUNT | GRAPH                                          |
>        0 - 1    us |          0 |                                                |
>        1 - 2    ns |          0 |                                                |
>        2 - 4    ns |          0 |                                                |
>        4 - 8    ns |          0 |                                                |
>        8 - 16   ns |          0 |                                                |
>       16 - 32   ns |          0 |                                                |
>       32 - 64   ns |        125 |                                                |
>       64 - 128  ns |        335 |                                                |
>      128 - 256  ns |       2155 | ####                                           |
>      256 - 512  ns |       9996 | ###################                            |
>      512 - 1024 ns |       4958 | #########                                      |
>        1 - 2    us |       4636 | #########                                      |
>        2 - 4    us |       1053 | ##                                             |
>        4 - 8    us |         15 |                                                |
>        8 - 16   us |          1 |                                                |
>       16 - 32   us |          0 |                                                |
>       32 - 64   us |          0 |                                                |
>       64 - 128  us |          0 |                                                |
>      128 - 256  us |          0 |                                                |
>      256 - 512  us |          0 |                                                |
>      512 - 1024 us |          0 |                                                |
>        1 - ...  ms |          0 |                                                |
>   root@number:~#
> 
> [...]

Applied to perf-tools-next, thanks!

Best regards,
Namhyung