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| author | Arnaldo Carvalho de Melo <acme@kernel.org> | 2024-10-29 22:29:02 +0300 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2024-10-31 09:46:43 +0300 |
| commit | 064d569e20e82c065b1dec9d20c29c7087bb1a00 (patch) | |
| tree | 07f369f89911a5237f2be71fe8998f4b8aa04318 /tools/perf/util/trace-event-scripting.c | |
| parent | 8c0d1202bad3aa6e40fb078dc08158f0bb4e03e2 (diff) | |
| download | linux-064d569e20e82c065b1dec9d20c29c7087bb1a00.tar.xz | |
perf ftrace latency: Fix unit on histogram first entry when using --use-nsec
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:~#
After:
root@number:~# perf ftrace latency --use-nsec -T switch_mm_irqs_off -a sleep 2
# DURATION | COUNT | GRAPH |
0 - 1 ns | 0 | |
1 - 2 ns | 0 | |
2 - 4 ns | 0 | |
4 - 8 ns | 0 | |
8 - 16 ns | 0 | |
16 - 32 ns | 0 | |
32 - 64 ns | 19 | |
64 - 128 ns | 94 | |
128 - 256 ns | 2191 | #### |
256 - 512 ns | 9719 | #################### |
512 - 1024 ns | 5330 | ########### |
1 - 2 us | 4104 | ######## |
2 - 4 us | 807 | # |
4 - 8 us | 9 | |
8 - 16 us | 0 | |
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:~#
Fixes: 84005bb6148618cc ("perf ftrace latency: Add -n/--use-nsec option")
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Gabriele Monaco <gmonaco@redhat.com>
Link: https://lore.kernel.org/r/ZyE3frB-hMXHCnMO@x1
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions