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| author | Thadeu Lima de Souza Cascardo <cascardo@igalia.com> | 2025-04-23 11:45:43 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-25 16:56:42 +0300 |
| commit | 45f0de4f8dc385cd8959d884cd89b3b84c76b7f9 (patch) | |
| tree | d0ec82e8a576d58b46465e291ca5336ad17c405c /tools/perf/scripts/python/task-analyzer.py | |
| parent | 31b636d2c41613e3bd36256a4bd53e9dacfa2677 (diff) | |
| download | linux-45f0de4f8dc385cd8959d884cd89b3b84c76b7f9.tar.xz | |
char: misc: add test cases
Add test cases for static and dynamic minor number allocation and
deallocation.
While at it, improve description and test suite name.
Some of the cases include:
- that static and dynamic allocation reserved the expected minors.
- that registering duplicate minors or duplicate names will fail.
- that failing to create a sysfs file (due to duplicate names) will
deallocate the dynamic minor correctly.
- that dynamic allocation does not allocate a minor number in the static
range.
- that there are no collisions when mixing dynamic and static allocations.
- that opening devices with various minor device numbers work.
- that registering a static number in the dynamic range won't conflict with
a dynamic allocation.
This last test verifies the bug fixed by commit 6d04d2b554b1 ("misc:
misc_minor_alloc to use ida for all dynamic/misc dynamic minors") has not
regressed.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@igalia.com>
Link: https://lore.kernel.org/r/20250423-misc-dynrange-v4-2-133b5ae4ca18@igalia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/task-analyzer.py')
0 files changed, 0 insertions, 0 deletions