Re: [PATCH v2 3/5] perf/core: add KUnit tests for AUX kernel-consumer API

[sashiko-bot@kernel.org]

> From: Lian Wang <lianux.mm@gmail.com>
> 
> Add a KUnit test suite (perf_aux_kernel) for the perf_event_setup_aux(),
> perf_event_release_aux(), perf_event_aux_head(), perf_event_aux_tail_set()
> and perf_event_aux_copy() functions.
> 
> A self-contained dummy AUX PMU is registered in suite_init so that
> every test is deterministic and needs no hardware.  The dummy
> setup_aux pre-fills all pages with a recognisable pattern (0xAB);
> aux_test_produce() advances the published head via
> perf_aux_output_begin/end, and copy tests verify the pattern.
> 
> 39 test cases cover setup/release lifecycle, writer admission and
> blocking, head/tail/copy accessor contract validation (including
> wrap-around, boundary cursors, and data correctness), buffer-full
> [ ... ]
> Gated by CONFIG_PERF_AUX_KERNEL_KUNIT_TEST.
> 
> Co-developed-by: Kunwu Chan <kunwu.chan@gmail.com>
> Signed-off-by: Kunwu Chan <kunwu.chan@gmail.com>
> Signed-off-by: Lian Wang <lianux.mm@gmail.com>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review · https://sashiko.dev/#/patchset/20261009160010.1829642-1-kunwu.chan@gmail.com?part=3