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binder: Convert binder_alloc selftests to KUnit

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Convert the existing binder_alloc_selftest tests into KUnit tests. These
tests allocate and free an exhaustive combination of buffers with
various sizes and alignments. This change allows them to be run without
blocking or otherwise interfering with other processes in binder.

This test is refactored into more meaningful cases in the subsequent
patch.

Signed-off-by: Tiffany Yang <ynaffit@google.com>
Acked-by: Carlos Llamas <cmllamas@google.com>
Link: https://lore.kernel.org/r/20250714185321.2417234-6-ynaffit@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tiffany Yang
2025-07-14 11:53:18 -07:00
committed by Greg Kroah-Hartman
parent 5e024582f4
commit f6544dcdd0
7 changed files with 282 additions and 366 deletions
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3
drivers/android/binder_alloc.c
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@@ -697,6 +697,7 @@ struct binder_buffer *binder_alloc_new_buf(struct binder_alloc *alloc,
out:
return buffer;
}
EXPORT_SYMBOL_IF_KUNIT(binder_alloc_new_buf);
static unsigned long buffer_start_page(struct binder_buffer *buffer)
{
@@ -875,6 +876,7 @@ void binder_alloc_free_buf(struct binder_alloc *alloc,
binder_free_buf_locked(alloc, buffer);
mutex_unlock(&alloc->mutex);
}
EXPORT_SYMBOL_IF_KUNIT(binder_alloc_free_buf);
/**
* binder_alloc_mmap_handler() - map virtual address space for proc
@@ -1211,6 +1213,7 @@ err_mmap_read_lock_failed:
err_mmget:
return LRU_SKIP;
}
EXPORT_SYMBOL_IF_KUNIT(binder_alloc_free_page);
static unsigned long
binder_shrink_count(struct shrinker *shrink, struct shrink_control *sc)