linux-kernel - [PATCH v4 0/6] binder: Set up KUnit tests for alloc

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Message-ID: <20250717011011.3365074-1-ynaffit@google.com>
Date: Wed, 16 Jul 2025 18:10:03 -0700
From: Tiffany Yang <ynaffit@...gle.com>
To: linux-kernel@...r.kernel.org
Cc: keescook@...gle.com, kernel-team@...roid.com, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
	"Arve Hjønnevåg" <arve@...roid.com>, Todd Kjos <tkjos@...roid.com>, Martijn Coenen <maco@...roid.com>, 
	Joel Fernandes <joelagnelf@...dia.com>, Christian Brauner <brauner@...nel.org>, 
	Carlos Llamas <cmllamas@...gle.com>, Suren Baghdasaryan <surenb@...gle.com>, 
	Brendan Higgins <brendan.higgins@...ux.dev>, David Gow <davidgow@...gle.com>, 
	Rae Moar <rmoar@...gle.com>, linux-kselftest@...r.kernel.org, 
	kunit-dev@...glegroups.com
Subject: [PATCH v4 0/6] binder: Set up KUnit tests for alloc

Hello,

binder_alloc_selftest provides a robust set of checks for the binder
allocator, but it rarely runs because it must hook into a running binder
process and block all other binder threads until it completes. The test
itself is a good candidate for conversion to KUnit, and it can be
further isolated from user processes by using a test-specific lru
freelist instead of the global one. This series converts the selftest
to KUnit to make it less burdensome to run and to set up a foundation
for unit testing future binder_alloc changes.

Thanks,
Tiffany

Tiffany Yang (6):
  binder: Fix selftest page indexing
  binder: Store lru freelist in binder_alloc
  kunit: test: Export kunit_attach_mm()
  binder: Scaffolding for binder_alloc KUnit tests
  binder: Convert binder_alloc selftests to KUnit
  binder: encapsulate individual alloc test cases

 drivers/android/Kconfig                    |  15 +-
 drivers/android/Makefile                   |   2 +-
 drivers/android/binder.c                   |  10 +-
 drivers/android/binder_alloc.c             |  39 +-
 drivers/android/binder_alloc.h             |  14 +-
 drivers/android/binder_alloc_selftest.c    | 306 -----------
 drivers/android/binder_internal.h          |   4 +
 drivers/android/tests/.kunitconfig         |   7 +
 drivers/android/tests/Makefile             |   6 +
 drivers/android/tests/binder_alloc_kunit.c | 572 +++++++++++++++++++++
 include/kunit/test.h                       |  12 +
 lib/kunit/user_alloc.c                     |   4 +-
 12 files changed, 651 insertions(+), 340 deletions(-)
 delete mode 100644 drivers/android/binder_alloc_selftest.c
 create mode 100644 drivers/android/tests/.kunitconfig
 create mode 100644 drivers/android/tests/Makefile
 create mode 100644 drivers/android/tests/binder_alloc_kunit.c

-- 
2.50.0.727.gbf7dc18ff4-goog