netdev - [PATCH v2 0/4] selftests: add a new test driver for sysfs

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Message-Id: <20210703004632.621662-1-mcgrof@kernel.org>
Date:   Fri,  2 Jul 2021 17:46:28 -0700
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     gregkh@...uxfoundation.org, tj@...nel.org, shuah@...nel.org,
        akpm@...ux-foundation.org, rafael@...nel.org, davem@...emloft.net,
        kuba@...nel.org, ast@...nel.org, andriin@...com,
        daniel@...earbox.net, atenart@...nel.org, alobakin@...me,
        weiwan@...gle.com, ap420073@...il.com
Cc:     jeyu@...nel.org, ngupta@...are.org,
        sergey.senozhatsky.work@...il.com, minchan@...nel.org,
        mcgrof@...nel.org, axboe@...nel.dk, mbenes@...e.com,
        jpoimboe@...hat.com, tglx@...utronix.de, keescook@...omium.org,
        jikos@...nel.org, rostedt@...dmis.org, peterz@...radead.org,
        linux-block@...r.kernel.org, netdev@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/4] selftests: add a new test driver for sysfs

This v2 rebases onto the latest linux-next tag, next-20210701. A few
changes were needed, namely:

  1) changes kernfs_init_failure_injection() to return int instead
     of void. On the latest linux-next we have a new static build
     check for this, so this mistake was captured when building.

  2) I made kernfs_init_failure_injection static

  3) lib/test_sysfs.c moved to the new blk_alloc_disk() added by
     Christoph as direct queue allocation is no longer supported,
     ie, blk_alloc_queue() is no longer exported. This work was
     done by Christoph in preparation to help make add_disk*()
     callers eventually return an error code and make the error
     handling much saner. Because of this same change
     blk_cleanup_queue() is no longer needed so we embrace
     the shiny new blk_cleanup_disk().

I've put this up on my linux-next git tree [0] under the branch
named 20210701-sysfs-fix-races-v2.

[0] https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git/log/?h=20210701-sysfs-fix-races-v2

Luis Chamberlain (4):
  selftests: add tests_sysfs module
  kernfs: add initial failure injection support
  test_sysfs: add support to use kernfs failure injection
  test_sysfs: demonstrate deadlock fix

 .../fault-injection/fault-injection.rst       |   22 +
 MAINTAINERS                                   |    9 +-
 fs/kernfs/Makefile                            |    1 +
 fs/kernfs/failure-injection.c                 |   83 +
 fs/kernfs/file.c                              |   13 +
 fs/kernfs/kernfs-internal.h                   |   72 +
 include/linux/kernfs.h                        |    5 +
 lib/Kconfig.debug                             |   23 +
 lib/Makefile                                  |    1 +
 lib/test_sysfs.c                              | 1027 ++++++++++++
 tools/testing/selftests/sysfs/Makefile        |   12 +
 tools/testing/selftests/sysfs/config          |    5 +
 tools/testing/selftests/sysfs/sysfs.sh        | 1376 +++++++++++++++++
 13 files changed, 2648 insertions(+), 1 deletion(-)
 create mode 100644 fs/kernfs/failure-injection.c
 create mode 100644 lib/test_sysfs.c
 create mode 100644 tools/testing/selftests/sysfs/Makefile
 create mode 100644 tools/testing/selftests/sysfs/config
 create mode 100755 tools/testing/selftests/sysfs/sysfs.sh

-- 
2.27.0