linux/tools/lib/lockdep, branch v4.9

tools/lib/lockdep: Fix unsupported 'basename -s' in run_tests.sh

2016-03-30T10:45:56Z

Here on Ubuntu/precise I have GNU/coreutils v8.13 installed where 'basename -s' is not supported. The result is that run_tests.sh is not done properly. How to reproduce: $ cd $BUILD_DIR $ LC_ALL=C make -C tools/ liblockdep $ cd tools/lib/lockdep/ $ LC_ALL=C ./run_tests.sh basename: invalid option -- 's' Try `basename --help' for more information. ... timeout: failed to run command `./tests/': Permission denied FAILED! rm: cannot remove `tests/': Is a directory Due to unsupported basename the tests programs are not generated and cannot be removed. Fix this by doing a compatible basename invocation and check for the existence of generated tests programs. For more details see this LKML thread: http://marc.info/?t=145906667300001&r=1&w=2 Signed-off-by: Sedat Dilek Cc: Boqun Feng Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Sasha Levin (maintainer:LIBLOCKDEP) Cc: Shuah Khan Cc: Theodore Ts'o Cc: Thomas Gleixner Cc: linux-fsdevel Link: http://lkml.kernel.org/r/1459326169-7009-1-git-send-email-sedat.dilek@gmail.com Signed-off-by: Ingo Molnar

tools/lib/lockdep: Fix link creation warning

2016-02-29T09:32:28Z

This warning triggers if the .so library has already been linked: triton:~/tip/tools/lib/lockdep> make CC common.o CC lockdep.o CC rbtree.o LD liblockdep-in.o LD liblockdep.a ln: failed to create symbolic link ‘liblockdep.so’: File exists LD liblockdep.so.4.5.0-rc6 Overwrite the link. Cc: Alfredo Alvarez Fernandez Cc: Andrew Morton Cc: Linus Torvalds Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Sasha Levin Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

tools/lib/lockdep: Add tests for AA and ABBA locking

2016-02-29T09:29:33Z

Add test for AA and 2 threaded ABBA locking. Rename AA.c to ABA.c since it was implementing an ABA instead of a pure AA. Now both cases are covered. The expected output for AA.c is that the process blocks and lockdep reports a deadlock. ABBA_2threads.c differs from ABBA.c in that lockdep keeps separate chains of held locks per task. This can lead to different behaviour regarding lock detection. The expected output for this test is that the process blocks and lockdep reports a circular locking dependency. These tests found a lockdep bug - fixed by the next commit. Signed-off-by: Alfredo Alvarez Fernandez Cc: Andrew Morton Cc: Linus Torvalds Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Sasha Levin Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1455864533-7536-3-git-send-email-alfredoalvarezernandez@gmail.com Signed-off-by: Ingo Molnar

tools/lib/lockdep: Add userspace version of READ_ONCE()

2016-02-29T09:29:27Z

This was added to the kernel code in <1658d35ead5d> ("list: Use READ_ONCE() when testing for empty lists"). There's nothing special we need to do about it in userspace. Signed-off-by: Alfredo Alvarez Fernandez Cc: Andrew Morton Cc: Linus Torvalds Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Sasha Levin Cc: Thomas Gleixner Link: http://lkml.kernel.org/r/1455864533-7536-2-git-send-email-alfredoalvarezernandez@gmail.com Signed-off-by: Ingo Molnar

tools/lib/lockdep: Fix the build on recent kernels

2016-02-29T09:29:26Z

The following upstream commit: 4a389810bc3c ("kernel/locking/lockdep.c: convert hash tables to hlists") broke the tools/lib/lockdep build. Add trivial RCU wrappers to fix it. These wrappers should probably be moved into their own header file. Cc: Andrew Morton Cc: Andrey Ryabinin Cc: Linus Torvalds Cc: Mike Krinkin Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Sasha Levin Signed-off-by: Ingo Molnar

locking/lockdep: Eliminate lockdep_init()

2016-02-09T11:03:25Z

Lockdep is initialized at compile time now. Get rid of lockdep_init(). Signed-off-by: Andrey Ryabinin Signed-off-by: Andrew Morton Cc: Linus Torvalds Cc: Mike Krinkin Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Cc: mm-commits@vger.kernel.org Signed-off-by: Ingo Molnar

tools lockdep: Add *.cmd files clean up

2016-01-11T15:09:05Z

Add *.cmd files to be removed within clean target. Reported-by: Arnaldo Carvalho de Melo Signed-off-by: Jiri Olsa Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wang Nan Link: http://lkml.kernel.org/r/1452509693-13452-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

Merge branch 'liblockdep-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux into locking/urgent

2015-11-09T07:45:42Z

Pull liblockdep fixes from Sasha Levin: " ... three fixes for liblockdep. Just keeping up with kernel code changes and new gcc versions." Signed-off-by: Ingo Molnar

tools/liblockdep: explicitly declare lockdep API we call from liblockdep

2015-11-06T21:01:37Z

It seems that newer gcc complains about lack of explicit declaration for some of the API we use, add it in. Signed-off-by: Sasha Levin

tools/liblockdep: add userspace versions of WRITE_ONCE and RCU_INIT_POINTER

2015-11-06T21:01:36Z

These were added to the kernel code in cee34d88c ("lockdep: Fix a race between /proc/lock_stat and module unload"). There's nothing special we need to do about them in userspace. Signed-off-by: Sasha Levin