Eric Lee / smarc-fsl-linux-kernel

19 Jun, 2017

1 commit

  • ccdab3d6e   xfs: define bug_on_assert debug mode sysfs tunable ... Browse Code »

    In DEBUG mode, assert failures unconditionally trigger a kernel BUG.
    This is useful in diagnostic situations to panic a system and
    collect detailed state information at the time of a failure.

    This can also cause problems in cases where DEBUG mode code is
    desired but it is preferable not trigger kernel BUGs on assert
    failure. For example, during development of new code or during
    certain xfstests tests that intentionally cause corruption and test
    the kernel for survival (but otherwise may expect to trigger assert
    failures).

    To provide additional flexibility, create the
    /fs/xfs/debug/bug_on_assert tunable to configure assert
    failure behavior at runtime. This tunable is only available in DEBUG
    mode and is enabled by default to preserve existing default
    behavior. When disabled, assert failures in DEBUG mode result in
    kernel warnings.

    Signed-off-by: Brian Foster
    Reviewed-by: Darrick J. Wong
    Signed-off-by: Darrick J. Wong

    Brian Foster
     

12 Oct, 2015

1 commit

  • 847f9f687   xfs: more info from kmem deadlocks and high-level error msgs ... Browse Code »

    In an effort to get more useful out of "possible memory
    allocation deadlock" messages, print the size of the
    requested allocation, and dump the stack if the xfs error
    level is tuned high.

    The stack dump is implemented in define_xfs_printk_level()
    for error levels >= LOGLEVEL_ERR, partly because it
    seems generically useful, and also because kmem.c has
    no knowledge of xfs error level tunables or other such bits,
    it's very kmem-specific.

    Signed-off-by: Eric Sandeen
    Reviewed-by: Dave Chinner
    Signed-off-by: Dave Chinner

    Eric Sandeen
     

28 Nov, 2014

2 commits

24 Oct, 2013

1 commit

  • 239880ef6   xfs: decouple log and transaction headers ... Browse Code »

    xfs_trans.h has a dependency on xfs_log.h for a couple of
    structures. Most code that does transactions doesn't need to know
    anything about the log, but this dependency means that they have to
    include xfs_log.h. Decouple the xfs_trans.h and xfs_log.h header
    files and clean up the includes to be in dependency order.

    In doing this, remove the direct include of xfs_trans_reserve.h from
    xfs_trans.h so that we remove the dependency between xfs_trans.h and
    xfs_mount.h. Hence the xfs_trans.h include can be moved to the
    indicate the actual dependencies other header files have on it.

    Note that these are kernel only header files, so this does not
    translate to any userspace changes at all.

    Signed-off-by: Dave Chinner
    Reviewed-by: Ben Myers
    Signed-off-by: Ben Myers

    Dave Chinner
     

08 May, 2013

1 commit

  • 742ae1e35   xfs: introduce CONFIG_XFS_WARN ... Browse Code »

    Running a CONFIG_XFS_DEBUG kernel in production environments is not
    the best idea as it introduces significant overhead, can change
    the behaviour of algorithms (such as allocation) to improve test
    coverage, and (most importantly) panic the machine on non-fatal
    errors.

    There are many cases where all we want to do is run a
    kernel with more bounds checking enabled, such as is provided by the
    ASSERT() statements throughout the code, but without all the
    potential overhead and drawbacks.

    This patch converts all the ASSERT statements to evaluate as
    WARN_ON(1) statements and hence if they fail dump a warning and a
    stack trace to the log. This has minimal overhead and does not
    change any algorithms, and will allow us to find strange "out of
    bounds" problems more easily on production machines.

    There are a few places where assert statements contain debug only
    code. These are converted to be debug-or-warn only code so that we
    still get all the assert checks in the code.

    Signed-off-by: Dave Chinner
    Reviewed-by: Brian Foster
    Signed-off-by: Ben Myers

    Dave Chinner
     

15 May, 2012

1 commit

  • 60a34607b   xfs: move xfsagino_t to xfs_types.h ... Browse Code »

    Untangle the header file includes a bit by moving the definition of
    xfs_agino_t to xfs_types.h. This removes the dependency that xfs_ag.h has on
    xfs_inum.h, meaning we don't need to include xfs_inum.h everywhere we include
    xfs_ag.h.

    Signed-off-by: Dave Chinner
    Reviewed-by: Mark Tinguely
    Signed-off-by: Ben Myers

    Dave Chinner
     

13 Aug, 2011

1 commit

  • c59d87c46   xfs: remove subdirectories ... Browse Code »

    Use the move from Linux 2.6 to Linux 3.x as an excuse to kill the
    annoying subdirectories in the XFS source code. Besides the large
    amount of file rename the only changes are to the Makefile, a few
    files including headers with the subdirectory prefix, and the binary
    sysctl compat code that includes a header under fs/xfs/ from
    kernel/.

    Signed-off-by: Christoph Hellwig
    Signed-off-by: Alex Elder

    Christoph Hellwig