Eric Lee / smarc-fsl-linux-kernel

23 Oct, 2015

1 commit

14 Dec, 2014

1 commit

  • 6adc4a22f   fault-inject: add ratelimit option ... Browse Code »

    Current debug levels are not optimal. Especially if one want to provoke
    big numbers of faults(broken device simulator) then any verbose level will
    produce giant numbers of identical logging messages. Let's add ratelimit
    parameter for that purpose.

    Signed-off-by: Dmitry Monakhov
    Acked-by: Akinobu Mita
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Dmitry Monakhov
     

04 Jun, 2013

1 commit

  • 3a76e5e09   debugfs: add get/set for atomic types ... Browse Code »

    debugfs currently lack the ability to create attributes
    that set/get atomic_t values.

    This patch adds support for this through a new
    debugfs_create_atomic_t() function.

    Signed-off-by: Seth Jennings
    Acked-by: Greg Kroah-Hartman
    Acked-by: Mel Gorman
    Acked-by: Rik van Riel
    Acked-by: Konrad Rzeszutek Wilk
    Signed-off-by: Greg Kroah-Hartman

    Seth Jennings
     

30 Apr, 2013

1 commit

21 Jun, 2012

1 commit

08 Mar, 2012

1 commit

04 Jan, 2012

1 commit

27 Oct, 2011

2 commits

04 Aug, 2011

1 commit

  • dd48c085c   fault-injection: add ability to export fault_attr in arbitrary directory ... Browse Code »

    init_fault_attr_dentries() is used to export fault_attr via debugfs.
    But it can only export it in debugfs root directory.

    Per Forlin is working on mmc_fail_request which adds support to inject
    data errors after a completed host transfer in MMC subsystem.

    The fault_attr for mmc_fail_request should be defined per mmc host and
    export it in debugfs directory per mmc host like
    /sys/kernel/debug/mmc0/mmc_fail_request.

    init_fault_attr_dentries() doesn't help for mmc_fail_request. So this
    introduces fault_create_debugfs_attr() which is able to create a
    directory in the arbitrary directory and replace
    init_fault_attr_dentries().

    [akpm@linux-foundation.org: extraneous semicolon, per Randy]
    Signed-off-by: Akinobu Mita
    Tested-by: Per Forlin
    Cc: Jens Axboe
    Cc: Christoph Lameter
    Cc: Pekka Enberg
    Cc: Matt Mackall
    Cc: Randy Dunlap
    Cc: Stephen Rothwell
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Akinobu Mita
     

27 Jul, 2011

3 commits

12 Oct, 2009

1 commit

07 Jan, 2009

1 commit

09 Feb, 2008

1 commit

  • 8b88b0998   libfs: allow error return from simple attributes ... Browse Code »

    Sometimes simple attributes might need to return an error, e.g. for
    acquiring a mutex interruptibly. In fact we have that situation in
    spufs already which is the original user of the simple attributes. This
    patch merged the temporarily forked attributes in spufs back into the
    main ones and allows to return errors.

    [akpm@linux-foundation.org: build fix]
    Signed-off-by: Christoph Hellwig
    Cc:
    Cc: Arnd Bergmann
    Cc: Greg KH
    Cc: Al Viro
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Hellwig
     

25 Jul, 2007

1 commit

09 May, 2007

1 commit

  • ab1b6f03a   simplify the stacktrace code ... Browse Code »

    Simplify the stacktrace code:

    - remove the unused task argument to save_stack_trace, it's always
    current
    - remove the all_contexts flag, it's alwasy 0

    Signed-off-by: Christoph Hellwig
    Cc: Paul Mundt
    Cc: Ralf Baechle
    Cc: Martin Schwidefsky
    Cc: "David S. Miller"
    Cc: Andi Kleen
    Cc: Akinobu Mita
    Acked-by: Ingo Molnar
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Hellwig
     

21 Feb, 2007

1 commit

  • 1df49008f   [PATCH] fault injection: split up stacktrace filter Kconfig option ... Browse Code »

    There is no prompt for CONFIG_STACKTRACE, so FAULT_INJECTION cannot be
    selected without LOCKDEP enabled. (found by Paolo 'Blaisorblade'
    Giarrusso)

    In order to fix such broken Kconfig dependency, this patch splits up the
    stacktrace filter support for fault injection by new Kconfig option, which
    enables to use fault injection on the architecture which doesn't have
    general stacktrace support.

    Cc: "Paolo 'Blaisorblade' Giarrusso"
    Signed-off-by: Akinobu Mita
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Akinobu Mita
     

16 Dec, 2006

1 commit

  • d1526e2cd   Remove stack unwinder for now ... Browse Code »

    It has caused more problems than it ever really solved, and is
    apparently not getting cleaned up and fixed. We can put it back when
    it's stable and isn't likely to make warning or bug events worse.

    In the meantime, enable frame pointers for more readable stack traces.

    Signed-off-by: Linus Torvalds

    Linus Torvalds
     

09 Dec, 2006

6 commits

  • f1729c28a   [PATCH] fault-injection: optimize and simplify should_fail() ... Browse Code »

    Trivial optimization and simplification of should_fail().

    Do cheaper disqualification tests first (performance gain not quantified).
    Simplify logic; eliminate goto.

    Signed-off-by: Don Mullis
    Cc: Akinobu Mita
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Don Mullis
     
  • a124c28ef   [PATCH] fault-injection: Clamp debugfs stacktrace-depth to MAX_STACK_TRACE_DEPTH ... Browse Code »

    Clamp /debug/fail*/stacktrace-depth to MAX_STACK_TRACE_DEPTH. Ensures that a
    read of /debug/fail*/stacktrace-depth always returns a truthful answer.

    Signed-off-by: Don Mullis
    Cc: Akinobu Mita
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Don Mullis
     
  • 08b3df2d1   [PATCH] fault-injection: Use bool-true-false throughout ... Browse Code »

    Use bool-true-false throughout.

    Signed-off-by: Don Mullis
    Cc: Akinobu Mita
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Don Mullis
     
  • 329409aed   [PATCH] fault injection: stacktrace filtering ... Browse Code »

    This patch provides stacktrace filtering feature.

    The stacktrace filter allows failing only for the caller you are
    interested in.

    For example someone may want to inject kmalloc() failures into
    only e100 module. they want to inject not only direct kmalloc() call,
    but also indirect allocation, too.

    - e100_poll --> netif_receive_skb --> packet_rcv_spkt --> skb_clone
    --> kmem_cache_alloc

    This patch enables to detect function calls like this by stacktrace
    and inject failures. The script Documentaion/fault-injection/failmodule.sh
    helps it.

    The range of text section of loaded e100 is expected to be
    [/sys/module/e100/sections/.text, /sys/module/e100/sections/.exit.text)

    So failmodule.sh stores these values into /debug/failslab/address-start
    and /debug/failslab/address-end. The maximum stacktrace depth is specified
    by /debug/failslab/stacktrace-depth.

    Please see the example that demonstrates how to inject slab allocation
    failures only for a specific module
    in Documentation/fault-injection/fault-injection.txt

    [dwm@meer.net: reject failure if any caller lies within specified range]
    Signed-off-by: Akinobu Mita
    Signed-off-by: Don Mullis
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Akinobu Mita
     
  • f4f154fd9   [PATCH] fault injection: process filtering for fault-injection capabilities ... Browse Code »

    This patch provides process filtering feature.
    The process filter allows failing only permitted processes
    by /proc//make-it-fail

    Please see the example that demostrates how to inject slab allocation
    failures into module init/cleanup code
    in Documentation/fault-injection/fault-injection.txt

    Signed-off-by: Akinobu Mita
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Akinobu Mita
     
  • 6ff1cb355   [PATCH] fault-injection capabilities infrastructure ... Browse Code »

    This patch provides base functions implement to fault-injection
    capabilities.

    - The function should_fail() is taken from failmalloc-1.0
    (http://www.nongnu.org/failmalloc/)

    [akpm@osdl.org: cleanups, comments, add __init]
    Cc:
    Signed-off-by: Akinobu Mita
    Signed-off-by: Don Mullis
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Akinobu Mita