linux-toradex.git/lib/fault-inject.c, branch v3.10.2

lib/: rename random32() to prandom_u32()

2013-04-30T01:28:42+00:00

Use preferable function name which implies using a pseudo-random
number generator.

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

fault-inject: avoid call to random32() if fault injection is disabled

2012-06-20T21:39:36+00:00

After enabling CONFIG_FAILSLAB I noticed random32 in profiles even if slub
fault injection wasn't enabled at runtime.

should_fail forces a comparison against random32() even if probability is
0:

        if (attr->probability <= random32() % 100)
                return false;

Add a check up front for probability == 0 and avoid all of the more
complicated checks.

Signed-off-by: Anton Blanchard 
Acked-by: Akinobu Mita 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

lib: reduce the use of module.h wherever possible

2012-03-07T20:04:04+00:00

For files only using THIS_MODULE and/or EXPORT_SYMBOL, map
them onto including export.h -- or if the file isn't even
using those, then just delete the include.  Fix up any implicit
include dependencies that were being masked by module.h along
the way.

Signed-off-by: Paul Gortmaker

switch debugfs to umode_t

2012-01-04T03:54:56+00:00

Signed-off-by: Al Viro

fault-inject: export setup_fault_attr()

2011-10-26T20:32:11+00:00

mmc_core module needs to use setup_fault_attr() in order
to set fault injection attributes during module load time.

Signed-off-by: Per Forlin 
Reviewed-by: Akinobu Mita 
Signed-off-by: Chris Ball

fault-inject: export fault injection functions

2011-10-26T19:43:34+00:00

Export symbols should_fail() and fault_create_debugfs_attr() in order
to let modules utilize the fault injection framework.

Signed-off-by: Per Forlin 
Acked-by: Akinobu Mita 
Signed-off-by: Chris Ball

fault-injection: add ability to export fault_attr in arbitrary directory

2011-08-04T00:25:20+00:00

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

fault-injection: use debugfs_remove_recursive

2011-07-26T23:49:46+00:00

Use debugfs_remove_recursive() to simplify initialization and
deinitialization of fault injection debugfs files.

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

fault-injection: cleanup simple attribute of stacktrace_depth

2011-07-26T23:49:46+00:00

Minor cosmetic changes for simple attribute of stacktrace_depth:

 - use min_t()
 - reduce #ifdef by moving a function
 - do not use partly capitalized function name

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

fault-injection: do not include unneeded header

2011-07-26T23:49:46+00:00

No need to include linux/kallsyms.h.

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