kernel_samsung_sm7125

jenna

Commit Graph

Author	SHA1	Message	Date
Dmitry Monakhov	4c13dd3b48	failslab: add ability to filter slab caches This patch allow to inject faults only for specific slabs. In order to preserve default behavior cache filter is off by default (all caches are faulty). One may define specific set of slabs like this: # mark skbuff_head_cache as faulty echo 1 > /sys/kernel/slab/skbuff_head_cache/failslab # Turn on cache filter (off by default) echo 1 > /sys/kernel/debug/failslab/cache-filter # Turn on fault injection echo 1 > /sys/kernel/debug/failslab/times echo 1 > /sys/kernel/debug/failslab/probability Acked-by: David Rientjes <rientjes@google.com> Acked-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>	15 years ago
Pekka Enberg	255d11bc91	kmemtrace, mm: fix slab.h dependency problem in mm/failslab.c Impact: cleanup mm/failslab.c depends on slab.h without including it: CC mm/failslab.o mm/failslab.c: In function ‘should_failslab’: mm/failslab.c:16: error: ‘__GFP_NOFAIL’ undeclared (first use in this function) mm/failslab.c:16: error: (Each undeclared identifier is reported only once mm/failslab.c:16: error: for each function it appears in.) mm/failslab.c:19: error: ‘__GFP_WAIT’ undeclared (first use in this function) make[1]: * [mm/failslab.o] Error 1 make: * [mm] Error 2 It gets included implicitly currently - but this will not be the case with upcoming kmemtrace changes. Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> LKML-Reference: <1237888761.25315.69.camel@penberg-laptop> Signed-off-by: Ingo Molnar <mingo@elte.hu>	16 years ago
Akinobu Mita	773ff60e84	SLUB: failslab support Currently fault-injection capability for SLAB allocator is only available to SLAB. This patch makes it available to SLUB, too. [penberg@cs.helsinki.fi: unify slab and slub implementations] Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>	16 years ago

Author

SHA1

Message

Date

Dmitry Monakhov

4c13dd3b48

failslab: add ability to filter slab caches

This patch allow to inject faults only for specific slabs.
In order to preserve default behavior cache filter is off by
default (all caches are faulty).

One may define specific set of slabs like this:
# mark skbuff_head_cache as faulty
echo 1 > /sys/kernel/slab/skbuff_head_cache/failslab
# Turn on cache filter (off by default)
echo 1 > /sys/kernel/debug/failslab/cache-filter
# Turn on fault injection
echo 1 > /sys/kernel/debug/failslab/times
echo 1 > /sys/kernel/debug/failslab/probability

Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>

15 years ago

Pekka Enberg

255d11bc91

kmemtrace, mm: fix slab.h dependency problem in mm/failslab.c

Impact: cleanup

mm/failslab.c depends on slab.h without including it:

    CC      mm/failslab.o
  mm/failslab.c: In function ‘should_failslab’:
  mm/failslab.c:16: error: ‘__GFP_NOFAIL’ undeclared (first use in this function)
  mm/failslab.c:16: error: (Each undeclared identifier is reported only once
  mm/failslab.c:16: error: for each function it appears in.)
  mm/failslab.c:19: error: ‘__GFP_WAIT’ undeclared (first use in this function)
  make[1]: *** [mm/failslab.o] Error 1
  make: *** [mm] Error 2

It gets included implicitly currently - but this will not be the
case with upcoming kmemtrace changes.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
LKML-Reference: <1237888761.25315.69.camel@penberg-laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

16 years ago

Akinobu Mita

773ff60e84

SLUB: failslab support

Currently fault-injection capability for SLAB allocator is only
available to SLAB. This patch makes it available to SLUB, too.

[penberg@cs.helsinki.fi: unify slab and slub implementations]
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Matt Mackall <mpm@selenic.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>

16 years ago

3 Commits (486f50ca796a2572c42c34dd4378cdc8eeb0b137)