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 <[email protected]>
Acked-by: Akinobu Mita <[email protected]>
Acked-by: Christoph Lameter <[email protected]>
Signed-off-by: Dmitry Monakhov <[email protected]>
Signed-off-by: Pekka Enberg <[email protected]>

0 files changed, 0 insertions, 0 deletions