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authorDmitry Monakhov <dmonakhov@openvz.org>2010-02-26 01:36:12 -0500
committerPekka Enberg <penberg@cs.helsinki.fi>2010-02-26 12:19:39 -0500
commit4c13dd3b48fcb6fbe44f241eb11a057ecd1cba75 (patch)
treed9875477b9eb48ad598da8cbc36b473c941828ae /Documentation
parent60b341b778cc2929df16c0a504c91621b3c6a4ad (diff)
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>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/vm/slub.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/vm/slub.txt b/Documentation/vm/slub.txt
index b37300edf27c..07375e73981a 100644
--- a/Documentation/vm/slub.txt
+++ b/Documentation/vm/slub.txt
@@ -41,6 +41,7 @@ Possible debug options are
41 P Poisoning (object and padding) 41 P Poisoning (object and padding)
42 U User tracking (free and alloc) 42 U User tracking (free and alloc)
43 T Trace (please only use on single slabs) 43 T Trace (please only use on single slabs)
44 A Toggle failslab filter mark for the cache
44 O Switch debugging off for caches that would have 45 O Switch debugging off for caches that would have
45 caused higher minimum slab orders 46 caused higher minimum slab orders
46 - Switch all debugging off (useful if the kernel is 47 - Switch all debugging off (useful if the kernel is