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author | Akinobu Mita <akinobu.mita@gmail.com> | 2006-12-08 05:39:44 -0500 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 11:29:02 -0500 |
commit | 8a8b6502fb669c3a0638a08955442814cedc86b1 (patch) | |
tree | 2e49652f904eb821f2fa7ae8cab0dd9b756772d9 /Documentation | |
parent | 6ff1cb355e628f8fc55fa2d01e269e5e1bbc2fe9 (diff) |
[PATCH] fault-injection capability for kmalloc
This patch provides fault-injection capability for kmalloc.
Boot option:
failslab=<interval>,<probability>,<space>,<times>
<interval> -- specifies the interval of failures.
<probability> -- specifies how often it should fail in percent.
<space> -- specifies the size of free space where memory can be
allocated safely in bytes.
<times> -- specifies how many times failures may happen at most.
Debugfs:
/debug/failslab/interval
/debug/failslab/probability
/debug/failslab/specifies
/debug/failslab/times
/debug/failslab/ignore-gfp-highmem
/debug/failslab/ignore-gfp-wait
Example:
failslab=10,100,0,-1
slab allocation (kmalloc(), kmem_cache_alloc(),..) fails once per 10 times.
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/fault-injection/fault-injection.txt | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/Documentation/fault-injection/fault-injection.txt b/Documentation/fault-injection/fault-injection.txt index 260ce6c199ce..cf075c20eda0 100644 --- a/Documentation/fault-injection/fault-injection.txt +++ b/Documentation/fault-injection/fault-injection.txt | |||
@@ -86,7 +86,6 @@ configuration of fault-injection capabilities. | |||
86 | specifies the maximum stacktrace depth walked during search | 86 | specifies the maximum stacktrace depth walked during search |
87 | for a caller within [address-start,address-end). | 87 | for a caller within [address-start,address-end). |
88 | 88 | ||
89 | - /debug/failslab/ignore-gfp-highmem: | ||
90 | - /debug/fail_page_alloc/ignore-gfp-highmem: | 89 | - /debug/fail_page_alloc/ignore-gfp-highmem: |
91 | 90 | ||
92 | Format: { 0 | 1 } | 91 | Format: { 0 | 1 } |
@@ -167,7 +166,6 @@ echo 10 > /debug/$FAILNAME/probability | |||
167 | echo 100 > /debug/$FAILNAME/interval | 166 | echo 100 > /debug/$FAILNAME/interval |
168 | echo -1 > /debug/$FAILNAME/times | 167 | echo -1 > /debug/$FAILNAME/times |
169 | echo 2 > /debug/$FAILNAME/verbose | 168 | echo 2 > /debug/$FAILNAME/verbose |
170 | echo 1 > /debug/$FAILNAME/ignore-gfp-highmem | ||
171 | echo 1 > /debug/$FAILNAME/ignore-gfp-wait | 169 | echo 1 > /debug/$FAILNAME/ignore-gfp-wait |
172 | 170 | ||
173 | blacklist() | 171 | blacklist() |