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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2006-12-08 02:39:44 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 08:29:02 -0800 |
| commit | 8a8b6502fb669c3a0638a08955442814cedc86b1 (patch) | |
| tree | 2e49652f904eb821f2fa7ae8cab0dd9b756772d9 /Documentation | |
| parent | 6ff1cb355e628f8fc55fa2d01e269e5e1bbc2fe9 (diff) | |
| download | lwn-8a8b6502fb669c3a0638a08955442814cedc86b1.tar.gz lwn-8a8b6502fb669c3a0638a08955442814cedc86b1.zip | |
[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. specifies the maximum stacktrace depth walked during search for a caller within [address-start,address-end). -- /debug/failslab/ignore-gfp-highmem: - /debug/fail_page_alloc/ignore-gfp-highmem: Format: { 0 | 1 } @@ -167,7 +166,6 @@ echo 10 > /debug/$FAILNAME/probability echo 100 > /debug/$FAILNAME/interval echo -1 > /debug/$FAILNAME/times echo 2 > /debug/$FAILNAME/verbose -echo 1 > /debug/$FAILNAME/ignore-gfp-highmem echo 1 > /debug/$FAILNAME/ignore-gfp-wait blacklist() |