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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2007-07-15 23:40:23 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-16 09:05:45 -0700 |
| commit | 54114994f4de7e8076fc250e44501e55e19b75b5 (patch) | |
| tree | b0b0c2b5c3cf1c0daa7c6db7911c42dcf912f181 /Documentation/fault-injection | |
| parent | 203a2935c734c054bfd4665fb5d8835498af50a8 (diff) | |
| download | lwn-54114994f4de7e8076fc250e44501e55e19b75b5.tar.gz lwn-54114994f4de7e8076fc250e44501e55e19b75b5.zip | |
fault-injection: add min-order parameter to fail_page_alloc
Limiting smaller allocation failures by fault injection helps to find real
possible bugs. Because higher order allocations are likely to fail and
zero-order allocations are not likely to fail.
This patch adds min-order parameter to fail_page_alloc. It specifies the
minimum page allocation order to be injected failures.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/fault-injection')
| -rw-r--r-- | Documentation/fault-injection/fault-injection.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/fault-injection/fault-injection.txt b/Documentation/fault-injection/fault-injection.txt index b7ca560b9340..36ece095ff17 100644 --- a/Documentation/fault-injection/fault-injection.txt +++ b/Documentation/fault-injection/fault-injection.txt @@ -103,6 +103,11 @@ configuration of fault-injection capabilities. default is 'N', setting it to 'Y' will inject failures only into non-sleep allocations (GFP_ATOMIC allocations). +- /debug/fail_page_alloc/min-order: + + specifies the minimum page allocation order to be injected + failures. + o Boot option In order to inject faults while debugfs is not available (early boot time), |