path: root/Documentation/fault-injection
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authorAkinobu Mita <akinobu.mita@gmail.com>2007-07-16 06:40:23 (GMT)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 16:05:45 (GMT)
commit54114994f4de7e8076fc250e44501e55e19b75b5 (patch)
treeb0b0c2b5c3cf1c0daa7c6db7911c42dcf912f181 /Documentation/fault-injection
parent203a2935c734c054bfd4665fb5d8835498af50a8 (diff)
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')
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/fault-injection/fault-injection.txt b/Documentation/fault-injection/fault-injection.txt
index b7ca560..36ece09 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),

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