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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2006-12-08 05:39:45 -0500 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 11:29:02 -0500 |
| commit | 933e312e73f8fc39652bd4d216a5393cc3a014b9 (patch) | |
| tree | a2aacc2a098c3c95fe5a94fef1a2cc9751bee79b /block/ll_rw_blk.c | |
| parent | 8a8b6502fb669c3a0638a08955442814cedc86b1 (diff) | |
[PATCH] fault-injection capability for alloc_pages()
This patch provides fault-injection capability for alloc_pages()
Boot option:
fail_page_alloc=<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 pages.
<times> -- specifies how many times failures may happen at most.
Debugfs:
/debug/fail_page_alloc/interval
/debug/fail_page_alloc/probability
/debug/fail_page_alloc/specifies
/debug/fail_page_alloc/times
/debug/fail_page_alloc/ignore-gfp-highmem
/debug/fail_page_alloc/ignore-gfp-wait
Example:
fail_page_alloc=10,100,0,-1
The page allocation (alloc_pages(), ...) fails once per 10 times.
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 'block/ll_rw_blk.c')
0 files changed, 0 insertions, 0 deletions