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| author | Akinobu Mita <akinobu.mita@gmail.com> | 2006-12-08 11:39:42 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-08 17:29:02 +0100 |
| commit | de1ba09b214056365d9082982905b255caafb7a2 (patch) | |
| tree | 6806f2abcfb9eee699424112a48c44edbbdff0c2 /mm/readahead.c | |
| parent | [PATCH] nfsd: replace kmalloc+memset with kcalloc + simplify NULL check (diff) | |
| download | linux-de1ba09b214056365d9082982905b255caafb7a2.tar.xz linux-de1ba09b214056365d9082982905b255caafb7a2.zip | |
[PATCH] fault injection: documentation and scripts
This patch set provides some fault-injection capabilities.
- kmalloc() failures
- alloc_pages() failures
- disk IO errors
We can see what really happens if those failures happen.
In order to enable these fault-injection capabilities:
1. Enable relevant config options (CONFIG_FAILSLAB, CONFIG_PAGE_ALLOC,
CONFIG_MAKE_REQUEST) and if you want to configure them via debugfs,
enable CONFIG_FAULT_INJECTION_DEBUG_FS.
2. Build and boot with this kernel
3. Configure fault-injection capabilities behavior by boot option or debugfs
- Boot option
failslab=
fail_page_alloc=
fail_make_request=
- Debugfs
/debug/failslab/*
/debug/fail_page_alloc/*
/debug/fail_make_request/*
Please refer to the Documentation/fault-injection/fault-injection.txt
for details.
4. See what really happens.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Don Mullis <dwm@meer.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/readahead.c')
0 files changed, 0 insertions, 0 deletions