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authorAkinobu Mita <akinobu.mita@gmail.com>2006-12-08 02:39:45 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-08 08:29:02 -0800
commit933e312e73f8fc39652bd4d216a5393cc3a014b9 (patch)
treea2aacc2a098c3c95fe5a94fef1a2cc9751bee79b /block
parent8a8b6502fb669c3a0638a08955442814cedc86b1 (diff)
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[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>
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