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authorAkinobu Mita <akinobu.mita@gmail.com>2006-12-08 05:39:44 -0500
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-08 11:29:02 -0500
commit8a8b6502fb669c3a0638a08955442814cedc86b1 (patch)
tree2e49652f904eb821f2fa7ae8cab0dd9b756772d9 /lib/Kconfig.debug
parent6ff1cb355e628f8fc55fa2d01e269e5e1bbc2fe9 (diff)
[PATCH] fault-injection capability for kmalloc
This patch provides fault-injection capability for kmalloc. Boot option: failslab=<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 bytes. <times> -- specifies how many times failures may happen at most. Debugfs: /debug/failslab/interval /debug/failslab/probability /debug/failslab/specifies /debug/failslab/times /debug/failslab/ignore-gfp-highmem /debug/failslab/ignore-gfp-wait Example: failslab=10,100,0,-1 slab allocation (kmalloc(), kmem_cache_alloc(),..) fails once per 10 times. Cc: Pekka Enberg <penberg@cs.helsinki.fi> 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 'lib/Kconfig.debug')
-rw-r--r--lib/Kconfig.debug7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 35228b3e7e92..c7f567a57d7d 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -417,6 +417,13 @@ config LKDTM
417config FAULT_INJECTION 417config FAULT_INJECTION
418 bool 418 bool
419 419
420config FAILSLAB
421 bool "Fault-injection capabilitiy for kmalloc"
422 depends on DEBUG_KERNEL
423 select FAULT_INJECTION
424 help
425 This option provides fault-injection capabilitiy for kmalloc.
426
420config FAULT_INJECTION_DEBUG_FS 427config FAULT_INJECTION_DEBUG_FS
421 bool "Debugfs entries for fault-injection capabilities" 428 bool "Debugfs entries for fault-injection capabilities"
422 depends on FAULT_INJECTION && SYSFS 429 depends on FAULT_INJECTION && SYSFS