From 8a8b6502fb669c3a0638a08955442814cedc86b1 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Fri, 8 Dec 2006 02:39:44 -0800 Subject: [PATCH] fault-injection capability for kmalloc This patch provides fault-injection capability for kmalloc. Boot option: failslab=,,, -- specifies the interval of failures. -- specifies how often it should fail in percent. -- specifies the size of free space where memory can be allocated safely in bytes. -- 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 Signed-off-by: Akinobu Mita Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/Kconfig.debug | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'lib/Kconfig.debug') 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 config FAULT_INJECTION bool +config FAILSLAB + bool "Fault-injection capabilitiy for kmalloc" + depends on DEBUG_KERNEL + select FAULT_INJECTION + help + This option provides fault-injection capabilitiy for kmalloc. + config FAULT_INJECTION_DEBUG_FS bool "Debugfs entries for fault-injection capabilities" depends on FAULT_INJECTION && SYSFS -- cgit v1.2.3