[PATCH] fault injection: process filtering for fault-injection capabilities

This patch provides process filtering feature.
The process filter allows failing only permitted processes
by /proc/<pid>/make-it-fail

Please see the example that demostrates how to inject slab allocation
failures into module init/cleanup code
in Documentation/fault-injection/fault-injection.txt

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>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index f0317edea141..ad9c46071ff8 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1045,6 +1045,9 @@ struct task_struct {
 #ifdef  CONFIG_TASK_DELAY_ACCT
         struct task_delay_info *delays;
 #endif
+#ifdef CONFIG_FAULT_INJECTION
+        int make_it_fail;
+#endif
 };
 
 static inline pid_t process_group(struct task_struct *tsk)