[ARM] 4139/1: AACI record support

[linux-2.6-omap-h63xx.git] / lib / fault-inject.c

diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index 5da665ac2d89745b19d8af6d673d55f464a8faa8..b5a90fc056d3406b838cd71632b91985ce62b09e 100644 (file)
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -55,37 +55,7 @@ static bool fail_task(struct fault_attr *attr, struct task_struct *task)
 
 #define MAX_STACK_TRACE_DEPTH 32
 
-#ifdef CONFIG_STACK_UNWIND
-
-static asmlinkage int fail_stacktrace_callback(struct unwind_frame_info *info,
-                                               void *arg)
-{
-       int depth;
-       struct fault_attr *attr = arg;
-       bool found = (attr->require_start == 0 && attr->require_end == ULONG_MAX);
-
-       for (depth = 0; depth < attr->stacktrace_depth
-                       && unwind(info) == 0 && UNW_PC(info); depth++) {
-               if (arch_unw_user_mode(info))
-                       break;
-               if (attr->reject_start <= UNW_PC(info) &&
-                              UNW_PC(info) < attr->reject_end)
-                       return false;
-               if (attr->require_start <= UNW_PC(info) &&
-                              UNW_PC(info) < attr->require_end)
-                       found = true;
-       }
-       return found;
-}
-
-static bool fail_stacktrace(struct fault_attr *attr)
-{
-       struct unwind_frame_info info;
-
-       return unwind_init_running(&info, fail_stacktrace_callback, attr);
-}
-
-#elif defined(CONFIG_STACKTRACE)
+#if defined(CONFIG_STACKTRACE)
 
 static bool fail_stacktrace(struct fault_attr *attr)
 {
@@ -142,9 +112,6 @@ bool should_fail(struct fault_attr *attr, ssize_t size)
        if (attr->task_filter && !fail_task(attr, current))
                return false;
 
-       if (!fail_stacktrace(attr))
-               return false;
-
        if (atomic_read(&attr->times) == 0)
                return false;
 
@@ -159,12 +126,12 @@ bool should_fail(struct fault_attr *attr, ssize_t size)
                        return false;
        }
 
-       if (attr->probability > random32() % 100)
-               goto fail;
+       if (attr->probability <= random32() % 100)
+               return false;
 
-       return false;
+       if (!fail_stacktrace(attr))
+               return false;
 
-fail:
        fail_dump(attr);
 
        if (atomic_read(&attr->times) != -1)