X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2Ffault-inject.c;h=f1cdeb024d172a488e1ed44f70ce1e090ee5e541;hb=ac88ee3b6cbac80c32556a39fe16c4bbc55fcbc5;hp=d7d501ea856d743bef7acb9451d949bde1ed496d;hpb=8b8a7df9a1d87ba413fce246b11f54c636bb456a;p=firefly-linux-kernel-4.4.55.git

diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index d7d501ea856d..f1cdeb024d17 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -40,10 +40,16 @@ EXPORT_SYMBOL_GPL(setup_fault_attr);
 
 static void fail_dump(struct fault_attr *attr)
 {
-	if (attr->verbose > 0)
-		printk(KERN_NOTICE "FAULT_INJECTION: forcing a failure\n");
-	if (attr->verbose > 1)
-		dump_stack();
+	if (attr->verbose > 0 && __ratelimit(&attr->ratelimit_state)) {
+		printk(KERN_NOTICE "FAULT_INJECTION: forcing a failure.\n"
+		       "name %pd, interval %lu, probability %lu, "
+		       "space %d, times %d\n", attr->dname,
+		       attr->probability, attr->interval,
+		       atomic_read(&attr->space),
+		       atomic_read(&attr->times));
+		if (attr->verbose > 1)
+			dump_stack();
+	}
 }
 
 #define atomic_dec_not_zero(v)		atomic_add_unless((v), -1, 0)
@@ -202,6 +208,12 @@ struct dentry *fault_create_debugfs_attr(const char *name,
 		goto fail;
 	if (!debugfs_create_ul("verbose", mode, dir, &attr->verbose))
 		goto fail;
+	if (!debugfs_create_u32("verbose_ratelimit_interval_ms", mode, dir,
+				&attr->ratelimit_state.interval))
+		goto fail;
+	if (!debugfs_create_u32("verbose_ratelimit_burst", mode, dir,
+				&attr->ratelimit_state.burst))
+		goto fail;
 	if (!debugfs_create_bool("task-filter", mode, dir, &attr->task_filter))
 		goto fail;
 
@@ -222,6 +234,7 @@ struct dentry *fault_create_debugfs_attr(const char *name,
 
 #endif /* CONFIG_FAULT_INJECTION_STACKTRACE_FILTER */
 
+	attr->dname = dget(dir);
 	return dir;
 fail:
 	debugfs_remove_recursive(dir);