X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=libcfs%2Finclude%2Flibcfs%2Flibcfs_fail.h;h=d3651f8e88b2240c69c25bb14136645370dfa359;hb=1658ae30a0e97e7f4018d8cba67e459078470d1a;hp=5edd20df130638ee61e0744331b09fdd126adfc9;hpb=a5b81807c5d6d2cb3b2ef1a0a7e150ee6002f7f7;p=fs%2Flustre-release.git

diff --git a/libcfs/include/libcfs/libcfs_fail.h b/libcfs/include/libcfs/libcfs_fail.h
index 5edd20d..d3651f8 100644
--- a/libcfs/include/libcfs/libcfs_fail.h
+++ b/libcfs/include/libcfs/libcfs_fail.h
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -18,15 +16,13 @@
  * You should have received a copy of the GNU General Public License
  * version 2 along with this program; If not, see http://www.gnu.org/licenses
  *
- * Please contact Oracle Corporation, Inc., 500 Oracle Parkway, Redwood Shores,
- * CA 94065 USA or visit www.oracle.com if you need additional information or
- * have any questions.
- *
  * GPL HEADER END
  */
 /*
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2014, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
@@ -38,8 +34,9 @@
 
 extern unsigned long cfs_fail_loc;
 extern unsigned int cfs_fail_val;
+extern int cfs_fail_err;
 
-extern cfs_waitq_t cfs_race_waitq;
+extern wait_queue_head_t cfs_race_waitq;
 extern int cfs_race_state;
 
 int __cfs_fail_check_set(__u32 id, __u32 value, int set);
@@ -48,9 +45,14 @@ int __cfs_fail_timeout_set(__u32 id, __u32 value, int ms, int set);
 enum {
         CFS_FAIL_LOC_NOSET      = 0,
         CFS_FAIL_LOC_ORSET      = 1,
-        CFS_FAIL_LOC_RESET      = 2
+        CFS_FAIL_LOC_RESET      = 2,
+        CFS_FAIL_LOC_VALUE      = 3
 };
 
+/* Failure ranges
+	"0x0100 - 0x3fff" for Lustre
+	"0xe000 - 0xefff" for LNet
+	"0xf000 - 0xffff" for LNDs */
 /* Failure injection control */
 #define CFS_FAIL_MASK_SYS    0x0000FF00
 #define CFS_FAIL_MASK_LOC   (0x000000FF | CFS_FAIL_MASK_SYS)
@@ -69,33 +71,61 @@ enum {
 #define CFS_FAIL_RAND        0x08000000 /* fail 1/N of the times */
 #define CFS_FAIL_USR1        0x04000000 /* user flag */
 
-#define CFS_FAIL_PRECHECK(id) (cfs_fail_loc &&                                \
-                              (cfs_fail_loc & CFS_FAIL_MASK_LOC) ==           \
-                              ((id) & CFS_FAIL_MASK_LOC))
+/* CFS_FAULT may be combined with any one of the above flags. */
+#define CFS_FAULT	     0x02000000 /* match any CFS_FAULT_CHECK */
+
+static inline bool CFS_FAIL_PRECHECK(__u32 id)
+{
+	return cfs_fail_loc != 0 &&
+	      ((cfs_fail_loc & CFS_FAIL_MASK_LOC) == (id & CFS_FAIL_MASK_LOC) ||
+	       (cfs_fail_loc & id & CFS_FAULT));
+}
 
-static inline int cfs_fail_check_set(__u32 id, __u32 value, int set)
+static inline int cfs_fail_check_set(__u32 id, __u32 value,
+				     int set, int quiet)
 {
-        int ret = 0;
-        if (unlikely(CFS_FAIL_PRECHECK(id) &&
-            (ret = __cfs_fail_check_set(id, value, set)))) {
-                CERROR("*** cfs_fail_loc=%x ***\n", id);
-        }
-        return ret;
+	int ret = 0;
+
+	if (unlikely(CFS_FAIL_PRECHECK(id) &&
+		     (ret = __cfs_fail_check_set(id, value, set)))) {
+		if (quiet) {
+			CDEBUG(D_INFO, "*** cfs_fail_loc=%x, val=%u***\n",
+			       id, value);
+		} else {
+			LCONSOLE_INFO("*** cfs_fail_loc=%x, val=%u***\n",
+				      id, value);
+		}
+	}
+
+	return ret;
 }
 
 /* If id hit cfs_fail_loc, return 1, otherwise return 0 */
 #define CFS_FAIL_CHECK(id) \
-        cfs_fail_check_set(id, 0, CFS_FAIL_LOC_NOSET)
+	cfs_fail_check_set(id, 0, CFS_FAIL_LOC_NOSET, 0)
+#define CFS_FAIL_CHECK_QUIET(id) \
+	cfs_fail_check_set(id, 0, CFS_FAIL_LOC_NOSET, 1)
+
+/* If id hit cfs_fail_loc and cfs_fail_val == (-1 or value) return 1,
+ * otherwise return 0 */
+#define CFS_FAIL_CHECK_VALUE(id, value) \
+	cfs_fail_check_set(id, value, CFS_FAIL_LOC_VALUE, 0)
+#define CFS_FAIL_CHECK_VALUE_QUIET(id, value) \
+	cfs_fail_check_set(id, value, CFS_FAIL_LOC_VALUE, 1)
 
 /* If id hit cfs_fail_loc, cfs_fail_loc |= value and return 1,
  * otherwise return 0 */
 #define CFS_FAIL_CHECK_ORSET(id, value) \
-        cfs_fail_check_set(id, value, CFS_FAIL_LOC_ORSET)
+	cfs_fail_check_set(id, value, CFS_FAIL_LOC_ORSET, 0)
+#define CFS_FAIL_CHECK_ORSET_QUIET(id, value) \
+	cfs_fail_check_set(id, value, CFS_FAIL_LOC_ORSET, 1)
 
 /* If id hit cfs_fail_loc, cfs_fail_loc = value and return 1,
  * otherwise return 0 */
 #define CFS_FAIL_CHECK_RESET(id, value) \
-        cfs_fail_check_set(id, value, CFS_FAIL_LOC_RESET)
+	cfs_fail_check_set(id, value, CFS_FAIL_LOC_RESET, 0)
+#define CFS_FAIL_CHECK_RESET_QUIET(id, value) \
+	cfs_fail_check_set(id, value, CFS_FAIL_LOC_RESET, 1)
 
 static inline int cfs_fail_timeout_set(__u32 id, __u32 value, int ms, int set)
 {
@@ -107,7 +137,7 @@ static inline int cfs_fail_timeout_set(__u32 id, __u32 value, int ms, int set)
 
 /* If id hit cfs_fail_loc, sleep for seconds or milliseconds */
 #define CFS_FAIL_TIMEOUT(id, secs) \
-        cfs_fail_timeout_set(id, 0, secs * 1000, CFS_FAIL_LOC_NOSET)
+        cfs_fail_timeout_set(id, 0, (secs) * 1000, CFS_FAIL_LOC_NOSET)
 
 #define CFS_FAIL_TIMEOUT_MS(id, ms) \
         cfs_fail_timeout_set(id, 0, ms, CFS_FAIL_LOC_NOSET)
@@ -115,38 +145,38 @@ static inline int cfs_fail_timeout_set(__u32 id, __u32 value, int ms, int set)
 /* If id hit cfs_fail_loc, cfs_fail_loc |= value and
  * sleep seconds or milliseconds */
 #define CFS_FAIL_TIMEOUT_ORSET(id, value, secs) \
-        cfs_fail_timeout_set(id, value, secs * 1000, CFS_FAIL_LOC_ORSET)
+        cfs_fail_timeout_set(id, value, (secs) * 1000, CFS_FAIL_LOC_ORSET)
+
+#define CFS_FAIL_TIMEOUT_RESET(id, value, secs) \
+	cfs_fail_timeout_set(id, value, secs * 1000, CFS_FAIL_LOC_RESET)
 
 #define CFS_FAIL_TIMEOUT_MS_ORSET(id, value, ms) \
         cfs_fail_timeout_set(id, value, ms, CFS_FAIL_LOC_ORSET)
 
-#ifdef __KERNEL__
+#define CFS_FAULT_CHECK(id)			\
+	CFS_FAIL_CHECK(CFS_FAULT | (id))
+
 /* The idea here is to synchronise two threads to force a race. The
  * first thread that calls this with a matching fail_loc is put to
  * sleep. The next thread that calls with the same fail_loc wakes up
  * the first and continues. */
 static inline void cfs_race(__u32 id)
 {
-
-        if (CFS_FAIL_PRECHECK(id)) {
-                if (unlikely(__cfs_fail_check_set(id, 0, CFS_FAIL_LOC_NOSET))) {
-                        int rc;
-                        cfs_race_state = 0;
-                        CERROR("cfs_race id %x sleeping\n", id);
-                        cfs_wait_event_interruptible(cfs_race_waitq,
-                                                     cfs_race_state != 0, rc);
-                        CERROR("cfs_fail_race id %x awake, rc=%d\n", id, rc);
-                } else {
-                        CERROR("cfs_fail_race id %x waking\n", id);
-                        cfs_race_state = 1;
-                        cfs_waitq_signal(&cfs_race_waitq);
-                }
-        }
+	if (CFS_FAIL_PRECHECK(id)) {
+		if (unlikely(__cfs_fail_check_set(id, 0, CFS_FAIL_LOC_NOSET))) {
+			int rc;
+			cfs_race_state = 0;
+			CERROR("cfs_race id %x sleeping\n", id);
+			rc = wait_event_interruptible(cfs_race_waitq,
+						      cfs_race_state != 0);
+			CERROR("cfs_fail_race id %x awake, rc=%d\n", id, rc);
+		} else {
+			CERROR("cfs_fail_race id %x waking\n", id);
+			cfs_race_state = 1;
+			wake_up(&cfs_race_waitq);
+		}
+	}
 }
 #define CFS_RACE(id) cfs_race(id)
-#else
-/* sigh.  an expedient fix until CFS_RACE is fixed up */
-#define CFS_RACE(foo) do {} while(0)
-#endif
 
 #endif /* _LIBCFS_FAIL_H */