Add linux spl debug support

[zfs.git] / module / zfs / include / sys / zfs_debug.h

diff --git a/module/zfs/include/sys/zfs_debug.h b/module/zfs/include/sys/zfs_debug.h
index 450ac1c..f08d7cd 100644 (file)
--- a/module/zfs/include/sys/zfs_debug.h
+++ b/module/zfs/include/sys/zfs_debug.h
@@ -19,15 +19,12 @@
  * CDDL HEADER END
  */
 /*
- * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  */
 
 #ifndef _SYS_ZFS_DEBUG_H
 #define        _SYS_ZFS_DEBUG_H
 
-#pragma ident  "%Z%%M% %I%     %E% SMI"
-
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -57,17 +54,40 @@ extern int zfs_flags;
 #define        ZFS_DEBUG_MODIFY        0x0010
 
 #ifdef ZFS_DEBUG
+#if defined(_KERNEL) && defined(HAVE_SPL)
+/*
+ * Log ZFS debug messages as the spl SS_USER1 subsystem.
+ */
+#include <spl-debug.h>
+
+#ifdef SS_DEBUG_SUBSYS
+#undef SS_DEBUG_SUBSYS
+#endif
+#define SS_DEBUG_SUBSYS SS_USER1
+#define dprintf(...) SDEBUG_LIMIT(SD_DPRINTF, __VA_ARGS__)
+#else
 extern void __dprintf(const char *file, const char *func,
     int line, const char *fmt, ...);
 #define        dprintf(...) \
        if (zfs_flags & ZFS_DEBUG_DPRINTF) \
                __dprintf(__FILE__, __func__, __LINE__, __VA_ARGS__)
+#endif /* _KERNEL && HAVE_SPL */
 #else
 #define        dprintf(...) ((void)0)
 #endif /* ZFS_DEBUG */
 
 extern void zfs_panic_recover(const char *fmt, ...);
 
+typedef struct zfs_dbgmsg {
+       list_node_t zdm_node;
+       time_t zdm_timestamp;
+       char zdm_msg[1]; /* variable length allocation */
+} zfs_dbgmsg_t;
+
+extern void zfs_dbgmsg_init(void);
+extern void zfs_dbgmsg_fini(void);
+extern void zfs_dbgmsg(const char *fmt, ...);
+
 #ifdef __cplusplus
 }
 #endif