Add linux spl debug support

Use spl debug if HAVE_SPL defined

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>

diff --git a/module/zfs/include/sys/zfs_debug.h b/module/zfs/include/sys/zfs_debug.h
index 50ecf9b3624915c4b3f087588113f34d0bb3002b..f08d7cd2bc8e79e476a1f15a93ec0237c6bfa02f 100644 (file)
--- a/module/zfs/include/sys/zfs_debug.h
+++ b/module/zfs/include/sys/zfs_debug.h
@@ -54,11 +54,24 @@ 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 */