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-rw-r--r--include/sys/zfs_debug.h19
1 files changed, 16 insertions, 3 deletions
diff --git a/include/sys/zfs_debug.h b/include/sys/zfs_debug.h
index 226aaa2b8..7e05c2a35 100644
--- a/include/sys/zfs_debug.h
+++ b/include/sys/zfs_debug.h
@@ -41,6 +41,7 @@ extern "C" {
extern int zfs_flags;
extern int zfs_recover;
extern int zfs_free_leak_on_eio;
+extern int zfs_dbgmsg_enable;
#define ZFS_DEBUG_DPRINTF (1 << 0)
#define ZFS_DEBUG_DBUF_VERIFY (1 << 1)
@@ -55,10 +56,22 @@ extern int zfs_free_leak_on_eio;
extern void __dprintf(const char *file, const char *func,
int line, const char *fmt, ...);
-#define dprintf(...) \
- __dprintf(__FILE__, __func__, __LINE__, __VA_ARGS__)
#define zfs_dbgmsg(...) \
- __dprintf(__FILE__, __func__, __LINE__, __VA_ARGS__)
+ if (zfs_dbgmsg_enable) \
+ __dprintf(__FILE__, __func__, __LINE__, __VA_ARGS__)
+
+#ifdef ZFS_DEBUG
+/*
+ * To enable this:
+ *
+ * $ echo 1 >/sys/module/zfs/parameters/zfs_flags
+ */
+#define dprintf(...) \
+ if (zfs_flags & ZFS_DEBUG_DPRINTF) \
+ __dprintf(__FILE__, __func__, __LINE__, __VA_ARGS__)
+#else
+#define dprintf(...) ((void)0)
+#endif /* ZFS_DEBUG */
extern void zfs_panic_recover(const char *fmt, ...);