9709 Remove support for BZIP2 from dump
Reviewed by: Sanjay Nadkarni <sanjay.nadkarni@nexenta.com>
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>

@@ -18,10 +18,11 @@
  *
  * CDDL HEADER END
  */
 /*
  * Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2018 Nexenta Systems, Inc. All rights reserved.
  * Copyright (c) 2016 by Delphix. All rights reserved.
  */
 
 #ifndef _SYS_DUMPHDR_H
 #define _SYS_DUMPHDR_H

@@ -162,12 +163,12 @@
 } dumpdatahdr_t;
 
 #define DUMP_DATAHDR_MAGIC      ('d' << 24 | 'h' << 16 | 'd' << 8 | 'r')
 
 #define DUMP_DATAHDR_VERSION    1
+#define DUMP_CLEVEL_SERIAL      0       /* single-threaded lzjb compression */
 #define DUMP_CLEVEL_LZJB        1       /* parallel lzjb compression */
-#define DUMP_CLEVEL_BZIP2       2       /* parallel bzip2 level 1 */
 
 #ifdef _KERNEL
 
 extern kmutex_t dump_lock;
 extern struct vnode *dumpvp;

@@ -197,29 +198,10 @@
 extern int dump_plat_data(void *);
 extern int dump_set_uuid(const char *);
 extern const char *dump_get_uuid(void);
 
 /*
- * Define a CPU count threshold that determines when to employ
- * bzip2. This value is defined per-platform.
- */
-extern uint_t dump_plat_mincpu_default;
-
-#define DUMP_PLAT_SUN4U_MINCPU          0
-#define DUMP_PLAT_SUN4U_OPL_MINCPU      0
-#define DUMP_PLAT_SUN4V_MINCPU          0
-#define DUMP_PLAT_X86_64_MINCPU         0
-#define DUMP_PLAT_X86_32_MINCPU         0
-
-/*
- * Override the per-platform default by setting this variable with
- * /etc/system.  The value 0 disables parallelism, and the old format
- * dump is produced.
- */
-extern uint_t dump_plat_mincpu;
-
-/*
  * Pages may be stolen at dump time. Prevent the pages from ever being
  * allocated while dump is running.
  */
 #define IS_DUMP_PAGE(pp) (dump_check_used && dump_test_used((pp)->p_pagenum))