[XFS] Fix ktrace code - dont build unilaterally, and do earlier init for pagebuf use.

SGI Modid: 2.5.x-xfs:slinx:160172a

fs/xfs/Makefile

@@ -131,12 +131,13 @@ xfs-y				+= $(addprefix linux/, \
 # Objects in support/
 xfs-y				+= $(addprefix support/, \
 				   debug.o \
-				   ktrace.o \
 				   move.o \
 				   mrlock.o \
 				   qsort.o \
 				   uuid.o)
 
+xfs-$(CONFIG_XFS_TRACE)		+= support/ktrace.o
+
 # Quota and DMAPI stubs
 xfs-y				+= xfs_dmops.o \
 				   xfs_qmops.o

fs/xfs/linux/xfs_super.c

@@ -869,6 +869,8 @@ init_xfs_fs( void )
 	si_meminfo(&si);
 	xfs_physmem = si.totalram;
 
+	ktrace_init(64);
+
 	error = init_inodecache();
 	if (error < 0)
 		goto undo_inodecache;
@@ -907,6 +909,7 @@ exit_xfs_fs( void )
 	vfs_exitdmapi();
 	pagebuf_terminate();
 	destroy_inodecache();
+	ktrace_uninit();
 }
 
 module_init(init_xfs_fs);

fs/xfs/support/ktrace.c

 /*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License as
@@ -40,8 +40,6 @@
 #include "debug.h"
 #include "ktrace.h"
 
-#if	(defined(DEBUG) || defined(CONFIG_XFS_VNODE_TRACING))
-
 static kmem_zone_t *ktrace_hdr_zone;
 static kmem_zone_t *ktrace_ent_zone;
 static int          ktrace_zentries;
@@ -121,7 +119,6 @@ ktrace_alloc(int nentries, int sleep)
 	ktp->kt_nentries = nentries;
 	ktp->kt_index    = 0;
 	ktp->kt_rollover = 0;
-
 	return ktp;
 }
 
@@ -235,7 +232,6 @@ ktrace_nentries(
 	return (ktp->kt_rollover ? ktp->kt_nentries : ktp->kt_index);
 }
 
-
 /*
  * ktrace_first()
  *
@@ -276,7 +272,7 @@ ktrace_first(ktrace_t   *ktp, ktrace_snap_t     *ktsp)
 	}
 	return ktep;
 }
-
+EXPORT_SYMBOL(ktrace_first);
 
 /*
  * ktrace_next()
@@ -311,11 +307,7 @@ ktrace_next(
 
 	return ktep;
 }
-
-#if	(defined(DEBUG) || defined(CONFIG_XFS_VNODE_TRACING))
-EXPORT_SYMBOL(ktrace_first);
 EXPORT_SYMBOL(ktrace_next);
-#endif
 
 /*
  * ktrace_skip()
@@ -323,7 +315,6 @@ EXPORT_SYMBOL(ktrace_next);
  * Skip the next "count" entries and return the entry after that.
  * Return NULL if this causes us to iterate past the beginning again.
  */
-
 ktrace_entry_t *
 ktrace_skip(
 	ktrace_t        *ktp,
@@ -362,18 +353,3 @@ ktrace_skip(
 	}
 	return ktep;
 }
-
-#else
-
-ktrace_t *
-ktrace_alloc(int nentries, int sleep)
-{
-	/*
-	 * KM_SLEEP callers don't expect failure.
-	 */
-	if (sleep & KM_SLEEP)
-		panic("ktrace_alloc: NULL memory on KM_SLEEP request!");
-
-	return NULL;
-}
-#endif

fs/xfs/support/ktrace.h

 /*
- * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
+ * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of version 2 of the GNU General Public License as
@@ -32,6 +32,7 @@
 #ifndef __XFS_SUPPORT_KTRACE_H__
 #define __XFS_SUPPORT_KTRACE_H__
 
+#include <support/spin.h>
 
 /*
  * Trace buffer entry structure.
@@ -59,16 +60,13 @@ typedef struct ktrace_snap {
 	int		ks_index;	/* current index */
 } ktrace_snap_t;
 
-/*
- * Exported interfaces.
- */
-extern ktrace_t *ktrace_alloc(int, int);
 
-#if	(defined(DEBUG) || defined(CONFIG_XFS_VNODE_TRACING))
+#ifdef CONFIG_XFS_TRACE
 
 extern void ktrace_init(int zentries);
 extern void ktrace_uninit(void);
 
+extern ktrace_t *ktrace_alloc(int, int);
 extern void ktrace_free(ktrace_t *);
 
 extern void ktrace_enter(
@@ -96,10 +94,8 @@ extern ktrace_entry_t   *ktrace_next(ktrace_t *, ktrace_snap_t *);
 extern ktrace_entry_t   *ktrace_skip(ktrace_t *, int, ktrace_snap_t *);
 
 #else
-
-#define	ktrace_free(ktp)
-#define	ktrace_enter(ktp,v0,v1,v2,v3,v4,v5,v6,v7,v8,v9,v10,v11,v12,v13,v14,v15)
-
-#endif
+#define ktrace_init(x)	do { } while (0)
+#define ktrace_uninit()	do { } while (0)
+#endif	/* CONFIG_XFS_TRACE */
 
 #endif	/* __XFS_SUPPORT_KTRACE_H__ */

fs/xfs/xfs_vfsops.c

@@ -132,14 +132,6 @@ xfs_init(void)
 					    "xfs_chashlist");
 	_ACL_ZONE_INIT(xfs_acl_zone, "xfs_acl");
 
-#ifdef CONFIG_XFS_VNODE_TRACING
-	ktrace_init(VNODE_TRACE_SIZE);
-#else
-#ifdef DEBUG
-	ktrace_init(64);
-#endif
-#endif
-
 	/*
 	 * Allocate global trace buffers.
 	 */
@@ -203,9 +195,6 @@ xfs_cleanup(void)
 	kmem_cache_destroy(xfs_ili_zone);
 	kmem_cache_destroy(xfs_chashlist_zone);
 	_ACL_ZONE_DESTROY(xfs_acl_zone);
-#if  (defined(DEBUG) || defined(CONFIG_XFS_VNODE_TRACING))
-	ktrace_uninit();
-#endif
 }
 
 /*