move ROUNDUP() and related macros to portfns.h to fit cpu kernels.

Reference: /n/atom/patch/applied2013/fsroundup
Date: Mon Aug 26 03:59:45 CES 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/src/fs/ip/il.c	Mon Aug 26 03:58:39 2013
+++ /sys/src/fs/ip/il.c	Mon Aug 26 03:58:40 2013
@@ -1002,9 +1002,6 @@
 	return x;
 }
 
-#define	HOWMANY(x, y)	(((x)+((y)-1))/(y))
-#define ROUNDUP(x, y)	(HOWMANY((x), (y))*(y))
-
 static void
 ilgoaway(Msgbuf *inmb, Ifc *ifc)
 {
--- /sys/src/fs/port/portfns.h	Mon Aug 26 03:58:41 2013
+++ /sys/src/fs/port/portfns.h	Mon Aug 26 03:58:42 2013
@@ -300,3 +300,11 @@
 vlong	strtoll(char *, char **, int);
 uvlong	strtoull(char *, char **, int);
 ulong	strtoul(char*, char**, int);
+
+#define NEXT(x, l)	(((x)+1)%(l))
+#define PREV(x, l)	(((x) == 0) ? (l)-1: (x)-1)
+#define	HOWMANY(x, y)	(((x)+((y)-1))/(y))
+#define ROUNDUP(x, y)	(HOWMANY((x), (y))*(y))
+#define ROUNDDN(x, y)	(((x)/(y))*(y))
+
+#pragma	varargck	argpos	panic		1
--- /sys/src/fs/port/chk.c	Mon Aug 26 03:58:44 2013
+++ /sys/src/fs/port/chk.c	Mon Aug 26 03:58:45 2013
@@ -1,10 +1,6 @@
 #include	"all.h"
 
-/* copied from ../pc/etherif.h; should probably be in all.h */
-#define	HOWMANY(x, y)	(((x)+((y)-1))/(y))
-#define ROUNDUP(x, y)	(HOWMANY((x), (y))*(y))
-
-/* augmented Dentry */
+//* augmented Dentry */
 typedef struct {
 	Dentry	*d;
 	Off	qpath;
--- /sys/src/fs/pc/ata.c	Mon Aug 26 03:58:47 2013
+++ /sys/src/fs/pc/ata.c	Mon Aug 26 03:58:49 2013
@@ -14,10 +14,6 @@
 #define	dprint(...)	// print(__VA_ARGS__)
 #define idprint(...)	// print(__VA_ARGS__)
 
-
-#define	HOWMANY(x, y)	(((x)+((y)-1))/(y))
-#define ROUNDUP(x, y)	(HOWMANY((x), (y))*(y))
-
 enum{
 	IrqATA0	= 14,
 	IrqATA1	= 15,
--- /sys/src/fs/pc/sdata.c	Mon Aug 26 03:58:53 2013
+++ /sys/src/fs/pc/sdata.c	Mon Aug 26 03:58:55 2013
@@ -23,10 +23,6 @@
 #define	dprint(...)	// print(__VA_ARGS__)
 #define idprint(...)	// print(__VA_ARGS__)
 
-
-#define	HOWMANY(x, y)	(((x)+((y)-1))/(y))
-#define ROUNDUP(x, y)	(HOWMANY((x), (y))*(y))
-
 enum {
 	/* old stuff carried forward */
 	NCtlr=		8,
--- /sys/src/fs/pc/etherif.h	Mon Aug 26 03:58:56 2013
+++ /sys/src/fs/pc/etherif.h	Mon Aug 26 03:58:57 2013
@@ -34,11 +34,6 @@
 	int	(*reset)(Ether*);
 };
 
-#define NEXT(x, l)	(((x)+1)%(l))
-#define PREV(x, l)	(((x) == 0) ? (l)-1: (x)-1)
-#define	HOWMANY(x, y)	(((x)+((y)-1))/(y))
-#define ROUNDUP(x, y)	(HOWMANY((x), (y))*(y))
-
 extern	Etherctlr	etherctlr[];
 extern	int	netherctlr;
 extern	Ether	etherif[MaxEther];
--- /sys/src/fs/pc/malloc.c	Mon Aug 26 03:58:58 2013
+++ /sys/src/fs/pc/malloc.c	Mon Aug 26 03:58:58 2013
@@ -54,7 +54,7 @@
 	iunlock(&mconf);
 
 	prbanks();
-	panic("ialloc(%ld, %ld): out of memory: %#p\n", n, align, getcallerpc(&n));
+	panic("ialloc(%ld, %d): out of memory: %#p\n", n, align, getcallerpc(&n));
 	return 0;
 }
 
--- /sys/src/fs/pc/mmu.c	Mon Aug 26 03:58:59 2013
+++ /sys/src/fs/pc/mmu.c	Mon Aug 26 03:59:00 2013
@@ -74,7 +74,6 @@
 				 * containing kernel mappings  */
 static ulong	*kpt;		/* 2nd level page tables for kernel mem */
 
-#define ROUNDUP(s,v)	(((s)+(v-1))&~(v-1))
 /*
  *  offset of virtual address into
  *  top level page table