Added pagein' and pageout'.

1998-08-01  Martin Baulig  <martin@home-of-linux.org>

	* include/glibtop/swap.h (glibtop_swap): Added `pagein' and `pageout'.

	* kernel/table20/table.h: Removed.
	* kernel/table21/table.h: Removed.
	* kernel/table.h: Added. Things are now binary compatible between
	both kernel versions.

ChangeLog

@@ -1,3 +1,12 @@
+1998-08-01  Martin Baulig  <martin@home-of-linux.org>
+
+	* include/glibtop/swap.h (glibtop_swap): Added `pagein' and `pageout'.
+
+	* kernel/table20/table.h: Removed.
+	* kernel/table21/table.h: Removed.
+	* kernel/table.h: Added. Things are now binary compatible between
+	both kernel versions.
+
 1998-07-30  Martin Baulig  <martin@home-of-linux.org>
 
 	* acconfig.h (u_int64_t, int64_t): Added.

examples/first.c

@@ -86,8 +86,9 @@ main (int argc, char *argv [])
 	for (c = 0; c < PROFILE_COUNT; c++)
 		glibtop_get_swap (&data.swap);
 
-	printf ("Swap         (0x%08Lx): %Lu, %Lu, %Lu\n", data.swap.flags,
+	printf ("Swap         (0x%08Lx): %Lu, %Lu, %Lu, %Lu, %Lu\n",
-		data.swap.total, data.swap.used, data.swap.free);
+		data.swap.flags, data.swap.total, data.swap.used,
+		data.swap.free, data.swap.pagein, data.swap.pageout);
 
 	for (c = 0; c < PROFILE_COUNT; c++)
 		glibtop_get_uptime (&data.uptime);

features.def

@@ -1,6 +1,6 @@
 void|cpu|ulong(total,user,nice,sys,idle,frequency)
 void|mem|ulong(total,used,free,shared,buffer,cached,user,locked)
-void|swap|ulong(total,used,free)
+void|swap|ulong(total,used,free,pagein,pageout)
 void|uptime|double(uptime,idletime)
 void|loadavg|double(loadavg[0],loadavg[1],loadavg[2])
 void|shm_limits|ulong(shmmax,shmmin,shmmni,shmseg,shmall)

include/glibtop/swap.h

@@ -30,8 +30,10 @@ __BEGIN_DECLS
 #define GLIBTOP_SWAP_TOTAL	0
 #define GLIBTOP_SWAP_USED	1
 #define GLIBTOP_SWAP_FREE	2
+#define GLIBTOP_SWAP_PAGEIN	3
+#define GLIBTOP_SWAP_PAGEOUT	4
 
-#define GLIBTOP_MAX_SWAP	3
+#define GLIBTOP_MAX_SWAP	5
 
 typedef struct _glibtop_swap	glibtop_swap;
 
@@ -40,7 +42,9 @@ struct _glibtop_swap
 	u_int64_t	flags,
 		total,		/* GLIBTOP_SWAP_TOTAL	*/
 		used,		/* GLIBTOP_SWAP_USED	*/
-		free;		/* GLIBTOP_SWAP_FREE	*/
+		free,		/* GLIBTOP_SWAP_FREE	*/
+		pagein,		/* GLIBTOP_SWAP_PAGEIN	*/
+		pageout;	/* GLIBTOP_SWAP_PAGEOUT	*/
 };
 
 #define glibtop_get_swap(swap)	glibtop_get_swap_l(glibtop_global_server, swap)

kernel/table.h

@@ -53,6 +53,8 @@ struct table_swap
 	unsigned long total;		/* Total swap space		*/
 	unsigned long used;		/* Used swap space		*/
 	unsigned long free;		/* Free swap space		*/
+	unsigned long pagein;		/* Total # of pages swapped in	*/
+	unsigned long pageout;		/* Total # of pages swapped out	*/
 };
 
 /* Load average */

kernel/table20/kernel.patch

@@ -28,14 +28,16 @@ diff -ur linux-2.0.32/Makefile linux-hacked/Makefile
 diff -ur linux-2.0.32/arch/i386/kernel/entry.S linux-hacked/arch/i386/kernel/entry.S
 --- linux-2.0.32/arch/i386/kernel/entry.S	Tue Sep 16 23:42:45 1997
 +++ linux-hacked/arch/i386/kernel/entry.S	Thu Jun 11 21:37:20 1998
-@@ -699,4 +699,6 @@
+@@ -699,4 +699,8 @@
  	.long SYMBOL_NAME(sys_mremap)
  	.long 0,0
  	.long SYMBOL_NAME(sys_vm86)
 -	.space (NR_syscalls-166)*4
-+	.long 0
++	.long 0,0,0,0					/* 170 */
++	.long 0,0,0,0,0,0,0,0,0,0			/* 180 */
++	.long 0,0,0,0,0,0,0
 +	.long SYMBOL_NAME(sys_table)
-+	.space (NR_syscalls-168)*4
++	.space (NR_syscalls-188)*4
 diff -ur linux-2.0.32/include/asm-i386/unistd.h linux-hacked/include/asm-i386/unistd.h
 --- linux-2.0.32/include/asm-i386/unistd.h	Fri Mar 22 07:34:02 1996
 +++ linux-hacked/include/asm-i386/unistd.h	Thu Jun 11 21:37:03 1998
@@ -43,7 +45,7 @@ diff -ur linux-2.0.32/include/asm-i386/unistd.h linux-hacked/include/asm-i386/un
  #define __NR_sched_rr_get_interval	161
  #define __NR_nanosleep		162
  #define __NR_mremap		163
-+#define __NR_table		168
++#define __NR_table		188
  
  /* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
  #define _syscall0(type,name) \

kernel/table20/main.c

@@ -257,6 +257,8 @@ sys_table (int type, union table *buf, const void *param)
 		tbl.swap.total = i.totalswap;
 		tbl.swap.used  = i.totalswap - i.freeswap;
 		tbl.swap.free  = i.freeswap;
+		tbl.swap.pagein = kstat.pswpin;
+		tbl.swap.pageout = kstat.pswpout;
 		break;
 	case TABLE_LOADAVG:
 		tbl.loadavg.loadavg [0] = (double) avenrun [0] / (1 << FSHIFT);

kernel/table20/table.h

@@ -1,166 +0,0 @@
-#ifndef _LINUX_TABLE_H
-#define _LINUX_TABLE_H
-
-#ifdef _KERNEL
-#include <linux/types.h>
-#else
-#define NR_TASKS		512
-#endif
-
-#define TABLE_VERSION		0
-#define TABLE_CPU		1
-#define TABLE_MEM		2
-#define TABLE_SWAP		3
-#define TABLE_LOADAVG		4
-#define TABLE_UPTIME		5
-#define TABLE_PROCLIST		6
-#define TABLE_PROC_UID		7
-#define TABLE_PROC_MEM		8
-#define TABLE_PROC_SEGMENT	9
-#define TABLE_PROC_TIME		10
-#define TABLE_PROC_STATE	11
-#define TABLE_PROC_SIGNAL	12
-#define TABLE_PROC_KERNEL	13
-
-/* CPU Usage (in jiffies = 1/100th seconds) */
-
-struct table_cpu
-{
-	unsigned long total;		/* Total CPU Time		*/
-	unsigned long user;		/* CPU Time in User Mode	*/
-	unsigned long nice;		/* CPU Time in User Mode (nice)	*/
-	unsigned long sys;		/* CPU Time in System Mode	*/
-	unsigned long idle;		/* CPU Time in the Idle Task	*/
-	unsigned long frequency;	/* Tick frequency		*/
-};
-
-/* Memory Usage (in bytes) */
-
-struct table_mem
-{
-	unsigned long total;		/* Total physical memory	*/
-	unsigned long used;		/* Used memory size		*/
-	unsigned long free;		/* Free memory size		*/
-	unsigned long shared;		/* Shared memory size		*/
-	unsigned long buffer;		/* Size of buffers		*/
-	unsigned long cached;		/* Size of cached memory       	*/
-};
-
-/* Swap Space (in bytes) */
-
-struct table_swap
-{
-	unsigned long total;		/* Total swap space		*/
-	unsigned long used;		/* Used swap space		*/
-	unsigned long free;		/* Free swap space		*/
-};
-
-/* Load average */
-
-struct table_loadavg
-{
-	double loadavg [3];
-	unsigned nr_running;
-	unsigned nr_tasks;
-	unsigned last_pid;
-};
-
-/* Uptime */
-
-struct table_uptime
-{
-	unsigned long uptime;
-	unsigned long idle;
-};
-
-/* Process list. */
-
-struct table_proclist
-{
-	int nr_running, nr_tasks, last_pid;
-	unsigned pids [NR_TASKS];
-};
-
-/* Information about processes. */
-
-struct table_proc_state
-{
-	long state;
-	unsigned long flags;
-	char comm[16];
-};
-
-struct table_proc_uid
-{
-	int uid, euid, suid, fsuid;
-	int gid, egid, sgid, fsgid;
-	int pid, pgrp, ppid;
-	int session;
-	unsigned int tty;
-	int tpgid;
-	long priority;
-	long counter;
-	long def_priority;
-};
-
-struct table_proc_mem
-{
-	unsigned long context;
-	unsigned long start_code, end_code, start_data, end_data;
-	unsigned long start_brk, brk, start_stack, start_mmap;
-	unsigned long arg_start, arg_end, env_start, env_end;
-	unsigned long rss, rlim, total_vm, locked_vm;
-};
-
-struct table_proc_segment
-{
-	unsigned long vsize;
-	int size, resident, shared;
-	int trs, lrs, drs, dt;
-};
-
-struct table_proc_time
-{
-	long utime, stime, cutime, cstime, start_time;
-	unsigned long timeout, policy, rt_priority;
-	unsigned long it_real_value, it_prof_value, it_virt_value;
-	unsigned long it_real_incr, it_prof_incr, it_virt_incr;
-};
-
-struct table_proc_signal
-{
-	sigset_t signal;
-	sigset_t blocked;	/* bitmap of masked signals */
-	sigset_t ignored;	/* mask of ignored signals */
-	sigset_t caught;	/* mask of caught signals */
-};
-
-struct table_proc_kernel
-{
-	unsigned long keip, kesp, wchan;
-	unsigned long min_flt, maj_flt, cmin_flt, cmaj_flt;
-	unsigned long nswap, cnswap;
-};
-
-/* Union */
-
-union table
-{
-	struct table_cpu cpu;
-	struct table_mem mem;
-	struct table_swap swap;
-	struct table_loadavg loadavg;
-	struct table_uptime uptime;
-	struct table_proclist proclist;
-	struct table_proc_uid proc_uid;
-	struct table_proc_mem proc_mem;
-	struct table_proc_segment proc_segment;
-	struct table_proc_time proc_time;
-	struct table_proc_state proc_state;	
-	struct table_proc_signal proc_signal;
-	struct table_proc_kernel proc_kernel;
-};
-
-#endif /* _LINUX_IPC_H */
-
-

sysdeps/kernel/swap.c

@@ -27,7 +27,8 @@
 
 static unsigned long _glibtop_sysdeps_swap =
 (1 << GLIBTOP_SWAP_TOTAL) + (1 << GLIBTOP_SWAP_USED) +
-(1 << GLIBTOP_SWAP_FREE);
+(1 << GLIBTOP_SWAP_FREE) + (1 << GLIBTOP_SWAP_PAGEIN) +
+(1 << GLIBTOP_SWAP_PAGEOUT);
 
 /* Provides information about swap usage. */
 
@@ -48,4 +49,7 @@ glibtop_get_swap_s (glibtop *server, glibtop_swap *buf)
 	buf->total = tbl.swap.total;
 	buf->used  = tbl.swap.used;
 	buf->free  = tbl.swap.free;
+
+	buf->pagein  = tbl.swap.pagein;
+	buf->pageout = tbl.swap.pageout;
 }

sysdeps/linux/swap.c

@@ -23,9 +23,12 @@
 #include <glibtop/error.h>
 #include <glibtop/swap.h>
 
+#include <fcntl.h>
+
 static unsigned long _glibtop_sysdeps_swap =
 (1 << GLIBTOP_SWAP_TOTAL) + (1 << GLIBTOP_SWAP_USED) +
-(1 << GLIBTOP_SWAP_FREE);
+(1 << GLIBTOP_SWAP_FREE) + (1 << GLIBTOP_SWAP_PAGEIN) +
+(1 << GLIBTOP_SWAP_PAGEOUT);
 
 #define FILENAME	"/proc/meminfo"
 
@@ -34,6 +37,8 @@ static unsigned long _glibtop_sysdeps_swap =
 void
 glibtop_get_swap_s (glibtop *server, glibtop_swap *buf)
 {
+	char buffer [BUFSIZ+1], *ptr;
+	int fd, len;
 	FILE *f;
 
 	glibtop_init_s (&server, 0, 0);
@@ -49,4 +54,14 @@ glibtop_get_swap_s (glibtop *server, glibtop_swap *buf)
 		&buf->total, &buf->used, &buf->free);
 
 	fclose (f);
+
+        fd = open ("/proc/stat", O_RDONLY);
+        len = read (fd, buffer, BUFSIZ);
+        close (fd);
+
+	ptr = strstr (buffer, "\nswap");
+	if (ptr == NULL) return;
+	
+	sscanf (ptr, "\nSwap: %Lu %Lu\n",
+		&buf->pagein, &buf->pageout);
 }

sysdeps/names/swap.c

@@ -23,24 +23,29 @@
 
 const char *glibtop_names_swap [GLIBTOP_MAX_SWAP] =
 {
-	"total", "used", "free"
+	"total", "used", "free", "pagein", "pageout"
 };
 
 const unsigned glibtop_types_swap [GLIBTOP_MAX_SWAP] =
 {
-	GLIBTOP_TYPE_ULONG, GLIBTOP_TYPE_ULONG, GLIBTOP_TYPE_ULONG
+	GLIBTOP_TYPE_ULONG, GLIBTOP_TYPE_ULONG, GLIBTOP_TYPE_ULONG,
+	GLIBTOP_TYPE_ULONG, GLIBTOP_TYPE_ULONG
 };
 
 const char *glibtop_labels_swap [GLIBTOP_MAX_SWAP] =
 {
 	N_("Total Swap Space"),
 	N_("Used Swap Space"),
-	N_("Free Swap Space")
+	N_("Free Swap Space"),
+	N_("Page In"),
+	N_("Page Out"),
 };
 
 const char *glibtop_descriptions_swap [GLIBTOP_MAX_SWAP] =
 {
 	N_("Total Swap Space"),
 	N_("Used Swap Space"),
-	N_("Free Swap Space")
+	N_("Free Swap Space"),
+	N_("Total number of swap pages that have been brought in"),
+	N_("Total number of swap pages that have been brought out"),
 };