The table () system call for 2.1.xx kernels.

kernel/table20/Makefile

@@ -0,0 +1,13 @@
+#
+# Makefile for the linux system information tables.
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+# Note 2! The CFLAGS definition is now in the main makefile...
+
+O_TARGET := table.o
+O_OBJS   := main.o
+
+include $(TOPDIR)/Rules.make

kernel/table20/README

@@ -0,0 +1,21 @@
+This is a new system call `table ()' for the Linux table. It is faster
+than reading from /proc and can be used to fetch all information required
+for libgtop until whe have some other function (extended sysctl, ...) in
+standard kernels.
+
+I didn't want to change sysctl or some other function myself cause this may
+cause other applications relying upon those function to fail. This is
+something for the ``real'' kernel gurus ...
+
+To use this new system call for libgtop, do the following:
+
+* Copy this directory to /usr/src/linux/table
+* Make /usr/src/linux/include/linux/table.h symlink to /usr/src/linux/table/table.h
+* Apply the patch `kernel.patch' to the kernel, compile, install and reboot
+* Recompile libgtop (remove `config.cache' and run the `autogen.sh' again).
+
+If you want to change and/or add something - feel free to do so !
+
+Have fun,
+
+Martin

kernel/table20/kernel.patch

@@ -0,0 +1,49 @@
+diff -ur linux-2.0.32/Makefile linux-hacked/Makefile
+--- linux-2.0.32/Makefile	Fri Nov  7 19:51:05 1997
++++ linux-hacked/Makefile	Thu Jun 11 20:41:12 1998
+@@ -87,7 +87,7 @@
+ # standard CFLAGS
+ #
+ 
+-CFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -fno-strength-reduce
++CFLAGS = -Wall -Wstrict-prototypes -g -O2 -fomit-frame-pointer -fno-strength-reduce
+ 
+ ifdef CONFIG_CPP
+ CFLAGS := $(CFLAGS) -x c++
+@@ -113,12 +113,12 @@
+ # Include the make variables (CC, etc...)
+ #
+ 
+-ARCHIVES	=kernel/kernel.o mm/mm.o fs/fs.o ipc/ipc.o net/network.a
++ARCHIVES	=kernel/kernel.o mm/mm.o fs/fs.o ipc/ipc.o net/network.a table/table.o
+ FILESYSTEMS	=fs/filesystems.a
+ DRIVERS		=drivers/block/block.a \
+ 		 drivers/char/char.a
+ LIBS		=$(TOPDIR)/lib/lib.a
+-SUBDIRS		=kernel drivers mm fs net ipc lib
++SUBDIRS		=kernel drivers mm fs net ipc lib table
+ 
+ ifeq ($(CONFIG_ISDN),y)
+ DRIVERS := $(DRIVERS) drivers/isdn/isdn.a
+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 @@
+ 	.long SYMBOL_NAME(sys_mremap)
+ 	.long 0,0
+ 	.long SYMBOL_NAME(sys_vm86)
+-	.space (NR_syscalls-166)*4
++	.long 0
++	.long SYMBOL_NAME(sys_table)
++	.space (NR_syscalls-168)*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
+@@ -169,6 +169,7 @@
+ #define __NR_sched_rr_get_interval	161
+ #define __NR_nanosleep		162
+ #define __NR_mremap		163
++#define __NR_table		168
+ 
+ /* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
+ #define _syscall0(type,name) \

kernel/table20/main.c

@@ -0,0 +1,437 @@
+/*
+ * linux/table/table_impl.c
+ * Copyright (C) 1998 Martin Baulig
+ */
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/kernel_stat.h>
+#include <linux/tty.h>
+#include <linux/user.h>
+#include <linux/a.out.h>
+#include <linux/string.h>
+#include <linux/mman.h>
+#include <linux/proc_fs.h>
+#include <linux/ioport.h>
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <linux/pagemap.h>
+#include <linux/swap.h>
+
+#include <asm/segment.h>
+#include <asm/pgtable.h>
+#include <asm/io.h>
+
+#include <linux/table.h>
+
+#include "version.h"
+
+#if defined(__i386__)
+# define KSTK_EIP(tsk)	(((unsigned long *)tsk->kernel_stack_page)[1019])
+# define KSTK_ESP(tsk)	(((unsigned long *)tsk->kernel_stack_page)[1022])
+#elif defined(__alpha__)
+  /*
+   * See arch/alpha/kernel/ptrace.c for details.
+   */
+# define PT_REG(reg)		(PAGE_SIZE - sizeof(struct pt_regs)	\
+				 + (long)&((struct pt_regs *)0)->reg)
+# define KSTK_EIP(tsk)	(*(unsigned long *)(tsk->kernel_stack_page + PT_REG(pc)))
+# define KSTK_ESP(tsk)	((tsk) == current ? rdusp() : (tsk)->tss.usp)
+#elif defined(__sparc__)
+# define PT_REG(reg)            (PAGE_SIZE - sizeof(struct pt_regs)     \
+                                 + (long)&((struct pt_regs *)0)->reg)
+# define KSTK_EIP(tsk)  (*(unsigned long *)(tsk->kernel_stack_page + PT_REG(pc)))
+# define KSTK_ESP(tsk)  (*(unsigned long *)(tsk->kernel_stack_page + PT_REG(u_regs[UREG_FP])))
+#endif
+
+static struct task_struct *
+get_task (pid_t pid)
+{
+	struct task_struct ** p;
+	
+	p = task;
+	while (++p < task+NR_TASKS) {
+		if (*p && (*p)->pid == pid)
+			return *p;
+	}
+
+	return NULL;
+}
+
+static inline void statm_pte_range(pmd_t * pmd, unsigned long address, unsigned long size,
+	int * pages, int * shared, int * dirty, int * total)
+{
+	pte_t * pte;
+	unsigned long end;
+
+	if (pmd_none(*pmd))
+		return;
+	if (pmd_bad(*pmd)) {
+		printk("statm_pte_range: bad pmd (%08lx)\n", pmd_val(*pmd));
+		pmd_clear(pmd);
+		return;
+	}
+	pte = pte_offset(pmd, address);
+	address &= ~PMD_MASK;
+	end = address + size;
+	if (end > PMD_SIZE)
+		end = PMD_SIZE;
+	do {
+		pte_t page = *pte;
+
+		address += PAGE_SIZE;
+		pte++;
+		if (pte_none(page))
+			continue;
+		++*total;
+		if (!pte_present(page))
+			continue;
+		++*pages;
+		if (pte_dirty(page))
+			++*dirty;
+		if (pte_page(page) >= high_memory)
+			continue;
+		if (mem_map[MAP_NR(pte_page(page))].count > 1)
+			++*shared;
+	} while (address < end);
+}
+
+static inline void statm_pmd_range(pgd_t * pgd, unsigned long address, unsigned long size,
+	int * pages, int * shared, int * dirty, int * total)
+{
+	pmd_t * pmd;
+	unsigned long end;
+
+	if (pgd_none(*pgd))
+		return;
+	if (pgd_bad(*pgd)) {
+		printk("statm_pmd_range: bad pgd (%08lx)\n", pgd_val(*pgd));
+		pgd_clear(pgd);
+		return;
+	}
+	pmd = pmd_offset(pgd, address);
+	address &= ~PGDIR_MASK;
+	end = address + size;
+	if (end > PGDIR_SIZE)
+		end = PGDIR_SIZE;
+	do {
+		statm_pte_range(pmd, address, end - address, pages, shared, dirty, total);
+		address = (address + PMD_SIZE) & PMD_MASK;
+		pmd++;
+	} while (address < end);
+}
+
+static void statm_pgd_range(pgd_t * pgd, unsigned long address, unsigned long end,
+	int * pages, int * shared, int * dirty, int * total)
+{
+	while (address < end) {
+		statm_pmd_range(pgd, address, end - address, pages, shared, dirty, total);
+		address = (address + PGDIR_SIZE) & PGDIR_MASK;
+		pgd++;
+	}
+}
+
+static unsigned long
+get_wchan (struct task_struct *p)
+{
+	if (!p || p == current || p->state == TASK_RUNNING)
+		return 0;
+#if defined(__i386__)
+	{
+		unsigned long ebp, eip;
+		unsigned long stack_page;
+		int count = 0;
+
+		stack_page = p->kernel_stack_page;
+		if (!stack_page)
+			return 0;
+		ebp = p->tss.ebp;
+		do {
+			if (ebp < stack_page || ebp >= 4092+stack_page)
+				return 0;
+			eip = *(unsigned long *) (ebp+4);
+			if (eip < (unsigned long) interruptible_sleep_on
+			    || eip >= (unsigned long) add_timer)
+				return eip;
+			ebp = *(unsigned long *) ebp;
+		} while (count++ < 16);
+	}
+#elif defined(__alpha__)
+	/*
+	 * This one depends on the frame size of schedule().  Do a
+	 * "disass schedule" in gdb to find the frame size.  Also, the
+	 * code assumes that sleep_on() follows immediately after
+	 * interruptible_sleep_on() and that add_timer() follows
+	 * immediately after interruptible_sleep().  Ugly, isn't it?
+	 * Maybe adding a wchan field to task_struct would be better,
+	 * after all...
+	 */
+	{
+		unsigned long schedule_frame;
+		unsigned long pc;
+		
+		pc = thread_saved_pc(&p->tss);
+		if (pc >= (unsigned long) interruptible_sleep_on && pc < (unsigned long) add_timer) {
+			schedule_frame = ((unsigned long *)p->tss.ksp)[6];
+			return ((unsigned long *)schedule_frame)[12];
+		}
+		return pc;
+	}
+#endif
+	return 0;
+}
+
+asmlinkage int
+sys_table (int type, union table *buf, const void *param)
+{
+	union table tbl;
+	struct sysinfo i;
+	struct task_struct *tsk = NULL;
+	int index, err;
+	pid_t pid;
+
+	if (type == TABLE_VERSION)
+		return _TABLE_VERSION;
+
+	if (!buf)
+		return -EFAULT;
+
+	memset (&tbl, 0, sizeof (union table));
+
+	/* For TABLE_PROC_*, read pid and get task_struct */
+
+	switch (type) {
+	case TABLE_PROC_UID:
+	case TABLE_PROC_MEM:
+	case TABLE_PROC_SEGMENT:
+	case TABLE_PROC_TIME:
+	case TABLE_PROC_STATE:
+	case TABLE_PROC_SIGNAL:
+	case TABLE_PROC_KERNEL:
+	  err = verify_area (VERIFY_READ, param, sizeof (pid_t));
+		if (err)
+			return err;
+		memcpy_fromfs (&pid, param, sizeof (pid_t));
+
+		tsk = get_task (pid);
+		if (tsk == NULL)
+			return -ESRCH;
+		break;
+	}
+
+	/* Main function dispatcher */
+
+	switch (type) {
+	case TABLE_PROCLIST:
+		tsk = task [0];
+		for (index = 0; index < nr_tasks; index++) {
+			tbl.proclist.pids [index] = tsk->pid;
+			tsk = tsk->next_task;
+		}
+		tbl.proclist.nr_running = nr_running;
+		tbl.proclist.nr_tasks = nr_tasks;
+		tbl.proclist.last_pid = last_pid;
+		break;
+	case TABLE_CPU:
+		tbl.cpu.total = jiffies;    
+		tbl.cpu.user  = kstat.cpu_user;
+		tbl.cpu.nice  = kstat.cpu_nice;
+		tbl.cpu.sys   = kstat.cpu_system;
+		tbl.cpu.idle  = tbl.cpu.total -
+			(tbl.cpu.user + tbl.cpu.nice + tbl.cpu.sys);
+		tbl.cpu.frequency = HZ;
+		break;
+	case TABLE_MEM:
+		si_meminfo (&i);
+		tbl.mem.total  = i.totalram;
+		tbl.mem.used   = i.totalram - i.freeram;
+		tbl.mem.free   = i.freeram;
+		tbl.mem.shared = i.sharedram;
+		tbl.mem.buffer = i.bufferram;
+		tbl.mem.cached = page_cache_size << PAGE_SHIFT;
+		break;
+	case TABLE_SWAP:
+		si_swapinfo (&i);
+		tbl.swap.total = i.totalswap;
+		tbl.swap.used  = i.totalswap - i.freeswap;
+		tbl.swap.free  = i.freeswap;
+		break;
+	case TABLE_LOADAVG:
+		tbl.loadavg.loadavg [0] = (double) avenrun [0] / (1 << FSHIFT);
+		tbl.loadavg.loadavg [1] = (double) avenrun [1] / (1 << FSHIFT);
+		tbl.loadavg.loadavg [2] = (double) avenrun [2] / (1 << FSHIFT);
+		tbl.loadavg.nr_running = nr_running;
+		tbl.loadavg.nr_tasks = nr_tasks;
+		tbl.loadavg.last_pid = last_pid;
+		break;
+	case TABLE_UPTIME:
+		tbl.uptime.uptime = jiffies;
+		tbl.uptime.idle   = task[0]->utime + task[0]->stime;
+		break;
+	case TABLE_PROC_STATE:
+		tbl.proc_state.state = tsk->state;
+		tbl.proc_state.flags = tsk->flags;
+		memcpy (tbl.proc_state.comm, tsk->comm,
+			sizeof (tbl.proc_state.comm));
+		break;
+	case TABLE_PROC_UID:
+		tbl.proc_uid.uid = tsk->uid;
+		tbl.proc_uid.euid = tsk->euid;
+		tbl.proc_uid.suid = tsk->suid;
+		tbl.proc_uid.fsuid = tsk->fsuid;
+		
+		tbl.proc_uid.gid = tsk->gid;
+		tbl.proc_uid.egid = tsk->egid;
+		tbl.proc_uid.sgid = tsk->sgid;
+		tbl.proc_uid.fsgid = tsk->fsgid;
+		
+		tbl.proc_uid.pid = tsk->pid;
+		tbl.proc_uid.pgrp = tsk->pgrp;
+		tbl.proc_uid.ppid = tsk->p_pptr->pid;
+		
+		tbl.proc_uid.session = tsk->session;
+	        tbl.proc_uid.tty = tsk->tty ?
+			kdev_t_to_nr (tsk->tty->device) : 0;
+		tbl.proc_uid.tpgid = tsk->tty ? tsk->tty->pgrp : -1;
+		
+		tbl.proc_uid.priority = tsk->priority;
+		tbl.proc_uid.counter = tsk->counter;
+		tbl.proc_uid.def_priority = DEF_PRIORITY;
+		break;
+	case TABLE_PROC_SIGNAL:
+		tbl.proc_signal.signal = tsk->signal;
+		tbl.proc_signal.blocked = tsk->blocked;
+
+		if (tsk->sig) {
+			struct sigaction * action = tsk->sig->action;
+			unsigned long sig_ign = 0, sig_caught = 0;
+			unsigned long bit = 1;
+			int i;
+			
+			for (i = 0; i < 32; i++) {
+				switch((unsigned long) action->sa_handler) {
+				case 0:
+					break;
+				case 1:
+					sig_ign |= bit;
+					break;
+				default:
+					sig_caught |= bit;
+				}
+				bit <<= 1;
+				action++;
+			}
+
+			tbl.proc_signal.ignored = sig_ign;
+			tbl.proc_signal.caught  = sig_caught;
+		} else {
+			tbl.proc_signal.ignored = 0;
+			tbl.proc_signal.caught  = 0;
+		}
+		break;
+	case TABLE_PROC_MEM:
+		if (tsk->mm && tsk->mm != &init_mm) {
+			tbl.proc_mem.context = tsk->mm->context;
+			tbl.proc_mem.start_code = tsk->mm->start_code;
+			tbl.proc_mem.end_code = tsk->mm->end_code;
+			tbl.proc_mem.start_data = tsk->mm-> start_data;
+			tbl.proc_mem.end_data = tsk->mm->end_data;
+			tbl.proc_mem.start_brk = tsk->mm->start_brk;
+			tbl.proc_mem.brk = tsk->mm->brk;
+			tbl.proc_mem.start_stack = tsk->mm->start_stack;
+			tbl.proc_mem.start_mmap = tsk->mm->start_mmap;
+			tbl.proc_mem.arg_start = tsk->mm->arg_start;
+			tbl.proc_mem.arg_end = tsk->mm->arg_end;
+			tbl.proc_mem.env_start = tsk->mm->env_start;
+			tbl.proc_mem.env_end = tsk->mm->env_end;
+			tbl.proc_mem.rss = tsk->mm->rss;
+			tbl.proc_mem.total_vm = tsk->mm->total_vm;
+			tbl.proc_mem.locked_vm = tsk->mm->locked_vm;
+		}
+		tbl.proc_mem.rlim = tsk->rlim ?
+			tsk->rlim[RLIMIT_RSS].rlim_cur : 0;
+		break;
+	case TABLE_PROC_SEGMENT:
+		if (tsk->mm && tsk->mm != &init_mm) {
+			unsigned long vsize = 0;
+			int size = 0, resident = 0, share = 0;
+			int trs = 0, lrs = 0, drs = 0, dt = 0;
+			struct vm_area_struct * vma = tsk->mm->mmap;
+
+			while (vma) {
+				pgd_t *pgd = pgd_offset(tsk->mm, vma->vm_start);
+				int pages = 0, shared = 0, dirty = 0, total = 0;
+				
+				vsize += vma->vm_end - vma->vm_start;
+
+				statm_pgd_range (pgd, vma->vm_start, vma->vm_end,
+						 &pages, &shared, &dirty, &total);
+				resident += pages;
+				share += shared;
+				dt += dirty;
+				size += total;
+				if (vma->vm_flags & VM_EXECUTABLE)
+					trs += pages;	/* text */
+				else if (vma->vm_flags & VM_GROWSDOWN)
+					drs += pages;	/* stack */
+				else if (vma->vm_end > 0x60000000)
+					lrs += pages;	/* library */
+				else
+					drs += pages;
+				vma = vma->vm_next;
+			}
+
+			tbl.proc_segment.vsize = vsize;
+			tbl.proc_segment.size = size;
+			tbl.proc_segment.resident = resident;
+			tbl.proc_segment.shared = share;
+			tbl.proc_segment.trs = trs;
+			tbl.proc_segment.lrs = lrs;
+			tbl.proc_segment.dt = dt;
+		}
+		break;
+	case TABLE_PROC_TIME:
+		tbl.proc_time.utime = tsk->utime;
+		tbl.proc_time.stime = tsk->stime;
+		tbl.proc_time.cutime = tsk->cutime;
+		tbl.proc_time.cstime = tsk->cstime;
+
+		tbl.proc_time.start_time = tsk->start_time;
+		tbl.proc_time.timeout = tsk->timeout;
+		tbl.proc_time.policy = tsk->policy;
+		tbl.proc_time.rt_priority = tsk->rt_priority;
+
+		tbl.proc_time.it_real_value = tsk->it_real_value;
+		tbl.proc_time.it_prof_value = tsk->it_prof_value;
+		tbl.proc_time.it_virt_value = tsk->it_virt_value;
+		tbl.proc_time.it_real_incr = tsk->it_real_incr;
+		tbl.proc_time.it_prof_incr = tsk->it_prof_incr;
+		tbl.proc_time.it_virt_incr = tsk->it_virt_incr;
+		break;
+	case TABLE_PROC_KERNEL:
+		tbl.proc_kernel.min_flt = tsk->min_flt;
+		tbl.proc_kernel.cmin_flt = tsk->cmin_flt;
+		tbl.proc_kernel.maj_flt = tsk->maj_flt;
+		tbl.proc_kernel.cmaj_flt = tsk->cmaj_flt;
+		
+		tbl.proc_kernel.kesp = tsk->kernel_stack_page ? KSTK_EIP(tsk) : 0;
+		tbl.proc_kernel.keip = tsk->kernel_stack_page ? KSTK_ESP(tsk) : 0;
+		
+		tbl.proc_kernel.nswap = tsk->nswap;
+		tbl.proc_kernel.cnswap = tsk->cnswap;
+
+		tbl.proc_kernel.wchan = get_wchan (tsk);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	err = verify_area (VERIFY_WRITE, buf, sizeof (struct table));
+	if (err)
+		return err;
+
+	memcpy_tofs (buf, &tbl, sizeof (union table));
+	return 0;
+}

kernel/table20/table.h

@@ -0,0 +1,166 @@
+#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 */
+
+

kernel/table20/version.h

@@ -0,0 +1 @@
+#define _TABLE_VERSION	1

kernel/table21/Makefile

@@ -0,0 +1,16 @@
+#
+# Makefile for the linux system information tables.
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+# Note 2! The CFLAGS definition is now in the main makefile...
+
+O_TARGET := table.o
+OX_OBJS  := main.o
+
+M_TARGET := module.o
+MX_OBJS  := module.o
+
+include $(TOPDIR)/Rules.make

kernel/table21/README

@@ -0,0 +1,21 @@
+This is a new system call `table ()' for the Linux table. It is faster
+than reading from /proc and can be used to fetch all information required
+for libgtop until whe have some other function (extended sysctl, ...) in
+standard kernels.
+
+I didn't want to change sysctl or some other function myself cause this may
+cause other applications relying upon those function to fail. This is
+something for the ``real'' kernel gurus ...
+
+To use this new system call for libgtop, do the following:
+
+* Copy this directory to /usr/src/linux/table
+* Make /usr/src/linux/include/linux/table.h symlink to /usr/src/linux/table/table.h
+* Apply the patch `kernel.patch' to the kernel, compile, install and reboot
+* Recompile libgtop (remove `config.cache' and run the `autogen.sh' again).
+
+If you want to change and/or add something - feel free to do so !
+
+Have fun,
+
+Martin

kernel/table21/main.c

@@ -0,0 +1,61 @@
+/*
+ * linux/table/table_impl.c
+ * Copyright (C) 1998 Martin Baulig
+ */
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/kernel_stat.h>
+#include <linux/tty.h>
+#include <linux/user.h>
+#include <linux/a.out.h>
+#include <linux/string.h>
+#include <linux/mman.h>
+#include <linux/proc_fs.h>
+#include <linux/ioport.h>
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <linux/pagemap.h>
+#include <linux/swap.h>
+#include <linux/slab.h>
+#include <linux/smp.h>
+#include <linux/signal.h>
+
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+#include <asm/io.h>
+
+#include <linux/module.h>
+#include <linux/table.h>
+
+#include "version.h"
+
+extern void scheduling_functions_start_here(void);
+extern void scheduling_functions_end_here(void);
+
+int (*table_function_ptr) (int, union table *, const void *) = 0;
+
+EXPORT_SYMBOL(table_function_ptr);
+
+EXPORT_SYMBOL(nr_running);
+EXPORT_SYMBOL(pidhash);
+EXPORT_SYMBOL(task);
+EXPORT_SYMBOL(si_swapinfo);
+EXPORT_SYMBOL(scheduling_functions_start_here);
+EXPORT_SYMBOL(scheduling_functions_end_here);
+EXPORT_SYMBOL(avenrun);
+EXPORT_SYMBOL(nr_tasks);
+EXPORT_SYMBOL(last_pid);
+EXPORT_SYMBOL(page_cache_size);
+EXPORT_SYMBOL(init_mm);
+
+asmlinkage int
+sys_table (int type, union table *buf, const void *param)
+{
+	if (table_function_ptr == 0)
+		return -ENOSYS;
+
+	return (*table_function_ptr) (type, buf, param);
+}

kernel/table21/module.c

@@ -0,0 +1,524 @@
+/*
+ * linux/table/table_impl.c
+ * Copyright (C) 1998 Martin Baulig
+ */
+
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/kernel_stat.h>
+#include <linux/tty.h>
+#include <linux/user.h>
+#include <linux/a.out.h>
+#include <linux/string.h>
+#include <linux/mman.h>
+#include <linux/proc_fs.h>
+#include <linux/ioport.h>
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <linux/pagemap.h>
+#include <linux/swap.h>
+#include <linux/slab.h>
+#include <linux/smp.h>
+#include <linux/signal.h>
+
+#include <asm/uaccess.h>
+#include <asm/pgtable.h>
+#include <asm/io.h>
+
+#include <linux/module.h>
+#include <linux/table.h>
+
+#include "version.h"
+
+extern int (*table_function_ptr) (int, union table *, const void *);
+
+int table_fkt (int, union table *, const void *);
+
+EXPORT_NO_SYMBOLS;
+
+int
+init_module(void)
+{
+	printk ("init_module () = %p\n", table_fkt);
+	table_function_ptr = table_fkt;
+	return 0;
+}
+
+void
+cleanup_module(void)
+{
+	table_function_ptr = 0;
+}
+
+#define LOAD_INT(x) ((x) >> FSHIFT)
+#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
+
+#ifdef CONFIG_DEBUG_MALLOC
+int get_malloc(char * buffer);
+#endif
+
+static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign,
+				    sigset_t *catch)
+{
+	struct k_sigaction *k;
+	int i;
+
+	sigemptyset(ign);
+	sigemptyset(catch);
+
+	if (p->sig) {
+		k = p->sig->action;
+		for (i = 1; i <= _NSIG; ++i, ++k) {
+			if (k->sa.sa_handler == SIG_IGN)
+				sigaddset(ign, i);
+			else if (k->sa.sa_handler != SIG_DFL)
+				sigaddset(catch, i);
+		}
+	}
+}
+
+/*
+ * These bracket the sleeping functions..
+ */
+extern void scheduling_functions_start_here(void);
+extern void scheduling_functions_end_here(void);
+#define first_sched	((unsigned long) scheduling_functions_start_here)
+#define last_sched	((unsigned long) scheduling_functions_end_here)
+
+static unsigned long get_wchan(struct task_struct *p)
+{
+	if (!p || p == current || p->state == TASK_RUNNING)
+		return 0;
+#if defined(__i386__)
+	{
+		unsigned long ebp, eip;
+		unsigned long stack_page;
+		int count = 0;
+
+		stack_page = 4096 + (unsigned long)p;
+		if (!stack_page)
+			return 0;
+		ebp = p->tss.ebp;
+		do {
+			if (ebp < stack_page || ebp >= 4092+stack_page)
+				return 0;
+			eip = *(unsigned long *) (ebp+4);
+			if (eip < first_sched || eip >= last_sched)
+				return eip;
+			ebp = *(unsigned long *) ebp;
+		} while (count++ < 16);
+	}
+#elif defined(__alpha__)
+	/*
+	 * This one depends on the frame size of schedule().  Do a
+	 * "disass schedule" in gdb to find the frame size.  Also, the
+	 * code assumes that sleep_on() follows immediately after
+	 * interruptible_sleep_on() and that add_timer() follows
+	 * immediately after interruptible_sleep().  Ugly, isn't it?
+	 * Maybe adding a wchan field to task_struct would be better,
+	 * after all...
+	 */
+	{
+	    unsigned long schedule_frame;
+	    unsigned long pc;
+
+	    pc = thread_saved_pc(&p->tss);
+	    if (pc >= first_sched && pc < last_sched) {
+		schedule_frame = ((unsigned long *)p->tss.ksp)[6];
+		return ((unsigned long *)schedule_frame)[12];
+	    }
+	    return pc;
+	}	
+#elif defined(__mc68000__)
+	{
+	    unsigned long fp, pc;
+	    unsigned long stack_page;
+	    int count = 0;
+	    extern int sys_pause (void);
+
+	    stack_page = p->kernel_stack_page;
+	    if (!stack_page)
+		    return 0;
+	    fp = ((struct switch_stack *)p->tss.ksp)->a6;
+	    do {
+		    if (fp < stack_page || fp >= 4088+stack_page)
+			    return 0;
+		    pc = ((unsigned long *)fp)[1];
+		/* FIXME: This depends on the order of these functions. */
+		    if (pc < first_sched || pc >= last_sched)
+		      return pc;
+		    fp = *(unsigned long *) fp;
+	    } while (count++ < 16);
+	}
+#elif defined(__powerpc__)
+	return (p->tss.wchan);
+#elif defined (CONFIG_ARM)
+	{
+		unsigned long fp, lr;
+		unsigned long stack_page;
+		int count = 0;
+
+		stack_page = 4096 + (unsigned long)p;
+		fp = get_css_fp (&p->tss);
+		do {
+			if (fp < stack_page || fp > 4092+stack_page)
+				return 0;
+			lr = pc_pointer (((unsigned long *)fp)[-1]);
+			if (lr < first_sched || lr > last_sched)
+				return lr;
+			fp = *(unsigned long *) (fp - 12);
+		} while (count ++ < 16);
+	}
+#endif
+	return 0;
+}
+
+#if defined(__i386__)
+# define KSTK_EIP(tsk)	(((unsigned long *)(4096+(unsigned long)(tsk)))[1019])
+# define KSTK_ESP(tsk)	(((unsigned long *)(4096+(unsigned long)(tsk)))[1022])
+#elif defined(__alpha__)
+  /*
+   * See arch/alpha/kernel/ptrace.c for details.
+   */
+# define PT_REG(reg)		(PAGE_SIZE - sizeof(struct pt_regs)	\
+				 + (long)&((struct pt_regs *)0)->reg)
+# define KSTK_EIP(tsk) \
+    (*(unsigned long *)(PT_REG(pc) + PAGE_SIZE + (unsigned long)(tsk)))
+# define KSTK_ESP(tsk)	((tsk) == current ? rdusp() : (tsk)->tss.usp)
+#elif defined(CONFIG_ARM)
+# define KSTK_EIP(tsk)	(((unsigned long *)(4096+(unsigned long)(tsk)))[1022])
+# define KSTK_ESP(tsk)	(((unsigned long *)(4096+(unsigned long)(tsk)))[1020])
+#elif defined(__mc68000__)
+#define	KSTK_EIP(tsk)	\
+    ({			\
+	unsigned long eip = 0;	 \
+ 	if ((tsk)->tss.esp0 > PAGE_SIZE && \
+	    MAP_NR((tsk)->tss.esp0) < max_mapnr) \
+	      eip = ((struct pt_regs *) (tsk)->tss.esp0)->pc;	 \
+        eip; })
+#define	KSTK_ESP(tsk)	((tsk) == current ? rdusp() : (tsk)->tss.usp)
+#elif defined(__powerpc__)
+#define KSTK_EIP(tsk)	((tsk)->tss.regs->nip)
+#define KSTK_ESP(tsk)	((tsk)->tss.regs->gpr[1])
+#elif defined (__sparc_v9__)
+# define KSTK_EIP(tsk)  ((tsk)->tss.kregs->tpc)
+# define KSTK_ESP(tsk)  ((tsk)->tss.kregs->u_regs[UREG_FP])
+#elif defined(__sparc__)
+# define KSTK_EIP(tsk)  ((tsk)->tss.kregs->pc)
+# define KSTK_ESP(tsk)  ((tsk)->tss.kregs->u_regs[UREG_FP])
+#endif
+
+/* Gcc optimizes away "strlen(x)" for constant x */
+#define ADDBUF(buffer, string) \
+do { memcpy(buffer, string, strlen(string)); \
+     buffer += strlen(string); } while (0)
+
+static inline void statm_pte_range(pmd_t * pmd, unsigned long address, unsigned long size,
+	int * pages, int * shared, int * dirty, int * total)
+{
+	pte_t * pte;
+	unsigned long end;
+
+	if (pmd_none(*pmd))
+		return;
+	if (pmd_bad(*pmd)) {
+		printk("statm_pte_range: bad pmd (%08lx)\n", pmd_val(*pmd));
+		pmd_clear(pmd);
+		return;
+	}
+	pte = pte_offset(pmd, address);
+	address &= ~PMD_MASK;
+	end = address + size;
+	if (end > PMD_SIZE)
+		end = PMD_SIZE;
+	do {
+		pte_t page = *pte;
+
+		address += PAGE_SIZE;
+		pte++;
+		if (pte_none(page))
+			continue;
+		++*total;
+		if (!pte_present(page))
+			continue;
+		++*pages;
+		if (pte_dirty(page))
+			++*dirty;
+		if (MAP_NR(pte_page(page)) >= max_mapnr)
+			continue;
+		if (atomic_read(&mem_map[MAP_NR(pte_page(page))].count) > 1)
+			++*shared;
+	} while (address < end);
+}
+
+static inline void statm_pmd_range(pgd_t * pgd, unsigned long address, unsigned long size,
+	int * pages, int * shared, int * dirty, int * total)
+{
+	pmd_t * pmd;
+	unsigned long end;
+
+	if (pgd_none(*pgd))
+		return;
+	if (pgd_bad(*pgd)) {
+		printk("statm_pmd_range: bad pgd (%08lx)\n", pgd_val(*pgd));
+		pgd_clear(pgd);
+		return;
+	}
+	pmd = pmd_offset(pgd, address);
+	address &= ~PGDIR_MASK;
+	end = address + size;
+	if (end > PGDIR_SIZE)
+		end = PGDIR_SIZE;
+	do {
+		statm_pte_range(pmd, address, end - address, pages, shared, dirty, total);
+		address = (address + PMD_SIZE) & PMD_MASK;
+		pmd++;
+	} while (address < end);
+}
+
+static void statm_pgd_range(pgd_t * pgd, unsigned long address, unsigned long end,
+	int * pages, int * shared, int * dirty, int * total)
+{
+	while (address < end) {
+		statm_pmd_range(pgd, address, end - address, pages, shared, dirty, total);
+		address = (address + PGDIR_SIZE) & PGDIR_MASK;
+		pgd++;
+	}
+}
+
+int
+table_fkt (int type, union table *buf, const void *param)
+{
+	union table tbl;
+	struct sysinfo i;
+	struct task_struct *tsk = NULL;
+	int index, err;
+	pid_t pid;
+
+	if (type == TABLE_VERSION)
+		return _TABLE_VERSION;
+
+	if (!buf)
+		return -EFAULT;
+
+	memset (&tbl, 0, sizeof (union table));
+
+	/* For TABLE_PROC_*, read pid and get task_struct */
+
+	switch (type) {
+	case TABLE_PROC_UID:
+	case TABLE_PROC_MEM:
+	case TABLE_PROC_SEGMENT:
+	case TABLE_PROC_TIME:
+	case TABLE_PROC_STATE:
+	case TABLE_PROC_SIGNAL:
+	case TABLE_PROC_KERNEL:
+		err = verify_area (VERIFY_READ, param, sizeof (pid_t));
+		if (err)
+			return err;
+		copy_from_user (&pid, param, sizeof (pid_t));
+
+		read_lock (&tasklist_lock);
+		tsk = find_task_by_pid (pid);
+		/* FIXME!! This should be done after the last use */
+		read_unlock(&tasklist_lock);
+
+		if (tsk == NULL)
+			return -ESRCH;
+		break;
+	}
+
+	/* Main function dispatcher */
+
+	switch (type) {
+	case TABLE_PROCLIST:
+		tsk = task [0];
+		for (index = 0; index < nr_tasks; index++) {
+			tbl.proclist.pids [index] = tsk->pid;
+			tsk = tsk->next_task;
+		}
+		tbl.proclist.nr_running = nr_running;
+		tbl.proclist.nr_tasks = nr_tasks;
+		tbl.proclist.last_pid = last_pid;
+		break;
+	case TABLE_CPU:
+		tbl.cpu.total = jiffies;    
+		tbl.cpu.user  = kstat.cpu_user;
+		tbl.cpu.nice  = kstat.cpu_nice;
+		tbl.cpu.sys   = kstat.cpu_system;
+		tbl.cpu.idle  = tbl.cpu.total -
+			(tbl.cpu.user + tbl.cpu.nice + tbl.cpu.sys);
+		tbl.cpu.frequency = HZ;
+		break;
+	case TABLE_MEM:
+		si_meminfo (&i);
+		tbl.mem.total  = i.totalram;
+		tbl.mem.used   = i.totalram - i.freeram;
+		tbl.mem.free   = i.freeram;
+		tbl.mem.shared = i.sharedram;
+		tbl.mem.buffer = i.bufferram;
+		tbl.mem.cached = page_cache_size << PAGE_SHIFT;
+		break;
+	case TABLE_SWAP:
+		si_swapinfo (&i);
+		tbl.swap.total = i.totalswap;
+		tbl.swap.used  = i.totalswap - i.freeswap;
+		tbl.swap.free  = i.freeswap;
+		break;
+	case TABLE_LOADAVG:
+		tbl.loadavg.loadavg [0] = (double) avenrun [0] / (1 << FSHIFT);
+		tbl.loadavg.loadavg [1] = (double) avenrun [1] / (1 << FSHIFT);
+		tbl.loadavg.loadavg [2] = (double) avenrun [2] / (1 << FSHIFT);
+		tbl.loadavg.nr_running = nr_running;
+		tbl.loadavg.nr_tasks = nr_tasks;
+		tbl.loadavg.last_pid = last_pid;
+		break;
+	case TABLE_UPTIME:
+		tbl.uptime.uptime = jiffies;
+		tbl.uptime.idle   = task[0]->times.tms_utime +
+			task[0]->times.tms_stime;
+		break;
+	case TABLE_PROC_STATE:
+		tbl.proc_state.state = tsk->state;
+		tbl.proc_state.flags = tsk->flags;
+		memcpy (tbl.proc_state.comm, tsk->comm,
+			sizeof (tbl.proc_state.comm));
+		break;
+	case TABLE_PROC_UID:
+		tbl.proc_uid.uid = tsk->uid;
+		tbl.proc_uid.euid = tsk->euid;
+		tbl.proc_uid.suid = tsk->suid;
+		tbl.proc_uid.fsuid = tsk->fsuid;
+		
+		tbl.proc_uid.gid = tsk->gid;
+		tbl.proc_uid.egid = tsk->egid;
+		tbl.proc_uid.sgid = tsk->sgid;
+		tbl.proc_uid.fsgid = tsk->fsgid;
+		
+		tbl.proc_uid.pid = tsk->pid;
+		tbl.proc_uid.pgrp = tsk->pgrp;
+		tbl.proc_uid.ppid = tsk->p_pptr->pid;
+		
+		tbl.proc_uid.session = tsk->session;
+	        tbl.proc_uid.tty = tsk->tty ?
+			kdev_t_to_nr (tsk->tty->device) : 0;
+		tbl.proc_uid.tpgid = tsk->tty ? tsk->tty->pgrp : -1;
+		
+		tbl.proc_uid.priority = tsk->priority;
+		tbl.proc_uid.counter = tsk->counter;
+		tbl.proc_uid.def_priority = DEF_PRIORITY;
+		break;
+	case TABLE_PROC_SIGNAL:
+		tbl.proc_signal.signal = tsk->signal;
+		tbl.proc_signal.blocked = tsk->blocked;
+		
+		collect_sigign_sigcatch (tsk, &tbl.proc_signal.ignored,
+					 &tbl.proc_signal.caught);
+		break;
+	case TABLE_PROC_MEM:
+		if (tsk->mm && tsk->mm != &init_mm) {
+			tbl.proc_mem.context = tsk->mm->context;
+			tbl.proc_mem.start_code = tsk->mm->start_code;
+			tbl.proc_mem.end_code = tsk->mm->end_code;
+			tbl.proc_mem.start_data = tsk->mm-> start_data;
+			tbl.proc_mem.end_data = tsk->mm->end_data;
+			tbl.proc_mem.start_brk = tsk->mm->start_brk;
+			tbl.proc_mem.brk = tsk->mm->brk;
+			tbl.proc_mem.start_stack = tsk->mm->start_stack;
+			tbl.proc_mem.start_mmap = tsk->mm->mmap ?
+				tsk->mm->mmap->vm_start : 0;
+			tbl.proc_mem.arg_start = tsk->mm->arg_start;
+			tbl.proc_mem.arg_end = tsk->mm->arg_end;
+			tbl.proc_mem.env_start = tsk->mm->env_start;
+			tbl.proc_mem.env_end = tsk->mm->env_end;
+			tbl.proc_mem.rss = tsk->mm->rss;
+			tbl.proc_mem.total_vm = tsk->mm->total_vm;
+			tbl.proc_mem.locked_vm = tsk->mm->locked_vm;
+		}
+		tbl.proc_mem.rlim = tsk->rlim ? tsk->rlim[RLIMIT_RSS].rlim_cur : 0;
+		break;
+	case TABLE_PROC_SEGMENT:
+		if (tsk->mm && tsk->mm != &init_mm) {
+			unsigned long vsize = 0;
+			int size = 0, resident = 0, share = 0;
+			int trs = 0, lrs = 0, drs = 0, dt = 0;
+			struct vm_area_struct * vma = tsk->mm->mmap;
+
+			while (vma) {
+				pgd_t *pgd = pgd_offset(tsk->mm, vma->vm_start);
+				int pages = 0, shared = 0, dirty = 0, total = 0;
+				
+				vsize += vma->vm_end - vma->vm_start;
+
+				statm_pgd_range (pgd, vma->vm_start, vma->vm_end,
+						 &pages, &shared, &dirty, &total);
+				resident += pages;
+				share += shared;
+				dt += dirty;
+				size += total;
+				if (vma->vm_flags & VM_EXECUTABLE)
+					trs += pages;	/* text */
+				else if (vma->vm_flags & VM_GROWSDOWN)
+					drs += pages;	/* stack */
+				else if (vma->vm_end > 0x60000000)
+					lrs += pages;	/* library */
+				else
+					drs += pages;
+				vma = vma->vm_next;
+			}
+
+			tbl.proc_segment.vsize = vsize;
+			tbl.proc_segment.size = size;
+			tbl.proc_segment.resident = resident;
+			tbl.proc_segment.shared = share;
+			tbl.proc_segment.trs = trs;
+			tbl.proc_segment.lrs = lrs;
+			tbl.proc_segment.dt = dt;
+		}
+		break;
+	case TABLE_PROC_TIME:
+		tbl.proc_time.utime = tsk->times.tms_utime;
+		tbl.proc_time.stime = tsk->times.tms_stime;
+		tbl.proc_time.cutime = tsk->times.tms_cutime;
+		tbl.proc_time.cstime = tsk->times.tms_cstime;
+
+		tbl.proc_time.start_time = tsk->start_time;
+		tbl.proc_time.timeout = tsk->timeout;
+		tbl.proc_time.policy = tsk->policy;
+		tbl.proc_time.rt_priority = tsk->rt_priority;
+
+		tbl.proc_time.it_real_value = tsk->it_real_value;
+		tbl.proc_time.it_prof_value = tsk->it_prof_value;
+		tbl.proc_time.it_virt_value = tsk->it_virt_value;
+		tbl.proc_time.it_real_incr = tsk->it_real_incr;
+		tbl.proc_time.it_prof_incr = tsk->it_prof_incr;
+		tbl.proc_time.it_virt_incr = tsk->it_virt_incr;
+		break;
+	case TABLE_PROC_KERNEL:
+		tbl.proc_kernel.min_flt = tsk->min_flt;
+		tbl.proc_kernel.cmin_flt = tsk->cmin_flt;
+		tbl.proc_kernel.maj_flt = tsk->maj_flt;
+		tbl.proc_kernel.cmaj_flt = tsk->cmaj_flt;
+		
+		tbl.proc_kernel.kesp = KSTK_EIP(tsk);
+		tbl.proc_kernel.keip = KSTK_ESP(tsk);
+		
+		tbl.proc_kernel.nswap = tsk->nswap;
+		tbl.proc_kernel.cnswap = tsk->cnswap;
+
+		tbl.proc_kernel.wchan = get_wchan (tsk);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	err = verify_area (VERIFY_WRITE, buf, sizeof (struct table));
+	if (err)
+		return err;
+
+	copy_to_user (buf, &tbl, sizeof (union table));
+
+	return 0;
+}

kernel/table21/table.h

@@ -0,0 +1,166 @@
+#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 */
+
+

kernel/table21/version.h

@@ -0,0 +1 @@
+#define _TABLE_VERSION	1