lkml.org 
[lkml]   [2002]   [Apr]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From"Wanghong Yuan" <>
SubjectHow to enable printk
DateMon, 29 Apr 2002 00:20:11 -0500
Hi,

It may be a simple question. But I cannot see the result of printk in
console like the following. Do i need to enable it somewhere? Thanks

/*-O2 -Wall -DMODULE -D__KERNEL__ -DLINUX -c testsys.c */
#include <linux/sys.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <sys/syscall.h>
#include <asm/uaccess.h>


/* The system call number we attempt to install ourselves as. */
static int syscall_num = 165;
asmlinkage int sys_test(int pid, int period, int cycles, int* ptr)

{
put_user(current->pid, ptr);
return pid-10000;
}
extern int sys_call_table[];

#ifdef MODULE
int init_module(void)
{
printk("yes\n");
sys_call_table[syscall_num] = (int)sys_test;
return 0;
}
void cleanup_module(void)
{
sys_call_table[syscall_num] = 0;
}
#endif /* MODULE */

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:25    [from the cache]
©2003-2010