Hi All,
I'm trying to compile the kernel module below with the following command
line and get the following warnings. Is there anyway to get rid of them?
thanks
mick
gcc -Wall -Wstrict-prototypes -Winline -O2 -fomit-frame-pointer
-fno-strict-aliasing -I/usr/src/linux/include -c mymod.c -o mymod.o
In file included from /usr/src/linux/include/linux/mm.h:4,
from /usr/src/linux/include/linux/slab.h:14,
from /usr/src/linux/include/linux/proc_fs.h:5,
from mymod.c:6:
/usr/src/linux/include/linux/sched.h: In function `mmdrop':
/usr/src/linux/include/linux/sched.h:754: warning: can't inline call to
`__mmdrop'
/usr/src/linux/include/linux/sched.h:758: warning: called from here
#define __KERNEL__
#define MODULE
#include <linux/module.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
MODULE_AUTHOR("Michael Covi");
MODULE_DESCRIPTION("Fun with modules Part 1");
MODULE_LICENSE("GPL");
static struct proc_dir_entry* myproc;
static int read_proc_mymod(char *page, char **start, off_t off,
int count, int *eof, void *data) {
MOD_DEC_USE_COUNT;
return 0;
}
static int write_proc_mymod(struct file *file, const char *buffer,
unsigned long count, void *data) {
static int i = 0;
i++;
printk("write_proc_mymod called %d times\n", i);
printk("In the buffer was %s\n", buffer);
printk("The count was %d\n", (int)count);
printk("The data was %s \n", (char*)data);
MOD_INC_USE_COUNT;
return count;
}
static void __init fini(void) {
if (myproc != NULL)
remove_proc_entry("mymod", NULL);
printk("Howdy, we've cleaned up the module\n");
}
static int __init init(void) {
printk("Howdy, were initialising the module\n");
myproc = create_proc_entry("mymod", 0644, NULL);
if (myproc == NULL) {
printk(KERN_CRIT "Error registering procfs entry mymod\n");
fini();
}
myproc->read_proc = read_proc_mymod;
myproc->write_proc = write_proc_mymod;
return 0;
}
module_init(init);
module_exit(fini);
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