kernel/profile.c: Switch /proc/irq/prof_cpu_mask to seq_file

#ifdef CONFIG_PROC_FS

#include <linux/proc_fs.h>

#include <linux/seq_file.h>

#include <asm/uaccess.h>

static int prof_cpu_mask_read_proc(char *page, char **start, off_t off,

			int count, int *eof, void *data)

static int prof_cpu_mask_proc_show(struct seq_file *m, void *v)

{

	int len = cpumask_scnprintf(page, count, data);

	if (count - len < 2)

		return -EINVAL;

	len += sprintf(page + len, "\n");

	return len;

	seq_cpumask(m, prof_cpu_mask);

	seq_putc(m, '\n');

	return 0;

}

static int prof_cpu_mask_proc_open(struct inode *inode, struct file *file)

{

	return single_open(file, prof_cpu_mask_proc_show, NULL);

}

static int prof_cpu_mask_write_proc(struct file *file,

	const char __user *buffer,  unsigned long count, void *data)

static ssize_t prof_cpu_mask_proc_write(struct file *file,

	const char __user *buffer, size_t count, loff_t *pos)

{

	struct cpumask *mask = data;

	unsigned long full_count = count, err;

	cpumask_var_t new_value;

	int err;

	if (!alloc_cpumask_var(&new_value, GFP_KERNEL))

		return -ENOMEM;

	err = cpumask_parse_user(buffer, count, new_value);

	if (!err) {

		cpumask_copy(mask, new_value);

		err = full_count;

		cpumask_copy(prof_cpu_mask, new_value);

		err = count;

	}

	free_cpumask_var(new_value);

	return err;

}

static const struct file_operations prof_cpu_mask_proc_fops = {

	.open		= prof_cpu_mask_proc_open,

	.read		= seq_read,

	.llseek		= seq_lseek,

	.release	= single_release,

	.write		= prof_cpu_mask_proc_write,

};

void create_prof_cpu_mask(struct proc_dir_entry *root_irq_dir)

{

	struct proc_dir_entry *entry;

	/* create /proc/irq/prof_cpu_mask */

	entry = create_proc_entry("prof_cpu_mask", 0600, root_irq_dir);

	if (!entry)

		return;

	entry->data = prof_cpu_mask;

	entry->read_proc = prof_cpu_mask_read_proc;

	entry->write_proc = prof_cpu_mask_write_proc;

	proc_create("prof_cpu_mask", 0600, root_irq_dir, &prof_cpu_mask_proc_fops);

}

/*