proc: mem_release() should check mm != NULL
[pandora-kernel.git] / fs / proc / softirqs.c
1 #include <linux/init.h>
2 #include <linux/kernel_stat.h>
3 #include <linux/proc_fs.h>
4 #include <linux/seq_file.h>
5
6 /*
7  * /proc/softirqs  ... display the number of softirqs
8  */
9 static int show_softirqs(struct seq_file *p, void *v)
10 {
11         int i, j;
12
13         seq_puts(p, "                    ");
14         for_each_possible_cpu(i)
15                 seq_printf(p, "CPU%-8d", i);
16         seq_putc(p, '\n');
17
18         for (i = 0; i < NR_SOFTIRQS; i++) {
19                 seq_printf(p, "%12s:", softirq_to_name[i]);
20                 for_each_possible_cpu(j)
21                         seq_printf(p, " %10u", kstat_softirqs_cpu(i, j));
22                 seq_putc(p, '\n');
23         }
24         return 0;
25 }
26
27 static int softirqs_open(struct inode *inode, struct file *file)
28 {
29         return single_open(file, show_softirqs, NULL);
30 }
31
32 static const struct file_operations proc_softirqs_operations = {
33         .open           = softirqs_open,
34         .read           = seq_read,
35         .llseek         = seq_lseek,
36         .release        = single_release,
37 };
38
39 static int __init proc_softirqs_init(void)
40 {
41         proc_create("softirqs", 0, NULL, &proc_softirqs_operations);
42         return 0;
43 }
44 module_init(proc_softirqs_init);