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Diffstat (limited to 'arch/arm/kernel/swp_emulate.c')
-rw-r--r--arch/arm/kernel/swp_emulate.c42
1 files changed, 19 insertions, 23 deletions
diff --git a/arch/arm/kernel/swp_emulate.c b/arch/arm/kernel/swp_emulate.c
index 0bba47ada5b..087fc321e9e 100644
--- a/arch/arm/kernel/swp_emulate.c
+++ b/arch/arm/kernel/swp_emulate.c
@@ -21,6 +21,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
#include <linux/sched.h>
#include <linux/syscalls.h>
#include <linux/perf_event.h>
@@ -79,27 +80,27 @@ static unsigned long abtcounter;
static pid_t previous_pid;
#ifdef CONFIG_PROC_FS
-static int proc_read_status(char *page, char **start, off_t off, int count,
- int *eof, void *data)
+static int proc_status_show(struct seq_file *m, void *v)
{
- char *p = page;
- int len;
-
- p += sprintf(p, "Emulated SWP:\t\t%lu\n", swpcounter);
- p += sprintf(p, "Emulated SWPB:\t\t%lu\n", swpbcounter);
- p += sprintf(p, "Aborted SWP{B}:\t\t%lu\n", abtcounter);
+ seq_printf(m, "Emulated SWP:\t\t%lu\n", swpcounter);
+ seq_printf(m, "Emulated SWPB:\t\t%lu\n", swpbcounter);
+ seq_printf(m, "Aborted SWP{B}:\t\t%lu\n", abtcounter);
if (previous_pid != 0)
- p += sprintf(p, "Last process:\t\t%d\n", previous_pid);
-
- len = (p - page) - off;
- if (len < 0)
- len = 0;
-
- *eof = (len <= count) ? 1 : 0;
- *start = page + off;
+ seq_printf(m, "Last process:\t\t%d\n", previous_pid);
+ return 0;
+}
- return len;
+static int proc_status_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, proc_status_show, PDE_DATA(inode));
}
+
+static const struct file_operations proc_status_fops = {
+ .open = proc_status_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
#endif
/*
@@ -266,12 +267,7 @@ static struct undef_hook swp_hook = {
static int __init swp_emulation_init(void)
{
#ifdef CONFIG_PROC_FS
- struct proc_dir_entry *res;
-
- res = create_proc_read_entry("cpu/swp_emulation", S_IRUGO, NULL,
- proc_read_status, NULL);
-
- if (!res)
+ if (!proc_create("cpu/swp_emulation", S_IRUGO, NULL, &proc_status_fops))
return -ENOMEM;
#endif /* CONFIG_PROC_FS */