diff --git a/arch/arm/kernel/swp_emulate.c b/arch/arm/kernel/swp_emulate.c index 0bba47ada5bd..087fc321e9e5 100644 --- a/arch/arm/kernel/swp_emulate.c +++ b/arch/arm/kernel/swp_emulate.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -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; - - return len; + seq_printf(m, "Last process:\t\t%d\n", previous_pid); + return 0; } + +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 */