mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-17 01:34:00 +08:00
abaf3787ac
PROC_FS is a bool, so this code is either present or absent. It will never be modular, so using module_init as an alias for __initcall is rather misleading. Fix this up now, so that we can relocate module_init from init.h into module.h in the future. If we don't do this, we'd have to add module.h to obviously non-modular code, and that would be ugly at best. Note that direct use of __initcall is discouraged, vs. one of the priority categorized subgroups. As __initcall gets mapped onto device_initcall, our use of fs_initcall (which makes sense for fs code) will thus change these registrations from level 6-device to level 5-fs (i.e. slightly earlier). However no observable impact of that small difference has been observed during testing, or is expected. Also note that this change uncovers a missing semicolon bug in the registration of vmcore_init as an initcall. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
#include <linux/fs.h>
|
|
#include <linux/init.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/seq_file.h>
|
|
|
|
static int devinfo_show(struct seq_file *f, void *v)
|
|
{
|
|
int i = *(loff_t *) v;
|
|
|
|
if (i < CHRDEV_MAJOR_HASH_SIZE) {
|
|
if (i == 0)
|
|
seq_puts(f, "Character devices:\n");
|
|
chrdev_show(f, i);
|
|
}
|
|
#ifdef CONFIG_BLOCK
|
|
else {
|
|
i -= CHRDEV_MAJOR_HASH_SIZE;
|
|
if (i == 0)
|
|
seq_puts(f, "\nBlock devices:\n");
|
|
blkdev_show(f, i);
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
static void *devinfo_start(struct seq_file *f, loff_t *pos)
|
|
{
|
|
if (*pos < (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
|
|
return pos;
|
|
return NULL;
|
|
}
|
|
|
|
static void *devinfo_next(struct seq_file *f, void *v, loff_t *pos)
|
|
{
|
|
(*pos)++;
|
|
if (*pos >= (BLKDEV_MAJOR_HASH_SIZE + CHRDEV_MAJOR_HASH_SIZE))
|
|
return NULL;
|
|
return pos;
|
|
}
|
|
|
|
static void devinfo_stop(struct seq_file *f, void *v)
|
|
{
|
|
/* Nothing to do */
|
|
}
|
|
|
|
static const struct seq_operations devinfo_ops = {
|
|
.start = devinfo_start,
|
|
.next = devinfo_next,
|
|
.stop = devinfo_stop,
|
|
.show = devinfo_show
|
|
};
|
|
|
|
static int devinfo_open(struct inode *inode, struct file *filp)
|
|
{
|
|
return seq_open(filp, &devinfo_ops);
|
|
}
|
|
|
|
static const struct file_operations proc_devinfo_operations = {
|
|
.open = devinfo_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|
|
|
|
static int __init proc_devices_init(void)
|
|
{
|
|
proc_create("devices", 0, NULL, &proc_devinfo_operations);
|
|
return 0;
|
|
}
|
|
fs_initcall(proc_devices_init);
|