The patch titled
fb: convert /proc/fb to seq_file interface
has been added to the -mm tree. Its filename is
fb-convert-proc-fb-to-seq_file-interface.patch
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See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: fb: convert /proc/fb to seq_file interface
From: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Note: looks like accesses to "registered_fb" are done without any exclusion
so there're none in new proc code, too. This should be fixed in separate
patch.
Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: "Antonino A. Daplas" <adaplas@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/fbmem.c | 61 ++++++++++++++++++++++++++++------------
1 file changed, 43 insertions(+), 18 deletions(-)
diff -puN drivers/video/fbmem.c~fb-convert-proc-fb-to-seq_file-interface drivers/video/fbmem.c
--- a/drivers/video/fbmem.c~fb-convert-proc-fb-to-seq_file-interface
+++ a/drivers/video/fbmem.c
@@ -26,6 +26,7 @@
#include <linux/init.h>
#include <linux/linux_logo.h>
#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
#include <linux/console.h>
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
@@ -632,27 +633,51 @@ int fb_prepare_logo(struct fb_info *info
int fb_show_logo(struct fb_info *info, int rotate) { return 0; }
#endif /* CONFIG_LOGO */
-static int fbmem_read_proc(char *buf, char **start, off_t offset,
- int len, int *eof, void *private)
+static void * fb_seq_start(struct seq_file *m, loff_t *pos)
{
- struct fb_info **fi;
- int clen;
+ return (*pos < FB_MAX) ? pos : NULL;
+}
- clen = 0;
- for (fi = registered_fb; fi < ®istered_fb[FB_MAX] && clen < 4000;
- fi++)
- if (*fi)
- clen += sprintf(buf + clen, "%d %s\n",
- (*fi)->node,
- (*fi)->fix.id);
- *start = buf + offset;
- if (clen > offset)
- clen -= offset;
- else
- clen = 0;
- return clen < len ? clen : len;
+static void * fb_seq_next(struct seq_file *m, void *v, loff_t *pos)
+{
+ (*pos)++;
+ return (*pos < FB_MAX) ? pos : NULL;
+}
+
+static void fb_seq_stop(struct seq_file *m, void *v)
+{
+}
+
+static int fb_seq_show(struct seq_file *m, void *v)
+{
+ int i = *(loff_t *)v;
+ struct fb_info *fi = registered_fb[i];
+
+ if (fi)
+ seq_printf(m, "%d %s\n", fi->node, fi->fix.id);
+ return 0;
}
+static const struct seq_operations proc_fb_seq_ops = {
+ .start = fb_seq_start,
+ .next = fb_seq_next,
+ .stop = fb_seq_stop,
+ .show = fb_seq_show,
+};
+
+static int proc_fb_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &proc_fb_seq_ops);
+}
+
+static const struct file_operations fb_proc_fops = {
+ .owner = THIS_MODULE,
+ .open = proc_fb_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
static ssize_t
fb_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
{
@@ -1533,7 +1558,7 @@ void fb_set_suspend(struct fb_info *info
static int __init
fbmem_init(void)
{
- create_proc_read_entry("fb", 0, NULL, fbmem_read_proc, NULL);
+ proc_create("fb", 0, NULL, &fb_proc_fops);
if (register_chrdev(FB_MAJOR,"fb",&fb_fops))
printk("unable to get major %d for fb devs\n", FB_MAJOR);
_
Patches currently in -mm which might be from adobriyan@xxxxxxxxx are
fbdev-fix-proc-fb-oops-after-module-removal.patch
v4l-fix-concurrent-read-from-proc-videocodecs.patch
tags-add-menuconfig-symbols-as-well.patch
mpt-remove-unused-struct-mpt_proc_entry_t.patch
remove-the-macro-get_personality.patch
nv-drop-useless-module-ifdefs.patch
nv-drop-useless-config_pci-checks.patch
nv-fix-sparse-noise.patch
fb-convert-proc-fb-to-seq_file-interface.patch
ipmi-remove-write_proc-code.patch
procfs-mem-permission-cleanup.patch
proc-simplify-locking-in-remove_proc_entry.patch
proc-less-special-case-in-xlate-code.patch
proc-drop-several-pde-valid-invalid-checks.patch
proc-remove-proc_bus.patch
proc-remove-proc_root_fs.patch
proc-remove-proc_root_driver.patch
proc-remove-proc_root-from-drivers.patch
likely_prof-changed-to-use-proc_create.patch
proc-remove-proc_root-from-drivers-likelyprof.patch
--
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