[PATCH] turn device_init() into an initcall

From: Alexander Viro (viro@math.psu.edu)
Date: Wed May 02 2001 - 20:21:34 EST


        Patch below turns device_init() into initcall. Current tree
calls it from fs/partitions/check.c::partitions_setup() - definitely
odd place for that stuff.

        Another thing done by partition_setup() is {init,}rd_load(). I.e.
setting the contents of /dev/ram0 from initrd or floppies. That beast
should be done after _all_ drivers' initialization, indeed - it belongs with
mount_root()/mount_devfs()/etc. I took it to main/init.c - that way
it's guaranteed to be called after all drivers initialization code and
that's where we do the rest of late-boot stuff. partition_setup() is gone
now.

        Patch is against 2.4.5-pre1. Please, apply.
                                                                Al

diff -urN S5-pre1/drivers/block/genhd.c S5-pre1-device_init/drivers/block/genhd.c
--- S5-pre1/drivers/block/genhd.c Fri Feb 16 18:37:04 2001
+++ S5-pre1-device_init/drivers/block/genhd.c Wed May 2 21:09:30 2001
@@ -31,7 +31,7 @@
 extern int cpqarray_init(void);
 extern void ieee1394_init(void);
 
-void __init device_init(void)
+int __init device_init(void)
 {
 #ifdef CONFIG_PARPORT
         parport_init();
@@ -64,4 +64,7 @@
 #ifdef CONFIG_VT
         console_map_init();
 #endif
+ return 0;
 }
+
+__initcall(device_init);
diff -urN S5-pre1/fs/partitions/check.c S5-pre1-device_init/fs/partitions/check.c
--- S5-pre1/fs/partitions/check.c Thu Feb 22 06:45:26 2001
+++ S5-pre1-device_init/fs/partitions/check.c Wed May 2 21:09:30 2001
@@ -33,10 +33,7 @@
 #include "ibm.h"
 #include "ultrix.h"
 
-extern void device_init(void);
 extern int *blk_size[];
-extern void rd_load(void);
-extern void initrd_load(void);
 
 struct gendisk *gendisk_head;
 int warn_no_part = 1; /*This is ugly: should make genhd removable media aware*/
@@ -438,19 +435,3 @@
                 blk_size[dev->major] = dev->sizes;
         }
 }
-
-int __init partition_setup(void)
-{
- device_init();
-
-#ifdef CONFIG_BLK_DEV_RAM
-#ifdef CONFIG_BLK_DEV_INITRD
- if (initrd_start && mount_initrd) initrd_load();
- else
-#endif
- rd_load();
-#endif
- return 0;
-}
-
-__initcall(partition_setup);
diff -urN S5-pre1/init/main.c S5-pre1-device_init/init/main.c
--- S5-pre1/init/main.c Wed May 2 11:16:38 2001
+++ S5-pre1-device_init/init/main.c Wed May 2 21:09:30 2001
@@ -638,9 +638,6 @@
  */
 static void __init do_basic_setup(void)
 {
-#ifdef CONFIG_BLK_DEV_INITRD
- int real_root_mountflags;
-#endif
 
         /*
          * Tell the world that we're going to be the grim
@@ -707,13 +704,6 @@
         /* Networking initialization needs a process context */
         sock_init();
 
-#ifdef CONFIG_BLK_DEV_INITRD
- real_root_dev = ROOT_DEV;
- real_root_mountflags = root_mountflags;
- if (initrd_start && mount_initrd) root_mountflags &= ~MS_RDONLY;
- else mount_initrd =0;
-#endif
-
         start_context_thread();
         do_initcalls();
 
@@ -724,6 +714,33 @@
 #ifdef CONFIG_PCMCIA
         init_pcmcia_ds(); /* Do this last */
 #endif
+}
+
+extern void rd_load(void);
+extern void initrd_load(void);
+
+/*
+ * Prepare the namespace - decide what/where to mount, load ramdisks, etc.
+ */
+static void prepare_namespace(void)
+{
+#ifdef CONFIG_BLK_DEV_INITRD
+ int real_root_mountflags = ROOT_DEV;
+ real_root_mountflags = root_mountflags;
+ if (!initrd_start)
+ mount_initrd = 0;
+ if (mount_initrd)
+ root_mountflags &= ~MS_RDONLY;
+#endif
+
+#ifdef CONFIG_BLK_DEV_RAM
+#ifdef CONFIG_BLK_DEV_INITRD
+ if (mount_initrd)
+ initrd_load();
+ else
+#endif
+ rd_load();
+#endif
 
         /* Mount the root filesystem.. */
         mount_root();
@@ -755,6 +772,8 @@
 {
         lock_kernel();
         do_basic_setup();
+
+ prepare_namespace();
 
         /*
          * Ok, we have completed the initial bootup, and

-
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This archive was generated by hypermail 2b29 : Mon May 07 2001 - 21:00:15 EST