[PATCH 1/9] virtio_blk: eliminate anonymous module_init & module_exit

Randy Dunlap
2022-03-16T19:20:40Z

Eliminate anonymous module_init() and module_exit(), which can lead to
confusion or ambiguity when reading System.map, crashes/oops/bugs,
or an initcall_debug log.

Give each of these init and exit functions unique driver-specific
names to eliminate the anonymous names.

Example 1: (System.map)
ffffffff832fc78c t init
ffffffff832fc79e t init
ffffffff832fc8f8 t init

Example 2: (initcall_debug log)
calling init+0x0/0x12 @ 1
initcall init+0x0/0x12 returned 0 after 15 usecs
calling init+0x0/0x60 @ 1
initcall init+0x0/0x60 returned 0 after 2 usecs
calling init+0x0/0x9a @ 1
initcall init+0x0/0x9a returned 0 after 74 usecs

Fixes: e467cde23818 ("Block driver using virtio.")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
---
drivers/block/virtio_blk.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

--- lnx-517-rc8.orig/drivers/block/virtio_blk.c
+++ lnx-517-rc8/drivers/block/virtio_blk.c
@@ -1058,7 +1058,7 @@ static struct virtio_driver virtio_blk =
#endif
};

-static int __init init(void)
+static int __init virtio_blk_init(void)
{
int error;

@@ -1084,14 +1084,14 @@ out_destroy_workqueue:
return error;
}

-static void __exit fini(void)
+static void __exit virtio_blk_fini(void)
{
unregister_virtio_driver(&virtio_blk);
unregister_blkdev(major, "virtblk");
destroy_workqueue(virtblk_wq);
}
-module_init(init);
-module_exit(fini);
+module_init(virtio_blk_init);
+module_exit(virtio_blk_fini);

MODULE_DEVICE_TABLE(virtio, id_table);
MODULE_DESCRIPTION("Virtio block driver");