5ea22086ed
In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. This refactors the discover_timer to remove the needless locking and state machine used for synchronizing timer death. Using del_timer_sync() will already do the right thing. Cc: Jens Axboe <axboe@kernel.dk> Cc: "Ed L. Cashin" <ed.cashin@acm.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Kees Cook <keescook@chromium.org>
88 lines
1.6 KiB
C
88 lines
1.6 KiB
C
/* Copyright (c) 2012 Coraid, Inc. See COPYING for GPL terms. */
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/*
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* aoemain.c
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* Module initialization routines, discover timer
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*/
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#include <linux/hdreg.h>
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#include <linux/blkdev.h>
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#include <linux/module.h>
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#include <linux/skbuff.h>
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#include "aoe.h"
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Sam Hopkins <sah@coraid.com>");
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MODULE_DESCRIPTION("AoE block/char driver for 2.6.2 and newer 2.6 kernels");
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MODULE_VERSION(VERSION);
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static struct timer_list timer;
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static void discover_timer(struct timer_list *t)
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{
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mod_timer(t, jiffies + HZ * 60); /* one minute */
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aoecmd_cfg(0xffff, 0xff);
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}
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static void
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aoe_exit(void)
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{
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del_timer_sync(&timer);
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aoenet_exit();
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unregister_blkdev(AOE_MAJOR, DEVICE_NAME);
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aoecmd_exit();
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aoechr_exit();
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aoedev_exit();
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aoeblk_exit(); /* free cache after de-allocating bufs */
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}
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static int __init
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aoe_init(void)
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{
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int ret;
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ret = aoedev_init();
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if (ret)
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return ret;
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ret = aoechr_init();
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if (ret)
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goto chr_fail;
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ret = aoeblk_init();
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if (ret)
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goto blk_fail;
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ret = aoenet_init();
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if (ret)
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goto net_fail;
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ret = aoecmd_init();
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if (ret)
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goto cmd_fail;
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ret = register_blkdev(AOE_MAJOR, DEVICE_NAME);
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if (ret < 0) {
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printk(KERN_ERR "aoe: can't register major\n");
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goto blkreg_fail;
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}
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printk(KERN_INFO "aoe: AoE v%s initialised.\n", VERSION);
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timer_setup(&timer, discover_timer, 0);
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discover_timer(&timer);
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return 0;
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blkreg_fail:
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aoecmd_exit();
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cmd_fail:
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aoenet_exit();
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net_fail:
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aoeblk_exit();
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blk_fail:
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aoechr_exit();
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chr_fail:
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aoedev_exit();
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printk(KERN_INFO "aoe: initialisation failure.\n");
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return ret;
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}
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module_init(aoe_init);
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module_exit(aoe_exit);
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