Commit 3664ff82 authored by Yangtao Li's avatar Yangtao Li Committed by Mike Snitzer
Browse files

dm: add helper macro for simple DM target module init and exit 



Eliminate duplicate boilerplate code for simple modules that contain
a single DM target driver without any additional setup code.

Add a new module_dm() macro, which replaces the module_init() and
module_exit() with template functions that call dm_register_target()
and dm_unregister_target() respectively.

Signed-off-by: default avatarYangtao Li <frank.li@vivo.com>
Signed-off-by: default avatarMike Snitzer <snitzer@kernel.org>
parent 306fbc2e

drivers/md/dm-crypt.c

+1 −13
Original line number Diff line number Diff line
@@ -3659,19 +3659,7 @@ static struct target_type crypt_target = { 
	.iterate_devices = crypt_iterate_devices,

	.io_hints = crypt_io_hints,

};



static int __init dm_crypt_init(void)

{

	return dm_register_target(&crypt_target);

}



static void __exit dm_crypt_exit(void)

{

	dm_unregister_target(&crypt_target);

}



module_init(dm_crypt_init);

module_exit(dm_crypt_exit);

module_dm(crypt);



MODULE_AUTHOR("Jana Saout <jana@saout.de>");

MODULE_DESCRIPTION(DM_NAME " target for transparent encryption / decryption");

drivers/md/dm-delay.c

+1 −14
Original line number Diff line number Diff line
@@ -367,20 +367,7 @@ static struct target_type delay_target = { 
	.status	     = delay_status,

	.iterate_devices = delay_iterate_devices,

};



static int __init dm_delay_init(void)

{

	return dm_register_target(&delay_target);

}



static void __exit dm_delay_exit(void)

{

	dm_unregister_target(&delay_target);

}



/* Module hooks */

module_init(dm_delay_init);

module_exit(dm_delay_exit);

module_dm(delay);



MODULE_DESCRIPTION(DM_NAME " delay target");

MODULE_AUTHOR("Heinz Mauelshagen <mauelshagen@redhat.com>");

drivers/md/dm-dust.c

+1 −13
Original line number Diff line number Diff line
@@ -570,19 +570,7 @@ static struct target_type dust_target = { 
	.status = dust_status,

	.prepare_ioctl = dust_prepare_ioctl,

};



static int __init dm_dust_init(void)

{

	return dm_register_target(&dust_target);

}



static void __exit dm_dust_exit(void)

{

	dm_unregister_target(&dust_target);

}



module_init(dm_dust_init);

module_exit(dm_dust_exit);

module_dm(dust);



MODULE_DESCRIPTION(DM_NAME " dust test target");

MODULE_AUTHOR("Bryan Gurney <dm-devel@redhat.com>");

drivers/md/dm-ebs-target.c

+1 −13
Original line number Diff line number Diff line
@@ -452,19 +452,7 @@ static struct target_type ebs_target = { 
	.prepare_ioctl	 = ebs_prepare_ioctl,

	.iterate_devices = ebs_iterate_devices,

};



static int __init dm_ebs_init(void)

{

	return dm_register_target(&ebs_target);

}



static void dm_ebs_exit(void)

{

	dm_unregister_target(&ebs_target);

}



module_init(dm_ebs_init);

module_exit(dm_ebs_exit);

module_dm(ebs);



MODULE_AUTHOR("Heinz Mauelshagen <dm-devel@redhat.com>");

MODULE_DESCRIPTION(DM_NAME " emulated block size target");

drivers/md/dm-era-target.c

+1 −13
Original line number Diff line number Diff line
@@ -1753,19 +1753,7 @@ static struct target_type era_target = { 
	.iterate_devices = era_iterate_devices,

	.io_hints = era_io_hints

};



static int __init dm_era_init(void)

{

	return dm_register_target(&era_target);

}



static void __exit dm_era_exit(void)

{

	dm_unregister_target(&era_target);

}



module_init(dm_era_init);

module_exit(dm_era_exit);

module_dm(era);



MODULE_DESCRIPTION(DM_NAME " era target");

MODULE_AUTHOR("Joe Thornber <ejt@redhat.com>");