mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
* [PATCH] staging: lustre: libcfs: use dynamic minors for /dev/{lnet, obd}
@ 2018-03-30 19:10 James Simmons
  2018-03-31  3:52 ` NeilBrown
  0 siblings, 1 reply; 2+ messages in thread
From: James Simmons @ 2018-03-30 19:10 UTC (permalink / raw)
  To: Greg Kroah-Hartman, devel, Andreas Dilger, Oleg Drokin, NeilBrown
  Cc: John L. Hammond, Linux Kernel Mailing List, Lustre Development List

From: "John L. Hammond" <john.hammond@intel.com>

Request dynamic minor allocation when registering /dev/lnet and
/dev/obd.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-100086
Reviewed-on: https://review.whamcloud.com/29741
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: NeilBrown <neilb@suse.com>
---
 drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h    |  1 -
 drivers/staging/lustre/include/uapi/linux/lnet/lnetctl.h      | 11 -----------
 .../staging/lustre/include/uapi/linux/lustre/lustre_ioctl.h   |  2 --
 drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c        |  1 -
 drivers/staging/lustre/lnet/libcfs/linux/linux-module.c       |  5 ++---
 drivers/staging/lustre/lnet/libcfs/module.c                   |  1 +
 drivers/staging/lustre/lustre/obdclass/class_obd.c            |  6 ++++--
 drivers/staging/lustre/lustre/obdclass/linux/linux-module.c   |  3 +--
 8 files changed, 8 insertions(+), 22 deletions(-)

diff --git a/drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h b/drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h
index 30e333a..cf4c606 100644
--- a/drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h
+++ b/drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h
@@ -50,7 +50,6 @@
 #include <linux/kernel.h>
 #include <linux/kmod.h>
 #include <linux/kthread.h>
-#include <linux/miscdevice.h>
 #include <linux/mm.h>
 #include <linux/mm_inline.h>
 #include <linux/module.h>
diff --git a/drivers/staging/lustre/include/uapi/linux/lnet/lnetctl.h b/drivers/staging/lustre/include/uapi/linux/lnet/lnetctl.h
index d9da625..cccb32d 100644
--- a/drivers/staging/lustre/include/uapi/linux/lnet/lnetctl.h
+++ b/drivers/staging/lustre/include/uapi/linux/lnet/lnetctl.h
@@ -119,16 +119,5 @@ struct lnet_fault_stat {
 
 #define LNET_DEV_ID 0
 #define LNET_DEV_PATH "/dev/lnet"
-#define LNET_DEV_MAJOR 10
-#define LNET_DEV_MINOR 240
-#define OBD_DEV_ID 1
-#define OBD_DEV_NAME "obd"
-#define OBD_DEV_PATH "/dev/" OBD_DEV_NAME
-#define OBD_DEV_MAJOR 10
-#define OBD_DEV_MINOR 241
-#define SMFS_DEV_ID  2
-#define SMFS_DEV_PATH "/dev/snapdev"
-#define SMFS_DEV_MAJOR 10
-#define SMFS_DEV_MINOR 242
 
 #endif
diff --git a/drivers/staging/lustre/include/uapi/linux/lustre/lustre_ioctl.h b/drivers/staging/lustre/include/uapi/linux/lustre/lustre_ioctl.h
index 9590864..6e4e109 100644
--- a/drivers/staging/lustre/include/uapi/linux/lustre/lustre_ioctl.h
+++ b/drivers/staging/lustre/include/uapi/linux/lustre/lustre_ioctl.h
@@ -51,8 +51,6 @@ enum md_echo_cmd {
 #define OBD_DEV_ID 1
 #define OBD_DEV_NAME "obd"
 #define OBD_DEV_PATH "/dev/" OBD_DEV_NAME
-#define OBD_DEV_MAJOR 10
-#define OBD_DEV_MINOR 241
 
 #define OBD_IOCTL_VERSION	0x00010004
 #define OBD_DEV_BY_DEVNAME	0xffffd0de
diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c
index 0092166..1d728f1 100644
--- a/drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c
+++ b/drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c
@@ -48,7 +48,6 @@
 #include <linux/completion.h>
 #include <linux/fs.h>
 #include <linux/uaccess.h>
-#include <linux/miscdevice.h>
 
 # define DEBUG_SUBSYSTEM S_LNET
 
diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-module.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-module.c
index ddf6256..c8908e8 100644
--- a/drivers/staging/lustre/lnet/libcfs/linux/linux-module.c
+++ b/drivers/staging/lustre/lnet/libcfs/linux/linux-module.c
@@ -33,10 +33,9 @@
 
 #define DEBUG_SUBSYSTEM S_LNET
 
+#include <linux/miscdevice.h>
 #include <linux/libcfs/libcfs.h>
 
-#define LNET_MINOR 240
-
 static inline size_t libcfs_ioctl_packlen(struct libcfs_ioctl_data *data)
 {
 	size_t len = sizeof(*data);
@@ -191,7 +190,7 @@ int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
 };
 
 struct miscdevice libcfs_dev = {
-	.minor = LNET_MINOR,
+	.minor = MISC_DYNAMIC_MINOR,
 	.name = "lnet",
 	.fops = &libcfs_fops,
 };
diff --git a/drivers/staging/lustre/lnet/libcfs/module.c b/drivers/staging/lustre/lnet/libcfs/module.c
index a03f924..4b9acd7 100644
--- a/drivers/staging/lustre/lnet/libcfs/module.c
+++ b/drivers/staging/lustre/lnet/libcfs/module.c
@@ -30,6 +30,7 @@
  * This file is part of Lustre, http://www.lustre.org/
  * Lustre is a trademark of Sun Microsystems, Inc.
  */
+#include <linux/miscdevice.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
diff --git a/drivers/staging/lustre/lustre/obdclass/class_obd.c b/drivers/staging/lustre/lustre/obdclass/class_obd.c
index 3e24b76..7b5be6b 100644
--- a/drivers/staging/lustre/lustre/obdclass/class_obd.c
+++ b/drivers/staging/lustre/lustre/obdclass/class_obd.c
@@ -32,7 +32,9 @@
  */
 
 #define DEBUG_SUBSYSTEM S_CLASS
-# include <linux/atomic.h>
+
+#include <linux/atomic.h>
+#include <linux/miscdevice.h>
 
 #include <obd_support.h>
 #include <obd_class.h>
@@ -462,7 +464,7 @@ static int __init obdclass_init(void)
 
 	err = misc_register(&obd_psdev);
 	if (err) {
-		CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
+		CERROR("cannot register OBD miscdevices: err %d\n", err);
 		return err;
 	}
 
diff --git a/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c b/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
index 7bceee7..3b1d096 100644
--- a/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
+++ b/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
@@ -42,7 +42,6 @@
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
-#include <linux/major.h>
 #include <linux/sched.h>
 #include <linux/lp.h>
 #include <linux/slab.h>
@@ -271,7 +270,7 @@ static long obd_class_ioctl(struct file *filp, unsigned int cmd,
 
 /* modules setup */
 struct miscdevice obd_psdev = {
-	.minor = OBD_DEV_MINOR,
+	.minor = MISC_DYNAMIC_MINOR,
 	.name  = OBD_DEV_NAME,
 	.fops  = &obd_psdev_fops,
 };
-- 
1.8.3.1

_______________________________________________
devel mailing list
devel@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel

^ permalink raw reply	[flat|nested] 2+ messages in thread
* Re: [PATCH] staging: lustre: libcfs: use dynamic minors for /dev/{lnet, obd}
  2018-03-30 19:10 [PATCH] staging: lustre: libcfs: use dynamic minors for /dev/{lnet, obd} James Simmons
@ 2018-03-31  3:52 ` NeilBrown
  0 siblings, 0 replies; 2+ messages in thread
From: NeilBrown @ 2018-03-31  3:52 UTC (permalink / raw)
  To: James Simmons, Greg Kroah-Hartman, devel, Andreas Dilger, Oleg Drokin
  Cc: John L. Hammond, Linux Kernel Mailing List, Lustre Development List


[-- Attachment #1.1: Type: text/plain, Size: 6785 bytes --]

On Fri, Mar 30 2018, James Simmons wrote:

> From: "John L. Hammond" <john.hammond@intel.com>
>
> Request dynamic minor allocation when registering /dev/lnet and
> /dev/obd.
>
> Signed-off-by: John L. Hammond <john.hammond@intel.com>
> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-100086
> Reviewed-on: https://review.whamcloud.com/29741
> Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
> Reviewed-by: Jian Yu <jian.yu@intel.com>
> Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
> Signed-off-by: James Simmons <jsimmons@infradead.org>

Yes, this is a much better fix than my kconfig change.

 Reviewed-by: NeilBrown <neilb@suse.com>

and thanks for your quick review on my last series!
Thanks,
NeilBrown


> ---
>  drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h    |  1 -
>  drivers/staging/lustre/include/uapi/linux/lnet/lnetctl.h      | 11 -----------
>  .../staging/lustre/include/uapi/linux/lustre/lustre_ioctl.h   |  2 --
>  drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c        |  1 -
>  drivers/staging/lustre/lnet/libcfs/linux/linux-module.c       |  5 ++---
>  drivers/staging/lustre/lnet/libcfs/module.c                   |  1 +
>  drivers/staging/lustre/lustre/obdclass/class_obd.c            |  6 ++++--
>  drivers/staging/lustre/lustre/obdclass/linux/linux-module.c   |  3 +--
>  8 files changed, 8 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h b/drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h
> index 30e333a..cf4c606 100644
> --- a/drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h
> +++ b/drivers/staging/lustre/include/linux/libcfs/linux/libcfs.h
> @@ -50,7 +50,6 @@
>  #include <linux/kernel.h>
>  #include <linux/kmod.h>
>  #include <linux/kthread.h>
> -#include <linux/miscdevice.h>
>  #include <linux/mm.h>
>  #include <linux/mm_inline.h>
>  #include <linux/module.h>
> diff --git a/drivers/staging/lustre/include/uapi/linux/lnet/lnetctl.h b/drivers/staging/lustre/include/uapi/linux/lnet/lnetctl.h
> index d9da625..cccb32d 100644
> --- a/drivers/staging/lustre/include/uapi/linux/lnet/lnetctl.h
> +++ b/drivers/staging/lustre/include/uapi/linux/lnet/lnetctl.h
> @@ -119,16 +119,5 @@ struct lnet_fault_stat {
>  
>  #define LNET_DEV_ID 0
>  #define LNET_DEV_PATH "/dev/lnet"
> -#define LNET_DEV_MAJOR 10
> -#define LNET_DEV_MINOR 240
> -#define OBD_DEV_ID 1
> -#define OBD_DEV_NAME "obd"
> -#define OBD_DEV_PATH "/dev/" OBD_DEV_NAME
> -#define OBD_DEV_MAJOR 10
> -#define OBD_DEV_MINOR 241
> -#define SMFS_DEV_ID  2
> -#define SMFS_DEV_PATH "/dev/snapdev"
> -#define SMFS_DEV_MAJOR 10
> -#define SMFS_DEV_MINOR 242
>  
>  #endif
> diff --git a/drivers/staging/lustre/include/uapi/linux/lustre/lustre_ioctl.h b/drivers/staging/lustre/include/uapi/linux/lustre/lustre_ioctl.h
> index 9590864..6e4e109 100644
> --- a/drivers/staging/lustre/include/uapi/linux/lustre/lustre_ioctl.h
> +++ b/drivers/staging/lustre/include/uapi/linux/lustre/lustre_ioctl.h
> @@ -51,8 +51,6 @@ enum md_echo_cmd {
>  #define OBD_DEV_ID 1
>  #define OBD_DEV_NAME "obd"
>  #define OBD_DEV_PATH "/dev/" OBD_DEV_NAME
> -#define OBD_DEV_MAJOR 10
> -#define OBD_DEV_MINOR 241
>  
>  #define OBD_IOCTL_VERSION	0x00010004
>  #define OBD_DEV_BY_DEVNAME	0xffffd0de
> diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c
> index 0092166..1d728f1 100644
> --- a/drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c
> +++ b/drivers/staging/lustre/lnet/libcfs/linux/linux-debug.c
> @@ -48,7 +48,6 @@
>  #include <linux/completion.h>
>  #include <linux/fs.h>
>  #include <linux/uaccess.h>
> -#include <linux/miscdevice.h>
>  
>  # define DEBUG_SUBSYSTEM S_LNET
>  
> diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-module.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-module.c
> index ddf6256..c8908e8 100644
> --- a/drivers/staging/lustre/lnet/libcfs/linux/linux-module.c
> +++ b/drivers/staging/lustre/lnet/libcfs/linux/linux-module.c
> @@ -33,10 +33,9 @@
>  
>  #define DEBUG_SUBSYSTEM S_LNET
>  
> +#include <linux/miscdevice.h>
>  #include <linux/libcfs/libcfs.h>
>  
> -#define LNET_MINOR 240
> -
>  static inline size_t libcfs_ioctl_packlen(struct libcfs_ioctl_data *data)
>  {
>  	size_t len = sizeof(*data);
> @@ -191,7 +190,7 @@ int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
>  };
>  
>  struct miscdevice libcfs_dev = {
> -	.minor = LNET_MINOR,
> +	.minor = MISC_DYNAMIC_MINOR,
>  	.name = "lnet",
>  	.fops = &libcfs_fops,
>  };
> diff --git a/drivers/staging/lustre/lnet/libcfs/module.c b/drivers/staging/lustre/lnet/libcfs/module.c
> index a03f924..4b9acd7 100644
> --- a/drivers/staging/lustre/lnet/libcfs/module.c
> +++ b/drivers/staging/lustre/lnet/libcfs/module.c
> @@ -30,6 +30,7 @@
>   * This file is part of Lustre, http://www.lustre.org/
>   * Lustre is a trademark of Sun Microsystems, Inc.
>   */
> +#include <linux/miscdevice.h>
>  #include <linux/module.h>
>  #include <linux/kernel.h>
>  #include <linux/mm.h>
> diff --git a/drivers/staging/lustre/lustre/obdclass/class_obd.c b/drivers/staging/lustre/lustre/obdclass/class_obd.c
> index 3e24b76..7b5be6b 100644
> --- a/drivers/staging/lustre/lustre/obdclass/class_obd.c
> +++ b/drivers/staging/lustre/lustre/obdclass/class_obd.c
> @@ -32,7 +32,9 @@
>   */
>  
>  #define DEBUG_SUBSYSTEM S_CLASS
> -# include <linux/atomic.h>
> +
> +#include <linux/atomic.h>
> +#include <linux/miscdevice.h>
>  
>  #include <obd_support.h>
>  #include <obd_class.h>
> @@ -462,7 +464,7 @@ static int __init obdclass_init(void)
>  
>  	err = misc_register(&obd_psdev);
>  	if (err) {
> -		CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
> +		CERROR("cannot register OBD miscdevices: err %d\n", err);
>  		return err;
>  	}
>  
> diff --git a/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c b/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
> index 7bceee7..3b1d096 100644
> --- a/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
> +++ b/drivers/staging/lustre/lustre/obdclass/linux/linux-module.c
> @@ -42,7 +42,6 @@
>  #include <linux/module.h>
>  #include <linux/errno.h>
>  #include <linux/kernel.h>
> -#include <linux/major.h>
>  #include <linux/sched.h>
>  #include <linux/lp.h>
>  #include <linux/slab.h>
> @@ -271,7 +270,7 @@ static long obd_class_ioctl(struct file *filp, unsigned int cmd,
>  
>  /* modules setup */
>  struct miscdevice obd_psdev = {
> -	.minor = OBD_DEV_MINOR,
> +	.minor = MISC_DYNAMIC_MINOR,
>  	.name  = OBD_DEV_NAME,
>  	.fops  = &obd_psdev_fops,
>  };
> -- 
> 1.8.3.1

[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 832 bytes --]

[-- Attachment #2: Type: text/plain, Size: 169 bytes --]

_______________________________________________
devel mailing list
devel@linuxdriverproject.org
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel

^ permalink raw reply	[flat|nested] 2+ messages in thread
end of thread, other threads:[~2018-03-31  3:52 UTC | newest]

Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-03-30 19:10 [PATCH] staging: lustre: libcfs: use dynamic minors for /dev/{lnet, obd} James Simmons
2018-03-31  3:52 ` NeilBrown

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®