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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2006-12-08 15:54:28 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-12-08 15:54:28 +0100 |
| commit | d7b5a4c94f49131811112526f7d404a50f0b5ca7 (patch) | |
| tree | 159cb6717e16339b821315c0bc6b17b6f5df5119 /drivers/s390/cio/css.h | |
| parent | [S390] subchannel lock conversion. (diff) | |
| download | linux-d7b5a4c94f49131811112526f7d404a50f0b5ca7.tar.xz linux-d7b5a4c94f49131811112526f7d404a50f0b5ca7.zip | |
[S390] Support for disconnected devices reappearing on another subchannel.
- create a 'pseudo_subchannel' per channel subsystem (the 'orphanage')
- use the orphanage as a shelter for ccw_devices that can't remain on the same
subchannel
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/css.h')
| -rw-r--r-- | drivers/s390/cio/css.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h index ac845c1ebf83..71fe380f86f6 100644 --- a/drivers/s390/cio/css.h +++ b/drivers/s390/cio/css.h @@ -160,6 +160,8 @@ struct channel_subsystem { int cm_enabled; void *cub_addr1; void *cub_addr2; + /* for orphaned ccw devices */ + struct subchannel *pseudo_subchannel; }; #define to_css(dev) container_of(dev, struct channel_subsystem, device) @@ -187,6 +189,8 @@ void css_clear_subchannel_slow_list(void); int css_slow_subchannels_exist(void); extern int need_rescan; +int sch_is_pseudo_sch(struct subchannel *); + extern struct workqueue_struct *slow_path_wq; extern struct work_struct slow_path_work; |