State of sg_proc_host_info and sg_proc_hoststrs_info

Hi Douglas,

do you know of any users that rely on these functions or rather the /proc file generated by them? I plan to rationalize and properly lock down handling of the scsi host list, and I'd prefer to have the replacement for scsi_host_get_next() not export to module (sg is the only user currently).

That means dropping this information from sg:

$ cd /proc/scsi/sg/
$ cat host_hdr hosts
uid     busy    cpl     scatg   isa     emul
0       0       3       64      0       0
0       0       5       256     0       1

$ cat host_strs
scsi_debug, Version: 1.64 (20021109), num_devs=9, dev_size_mb=8
SCSI host adapter emulation for IDE ATAPI devices

I put it in in lk 2.4 because the information was
hard to find from the user space. For example a
host (HBA) with no live devices on it was almost
invisible to the user space in lk 2.2

The "host_strs" stuff is available via an ioctl in the mid-level and is really per driver rather than per host. Hopefully sysfs will provide similar information. Will you leave the /proc/scsi/<driver_name>/host_no information?

The "hosts" stuff (i.e. the numeric data) was useful to me (at least). The "uid" column was a mistake but the rest was informative. Most of the data is static (apart from "busy").

So take it out (along with host_hdr) if it makes life easier for you.

Doug Gilbert