linux-toradex.git/drivers/scsi/scsi_proc.c, branch v4.9.11

scsi: disable automatic target scan

2016-04-11T20:57:09+00:00

On larger installations it is useful to disable automatic LUN scanning,
and only add the required LUNs via udev rules.  This can speed up bootup
dramatically.

This patch introduces a new scan module parameter value 'manual', which
works like 'none', but can be overridden by setting the 'rescan' value
from scsi_scan_target to 'SCSI_SCAN_MANUAL'.  And it updates all
relevant callers to set the 'rescan' value to 'SCSI_SCAN_MANUAL' if
invoked via the 'scan' option in sysfs.

Signed-off-by: Hannes Reinecke 
Reviewed-by: Ewan D. Milne 
Tested-by: Laurence Oberman 
Signed-off-by: Martin K. Petersen

scsi: print single-character strings with seq_putc

2015-02-02T17:57:46+00:00

Using seq_putc to print a single character saves at least a strlen()
call and a memory access, and may also give a small .text reduction.

Signed-off-by: Rasmus Villemoes 
Reviewed-by: Finn Thain 
Signed-off-by: Christoph Hellwig

scsi: replace seq_printf with seq_puts

2015-02-02T17:57:45+00:00

Using seq_printf to print a simple string is a lot more expensive than
it needs to be, since seq_puts exists. Replace seq_printf with
seq_puts when possible.

Signed-off-by: Rasmus Villemoes 
Reviewed-by: Finn Thain 
Signed-off-by: Christoph Hellwig

scsi: use 64-bit LUNs

2014-07-17T20:07:37+00:00

The SCSI standard defines 64-bit values for LUNs, and large arrays
employing large or hierarchical LUN numbers become more and more
common.

So update the linux SCSI stack to use 64-bit LUN numbers.

Signed-off-by: Hannes Reinecke 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Ewan Milne 
Signed-off-by: Christoph Hellwig

fix buffer leak after "scsi: saner replacements for ->proc_info()"

2013-05-31T19:16:51+00:00

That patch failed to set proc_scsi_fops' .release method.

Signed-off-by: Jan Beulich 
Signed-off-by: Al Viro

procfs: new helper - PDE_DATA(inode)

2013-04-09T18:13:32+00:00

The only part of proc_dir_entry the code outside of fs/proc
really cares about is PDE(inode)->data.  Provide a helper
for that; static inline for now, eventually will be moved
to fs/proc, along with the knowledge of struct proc_dir_entry
layout.

Signed-off-by: Al Viro

scsi_proc: make proc_scsi_host_open() preallocate a bigger buffer

2013-04-09T18:13:30+00:00

Some of the ->show_info() instances really spew a lot; it's not a problem
wrt correctness (seq_read() will grow buffer and call the sucker again),
but in this case it makes sense to start with a somewhat bigger one -
they often do exceed one page worth of output.

Signed-off-by: Al Viro

scsi: bury ->proc_info()

2013-04-09T18:13:29+00:00

all users converted to ->show_info()/->write_info()

Signed-off-by: Al Viro

scsi: saner replacements for ->proc_info()

2013-04-09T18:13:14+00:00

It's still an obsolete interface; don't introduce those in new drivers.
However, it's saner than the ->proc_info() and commits after this one
will convert the existing ->proc_info() users to it.

The read side is ->show_info(seq_file *, struct Scsi_Host *); use
seq_... for generating contents.

The write side is ->write_info(struct Scsi_Host *, char *, int).

Again, this is driven by procfs needs; we are going to kill ->write_proc()
and ->read_proc() and this is the main obstacle to burying that piece of
shit.

Signed-off-by: Al Viro

scsi: fix scsi_proc new kernel-doc warning

2011-05-29T06:12:11+00:00

Fix kernel-doc warnings in scsi_proc.c:

  Warning(drivers/scsi/scsi_proc.c:390): No description found for parameter 'dev'
  Warning(drivers/scsi/scsi_proc.c:390): No description found for parameter 'data'
  Warning(drivers/scsi/scsi_proc.c:390): Excess function parameter 's' description in 'always_match'
  Warning(drivers/scsi/scsi_proc.c:390): Excess function parameter 'p' description in 'always_match'

Signed-off-by: Randy Dunlap 
Signed-off-by: Linus Torvalds