linux-toradex.git/drivers/scsi/scsi_debug.c, branch v4.10

ktime: Cleanup ktime_set() usage

2016-12-25T16:21:22+00:00

ktime_set(S,N) was required for the timespec storage type and is still
useful for situations where a Seconds and Nanoseconds part of a time value
needs to be converted. For anything where the Seconds argument is 0, this
is pointless and can be replaced with a simple assignment.

Signed-off-by: Thomas Gleixner 
Cc: Peter Zijlstra

scsi: scsi_debug: Fix memory leak if LBP enabled and module is unloaded

2016-10-27T02:14:50+00:00

map_storep was not being vfree()'d in the module_exit call.

Cc: 
Signed-off-by: Ewan D. Milne 
Reviewed-by: Laurence Oberman 
Signed-off-by: Martin K. Petersen

scsi: sd: Move DIF protection types to t10-pi.h

2016-09-15T13:51:14+00:00

These should go together with the rest of the T10 protection information
defintions.

[mkp: s/T10_DIF/T10_PI/]

Signed-off-by: Christoph Hellwig 
Reviewed-by: Bart Van Assche 
Signed-off-by: Martin K. Petersen

scsi: scsi_debug: Use struct t10_pi_tuple instead of struct sd_dif_tuple

2016-09-15T13:41:09+00:00

And remove the declaration of the latter in sd.h as scsi_debug was the
only user.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Bart Van Assche 
Signed-off-by: Martin K. Petersen

scsi_debug: fix sleep in invalid context

2016-07-13T03:16:31+00:00

In this post: http://www.spinics.net/lists/linux-scsi/msg97124.html the
author shows some kernel infrastructure complaining about a sleep in an
invalid context. Remove offending call to vmalloc().  Instead of using
kzalloc() which reviewers didn't like, use a bucket system (64 bytes on
the stack) and potentially multiple calls to sg_pcopy_from_buffer() to
construct the 'data-in' buffer for the SCSI REPORT LUNS command.

Signed-off-by: Douglas Gilbert 
Acked-by: Christoph Hellwig 
Reviewed-by: Bart Van Assche 
Signed-off-by: Martin K. Petersen

scsi_debug: use locally assigned naa

2016-05-11T01:26:14+00:00

For reported SAS addresses replace fake IEEE registered NAAs (5) with
locally assigned NAAs (3).

Signed-off-by: Douglas Gilbert 
Reviewed-by: Hannes Reinecke 
Reviewed-by: Bart Van Assche 
Signed-off-by: Martin K. Petersen

scsi_debug: uuid for lu name

2016-05-11T01:25:34+00:00

Permit changing of a LU name from a (fake) IEEE registered NAA (5) to a
locally assigned UUID. Using a UUID (RFC 4122) for a SCSI designation
descriptor (e.g. a LU name) was added in spc5r08.pdf (a draft INCITS
standard) on 25 January 2016. Add parameter uuid_ctl to use a separate
UUID for each LU (storage device) name.  Additional option for all LU
names to have the same UUID (since their storage is shared). Previous
action of using NAA identifier for LU name remains the default.

Signed-off-by: Douglas Gilbert 
Reviewed-by: Hannes Reinecke 
Reviewed-by: Bart Van Assche 
Signed-off-by: Martin K. Petersen

scsi_debug: vpd and mode page work

2016-05-11T01:24:00+00:00

Cleanup some mode and vpd pages. Stop reporting SBC (disk) pages when
peripheral type is something else (e.g. tape). Update version
descriptors. Expand LBPRZ flag handling.

Signed-off-by: Douglas Gilbert 
Reviewed-by: Hannes Reinecke 
Reviewed-by: Bart Van Assche 
Signed-off-by: Martin K. Petersen

scsi_debug: add multiple queue support

2016-05-11T01:22:38+00:00

Add submit_queue parameter (minimum and default: 1; maximum: nr_cpu_ids)
that controls how many queues are built, each with their own lock and
in_use bit vector. Add statistics parameter which is default off.

Signed-off-by: Douglas Gilbert 
Reviewed-by: Bart Van Assche 
Signed-off-by: Martin K. Petersen

scsi_debug: rework resp_report_luns

2016-05-04T02:40:18+00:00

Based on "[PATH V2] scsi_debug: rework resp_report_luns" patch
sent by Tomas Winkler on Thursday, 26 Feb 2015. His notes:
  1. Remove duplicated boundary checks which simplify the fill-in
     loop
  2. Use more of scsi generic API
Replace fixed length response array a with heap allocation
allowing up to 256 normal LUNs per target.

Signed-off-by: Douglas Gilbert 
Reviewed-by: Hannes Reinicke 
Reviewed-by: Tomas Winkler 
Reviewed-by: Bart Van Assche 
Signed-off-by: Martin K. Petersen