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46 Commits

Author SHA1 Message Date
Nick Piggin
75ad23bc0f block: make queue flags non-atomic 
We can save some atomic ops in the IO path, if we clearly define
the rules of how to modify the queue flags.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
 2008-04-29 14:48:33 +02:00
FUJITA Tomonori
8dea0d02f8 [SCSI] scsi_debug: remove unnecessary function declarations 
This patch removes function declarations with moving some
functions. This cleans up them a bit to silence checkpatch.pl. There
is no functional change.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:19:07 -05:00
FUJITA Tomonori
5f2578e579 [SCSI] scsi_debug: support large non-fake virtual disk 
Currently, the maximum amount of RAM that scsi_debug can allocate is
4GB. This patch increases it to 2TB; scsi_debug can allocates 2TB
memory and export it as if it were 2TB scsi disk.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:19:07 -05:00
FUJITA Tomonori
1978910062 [SCSI] scsi_debug: remove the duplicated code in resp_read and resp_write 
resp_read and resp_write performs READ_* and WRITE_* commands
respectively. This sweeps up the similar code in them.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:19:06 -05:00
FUJITA Tomonori
28898873b0 [SCSI] scsi_debug: sweep up sdebug_capacity calculation 
sdebug_capacity is calculated at five different places. This add a
helper function to calculate sdebug_capacity to sweep up the
duplicatated code.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:19:06 -05:00
FUJITA Tomonori
f58b0efbf4 [SCSI] scsi_debug: remove unnecessary sdebug_store_size 
sdebug_store_size doesn't need to be static global. It's used at
startup only.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:19:06 -05:00
FUJITA Tomonori
d5cdc9898b [SCSI] scsi_debug: fix lba and data length calculation bugs 
For example, `modprobe scsi_debug virtual_gb=1100` gives:

scsi7 : scsi_debug, version 1.81 [20070104], dev_size_mb=8, opts=0x0
scsi 7:0:0:0: Direct-Access     Linux    scsi_debug       0004 PQ: 0 ANSI: 5
sd 7:0:0:0: [sdc] 2306867200 512-byte hardware sectors (1181116 MB)
sd 7:0:0:0: [sdc] Write Protect is off
sd 7:0:0:0: [sdc] Mode Sense: 73 00 10 08
sd 7:0:0:0: [sdc] Write cache: enabled, read cache: enabled, supports DPO and FUA
sd 7:0:0:0: [sdc] 2306867200 512-byte hardware sectors (1181116 MB)
sd 7:0:0:0: [sdc] Write Protect is off
sd 7:0:0:0: [sdc] Mode Sense: 73 00 10 08
sd 7:0:0:0: [sdc] Write cache: enabled, read cache: enabled, supports DPO and FUA
 sdc: unknown partition table
sd 7:0:0:0: [sdc] Attached SCSI disk
sd 7:0:0:0: Attached scsi generic sg6 type 0
end_request: I/O error, dev sdc, sector 2306867072
Buffer I/O error on device sdc, logical block 288358384
end_request: I/O error, dev sdc, sector 2306867072
Buffer I/O error on device sdc, logical block 288358384
end_request: I/O error, dev sdc, sector 2306867192

(snip)

Note that this converts all the calculations (including the correct
calculations) for unification.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:19:03 -05:00
FUJITA Tomonori
a34c4e9836 [SCSI] scsi_debug: use scsi_build_sense_buffer 
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:19:01 -05:00
FUJITA Tomonori
639db475c8 [SCSI] scsi_debug: remove unnecessary function declarations 
This patch removes lots of function declarations with moving
scsi_debug_queuecommand. This cleans up scsi_debug_queuecommand a bit
to silence checkpatch.pl

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:18:59 -05:00
FUJITA Tomonori
8b40228f3f [SCSI] scsi_debug: use list_for_each_entry_safe 
This replaces list_for_each_safe and list_entry with
list_for_each_entry_safe.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:18:59 -05:00
FUJITA Tomonori
a75869d1ff [SCSI] scsi_debug: remove unnecessary condition test in devInfoReg 
open_devip is always non NULL.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:18:58 -05:00
FUJITA Tomonori
5cb2fc0610 [SCSI] scsi_debug: create new scsi_debug devices at a single place 
Two functions, sdebug_add_adapter and devInfoReg, creates new
scsi_debug devices. To simplify the code, this patch adds a new helper
function to create new scsi_debug devices (sdebug_device_create) and
converts both functions to use it.

I plan to add more to scsi_debug devices (e.g. using a thread for a
scsi_debug device for scalability testings). This patch enable me to
add such to just the new helper function instead of touching two
functions, sdebug_add_adapter and devInfoReg.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:18:58 -05:00
FUJITA Tomonori
f3df41cff4 [SCSI] scsi_debug: remove temporary hack around sscanf for negative values 
sscanf can handle negative values.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:18:58 -05:00
FUJITA Tomonori
21a6182924 [SCSI] scsi_debug: use sg buffer copy helper functions 
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:15:45 -05:00
FUJITA Tomonori
d1e4c9c57c [SCSI] scsi_debug: use shost_priv macro 
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:15:41 -05:00
FUJITA Tomonori
96ad0dfe83 [SCSI] scsi_debug: remove unnecessary checking 
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:15:41 -05:00
FUJITA Tomonori
9e603ca06a [SCSI] scsi_debug: remove scsi_debug.h 
scsi_debug.h just incldues some function declarations. This patch removes it
with moving the scsi_host_template.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:15:41 -05:00
FUJITA Tomonori
9ff26eefd4 [SCSI] scsi_debug: stop including drivers/scsi/scsi.h 
This converts scsi_debug to include header files in include/scsi/
instead of drivers/scsi/scsi.h.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:15:40 -05:00
Andi Kleen
9924a781f3 [SCSI] Remove random noop unchecked_isa_dma users 
Lots of drivers set it to 0. Remove that. Patch should be a nop.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-04-07 12:15:40 -05:00
FUJITA Tomonori
cbccc20712 [SCSI] scsi_debug: disable clustering 
scsi_debug does at several places:

for_each_sg(sdb->table.sgl, sg, sdb->table.nents, k) {
	kaddr = (unsigned char *)
		kmap_atomic(sg_page(sg), KM_USER0);

We cannot do something like that with the clustering enabled (or we
can use scsi_kmap_atomic_sg).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-02-18 08:57:16 -06:00
FUJITA Tomonori
c639d14e2f [SCSI] scsi_debug: add XDWRITEREAD_10 support 
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-01-30 13:14:25 -06:00
FUJITA Tomonori
072d0bb3ce [SCSI] scsi_debug: add bidi data transfer support 
This enables fill_from_dev_buffer and fetch_to_dev_buffer to handle
bidi commands.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-01-30 13:14:24 -06:00
FUJITA Tomonori
3de9f94479 [SCSI] scsi_debug: add get_data_transfer_info helper function 
This adds get_data_transfer_info helper function that get lha and
sectors for READ_* and WRITE_* commands (and XDWRITEREAD_10 later).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-01-30 13:14:24 -06:00
Boaz Harrosh
c73961e563 [SCSI] scsi_debug: convert to use the data buffer accessors 
- remove the unnecessary map_single path.
  - convert to use the new accessors for the sg lists and the
    parameters.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 2008-01-11 18:22:38 -06:00
Jens Axboe
45711f1af6 [SG] Update drivers to use sg helpers 
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
 2007-10-22 21:19:53 +02:00