linux-toradex.git/drivers/target/target_core_tmr.c, branch v3.14.45

target: Convert se_device statistics to atomic_long_t

2013-11-14T02:34:55+00:00

This patch converts the handful of se_device statistics to type
atomic_long_t, instead of using se_device->stats_lock when
incrementing these values.

More importantly, go ahead and drop the spinlock usage within
transport_lookup_cmd_lun() fast-path code.

Signed-off-by: Nicholas Bellinger

target: Update copyright ownership/year information to 2013

2013-09-11T03:23:36+00:00

Update copyright ownership/year information for target-core,
loopback, iscsi-target, tcm_qla2xx, vhost and iser-target.

Signed-off-by: Nicholas Bellinger

target: Remove legacy t_fe_count + avoid t_state_lock access in transport_put_cmd

2013-06-20T21:10:41+00:00

This patch removes legacy se_cmd->t_fe_count usage in order to avoid
se_cmd->t_state_lock access within transport_put_cmd() during normal
fast path se_cmd descriptor release.

Also drop the left-over parameter usage within core_tmr_handle_tas_abort()

Cc: Christoph Hellwig 
Cc: Roland Dreier 
Cc: Kent Overstreet 
Cc: Or Gerlitz 
Cc: Moussa Ba 
Signed-off-by: Nicholas Bellinger

target: Remove useless if statement

2013-02-13T19:27:22+00:00

We do the same thing no matter which way the test goes, so just remove
the test and do what we're going to do.

The debug messages printed the wrong value of CMD_T_ACTIVE and don't
seem particularly useful, remove them too.

Signed-off-by: Roland Dreier 
Signed-off-by: Nicholas Bellinger

target: Update copyright information to 2012

2012-11-28T06:47:02+00:00

v2: Use correct target_core_stat.c 2006 copyright year
v3: Drop extra unnessary legal verbage from header (hch)

Cc: Christoph Hellwig 
Signed-off-by: Nicholas Bellinger

target: kill struct se_subsystem_dev

2012-11-07T04:55:43+00:00

Simplify the code a lot by killing the superflous struct se_subsystem_dev.
Instead se_device is allocated early on by the backend driver, which allocates
it as part of its own per-device structure, borrowing the scheme that is for
example used for inode allocation.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Nicholas Bellinger

target: Fix incorrect usage of nested IRQ spinlocks in ABORT_TASK path

2012-11-01T07:38:45+00:00

This patch changes core_tmr_abort_task() to use spin_lock -> spin_unlock
around se_cmd->t_state_lock while spin_lock_irqsave is held via
se_sess->sess_cmd_lock.

Signed-off-by: Steve Hodgson 
Signed-off-by: Roland Dreier 
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger

target: replace the processing thread with a TMR work queue

2012-07-17T00:35:21+00:00

The last functionality of the target processing thread is offloading possibly
long running task management requests from the submitter context.  To keep
TMR semantics the same we need a single threaded ordered queue, which can
be provided by a per-device workqueue with the right flags.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Nicholas Bellinger

target: remove the execute list

2012-07-17T00:29:11+00:00

Since "target: Drop se_device TCQ queue_depth usage from I/O path" we always
submit all commands (or back then, tasks) from __transport_execute_tasks.

That means the the execute list has lots its purpose, as we can simply
submit the commands that are restarted in transport_complete_task_attr
directly while we walk the list.  In fact doing so also solves a race
in the way it currently walks to delayed_cmd_list as well.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Nicholas Bellinger

target: remove the t_task_cdbs_ex_left field in struct se_cmd

2012-05-06T22:11:27+00:00

Now that tasks are gone we are guaranteed to only get a single completion
per command, and thus don't need this counter.

Signed-off-by: Christoph Hellwig 
Signed-off-by: Nicholas Bellinger