linux/drivers/scsi/isci
Tomasz Chudy a8d4b9fe91 isci: workaround port task scheduler starvation issue
There is a condition whereby TCs (task contexts) can jump to the head of
the round robin queue causing indefinite starvation of pending tasks.
Posting a TC to a suspended RNC (remote node context) causes the
hardware to select that task first, but since the RNC is suspended the
scheduler proceeds to the next task in the expected round robin fashion,
restoring TC arbitration fairness.

Signed-off-by: Tomasz Chudy <tomasz.chudy@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2011-07-03 03:55:28 -07:00
..
core isci: workaround port task scheduler starvation issue 2011-07-03 03:55:28 -07:00
firmware isci: Intel(R) C600 Series Chipset Storage Control Unit Driver 2011-07-02 22:56:22 -07:00
events.c isci: rework timer api 2011-07-03 03:55:28 -07:00
events.h isci: rework timer api 2011-07-03 03:55:28 -07:00
host.c isci: workaround port task scheduler starvation issue 2011-07-03 03:55:28 -07:00
host.h isci: rework timer api 2011-07-03 03:55:28 -07:00
init.c isci: fix sas address reporting 2011-07-03 03:55:28 -07:00
isci.h isci: Removing deprecated functions 2011-07-03 03:55:28 -07:00
Makefile isci: Removing deprecated functions 2011-07-03 03:55:28 -07:00
phy.c isci: fix sas address reporting 2011-07-03 03:55:28 -07:00
phy.h isci: Intel(R) C600 Series Chipset Storage Control Unit Driver 2011-07-02 22:56:22 -07:00
port.c isci: fix sas address reporting 2011-07-03 03:55:28 -07:00
port.h isci: Intel(R) C600 Series Chipset Storage Control Unit Driver 2011-07-02 22:56:22 -07:00
remote_device.c isci: debug fixes 2011-07-03 03:55:27 -07:00
remote_device.h isci: Removing deprecated functions 2011-07-03 03:55:28 -07:00
request.c isci: debug fixes 2011-07-03 03:55:27 -07:00
request.h isci: kill SCI_IO_REQUEST_DATA_DIRECTION 2011-07-03 00:36:31 -07:00
sata.c isci: Removing deprecated functions 2011-07-03 03:55:28 -07:00
sata.h isci: Intel(R) C600 Series Chipset Storage Control Unit Driver 2011-07-02 22:56:22 -07:00
sci_environment.h isci: clean up remaining silicon revision ifdefs in phy init 2011-07-03 03:55:28 -07:00
task.c isci: rework timer api 2011-07-03 03:55:28 -07:00
task.h isci: Intel(R) C600 Series Chipset Storage Control Unit Driver 2011-07-02 22:56:22 -07:00
timers.c isci: rework timer api 2011-07-03 03:55:28 -07:00
timers.h isci: rework timer api 2011-07-03 03:55:28 -07:00