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  1. 16 10月, 2007 1 次提交
  3. 13 10月, 2007 1 次提交
  5. 04 8月, 2007 1 次提交
  7. 02 8月, 2007 4 次提交
  9. 15 7月, 2007 2 次提交
  11. 18 6月, 2007 5 次提交
  13. 06 5月, 2007 5 次提交
  15. 03 12月, 2006 2 次提交
  17. 05 9月, 2006 1 次提交
  19. 20 8月, 2006 1 次提交
    • J
      [SCSI] lpfc 8.1.9 : Stall eh handlers if resetting while rport blocked · a90f5684
      由 James Smart 提交于 
      Stall error handler if attempting resets/aborts while an rport is blocked.
This avoids device offline scenarios due to errors in the error handler.

Background:
  Although the transport is using the scsi_timed_out functionality to
  restart the timeout if the rport is blocked, if the timeout has already
  fired before the block occurs, the eh handler still runs and can take
  the device offline. Ultimately, this window cannot be resolved without
  significant work in the error handler thread. Christoph noted the first
  level of these issues when he noted the poor error response handling
  by the error thread.

  We found, under heavy load and error testing, that time window from when
  the scsi_times_out() adds the io to the queue to when the scsi_error_handler
  gets around to servicing it, can be in the several seconds range. In most
  cases, these test conditions are highly unusual, but possible.
  As a result, we're stalling the error handler in this race window so that
  we can avoid the device_offline transitions.
Signed-off-by: NJames Smart <James.Smart@emulex.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      a90f5684
  21. 07 8月, 2006 1 次提交
  23. 09 7月, 2006 3 次提交
  25. 27 6月, 2006 1 次提交
  27. 04 5月, 2006 1 次提交
  29. 06 3月, 2006 1 次提交
  31. 01 3月, 2006 2 次提交
  33. 13 1月, 2006 1 次提交
  35. 14 12月, 2005 5 次提交
    • J
      [SCSI] lpfc 8.1.1 : Added code to adjust lun queue depth to avoid target overloading · 445cf4f4
      由 James.Smart@Emulex.Com 提交于 
      Signed-off-by: NJames Smart <James.Smart@emulex.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      445cf4f4
    • J
      [SCSI] lpfc 8.1.1 : Add polled-mode support · 875fbdfe
      由 James.Smart@Emulex.Com 提交于 
      - Add functionality to run in polled mode only. Includes run time
  attribute to enable mode.
- Enable runtime writable hba settings for coallescing and delay parameters

Customers have requested a mode in the driver to run strictly polled.
This is generally to support an environment where the server is extremely
loaded and is looking to reclaim some cpu cycles from adapter interrupt
handling.

This patch adds a new "poll" attribute, and the following behavior:

if value is 0 (default):
  The driver uses the normal method for i/o completion. It uses the
  firmware feature of interrupt coalesing. The firmware allows a
  minimum number of i/o completions before an interrupt, or a maximum
  time delay between interrupts.  By default, the driver sets these
  to no delay (disabled) or 1 i/o - meaning coalescing is disabled.

  Attributes were provided to change the coalescing values, but it was
  a module-load time only and global across all adapters.
  This patch allows them to be writable on a per-adapter basis.

if value is 1 :
  Interrupts are left enabled, expecting that the user has tuned the
  interrupt coalescing values. When this setting is enabled, the driver
  will attempt to service completed i/o whenever new i/o is submitted
  to the adapter. If the coalescing values are large, and the i/o
  generation rate steady, an interrupt will be avoided by servicing
  completed i/o prior to the coalescing thresholds kicking in. However,
  if the i/o completion load is high enough or i/o generation slow, the
  coalescion values will ensure that completed i/o is serviced in a timely
  fashion.

if value is 3 :
  Turns off FCP i/o interrupts altogether. The coalescing values now have
  no effect. A new attribute "poll_tmo" (default 10ms) exists to set
  the polling interval for i/o completion. When this setting is enabled,
  the driver will attempt to service completed i/o and restart the
  interval timer whenever new i/o is submitted. This behavior allows for
  servicing of completed i/o sooner than the interval timer, but ensures
  that if no i/o is being issued, then the interval timer will kick in
  to service the outstanding i/o.
Signed-off-by: NJames Smart <James.Smart@emulex.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      875fbdfe
    • J
      [SCSI] lpfc 8.1.1 : Fixes to error handlers · 6175c02a
      由 James.Smart@Emulex.Com 提交于 
      - Release task management command before counting outstanding commands.
  TMF was being erroneously counted as an active outstanding command.
- Serialize EH calls and block requests when EH function is running.
Signed-off-by: NJames Smart <James.Smart@emulex.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      6175c02a
    • J
      [SCSI] lpfc 8.1.1 : Remove locking wrappers around error handlers · 63c59c3b
      由 James.Smart@Emulex.Com 提交于 
      Remove locking wrappers around error handlers. Wrappers were added in
early 2.6.13 api change
Signed-off-by: NJames Smart <James.Smart@emulex.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      63c59c3b
    • J
      [SCSI] lpfc 8.1.1: Miscellaneous Cleanups · 1de933f3
      由 James.Smart@Emulex.Com 提交于 
      Miscellaneous Cleanups:
- Remove ProgType READ_REV mailbox command value check in lpfc_config_port_prep.
- Convert simple printk to an lpfc_printf_log in queuecommand.
- Modify lpfc_abort_handler message 0749 to display more accurate text and data.
- Minor style cleanup: fix 3 long lines in lpfc_hw.h
Signed-off-by: NJames Smart <James.Smart@emulex.com>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      1de933f3
  37. 07 11月, 2005 1 次提交
  39. 29 10月, 2005 1 次提交