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  1. 22 8月, 2008 11 次提交
  3. 05 8月, 2008 1 次提交
  5. 31 7月, 2008 6 次提交
  7. 27 7月, 2008 1 次提交
  9. 26 7月, 2008 1 次提交
  11. 15 7月, 2008 11 次提交
    • M
      AHCI: Remove an unnecessary flush from ahci_qc_issue · 2640d7c0
      由 Matthew Wilcox 提交于 
      In an I/O heavy workload (IOZone), ahci_qc_issue is the second-highest
consumer of CPU cycles.  Removing the flush gets us approximately 10%
bandwidth improvement.  I believe this to be because the CPU can start
queueing the next request instead of waiting for the readl() to flush the
writes to the device.  The flush isn't necessary because we're using a
'queue' metaphor; we don't guarantee the command has got to the device,
nor do we need to guarantee the command has got to the controller.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
      2640d7c0
    • Z
      AHCI: speed up resume · 24920c8a
      由 Zhang Rui 提交于 
      During resume, sleep 1 second to wait for the HBA reset
to finish is a waste of time.

According to the AHCI 1.2 spec,
We should poll the HOST_CTL register,
and return error if the host reset is not
finished within 1 second.

Test results show that the HBA reset can be done quickly(in usecs).
And this patch may save nearly 1 second during resume.
Signed-off-by: NZhang Rui <rui.zhang@intel.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
      24920c8a
    • M
      [libata] Add support for VPD page b1 · 1e9dbc92
      由 Matthew Wilcox 提交于 
      SCSI VPD page b1 reports the nominal rotation speed and physical size
of the device.  Devices that conform to ATA-8 can return this information
in words 217 and 168 of the identify data.
Signed-off-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
      1e9dbc92
    • H
      ata: endianness annotations in pata drivers · 6ad67403
      由 Harvey Harrison 提交于 
      drivers/ata/pata_qdi.c:142:9: warning: incorrect type in assignment (different base types)
drivers/ata/pata_qdi.c:142:9:    expected unsigned int [unsigned] [usertype] pad
drivers/ata/pata_qdi.c:142:9:    got restricted __le32 [usertype] <noident>
drivers/ata/pata_qdi.c:146:15: warning: cast to restricted __le32

drivers/ata/pata_winbond.c:110:9: warning: incorrect type in assignment (different base types)
drivers/ata/pata_winbond.c:110:9:    expected unsigned int [unsigned] [usertype] pad
drivers/ata/pata_winbond.c:110:9:    got restricted __le32 [usertype] <noident>
drivers/ata/pata_winbond.c:114:15: warning: cast to restricted __le32

drivers/ata/pata_legacy.c:310:9: warning: incorrect type in assignment (different base types)
drivers/ata/pata_legacy.c:310:9:    expected unsigned int [unsigned] [usertype] pad
drivers/ata/pata_legacy.c:310:9:    got restricted __le32 [usertype] <noident>
drivers/ata/pata_legacy.c:314:15: warning: cast to restricted __le32
drivers/ata/pata_legacy.c:752:11: warning: cast to restricted __le32
drivers/ata/pata_legacy.c:756:9: warning: incorrect type in assignment (different base types)
drivers/ata/pata_legacy.c:756:9:    expected unsigned int [unsigned] [addressable] [assigned] [usertype] pad
drivers/ata/pata_legacy.c:756:9:    got restricted __le32 [usertype] <noident>
Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
      6ad67403
    • T
      libata-eh: update atapi_eh_request_sense() to take @dev instead of @qc · 3eabddb8
      由 Tejun Heo 提交于 
      Update atapi_eh_request_sense() to take @dev, @sense_buf and
@dfl_sense_key instead of taking @qc and extracting information from
it.  This change is to make the function more generic and allow it to
be called from other places.

While at it, make cdb initialization use initializer.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
      3eabddb8
    • P
      [libata] sata_svw: update code comments relating to data corruption · ec6add99
      由 Pavel Machek 提交于 
      Signed-off-by: NPavel Machek <pavel@suse.cz>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
      ec6add99
    • K
      libata/ahci: enclosure management support · 18f7ba4c
      由 Kristen Carlson Accardi 提交于 
      Add Enclosure Management support to libata and ahci.
Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
      18f7ba4c
    • T
      libata: improve EH internal command timeout handling · 87fbc5a0
      由 Tejun Heo 提交于 
      ATA_TMOUT_INTERNAL which was 30secs were used for all internal
commands which is way too long when something goes wrong.  This patch
implements command type based stepped timeouts.  Different command
types can use different timeouts and each command type can use
different timeout values after timeouts.

ie. the initial timeout is set to a value which should cover most of
the cases but not too long so that run away cases don't delay things
too much.  After the first try times out, the second try can use
longer timeout and if that one times out too, it can go for full 30sec
timeout.

IDENTIFYs use 5s - 10s - 30s timeout and all other commands use 5s -
10s timeouts.

This patch significantly cuts down the needed time to handle failure
cases while still allowing libata to work with nut job devices through
retries.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
      87fbc5a0
    • T
      libata: use ULONG_MAX to terminate reset timeout table · d8af0eb6
      由 Tejun Heo 提交于 
      This doesn't introduce any functional changes.  This is to make reset
timeout table consistent with to-be-added command timeout tables.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
      d8af0eb6
    • T
      libata: improve EH retry delay handling · 0a2c0f56
      由 Tejun Heo 提交于 
      EH retries were delayed by 5 seconds to ensure that resets don't occur
back-to-back.  However, this 5 second delay is superflous or excessive
in many cases.  For example, after IDENTIFY times out, there's no
reason to wait five more seconds before retrying.

This patch adds ehc->last_reset timestamp and record the timestamp for
the last reset trial or success and uses it to space resets by
ATA_EH_RESET_COOL_DOWN which is 5 secs and removes unconditional 5 sec
sleeps.

As this change makes inter-try waits often shorter and they're
redundant in nature, this patch also removes the "retrying..."
messages.

While at it, convert explicit rounding up division to DIV_ROUND_UP().

This change speeds up EH in many cases w/o sacrificing robustness.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
      0a2c0f56
    • T
      libata: consistently use msecs for time durations · 341c2c95
      由 Tejun Heo 提交于 
      libata has been using mix of jiffies and msecs for time druations.
This is getting confusing.  As writing sub HZ values in jiffies is
PITA and msecs_to_jiffies() can't be used as initializer, unify unit
for all time durations to msecs.  So, durations are in msecs and
deadlines are in jiffies.  ata_deadline() is added to compute deadline
from a start time and duration in msecs.

While at it, drop now superflous _msec suffix from arguments and
rename @timeout to @deadline if it represents a fixed point in time
rather than duration.
Signed-off-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
      341c2c95
  13. 13 7月, 2008 1 次提交
  15. 11 7月, 2008 3 次提交
  17. 06 7月, 2008 1 次提交
  19. 04 7月, 2008 4 次提交