Commit graph

438261 commits

Author SHA1 Message Date
Shannon Nelson
ca04657b9d i40e: check for netdev before debugfs use
Make sure the VSI has a netdev before trying to use it
in the debugfs netdev_ops commands.

Change-ID: I2d744fc0c32b3226534ce2cde171d9675c5440a6
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-28 06:54:00 -07:00
Jesse Brandeburg
c550360343 i40evf: remove double space after return
There were two spaces between return and the value, we only need one.

Change-ID: Iaa42c33f50d8d149cdf1a4c9c1902295bfd991c4
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Kevin Scott <kevin.c.scott@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-28 06:54:00 -07:00
Anjali Singhai Jain
35a91fdd52 i40e: Add functionality for FD SB to drop packets
With this change we can drop a flow if we wanted to.

Change-ID: I222b1ae960e61a31965bafe3159a95099e70c7d2
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-28 06:53:59 -07:00
Anjali Singhai Jain
1eaa3840b7 i40e: Cleanup in FDIR SB ethtool code
Function add_del_fdir was used and implemented only for add. So change the name
and drop a parameter.

Change-ID: Icf2c6c3bbd4fd00cf8d9613a3f6d8c08e0f8e288
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-28 06:53:59 -07:00
Shannon Nelson
4eb3f7685f i40e: eeprom integrity check on load and empr
The driver needs to verify the eeprom checksum and firmware crc status bits,
and shutdown the driver if they fail. This code stops the processing of traffic,
but doesn't kill the PF netdev so that the NVMUpdate process should still have a
chance at fixing the image. The eeprom is checked on driver load and after an
EMP reset, the latter of which should be generated after an NVMUpdate.

Change-ID: I34deef21d2e16bf5a43c603cf8af27e6a29dc9d2
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-28 06:53:59 -07:00
Greg Rose
90e0407096 i40e: Make the alloc and free queue vector calls orthogonal
It's annoying to search for a matching alloc and free set of function calls
when they don't use the same framework for the name of the functions.  Fix
that up in the case of alloc and free of vsi queue vectors.

i40e_vsi_free_q*
i40e_vsi_alloc_q*

Change-ID: I510eb863a0fbe405312bebea55c2846c76285e6d
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-28 06:53:58 -07:00
Mitch Williams
3526d8005f i40evf: fix oops in watchdog handler
The Tx watchdog handler runs in interrupt context, so it would cause an
oops when sending an admin queue message to request a reset, because the
admin queue functions use spinlocks.

Instead, set a flag and let the reset task handle sending the request.

Change-ID: I65879470b72963d9c308edfb8f45ac4fbba2c14f
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-28 06:53:58 -07:00
Anjali Singhai Jain
ce806783bd i40e: Delete ATR filter on RST
We currently delete ATR filter on FIN alone, delete on RST as well.

Change-ID: Ie7cae5d1046b9d1d4a0d6ef5bdbf41224c3dade6
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Catherine Sullivan <catherine.sullivan@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-03-28 06:53:57 -07:00
Mark Brown
6012b1f342 Merge remote-tracking branches 'regmap/topic/cache', 'regmap/topic/irq', 'regmap/topic/lock', 'regmap/topic/mmio', 'regmap/topic/nodev', 'regmap/topic/parse-val' and 'regmap/topic/patch' into regmap-next 2014-03-28 11:50:43 +00:00
Mark Brown
b3bf36cb6a Merge remote-tracking branch 'regmap/topic/core' into regmap-next 2014-03-28 11:50:42 +00:00
Mark Brown
6ce6d9c214 regmap: Fix for v3.14
One fix here, for syncing the last register in a cache block when the
 register map has a stride.  This is a fairly unusual hardware
 configuration and the fact that it only affects the last register in a
 block makes the issue rarer still.
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Merge tag 'regmap-v3.14-rc4' into regmap-linus

regmap: Fix for v3.14

One fix here, for syncing the last register in a cache block when the
register map has a stride.  This is a fairly unusual hardware
configuration and the fact that it only affects the last register in a
block makes the issue rarer still.

# gpg: Signature made Sun 23 Feb 2014 04:36:37 GMT using RSA key ID 7EA229BD
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>"
# gpg:                 aka "Mark Brown <broonie@debian.org>"
# gpg:                 aka "Mark Brown <broonie@kernel.org>"
# gpg:                 aka "Mark Brown <broonie@tardis.ed.ac.uk>"
# gpg:                 aka "Mark Brown <broonie@linaro.org>"
# gpg:                 aka "Mark Brown <Mark.Brown@linaro.org>"
2014-03-28 11:50:39 +00:00
Axel Lin
c63f5da008 spi: dw: Don't call kfree for memory allocated by devm_kzalloc
With devm_kzalloc, the memory is automatically freed when spi_device detach from
the bus.

Fixes: commit 43f627ac9d (spi: dw: fix memory leak on error path)
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: stabe@vger.kernel.org
2014-03-28 11:48:55 +00:00
Axel Lin
0e0cd9ea89 spi: fsl-dspi: Fix memory leak
The memory allocated for chip is not freed anywhere.
Convert to use devm_kzalloc to fix the memory leak.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-28 11:47:43 +00:00
Dan Carpenter
14d4056996 iommu/vt-d: returning free pointer in get_domain_for_dev()
If we hit this error condition then we want to return a NULL pointer and
not a freed variable.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2014-03-28 11:31:39 +00:00
David Woodhouse
63b4262478 iommu/vt-d: Only call dmar_acpi_dev_scope_init() if DRHD units present
As pointed out by Jörg and fixed in commit 11f1a7768 ("iommu/vt-d: Check
for NULL pointer in dmar_acpi_dev_scope_init(), this code path can
bizarrely get exercised even on AMD IOMMU systems with IRQ remapping
enabled.

In addition to the defensive check for NULL which Jörg added, let's also
just avoid calling the function at all if there aren't an Intel IOMMU
units in the system.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2014-03-28 11:28:40 +00:00
Xiubo Li
451485ba6b regmap: mmio: Add regmap_mmio_regbits_check.
Fix the support for 1/2/8 bytes wide register address checking.

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-28 11:12:05 +00:00
Clinton Sprain
703e148875 Input: appletouch - dial back fuzz setting
Let's dial back the default fuzz setting for most devices using this
driver, based on values from user feedback from forums and bug reports.

Signed-off-by: Clinton Sprain <clintonsprain@gmail.com>
Reviewed-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-03-28 01:14:00 -07:00
Arnd Bergmann
e545ef39e0 Input: remove obsolete tnetv107x drivers
The tnetv107x platform is getting removed, so the touchscreen
and keypad drivers for this platform will no longer be needed
either.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: linux-input@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-03-28 01:10:11 -07:00
Xianglong Du
9732e5b0bf Input: sirfsoc-onkey - set the capability of reporting KEY_POWER
commit a1a7521064 moved to report EV_KEY event(KEY_POWER) instead of
reporting EV_PWR event(KEY_SUSPEND), but it didn't enable the capability, so
the KEY_POWER will not be reported to userspace by input core. this patch fixes
the issue.

Signed-off-by: Xianglong Du <Xianglong.Du@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-03-28 01:10:04 -07:00
John Stultz
cab5e127ee time: Revert to calling clock_was_set_delayed() while in irq context
In commit 47a1b79630 ("tick/timekeeping: Call
update_wall_time outside the jiffies lock"), we moved to calling
clock_was_set() due to the fact that we were no longer holding
the timekeeping or jiffies lock.

However, there is still the problem that clock_was_set()
triggers an IPI, which cannot be done from the timer's hard irq
context, and will generate WARN_ON warnings.

Apparently in my earlier testing, I'm guessing I didn't bump the
dmesg log level, so I somehow missed the WARN_ONs.

Thus we need to revert back to calling clock_was_set_delayed().

Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1395963049-11923-1-git-send-email-john.stultz@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-03-28 08:07:07 +01:00
David S. Miller
e1250037de Merge branch 'mdio_reset-next'
Florian Fainelli says:

====================
net: remove empty MDIO bus reset functions

This patchset removes all empty MDIO bus reset functions that we have in the
tree (hopefully all of them). This function is optional for the MDIO bus code in
drivers/net/phy/mdio_bus.c::mdiobus_register, the documentation is updated to
reflect that.

Having less call sites to update will allow us to implement a generic BMCR_RESET
based PHY reset for MDIO buses that require to reset their PHYs before their
PHY detection succeeds (e.g: HiSilicon hip04 current submission) and provide it
as a helper.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:10 -04:00
Florian Fainelli
604fdf4286 Documentation: networking: phy.txt: MDIO bus reset is optional
Update the MDIO bus documentation to mention that the MDIO bus reset
function is completely optional. It became optional with commit
e13934563d ("[PATCH] PHY Layer fixup")

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:03 -04:00
Florian Fainelli
3eecc94894 bfin_mac: remove empty MDIO bus reset function
bfin_mdiobus_reset() does nothing useful and is optional for the MDIO
bus code, so let's just remove it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:02 -04:00
Florian Fainelli
42cb7a2806 r6040: remove empty MDIO bus reset function
r6040_mdiobus_reset() does nothing useful and is optional for the MDIO
bus code, so let's just remove it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:02 -04:00
Florian Fainelli
aa7e0ed4a1 net: ftgmac100: remove empty MDIO bus reset function
ftgmac100_mdiobus_reset() does nothing useful and is optional for the
MDIO bus code, so let's just remove it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:02 -04:00
Florian Fainelli
fe1ee45068 net: sun4i: remove empty MDIO bus reset function
sun4i_mdio_reset() does nothing useful and is optional for the MDIO bus
code, so let's just remove it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:02 -04:00
Florian Fainelli
33c0431ea6 net: emaclite: remove empty MDIO bus reset function
xemaclite_mdio_reset() does nothing useful and is optional for the MDIO
bus code, so let's just remove it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:02 -04:00
Florian Fainelli
ca7efe819c net: mvmdio: remove empty MDIO bus reset function
orion_mdio_reset() does nothing useful and is optional for the MDIO bus
code, so let's just remove it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:02 -04:00
Florian Fainelli
5cab2733b9 fs_enet: remove empty MDIO bus function
fs_enet_fec_mii_reset() does nothing useful and is optional for the MDIO
bus code, so let's just remove it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:02 -04:00
Florian Fainelli
fe29bd8d1e fec: remove empty MDIO bus function
fec_enet_mdio_reset() does nothing useful and is optional for the MDIO
bus code, so let's just remove it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:02 -04:00
Florian Fainelli
6da4dc629b net: ethoc: remove empty MDIO bus function
ethoc_mdio_reset() does nothing useful and is optional for the MDIO bus
code, so let's just remove it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:02 -04:00
Florian Fainelli
89e158f909 dnet: remove empty MDIO bus reset function
dnet_mdio_reset() does nothing useful and is optional for the MDIO bus
code, so let's just remove it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:02 -04:00
Florian Fainelli
5b31f22a8b macb: remove empty MDIO bus reset function
macb_mdio_reset() does nothing useful and is optional for the MDIO bus
code, so let's just remove it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:01 -04:00
Florian Fainelli
7427440b2a tg3: remove empty MDIO bus reset function
tg3_mdio_reset() does nothing useful and is optional for the MDIO bus
code, so let's just remove it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:01 -04:00
Florian Fainelli
1f5533812b net: greth: remove empty MDIO bus reset function
greth_mdio_reset() does nothing useful and this function is optional for
the MDIO bus code, so let's just remove it.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-03-28 01:38:01 -04:00
Daniel Vetter
8ee661b505 drm/i915: Undo gtt scratch pte unmapping again
It apparently blows up on some machines. This functionally reverts

commit 828c79087c
Author: Ben Widawsky <benjamin.widawsky@intel.com>
Date:   Wed Oct 16 09:21:30 2013 -0700

    drm/i915: Disable GGTT PTEs on GEN6+ suspend

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=64841
Reported-and-Tested-by: Brad  Jackson <bjackson0971@gmail.com>
Cc: stable@vger.kernel.org
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Todd Previte <tprevite@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-03-28 12:33:50 +10:00
Dave Airlie
c53c6beddc drm/radeon: fix runtime suspend breaking secondary GPUs
Same fix as for nouveau, when we fail with EINVAL, subsequent
gets fail hard, causing the device not to open.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
2014-03-28 12:27:25 +10:00
Sylwester Nawrocki
e5ca8fb4cc clk: Fix minor errors in of_clk_init() function comments
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-03-27 16:48:14 -07:00
Sylwester Nawrocki
3f6d439f20 clk: reverse default clk provider initialization order in of_clk_init()
This restores the default clocks registration order as parsed from
devicetree, i.e. as before commit 1771b10d60
"clk: respect the clock dependencies in of_clk_init", for when there
is no explicit parent clock dependencies between clock providers
specified in the device tree.

It prevents regressions (boot failure, division by 0 errors) on
imx and exynos platforms.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Tested-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-03-27 16:48:06 -07:00
Maxime Ripard
9233087dc4 ARM: sunxi: Select HAVE_ARM_ARCH_TIMER
In order for the architected timers support to be enabled in the kernel, this
option has to be enabled. Otherwise, the architected timers driver won't be
compiled in, and we will not get to use them.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
2014-03-27 14:26:27 -07:00
Jose Castillo
a356e42620 dm mpath: print more useful warnings in multipath_message()
The warning message "Unrecognised multipath message received" is
displayed in two different situations in multipath_message(): when the
number of arguments passed is invalid and when the string passed in
argv[0] is not recognized.

Make it easier to identify where the problem is by making these warnings
more specific with additional context for each case.

Signed-off-by: Jose Castillo <jcastillo@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2014-03-27 16:56:25 -04:00
Hannes Reinecke
3a01750964 dm-mpath: do not activate failed paths
activate_path() is run without a lock, so the path might be
set to failed before activate_path() had a chance to run.
This patch add a check for ->active in activate_path() to
avoid unnecessary overhead by calling functions which are known
to be failing.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2014-03-27 16:56:25 -04:00
Mike Snitzer
9bf59a611a dm mpath: remove extra nesting in map function
Return early for case when no path exists, and when the
pathgroup isn't ready. This eliminates the need for
extra nesting for the the common case.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
2014-03-27 16:56:25 -04:00
Hannes Reinecke
36fcffcc65 dm mpath: remove map_io()
multipath_map() is now just a wrapper around map_io(), so we
can rename map_io() to multipath_map().

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
2014-03-27 16:56:25 -04:00
Hannes Reinecke
e3bde04f1e dm mpath: reduce memory pressure when requeuing
When multipath needs to requeue I/O in the block layer the per-request
context shouldn't be allocated, as it will be freed immediately
afterwards anyway.  Avoiding this memory allocation will reduce memory
pressure during requeuing.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
2014-03-27 16:56:25 -04:00
Hannes Reinecke
3e9f1be1b4 dm mpath: remove process_queued_ios()
process_queued_ios() has served 3 functions:
  1) select pg and pgpath if none is selected
  2) start pg_init if requested
  3) dispatch queued IOs when pg is ready

Basically, a call to queue_work(process_queued_ios) can be replaced by
dm_table_run_md_queue_async(), which runs request queue and ends up
calling map_io(), which does 1), 2) and 3).

Exception is when !pg_ready() (which means either pg_init is running or
requested), then multipath_busy() prevents map_io() being called from
request_fn.

If pg_init is running, it should be ok as long as pg_init_done() does
the right thing when pg_init is completed, I.e.: restart pg_init if
!pg_ready() or call dm_table_run_md_queue_async() to kick map_io().

If pg_init is requested, we have to make sure the request is detected
and pg_init will be started.  pg_init is requested in 3 places:
  a) __choose_pgpath() in map_io()
  b) __choose_pgpath() in multipath_ioctl()
  c) pg_init retry in pg_init_done()
a) is ok because map_io() calls __pg_init_all_paths(), which does 2).
b) needs a call to __pg_init_all_paths(), which does 2).
c) needs a call to __pg_init_all_paths(), which does 2).

So this patch removes process_queued_ios() and ensures that
__pg_init_all_paths() is called at the appropriate locations.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
2014-03-27 16:56:24 -04:00
Hannes Reinecke
e809917735 dm mpath: push back requests instead of queueing
There is no reason why multipath needs to queue requests internally for
queue_if_no_path or pg_init; we should rather push them back onto the
request queue.

And while we're at it we can simplify the conditional statement in
map_io() to make it easier to read.

Since mpath no longer does internal queuing of I/O the table info no
longer emits the internal queue_size.  Instead it displays 1 if queuing
is being used or 0 if it is not.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
2014-03-27 16:56:24 -04:00
Mike Snitzer
9974fa2c6a dm table: add dm_table_run_md_queue_async
Introduce dm_table_run_md_queue_async() to run the request_queue of the
mapped_device associated with a request-based DM table.

Also add dm_md_get_queue() wrapper to extract the request_queue from a
mapped_device.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
2014-03-27 16:56:24 -04:00
Hannes Reinecke
17f4ff45b5 dm mpath: do not call pg_init when it is already running
This patch moves condition checks as a preparation of following
patches and has no effect on behaviour.
process_queued_ios() is the only caller of __pg_init_all_paths()
and 2 condition checks are moved from outside to inside without
side effects.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Reviewed-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
2014-03-27 16:56:24 -04:00
Monam Agarwal
9cdb852004 dm: use RCU_INIT_POINTER instead of rcu_assign_pointer in __unbind
Replace rcu_assign_pointer(p, NULL) with RCU_INIT_POINTER(p, NULL).

The rcu_assign_pointer() ensures that the initialization of a structure
is carried out before storing a pointer to that structure.  And in the
case of the NULL pointer, there is no structure to initialize.  So,
rcu_assign_pointer(p, NULL) can be safely converted to
RCU_INIT_POINTER(p, NULL).

Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2014-03-27 16:56:24 -04:00