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I ended up renaming set_cpu_int to send_ipi to
be consistent all way around.
send_ipi was moved to the *_smp.c files so
we could call the relevant method direct,
without any _ops indirection.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Under most circumstances, the bitmap allocator does not allocate the
same full 24-bit QP number immediately after a QP is destroyed.
This works by using the upper bits of a 24-bit QP number, beyond the
number of QPs that are actually available in the low level driver.
For example, say that the HCA is willing to allocate a maximum of 64K
qps. We use the bits 23..16 as a "counter" which is incremented by 1
at each allocation so that even if the same physical QP is
re-allocated, it will not receive the same 24-bit QP number.
However, we have seen the following scenario:
1. Allocate, say, 255 QPs in succession. This will cause a wrap of the "counter".
2. Destroy the first QP allocated, then allocate a new QP. The new QP,
because of the counter wraparound, will get the same FULL QP number as
the QP just destroyed!
This is a problem because packets in transit can be erroneously
delivered to the new QP when they were meant for the old (destroyed)
QP, because the full QP number of the new QP is identical to the
destroyed QP. (The "counter" mechanism is meant to prevent this by
having the full 24-bit QP numbers differ even if the physical QP on
the HCA is the same. As we see above, however, this mechanism does
not always work).
The best fix for this problem is to allocate QPs in round-robin mode,
so that the physical QP numbers are not immediately re-used.
Found-by: Matthew Finlay <matt@mellanox.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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This is the last non-trivial user of btfixup.
Like sparc64, use a special patch section to resolve the various
implementations of how to read the current CPU's ID when we don't
have current_thread_info()->cpu necessarily available.
Signed-off-by: David S. Miller <davem@davemloft.net>
Tested-by: Sam Ravnborg <sam@ravnborg.org>
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Don't call the ibqp event_handler pointer in the case it wasn't initialized.
Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Donald Wood <Donald.E.Wood@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Set ORD value of the connecting peer to be at least one in order to
accommodate an RDMA READ Request message.
Signed-off-by: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Donald Wood <Donald.E.Wood@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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This patch reorganizes the QP and devdata files to be more cache line aware.
qib_qp fields in particular are split into read-mostly, send, and receive fields.
qib_devdata fields are split into read-mostly and read/write fields
Testing has show that bidirectional tests improve by as much as 100%
with this patch.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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If a MAD is sent directly to the local HCA rather than placed on a QP
and the MAD fails M_Key checks, there is no means to generate a
timeout for the client, which may hang. Instead we report
IB_MAD_RESULT_FAILURE, which operates the same for on-the-wire
packets, but will generate a send failure back to the client.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Jim Foraker <foraker1@llnl.gov>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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If a port has an M_Key lease set, the M_Key protect bits set to 1, and
a SubnSet arrives with an invalid M_Key, an M_Key mismatch trap is
generated, the lease timer begins as expected, and eventually the
M_Key protect bits will be set back to 0 as per the spec. However, if
any other SMP with an invalid M_Key arrives, the lease timer is expired
and the M_Key protect bits remain in force.
This is not according to to spec. In particular, C14-17 says that
a lease timer that is underway is not affected by protection level
checks (ie, at protection level 1, a SubnGet with a bad M_Key may be
successful, but does not stop the timer), and C14-19 says that the timer
shall stop when a valid M_Key has been received. C14-19 is the only
compliance statement that specifies a stopping condition for the timer.
This behavior is magnified if the port's Master SM LID attribute
points at itself. In that case, the M_Key mismatch trap is sufficient to
expire the timer, and the mkey lease attribute is rendered useless.
Reviewed-by: Ram Vepa <ram.vepa@qlogic.com>
Signed-off-by: Jim Foraker <foraker1@llnl.gov>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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The SERDES was using the incorrect Frequency Loop Bandwidth setting
causing the link to cycle through the Physical link negotiation state
machine. Fixing the Frequency Loop Bandwidth setting in the SERDES
helps the link come up faster and more reliably.
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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A "fix" for a bug with the number of contexts on a single-port board
caused the calculation to be off by one, which causes problems with
the upper layers. The same problem exists for number of free
contexts, which is also fixed here.
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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When a port first goes active with SMA Set(PortInfo) and reregister
bit set, the driver sends up the reregister event followed by a port
active event.
The problem is that in response to reregister event most apps try to
issue a SA query of some sort, but that fails because port is not
active.
The qib driver needs to a trivial change to correct this behavior.
This issue has been there for a while; however the recent serdes work
has probably made the delay between the reregister event and the
active event larger and hence opened the race far enough so that its
being seen more often.
The patch also changes the clientrereg local to a u8 and saves off the
rereg bit into it. The code following the nested subn_get_portinfo()
now restores that bit per o14-12.2.1 with a logical OR from that copy.
Reviewed-by: Ram Vepa <ram.vepa@qlogic.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@qlogic.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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This patch optimizes pio buffer allocation in the kernel.
For qib, kernel pio buffers are used for sending acks. The code to
allocate the buffer would always start at 0 until it found a buffer.
This means that an average of 64 comparisions were done on each
allocate, since the busy bit won't be cleared until the bits are
refreshed when buffers are exhausted.
This patch adds two new fields in the devdata struct, last_pio and
min_kernel_pio. last_pio is the last buffer that was allocated.
min_kernel_pio is the lowest potential available buffer.
min_kernel_pio is modifed as contexts are allocated and deallocted.
Reviewed-by: Ramkrishna Vepa <ramkrishna.vepa@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Add a prefetch call when a packet has been stored. The nature of the
prefetch is correctly determined by the alternatives mechanism.
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
"For a some fix patches for v3.4, including a regression fix at DVB core"
Fix up trivial conflicts in Documentation/feature-removal-schedule.txt
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] gspca - sonixj: Fix a zero divide in isoc interrupt
[media] media: videobuf2-dma-contig: include header for exported symbols
[media] media: videobuf2-dma-contig: quiet sparse noise about plain integer as NULL pointer
[media] media: vb2-memops: Export vb2_get_vma symbol
[media] s5p-fimc: Correct memory allocation for VIDIOC_CREATE_BUFS
[media] s5p-fimc: Fix locking in subdev set_crop op
[media] dvb_frontend: fix a regression with DVB-S zig-zag
[media] fintek-cir: change || to &&
[media] V4L: Schedule V4L2_CID_HCENTER, V4L2_CID_VCENTER controls for removal
[media] rc: Postpone ISR registration
[media] marvell-cam: fix an ARM build error
[media] V4L: soc-camera: protect hosts during probing from overzealous user-space
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Pull networking fixes from David Miller:
"The main purpose of this pull request is to fix up the erroneous
bonding patch I applied last round. I meant to apply v4 of the patch
from Jiri but I applied v3 by accident. Mea culpa.
Also, eagle eyed Dan Carpenter noticed that openvswitch has one of
those "X = alloc(); if (!Y)" mistakes, test the proper pointer
instead."
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
openvswitch: checking wrong variable in queue_userspace_packet()
bonding: Fix LACPDU rx_dropped commit.
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The mgmt_ev_device_connected signal must be sent before any event
indications happen for sockets associated with the connection. Otherwise
e.g. device authorization for the sockets will fail with ENOTCONN as
user space things that there is no baseband link.
This patch fixes the issue by ensuring that the device_connected event
if sent (if it hasn't been so already) as soon as the first ACL data
packet arrives from the remote device.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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It fixes L2CAP socket based security level elevation during a
connection. The HID profile needs this (for keyboards) and it is the only
way to achieve the security level elevation when using the management
interface to talk to the kernel (hence the management enabling patch
being the one that exposes this issue).
It enables the userspace a security level change when the socket is
already connected and create a way to notify the socket the result of the
request. At the moment of the request the socket is made non writable, if
the request fails the connections closes, otherwise the socket is made
writable again, POLL_OUT is emmited.
Signed-off-by: Gustavo Padovan <gustavo@padovan.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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In commit b0302ab, the rtlwifi family of drivers was converted to use
asynchronous firmware loading. Unfortumately, the implementation was
racy, and the ieee80211 routines could be started before rtl_init_core()
was called to setup the data.
This patch fixes the bug noted in https://bugzilla.kernel.org/show_bug.cgi?id=43187.
Reported-by: Joshua Roys <Joshua.Roys@gtri.gatech.edu>
Tested-by: Neptune Ning <frostyplanet@gmail.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org> [3.3]
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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We set cpuid_level to -1 if there is no CPUID instruction (only
possible on i386).
Signed-off-by: Alan Cox <alan@linux.intel.com>
Link: http://lkml.kernel.org/r/20120514174059.30236.1064.stgit@bluebook
Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=12122
Cc: Avi Kivity <avi@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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3.4-rc introduced a regression when setting the LEDS. We do the right thing
but then return an error code.
Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=43144
Reported-by: Christian Casteyde
Signed-off-by: Alan Cox <alan@linux/intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Change the mechanism of enabling the force PWM mode through
regulator set mode. This can be dynamically configured now.
In the REGULATOR_MODE_FAST the force PWM is enabled and in
REGULATOR_MODE_NORMAL the force PWM is disabled.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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regulator_map_voltage_linear
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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In some chips the IRQ status registers are not contiguous in the register
map but spaced at even spaces. This is an easy case to handle with minor
changes. It is assume for this purpose that the stride for status is
equal to the stride for mask/ack registers as well.
Signed-off-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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regulator_map_voltage_linear
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Fix below build error:
CC [M] drivers/regulator/tps62360-regulator.o
drivers/regulator/tps62360-regulator.c:351:1: error: expected ',' or ';' before 'extern'
make[2]: *** [drivers/regulator/tps62360-regulator.o] Error 1
make[1]: *** [drivers/regulator] Error 2
make: *** [drivers] Error 2
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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flowctrl_write_cpu_csr uses the cpu halt offsets and vice versa. This patch
fixes this bug.
Reported-by: Dan Willemsen <dwillemsen@nvidia.com>
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
[swarren: This problem was introduced in v3.4-rc1, in commit 26fe681 "ARM:
tegra: functions to access the flowcontroller", when this file was first
added]
Signed-off-by: Stephen Warren <swarren@nvidia.com>
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Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
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fault_reason - 0x20 == ARRAY_SIZE(irq_remap_fault_reasons) is
one past the end of the array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Cc: Youquan Song <youquan.song@intel.com>
Cc: walter harms <wharms@bfs.de>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: <stable@kernel.org>
Link: http://lkml.kernel.org/r/20120513170938.GA4280@elgon.mountain
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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The recent added mxs gpio device tree bindings require gpio nodes
defined under pinctrl node too. The pinctrl-mxs driver should skip
these node for group parsing and creating.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The initial mxs pinctrl support, commit 1772311 (pinctrl: add
pinctrl-mxs support) skipped creating group from device tree pin config
node. Add it to get pin config node work for client device.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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If we fail while registering a regulator make sure we release the supply
for the regulator if there is one.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Cc: stable@vger.kernel.org
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Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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specified range
Integer division may truncate the result.
Use DIV_ROUND_UP to ensure simple linear voltage mappings falls within the
specified range.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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exists
When trying to add a new tt_local_entry, if such entry already exists, we have
to ensure that the TT_CLIENT_PENDING flag is not set, otherwise the entry will
be deleted soon.
Reported-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
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- Add routing_algo
- Remove date from README:
The date has to be updated when a patch touches the README. Therefore, nearly
every feature will modify this date. It can happens quite often that not only
one feature is currently in development or waiting on the mailinglist. This
creates merge conflicts when applying a patchset.
The date itself doesn't provide any additional information when this file is
only available in a release tarball or as part of a SCM repository.
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull the v3.5 RCU tree from Paul E. McKenney:
1) A set of improvements and fixes to the RCU_FAST_NO_HZ feature
(with more on the way for 3.6). Posted to LKML:
https://lkml.org/lkml/2012/4/23/324 (commits 1-3 and 5),
https://lkml.org/lkml/2012/4/16/611 (commit 4),
https://lkml.org/lkml/2012/4/30/390 (commit 6), and
https://lkml.org/lkml/2012/5/4/410 (commit 7, combined with
the other commits for the convenience of the tester).
2) Changes to make rcu_barrier() avoid disrupting execution of CPUs
that have no RCU callbacks. Posted to LKML:
https://lkml.org/lkml/2012/4/23/322.
3) A couple of commits that improve the efficiency of the interaction
between preemptible RCU and the scheduler, these two being all
that survived an abortive attempt to allow preemptible RCU's
__rcu_read_lock() to be inlined. The full set was posted to
LKML at https://lkml.org/lkml/2012/4/14/143, and the first and
third patches of that set remain.
4) Lai Jiangshan's algorithmic implementation of SRCU, which includes
call_srcu() and srcu_barrier(). A major feature of this new
implementation is that synchronize_srcu() no longer disturbs
the execution of other CPUs. This work is based on earlier
implementations by Peter Zijlstra and Paul E. McKenney. Posted to
LKML: https://lkml.org/lkml/2012/2/22/82.
5) A number of miscellaneous bug fixes and improvements which were
posted to LKML at: https://lkml.org/lkml/2012/4/23/353 with
subsequent updates posted to LKML.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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I see builds failing with:
CC [M] drivers/mmc/host/dw_mmc.o
In file included from drivers/mmc/host/dw_mmc.c:15:
include/linux/blkdev.h:1404: warning: 'struct task_struct' declared inside parameter list
include/linux/blkdev.h:1404: warning: its scope is only this definition or declaration, which is probably not what you want
include/linux/blkdev.h:1408: warning: 'struct task_struct' declared inside parameter list
include/linux/blkdev.h:1413: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'blk_needs_flush_plug'
make[4]: *** [drivers/mmc/host/dw_mmc.o] Error 1
This is because dw_mmc.c includes linux/blkdev.h as the very first file,
and when CONFIG_BLOCK=n, blkdev.h omits all includes.
As it requires linux/sched.h even when CONFIG_BLOCK=n, move this out of
the #ifdef.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This eliminated most of the remaining users of btfixup.
There are some complications because of the special cases we
have for sun4d, leon, and some flavors of viking.
It was found that there are no cases where a flush_page_for_dma
method was not hooked up to something, so the "noflush" iommu
methods were removed.
Add some documentation to the viking_sun4d_smp_ops to describe exactly
the hardware bug which causes us to need special TLB flushing on
sun4d.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Uses of these went away with the sun4c removal.
Signed-off-by: David S. Miller <davem@davemloft.net>
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