"goto err;" has it's own kfree_skb() call so it's a double free. We
only need to free on the "goto exit;" path.
Fixes: 8700e3e7c4 ("Soft RoCE driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
bcm_sf2 does require the MDIO_BCM_UNIMAC driver which is now dependent
on OF_MDIO but also internally uses of_mdio.c provided routines which
are guarted with OF_MDIO.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 90eff9096c ("net: phy: Allow splitting MDIO bus/device support from PHYs")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This change basically codifies what I think was already the limitations on
the busy_poll and busy_read sysctl interfaces. We weren't checking the
lower bounds and as such could input negative values. The behavior when
that was used was dependent on the architecture. In order to prevent any
issues with that I am just disabling support for values less than 0 since
this way we don't have to worry about any odd behaviors.
By limiting the sysctl values this way it also makes it consistent with how
we handle the SO_BUSY_POLL socket option since the value appears to be
reported as a signed integer value and negative values are rejected.
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Lebrun says:
====================
Performances improvement for IPv6 Segment Routing
This patch series improves the performances of IPv6 SR by optimizing skb head
reallocation and extending the use of dst_cache. The overall performances improve
by 35%.
Before patch series (SRH encap):
Result: OK: 7348320(c7347271+d1048) usec, 5000000 (1000byte,0frags)
680427pps 5443Mb/sec (5443416000bps) errors: 0
After patch series (SRH encap):
Result: OK: 4774543(c4774084+d459) usec, 5000000 (1000byte,0frags)
1047220pps 8377Mb/sec (8377760000bps) errors: 0
Baseline for plain IPv6 forwarding:
Result: OK: 4244144(c4243722+d422) usec, 5000000 (1000byte,0frags)
1178093pps 9424Mb/sec (9424744000bps) errors: 0
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
We already use dst_cache in seg6_output, when handling locally generated
packets. We extend it in seg6_input, to also handle forwarded packets, and avoid
unnecessary fib lookups.
Performances for SRH encapsulation before the patch:
Result: OK: 5656067(c5655678+d388) usec, 5000000 (1000byte,0frags)
884006pps 7072Mb/sec (7072048000bps) errors: 0
Performances after the patch:
Result: OK: 4774543(c4774084+d459) usec, 5000000 (1000byte,0frags)
1047220pps 8377Mb/sec (8377760000bps) errors: 0
Signed-off-by: David Lebrun <david.lebrun@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
To insert or encapsulate a packet with an SRH, we need a large enough skb
headroom. Currently, we are using pskb_expand_head to inconditionally increase
the size of the headroom by the amount needed by the SRH (and IPv6 header).
If this reallocation is performed by another CPU than the one that initially
allocated the skb, then when the initial CPU kfree the skb, it will enter the
__slab_free slowpath, impacting performances.
This patch replaces pskb_expand_head with skb_cow_head, that will reallocate the
skb head only if the headroom is not large enough.
Performances for SRH encapsulation before the patch:
Result: OK: 7348320(c7347271+d1048) usec, 5000000 (1000byte,0frags)
680427pps 5443Mb/sec (5443416000bps) errors: 0
Performances after the patch:
Result: OK: 5656067(c5655678+d388) usec, 5000000 (1000byte,0frags)
884006pps 7072Mb/sec (7072048000bps) errors: 0
Signed-off-by: David Lebrun <david.lebrun@uclouvain.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use setup_deferrable_timer() instead of init_timer_deferrable() to
simplify the code.
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When a filesystem is mounted on a nbd device and on a disconnect, because
of kill_bdev(), and resetting bdev size to zero, buffer_head mappings are
getting destroyed under mounted filesystem.
After a bdev size reset(i.e bdev->bd_inode->i_size = 0) on a disconnect,
followed by a sys_umount(),
generic_shutdown_super()->...
->__sync_blockdev()->...
-blkdev_writepages()->...
->do_invalidatepage()->...
-discard_buffer() is discarding superblock buffer_head assumed
to be in mapped state by ext4_commit_super().
[mlin: ported to 4.11-rc2]
Signed-off-by: Ratna Manoj Bolla <manoj.br@gmail.com
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
We can't just set the timeout on the tagset, we have to set it on the
queue as it would have been setup already at this point.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
We've been relying on the block layer to assume rq->errors being set
translates into -EIO. I noticed in testing that sometimes this isn't
true, and really there's not much of a reason to have a counter instead
of just using -EIO. So set it properly so we don't leak random numbers
to unsuspecting victims.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
We can submit IO in a processes context, which means there can be
pending signals. This isn't a fatal error for NBD, but it does require
some finesse. If the signal happens before we transmit anything then we
are ok, just requeue the request and carry on. However if we've done a
partial transmit we can't allow anything else to be transmitted on this
socket until we transmit the remaining part of the request. Deal with
this by keeping track of how much we've sent for the current request,
and if we get an ERESTARTSYS during any part of our transmission save
the state of that request and requeue the IO. If anybody tries to
submit a request that isn't our pending request then requeue that
request until we are able to service the one that is pending.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Currently we return true in blk_mq_dispatch_rq_list() if we queued IO
successfully, but we really want to return whether or not the we made
progress. Progress includes if we got an error return. If we don't,
this can lead to a hang in blk_mq_sched_dispatch_requests() when a
driver is draining IO by returning BLK_MQ_QUEUE_ERROR instead of
manually ending the IO in error and return BLK_MQ_QUEUE_OK.
Tested-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Pull VFIO fix from Alex Williamson:
"Rework sanity check for mdev driver group notifier de-registration
(Alex Williamson)"
* tag 'vfio-v4.11-rc4' of git://github.com/awilliam/linux-vfio:
vfio: Rework group release notifier warning
Pull block fixes from Jens Axboe:
"A few fixes for the current series that should go into -rc4. This
contains:
- a fix for a potential corruption of un-started requests from Ming.
- a blk-stat fix from Omar, ensuring we flush the stat batch before
checking nr_samples.
- a set of fixes from Sagi for the nvmeof family"
* 'for-linus' of git://git.kernel.dk/linux-block:
blk-mq: don't complete un-started request in timeout handler
nvme-loop: handle cpu unplug when re-establishing the controller
nvme-rdma: handle cpu unplug when re-establishing the controller
nvmet-rdma: Fix a possible uninitialized variable dereference
nvmet: confirm sq percpu has scheduled and switched to atomic
nvme-loop: fix a possible use-after-free when destroying the admin queue
blk-stat: fix blk_stat_sum() if all samples are batched
Pull ceph fix from Ilya Dryomov:
"A fix for a writeback deadlock caused by a GFP_KERNEL allocation on
the reclaim path, tagged for stable"
* tag 'ceph-for-4.11-rc4' of git://github.com/ceph/ceph-client:
libceph: force GFP_NOIO for socket allocations
Pull ARM SoC fixes from Arnd Bergmann:
- a couple of OMAP 4.11 regression fixes, including a boot regression
for SmartReflex, hypervisor mode in thumb2 mode, and reference
counting of device nodes
- a fix for cpu_idle on at91
- minor DT fixes on across several platforms: sunxi, bcm53xx, at91,
nsp, ns2, ux500, omap
- a fix to correct an API change in the reset controllers
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (22 commits)
arm64: dts: NS2: Add dma-coherent to relevant DT entries
reset: fix optional reset_control_get stubs to return NULL
ARM: sun8i: a23/a33: drop bl_en_pin GPIO pinmux in reference design DTSI
ARM: dts: sun7i: lamobo-r1: Fix CPU port RGMII settings
ARM: dts: NSP: GPIO reboot open-source
ARM: at91: pm: cpu_idle: switch DDR to power-down mode
ARM: dts: add the AB8500 clocks to the device tree
ARM: dts: imx6sx-udoo-neo: Fix reboot hang
ARM: sun8i: Fix the mali clock rate
ARM: dts: BCM5301X: Correct GIC_PPI interrupt flags
ARM: dts: BCM5301X: Fix memory start address
ARM: dts: BCM5301X: Fix UARTs on bcm953012k
Revert "ARM: at91/dt: sama5d2: Use new compatible for ohci node"
ARM: OMAP2+: Release device node after it is no longer needed.
ARM: OMAP2+: Fix device node reference counts
ARM: OMAP2+: Remove legacy gpmc-nand.c
ARM: OMAP2+: gpmc-onenand: propagate error on initialization failure
ARM: dts: am335x-pcm953: Fix legacy wakeup source binding
ARM: omap2plus_defconfig: Enable INPUT_MOUSEDEV as loadable modules
ARM: dts: am57xx-idk: tpic2810 is on I2C bus, not SPI
...
Pull xen fixes from Juergen Gross:
"Fixes for PM under Xen"
* tag 'for-linus-4.11b-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/acpi: upload PM state from init-domain to Xen
xen/acpi: Replace hard coded "ACPI0007"
Pull arm64 fixes from Will Deacon:
"There's a kaslr fix and then two patches to update our native and
compat syscall tables. Arnd asked that we take the addition of statx
to the asm-generic unistd.h via arm64, as he didn't have anything
queued in the asm-generic tree.
Summary:
- Fix mapping of kernel image under certain kaslr offsets
- Hook up new statx syscall in asm-generic syscall table
- Update compat syscall table to match arch/arm/ (pkeys and statx)"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: kaslr: Fix up the kernel image alignment
arm64: compat: Update compat syscalls
generic syscalls: Wire up statx syscall
Pull crypto fixes from Herbert Xu:
"This fixes regressions in the crypto ccp driver and the hwrng drivers
for amd and geode"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
hwrng: geode - Revert managed API changes
hwrng: amd - Revert managed API changes
crypto: ccp - Assign DMA commands to the channel's CCP
Jiri Pirko says:
====================
mlxsw: Query resources from firmware
Ido says:
Some parts of the driver already use the resource query mechanism, but
in other parts we still rely on hard coded values that may change over
time.
This patchset removes most of these remaining values and queries them
from the firmware instead.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
As explained in the previous patch, the cell size may change in future
devices, so query it from the firmware instead of hard coding it.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The sizes and thresholds of the priority group (PG) buffers are
configured in cells, which represent a specific amount of bytes.
The cell size can vary in different devices, so it's better to query it
from the firmware than hard coding it.
Refactor the code dealing with this value into different functions, so
that it will be easier to make the conversion in the next patch.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of hard coding the size of the shared buffer in the driver,
query it from the firmware, as it may change in future devices.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
We currently hard code the maximum number of ports in the driver, but
this may change in future devices, so query it from the firmware
instead.
Fallback to a maximum of 64 ports in case this number can't be queried.
This should only happen in SwitchX-2 for which this number is correct.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Instead of hard coding the number of LPM trees in the driver, query it
from the firmware, as it may change in future devices.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When vmalloc_user is used to create memory that is supposed to be mmap'd
to user space, it is necessary for the mmap cookie (eg the offset) to be
aligned to SHMLBA.
This creates a situation where all virtual mappings of the same physical
page share the same virtual cache index and guarantees VIPT coherence.
Otherwise the cache is non-coherent and the kernel will not see writes
by userspace when reading the shared page (or vice-versa).
Reported-by: Josh Beavers <josh.beavers@gmail.com>
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Jeff Kirsher says:
====================
40GbE Intel Wired LAN Driver Updates 2017-03-23
This series contains updates to i40e and i40e.txt documentation.
Jake provides all the changes in the series which are centered around
ntuple filter fixes and additional support. Fixed the current
implementation of .set_rxnfc, where we were not reading the mask field
for filter entries which was resulting in filters not behaving as
expected and not working correctly. When cleaning up after disabling
flow director support, ensure that the default input set is correctly
reprogrammed. Since the hardware only supports a single input set for
all flows of that type, the driver shall only allow the input set to
change if there are no other configured filters for that flow type, so
add support to detect when we can update the input set for each flow
type. Align the driver to other drivers to partition the ring_cookie
value into 8bits of VF index, along with 32bits of queue number instead
of using the user-def field. Added support to parse the user-def field
into a data structure format to allow future extensions of the user-def
filed by keeping all the code that read/writes the field into a single
location. Added support for flexible payloads passed via ethtool
user-def field. We support a single flexible word (2byte) value per
protocol type, and we handle the FLX_PIT register using a list of
flexible entries so that each flow type may be configured separately.
Enabled flow director filters for SCTPv4 packets using the ethtool
ntuple interface to enable filters. Updated the documentation on the
i40e driver to include the newly added support to ntuple filters.
Reduced complexity of a if-continue-else-break section of code by
taking advantage of using hlist_for_each_entry_continue() instead.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This reverts commit 7e54d9d063.
After additional regression testing, several users are experiencing
kernel panics during shutdown on e1000e devices. Reverting this
change resolves the issue.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull IOMMU fixes from Joerg Roedel:
"A few fixes piled up:
- fix a NULL-ptr dereference that happens in VT-d on some platforms
- a fix for ARM MSI region reporting, so that a sane interface makes
it to a released kernel
- fixes for leaf-checking in ARM io-page-table code
- two fixes for IO/TLB flushing code on ARM Exynos platforms"
* tag 'iommu-fixes-v4.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu: Disambiguate MSI region types
iommu/exynos: Workaround FLPD cache flush issues for SYSMMU v5
iommu/exynos: Block SYSMMU while invalidating FLPD cache
iommu/vt-d: Fix NULL pointer dereference in device_to_iommu
iommu/io-pgtable-arm-v7s: Check for leaf entry before dereferencing it
iommu/io-pgtable-arm: Check for leaf entry before dereferencing it
We need to make sure that the cq work item does not
run when we are destroying the cq. Unlike flush_work,
cancel_work_sync protects against self-requeue of the
work item (which we can do in ib_cq_poll_work).
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>--
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Pull mmc fixes from Ulf Hansson:
"Here are a couple of mmc fixes intended for v4.11 rc4.
MMC core:
- Fix initialization of HS400-ES eMMC cards
- A couple of fixes for the mmc block device driver
- Resolved a compiler warning
MMC host:
- sdhci: Do not disable IRQs while waiting for clock
- sdhci-pci: Do not disable IRQs in sdhci_intel_set_power
- sdhci-of-arasan: Fix incorrect timeout clock
- mediatek: Fix bug for setting wrong clock frequency
- sdhci-of-at91: Use regulator to fix cmd timeout errors
- ushc: Fix NULL-deref at probe
- rockchip-dw-mshc: Rename RK1108 to RV1108 in DT"
* tag 'mmc-v4.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-pci: Do not disable interrupts in sdhci_intel_set_power
mmc: sdhci: Do not disable interrupts while waiting for clock
mmc: ushc: fix NULL-deref at probe
mmc: sdhci-of-at91: Support external regulators
mmc: core: mmc_blk_rw_cmd_err - remove unused variable
mmc: mediatek: Fixed bug where clock frequency could be set wrong
mmc: block: Fix cmd error reset failure path
mmc: block: Fix is_waiting_last_req set incorrectly
mmc: core: Fix access to HS400-ES devices
mmc: sdhci-of-arasan: fix incorrect timeout clock
dt-bindings: rockchip-dw-mshc: rename RK1108 to RV1108
MotherBoard section has its "ranges" set to 0xE000_0000-0xF000_0000.
But UIO node maps 4 different areas in different memory locations
and all outside MB's ranges.
That obviously breaks UIO mappings in runtime.
Cc: Ruud Derwig <rderwig@synopsys.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Pull media fixes from Mauro Carvalho Chehab:
- dvb-usb-firmware: don't do DMA on stack
- coda/imx-vdoa: platform_driver should not be const
- bdisp: Clean up file handle in open() error path
- exynos-gsc: Do not swap cb/cr for semi planar formats
* tag 'media/v4.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] exynos-gsc: Do not swap cb/cr for semi planar formats
[media] bdisp: Clean up file handle in open() error path
[media] coda/imx-vdoa: platform_driver should not be const
[media] dvb-usb-firmware: don't do DMA on stack
Because sysctl_tcp_adv_win_scale could be changed any time, so there
is one race in tcp_win_from_space.
For example,
1.sysctl_tcp_adv_win_scale<=0 (sysctl_tcp_adv_win_scale is negative now)
2.space>>(-sysctl_tcp_adv_win_scale) (sysctl_tcp_adv_win_scale is postive now)
As a result, tcp_win_from_space returns 0. It is unexpected.
Certainly if the compiler put the sysctl_tcp_adv_win_scale into one
register firstly, then use the register directly, it would be ok.
But we could not depend on the compiler behavior.
Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Converting IPv4 address doesn't need 64-bit arithmetic.
Space savings: 10 bytes!
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-10 (-10)
function old new delta
in_aton 96 86 -10
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Netdev notification events are de-registered only when all
client iwdev instances are removed. If a single client is closed
and re-opened, netdev events could arrive even before the Control
Queue-Pair (CQP) is created, causing a NULL pointer dereference crash
in i40iw_get_cqp_request. Fix this by allowing netdev event
notification only after we have reached the INET_NOTIFIER state with
respect to device initialization.
Reported-by: Stefan Assmann <sassmann@redhat.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
The PF driver is incorrectly resetting Octeon when the module parameter
"fw_type=none" is there. "fw_type=none" means the PF should not load any
firmware to the NIC because Octeon is already running preloaded firmware.
Fix it by putting an if (fw_type != none) around the reset code.
Because the Octeon reset is now conditionally gone, when unloading the
driver, conditionally send the RESET_PF command to the firmware who will
then free up PF-related data structures.
Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com>
Signed-off-by: Satanand Burla <satananda.burla@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Certain system process significant unconnected UDP workload.
It would be preferrable to disable UDP early demux for those systems
and enable it for TCP only.
By disabling UDP demux, we see these slight gains on an ARM64 system-
782 -> 788Mbps unconnected single stream UDPv4
633 -> 654Mbps unconnected UDPv4 different sources
The performance impact can change based on CPU architecure and cache
sizes. There will not much difference seen if entire UDP hash table
is in cache.
Both sysctls are enabled by default to preserve existing behavior.
v1->v2: Change function pointer instead of adding conditional as
suggested by Stephen.
v2->v3: Read once in callers to avoid issues due to compiler
optimizations. Also update commit message with the tests.
v3->v4: Store and use read once result instead of querying pointer
again incorrectly.
v4->v5: Refactor to avoid errors due to compilation with IPV6={m,n}
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Suggested-by: Eric Dumazet <edumazet@google.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Cc: Tom Herbert <tom@herbertland.com>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull drm fixes from Dave Airlie:
- one core drm/fbdev regression fix
- a set of i915 fixes including a few GVT related fixes, along with
some reset fixes
- one new PCI id for amdgpu, and some minor workaround regression
fixes
- .. and a set of exynos fixes, dropping support for an old unsupported
SoC, some vblank timing fixes, and an info leak fix
* tag 'drm-fixes-for-v4.11-rc4' of git://people.freedesktop.org/~airlied/linux: (34 commits)
drm/fb-helper: Allow var->x/yres(_virtual) < fb->width/height again
drm/i915: make context status notifier head be per engine
drm/i915: Avoid rcu_barrier() from reclaim paths (shrinker)
drm/exynos/dsi: make te-gpios optional
drm/exynos: Print kernel pointers in a restricted form
drm/exynos/decon5433: fix software trigger mask
drm/exynos/fimd: signal frame done interrupt at front porch
drm/exynos/decon5433: signal frame done interrupt at front porch
drm/exynos/decon5433: fix vblank event handling
drm/exynos: move crtc event handling to drivers callbacks
drm/exynos: Remove support for Exynos4415 (SoC not supported anymore)
drm/exynos/decon5433: & vs | typo
drm/amd/amdgpu: add POLARIS12 PCI ID
drm/i915/gvt: Fix gvt scheduler interval time
drm/i915/gvt: GVT pin/unpin shadow context
drm/i915/gvt: scan shadow indirect context image when valid
drm/i915/kvmgt: fix suspicious rcu dereference usage
drm/i915/gvt: add enable_execlists check before enable gvt
drm/i915/gvt: Remove bogus retry around i915_wait_request
drm/i915/gvt: correct the ggtt valid bit check in pipe control command
...
Florian Fainelli says:
====================
net: systemport: TX/NAPI improvements
This patch series builds up on Doug's latest changes done in BCMGENET to reduce
the number of spurious interrupts in NAPI, simplify pointer arithmetic and
finally tracking of per TX ring statistics to be SMP friendly.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Similar to c298ede2fe ("net: bcmgenet: simplify circular pointer
arithmetic") we don't need to complex arthimetic since we always have a
ring size that is a power of 2.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Do something similar to commit d5810ca325 ("net: bcmgenet: clear
status to reduce spurious interrupts") and clear interrupts right before
servicing them. This reduces the number of interrupts by 10K
interrupts/sec for a TX TCP session 1Gbits/sec.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
bcm_sysport_tx_reclaim_one() is currently summing TX bytes/packets in a
way that is not SMP friendly, mutliples CPUs could run
bcm_sysport_tx_reclaim_one() independently and still update
stats->tx_bytes and stats->tx_packets, cloberring the other CPUs
statistics.
Fix this by tracking per TX rings the number of bytes, packets,
dropped and errors statistics, and provide a bcm_sysport_get_nstats()
function which aggregates everything and returns a consistent output.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli says:
====================
net: phy: Allow splitting MDIO bus/device support
This patch series allows building support for MDIO bus controllers which
are sometimes usable and necessary in cases where there are no Ethernet PHYs.
Changes in v3:
- corrected of_mdio compile guards for prototypes vs. stubs
- added a missing OF_MDIO dependency for MDIO_BCM_UNIMAC
- fixed Kbuild bot reported errors against mdio-bitbang
Changes in v2:
- implement Russell's feedback
- solve the circular dependency in the CONFIG_MDIO_DEVICE + CONFIG_PHYLIB case
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Introduce a new configuration symbol: MDIO_DEVICE which allows building
the MDIO devices and bus code, without pulling in the entire Ethernet
PHY library and devices code.
PHYLIB nows select MDIO_DEVICE and the relevant Makefile files are
updated to reflect that.
When MDIO_DEVICE (MDIO bus/device only) is selected, but not PHYLIB, we
have mdio-bus.ko as a loadable module, and it does not have a
module_exit() function because the safety of removing a bus class is
unclear.
When both MDIO_DEVICE and PHYLIB are enabled, we need to assemble
everything into a common loadable module: libphy.ko because of nasty
circular dependencies between phy.c, phy_device.c and mdio_bus.c which
are really tough to untangle.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
