Merge tag 'v4.20' into for-linus

Sync with mainline to get linux/overflow.h among other things.

Merge tag 'v4.20' into next

Merge with mainline to bring in the new APIs.

Merge tag 'v4.20-rc7' of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into fbdev-for-next

Linux 4.20-rc7

Sync with upstream (which now contains fbdev-v4.20 changes) to
prepare a b

Merge tag 'v4.20-rc7' of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into fbdev-for-next

Linux 4.20-rc7

Sync with upstream (which now contains fbdev-v4.20 changes) to
prepare a base for fbdev-v4.21 changes.

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Merge drm/drm-next into drm-intel-next-queued

Pull in v4.20-rc3 via drm-next.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

Merge remote-tracking branch 'drm/drm-next' into drm-misc-next

drm-next is forwarded to v4.20-rc1, and we need this to make
a patch series apply.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst

Merge remote-tracking branch 'drm/drm-next' into drm-misc-next

drm-next is forwarded to v4.20-rc1, and we need this to make
a patch series apply.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

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Merge tag 'v4.20-rc2' into next-general

Sync to Linux 4.20-rc2 for downstream developers.

Merge tag 'v4.20-rc1' into omap-for-v4.21/dt-ti-sysc

Linux 4.20-rc1

Merge branch 'fixes-dts' into omap-for-v4.20/fixes

Merge branch 'linus' into perf/urgent, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge branch 'linus' into x86/urgent, to refresh the tree

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

1) Add VF IPSEC offload support in ixgbe, from Shannon Nelson.

2) Add zero-copy AF_X

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

1) Add VF IPSEC offload support in ixgbe, from Shannon Nelson.

2) Add zero-copy AF_XDP support to i40e, from Björn Töpel.

3) All in-tree drivers are converted to {g,s}et_link_ksettings() so we
can get rid of the {g,s}et_settings ethtool callbacks, from Michal
Kubecek.

4) Add software timestamping to veth driver, from Michael Walle.

5) More work to make packet classifiers and actions lockless, from Vlad
Buslov.

6) Support sticky FDB entries in bridge, from Nikolay Aleksandrov.

7) Add ipv6 version of IP_MULTICAST_ALL sockopt, from Andre Naujoks.

8) Support batching of XDP buffers in vhost_net, from Jason Wang.

9) Add flow dissector BPF hook, from Petar Penkov.

10) i40e vf --> generic iavf conversion, from Jesse Brandeburg.

11) Add NLA_REJECT netlink attribute policy type, to signal when users
provide attributes in situations which don't make sense. From
Johannes Berg.

12) Switch TCP and fair-queue scheduler over to earliest departure time
model. From Eric Dumazet.

13) Improve guest receive performance by doing rx busy polling in tx
path of vhost networking driver, from Tonghao Zhang.

14) Add per-cgroup local storage to bpf

15) Add reference tracking to BPF, from Joe Stringer. The verifier can
now make sure that references taken to objects are properly released
by the program.

16) Support in-place encryption in TLS, from Vakul Garg.

17) Add new taprio packet scheduler, from Vinicius Costa Gomes.

18) Lots of selftests additions, too numerous to mention one by one here
but all of which are very much appreciated.

19) Support offloading of eBPF programs containing BPF to BPF calls in
nfp driver, frm Quentin Monnet.

20) Move dpaa2_ptp driver out of staging, from Yangbo Lu.

21) Lots of u32 classifier cleanups and simplifications, from Al Viro.

22) Add new strict versions of netlink message parsers, and enable them
for some situations. From David Ahern.

23) Evict neighbour entries on carrier down, also from David Ahern.

24) Support BPF sk_msg verdict programs with kTLS, from Daniel Borkmann
and John Fastabend.

25) Add support for filtering route dumps, from David Ahern.

26) New igc Intel driver for 2.5G parts, from Sasha Neftin et al.

27) Allow vxlan enslavement to bridges in mlxsw driver, from Ido
Schimmel.

28) Add queue and stack map types to eBPF, from Mauricio Vasquez B.

29) Add back byte-queue-limit support to r8169, with all the bug fixes
in other areas of the driver it works now! From Florian Westphal and
Heiner Kallweit.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2147 commits)
tcp: add tcp_reset_xmit_timer() helper
qed: Fix static checker warning
Revert "be2net: remove desc field from be_eq_obj"
Revert "net: simplify sock_poll_wait"
net: socionext: Reset tx queue in ndo_stop
net: socionext: Add dummy PHY register read in phy_write()
net: socionext: Stop PHY before resetting netsec
net: stmmac: Set OWN bit for jumbo frames
arm64: dts: stratix10: Support Ethernet Jumbo frame
tls: Add maintainers
net: ethernet: ti: cpsw: unsync mcast entries while switch promisc mode
octeontx2-af: Support for NIXLF's UCAST/PROMISC/ALLMULTI modes
octeontx2-af: Support for setting MAC address
octeontx2-af: Support for changing RSS algorithm
octeontx2-af: NIX Rx flowkey configuration for RSS
octeontx2-af: Install ucast and bcast pkt forwarding rules
octeontx2-af: Add LMAC channel info to NIXLF_ALLOC response
octeontx2-af: NPC MCAM and LDATA extract minimal configuration
octeontx2-af: Enable packet length and csum validation
octeontx2-af: Support for VTAG strip and capture
...

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Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2018-10-21

The following pull-request contains BPF updates for yo

Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
pull-request: bpf-next 2018-10-21

The following pull-request contains BPF updates for your *net-next* tree.

The main changes are:

1) Implement two new kind of BPF maps, that is, queue and stack
map along with new peek, push and pop operations, from Mauricio.

2) Add support for MSG_PEEK flag when redirecting into an ingress
psock sk_msg queue, and add a new helper bpf_msg_push_data() for
insert data into the message, from John.

3) Allow for BPF programs of type BPF_PROG_TYPE_CGROUP_SKB to use
direct packet access for __skb_buff, from Song.

4) Use more lightweight barriers for walking perf ring buffer for
libbpf and perf tool as well. Also, various fixes and improvements
from verifier side, from Daniel.

5) Add per-symbol visibility for DSO in libbpf and hide by default
global symbols such as netlink related functions, from Andrey.

6) Two improvements to nfp's BPF offload to check vNIC capabilities
in case prog is shared with multiple vNICs and to protect against
mis-initializing atomic counters, from Jakub.

7) Fix for bpftool to use 4 context mode for the nfp disassembler,
also from Jakub.

8) Fix a return value comparison in test_libbpf.sh and add several
bpftool improvements in bash completion, documentation of bpf fs
restrictions and batch mode summary print, from Quentin.

9) Fix a file resource leak in BPF selftest's load_kallsyms()
helper, from Peng.

10) Fix an unused variable warning in map_lookup_and_delete_elem(),
from Alexei.

11) Fix bpf_skb_adjust_room() signature in BPF UAPI helper doc,
from Nicolas.

12) Add missing executables to .gitignore in BPF selftests, from Anders.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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Merge branch 'improve_perf_barriers'

Daniel Borkmann says:

====================
This set first adds smp_* barrier variants to tools infrastructure
and updates perf and libbpf to make use of them. F

Merge branch 'improve_perf_barriers'

Daniel Borkmann says:

====================
This set first adds smp_* barrier variants to tools infrastructure
and updates perf and libbpf to make use of them. For details, please
see individual patches, thanks!

Arnaldo, if there are no objections, could this be routed via bpf-next
with Acked-by's due to later dependencies in libbpf? Alternatively,
I could also get the 2nd patch out during merge window, but perhaps
it's okay to do in one go as there shouldn't be much conflict in perf
itself.

Thanks!

v1 -> v2:
- add common helper and switch to acquire/release variants
when possible, thanks Peter!
====================

Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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tools, perf: add and use optimized ring_buffer_{read_head, write_tail} helpers

Currently, on x86-64, perf uses LFENCE and MFENCE (rmb() and mb(),
respectively) when processing events from the perf r

tools, perf: add and use optimized ring_buffer_{read_head, write_tail} helpers

Currently, on x86-64, perf uses LFENCE and MFENCE (rmb() and mb(),
respectively) when processing events from the perf ring buffer which
is unnecessarily expensive as we can do more lightweight in particular
given this is critical fast-path in perf.

According to Peter rmb()/mb() were added back then via a94d342b9cb0
("tools/perf: Add required memory barriers") at a time where kernel
still supported chips that needed it, but nowadays support for these
has been ditched completely, therefore we can fix them up as well.

While for x86-64, replacing rmb() and mb() with smp_*() variants would
result in just a compiler barrier for the former and LOCK + ADD for
the latter (__sync_synchronize() uses slower MFENCE by the way), Peter
suggested we can use smp_{load_acquire,store_release}() instead for
architectures where its implementation doesn't resolve in slower smp_mb().
Thus, e.g. in x86-64 we would be able to avoid CPU barrier entirely due
to TSO. For architectures where the latter needs to use smp_mb() e.g.
on arm, we stick to cheaper smp_rmb() variant for fetching the head.

This work adds helpers ring_buffer_read_head() and ring_buffer_write_tail()
for tools infrastructure that either switches to smp_load_acquire() for
architectures where it is cheaper or uses READ_ONCE() + smp_rmb() barrier
for those where it's not in order to fetch the data_head from the perf
control page, and it uses smp_store_release() to write the data_tail.
Latter is smp_mb() + WRITE_ONCE() combination or a cheaper variant if
architecture allows for it. Those that rely on smp_rmb() and smp_mb() can
further improve performance in a follow up step by implementing the two
under tools/arch/*/include/asm/barrier.h such that they don't have to
fallback to rmb() and mb() in tools/include/asm/barrier.h.

Switch perf to use ring_buffer_read_head() and ring_buffer_write_tail()
so it can make use of the optimizations. Later, we convert libbpf as
well to use the same helpers.

Side note [0]: the topic has been raised of whether one could simply use
the C11 gcc builtins [1] for the smp_load_acquire() and smp_store_release()
instead:

__atomic_load_n(ptr, __ATOMIC_ACQUIRE);
__atomic_store_n(ptr, val, __ATOMIC_RELEASE);

Kernel and (presumably) tooling shipped along with the kernel has a
minimum requirement of being able to build with gcc-4.6 and the latter
does not have C11 builtins. While generally the C11 memory models don't
align with the kernel's, the C11 load-acquire and store-release alone
/could/ suffice, however. Issue is that this is implementation dependent
on how the load-acquire and store-release is done by the compiler and
the mapping of supported compilers must align to be compatible with the
kernel's implementation, and thus needs to be verified/tracked on a
case by case basis whether they match (unless an architecture uses them
also from kernel side). The implementations for smp_load_acquire() and
smp_store_release() in this patch have been adapted from the kernel side
ones to have a concrete and compatible mapping in place.

[0] http://patchwork.ozlabs.org/patch/985422/
[1] https://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Merge branch 'fix/intel' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-intel

Merge tag 'v4.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into fbdev-for-next

Linux 4.15-rc5

Merge tag 'drm-intel-next-2017-12-14' into gvt-next

- Fix documentation build issues (Randy, Markus)
- Fix timestamp frequency calculation for perf on CNL (Lionel)
- New DMC firmware for Skylake (An

Merge tag 'drm-intel-next-2017-12-14' into gvt-next

- Fix documentation build issues (Randy, Markus)
- Fix timestamp frequency calculation for perf on CNL (Lionel)
- New DMC firmware for Skylake (Anusha)
- GTT flush fixes and other GGTT write track and refactors (Chris)
- Taint kernel when GPU reset fails (Chris)
- Display workarounds organization (Lucas)
- GuC and HuC initialization clean-up and fixes (Michal)
- Other fixes around GuC submission (Michal)
- Execlist clean-ups like caching ELSP reg offset and improving log readability (Chri\
s)
- Many other improvements on our logs and dumps (Chris)
- Restore GT performance in headless mode with DMC loaded (Tvrtko)
- Stop updating legacy fb parameters since FBC is not using anymore (Daniel)
- More selftest improvements (Chris)
- Preemption fixes and improvements (Chris)
- x86/early-quirks improvements for Intel graphics stolen memory. (Joonas, Matthew)
- Other improvements on Stolen Memory code to be resource centric. (Matthew)
- Improvements and fixes on fence allocation/release (Chris).

GVT:

- fixes for two coverity scan errors (Colin)
- mmio switch code refine (Changbin)
- more virtual display dmabuf fixes (Tina/Gustavo)
- misc cleanups (Pei)
- VFIO mdev display dmabuf interface and gvt support (Tina)
- VFIO mdev opregion support/fixes (Tina/Xiong/Chris)
- workload scheduling optimization (Changbin)
- preemption fix and temporal workaround (Zhenyu)
- and misc fixes after refactor (Chris)

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Sync to v4.15-rc3 for security subsystem developers to work against.

Merge airlied/drm-next into drm-intel-next-queued

Chris requested this backmerge for a reconciliation on
drm_print.h between drm-misc-next and drm-intel-next-queued

Signed-off-by: Rodrigo Vivi <rod

Merge airlied/drm-next into drm-intel-next-queued

Chris requested this backmerge for a reconciliation on
drm_print.h between drm-misc-next and drm-intel-next-queued

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

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Merge arlied/drm-next into drm-misc-next

We need to pull 66660d4cf21b (drm: add connector info/property for
non-desktop displays [v2]) into drm-misc-next to continue the development
of the display r

Merge arlied/drm-next into drm-misc-next

We need to pull 66660d4cf21b (drm: add connector info/property for
non-desktop displays [v2]) into drm-misc-next to continue the development
of the display rotation series.

Effectively this also pulls 4.15-r2 into drm-misc-next.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com>

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Merge branch 'fix/amd' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-amd

Merge tag 'v4.15-rc1' into next-seccomp

Linux 4.15-rc1

Merge branch 'dts-fixes' into omap-for-v4.15/fixes-dt

Merge branch 'soc-fixes' into omap-for-v4.15/fixes

Merge tag 'v4.15-rc1' into patchwork

Linux 4.15-rc1

* tag 'v4.15-rc1': (12179 commits)
Linux 4.15-rc1
ARM: BUG if jumping to usermode address in kernel mode
m68k/macboing: Fix missed timer ca

Merge tag 'v4.15-rc1' into patchwork

Linux 4.15-rc1

* tag 'v4.15-rc1': (12179 commits)
Linux 4.15-rc1
ARM: BUG if jumping to usermode address in kernel mode
m68k/macboing: Fix missed timer callback assignment
afs: remove redundant assignment of dvnode to itself
afs: cell: Remove unnecessary code in afs_lookup_cell
afs: Fix signal handling in some file ops
afs: Fix some dentry handling in dir ops and missing key_puts
afs: Make afs_write_begin() avoid writing to a page that's being stored
sched/debug: Fix task state recording/printout
x86/decoder: Add new TEST instruction pattern
x86/PCI: Remove unused HyperTransport interrupt support
x86/umip: Fix insn_get_code_seg_params()'s return value
x86/boot/KASLR: Remove unused variable
genirq/matrix: Make - vs ?: Precedence explicit
irqchip/imgpdc: Use resource_size function on resource object
irqchip/qcom: Fix u32 comparison with value less than zero
ipvlan: Fix insufficient skb linear check for ipv6 icmp
ipvlan: Fix insufficient skb linear check for arp
geneve: only configure or fill UDP_ZERO_CSUM6_RX/TX info when CONFIG_IPV6
net: dsa: bcm_sf2: Clear IDDQ_GLOBAL_PWR bit for PHY
...

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