Commit graph

114370 commits

Author SHA1 Message Date
Martin Schwidefsky
38f2c691a4 s390: improve wait logic of stop_machine
The stop_machine loop to advance the state machine and to wait for all
affected CPUs to check-in calls cpu_relax_yield in a tight loop until
the last missing CPUs acknowledged the state transition.

On a virtual system where not all logical CPUs are backed by real CPUs
all the time it can take a while for all CPUs to check-in. With the
current definition of cpu_relax_yield a diagnose 0x44 is done which
tells the hypervisor to schedule *some* other CPU. That can be any
CPU and not necessarily one of the CPUs that need to run in order to
advance the state machine. This can lead to a pretty bad diagnose 0x44
storm until the last missing CPU finally checked-in.

Replace the undirected cpu_relax_yield based on diagnose 0x44 with a
directed yield. Each CPU in the wait loop will pick up the next CPU
in the cpumask of stop_machine. The diagnose 0x9c is used to tell the
hypervisor to run this next CPU instead of the current one. If there
is only a limited number of real CPUs backing the virtual CPUs we
end up with the real CPUs passed around in a round-robin fashion.

[heiko.carstens@de.ibm.com]:
    Use cpumask_next_wrap as suggested by Peter Zijlstra.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2019-06-15 12:25:52 +02:00
Heiko Carstens
7928260539 processor: remove spin_cpu_yield
spin_cpu_yield is unused, therefore remove it.

Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2019-06-15 12:25:49 +02:00
Borislav Petkov
78f4e932f7 x86/microcode, cpuhotplug: Add a microcode loader CPU hotplug callback
Adric Blake reported the following warning during suspend-resume:

  Enabling non-boot CPUs ...
  x86: Booting SMP configuration:
  smpboot: Booting Node 0 Processor 1 APIC 0x2
  unchecked MSR access error: WRMSR to 0x10f (tried to write 0x0000000000000000) \
   at rIP: 0xffffffff8d267924 (native_write_msr+0x4/0x20)
  Call Trace:
   intel_set_tfa
   intel_pmu_cpu_starting
   ? x86_pmu_dead_cpu
   x86_pmu_starting_cpu
   cpuhp_invoke_callback
   ? _raw_spin_lock_irqsave
   notify_cpu_starting
   start_secondary
   secondary_startup_64
  microcode: sig=0x806ea, pf=0x80, revision=0x96
  microcode: updated to revision 0xb4, date = 2019-04-01
  CPU1 is up

The MSR in question is MSR_TFA_RTM_FORCE_ABORT and that MSR is emulated
by microcode. The log above shows that the microcode loader callback
happens after the PMU restoration, leading to the conjecture that
because the microcode hasn't been updated yet, that MSR is not present
yet, leading to the #GP.

Add a microcode loader-specific hotplug vector which comes before
the PERF vectors and thus executes earlier and makes sure the MSR is
present.

Fixes: 400816f60c ("perf/x86/intel: Implement support for TSX Force Abort")
Reported-by: Adric Blake <promarbler14@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Cc: x86@kernel.org
Link: https://bugzilla.kernel.org/show_bug.cgi?id=203637
2019-06-15 10:00:29 +02:00
Linus Torvalds
0011572c88 Merge branch 'for-5.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
 "This has an unusually high density of tricky fixes:

   - task_get_css() could deadlock when it races against a dying cgroup.

   - cgroup.procs didn't list thread group leaders with live threads.

     This could mislead readers to think that a cgroup is empty when
     it's not. Fixed by making PROCS iterator include dead tasks. I made
     a couple mistakes making this change and this pull request contains
     a couple follow-up patches.

   - When cpusets run out of online cpus, it updates cpusmasks of member
     tasks in bizarre ways. Joel improved the behavior significantly"

* 'for-5.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cpuset: restore sanity to cpuset_cpus_allowed_fallback()
  cgroup: Fix css_task_iter_advance_css_set() cset skip condition
  cgroup: css_task_iter_skip()'d iterators must be advanced before accessed
  cgroup: Include dying leaders with live threads in PROCS iterations
  cgroup: Implement css_task_iter_skip()
  cgroup: Call cgroup_release() before __exit_signal()
  docs cgroups: add another example size for hugetlb
  cgroup: Use css_tryget() instead of css_tryget_online() in task_get_css()
2019-06-14 17:46:14 -10:00
Linus Torvalds
6aa7a22b97 drm-fixes for 5.2-rc5:
- fix regression on amdgpu on SI
 - fix edid override regression
 - driver fixes: amdgpu, i915, mediatek, meson, panfrost
 - fix writecombine for vmap in gem-shmem helper (used by panfrost)
 - add more panel quirks
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Merge tag 'drm-fixes-2019-06-14' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Daniel Vetter:
 "Nothing unsettling here, also not aware of anything serious still
  pending.

  The edid override regression fix took a bit longer since this seems to
  be an area with an overabundance of bad options. But the fix we have
  now seems like a good path forward.

  Next week it should be back to Dave.

  Summary:

   - fix regression on amdgpu on SI

   - fix edid override regression

   - driver fixes: amdgpu, i915, mediatek, meson, panfrost

   - fix writecombine for vmap in gem-shmem helper (used by panfrost)

   - add more panel quirks"

* tag 'drm-fixes-2019-06-14' of git://anongit.freedesktop.org/drm/drm: (25 commits)
  drm/amdgpu: return 0 by default in amdgpu_pm_load_smu_firmware
  drm/amdgpu: Fix bounds checking in amdgpu_ras_is_supported()
  drm: add fallback override/firmware EDID modes workaround
  drm/edid: abstract override/firmware EDID retrieval
  drm/i915/perf: fix whitelist on Gen10+
  drm/i915/sdvo: Implement proper HDMI audio support for SDVO
  drm/i915: Fix per-pixel alpha with CCS
  drm/i915/dmc: protect against reading random memory
  drm/i915/dsi: Use a fuzzy check for burst mode clock check
  drm/amdgpu/{uvd,vcn}: fetch ring's read_ptr after alloc
  drm/panfrost: Require the simple_ondemand governor
  drm/panfrost: make devfreq optional again
  drm/gem_shmem: Use a writecombine mapping for ->vaddr
  drm: panel-orientation-quirks: Add quirk for GPD MicroPC
  drm: panel-orientation-quirks: Add quirk for GPD pocket2
  drm/meson: fix G12A primary plane disabling
  drm/meson: fix primary plane disabling
  drm/meson: fix G12A HDMI PLL settings for 4K60 1000/1001 variations
  drm/mediatek: call mtk_dsi_stop() after mtk_drm_crtc_atomic_disable()
  drm/mediatek: clear num_pipes when unbind driver
  ...
2019-06-14 17:34:45 -10:00
Vivien Didelot
68b2d4a844 net: dsa: make cpu_dp non const
A port may trigger operations on its dedicated CPU port, so using
cpu_dp as const will raise warnings. Make cpu_dp non const.

Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 20:20:07 -07:00
Eric Dumazet
ce27ec6064 net: add high_order_alloc_disable sysctl/static key
>From linux-3.7, (commit 5640f76858 "net: use a per task frag
allocator") TCP sendmsg() has preferred using order-3 allocations.

While it gives good results for most cases, we had reports
that heavy uses of TCP over loopback were hitting a spinlock
contention in page allocations/freeing.

This commits adds a sysctl so that admins can opt-in
for order-0 allocations. Hopefully mm layer might optimize
order-3 allocations in the future since it could give us
a nice boost  (see 8 lines of following benchmark)

The following benchmark shows a win when more than 8 TCP_STREAM
threads are running (56 x86 cores server in my tests)

for thr in {1..30}
do
 sysctl -wq net.core.high_order_alloc_disable=0
 T0=`./super_netperf $thr -H 127.0.0.1 -l 15`
 sysctl -wq net.core.high_order_alloc_disable=1
 T1=`./super_netperf $thr -H 127.0.0.1 -l 15`
 echo $thr:$T0:$T1
done

1: 49979: 37267
2: 98745: 76286
3: 141088: 110051
4: 177414: 144772
5: 197587: 173563
6: 215377: 208448
7: 241061: 234087
8: 267155: 263373
9: 295069: 297402
10: 312393: 335213
11: 340462: 368778
12: 371366: 403954
13: 412344: 443713
14: 426617: 473580
15: 474418: 507861
16: 503261: 538539
17: 522331: 563096
18: 532409: 567084
19: 550824: 605240
20: 525493: 641988
21: 564574: 665843
22: 567349: 690868
23: 583846: 710917
24: 588715: 736306
25: 603212: 763494
26: 604083: 792654
27: 602241: 796450
28: 604291: 797993
29: 611610: 833249
30: 577356: 841062

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 20:18:28 -07:00
Eric Dumazet
0b7d7f6b22 tcp: add tcp_tx_skb_cache sysctl
Feng Tang reported a performance regression after introduction
of per TCP socket tx/rx caches, for TCP over loopback (netperf)

There is high chance the regression is caused by a change on
how well the 32 KB per-thread page (current->task_frag) can
be recycled, and lack of pcp caches for order-3 pages.

I could not reproduce the regression myself, cpus all being
spinning on the mm spinlocks for page allocs/freeing, regardless
of enabling or disabling the per tcp socket caches.

It seems best to disable the feature by default, and let
admins enabling it.

MM layer either needs to provide scalable order-3 pages
allocations, or could attempt a trylock on zone->lock if
the caller only attempts to get a high-order page and is
able to fallback to order-0 ones in case of pressure.

Tests run on a 56 cores host (112 hyper threads)

-	35.49%	netperf 		 [kernel.vmlinux]	  [k] queued_spin_lock_slowpath
   - 35.49% queued_spin_lock_slowpath
	  - 18.18% get_page_from_freelist
		 - __alloc_pages_nodemask
			- 18.18% alloc_pages_current
				 skb_page_frag_refill
				 sk_page_frag_refill
				 tcp_sendmsg_locked
				 tcp_sendmsg
				 inet_sendmsg
				 sock_sendmsg
				 __sys_sendto
				 __x64_sys_sendto
				 do_syscall_64
				 entry_SYSCALL_64_after_hwframe
				 __libc_send
	  + 17.31% __free_pages_ok
+	31.43%	swapper 		 [kernel.vmlinux]	  [k] intel_idle
+	 9.12%	netperf 		 [kernel.vmlinux]	  [k] copy_user_enhanced_fast_string
+	 6.53%	netserver		 [kernel.vmlinux]	  [k] copy_user_enhanced_fast_string
+	 0.69%	netserver		 [kernel.vmlinux]	  [k] queued_spin_lock_slowpath
+	 0.68%	netperf 		 [kernel.vmlinux]	  [k] skb_release_data
+	 0.52%	netperf 		 [kernel.vmlinux]	  [k] tcp_sendmsg_locked
	 0.46%	netperf 		 [kernel.vmlinux]	  [k] _raw_spin_lock_irqsave

Fixes: 472c2e07ee ("tcp: add one skb cache for tx")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 20:18:28 -07:00
Eric Dumazet
ede61ca474 tcp: add tcp_rx_skb_cache sysctl
Instead of relying on rps_needed, it is safer to use a separate
static key, since we do not want to enable TCP rx_skb_cache
by default. This feature can cause huge increase of memory
usage on hosts with millions of sockets.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 20:18:28 -07:00
Eric Dumazet
a8e11e5c56 sysctl: define proc_do_static_key()
Convert proc_dointvec_minmax_bpf_stats() into a more generic
helper, since we are going to use jump labels more often.

Note that sysctl_bpf_stats_enabled is removed, since
it is no longer needed/used.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 20:18:27 -07:00
Eric Dumazet
d6fb396cfa ipv4: tcp: fix ACK/RST sent with a transmit delay
If we want to set a EDT time for the skb we want to send
via ip_send_unicast_reply(), we have to pass a new parameter
and initialize ipc.sockc.transmit_time with it.

This fixes the EDT time for ACK/RST packets sent on behalf of
a TIME_WAIT socket.

Fixes: a842fe1425 ("tcp: add optional per socket transmit delay")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 19:51:12 -07:00
David S. Miller
b4a6d9abeb mlx5-updates-2019-06-13
Mlx5 devlink health fw reporters and sw reset support
 
 This series provides mlx5 firmware reset support and firmware devlink health
 reporters.
 
 1) Add initial mlx5 kernel documentation and include devlink health reporters
 
 2) Add CR-Space access and FW Crdump snapshot support via devlink region_snapshot
 
 3) Issue software reset upon FW asserts
 
 4) Add fw and fw_fatal devlink heath reporters to follow fw errors indication by
 dump and recover procedures and enable trigger these functionality by user.
 
 4.1) fw reporter:
 The fw reporter implements diagnose and dump callbacks.
 It follows symptoms of fw error such as fw syndrome by triggering
 fw core dump and storing it and any other fw trace into the dump buffer.
 The fw reporter diagnose command can be triggered any time by the user to check
 current fw status.
 
 4.2) fw_fatal repoter:
 The fw_fatal reporter implements dump and recover callbacks.
 It follows fatal errors indications by CR-space dump and recover flow.
 The CR-space dump uses vsc interface which is valid even if the FW command
 interface is not functional, which is the case in most FW fatal errors. The
 CR-space dump is stored as a memory region snapshot to ease read by address.
 The recover function runs recover flow which reloads the driver and triggers fw
 reset if needed.
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Merge tag 'mlx5-updates-2019-06-13' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-updates-2019-06-13

Mlx5 devlink health fw reporters and sw reset support

This series provides mlx5 firmware reset support and firmware devlink health
reporters.

1) Add initial mlx5 kernel documentation and include devlink health reporters

2) Add CR-Space access and FW Crdump snapshot support via devlink region_snapshot

3) Issue software reset upon FW asserts

4) Add fw and fw_fatal devlink heath reporters to follow fw errors indication by
dump and recover procedures and enable trigger these functionality by user.

4.1) fw reporter:
The fw reporter implements diagnose and dump callbacks.
It follows symptoms of fw error such as fw syndrome by triggering
fw core dump and storing it and any other fw trace into the dump buffer.
The fw reporter diagnose command can be triggered any time by the user to check
current fw status.

4.2) fw_fatal repoter:
The fw_fatal reporter implements dump and recover callbacks.
It follows fatal errors indications by CR-space dump and recover flow.
The CR-space dump uses vsc interface which is valid even if the FW command
interface is not functional, which is the case in most FW fatal errors. The
CR-space dump is stored as a memory region snapshot to ease read by address.
The recover function runs recover flow which reloads the driver and triggers fw
reset if needed.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 19:44:29 -07:00
Willem de Bruijn
f01c373fbe locking/static_key: always define static_branch_deferred_inc
This interface is currently only defined if CONFIG_JUMP_LABEL. Make it
available also when jump labels are off.

Signed-off-by: Willem de Bruijn <willemb@google.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 19:31:47 -07:00
Martin Blumenstingl
7c86f20d15 net: stmmac: use GPIO descriptors in stmmac_mdio_reset
Switch stmmac_mdio_reset to use GPIO descriptors. GPIO core handles the
"snps,reset-gpio" for GPIO descriptors so we don't need to take care of
it inside the driver anymore.

The advantage of this is that we now preserve the GPIO flags which are
passed via devicetree. This is required on some newer Amlogic boards
which use an Open Drain pin for the reset GPIO. This pin can only output
a LOW signal or switch to input mode but it cannot output a HIGH signal.
There are already devicetree bindings for these special cases and GPIO
core already takes care of them but only if we use GPIO descriptors
instead of GPIO numbers.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 19:08:40 -07:00
YueHaibing
7f94208c8f bpf: Fix build error without CONFIG_INET
If CONFIG_INET is not set, building fails:

kernel/bpf/verifier.o: In function `check_mem_access':
verifier.c: undefined reference to `bpf_xdp_sock_is_valid_access'
kernel/bpf/verifier.o: In function `convert_ctx_accesses':
verifier.c: undefined reference to `bpf_xdp_sock_convert_ctx_access'

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: fada7fdc83 ("bpf: Allow bpf_map_lookup_elem() on an xskmap")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-06-15 01:22:00 +02:00
Stanislav Fomichev
1314ef5611 bpf: export bpf_sock for BPF_PROG_TYPE_SOCK_OPS prog type
And let it use bpf_sk_storage_{get,delete} helpers to access socket
storage. Kernel context (struct bpf_sock_ops_kern) already has sk
member, so I just expose it to the BPF hooks. I use
PTR_TO_SOCKET_OR_NULL and return NULL in !is_fullsock case.

I also export bpf_tcp_sock to make it possible to access tcp socket stats.

Cc: Martin Lau <kafai@fb.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-06-15 01:21:57 +02:00
Stanislav Fomichev
fb85c4a730 bpf: export bpf_sock for BPF_PROG_TYPE_CGROUP_SOCK_ADDR prog type
And let it use bpf_sk_storage_{get,delete} helpers to access socket
storage. Kernel context (struct bpf_sock_addr_kern) already has sk
member, so I just expose it to the BPF hooks. Using PTR_TO_SOCKET
instead of PTR_TO_SOCK_COMMON should be safe because the hook is
called on bind/connect.

Cc: Martin Lau <kafai@fb.com>
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-06-15 01:21:56 +02:00
Martin KaFai Lau
99f3a064bc bpf: net: Add SO_DETACH_REUSEPORT_BPF
There is SO_ATTACH_REUSEPORT_[CE]BPF but there is no DETACH.
This patch adds SO_DETACH_REUSEPORT_BPF sockopt.  The same
sockopt can be used to undo both SO_ATTACH_REUSEPORT_[CE]BPF.

reseport_detach_prog() is added and it is mostly a mirror
of the existing reuseport_attach_prog().  The differences are,
it does not call reuseport_alloc() and returns -ENOENT when
there is no old prog.

Cc: Craig Gallek <kraig@google.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Reviewed-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2019-06-15 01:21:19 +02:00
Kevin Hilman
b39978086a ASoC: tohdmitx bindings
The patch on this branch adds bindings for tohdmitx, including a header
 to be used in DT bindings which needs to be shared with the arm-soc tree
 in order to allow system DTs to be merged.
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Merge tag 'asoc-tohdmitx' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into HEAD

ASoC: tohdmitx bindings

The patch on this branch adds bindings for tohdmitx, including a header
to be used in DT bindings which needs to be shared with the arm-soc tree
in order to allow system DTs to be merged.

# gpg: Signature made Fri 14 Jun 2019 11:43:33 AM PDT
# gpg:                using RSA key ADE668AA675718B59FE29FEA24D68B725D5487D0
# gpg:                issuer "broonie@kernel.org"
# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>" [full]
# gpg:                 aka "Mark Brown <broonie@debian.org>" [full]
# gpg:                 aka "Mark Brown <broonie@kernel.org>" [full]
# gpg:                 aka "Mark Brown <broonie@tardis.ed.ac.uk>" [full]
# gpg:                 aka "Mark Brown <broonie@linaro.org>" [unknown]
# gpg:                 aka "Mark Brown <Mark.Brown@linaro.org>" [unknown]

* tag 'asoc-tohdmitx' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound:
  ASoC: meson: add tohdmitx DT bindings
2019-06-14 15:55:25 -07:00
Wolfram Sang
76cc9f0efd i2c: headers: reformat header comment and update copyright
Let's stick to coding style.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-14 23:24:33 +02:00
Wolfram Sang
2caea56f56 i2c: headers: update docs about I2C_CLIENT_*
Update kerneldoc for i2c client flags because they increased over time.
Also, move them to a position where they can be more easily found.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-14 23:24:33 +02:00
Wolfram Sang
d68222d4d6 i2c: headers: always have a named variable in arguments
Much better to read and understand. Naming for i2c_adapter is not
consistent (yet), so use the name which is also used in core code.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-14 23:24:33 +02:00
Wolfram Sang
e1714daad7 i2c: headers: don't use 'dev' as adapter variable
It is not a struct device, so 'dev' is confusing. Use 'adap', the most
common name.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-06-14 23:24:33 +02:00
Mauro Carvalho Chehab
151f4e2bdc docs: power: convert docs to ReST and rename to *.rst
Convert the PM documents to ReST, in order to allow them to
build with Sphinx.

The conversion is actually:
  - add blank lines and indentation in order to identify paragraphs;
  - fix tables markups;
  - add some lists markups;
  - mark literal blocks;
  - adjust title markups.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Srivatsa S. Bhat (VMware) <srivatsa@csail.mit.edu>
2019-06-14 16:08:36 -05:00
Mauro Carvalho Chehab
458f69ef36 docs: timers: convert docs to ReST and rename to *.rst
The conversion here is really trivial: just a bunch of title
markups and very few puntual changes is enough to make it to
be parsed by Sphinx and generate a nice html.

The conversion is actually:
  - add blank lines and identation in order to identify paragraphs;
  - fix tables markups;
  - add some lists markups;
  - mark literal blocks;
  - adjust title markups.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-14 14:31:48 -06:00
Mauro Carvalho Chehab
99c8b231ae docs: cgroup-v1: convert docs to ReST and rename to *.rst
Convert the cgroup-v1 files to ReST format, in order to
allow a later addition to the admin-guide.

The conversion is actually:
  - add blank lines and identation in order to identify paragraphs;
  - fix tables markups;
  - add some lists markups;
  - mark literal blocks;
  - adjust title markups.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
2019-06-14 13:29:54 -07:00
Mauro Carvalho Chehab
3bdab16c55 docs: pcmcia: convert docs to ReST and rename to *.rst
Convert the pcmcia docs to ReST format. Most of the changes here
are trivial.

The conversion is actually:
  - add blank lines and identation in order to identify paragraphs;
  - fix tables markups;
  - add some lists markups;
  - mark literal blocks;
  - adjust title markups.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-14 14:23:35 -06:00
Mauro Carvalho Chehab
10ffebbed5 docs: fault-injection: convert docs to ReST and rename to *.rst
The conversion is actually:
  - add blank lines and identation in order to identify paragraphs;
  - fix tables markups;
  - add some lists markups;
  - mark literal blocks;
  - adjust title markups.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Federico Vaga <federico.vaga@vaga.pv.it>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-06-14 14:21:07 -06:00
Jonathan Corbet
8afecfb0ec Linux 5.2-rc4
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Merge tag 'v5.2-rc4' into mauro

We need to pick up post-rc1 changes to various document files so they don't
get lost in Mauro's massive RST conversion push.
2019-06-14 14:18:53 -06:00
Jerome Brunet
abdcfc2564
ASoC: meson: add tohdmitx DT bindings
Add the bindings and the related documentation for the audio hdmitx
control glue of the Amlogic g12a SoC family

Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Tested-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-06-14 19:42:00 +01:00
David S. Miller
d96ec97511 Many changes all over:
* HE (802.11ax) work continues
  * WPA3 offloads
  * work on extended key ID handling continues
  * fixes to honour AP supported rates with auth/assoc frames
  * nl80211 netlink policy improvements to fix some issues
    with strict validation on new commands with old attrs
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Merge tag 'mac80211-next-for-davem-2019-06-14' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
Many changes all over:
 * HE (802.11ax) work continues
 * WPA3 offloads
 * work on extended key ID handling continues
 * fixes to honour AP supported rates with auth/assoc frames
 * nl80211 netlink policy improvements to fix some issues
   with strict validation on new commands with old attrs
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 11:27:26 -07:00
David S. Miller
2a2af5e6e6 Various fixes, all over:
* a few memory leaks
  * fixes for management frame protection security
    and A2/A3 confusion (affecting TDLS as well)
  * build fix for certificates
  * etc.
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Merge tag 'mac80211-for-davem-2019-06-14' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Various fixes, all over:
 * a few memory leaks
 * fixes for management frame protection security
   and A2/A3 confusion (affecting TDLS as well)
 * build fix for certificates
 * etc.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 09:36:51 -07:00
Russell King - ARM Linux admin
4add700968 net: phylink: further mac_config documentation improvements
While reviewing the DPAA2 work, it has become apparent that we need
better documentation about which members of the phylink link state
structure are valid in the mac_config call.  Improve this
documentation.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-14 09:28:37 -07:00
Ville Syrjälä
7974033e52 drm/dp: Add DP_DPCD_QUIRK_NO_SINK_COUNT
CH7511 eDP->LVDS bridge doesn't seem to set SINK_COUNT properly
causing i915 to detect it as disconnected. Add a quirk to ignore
SINK_COUNT on these devices.

Cc: David S. <david@majinbuu.com>
Cc: Peteris Rudzusiks <peteris.rudzusiks@gmail.com>
Tested-by: Peteris Rudzusiks <peteris.rudzusiks@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105406
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190528140650.19230-1-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com> #irc
2019-06-14 19:11:10 +03:00
Linus Torvalds
fd6b99fa41 Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
 "16 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm/devm_memremap_pages: fix final page put race
  PCI/P2PDMA: track pgmap references per resource, not globally
  lib/genalloc: introduce chunk owners
  PCI/P2PDMA: fix the gen_pool_add_virt() failure path
  mm/devm_memremap_pages: introduce devm_memunmap_pages
  drivers/base/devres: introduce devm_release_action()
  mm/vmscan.c: fix trying to reclaim unevictable LRU page
  coredump: fix race condition between collapse_huge_page() and core dumping
  mm/mlock.c: change count_mm_mlocked_page_nr return type
  mm: mmu_gather: remove __tlb_reset_range() for force flush
  fs/ocfs2: fix race in ocfs2_dentry_attach_lock()
  mm/vmscan.c: fix recent_rotated history
  mm/mlock.c: mlockall error for flag MCL_ONFAULT
  scripts/decode_stacktrace.sh: prefix addr2line with $CROSS_COMPILE
  mm/list_lru.c: fix memory leak in __memcg_init_list_lru_node
  mm: memcontrol: don't batch updates of local VM stats and events
2019-06-14 06:08:46 -10:00
Linus Torvalds
bcb46a0e0e sound fixes for 5.2-rc5
you might feel like a deja vu to receive a bulk of changes at rc5,
 and it happens again; we've got a collection of fixes for ASoC.
 Most of fixes are targeted for the newly merged SOF (Sound Open
 Firmware) stuff and the relevant fixes for Intel platforms.
 
 Other than that, there are a few regression fixes for the recent
 ASoC core changes and HD-audio quirk, as well as a couple of
 FireWire fixes and for other ASoC codecs.
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Merge tag 'sound-5.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "It might feel like deja vu to receive a bulk of changes at rc5, and it
  happens again; we've got a collection of fixes for ASoC. Most of fixes
  are targeted for the newly merged SOF (Sound Open Firmware) stuff and
  the relevant fixes for Intel platforms.

  Other than that, there are a few regression fixes for the recent ASoC
  core changes and HD-audio quirk, as well as a couple of FireWire fixes
  and for other ASoC codecs"

* tag 'sound-5.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (54 commits)
  Revert "ALSA: hda/realtek - Improve the headset mic for Acer Aspire laptops"
  ALSA: ice1712: Check correct return value to snd_i2c_sendbytes (EWS/DMX 6Fire)
  ALSA: oxfw: allow PCM capture for Stanton SCS.1m
  ALSA: firewire-motu: fix destruction of data for isochronous resources
  ASoC: Intel: sst: fix kmalloc call with wrong flags
  ASoC: core: Fix deadlock in snd_soc_instantiate_card()
  SoC: rt274: Fix internal jack assignment in set_jack callback
  ALSA: hdac: fix memory release for SST and SOF drivers
  ASoC: SOF: Intel: hda: use the defined ppcap functions
  ASoC: core: move DAI pre-links initiation to snd_soc_instantiate_card
  ASoC: Intel: cht_bsw_rt5672: fix kernel oops with platform_name override
  ASoC: Intel: cht_bsw_nau8824: fix kernel oops with platform_name override
  ASoC: Intel: bytcht_es8316: fix kernel oops with platform_name override
  ASoC: Intel: cht_bsw_max98090: fix kernel oops with platform_name override
  ASoC: sun4i-i2s: Add offset to RX channel select
  ASoC: sun4i-i2s: Fix sun8i tx channel offset mask
  ASoC: max98090: remove 24-bit format support if RJ is 0
  ASoC: da7219: Fix build error without CONFIG_I2C
  ASoC: SOF: Intel: hda: Fix COMPILE_TEST build error
  ASoC: SOF: fix DSP oops definitions in FW ABI
  ...
2019-06-14 05:37:06 -10:00
James Prestwood
1c38c7f220 nl80211: send event when CMD_FRAME duration expires
cfg80211_remain_on_channel_expired is used to notify userspace when
the remain on channel duration expired by sending an event. There is
no such equivalent to CMD_FRAME, where if offchannel and a duration
is provided, the card will go offchannel for that duration. Currently
there is no way for userspace to tell when that duration expired
apart from setting an independent timeout. This timeout is quite
erroneous as the kernel may not immediately send out the frame
because of scheduling or work queue delays. In testing, it was found
this timeout had to be quite large to accomidate any potential delays.

A better solution is to have the kernel send an event when this
duration has expired. There is already NL80211_CMD_FRAME_WAIT_CANCEL
which can be used to cancel a NL80211_CMD_FRAME offchannel. Using this
command matches perfectly to how NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL
works, where its both used to cancel and notify if the duration has
expired.

Signed-off-by: James Prestwood <james.prestwood@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-14 16:08:28 +02:00
Steve Longerbeam
f208b26e61 gpu: ipu-v3: ipu-ic: Fully describe colorspace conversions
Only providing the input and output RGB/YUV space to the IC task init
functions is not sufficient. To fully characterize a colorspace
conversion, the Y'CbCr encoding standard, and quantization also
need to be specified.

Define a 'struct ipu_ic_colorspace' that includes all the above.

This allows to actually enforce the fact that the IC:

- can only encode to/from YUV and RGB full range. A follow-up patch will
  remove this restriction.
- can only encode using BT.601 standard. A follow-up patch will add
  Rec.709 encoding support.

The determination of the CSC coefficients based on the input/output
'struct ipu_ic_colorspace' are moved to a new exported function
ipu_ic_calc_csc(), and 'struct ic_csc_params' is exported as
'struct ipu_ic_csc_params'. ipu_ic_calc_csc() fills a 'struct ipu_ic_csc'
with the input/output 'struct ipu_ic_colorspace' and the calculated
'struct ic_csc_params' from those input/output colorspaces.

The functions ipu_ic_task_init(_rsc)() now take a filled 'struct
ipu_ic_csc'.

The existing CSC coefficient tables and ipu_ic_calc_csc() are moved
to a new module ipu-ic-csc.c. This is in preparation for adding more
coefficient tables for limited range quantization and more encoding
standards.

The existing ycbcr2rgb and inverse rgb2ycbcr tables defined the BT.601
Y'CbCr encoding coefficients. The rgb2ycbcr table specifically described
the BT.601 encoding from full range RGB to full range YUV. Table
comments have been added in ipu-ic-csc.c to make this more clear.

The ycbcr2rgb inverse table described encoding YUV limited range to RGB
full range. To be consistent with the rgb2ycbcr table, this table is
converted to YUV full range to RGB full range, and the comments are
expanded in ipu-ic-csc.c.

The ic_csc_rgb2rgb table was just an identity matrix, so it is renamed
'identity' in ipu-ic-csc.c.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
[p.zabel@pengutronix.de: removed a superfluous blank line]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2019-06-14 15:31:45 +02:00
Janne Karhunen
42df744c41 LSM: switch to blocking policy update notifiers
Atomic policy updaters are not very useful as they cannot
usually perform the policy updates on their own. Since it
seems that there is no strict need for the atomicity,
switch to the blocking variant. While doing so, rename
the functions accordingly.

Signed-off-by: Janne Karhunen <janne.karhunen@gmail.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Acked-by: James Morris <jamorris@linux.microsoft.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
2019-06-14 09:02:42 -04:00
Johannes Berg
1e87fec9fa mac80211: call rate_control_send_low() internally
There's no rate control algorithm that *doesn't* want to call
it internally, and calling it internally will let us modify
its behaviour in the future.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-14 14:17:37 +02:00
Ilan Peer
cd6f341102 ieee80211: Add a missing extended capability flag definition
Add the "OBSS Narrow Bandwidth RU In OFDMA Tolerance Support" flag
definition to the definitions of the flags covered by the Extended
Capability IE.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-14 14:16:17 +02:00
Ilan Peer
4770c8f902 cfg80211: Add a function to iterate all BSS entries
Add a function that iterates over the BSS entries associated with a
given wiphy and calls a callback for each iterated BSS. This can be
used by drivers in various ways, e.g., to evaluate some property for
all the BSSs in the medium.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-14 14:16:02 +02:00
John Crispin
a0de1ca383 mac80211: allow turning TWT responder support on and off via netlink
Allow the userland daemon to en/disable TWT support for an AP.

Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
[simplify parsing code]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-14 14:14:10 +02:00
John Crispin
c9d3245e03 mac80211: dynamically enable the TWT requester support on STA interfaces
Turn TWT for STA interfaces when they associate and/or receive a
beacon where the twt_responder bit has changed.

Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-14 14:12:13 +02:00
Johannes Berg
901bb98918 nl80211: require and validate vendor command policy
Require that each vendor command give a policy of its sub-attributes
in NL80211_ATTR_VENDOR_DATA, and then (stricly) check the contents,
including the NLA_F_NESTED flag that we couldn't check on the outer
layer because there we don't know yet.

It is possible to use VENDOR_CMD_RAW_DATA for raw data, but then no
nested data can be given (NLA_F_NESTED flag must be clear) and the
data is just passed as is to the command.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-14 14:12:01 +02:00
John Crispin
d7edf40c15 mac80211: add ieee80211_get_he_iftype_cap() helper
This function is similar to ieee80211_get_he_sta_cap() but allows passing
the iftype. Also make ieee80211_get_he_sta_cap() use the new helper
rather than duplicating the code.

Signed-off-by: Shashidhar Lakkavalli <slakkavalli@datto.com>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-14 14:10:47 +02:00
Chung-Hsien Hsu
26f7044e95 nl80211: add support for SAE authentication offload
Let drivers advertise support for station-mode SAE authentication
offload with a new NL80211_EXT_FEATURE_SAE_OFFLOAD flag.

Signed-off-by: Chung-Hsien Hsu <stanley.hsu@cypress.com>
Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@cypress.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-14 14:07:49 +02:00
Chung-Hsien Hsu
cc3e14c21a nl80211: add WPA3 definition for SAE authentication
Add definition of WPA version 3 for SAE authentication.

Signed-off-by: Chung-Hsien Hsu <stanley.hsu@cypress.com>
Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@cypress.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-14 14:07:34 +02:00
Alexander Wetzel
90cc4bd611 mac80211: AMPDU handling for Extended Key ID
IEEE 802.11 - 2016 forbids mixing MPDUs with different keyIDs in one
A-MPDU. Drivers supporting A-MPDUs and Extended Key ID must actively
enforce that requirement due to the available two unicast keyIDs.

Allow driver to signal mac80211 that they will not check the keyID in
MPDUs when aggregating them and that they expect mac80211 to stop Tx
aggregation when rekeying a connection using Extended Key ID.

Signed-off-by: Alexander Wetzel <alexander@wetzel-home.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2019-06-14 14:05:35 +02:00
Daniel Vetter
2454fcea33 drm-misc-next for v5.3:
UAPI Changes:
 
 Cross-subsystem Changes:
 - Add code to signal all dma-fences when freed with pending signals.
 - Annotate reservation object access in CONFIG_DEBUG_MUTEXES
 
 Core Changes:
 - Assorted documentation fixes.
 - Use irqsave/restore spinlock to add crc entry.
 - Move code around to drm_client, for internal modeset clients.
 - Make drm_crtc.h and drm_debugfs.h self-contained.
 - Remove drm_fb_helper_connector.
 - Add bootsplash to todo.
 - Fix lock ordering in pan_display_legacy.
 - Support pinning buffers to current location in gem-vram.
 - Remove the now unused locking functions from gem-vram.
 - Remove the now unused kmap-object argument from vram helpers.
 - Stop checking return value of debugfs_create.
 - Add atomic encoder enable/disable helpers.
 - pass drm_atomic_state to atomic connector check.
 - Add atomic support for bridge enable/disable.
 - Add self refresh helpers to core.
 
 Driver Changes:
 - Add extra delay to make MTP SDM845 work.
 - Small fixes to virtio, vkms, sii902x, sii9234, ast, mcde, analogix, rockchip.
 - Add zpos and ?BGR8888 support to meson.
 - More removals of drm_os_linux and drmP headers for amd, radeon, sti, r128, r128, savage, sis.
 - Allow synopsis to unwedge the i2c hdmi bus.
 - Add orientation quirks for GPD panels.
 - Edid cleanups and fixing handling for edid < 1.2.
 - Add runtime pm to stm.
 - Handle s/r in dw-hdmi.
 - Add hooks for power on/off to dsi for stm.
 - Remove virtio dirty tracking code, done in drm core.
 - Rework BO handling in ast and mgag200.
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Merge tag 'drm-misc-next-2019-06-14' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v5.3:

UAPI Changes:

Cross-subsystem Changes:
- Add code to signal all dma-fences when freed with pending signals.
- Annotate reservation object access in CONFIG_DEBUG_MUTEXES

Core Changes:
- Assorted documentation fixes.
- Use irqsave/restore spinlock to add crc entry.
- Move code around to drm_client, for internal modeset clients.
- Make drm_crtc.h and drm_debugfs.h self-contained.
- Remove drm_fb_helper_connector.
- Add bootsplash to todo.
- Fix lock ordering in pan_display_legacy.
- Support pinning buffers to current location in gem-vram.
- Remove the now unused locking functions from gem-vram.
- Remove the now unused kmap-object argument from vram helpers.
- Stop checking return value of debugfs_create.
- Add atomic encoder enable/disable helpers.
- pass drm_atomic_state to atomic connector check.
- Add atomic support for bridge enable/disable.
- Add self refresh helpers to core.

Driver Changes:
- Add extra delay to make MTP SDM845 work.
- Small fixes to virtio, vkms, sii902x, sii9234, ast, mcde, analogix, rockchip.
- Add zpos and ?BGR8888 support to meson.
- More removals of drm_os_linux and drmP headers for amd, radeon, sti, r128, r128, savage, sis.
- Allow synopsis to unwedge the i2c hdmi bus.
- Add orientation quirks for GPD panels.
- Edid cleanups and fixing handling for edid < 1.2.
- Add runtime pm to stm.
- Handle s/r in dw-hdmi.
- Add hooks for power on/off to dsi for stm.
- Remove virtio dirty tracking code, done in drm core.
- Rework BO handling in ast and mgag200.

Tiny conflict in drivers/gpu/drm/amd/display/dc/clk_mgr/clk_mgr.c,
needed #include <linux/slab.h> to make it compile.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/0e01de30-9797-853c-732f-4a5bd6e61445@linux.intel.com
2019-06-14 11:44:24 +02:00