As of earlier commit we have address space separation. Yet we forgot to
remove the respective comment and DRM_AUTH in the ioctl declaration.
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Steven Price <steven.price@arm.com>
Fixes: 7282f7645d ("drm/panfrost: Implement per FD address spaces")
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101130313.8862-4-emil.l.velikov@gmail.com
Use the canonical "[CRTC:%d:%s]" format for the obj id/name
in the debugfs display_info dump. Everyone should already be
familiar with the format since it's used in the debug logs
extensively.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129185434.25549-8-ville.syrjala@linux.intel.com
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
No point in repeating the crtc mode for each cloned encoder.
Just print it once, and avoid using multiple lines for it.
And while at let's polish the fixed mode print to fit on
one line as well.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129185434.25549-6-ville.syrjala@linux.intel.com
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
The bspec tells us 'Program SHPD_FILTER_CNT with the "500 microseconds
adjusted" value before enabling hotplug detection' on CNP+. We haven't
been touching this register at all thus far, but we should probably
follow the bspec's guidance.
The register also exists on LPT and SPT, but there isn't any specific
guidance I can find on how we should be programming it there so let's
leave it be for now.
Bspec: 4342
Bspec: 31297
Bspec: 8407
Bspec: 49305
Bspec: 50473
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127221314.575575-3-matthew.d.roper@intel.com
When looking at SDEISR to determine the connection status of combo
outputs, we should use the phy index rather than the port index.
Although they're usually the same thing, EHL's DDI-D (port D) is
attached to PHY-A and SDEISR doesn't even have bits for a "D" output.
It's also possible that future platforms may map DDIs (the internal
display engine programming units) to PHYs (the output handling on the IO
side) in ways where port!=phy, so let's look at the PHY index by
default.
v2: Rename to intel_combo_phy_connected. (Lucas)
Fixes: 719d240026 ("drm/i915/ehl: Enable DDI-D")
Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127221314.575575-2-matthew.d.roper@intel.com
The South Display is part of the PCH so we should technically be basing
our port detection logic off the PCH in use rather than the platform
generation.
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191127221314.575575-1-matthew.d.roper@intel.com
We have been trying to use rasdaemon to monitor hardware errors like
correctable memory errors. rasdaemon uses trace events to monitor
various hardware errors. In order to test it, we have to inject some
hardware errors, unfortunately not all of them provide error
injections. MCE does provide a way to inject MCE errors, but errors
like PCI error and devlink error don't, it is not easy to add error
injection to each of them. Instead, it is relatively easier to just
allow users to inject trace events in a generic way so that all trace
events can be injected.
This patch introduces trace event injection, where a new 'inject' is
added to each tracepoint directory. Users could write into this file
with key=value pairs to specify the value of each fields of the trace
event, all unspecified fields are set to zero values by default.
For example, for the net/net_dev_queue tracepoint, we can inject:
INJECT=/sys/kernel/debug/tracing/events/net/net_dev_queue/inject
echo "" > $INJECT
echo "name='test'" > $INJECT
echo "name='test' len=1024" > $INJECT
cat /sys/kernel/debug/tracing/trace
...
<...>-614 [000] .... 36.571483: net_dev_queue: dev= skbaddr=00000000fbf338c2 len=0
<...>-614 [001] .... 136.588252: net_dev_queue: dev=test skbaddr=00000000fbf338c2 len=0
<...>-614 [001] .N.. 208.431878: net_dev_queue: dev=test skbaddr=00000000fbf338c2 len=1024
Triggers could be triggered as usual too:
echo "stacktrace if len == 1025" > /sys/kernel/debug/tracing/events/net/net_dev_queue/trigger
echo "len=1025" > $INJECT
cat /sys/kernel/debug/tracing/trace
...
bash-614 [000] .... 36.571483: net_dev_queue: dev= skbaddr=00000000fbf338c2 len=0
bash-614 [001] .... 136.588252: net_dev_queue: dev=test skbaddr=00000000fbf338c2 len=0
bash-614 [001] .N.. 208.431878: net_dev_queue: dev=test skbaddr=00000000fbf338c2 len=1024
bash-614 [001] .N.1 284.236349: <stack trace>
=> event_inject_write
=> vfs_write
=> ksys_write
=> do_syscall_64
=> entry_SYSCALL_64_after_hwframe
The only thing that can't be injected is string pointers as they
require constant string pointers, this can't be done at run time.
Link: http://lkml.kernel.org/r/20191130045218.18979-1-xiyou.wangcong@gmail.com
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
To get the changes in:
0acefef584 ("Merge tag 'threads-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux")
49cb2fc42c ("fork: extend clone3() to support setting a PID")
fa729c4df5 ("clone3: validate stack arguments")
b612e5df45 ("clone3: add CLONE_CLEAR_SIGHAND")
This file gets rebuilt, but no changes ensues:
CC /tmp/build/perf/trace/beauty/clone.o
This addresses this perf build warning:
Warning: Kernel ABI header at 'tools/include/uapi/linux/sched.h' differs from latest version at 'include/uapi/linux/sched.h'
diff -u tools/include/uapi/linux/sched.h include/uapi/linux/sched.
The CLONE_CLEAR_SIGHAND one will be used in tools/perf/trace/beauty/clone.c
in a followup patch to show that string when this bit is set in the
syscall arg. Keeping a copy of this file allows us to build this in
older systems and have the binary support printing that flag whenever
that system gets its kernel updated to one where this feature is
present.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Adrian Reber <areber@redhat.com>
Cc: Christian Brauner <christian.brauner@ubuntu.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-nprqsvvzbhzoy64cbvos6c5b@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
To pick up the changes from:
14edff8831 Merge tag 'kvmarm-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
a4b28f5c67 Merge remote-tracking branch 'kvmarm/kvm-arm64/stolen-time' into kvmarm-master/next
58772e9a3d ("KVM: arm64: Provide VCPU attributes for stolen time")
da345174ce ("KVM: arm/arm64: Allow user injection of external data aborts")
c726200dd1 ("KVM: arm/arm64: Allow reporting non-ISV data aborts to userspace")
efe5ddcae4 ("KVM: PPC: Book3S HV: XIVE: Allow userspace to set the # of VPs")
No tools changes are caused by this, as the only defines so far used
from these files are for syscall arg pretty printing are:
$ grep KVM tools/perf/trace/beauty/*.sh
tools/perf/trace/beauty/kvm_ioctl.sh:regex='^#[[:space:]]*define[[:space:]]+KVM_(\w+)[[:space:]]+_IO[RW]*\([[:space:]]*KVMIO[[:space:]]*,[[:space:]]*(0x[[:xdigit:]]+).*'
$
Some are also include by:
tools/perf/arch/x86/util/kvm-stat.c
tools/perf/arch/powerpc/util/kvm-stat.c
This addresses these tools/perf build warnings:
Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h
Warning: Kernel ABI header at 'tools/arch/powerpc/include/uapi/asm/kvm.h' differs from latest version at 'arch/powerpc/include/uapi/asm/kvm.h'
diff -u tools/arch/powerpc/include/uapi/asm/kvm.h arch/powerpc/include/uapi/asm/kvm.h
Warning: Kernel ABI header at 'tools/arch/arm/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm/include/uapi/asm/kvm.h'
diff -u tools/arch/arm/include/uapi/asm/kvm.h arch/arm/include/uapi/asm/kvm.h
Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm64/include/uapi/asm/kvm.h'
diff -u tools/arch/arm64/include/uapi/asm/kvm.h arch/arm64/include/uapi/asm/kvm.h
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Christoffer Dall <christoffer.dall@arm.com>
Cc: Fabiano Rosas <farosas@linux.ibm.com>
Cc: Greg Kurz <groug@kaod.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Steven Price <steven.price@arm.com>
Link: https://lkml.kernel.org/n/tip-qrjdudhq25mk5bfnhveofbm4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
To pick the changes from:
3ad2522c64 ("statx: define STATX_ATTR_VERITY")
That don't trigger any changes in tooling.
This silences this perf build warning:
Warning: Kernel ABI header at 'tools/include/uapi/linux/stat.h' differs from latest version at 'include/uapi/linux/stat.h'
diff -u tools/include/uapi/linux/stat.h include/uapi/linux/stat.h
At some point we wi'll beautify structs passed in pointers to syscalls
and then we'll need to have tables for these defines, for now update the
file to silence the warning as this file is used for doing this type of
number -> string translations for other defines found in these file.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-thcy60dpry5qrpn7nmc58bwg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
To pick the changes from:
b103fb7653 ("fscrypt: add support for IV_INO_LBLK_64 policies")
That don't trigger any changes in tooling.
This silences this perf build warning:
Warning: Kernel ABI header at 'tools/include/uapi/linux/fscrypt.h' differs from latest version at 'include/uapi/linux/fscrypt.h'
diff -u tools/include/uapi/linux/fscrypt.h include/uapi/linux/fscrypt.h
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Eric Biggers <ebiggers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-cgfz3ffe07pw2m8hmstvkudl@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
mwifiex_process_tdls_action_frame() without checking
the incoming tdls infomation element's vality before use it,
this may cause multi heap buffer overflows.
Fix them by putting vality check before use it.
IE is TLV struct, but ht_cap and ht_oper aren’t TLV struct.
the origin marvell driver code is wrong:
memcpy(&sta_ptr->tdls_cap.ht_oper, pos,....
memcpy((u8 *)&sta_ptr->tdls_cap.ht_capb, pos,...
Fix the bug by changing pos(the address of IE) to
pos+2 ( the address of IE value ).
Signed-off-by: qize wang <wangqize888888888@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Current implementation always use default eeprom mac address to
configure device registers even if it is updated using
mt76_eeprom_override. Fix it initializing macaddr filed of mt76_dev data
structure with eeprom mac address and running mt76_eeprom_override
before mt76x02_mac_setaddr
Fixes: d1bc9bf207 ("mt76: mt76x0: eeprom: add support for MAC address from OF")
Tested-by: Kevin Schmidt <kevin.patrick.schmidt@googlemail.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
And update linux/linkage.h, which requires in turn that we make these
files switch from ENTRY()/ENDPROC() to SYM_FUNC_START()/SYM_FUNC_END():
tools/perf/arch/arm64/tests/regs_load.S
tools/perf/arch/arm/tests/regs_load.S
tools/perf/arch/powerpc/tests/regs_load.S
tools/perf/arch/x86/tests/regs_load.S
We also need to switch SYM_FUNC_START_LOCAL() to SYM_FUNC_START() for
the functions used directly by 'perf bench', and update
tools/perf/check_headers.sh to ignore those changes when checking if the
kernel original files drifted from the copies we carry.
This is to get the changes from:
6dcc5627f6 ("x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_*")
ef1e03152c ("x86/asm: Make some functions local")
e9b9d020c4 ("x86/asm: Annotate aliases")
And address these tools/perf build warnings:
Warning: Kernel ABI header at 'tools/arch/x86/lib/memcpy_64.S' differs from latest version at 'arch/x86/lib/memcpy_64.S'
diff -u tools/arch/x86/lib/memcpy_64.S arch/x86/lib/memcpy_64.S
Warning: Kernel ABI header at 'tools/arch/x86/lib/memset_64.S' differs from latest version at 'arch/x86/lib/memset_64.S'
diff -u tools/arch/x86/lib/memset_64.S arch/x86/lib/memset_64.S
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-tay3l8x8k11p7y3qcpqh9qh5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
LPT/WPT only have PCH transcoder A. Make sure we poke at its
chicken register instead of some non-existent register when
FDI is being driven by pipe B or C.
Cc: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191128182358.14477-1-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
This is caused by dereferencing 'dev_data' after put_device() in
the telem_device_remove() function.
This patch just moves the put_device() down a bit to avoid this
issue.
Fixes: 1210d1e6ba ("platform/chrome: wilco_ec: Add telemetry char device interface")
Signed-off-by: Wen Yang <wenyang@linux.alibaba.com>
Cc: Benson Leung <bleung@chromium.org>
Cc: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Cc: Nick Crews <ncrews@chromium.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Some sdio chips of rome QCA6174's regulatory domain code of EEPROM is
empty, then ath_is_world_regd will return false for this case, and
it will lead function __ath_reg_dyn_country not work, thus the regdomain
will not update for NL80211_REGDOM_SET_BY_COUNTRY_IE type, it result
ath10k set the same regdomain/reg_5ghz_ctl/reg_2ghz_ctl to firmware,
then the tx power will not changed with different regdomain's AP. The
regulatory domain code of EEPROM of some QCA6174 PCIE chip is 0x6c, it
means world wide regdomain, for this chip, it does not have the issue.
For empty reulatory domain code chip, set it to world regulatory domain
in functio ath_regd_sanitize, then it will fix the issue.
Tested with QCA6174 SDIO with firmware
WLAN.RMH.4.4.1-00029.
Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
For max bundle size 32, the bundle mask is not same with 8/16.
Change it to match the max bundle size of htc. Otherwise it
will not match with firmware, for example, when bundle count
is 17, then flags of ath10k_htc_hdr is 0x4, if without this
patch, it will be considered as non-bundled packet because it
does not have mask 0xF0, then trigger error message later:
payload length 56747 exceeds max htc length: 4088.
htc->max_msgs_per_htc_bundle is the min value of
HTC_HOST_MAX_MSG_PER_RX_BUNDLE and
msg->ready_ext.max_msgs_per_htc_bundle of ath10k_htc_wait_target,
it will be sent to firmware later in ath10k_htc_start, then
firmware will use it as the final max rx bundle count, in
WLAN.RMH.4.4.1-00029, msg->ready_ext.max_msgs_per_htc_bundle
is 32, it is same with HTC_HOST_MAX_MSG_PER_RX_BUNDLE, so the
final max rx bundle count will be set to 32 in firmware.
This patch only effect sdio chips.
Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00029.
Signed-off-by: Wen Gong <wgong@codeaurora.org>
Fixes: 224776520e ("ath10k: change max RX bundle size from 8 to 32 for sdio")
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
For tcp RX, the quantity of tcp acks to remote is 1/2 of the quantity
of tcp data from remote, then it will have many small length packets
on TX path of sdio bus, then it reduce the RX packets's bandwidth of
tcp.
This patch enable napi on RX path, then the RX packet of tcp will not
feed to tcp stack immeditely from mac80211 since GRO is enabled by
default, it will feed to tcp stack after napi complete, if rx bundle
is enabled, then it will feed to tcp stack one time for each bundle
of RX. For example, RX bundle size is 32, then tcp stack will receive
one large length packet, its length is neary 1500*32, then tcp stack
will send a tcp ack for this large packet, this will reduce the tcp
acks ratio from 1/2 to 1/32. This results in significant performance
improvement for tcp RX.
Tcp rx throughout is 240Mbps without this patch, and it arrive 390Mbps
with this patch. The cpu usage has no obvious difference with and
without NAPI.
call stack for each RX packet on GRO path:
(skb length is about 1500 bytes)
skb_gro_receive ([kernel.kallsyms])
tcp4_gro_receive ([kernel.kallsyms])
inet_gro_receive ([kernel.kallsyms])
dev_gro_receive ([kernel.kallsyms])
napi_gro_receive ([kernel.kallsyms])
ieee80211_deliver_skb ([mac80211])
ieee80211_rx_handlers ([mac80211])
ieee80211_prepare_and_rx_handle ([mac80211])
ieee80211_rx_napi ([mac80211])
ath10k_htt_rx_proc_rx_ind_hl ([ath10k_core])
ath10k_htt_rx_pktlog_completion_handler ([ath10k_core])
ath10k_sdio_napi_poll ([ath10k_sdio])
net_rx_action ([kernel.kallsyms])
softirqentry_text_start ([kernel.kallsyms])
do_softirq ([kernel.kallsyms])
call stack for napi complete and send tcp ack from tcp stack:
(skb length is about 1500*32 bytes)
_tcp_ack_snd_check ([kernel.kallsyms])
tcp_v4_do_rcv ([kernel.kallsyms])
tcp_v4_rcv ([kernel.kallsyms])
local_deliver_finish ([kernel.kallsyms])
ip_local_deliver ([kernel.kallsyms])
ip_rcv_finish ([kernel.kallsyms])
ip_rcv ([kernel.kallsyms])
netif_receive_skb_core ([kernel.kallsyms])
netif_receive_skb_one_core([kernel.kallsyms])
netif_receive_skb ([kernel.kallsyms])
netif_receive_skb_internal ([kernel.kallsyms])
napi_gro_complete ([kernel.kallsyms])
napi_gro_flush ([kernel.kallsyms])
napi_complete_done ([kernel.kallsyms])
ath10k_sdio_napi_poll ([ath10k_sdio])
net_rx_action ([kernel.kallsyms])
__softirqentry_text_start ([kernel.kallsyms])
do_softirq ([kernel.kallsyms])
Tested with QCA6174 SDIO with firmware
WLAN.RMH.4.4.1-00017-QCARMSWP-1.
Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
On powerpc with recent versions of binutils, readelf outputs an extra
field when dumping the symbols of an object file. For example:
35: 0000000000000838 96 FUNC LOCAL DEFAULT [<localentry>: 8] 1 btf_is_struct
The extra "[<localentry>: 8]" prevents the GLOBAL_SYM_COUNT variable to
be computed correctly and causes the check_abi target to fail.
Fix that by looking for the symbol name in the last field instead of the
8th one. This way it should also cope with future extra fields.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/bpf/20191201195728.4161537-1-aurelien@aurel32.net
Though the context is closed and so no more requests can be added to the
timeline, retirement can still be removing requests. It can even be
removing the very request we are inspecting and so cause us to wander
into dead links.
Serialise with the retirement by taking the timeline->mutex used for
guarding the timeline->requests list.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112404
Fixes: 4a31741521 ("drm/i915/gem: Refine occupancy test in kill_context()")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191129151845.1092933-1-chris@chris-wilson.co.uk
(cherry picked from commit 7ce596a803)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Check for the NETDEV_UNREGISTER event from the nft_offload_netdev_event
function, which is the event that actually triggers the clean up.
Fixes: 06d392cbe3 ("netfilter: nf_tables_offload: remove rules when the device unregisters")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
bridge->next is only points to the new bridge if drm_bridge_attach()
succeeds. No need to reset it manually here.
Note that this change is part of the attempt to make the bridge chain
a double-linked list. In order to do that we must patch all drivers
manipulating the bridge->next field.
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191023154512.9762-3-boris.brezillon@collabora.com
Note that the EC GPE processing need not be synchronized in
acpi_s2idle_wake() after invoking acpi_ec_dispatch_gpe(), because
that function checks the GPE status and dispatches its handler if
need be and the SCI action handler is not going to run anyway at
that point.
Moreover, it is better to drain all of the pending ACPI events
before restoring the working-state configuration of GPEs in
acpi_s2idle_restore(), because those events are likely to be related
to system wakeup, in which case they will not be relevant going
forward.
Rework the code to take these observations into account.
Tested-by: Kenneth R. Crudup <kenny@panix.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
There is a race condition in the ACPI EC driver, between
__acpi_ec_flush_event() and acpi_ec_event_handler(), that may
cause systems to stay in suspended-to-idle forever after a wakeup
event coming from the EC.
Namely, acpi_s2idle_wake() calls acpi_ec_flush_work() to wait until
the delayed work resulting from the handling of the EC GPE in
acpi_ec_dispatch_gpe() is processed, and that function invokes
__acpi_ec_flush_event() which uses wait_event() to wait for
ec->nr_pending_queries to become zero on ec->wait, and that wait
queue may be woken up too early.
Suppose that acpi_ec_dispatch_gpe() has caused acpi_ec_gpe_handler()
to run, so advance_transaction() has been called and it has invoked
acpi_ec_submit_query() to queue up an event work item, so
ec->nr_pending_queries has been incremented (under ec->lock). The
work function of that work item, acpi_ec_event_handler() runs later
and calls acpi_ec_query() to process the event. That function calls
acpi_ec_transaction() which invokes acpi_ec_transaction_unlocked()
and the latter wakes up ec->wait under ec->lock, but it drops that
lock before returning.
When acpi_ec_query() returns, acpi_ec_event_handler() acquires
ec->lock and decrements ec->nr_pending_queries, but at that point
__acpi_ec_flush_event() (woken up previously) may already have
acquired ec->lock, checked the value of ec->nr_pending_queries (and
it would not have been zero then) and decided to go back to sleep.
Next, if ec->nr_pending_queries is equal to zero now, the loop
in acpi_ec_event_handler() terminates, ec->lock is released and
acpi_ec_check_event() is called, but it does nothing unless
ec_event_clearing is equal to ACPI_EC_EVT_TIMING_EVENT (which is
not the case by default). In the end, if no more event work items
have been queued up while executing acpi_ec_transaction_unlocked(),
there is nothing to wake up __acpi_ec_flush_event() again and it
sleeps forever, so the suspend-to-idle loop cannot make progress and
the system is permanently suspended.
To avoid this issue, notice that it actually is not necessary to
wait for ec->nr_pending_queries to become zero in every case in
which __acpi_ec_flush_event() is used.
First, during platform-based system suspend (not suspend-to-idle),
__acpi_ec_flush_event() is called by acpi_ec_disable_event() after
clearing the EC_FLAGS_QUERY_ENABLED flag, which prevents
acpi_ec_submit_query() from submitting any new event work items,
so calling flush_scheduled_work() and flushing ec_query_wq
subsequently (in order to wait until all of the queries in that
queue have been processed) would be sufficient to flush all of
the pending EC work in that case.
Second, the purpose of the flushing of pending EC work while
suspended-to-idle described above really is to wait until the
first event work item coming from acpi_ec_dispatch_gpe() is
complete, because it should produce system wakeup events if
that is a valid EC-based system wakeup, so calling
flush_scheduled_work() followed by flushing ec_query_wq is also
sufficient for that purpose.
Rework the code to follow the above observations.
Fixes: 56b9918490 ("PM: sleep: Simplify suspend-to-idle control flow")
Reported-by: Kenneth R. Crudup <kenny@panix.com>
Tested-by: Kenneth R. Crudup <kenny@panix.com>
Cc: 5.4+ <stable@vger.kernel.org> # 5.4+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
With sufficient many pages to map gntdev can reach order 9 allocation
sizes. As there is no need to have physically contiguous buffers switch
to kvcalloc() in order to avoid failing allocations.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Today there is a global limit of pages mapped via /dev/xen/gntdev set
to 1 million pages per default. There is no reason why that limit is
existing, as total number of grant mappings is limited by the
hypervisor anyway and preferring kernel mappings over userspace ones
doesn't make sense. It should be noted that the gntdev device is
usable by root only.
Additionally checking of that limit is fragile, as the number of pages
to map via one call is specified in a 32-bit unsigned variable which
isn't tested to stay within reasonable limits (the only test is the
value to be <= zero, which basically excludes only calls without any
mapping requested). So trying to map e.g. 0xffff0000 pages while
already nearly 1000000 pages are mapped will effectively lower the
global number of mapped pages such that a parallel call mapping a
reasonable amount of pages can succeed in spite of the global limit
being violated.
So drop the global limit and introduce per call limit instead. This
per call limit (default: 65536 grant mappings) protects against
allocating insane large arrays in the kernel for doing a hypercall
which will fail anyway in case a user is e.g. trying to map billions
of pages.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
The non-zero check on ret is always going to be false because
ret was initialized as zero and the only place it is set to
non-zero contains a return path before the non-zero check. Hence
the check is redundant and can be removed.
[ jgross@suse.com: limit scope of ret ]
Addresses-Coverity: ("Logically dead code")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
__xen_evtchn_do_upcall() contains guards against being called
recursively. This mechanism was introduced in the early pvops times
(kernel 2.6.26) when there were all the Xen backend drivers missing
from the upstream kernel, and some of those out-of-tree drivers were
enabling interrupts in their event handlers (which was explicitly
allowed in the initial XenoLinux).
Nowadays we don't need to support those old drivers any more and the
capability to allow recursive calls of __xen_evtchn_do_upcall() can
be removed.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Merge updates from Andrew Morton:
"Incoming:
- a small number of updates to scripts/, ocfs2 and fs/buffer.c
- most of MM
I still have quite a lot of material (mostly not MM) staged after
linux-next due to -next dependencies. I'll send those across next week
as the preprequisites get merged up"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (135 commits)
mm/page_io.c: annotate refault stalls from swap_readpage
mm/Kconfig: fix trivial help text punctuation
mm/Kconfig: fix indentation
mm/memory_hotplug.c: remove __online_page_set_limits()
mm: fix typos in comments when calling __SetPageUptodate()
mm: fix struct member name in function comments
mm/shmem.c: cast the type of unmap_start to u64
mm: shmem: use proper gfp flags for shmem_writepage()
mm/shmem.c: make array 'values' static const, makes object smaller
userfaultfd: require CAP_SYS_PTRACE for UFFD_FEATURE_EVENT_FORK
fs/userfaultfd.c: wp: clear VM_UFFD_MISSING or VM_UFFD_WP during userfaultfd_register()
userfaultfd: wrap the common dst_vma check into an inlined function
userfaultfd: remove unnecessary WARN_ON() in __mcopy_atomic_hugetlb()
userfaultfd: use vma_pagesize for all huge page size calculation
mm/madvise.c: use PAGE_ALIGN[ED] for range checking
mm/madvise.c: replace with page_size() in madvise_inject_error()
mm/mmap.c: make vma_merge() comment more easy to understand
mm/hwpoison-inject: use DEFINE_DEBUGFS_ATTRIBUTE to define debugfs fops
autonuma: reduce cache footprint when scanning page tables
autonuma: fix watermark checking in migrate_balanced_pgdat()
...
Pull networking fixes from David Miller:
1) Fix several scatter gather list issues in kTLS code, from Jakub
Kicinski.
2) macb driver device remove has to kill the hresp_err_tasklet. From
Chuhong Yuan.
3) Several memory leak and reference count bug fixes in tipc, from Tung
Nguyen.
4) Fix mlx5 build error w/o ipv6, from Yue Haibing.
5) Fix jumbo frame and other regressions in r8169, from Heiner
Kallweit.
6) Undo some BUG_ON()'s and replace them with WARN_ON_ONCE and proper
error propagation/handling. From Paolo Abeni.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (24 commits)
openvswitch: remove another BUG_ON()
openvswitch: drop unneeded BUG_ON() in ovs_flow_cmd_build_info()
net: phy: realtek: fix using paged operations with RTL8105e / RTL8208
r8169: fix resume on cable plug-in
r8169: fix jumbo configuration for RTL8168evl
net: emulex: benet: indent a Kconfig depends continuation line
selftests: forwarding: fix race between packet receive and tc check
net: sched: fix `tc -s class show` no bstats on class with nolock subqueues
net: ethernet: ti: ale: ensure vlan/mdb deleted when no members
net/mlx5e: Fix build error without IPV6
selftests: pmtu: use -oneline for ip route list cache
tipc: fix duplicate SYN messages under link congestion
tipc: fix wrong timeout input for tipc_wait_for_cond()
tipc: fix wrong socket reference counter after tipc_sk_timeout() returns
tipc: fix potential memory leak in __tipc_sendmsg()
net: macb: add missed tasklet_kill
selftests: bpf: correct perror strings
selftests: bpf: test_sockmap: handle file creation failures gracefully
net/tls: use sg_next() to walk sg entries
net/tls: remove the dead inplace_crypto code
...
Correct valid command length check for MI_ATOMIC, need to check inline
data available field instead of operand data length for whole command.
Fixes: 00a33be406 ("drm/i915/gvt: Add valid length check for MI variable commands")
Reported-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Gao Fred <fred.gao@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Pull x86 fixes from Ingo Molnar:
"Various fixes:
- Fix the PAT performance regression that downgraded write-combining
device memory regions to uncached.
- There's been a number of bugs in 32-bit double fault handling -
hopefully all fixed now.
- Fix an LDT crash
- Fix an FPU over-optimization that broke with GCC9 code
optimizations.
- Misc cleanups"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm/pat: Fix off-by-one bugs in interval tree search
x86/ioperm: Save an indentation level in tss_update_io_bitmap()
x86/fpu: Don't cache access to fpu_fpregs_owner_ctx
x86/entry/32: Remove unused 'restore_all_notrace' local label
x86/ptrace: Document FSBASE and GSBASE ABI oddities
x86/ptrace: Remove set_segment_reg() implementations for current
x86/traps: die() instead of panicking on a double fault
x86/doublefault/32: Rewrite the x86_32 #DF handler and unify with 64-bit
x86/doublefault/32: Move #DF stack and TSS to cpu_entry_area
x86/doublefault/32: Rename doublefault.c to doublefault_32.c
x86/traps: Disentangle the 32-bit and 64-bit doublefault code
lkdtm: Add a DOUBLE_FAULT crash type on x86
selftests/x86/single_step_syscall: Check SYSENTER directly
x86/mm/32: Sync only to VMALLOC_END in vmalloc_sync_all()
Pull perf fixes from Ingo Molnar:
- Make /sys/devices/cpu/rdpmc based RDPMC enforcement more
instantaneous
- decoder: Update the Intel opcode map
- Various tooling fixes, including a few late optimizations and
cleanups.
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
perf script: Fix invalid LBR/binary mismatch error
perf script: Fix brstackinsn for AUXTRACE
perf affinity: Add infrastructure to save/restore affinity
perf pmu: Use file system cache to optimize sysfs access
perf regs: Make perf_reg_name() return "unknown" instead of NULL
perf diff: Use llabs() with 64-bit values
perf diff: Use llabs() with 64-bit values
perf/x86: Implement immediate enforcement of /sys/devices/cpu/rdpmc value of 0
perf tools: Allow to link with libbpf dynamicaly
perf tests: Rename tests/map_groups.c to tests/maps.c
perf tests: Rename thread-mg-share to thread-maps-share
perf maps: Rename map_groups.h to maps.h
perf maps: Rename 'mg' variables to 'maps'
perf map_symbol: Rename ms->mg to ms->maps
perf addr_location: Rename al->mg to al->maps
perf thread: Rename thread->mg to thread->maps
perf maps: Merge 'struct maps' with 'struct map_groups'
x86/insn: perf tools: Add some more instructions to the new instructions test
x86/insn: Add some more Intel instructions to the opcode map
perf map: Remove unused functions
...
Pull input updates from Dmitry Torokhov:
- updates to Ilitech driver to support ILI2117
- face lift of st1232 driver to support MT-B protocol
- a new driver for i.MX system controller keys
- mpr121 driver now supports polling mode
- various input drivers have been switched away from input_polled_dev
to use polled mode of regular input devices
- other assorted cleanups and fixes
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (70 commits)
Input: synaptics-rmi4 - fix various V4L2 compliance problems in F54
Input: synaptics - switch another X1 Carbon 6 to RMI/SMbus
Input: fix Kconfig indentation
Input: imx_sc_key - correct SCU message structure to avoid stack corruption
Input: ili210x - optionally show calibrate sysfs attribute
Input: ili210x - add resolution to chip operations structure
Input: ili210x - do not retrieve/print chip firmware version
Input: mms114 - use device_get_match_data
Input: ili210x - remove unneeded suspend and resume handlers
Input: ili210x - do not unconditionally mark touchscreen as wakeup source
Input: ili210x - define and use chip operations structure
Input: ili210x - do not set parent device explicitly
Input: ili210x - handle errors from input_mt_init_slots()
Input: ili210x - switch to using threaded IRQ
Input: ili210x - add ILI2117 support
dt-bindings: input: touchscreen: ad7879: generic node names in example
Input: ar1021 - fix typo in preprocessor macro name
Input: synaptics-rmi4 - simplify data read in rmi_f54_work
Input: kxtj9 - switch to using polled mode of input devices
Input: kxtj9 - switch to using managed resources
...
- Updates to better support vmalloc space restrictions on PowerPC platforms.
- Cleanups to move common sysfs attributes to core 'struct device_type'
objects.
- Export the 'target_node' attribute (the effective numa node if pmem is
marked online) for regions and namespaces.
- Miscellaneous fixups and optimizations.
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Merge tag 'libnvdimm-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"The highlight this cycle is continuing integration fixes for PowerPC
and some resulting optimizations.
Summary:
- Updates to better support vmalloc space restrictions on PowerPC
platforms.
- Cleanups to move common sysfs attributes to core 'struct
device_type' objects.
- Export the 'target_node' attribute (the effective numa node if pmem
is marked online) for regions and namespaces.
- Miscellaneous fixups and optimizations"
* tag 'libnvdimm-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (21 commits)
MAINTAINERS: Remove Keith from NVDIMM maintainers
libnvdimm: Export the target_node attribute for regions and namespaces
dax: Add numa_node to the default device-dax attributes
libnvdimm: Simplify root read-only definition for the 'resource' attribute
dax: Simplify root read-only definition for the 'resource' attribute
dax: Create a dax device_type
libnvdimm: Move nvdimm_bus_attribute_group to device_type
libnvdimm: Move nvdimm_attribute_group to device_type
libnvdimm: Move nd_mapping_attribute_group to device_type
libnvdimm: Move nd_region_attribute_group to device_type
libnvdimm: Move nd_numa_attribute_group to device_type
libnvdimm: Move nd_device_attribute_group to device_type
libnvdimm: Move region attribute group definition
libnvdimm: Move attribute groups to device type
libnvdimm: Remove prototypes for nonexistent functions
libnvdimm/btt: fix variable 'rc' set but not used
libnvdimm/pmem: Delete include of nd-core.h
libnvdimm/namespace: Differentiate between probe mapping and runtime mapping
libnvdimm/pfn_dev: Don't clear device memmap area during generic namespace probe
libnvdimm: Trivial comment fix
...
- omap : misc - catch error returned from pm_runtime_put_sync
- hisi : misc - drop .owner from platform_driver
- stm : change how wakeup is handled
- imx : fix - bailout on error and nuke correct irq
- imx : add support for imx7ulp platform
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Merge tag 'mailbox-v5.5' of git://git.linaro.org/landing-teams/working/fujitsu/integration
Pull mailbox updates from Jassi Brar:
- omap : misc - catch error returned from pm_runtime_put_sync
- hisi : misc - drop .owner from platform_driver
- stm : change how wakeup is handled
- imx : fix - bailout on error and nuke correct irq
- imx : add support for imx7ulp platform
* tag 'mailbox-v5.5' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
mailbox: imx: add support for imx v1 mu
dt-bindings: mailbox: imx-mu: add imx7ulp MU support
mailbox: imx: Clear the right interrupts at shutdown
mailbox: imx: Fix Tx doorbell shutdown path
mailbox: stm32-ipcc: Update wakeup management
mailbox: no need to set .owner platform_driver_register
mailbox/omap: Handle if CONFIG_PM is disabled
This contains a number of cleanups to the core and several drivers, in
particular removing the requirement for drivers to implement pm_runtime.
It also udpates the location of the git tree in MAINTAINERS.
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Merge tag 'hwlock-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc
Pull hwspinlock updates from Bjorn Andersson:
"This contains a number of cleanups to the core and several drivers, in
particular removing the requirement for drivers to implement
pm_runtime.
It also udpates the location of the git tree in MAINTAINERS"
* tag 'hwlock-v5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/andersson/remoteproc:
hwspinlock: u8500_hsem: Remove redundant PM runtime implementation
hwspinlock: sprd: Remove redundant PM runtime implementation
hwspinlock: Let the PM runtime can be optional
hwspinlock: Remove BUG_ON() from the hwspinlock core
hwspinlock: sprd: Use devm_hwspin_lock_register() to register hwlock controller
hwspinlock: sprd: Use devm_add_action_or_reset() for calls to clk_disable_unprepare()
hwspinlock: sprd: Check the return value of clk_prepare_enable()
hwspinlock: sprd: Change to use devm_platform_ioremap_resource()
hwspinlock: u8500_hsem: Use devm_hwspin_lock_register() to register hwlock controller
hwspinlock: u8500_hsem: Use devm_kzalloc() to allocate memory
hwspinlock: u8500_hsem: Change to use devm_platform_ioremap_resource()
MAINTAINERS: hwspinlock: update git tree location
