Commit 06300b21f4 ("kbuild: support building individual files for
external modules") introduced the '/' target. It works only for
external modules to build all .o files, but skip the modpost stage.
However, 'make /' looks a bit weird to me. 'make ./' is more sensible
if you want to build all objects under the current directory, and it
works as expected.
Let's change '/' into a phony target that is an alias of './', but
I may feel like deprecating it in the future.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
In Kbuild, if_changed and friends must have FORCE as a prerequisite.
Hence, $(filter-out FORCE,$^) or $(filter-out $(PHONY),$^) is a common
idiom to get the names of all the prerequisites except phony targets.
Add real-prereqs as a shorthand.
Note:
We cannot replace $(filter %.o,$^) in cmd_link_multi-m because $^ may
include auto-generated dependencies from the .*.cmd file when a single
object module is changed into a multi object module. Refer to commit
69ea912fda ("kbuild: remove unneeded link_multi_deps"). I added some
comment to avoid accidental breakage.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Rob Herring <robh@kernel.org>
The top Makefile does not need to export KBUILD_VMLINUX_INIT and
KBUILD_VMLINUX_MAIN separately.
Put every built-in.a into KBUILD_VMLINUX_OBJS. The order of
$(head-y), $(init-y), $(core-y), ... is still retained.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The symbol table in the final archive is unneeded; the linker does not
require the symbol table after the --whole-archive option. Every object
file in the archive is included in the link anyway.
Pass thin archives from subdirectories directly to the linker, and
remove the final archiving step.
Fix up the document and comments as well.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Each GPU core only uses one interrupt so we don't to look up
an interrupt by name and thereby we don't need interrupt-names.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Fix some oversights in the XArray porcelain API:
- support for m68k's two-byte aligned pointers
- reserving entries using xa_insert()
- missing xa_insert_bh() and xa_insert_irq() functions
- simplify using xa_for_each()
- use lockdep correctly
- a few other minor fixes and improvements
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Merge tag 'xarray-5.0-rc3' of git://git.infradead.org/users/willy/linux-dax
Pull XArray fixes from Matthew Wilcox:
"Fix some oversights in the XArray porcelain API:
- support for m68k's two-byte aligned pointers
- reserving entries using xa_insert()
- missing xa_insert_bh() and xa_insert_irq() functions
- simplify using xa_for_each()
- use lockdep correctly
- a few other minor fixes and improvements"
* tag 'xarray-5.0-rc3' of git://git.infradead.org/users/willy/linux-dax:
XArray: Fix an arithmetic error in xa_is_err
XArray tests: Check mark 2 gets squashed
XArray: Fix typo in comment
XArray: Honour reserved entries in xa_insert
XArray: Permit storing 2-byte-aligned pointers
XArray: Change xa_for_each iterator
XArray: Turn xa_init_flags into a static inline
XArray tests: Add RCU locking
Pull networking fixes from David Miller:
1) Fix endless loop in nf_tables, from Phil Sutter.
2) Fix cross namespace ip6_gre tunnel hash list corruption, from
Olivier Matz.
3) Don't be too strict in phy_start_aneg() otherwise we might not allow
restarting auto negotiation. From Heiner Kallweit.
4) Fix various KMSAN uninitialized value cases in tipc, from Ying Xue.
5) Memory leak in act_tunnel_key, from Davide Caratti.
6) Handle chip errata of mv88e6390 PHY, from Andrew Lunn.
7) Remove linear SKB assumption in fou/fou6, from Eric Dumazet.
8) Missing udplite rehash callbacks, from Alexey Kodanev.
9) Log dirty pages properly in vhost, from Jason Wang.
10) Use consume_skb() in neigh_probe() as this is a normal free not a
drop, from Yang Wei. Likewise in macvlan_process_broadcast().
11) Missing device_del() in mdiobus_register() error paths, from Thomas
Petazzoni.
12) Fix checksum handling of short packets in mlx5, from Cong Wang.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (96 commits)
bpf: in __bpf_redirect_no_mac pull mac only if present
virtio_net: bulk free tx skbs
net: phy: phy driver features are mandatory
isdn: avm: Fix string plus integer warning from Clang
net/mlx5e: Fix cb_ident duplicate in indirect block register
net/mlx5e: Fix wrong (zero) TX drop counter indication for representor
net/mlx5e: Fix wrong error code return on FEC query failure
net/mlx5e: Force CHECKSUM_UNNECESSARY for short ethernet frames
tools: bpftool: Cleanup license mess
bpf: fix inner map masking to prevent oob under speculation
bpf: pull in pkt_sched.h header for tooling to fix bpftool build
selftests: forwarding: Add a test case for externally learned FDB entries
selftests: mlxsw: Test FDB offload indication
mlxsw: spectrum_switchdev: Do not treat static FDB entries as sticky
net: bridge: Mark FDB entries that were added by user as such
mlxsw: spectrum_fid: Update dummy FID index
mlxsw: pci: Return error on PCI reset timeout
mlxsw: pci: Increase PCI SW reset timeout
mlxsw: pci: Ring CQ's doorbell before RDQ's
MAINTAINERS: update email addresses of liquidio driver maintainers
...
Fix "reference to nonexisting document" warnings.
Fixes: b255e500c8 ("net: documentation: build a directory structure for drivers")
Signed-off-by: Otto Sabart <ottosabart@seberm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net_tstamp.h is an UAPI header, so it was moved under include/uapi.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The cp110-system-controller0.txt file was renamed to
cp110-system-controller.txt.
Fixes: 4aa5496980 ("dt-bindings: cp110: rename cp110 syscon file")
Signed-off-by: Otto Sabart <ottosabart@seberm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
A command line option is much more flexible than a config option and
the supporting code is small. Gets rid of #ifdefs in the code too...
Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
The changes introduced to allow rxrpc calls to be retried creates an issue
when it comes to refcounting afs_call structs. The problem is that when
rxrpc_send_data() queues the last packet for an asynchronous call, the
following sequence can occur:
(1) The notify_end_tx callback is invoked which causes the state in the
afs_call to be changed from AFS_CALL_CL_REQUESTING or
AFS_CALL_SV_REPLYING.
(2) afs_deliver_to_call() can then process event notifications from rxrpc
on the async_work queue.
(3) Delivery of events, such as an abort from the server, can cause the
afs_call state to be changed to AFS_CALL_COMPLETE on async_work.
(4) For an asynchronous call, afs_process_async_call() notes that the call
is complete and tried to clean up all the refs on async_work.
(5) rxrpc_send_data() might return the amount of data transferred
(success) or an error - which could in turn reflect a local error or a
received error.
Synchronising the clean up after rxrpc_kernel_send_data() returns an error
with the asynchronous cleanup is then tricky to get right.
Mostly revert commit c038a58ccf. The two API
functions the original commit added aren't currently used. This makes
rxrpc_kernel_send_data() always return successfully if it queued the data
it was given.
Note that this doesn't affect synchronous calls since their Rx notification
function merely pokes a wait queue and does not refcounting. The
asynchronous call notification function *has* to do refcounting and pass a
ref over the work item to avoid the need to sync the workqueue in call
cleanup.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull networking fixes from David Miller:
1) Fix regression in multi-SKB responses to RTM_GETADDR, from Arthur
Gautier.
2) Fix ipv6 frag parsing in openvswitch, from Yi-Hung Wei.
3) Unbounded recursion in ipv4 and ipv6 GUE tunnels, from Stefano
Brivio.
4) Use after free in hns driver, from Yonglong Liu.
5) icmp6_send() needs to handle the case of NULL skb, from Eric
Dumazet.
6) Missing rcu read lock in __inet6_bind() when operating on mapped
addresses, from David Ahern.
7) Memory leak in tipc-nl_compat_publ_dump(), from Gustavo A. R. Silva.
8) Fix PHY vs r8169 module loading ordering issues, from Heiner
Kallweit.
9) Fix bridge vlan memory leak, from Ido Schimmel.
10) Dev refcount leak in AF_PACKET, from Jason Gunthorpe.
11) Infoleak in ipv6_local_error(), flow label isn't completely
initialized. From Eric Dumazet.
12) Handle mv88e6390 errata, from Andrew Lunn.
13) Making vhost/vsock CID hashing consistent, from Zha Bin.
14) Fix lack of UMH cleanup when it unexpectedly exits, from Taehee Yoo.
15) Bridge forwarding must clear skb->tstamp, from Paolo Abeni.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (87 commits)
bnxt_en: Fix context memory allocation.
bnxt_en: Fix ring checking logic on 57500 chips.
mISDN: hfcsusb: Use struct_size() in kzalloc()
net: clear skb->tstamp in bridge forwarding path
net: bpfilter: disallow to remove bpfilter module while being used
net: bpfilter: restart bpfilter_umh when error occurred
net: bpfilter: use cleanup callback to release umh_info
umh: add exit routine for UMH process
isdn: i4l: isdn_tty: Fix some concurrency double-free bugs
vhost/vsock: fix vhost vsock cid hashing inconsistent
net: stmmac: Prevent RX starvation in stmmac_napi_poll()
net: stmmac: Fix the logic of checking if RX Watchdog must be enabled
net: stmmac: Check if CBS is supported before configuring
net: stmmac: dwxgmac2: Only clear interrupts that are active
net: stmmac: Fix PCI module removal leak
tools/bpf: fix bpftool map dump with bitfields
tools/bpf: test btf bitfield with >=256 struct member offset
bpf: fix bpffs bitfield pretty print
net: ethernet: mediatek: fix warning in phy_start_aneg
tcp: change txhash on SYN-data timeout
...
A bigger batch than I anticipated this week, for two reasons:
- Some fallout on Davinci from board file -> DTB conversion, that also
includes a few longer-standing fixes (i.e. not recent regressions).
- drivers/reset material that has been in linux-next for a while, but
didn't get sent to us until now for a variety of reasons (maintainer out
sick, holidays, etc). There's a functional dependency in there such that
one platform (Altera's SoCFPGA) won't boot without one of the patches;
instead of reverting the patch that got merged, I looked at this set
and decided it was small enough that I'll pick it up anyway. If you
disagree I can revisit with a smaller set.
That being said, there's also a handful of the usual stuff:
- Fix for a crash on Armada 7K/8K when the kernel touches PSCI-reserved
memory
- Fix for PCIe reset on Macchiatobin (Armada 8K development board, what
this email is sent from in fact :)
- Enable a few new-merged modules for Amlogic in arm64 defconfig
- Error path fixes on Integrator
- Build fix for Renesas and Qualcomm
- Initialization fix for Renesas RZ/G2E
+ A few more fixlets.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A bigger batch than I anticipated this week, for two reasons:
- Some fallout on Davinci from board file -> DTB conversion, that
also includes a few longer-standing fixes (i.e. not recent
regressions).
- drivers/reset material that has been in linux-next for a while, but
didn't get sent to us until now for a variety of reasons
(maintainer out sick, holidays, etc). There's a functional
dependency in there such that one platform (Altera's SoCFPGA) won't
boot without one of the patches; instead of reverting the patch
that got merged, I looked at this set and decided it was small
enough that I'll pick it up anyway. If you disagree I can revisit
with a smaller set.
That being said, there's also a handful of the usual stuff:
- Fix for a crash on Armada 7K/8K when the kernel touches
PSCI-reserved memory
- Fix for PCIe reset on Macchiatobin (Armada 8K development board,
what this email is sent from in fact :)
- Enable a few new-merged modules for Amlogic in arm64 defconfig
- Error path fixes on Integrator
- Build fix for Renesas and Qualcomm
- Initialization fix for Renesas RZ/G2E
.. plus a few more fixlets"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits)
ARM: integrator: impd1: use struct_size() in devm_kzalloc()
qcom-scm: Include <linux/err.h> header
gpio: pl061: handle failed allocations
ARM: dts: kirkwood: Fix polarity of GPIO fan lines
arm64: dts: marvell: mcbin: fix PCIe reset signal
arm64: dts: marvell: armada-ap806: reserve PSCI area
ARM: dts: da850-lcdk: Correct the sound card name
ARM: dts: da850-lcdk: Correct the audio codec regulators
ARM: dts: da850-evm: Correct the sound card name
ARM: dts: da850-evm: Correct the audio codec regulators
ARM: davinci: omapl138-hawk: fix label names in GPIO lookup entries
ARM: davinci: dm644x-evm: fix label names in GPIO lookup entries
ARM: davinci: dm355-evm: fix label names in GPIO lookup entries
ARM: davinci: da850-evm: fix label names in GPIO lookup entries
ARM: davinci: da830-evm: fix label names in GPIO lookup entries
arm64: defconfig: enable modules for amlogic s400 sound card
reset: uniphier-glue: Add AHCI reset control support in glue layer
dt-bindings: reset: uniphier: Add AHCI core reset description
reset: uniphier-usb3: Rename to reset-uniphier-glue
dt-bindings: reset: uniphier: Replace the expression of USB3 with generic peripherals
...
Here is one small sysfs change, and a documentation update for 5.0-rc2
The sysfs change moves from using BUG_ON to WARN_ON, as discussed in an
email thread on lkml while trying to track down another driver bug.
sysfs should not be crashing and preventing people from seeing where
they went wrong. Now it properly recovers and warns the developer.
The documentation update removes the use of BUS_ATTR() as the kernel is
moving away from this to use the specific BUS_ATTR_RW() and friends
instead. There are pending patches in all of the different subsystems
to remove the last users of this macro, but for now, don't advertise it
should be used anymore to keep new ones from being introduced.
Both have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here is one small sysfs change, and a documentation update for 5.0-rc2
The sysfs change moves from using BUG_ON to WARN_ON, as discussed in
an email thread on lkml while trying to track down another driver bug.
sysfs should not be crashing and preventing people from seeing where
they went wrong. Now it properly recovers and warns the developer.
The documentation update removes the use of BUS_ATTR() as the kernel
is moving away from this to use the specific BUS_ATTR_RW() and friends
instead. There are pending patches in all of the different subsystems
to remove the last users of this macro, but for now, don't advertise
it should be used anymore to keep new ones from being introduced.
Both have been in linux-next with no reported issues"
* tag 'driver-core-5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
Documentation: driver core: remove use of BUS_ATTR
sysfs: convert BUG_ON to WARN_ON
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Merge tag 'for-linus-20190112' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull request from Christoph, with little fixes all over the map
- Loop caching fix for offset/bs change (Jaegeuk Kim)
- Block documentation tweaks (Jeff, Jon, Weiping, John)
- null_blk zoned tweak (John)
- ahch mvebu suspend/resume support. Should have gone into the merge
window, but there was some confusion on which tree had it. (Miquel)
* tag 'for-linus-20190112' of git://git.kernel.dk/linux-block: (22 commits)
ata: ahci: mvebu: request PHY suspend/resume for Armada 3700
ata: ahci: mvebu: add Armada 3700 initialization needed for S2RAM
ata: ahci: mvebu: do Armada 38x configuration only on relevant SoCs
ata: ahci: mvebu: remove stale comment
ata: libahci_platform: comply to PHY framework
loop: drop caches if offset or block_size are changed
block: fix kerneldoc comment for blk_attempt_plug_merge()
nvme: don't initlialize ctrl->cntlid twice
nvme: introduce NVME_QUIRK_IGNORE_DEV_SUBNQN
nvme: pad fake subsys NQN vid and ssvid with zeros
nvme-multipath: zero out ANA log buffer
nvme-fabrics: unset write/poll queues for discovery controllers
nvme-tcp: don't ask if controller is fabrics
nvme-tcp: remove dead code
nvme-pci: fix out of bounds access in nvme_cqe_pending
nvme-pci: rerun irq setup on IO queue init errors
nvme-pci: use the same attributes when freeing host_mem_desc_bufs.
nvme-pci: fix the wrong setting of nr_maps
block: doc: add slice_idle_us to bfq documentation
block: clarify documentation for blk_{start|finish}_plug
...
Minor fixes for new code, corner cases, and documentation.
Patches are isolated and sufficiently described by the shortlog.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Radim Krčmář:
"Minor fixes for new code, corner cases, and documentation"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
x86/kvm/nVMX: don't skip emulated instruction twice when vmptr address is not backed
Documentation/virtual/kvm: Update URL for AMD SEV API specification
KVM/VMX: Avoid return error when flush tlb successfully in the hv_remote_flush_tlb_with_range()
kvm: sev: Fail KVM_SEV_INIT if already initialized
KVM: validate userspace input in kvm_clear_dirty_log_protect()
KVM: x86: Fix bit shifting in update_intel_pt_cfg
The primecell.txt and cpus.txt files were converted into YAML. This
patch updates old references with new ones.
Fixes: d3c207eeb9 ("dt-bindings: arm: Convert primecell binding to json-schema")
Fixes: 672951cbd1 ("dt-bindings: arm: Convert cpu binding to json-schema")
Signed-off-by: Otto Sabart <ottosabart@seberm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
The URL of [api-spec] in Documentation/virtual/kvm/amd-memory-encryption.rst
is no longer valid, replaced space with underscore.
Signed-off-by: Christophe de Dinechin <dinechin@redhat.com>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Pull x86 fixes from Ingo Molnar:
"A 32-bit build fix, CONFIG_RETPOLINE fixes and rename CONFIG_RESCTRL
to CONFIG_X86_RESCTRL"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, modpost: Replace last remnants of RETPOLINE with CONFIG_RETPOLINE
x86/cache: Rename config option to CONFIG_X86_RESCTRL
samples/seccomp: Fix 32-bit build
- Prevent integer overflows from occurring on 32-bit when
converting milliseconds to nanoseconds in the runtime PM
framework and update comments that still refer to jiffies
in it (Vincent Guittot, Ladislav Michl).
- Fix the SCMI cpufreq driver to always use the same frequency
units for arch_set_freq_scale() and make the scale-invariant
load tracking acutally work with this driver (Quentin Perret).
- Fix freeing of dynamic OPPs in the SCPI and SCMI cpufreq drivers
broken during the 4.20 defelopment cycle (Viresh Kumar).
- Prevent the cpufreq core from attempting to return the current
frequency of offline CPUs (Sudeep Holla).
- Add devfreq suspend and resume hooks (missed previously) to the
PM core to make the recently added system suspend and resume
support in devfreq actually work (Lukasz Luba).
- Update MAINTAINERS entries for cpufreq and cpuidle, mostly to add
references to new/current documentation to them (Rafael Wysocki).
- Fix a recently broken reference to cpuidle documentation (Otto
Sabart).
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Merge tag 'pm-5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These fix fallout after starting to use hrtimers in the runtime PM
framework, fix a few cpufreq issues, fix a recently broken reference
to cpuidle documentation, update MAINTAINERS entries for cpufreq and
cpuidle and make the recently added system suspend and resume support
in devfreq actually work.
Specifics:
- Prevent integer overflows from occurring on 32-bit when converting
milliseconds to nanoseconds in the runtime PM framework and update
comments that still refer to jiffies in it (Vincent Guittot,
Ladislav Michl).
- Fix the SCMI cpufreq driver to always use the same frequency units
for arch_set_freq_scale() and make the scale-invariant load
tracking acutally work with this driver (Quentin Perret).
- Fix freeing of dynamic OPPs in the SCPI and SCMI cpufreq drivers
broken during the 4.20 defelopment cycle (Viresh Kumar).
- Prevent the cpufreq core from attempting to return the current
frequency of offline CPUs (Sudeep Holla).
- Add devfreq suspend and resume hooks (missed previously) to the PM
core to make the recently added system suspend and resume support
in devfreq actually work (Lukasz Luba).
- Update MAINTAINERS entries for cpufreq and cpuidle, mostly to add
references to new/current documentation to them (Rafael Wysocki).
- Fix a recently broken reference to cpuidle documentation (Otto
Sabart)"
* tag 'pm-5.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM-runtime: Fix autosuspend_delay on 32bits arch
PM-runtime: Fix 'jiffies' in comments after switch to hrtimers
cpufreq: scmi: Fix frequency invariance in slow path
doc: trace: fix reference to cpuidle documentation file
cpufreq: check if policy is inactive early in __cpufreq_get()
cpufreq: scpi/scmi: Fix freeing of dynamic OPPs
cpuidle / Documentation: Update cpuidle MAINTAINERS entry
cpufreq / Documentation: Update cpufreq MAINTAINERS entry
PM: sleep: call devfreq suspend/resume
Of the tunables available for the bfq I/O scheduler, the only one
missing from the documentation in 'Documentation/block/bfq-iosched.txt'
is slice_idle_us. Add this tunable to the documentation and a short
explanation of its purpose.
Acked-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: John Pittman <jpittman@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Old cpuidle/sysfs.txt file was replaced in aa5eee355b. So, refer to
an updated file.
Fixes: aa5eee355b (Documentation: admin-guide: PM: Add cpuidle document)
Signed-off-by: Otto Sabart <ottosabart@seberm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
CONFIG_RESCTRL is too generic. The final goal is to have a generic
option called like this which is selected by the arch-specific ones
CONFIG_X86_RESCTRL and CONFIG_ARM64_RESCTRL. The generic one will
cover the resctrl filesystem and other generic and shared bits of
functionality.
Signed-off-by: Borislav Petkov <bp@suse.de>
Suggested-by: Ingo Molnar <mingo@kernel.org>
Requested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Babu Moger <babu.moger@amd.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: James Morse <james.morse@arm.com>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/20190108171401.GC12235@zn.tnic
This patch includes some fixes and cleanup for idle-page writeback.
1. writeback_limit interface
Now writeback_limit interface is rather conusing. For example, once
writeback limit budget is exausted, admin can see 0 from
/sys/block/zramX/writeback_limit which is same semantic with disable
writeback_limit at this moment. IOW, admin cannot tell that zero came
from disable writeback limit or exausted writeback limit.
To make the interface clear, let's sepatate enable of writeback limit to
another knob - /sys/block/zram0/writeback_limit_enable
* before:
while true :
# to re-enable writeback limit once previous one is used up
echo 0 > /sys/block/zram0/writeback_limit
echo $((200<<20)) > /sys/block/zram0/writeback_limit
..
.. # used up the writeback limit budget
* new
# To enable writeback limit, from the beginning, admin should
# enable it.
echo $((200<<20)) > /sys/block/zram0/writeback_limit
echo 1 > /sys/block/zram/0/writeback_limit_enable
while true :
echo $((200<<20)) > /sys/block/zram0/writeback_limit
..
.. # used up the writeback limit budget
It's much strightforward.
2. fix condition check idle/huge writeback mode check
The mode in writeback_store is not bit opeartion any more so no need to
use bit operations. Furthermore, current condition check is broken in
that it does writeback every pages regardless of huge/idle.
3. clean up idle_store
No need to use goto.
[minchan@kernel.org: missed spin_lock_init]
Link: http://lkml.kernel.org/r/20190103001601.GA255139@google.com
Link: http://lkml.kernel.org/r/20181224033529.19450-1-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Suggested-by: John Dias <joaodias@google.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc: John Dias <joaodias@google.com>
Cc: Srinivas Paladugu <srnvs@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
We are getting rid of the "raw" BUS_ATTR() macro, so fix up the
documentation to not refer to it anymore.
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Update the bpf_design_QA.rst to also reflect recent changes in
6c4fc209fc ("bpf: remove useless version check for prog load").
Suggested-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Add compatible strings for reset control of AHCI core implemented in
UniPhier SoCs. The reset control belongs to AHCI glue layer.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Replace the expression of "USB3 glue layer" with the glue layer of the
generic peripherals to allow other devices to use it. The reset control
belongs to this glue layer.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
"altr,stratix10-rst-mgr" is used for the Stratix10 reset manager.
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
xa_insert() should treat reserved entries as occupied, not as available.
Also, it should treat requests to insert a NULL pointer as a request
to reserve the slot. Add xa_insert_bh() and xa_insert_irq() for
completeness.
Signed-off-by: Matthew Wilcox <willy@infradead.org>
- improve boolinit.cocci and use_after_iter.cocci semantic patches
- fix alignment for kallsyms
- move 'asm goto' compiler test to Kconfig and clean up jump_label
CONFIG option
- generate asm-generic wrappers automatically if arch does not implement
mandatory UAPI headers
- remove redundant generic-y defines
- misc cleanups
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Merge tag 'kbuild-v4.21-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild updates from Masahiro Yamada:
- improve boolinit.cocci and use_after_iter.cocci semantic patches
- fix alignment for kallsyms
- move 'asm goto' compiler test to Kconfig and clean up jump_label
CONFIG option
- generate asm-generic wrappers automatically if arch does not
implement mandatory UAPI headers
- remove redundant generic-y defines
- misc cleanups
* tag 'kbuild-v4.21-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kconfig: rename generated .*conf-cfg to *conf-cfg
kbuild: remove unnecessary stubs for archheader and archscripts
kbuild: use assignment instead of define ... endef for filechk_* rules
arch: remove redundant UAPI generic-y defines
kbuild: generate asm-generic wrappers if mandatory headers are missing
arch: remove stale comments "UAPI Header export list"
riscv: remove redundant kernel-space generic-y
kbuild: change filechk to surround the given command with { }
kbuild: remove redundant target cleaning on failure
kbuild: clean up rule_dtc_dt_yaml
kbuild: remove UIMAGE_IN and UIMAGE_OUT
jump_label: move 'asm goto' support test to Kconfig
kallsyms: lower alignment on ARM
scripts: coccinelle: boolinit: drop warnings on named constants
scripts: coccinelle: check for redeclaration
kconfig: remove unused "file" field of yylval union
nds32: remove redundant kernel-space generic-y
nios2: remove unneeded HAS_DMA define
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Merge tag 'fscrypt_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt
Pull fscrypt updates from Ted Ts'o:
"Add Adiantum support for fscrypt"
* tag 'fscrypt_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt:
fscrypt: add Adiantum support
Fix various regressions introduced in this cycles:
- fix dma-debug tracking for the map_page / map_single consolidatation
- properly stub out DMA mapping symbols for !HAS_DMA builds to avoid
link failures
- fix AMD Gart direct mappings
- setup the dma address for no kernel mappings using the remap
allocator
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Merge tag 'dma-mapping-4.21-1' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fixes from Christoph Hellwig:
"Fix various regressions introduced in this cycles:
- fix dma-debug tracking for the map_page / map_single
consolidatation
- properly stub out DMA mapping symbols for !HAS_DMA builds to avoid
link failures
- fix AMD Gart direct mappings
- setup the dma address for no kernel mappings using the remap
allocator"
* tag 'dma-mapping-4.21-1' of git://git.infradead.org/users/hch/dma-mapping:
dma-direct: fix DMA_ATTR_NO_KERNEL_MAPPING for remapped allocations
x86/amd_gart: fix unmapping of non-GART mappings
dma-mapping: remove a few unused exports
dma-mapping: properly stub out the DMA API for !CONFIG_HAS_DMA
dma-mapping: remove dmam_{declare,release}_coherent_memory
dma-mapping: implement dmam_alloc_coherent using dmam_alloc_attrs
dma-mapping: implement dma_map_single_attrs using dma_map_page_attrs
This adds support for the hardware semaphores found in STM32MP1.
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Merge tag 'hwlock-v4.21' of git://github.com/andersson/remoteproc
Pull hwspinlock updates from Bjorn Andersson:
"This adds support for the hardware semaphores found in STM32MP1"
* tag 'hwlock-v4.21' of git://github.com/andersson/remoteproc:
hwspinlock: fix return value check in stm32_hwspinlock_probe()
hwspinlock: add STM32 hwspinlock device
dt-bindings: hwlock: Document STM32 hwspinlock bindings
If the kernel is built without CONFIG_BLK_DEV_ZONED, a modprobe
of the null_blk driver with zoned=1 fails with 'Invalid argument'.
This can be confusing to users, prompting a search as to why the
parameter is invalid. To assist in that search, add a bit more
information to the failure, additionally adding to the documentation
that CONFIG_BLK_DEV_ZONED is needed for zoned=1.
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: John Pittman <jpittman@redhat.com>
Added null_blk prefix to error message.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Add support for the Adiantum encryption mode to fscrypt. Adiantum is a
tweakable, length-preserving encryption mode with security provably
reducible to that of XChaCha12 and AES-256, subject to a security bound.
It's also a true wide-block mode, unlike XTS. See the paper
"Adiantum: length-preserving encryption for entry-level processors"
(https://eprint.iacr.org/2018/720.pdf) for more details. Also see
commit 059c2a4d8e ("crypto: adiantum - add Adiantum support").
On sufficiently long messages, Adiantum's bottlenecks are XChaCha12 and
the NH hash function. These algorithms are fast even on processors
without dedicated crypto instructions. Adiantum makes it feasible to
enable storage encryption on low-end mobile devices that lack AES
instructions; currently such devices are unencrypted. On ARM Cortex-A7,
on 4096-byte messages Adiantum encryption is about 4 times faster than
AES-256-XTS encryption; decryption is about 5 times faster.
In fscrypt, Adiantum is suitable for encrypting both file contents and
names. With filenames, it fixes a known weakness: when two filenames in
a directory share a common prefix of >= 16 bytes, with CTS-CBC their
encrypted filenames share a common prefix too, leaking information.
Adiantum does not have this problem.
Since Adiantum also accepts long tweaks (IVs), it's also safe to use the
master key directly for Adiantum encryption rather than deriving
per-file keys, provided that the per-file nonce is included in the IVs
and the master key isn't used for any other encryption mode. This
configuration saves memory and improves performance. A new fscrypt
policy flag is added to allow users to opt-in to this configuration.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Merge tag 'docs-5.0-fixes' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"A handful of late-arriving documentation fixes"
* tag 'docs-5.0-fixes' of git://git.lwn.net/linux:
doc: filesystems: fix bad references to nonexistent ext4.rst file
Documentation/admin-guide: update URL of LKML information link
Docs/kernel-api.rst: Remove blk-tag.c reference
Pull i2c updates from Wolfram Sang:
"I2C has only driver updates for you this time.
Mostly new IDs/DT compatibles, also SPDX conversions, small cleanups.
STM32F7 got FastMode+ and PM support, Axxia some reliabilty
improvements"
* 'i2c/for-5.0' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (26 commits)
i2c: Add Actions Semiconductor Owl family S700 I2C support
dt-bindings: i2c: Add S700 support for Actions Semi Soc's
i2c: ismt: Add support for Intel Cedar Fork
i2c: tegra: Switch to SPDX identifier
i2c: tegra: Add missing kerneldoc for some fields
i2c: tegra: Cleanup kerneldoc comments
i2c: axxia: support sequence command mode
dt-bindings: i2c: rcar: Add r8a774c0 support
dt-bindings: i2c: sh_mobile: Add r8a774c0 support
i2c: sh_mobile: Add support for r8a774c0 (RZ/G2E)
i2c: i2c-cros-ec-tunnel: Switch to SPDX identifier.
i2c: powermac: Use of_node_name_eq for node name comparisons
i2c-axxia: check for error conditions first
i2c-axxia: dedicated function to set client addr
dt-bindings: i2c: Use correct vendor prefix for Atmel
i2c: tegra: replace spin_lock_irqsave with spin_lock in ISR
eeprom: at24: add support for 24c2048
dt-bindings: eeprom: at24: add "atmel,24c2048" compatible string
i2c: i2c-stm32f7: add PM Runtime support
i2c: sh_mobile: add support for r8a77990 (R-Car E3)
...
Masahiro Yamada