14 Aug, 2020
1 commit
-
Pull documentation fixes from Jonathan Corbet:
"A handful of obvious fixes that wandered in during the merge window"* tag 'docs-5.9-2' of git://git.lwn.net/linux:
Documentation/locking/locktypes: fix the typo
doc/zh_CN: resolve undefined label warning in admin-guide index
doc/zh_CN: fix title heading markup in admin-guide cpu-load
docs: remove the 2.6 "Upgrading I2C Drivers" guide
docs: Correct the release date of 5.2 stable
mailmap: Update comments for with format and more detalis
docs: cdrom: Fix a typo and rst markup
Doc: admin-guide: use correct legends in kernel-parameters.txt
Documentation/features: refresh RISC-V arch support files
documentation: coccinelle: Improve command example for make C={1,2}
Core-api: Documentation: Replace deprecated :c:func: Usage
Dev-tools: Documentation: Replace deprecated :c:func: Usage
Filesystems: Documentation: Replace deprecated :c:func: Usage
docs: trace: fix a typo
12 Aug, 2020
1 commit
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Replace :c:func: with func() as the previous usage is deprecated.
Signed-off-by: Puranjay Mohan
Reviewed-by: Matthew Wilcox (Oracle)
Link: https://lore.kernel.org/r/20200810183019.22170-1-puranjay12@gmail.com
Signed-off-by: Jonathan Corbet
08 Aug, 2020
1 commit
-
Pull powerpc updates from Michael Ellerman:
- Add support for (optionally) using queued spinlocks & rwlocks.
- Support for a new faster system call ABI using the scv instruction on
Power9 or later.- Drop support for the PROT_SAO mmap/mprotect flag as it will be
unsupported on Power10 and future processors, leaving us with no way
to implement the functionality it requests. This risks breaking
userspace, though we believe it is unused in practice.- A bug fix for, and then the removal of, our custom stack expansion
checking. We now allow stack expansion up to the rlimit, like other
architectures.- Remove the remnants of our (previously disabled) topology update
code, which tried to react to NUMA layout changes on virtualised
systems, but was prone to crashes and other problems.- Add PMU support for Power10 CPUs.
- A change to our signal trampoline so that we don't unbalance the link
stack (branch return predictor) in the signal delivery path.- Lots of other cleanups, refactorings, smaller features and so on as
usual.Thanks to: Abhishek Goel, Alastair D'Silva, Alexander A. Klimov, Alexey
Kardashevskiy, Alistair Popple, Andrew Donnellan, Aneesh Kumar K.V, Anju
T Sudhakar, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Balamuruhan
S, Bharata B Rao, Bill Wendling, Bin Meng, Cédric Le Goater, Chris
Packham, Christophe Leroy, Christoph Hellwig, Daniel Axtens, Dan
Williams, David Lamparter, Desnes A. Nunes do Rosario, Erhard F., Finn
Thain, Frederic Barrat, Ganesh Goudar, Gautham R. Shenoy, Geoff Levand,
Greg Kurz, Gustavo A. R. Silva, Hari Bathini, Harish, Imre Kaloz, Joel
Stanley, Joe Perches, John Crispin, Jordan Niethe, Kajol Jain, Kamalesh
Babulal, Kees Cook, Laurent Dufour, Leonardo Bras, Li RongQing, Madhavan
Srinivasan, Mahesh Salgaonkar, Mark Cave-Ayland, Michal Suchanek, Milton
Miller, Mimi Zohar, Murilo Opsfelder Araujo, Nathan Chancellor, Nathan
Lynch, Naveen N. Rao, Nayna Jain, Nicholas Piggin, Oliver O'Halloran,
Palmer Dabbelt, Pedro Miraglia Franco de Carvalho, Philippe Bergheaud,
Pingfan Liu, Pratik Rajesh Sampat, Qian Cai, Qinglang Miao, Randy
Dunlap, Ravi Bangoria, Sachin Sant, Sam Bobroff, Sandipan Das, Santosh
Sivaraj, Satheesh Rajendran, Shirisha Ganta, Sourabh Jain, Srikar
Dronamraju, Stan Johnson, Stephen Rothwell, Thadeu Lima de Souza
Cascardo, Thiago Jung Bauermann, Tom Lane, Vaibhav Jain, Vladis Dronov,
Wei Yongjun, Wen Xiong, YueHaibing.* tag 'powerpc-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (337 commits)
selftests/powerpc: Fix pkey syscall redefinitions
powerpc: Fix circular dependency between percpu.h and mmu.h
powerpc/powernv/sriov: Fix use of uninitialised variable
selftests/powerpc: Skip vmx/vsx/tar/etc tests on older CPUs
powerpc/40x: Fix assembler warning about r0
powerpc/papr_scm: Add support for fetching nvdimm 'fuel-gauge' metric
powerpc/papr_scm: Fetch nvdimm performance stats from PHYP
cpuidle: pseries: Fixup exit latency for CEDE(0)
cpuidle: pseries: Add function to parse extended CEDE records
cpuidle: pseries: Set the latency-hint before entering CEDE
selftests/powerpc: Fix online CPU selection
powerpc/perf: Consolidate perf_callchain_user_[64|32]()
powerpc/pseries/hotplug-cpu: Remove double free in error path
powerpc/pseries/mobility: Add pr_debug() for device tree changes
powerpc/pseries/mobility: Set pr_fmt()
powerpc/cacheinfo: Warn if cache object chain becomes unordered
powerpc/cacheinfo: Improve diagnostics about malformed cache lists
powerpc/cacheinfo: Use name@unit instead of full DT path in debug messages
powerpc/cacheinfo: Set pr_fmt()
powerpc: fix function annotations to avoid section mismatch warnings with gcc-10
...
05 Aug, 2020
2 commits
-
Pull documentation updates from Jonathan Corbet:
"It's been a busy cycle for documentation - hopefully the busiest for a
while to come. Changes include:- Some new Chinese translations
- Progress on the battle against double words words and non-HTTPS
URLs- Some block-mq documentation
- More RST conversions from Mauro. At this point, that task is
essentially complete, so we shouldn't see this kind of churn again
for a while. Unless we decide to switch to asciidoc or
something...:)- Lots of typo fixes, warning fixes, and more"
* tag 'docs-5.9' of git://git.lwn.net/linux: (195 commits)
scripts/kernel-doc: optionally treat warnings as errors
docs: ia64: correct typo
mailmap: add entry for
doc/zh_CN: add cpu-load Chinese version
Documentation/admin-guide: tainted-kernels: fix spelling mistake
MAINTAINERS: adjust kprobes.rst entry to new location
devices.txt: document rfkill allocation
PCI: correct flag name
docs: filesystems: vfs: correct flag name
docs: filesystems: vfs: correct sync_mode flag names
docs: path-lookup: markup fixes for emphasis
docs: path-lookup: more markup fixes
docs: path-lookup: fix HTML entity mojibake
CREDITS: Replace HTTP links with HTTPS ones
docs: process: Add an example for creating a fixes tag
doc/zh_CN: add Chinese translation prefer section
doc/zh_CN: add clearing-warn-once Chinese version
doc/zh_CN: add admin-guide index
doc:it_IT: process: coding-style.rst: Correct __maybe_unused compiler label
futex: MAINTAINERS: Re-add selftests directory
... -
Pull printk updates from Petr Mladek:
- Herbert Xu made printk header file self-contained.
- Andy Shevchenko and Sergey Senozhatsky cleaned up console->setup()
error handling.- Andy Shevchenko did some cleanups (e.g. sparse warning) in vsprintf
code.- Minor documentation updates.
* tag 'printk-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
lib/vsprintf: Force type of flags value for gfp_t
lib/vsprintf: Replace custom spec to print decimals with generic one
lib/vsprintf: Replace hidden BUILD_BUG_ON() with static_assert()
printk: Make linux/printk.h self-contained
doc:kmsg: explicitly state the return value in case of SEEK_CUR
Replace HTTP links with HTTPS ones: vsprintf
hvc: unify console setup naming
console: Fix trivia typo 'change' -> 'chance'
console: Propagate error code from console ->setup()
tty: hvc: Return proper error code from console ->setup() hook
serial: sunzilog: Return proper error code from console ->setup() hook
serial: sunsab: Return proper error code from console ->setup() hook
mips: Return proper error code from console ->setup() hook
04 Aug, 2020
1 commit
-
Pull crypto updates from Herbert Xu:
"API:
- Add support for allocating transforms on a specific NUMA Node
- Introduce the flag CRYPTO_ALG_ALLOCATES_MEMORY for storage usersAlgorithms:
- Drop PMULL based ghash on arm64
- Fixes for building with clang on x86
- Add sha256 helper that does the digest in one go
- Add SP800-56A rev 3 validation checks to dhDrivers:
- Permit users to specify NUMA node in hisilicon/zip
- Add support for i.MX6 in imx-rngc
- Add sa2ul crypto driver
- Add BA431 hwrng driver
- Add Ingenic JZ4780 and X1000 hwrng driver
- Spread IRQ affinity in inside-secure and marvell/cesa"* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (157 commits)
crypto: sa2ul - Fix inconsistent IS_ERR and PTR_ERR
hwrng: core - remove redundant initialization of variable ret
crypto: x86/curve25519 - Remove unused carry variables
crypto: ingenic - Add hardware RNG for Ingenic JZ4780 and X1000
dt-bindings: RNG: Add Ingenic RNG bindings.
crypto: caam/qi2 - add module alias
crypto: caam - add more RNG hw error codes
crypto: caam/jr - remove incorrect reference to caam_jr_register()
crypto: caam - silence .setkey in case of bad key length
crypto: caam/qi2 - create ahash shared descriptors only once
crypto: caam/qi2 - fix error reporting for caam_hash_alloc
crypto: caam - remove deadcode on 32-bit platforms
crypto: ccp - use generic power management
crypto: xts - Replace memcpy() invocation with simple assignment
crypto: marvell/cesa - irq balance
crypto: inside-secure - irq balance
crypto: ecc - SP800-56A rev 3 local public key validation
crypto: dh - SP800-56A rev 3 local public key validation
crypto: dh - check validity of Z before export
lib/mpi: Add mpi_sub_ui()
...
24 Jul, 2020
3 commits
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Fix the following warning:
WARNING: Definition list ends without a blank line;
unexpected unindent.By switching to the literal block syntax.
Signed-off-by: Daniel W. S. Almeida
Link: https://lore.kernel.org/r/20200718165107.625847-8-dwlsalmeida@gmail.com
Signed-off-by: Jonathan Corbet -
Changelog of commit dcda9b04713c ("mm, tree wide: replace __GFP_REPEAT by
__GFP_RETRY_MAYFAIL with more useful semantic") has very nice description
of GFP flags that affect reclaim behaviour of the page allocator.It would be pity to keep this description buried in the log so let's expose
it in the Documentation/ as well.Cc: Michal Hocko
Acked-by: Michal Hocko
Signed-off-by: Mike Rapoport
Link: https://lore.kernel.org/r/20200719153641.231131-1-rppt@kernel.org
Signed-off-by: Jonathan Corbet -
fix typo for core-api/cpu_hotplug documentation
Signed-off-by: Yaohui Wang
Link: https://lore.kernel.org/r/20200722073818.20605-1-dillionmango@gmail.com
Signed-off-by: Jonathan Corbet
23 Jul, 2020
2 commits
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There's no reason to have two interfaces when there's only one caller.
Removing _possible saves text and simplifies future changes.Signed-off-by: Daniel Jordan
Cc: Herbert Xu
Cc: Steffen Klassert
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Herbert Xu -
padata_stop() has two callers and is unnecessary in both cases. When
pcrypt calls it before padata_free(), it's being unloaded so there are
no outstanding padata jobs[0]. When __padata_free() calls it, it's
either along the same path or else pcrypt initialization failed, which
of course means there are also no outstanding jobs.Removing it simplifies padata and saves text.
[0] https://lore.kernel.org/linux-crypto/20191119225017.mjrak2fwa5vccazl@gondor.apana.org.au/
Signed-off-by: Daniel Jordan
Cc: Herbert Xu
Cc: Steffen Klassert
Cc: linux-crypto@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Herbert Xu
16 Jul, 2020
1 commit
-
This effectively reverts commit 3aa565f53c39 ("powerpc/pseries: Add
hooks to put the CPU into an appropriate offline state"), which added
an offline mode for CPUs which uses the H_CEDE hcall instead of the
architected stop-self RTAS function in order to facilitate "folding"
of dedicated mode processors on PowerVM platforms to achieve energy
savings. This has been the default offline mode since its
introduction.There's nothing about stop-self that would prevent the hypervisor from
achieving the energy savings available via H_CEDE, so the original
premise of this change appears to be flawed.I also have encountered the claim that the transition to and from
ceded state is much faster than stop-self/start-cpu. Certainly we
would not want to use stop-self as an *idle* mode. That is what H_CEDE
is for. However, this difference is insignificant in the context of
Linux CPU hotplug, where the latency of an offline or online operation
on current systems is on the order of 100ms, mainly attributable to
all the various subsystems' cpuhp callbacks.The cede offline mode also prevents accurate accounting, as discussed
before:
https://lore.kernel.org/linuxppc-dev/1571740391-3251-1-git-send-email-ego@linux.vnet.ibm.com/Unconditionally use stop-self to offline processor threads. This is
the architected method for offlining CPUs on PAPR systems.The "cede_offline" boot parameter is rendered obsolete.
Removing this code enables the removal of the partition suspend code
which temporarily onlines all present CPUs.Fixes: 3aa565f53c39 ("powerpc/pseries: Add hooks to put the CPU into an appropriate offline state")
Signed-off-by: Nathan Lynch
Reviewed-by: Gautham R. Shenoy
Signed-off-by: Michael Ellerman
Link: https://lore.kernel.org/r/20200612051238.1007764-2-nathanl@linux.ibm.com
13 Jul, 2020
2 commits
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Drop the doubled word "the".
Signed-off-by: Randy Dunlap
Cc: Jonathan Corbet
Cc: linux-doc@vger.kernel.org
Link: https://lore.kernel.org/r/20200707180414.10467-4-rdunlap@infradead.org
Signed-off-by: Jonathan Corbet -
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.Signed-off-by: Alexander A. Klimov
Link: https://lore.kernel.org/r/20200713144103.35049-1-grandmaster@al2klimov.de
Signed-off-by: Jonathan Corbet
11 Jul, 2020
1 commit
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Pull networking fixes from David Miller:
1) Restore previous behavior of CAP_SYS_ADMIN wrt loading networking
BPF programs, from Maciej Żenczykowski.2) Fix dropped broadcasts in mac80211 code, from Seevalamuthu
Mariappan.3) Slay memory leak in nl80211 bss color attribute parsing code, from
Luca Coelho.4) Get route from skb properly in ip_route_use_hint(), from Miaohe Lin.
5) Don't allow anything other than ARPHRD_ETHER in llc code, from Eric
Dumazet.6) xsk code dips too deeply into DMA mapping implementation internals.
Add dma_need_sync and use it. From Christoph Hellwig7) Enforce power-of-2 for BPF ringbuf sizes. From Andrii Nakryiko.
8) Check for disallowed attributes when loading flow dissector BPF
programs. From Lorenz Bauer.9) Correct packet injection to L3 tunnel devices via AF_PACKET, from
Jason A. Donenfeld.10) Don't advertise checksum offload on ipa devices that don't support
it. From Alex Elder.11) Resolve several issues in TCP MD5 signature support. Missing memory
barriers, bogus options emitted when using syncookies, and failure
to allow md5 key changes in established states. All from Eric
Dumazet.12) Fix interface leak in hsr code, from Taehee Yoo.
13) VF reset fixes in hns3 driver, from Huazhong Tan.
14) Make loopback work again with ipv6 anycast, from David Ahern.
15) Fix TX starvation under high load in fec driver, from Tobias
Waldekranz.16) MLD2 payload lengths not checked properly in bridge multicast code,
from Linus Lüssing.17) Packet scheduler code that wants to find the inner protocol
currently only works for one level of VLAN encapsulation. Allow
Q-in-Q situations to work properly here, from Toke
Høiland-Jørgensen.18) Fix route leak in l2tp, from Xin Long.
19) Resolve conflict between the sk->sk_user_data usage of bpf reuseport
support and various protocols. From Martin KaFai Lau.20) Fix socket cgroup v2 reference counting in some situations, from
Cong Wang.21) Cure memory leak in mlx5 connection tracking offload support, from
Eli Britstein.* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (146 commits)
mlxsw: pci: Fix use-after-free in case of failed devlink reload
mlxsw: spectrum_router: Remove inappropriate usage of WARN_ON()
net: macb: fix call to pm_runtime in the suspend/resume functions
net: macb: fix macb_suspend() by removing call to netif_carrier_off()
net: macb: fix macb_get/set_wol() when moving to phylink
net: macb: mark device wake capable when "magic-packet" property present
net: macb: fix wakeup test in runtime suspend/resume routines
bnxt_en: fix NULL dereference in case SR-IOV configuration fails
libbpf: Fix libbpf hashmap on (I)LP32 architectures
net/mlx5e: CT: Fix memory leak in cleanup
net/mlx5e: Fix port buffers cell size value
net/mlx5e: Fix 50G per lane indication
net/mlx5e: Fix CPU mapping after function reload to avoid aRFS RX crash
net/mlx5e: Fix VXLAN configuration restore after function reload
net/mlx5e: Fix usage of rcu-protected pointer
net/mxl5e: Verify that rpriv is not NULL
net/mlx5: E-Switch, Fix vlan or qos setting in legacy mode
net/mlx5: Fix eeprom support for SFP module
cgroup: Fix sock_cgroup_data on big-endian.
selftests: bpf: Fix detach from sockmap tests
...
03 Jul, 2020
1 commit
-
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.Signed-off-by: Alexander A. Klimov
Reviewed-by: Petr Mladek
Reviewed-by: Sergey Senozhatsky
Signed-off-by: Petr Mladek
Link: https://lore.kernel.org/r/20200702200536.13389-1-grandmaster@al2klimov.de
30 Jun, 2020
1 commit
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Add a new API to check if calls to dma_sync_single_for_{device,cpu} are
required for a given DMA streaming mapping.Signed-off-by: Christoph Hellwig
Signed-off-by: Daniel Borkmann
Link: https://lore.kernel.org/bpf/20200629130359.2690853-2-hch@lst.de
27 Jun, 2020
2 commits
-
There are a number of random documents that seem to be
describing some aspects of the core-api. Move them to such
directory, adding them at the core-api/index.rst file.Signed-off-by: Mauro Carvalho Chehab
Link: https://lore.kernel.org/r/86d979ed183adb76af93a92f20189bccf97f0055.1592918949.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet -
As we moved those files to core-api, fix references to point
to their newer locations.Signed-off-by: Mauro Carvalho Chehab
Link: https://lore.kernel.org/r/37b2fd159fbc7655dbf33b3eb1215396a25f6344.1592895969.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet
26 Jun, 2020
1 commit
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Now there are 5 cases. Updated the same.
Link: http://lkml.kernel.org/r/1592422023-7401-1-git-send-email-jrdr.linux@gmail.com
Signed-off-by: Souptick Joarder
Reviewed-by: John Hubbard
Cc: Jonathan Corbet
Cc: Jan Kara
Cc: Kirill A. Shutemov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
20 Jun, 2020
1 commit
-
Now there are 5 cases. Updated the same.
Signed-off-by: Souptick Joarder
Reviewed-by: John Hubbard
Link: https://lore.kernel.org/r/1592422023-7401-1-git-send-email-jrdr.linux@gmail.com
Signed-off-by: Jonathan Corbet
11 Jun, 2020
1 commit
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Pull more documentation updates from Jonathan Corbet:
"A handful of late-arriving docs fixes, along with a patch changing a
lot of HTTP links to HTTPS that had to be yanked and redone before the
first pull"* tag 'docs-5.8-2' of git://git.lwn.net/linux:
docs/memory-barriers.txt/kokr: smp_mb__{before,after}_atomic(): update Documentation
Documentation: devres: add missing entry for devm_platform_get_and_ioremap_resource()
Replace HTTP links with HTTPS ones: documentation
docs: it_IT: address invalid reference warnings
doc: zh_CN: use doc reference to resolve undefined label warning
docs: Update the location of the LF NDA program
docs: dev-tools: coccinelle: underlines
09 Jun, 2020
2 commits
-
Patch series "vhost, docs: convert to pin_user_pages(), new "case 5""
It recently became clear to me that there are some get_user_pages*()
callers that don't fit neatly into any of the four cases that are so far
listed in pin_user_pages.rst. vhost.c is one of those.Add a Case 5 to the documentation, and refer to that when converting
vhost.c.Thanks to Jan Kara for helping me (again) in understanding the
interaction between get_user_pages() and page writeback [1].This is based on today's mmotm, which has a nearby patch to
pin_user_pages.rst that rewords cases 3 and 4.Note that I have only compile-tested the vhost.c patch, although that
does also include cross-compiling for a few other arches. Any run-time
testing would be greatly appreciated.[1] https://lore.kernel.org/r/20200529070343.GL14550@quack2.suse.cz
This patch (of 2):
There are four cases listed in pin_user_pages.rst. These are intended
to help developers figure out whether to use get_user_pages*(), or
pin_user_pages*(). However, the four cases do not cover all the
situations. For example, drivers/vhost/vhost.c has a "pin, write to
page, set page dirty, unpin" case.Add a fifth case, to help explain that there is a general pattern that
requires pin_user_pages*() API calls.[jhubbard@nvidia.com: v2]
Link: http://lkml.kernel.org/r/20200601052633.853874-2-jhubbard@nvidia.comSigned-off-by: John Hubbard
Signed-off-by: Andrew Morton
Cc: Vlastimil Babka
Cc: Jan Kara
Cc: Jérôme Glisse
Cc: Dave Chinner
Cc: Jonathan Corbet
Cc: Souptick Joarder
Cc: "Michael S . Tsirkin"
Cc: Jason Wang
Link: http://lkml.kernel.org/r/20200529234309.484480-1-jhubbard@nvidia.com
Link: http://lkml.kernel.org/r/20200529234309.484480-2-jhubbard@nvidia.com
Signed-off-by: Linus Torvalds -
Update case 3 so that it covers the use of mmu notifiers, for hardware
that does, or does not have replayable page faults.Also, elaborate case 4 slightly, as it was quite cryptic.
Signed-off-by: John Hubbard
Signed-off-by: Andrew Morton
Cc: Daniel Vetter
Cc: Jérôme Glisse
Cc: Vlastimil Babka
Cc: Jan Kara
Cc: Dave Chinner
Cc: Jonathan Corbet
Link: http://lkml.kernel.org/r/20200527194953.11130-1-jhubbard@nvidia.com
Signed-off-by: Linus Torvalds
08 Jun, 2020
1 commit
-
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.Deterministic algorithm:
For each file:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.Signed-off-by: Alexander A. Klimov
Link: https://lore.kernel.org/r/20200526060544.25127-1-grandmaster@al2klimov.de
Signed-off-by: Jonathan Corbet
04 Jun, 2020
1 commit
-
Add Documentation for multithreaded jobs.
Signed-off-by: Daniel Jordan
Signed-off-by: Andrew Morton
Tested-by: Josh Triplett
Cc: Alexander Duyck
Cc: Alex Williamson
Cc: Dan Williams
Cc: Dave Hansen
Cc: David Hildenbrand
Cc: Herbert Xu
Cc: Jason Gunthorpe
Cc: Jonathan Corbet
Cc: Kirill Tkhai
Cc: Michal Hocko
Cc: Pavel Machek
Cc: Pavel Tatashin
Cc: Peter Zijlstra
Cc: Randy Dunlap
Cc: Robert Elliott
Cc: Shile Zhang
Cc: Steffen Klassert
Cc: Steven Sistare
Cc: Tejun Heo
Cc: Zi Yan
Link: http://lkml.kernel.org/r/20200527173608.2885243-9-daniel.m.jordan@oracle.com
Signed-off-by: Linus Torvalds
03 Jun, 2020
2 commits
-
Merge updates from Andrew Morton:
"A few little subsystems and a start of a lot of MM patches.Subsystems affected by this patch series: squashfs, ocfs2, parisc,
vfs. With mm subsystems: slab-generic, slub, debug, pagecache, gup,
swap, memcg, pagemap, memory-failure, vmalloc, kasan"* emailed patches from Andrew Morton : (128 commits)
kasan: move kasan_report() into report.c
mm/mm_init.c: report kasan-tag information stored in page->flags
ubsan: entirely disable alignment checks under UBSAN_TRAP
kasan: fix clang compilation warning due to stack protector
x86/mm: remove vmalloc faulting
mm: remove vmalloc_sync_(un)mappings()
x86/mm/32: implement arch_sync_kernel_mappings()
x86/mm/64: implement arch_sync_kernel_mappings()
mm/ioremap: track which page-table levels were modified
mm/vmalloc: track which page-table levels were modified
mm: add functions to track page directory modifications
s390: use __vmalloc_node in stack_alloc
powerpc: use __vmalloc_node in alloc_vm_stack
arm64: use __vmalloc_node in arch_alloc_vmap_stack
mm: remove vmalloc_user_node_flags
mm: switch the test_vmalloc module to use __vmalloc_node
mm: remove __vmalloc_node_flags_caller
mm: remove both instances of __vmalloc_node_flags
mm: remove the prot argument to __vmalloc_node
mm: remove the pgprot argument to __vmalloc
... -
Switch all callers to map_kernel_range, which symmetric to the unmap side
(as well as the _noflush versions).Signed-off-by: Christoph Hellwig
Signed-off-by: Andrew Morton
Acked-by: Peter Zijlstra (Intel)
Cc: Christian Borntraeger
Cc: Christophe Leroy
Cc: Daniel Vetter
Cc: David Airlie
Cc: Gao Xiang
Cc: Greg Kroah-Hartman
Cc: Haiyang Zhang
Cc: Johannes Weiner
Cc: "K. Y. Srinivasan"
Cc: Laura Abbott
Cc: Mark Rutland
Cc: Michael Kelley
Cc: Minchan Kim
Cc: Nitin Gupta
Cc: Robin Murphy
Cc: Sakari Ailus
Cc: Stephen Hemminger
Cc: Sumit Semwal
Cc: Wei Liu
Cc: Benjamin Herrenschmidt
Cc: Catalin Marinas
Cc: Heiko Carstens
Cc: Paul Mackerras
Cc: Vasily Gorbik
Cc: Will Deacon
Link: http://lkml.kernel.org/r/20200414131348.444715-17-hch@lst.de
Signed-off-by: Linus Torvalds
02 Jun, 2020
3 commits
-
Pull documentation updates from Jonathan Corbet:
"A fair amount of stuff this time around, dominated by yet another
massive set from Mauro toward the completion of the RST conversion. I
*really* hope we are getting close to the end of this. Meanwhile,
those patches reach pretty far afield to update document references
around the tree; there should be no actual code changes there. There
will be, alas, more of the usual trivial merge conflicts.Beyond that we have more translations, improvements to the sphinx
scripting, a number of additions to the sysctl documentation, and lots
of fixes"* tag 'docs-5.8' of git://git.lwn.net/linux: (130 commits)
Documentation: fixes to the maintainer-entry-profile template
zswap: docs/vm: Fix typo accept_threshold_percent in zswap.rst
tracing: Fix events.rst section numbering
docs: acpi: fix old http link and improve document format
docs: filesystems: add info about efivars content
Documentation: LSM: Correct the basic LSM description
mailmap: change email for Ricardo Ribalda
docs: sysctl/kernel: document unaligned controls
Documentation: admin-guide: update bug-hunting.rst
docs: sysctl/kernel: document ngroups_max
nvdimm: fixes to maintainter-entry-profile
Documentation/features: Correct RISC-V kprobes support entry
Documentation/features: Refresh the arch support status files
Revert "docs: sysctl/kernel: document ngroups_max"
docs: move locking-specific documents to locking/
docs: move digsig docs to the security book
docs: move the kref doc into the core-api book
docs: add IRQ documentation at the core-api book
docs: debugging-via-ohci1394.txt: add it to the core-api book
docs: fix references for ipmi.rst file
... -
Pull x86 build updates from Ingo Molnar:
"Misc dependency fixes, plus a documentation update about memory
protection keys support"* tag 'x86-build-2020-06-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/Kconfig: Update config and kernel doc for MPK feature on AMD
x86/boot: Discard .discard.unreachable for arch/x86/boot/compressed/vmlinux
x86/boot/build: Add phony targets in arch/x86/boot/Makefile to PHONY
x86/boot/build: Make 'make bzlilo' not depend on vmlinux or $(obj)/bzImage
x86/boot/build: Add cpustr.h to targets and remove clean-files -
Pull printk updates from Petr Mladek:
- Benjamin Herrenschmidt solved a problem with non-matched console
aliases by first checking consoles defined on the command line. It is
a more conservative approach than the previous attempts.- Benjamin also made sure that the console accessible via /dev/console
always has CON_CONSDEV flag.- Andy Shevchenko added the %ptT modifier for printing struct time64_t.
It extends the existing %ptR handling for struct rtc_time.- Bruno Meneguele fixed /dev/kmsg error value returned by unsupported
SEEK_CUR.- Tetsuo Handa removed unused pr_cont_once().
... and a few small fixes.
* tag 'printk-for-5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
printk: Remove pr_cont_once()
printk: handle blank console arguments passed in.
kernel/printk: add kmsg SEEK_CUR handling
printk: Fix a typo in comment "interator"->"iterator"
usb: pulse8-cec: Switch to use %ptT
ARM: bcm2835: Switch to use %ptT
lib/vsprintf: Print time64_t in human readable format
lib/vsprintf: update comment about simple_strto() functions
printk: Correctly set CON_CONSDEV even when preferred console was not registered
printk: Fix preferred console selection with multiple matches
printk: Move console matching logic into a separate function
printk: Convert a use of sprintf to snprintf in console_unlock
29 May, 2020
1 commit
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AMD's next generation of EPYC processors support the MPK (Memory
Protection Keys) feature. Update the dependency and documentation.Signed-off-by: Babu Moger
Signed-off-by: Borislav Petkov
Reviewed-by: Dave Hansen
Link: https://lkml.kernel.org/r/159068199556.26992.17733929401377275140.stgit@naples-babu.amd.com
20 May, 2020
1 commit
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There are users which print time and date represented by content of
time64_t type in human readable format.Instead of open coding that each time introduce %ptT[dt][r] specifier.
Few test cases for %ptT specifier has been added as well.
Link: https://lore.kernel.org/r/20200415170046.33374-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko
Reviewed-by: Alexandre Belloni
Acked-by: Sergey Senozhatsky
Rewieved-by: Petr Mladek
Signed-off-by: Petr Mladek
16 May, 2020
4 commits
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This document covers core kernel objects. So, add it into the core-api
book.Signed-off-by: Mauro Carvalho Chehab
Link: https://lore.kernel.org/r/f385af13b4a6d3ff8c89beedd4506900e79ca72e.1588345503.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet -
There are 4 IRQ documentation files under Documentation/*.txt.
Move them into a new directory (core-api/irq) and add a new
index file for it.While here, use a title markup for the Debugging section of the
irq-domain.rst file.Signed-off-by: Mauro Carvalho Chehab
Link: https://lore.kernel.org/r/2da7485c3718e1442e6b4c2dd66857b776e8899b.1588345503.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet -
There is an special chapter inside the core-api book about
some debug infrastructure like tracepoints and debug objects.It sounded to me that this is the best place to add a chapter
explaining how to use a FireWire controller to do remote
kernel debugging, as explained on this document.Signed-off-by: Mauro Carvalho Chehab
Link: https://lore.kernel.org/r/9b489d36d08ad89d3ad5aefef1f52a0715b29716.1588345503.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet -
Move those files to the core-api, where they belong, renaming
them to ReST and adding to the core API index file.Signed-off-by: Mauro Carvalho Chehab
Link: https://lore.kernel.org/r/a1517185418cb9d987f566ef85a5dd5c7c99f34e.1588345503.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet
15 May, 2020
1 commit
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Usage of plain %s conversion specifier in bpf_trace_printk() suffers from the
very same issue as bpf_probe_read{,str}() helpers, that is, it is broken on
archs with overlapping address ranges.While the helpers have been addressed through work in 6ae08ae3dea2 ("bpf: Add
probe_read_{user, kernel} and probe_read_{user, kernel}_str helpers"), we need
an option for bpf_trace_printk() as well to fix it.Similarly as with the helpers, force users to make an explicit choice by adding
%pks and %pus specifier to bpf_trace_printk() which will then pick the corresponding
strncpy_from_unsafe*() variant to perform the access under KERNEL_DS or USER_DS.
The %pk* (kernel specifier) and %pu* (user specifier) can later also be extended
for other objects aside strings that are probed and printed under tracing, and
reused out of other facilities like bpf_seq_printf() or BTF based type printing.Existing behavior of %s for current users is still kept working for archs where it
is not broken and therefore gated through CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE.
For archs not having this property we fall-back to pick probing under KERNEL_DS as
a sensible default.Fixes: 8d3b7dce8622 ("bpf: add support for %s specifier to bpf_trace_printk()")
Reported-by: Linus Torvalds
Reported-by: Christoph Hellwig
Signed-off-by: Daniel Borkmann
Signed-off-by: Alexei Starovoitov
Cc: Masami Hiramatsu
Cc: Brendan Gregg
Link: https://lore.kernel.org/bpf/20200515101118.6508-4-daniel@iogearbox.net
05 May, 2020
1 commit
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Update the definitions of some functions listed in the kobject
document, since they have been changed.Signed-off-by: Qi Zheng
Link: https://lore.kernel.org/r/20200505061828.42952-1-arch0.zheng@gmail.com
Signed-off-by: Jonathan Corbet
22 Apr, 2020
1 commit
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This file is close enough to being in rst format that I didn't feel
the need to alter it in any way.Signed-off-by: Matthew Wilcox (Oracle)
Acked-by: Michel Lespinasse
Link: https://lore.kernel.org/r/20200401173343.17472-1-willy@infradead.org
Signed-off-by: Jonathan Corbet
