Pull more networking fixes from Jakub Kicinski:
"Slightly lighter pull request to get back into the Thursday cadence.
Current release - always broken:
- can: mcp251xfd: fix Tx/Rx ring buffer driver race conditions
- dsa: hellcreek: fix led_classdev build errors
Previous releases - regressions:
- ipv6: fib: flush exceptions when purging route to avoid netdev
reference leak
- ip_tunnels: fix pmtu check in nopmtudisc mode
- ip: always refragment ip defragmented packets to avoid MTU issues
when forwarding through tunnels, correct "packet too big" message
is prohibitively tricky to generate
- s390/qeth: fix locking for discipline setup / removal and during
recovery to prevent both deadlocks and races
- mlx5: Use port_num 1 instead of 0 when delete a RoCE address
Previous releases - always broken:
- cdc_ncm: correct overhead calculation in delayed_ndp_size to
prevent out of bound accesses with Huawei 909s-120 LTE module
- fix stmmac dwmac-sun8i suspend/resume:
- PHY being left powered off
- MAC syscon configuration being reset
- reference to the reset controller being improperly dropped
- qrtr: fix null-ptr-deref in qrtr_ns_remove
- can: tcan4x5x: fix bittiming const, use common bittiming from m_can
driver
- mlx5e: CT: Use per flow counter when CT flow accounting is enabled
- mlx5e: Fix SWP offsets when vlan inserted by driver
Misc:
- bpf: Fix a task_iter bug caused by a bpf -> net merge conflict
resolution
And the usual many fixes to various error paths"
* tag 'net-5.11-rc3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (69 commits)
net: dsa: lantiq_gswip: Exclude RMII from modes that report 1 GbE
s390/qeth: fix L2 header access in qeth_l3_osa_features_check()
s390/qeth: fix locking for discipline setup / removal
s390/qeth: fix deadlock during recovery
selftests: fib_nexthops: Fix wrong mausezahn invocation
nexthop: Bounce NHA_GATEWAY in FDB nexthop groups
nexthop: Unlink nexthop group entry in error path
nexthop: Fix off-by-one error in error path
octeontx2-af: fix memory leak of lmac and lmac->name
chtls: Fix chtls resources release sequence
chtls: Added a check to avoid NULL pointer dereference
chtls: Replace skb_dequeue with skb_peek
chtls: Avoid unnecessary freeing of oreq pointer
chtls: Fix panic when route to peer not configured
chtls: Remove invalid set_tcb call
chtls: Fix hardware tid leak
net: ip: always refragment ip defragmented packets
net: fix pmtu check in nopmtudisc mode
selftests: netfilter: add selftest for ipip pmtu discovery with enabled connection tracking
docs: octeontx2: tune rst markup
...
Pull regulator fixes from Mark Brown:
"A few minor driver specific fixes, mostly DT bindings document bits,
plus a new device ID"
* tag 'regulator-fix-v5.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: qcom-rpmh: add QCOM_COMMAND_DB dependency
regulator: qcom-rpmh-regulator: correct hfsmps515 definition
dt-bindings: regulator: qcom,rpmh-regulator: add pm8009 revision
regulator: bd718x7: Add enable times
regulator: pf8x00: Use specific compatible strings for devices
Pull networking fixes from Jakub Kicinski:
"Networking fixes, including fixes from netfilter, wireless and bpf
trees.
Current release - regressions:
- mt76: fix NULL pointer dereference in mt76u_status_worker and
mt76s_process_tx_queue
- net: ipa: fix interconnect enable bug
Current release - always broken:
- netfilter: fixes possible oops in mtype_resize in ipset
- ath11k: fix number of coding issues found by static analysis tools
and spurious error messages
Previous releases - regressions:
- e1000e: re-enable s0ix power saving flows for systems with the
Intel i219-LM Ethernet controllers to fix power use regression
- virtio_net: fix recursive call to cpus_read_lock() to avoid a
deadlock
- ipv4: ignore ECN bits for fib lookups in fib_compute_spec_dst()
- sysfs: take the rtnl lock around XPS configuration
- xsk: fix memory leak for failed bind and rollback reservation at
NETDEV_TX_BUSY
- r8169: work around power-saving bug on some chip versions
Previous releases - always broken:
- dcb: validate netlink message in DCB handler
- tun: fix return value when the number of iovs exceeds MAX_SKB_FRAGS
to prevent unnecessary retries
- vhost_net: fix ubuf refcount when sendmsg fails
- bpf: save correct stopping point in file seq iteration
- ncsi: use real net-device for response handler
- neighbor: fix div by zero caused by a data race (TOCTOU)
- bareudp: fix use of incorrect min_headroom size and a false
positive lockdep splat from the TX lock
- mvpp2:
- clear force link UP during port init procedure in case
bootloader had set it
- add TCAM entry to drop flow control pause frames
- fix PPPoE with ipv6 packet parsing
- fix GoP Networking Complex Control config of port 3
- fix pkt coalescing IRQ-threshold configuration
- xsk: fix race in SKB mode transmit with shared cq
- ionic: account for vlan tag len in rx buffer len
- stmmac: ignore the second clock input, current clock framework does
not handle exclusive clock use well, other drivers may reconfigure
the second clock
Misc:
- ppp: change PPPIOCUNBRIDGECHAN ioctl request number to follow
existing scheme"
* tag 'net-5.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (99 commits)
net: dsa: lantiq_gswip: Fix GSWIP_MII_CFG(p) register access
net: dsa: lantiq_gswip: Enable GSWIP_MII_CFG_EN also for internal PHYs
net: lapb: Decrease the refcount of "struct lapb_cb" in lapb_device_event
r8169: work around power-saving bug on some chip versions
net: usb: qmi_wwan: add Quectel EM160R-GL
selftests: mlxsw: Set headroom size of correct port
net: macb: Correct usage of MACB_CAPS_CLK_HW_CHG flag
ibmvnic: fix: NULL pointer dereference.
docs: networking: packet_mmap: fix old config reference
docs: networking: packet_mmap: fix formatting for C macros
vhost_net: fix ubuf refcount incorrectly when sendmsg fails
bareudp: Fix use of incorrect min_headroom size
bareudp: set NETIF_F_LLTX flag
net: hdlc_ppp: Fix issues when mod_timer is called while timer is running
atlantic: remove architecture depends
erspan: fix version 1 check in gre_parse_header()
net: hns: fix return value check in __lb_other_process()
net: sched: prevent invalid Scell_log shift count
net: neighbor: fix a crash caused by mod zero
ipv4: Ignore ECN bits for fib lookups in fib_compute_spec_dst()
...
Before commit 889b8f964f ("packet: Kill CONFIG_PACKET_MMAP.") there
used to be a CONFIG_PACKET_MMAP config symbol that depended on
CONFIG_PACKET. The text still implies that PACKET_MMAP can be disabled.
Remove that from the text, as well as reference to old kernel versions.
Also, drop reference to broken link to information for pre 2.6.5
kernels.
Make a slight working improvement (s/In/On/) while at it.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Link: https://lore.kernel.org/r/80089f3783372c8fd7833f28ce774a171b2ef252.1609232919.git.baruch@tkos.co.il
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Pull documentation fixes from Jonathan Corbet:
"A small set of late-arriving, small documentation fixes"
* tag 'docs-5.11-2' of git://git.lwn.net/linux:
docs: admin-guide: Fix default value of max_map_count in sysctl/vm.rst
Documentation/submitting-patches: Document the SoB chain
Documentation: process: Correct numbering
docs: submitting-patches: Trivial - fix grammatical error
Pull ext4 updates from Ted Ts'o:
"Various bug fixes and cleanups for ext4; no new features this cycle"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (29 commits)
ext4: remove unnecessary wbc parameter from ext4_bio_write_page
ext4: avoid s_mb_prefetch to be zero in individual scenarios
ext4: defer saving error info from atomic context
ext4: simplify ext4 error translation
ext4: move functions in super.c
ext4: make ext4_abort() use __ext4_error()
ext4: standardize error message in ext4_protect_reserved_inode()
ext4: remove redundant sb checksum recomputation
ext4: don't remount read-only with errors=continue on reboot
ext4: fix deadlock with fs freezing and EA inodes
jbd2: add a helper to find out number of fast commit blocks
ext4: make fast_commit.h byte identical with e2fsprogs/fast_commit.h
ext4: fix fall-through warnings for Clang
ext4: add docs about fast commit idempotence
ext4: remove the unused EXT4_CURRENT_REV macro
ext4: fix an IS_ERR() vs NULL check
ext4: check for invalid block size early when mounting a file system
ext4: fix a memory leak of ext4_free_data
ext4: delete nonsensical (commented-out) code inside ext4_xattr_block_set()
ext4: update ext4_data_block_valid related comments
...
Pull watchdog updates from Wim Van Sebroeck:
- Removal of the pnx83xx driver
- Add a binding for A100's watchdog controller
- Add Rockchip compatibles to snps,dw-wdt.yaml
- hpwdt: Disable NMI in Crash Kernel
- Fix potential dereferencing of null pointer in watchdog_core
- Several other small fixes and improvements
* tag 'linux-watchdog-5.11-rc1' of git://www.linux-watchdog.org/linux-watchdog: (23 commits)
watchdog: convert comma to semicolon
watchdog: iTCO_wdt: use dev_*() instead of pr_*() for logging
dt-binding: watchdog: add Rockchip compatibles to snps,dw-wdt.yaml
watchdog: coh901327: add COMMON_CLK dependency
dt-bindings: watchdog: sun4i: Add A100 compatible
watchdog: qcom: Avoid context switch in restart handler
watchdog: iTCO_wdt: use module_platform_device() macro
watchdog: Fix potential dereferencing of null pointer
watchdog: wdat_wdt: Fix missing kerneldoc reported by W=1
watchdog/hpwdt: Reflect changes
watchdog/hpwdt: Disable NMI in Crash Kernel
wdt: sp805: add watchdog_stop on reboot
watchdog: sbc_fitpc2_wdt: add __user annotations
watchdog: geodewdt: remove unneeded break
watchdog: rti-wdt: fix reference leak in rti_wdt_probe
watchdog: qcom_wdt: set WDOG_HW_RUNNING bit when appropriate
watchdog: remove pnx83xx driver
watchdog: stm32_iwdg: don't print an error on probe deferral
watchdog: sprd: change to use usleep_range() instead of busy loop
watchdog: sprd: check busy bit before new loading rather than after that
...
Pull more power management updates from Rafael Wysocki:
"These update the CPPC cpufreq driver and intel_pstate (which involves
updating the cpufreq core and the schedutil governor) and make
janitorial changes in the ACPI code handling processor objects.
Specifics:
- Rework the passive-mode "fast switch" path in the intel_pstate
driver to allow it receive the minimum (required) and target
(desired) performance information from the schedutil governor so as
to avoid running some workloads too fast (Rafael Wysocki).
- Make the intel_pstate driver allow the policy max limit to be
increased after the guaranteed performance value for the given CPU
has increased (Rafael Wysocki).
- Clean up the handling of CPU coordination types in the CPPC cpufreq
driver and make it export frequency domains information to user
space via sysfs (Ionela Voinescu).
- Fix the ACPI code handling processor objects to use a correct
coordination type when it fails to map frequency domains and drop a
redundant CPU map initialization from it (Ionela Voinescu, Punit
Agrawal)"
* tag 'pm-5.11-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: intel_pstate: Use most recent guaranteed performance values
cpufreq: intel_pstate: Implement the ->adjust_perf() callback
cpufreq: Add special-purpose fast-switching callback for drivers
cpufreq: schedutil: Add util to struct sg_cpu
cppc_cpufreq: replace per-cpu data array with a list
cppc_cpufreq: expose information on frequency domains
cppc_cpufreq: clarify support for coordination types
cppc_cpufreq: use policy->cpu as driver of frequency setting
ACPI: processor: fix NONE coordination for domain mapping failure
Pull Kconfig updates from Masahiro Yamada:
- Support only Qt5 for qconf
- Validate signal/slot connection at compile time of qconf
- Sanitize header includes
* tag 'kconfig-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kconfig: doc: fix $(fileno) to $(filename)
kconfig: fix return value of do_error_if()
kconfig: clean up header inclusion
kconfig: qconf: show Qt version in the About dialog
kconfig: make lkc.h self-sufficient #include-wise
kconfig: qconf: convert to Qt5 new signal/slot connection syntax
kconfig: qconf: use a variable to pass packages to pkg-config
kconfig: qconf: drop Qt4 support
Pull Kbuild updates from Masahiro Yamada:
- Use /usr/bin/env for shebang lines in scripts
- Remove useless -Wnested-externs warning flag
- Update documents
- Refactor log handling in modpost
- Stop building modules without MODULE_LICENSE() tag
- Make the insane combination of 'static' and EXPORT_SYMBOL an error
- Improve genksyms to handle _Static_assert()
* tag 'kbuild-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
Documentation/kbuild: Document platform dependency practises
Documentation/kbuild: Document COMPILE_TEST dependencies
genksyms: Ignore module scoped _Static_assert()
modpost: turn static exports into error
modpost: turn section mismatches to error from fatal()
modpost: change license incompatibility to error() from fatal()
modpost: turn missing MODULE_LICENSE() into error
modpost: refactor error handling and clarify error/fatal difference
modpost: rename merror() to error()
kbuild: don't hardcode depmod path
kbuild: doc: document subdir-y syntax
kbuild: doc: clarify the difference between extra-y and always-y
kbuild: doc: split if_changed explanation to a separate section
kbuild: doc: merge 'Special Rules' and 'Custom kbuild commands' sections
kbuild: doc: fix 'List directories to visit when descending' section
kbuild: doc: replace arch/$(ARCH)/ with arch/$(SRCARCH)/
kbuild: doc: update the description about kbuild Makefiles
Makefile.extrawarn: remove -Wnested-externs warning
tweewide: Fix most Shebang lines
Merge KASAN updates from Andrew Morton.
This adds a new hardware tag-based mode to KASAN. The new mode is
similar to the existing software tag-based KASAN, but relies on arm64
Memory Tagging Extension (MTE) to perform memory and pointer tagging
(instead of shadow memory and compiler instrumentation).
By Andrey Konovalov and Vincenzo Frascino.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (60 commits)
kasan: update documentation
kasan, mm: allow cache merging with no metadata
kasan: sanitize objects when metadata doesn't fit
kasan: clarify comment in __kasan_kfree_large
kasan: simplify assign_tag and set_tag calls
kasan: don't round_up too much
kasan, mm: rename kasan_poison_kfree
kasan, mm: check kasan_enabled in annotations
kasan: add and integrate kasan boot parameters
kasan: inline (un)poison_range and check_invalid_free
kasan: open-code kasan_unpoison_slab
kasan: inline random_tag for HW_TAGS
kasan: inline kasan_reset_tag for tag-based modes
kasan: remove __kasan_unpoison_stack
kasan: allow VMAP_STACK for HW_TAGS mode
kasan, arm64: unpoison stack only with CONFIG_KASAN_STACK
kasan: introduce set_alloc_info
kasan: rename get_alloc/free_info
kasan: simplify quarantine_put call site
kselftest/arm64: check GCR_EL1 after context switch
...
Pull ARM updates from Russell King:
- Rework phys/virt translation
- Add KASan support
- Move DT out of linear map region
- Use more PC-relative addressing in assembly
- Remove FP emulation handling while in kernel mode
- Link with '-z norelro'
- remove old check for GCC <= 4.2 in ARM unwinder code
- disable big endian if using clang's linker
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: (46 commits)
ARM: 9027/1: head.S: explicitly map DT even if it lives in the first physical section
ARM: 9038/1: Link with '-z norelro'
ARM: 9037/1: uncompress: Add OF_DT_MAGIC macro
ARM: 9036/1: uncompress: Fix dbgadtb size parameter name
ARM: 9035/1: uncompress: Add be32tocpu macro
ARM: 9033/1: arm/smp: Drop the macro S(x,s)
ARM: 9032/1: arm/mm: Convert PUD level pgtable helper macros into functions
ARM: 9031/1: hyp-stub: remove unused .L__boot_cpu_mode_offset symbol
ARM: 9044/1: vfp: use undef hook for VFP support detection
ARM: 9034/1: __div64_32(): straighten up inline asm constraints
ARM: 9030/1: entry: omit FP emulation for UND exceptions taken in kernel mode
ARM: 9029/1: Make iwmmxt.S support Clang's integrated assembler
ARM: 9028/1: disable KASAN in call stack capturing routines
ARM: 9026/1: unwind: remove old check for GCC <= 4.2
ARM: 9025/1: Kconfig: CPU_BIG_ENDIAN depends on !LD_IS_LLD
ARM: 9024/1: Drop useless cast of "u64" to "long long"
ARM: 9023/1: Spelling s/mmeory/memory/
ARM: 9022/1: Change arch/arm/lib/mem*.S to use WEAK instead of .weak
ARM: kvm: replace open coded VA->PA calculations with adr_l call
ARM: head.S: use PC relative insn sequence to calculate PHYS_OFFSET
...
Pull device mapper updates from Mike Snitzer:
- Add DM verity support for signature verification with 2nd keyring
- Fix DM verity to skip verity work if IO completes with error while
system is shutting down
- Add new DM multipath "IO affinity" path selector that maps IO
destined to a given path to a specific CPU based on user provided
mapping
- Rename DM multipath path selector source files to have "dm-ps" prefix
- Add REQ_NOWAIT support to some other simple DM targets that don't
block in more elaborate ways waiting for IO
- Export DM crypt's kcryptd workqueue via sysfs (WQ_SYSFS)
- Fix error return code in DM's target_message() if empty message is
received
- A handful of other small cleanups
* tag 'for-5.11/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm cache: simplify the return expression of load_mapping()
dm ebs: avoid double unlikely() notation when using IS_ERR()
dm verity: skip verity work if I/O error when system is shutting down
dm crypt: export sysfs of kcryptd workqueue
dm ioctl: fix error return code in target_message
dm crypt: Constify static crypt_iv_operations
dm: add support for REQ_NOWAIT to various targets
dm: rename multipath path selector source files to have "dm-ps" prefix
dm mpath: add IO affinity path selector
dm verity: Add support for signature verification with 2nd keyring
dm: remove unnecessary current->bio_list check when submitting split bio
* pm-cpufreq:
cpufreq: intel_pstate: Use most recent guaranteed performance values
cpufreq: intel_pstate: Implement the ->adjust_perf() callback
cpufreq: Add special-purpose fast-switching callback for drivers
cpufreq: schedutil: Add util to struct sg_cpu
cppc_cpufreq: replace per-cpu data array with a list
cppc_cpufreq: expose information on frequency domains
cppc_cpufreq: clarify support for coordination types
cppc_cpufreq: use policy->cpu as driver of frequency setting
ACPI: processor: fix NONE coordination for domain mapping failure
ACPI: processor: Drop duplicate setting of shared_cpu_map
Pull clk updates from Stephen Boyd:
"The core framework got some nice improvements this time around. We
gained the ability to get struct clk pointers from a struct clk_hw so
that clk providers can consume the clks they provide, if they need to
do something like that. This has been a long missing part of the clk
provider API that will help us move away from exposing a struct clk
pointer in the struct clk_hw. Tracepoints are added for the
clk_set_rate() "range" functions, similar to the tracepoints we
already have for clk_set_rate() and we added a column to debugfs to
help developers understand the hardware enable state of clks in case
firmware or bootloader state is different than what is expected.
Overall the core changes are mostly improving the clk driver writing
experience.
At the driver level, we have the usual collection of driver updates
and new drivers for new SoCs. This time around the Qualcomm folks
introduced a good handful of clk drivers for various parts of three or
four SoCs. The SiFive folks added a new clk driver for their FU740
SoCs, coming in second on the diffstat and then Atmel AT91 and Amlogic
SoCs had lots of work done after that for various new features. One
last thing to note in the driver area is that the i.MX driver has
gained a new binding to support SCU clks after being on the list for
many months. It uses a two cell binding which is sort of rare in clk
DT bindings. Beyond that we have the usual set of driver fixes and
tweaks that come from more testing and finding out that some
configuration was wrong or that a driver could support being built as
a module.
Summary:
Core:
- Add some trace points for clk_set_rate() "range" functions
- Add hardware enable information to clk_summary debugfs
- Replace clk-provider.h with of_clk.h when possible
- Add devm variant of clk_notifier_register()
- Add clk_hw_get_clk() to generate a struct clk from a struct clk_hw
New Drivers:
- Bindings for Canaan K210 SoC clks
- Support for SiFive FU740 PRCI
- Camera clks on Qualcomm SC7180 SoCs
- GCC and RPMh clks on Qualcomm SDX55 SoCs
- RPMh clks on Qualcomm SM8350 SoCs
- LPASS clks on Qualcomm SM8250 SoCs
Updates:
- DVFS support for AT91 clk driver
- Update git repo branch for Renesas clock drivers
- Add camera (CSI) and video-in (VIN) clocks on Renesas R-Car V3U
- Add RPC (QSPI/HyperFLASH) clocks on Renesas RZ/G2M, RZ/G2N, and RZ/G2E
- Stop using __raw_*() I/O accessors in Renesas clk drivers
- One more conversion of DT bindings to json-schema
- Make i.MX clk-gate2 driver more flexible
- New two cell binding for i.MX SCU clks
- Drop of_match_ptr() in i.MX8 clk drivers
- Add arch dependencies for Rockchip clk drivers
- Fix i2s on Rockchip rk3066
- Add MIPI DSI clks on Amlogic axg and g12 SoCs
- Support modular builds of Amlogic clk drivers
- Fix an Amlogic Video PLL clock dependency
- Samsung Kconfig dependencies updates for better compile test coverage
- Refactoring of the Samsung PLL clocks driver
- Small Tegra driver cleanups
- Minor fixes to Ingenic and VC5 clk drivers
- Cleanup patches to remove unused variables and plug memory leaks"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (134 commits)
dt-binding: clock: Document canaan,k210-clk bindings
dt-bindings: Add Canaan vendor prefix
clk: vc5: Use "idt,voltage-microvolt" instead of "idt,voltage-microvolts"
clk: ingenic: Fix divider calculation with div tables
clk: sunxi-ng: Make sure divider tables have sentinel
clk: s2mps11: Fix a resource leak in error handling paths in the probe function
clk: mvebu: a3700: fix the XTAL MODE pin to MPP1_9
clk: si5351: Wait for bit clear after PLL reset
clk: at91: sam9x60: remove atmel,osc-bypass support
clk: at91: sama7g5: register cpu clock
clk: at91: clk-master: re-factor master clock
clk: at91: sama7g5: do not allow cpu pll to go higher than 1GHz
clk: at91: sama7g5: decrease lower limit for MCK0 rate
clk: at91: sama7g5: remove mck0 from parent list of other clocks
clk: at91: clk-sam9x60-pll: allow runtime changes for pll
clk: at91: sama7g5: add 5th divisor for mck0 layout and characteristics
clk: at91: clk-master: add 5th divisor for mck master
clk: at91: sama7g5: allow SYS and CPU PLLs to be exported and referenced in DT
dt-bindings: clock: at91: add sama7g5 pll defines
clk: at91: sama7g5: fix compilation error
...
Since the default value of sysctl_max_map_count is defined as
DEFAULT_MAX_MAP_COUNT from mm/util.c
int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT;
DEFAULT_MAX_MAP_COUNT is defined as 65530 (65535-5) in include/linux/mm.h
#define MAPCOUNT_ELF_CORE_MARGIN (5)
#define DEFAULT_MAX_MAP_COUNT (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN)
Signed-off-by: Fengfei Xi <xi.fengfei@h3c.com>
Link: https://lore.kernel.org/r/20201210082134.36957-1-xi.fengfei@h3c.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Document best practises for using architecture and platform dependencies.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
The difference between extra-y and always-y is obscure.
Basically, Kbuild builds targets listed in extra-y and always-y in
visited Makefiles without relying on any dependency.
The difference is that extra-y is used to list the targets needed for
vmlinux whereas always-y is used to list the targets that must be always
built irrespective of final targets.
Kbuild skips extra-y when it is building only modules (i.e.
'make modules'). This is the long-standing behavior since extra-y was
introduced in 2003, and it is explained in that commit log [1].
For clarification, this is the extra-y vs always-y table:
extra-y always-y
'make' y y
'make vmlinux' y y
'make modules' n y
Kbuild skips extra-y also when building external modules since obviously
it never builds vmlinux.
Unfortunately, extra-y is wrongly used in many places of upstream code,
and even in external modules.
Using extra-y in external module Makefiles is wrong. What you should
use is probably always-y or 'targets'.
The current documentation for extra-y is misleading. I rewrote it, and
moved it to the section 3.7.
always-y is not documented anywhere. I added.
[1]: https://git.kernel.org/pub/scm/linux/kernel/git/history/history.git/commit/?id=f94e5fd7e5d09a56a60670a9bb211a791654bba8
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
The if_changed macro is currently explained in the section
"Commands useful for building a boot image", but the use of
if_changed is not limited to the boot image.
It is often used together with custom rules. Let's split it as a
separate section, and insert it after the "Custom Rules" section.
I slightly reworded the explanation, re-numbered to fill the <deleted>
section, and also fixed the broken indentation of the Note: part.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
The two sections "3.10 Special Rules" and "7.8 Custom kbuild commands"
are related because you must understand both of them when you write
custom rules.
Actually I do not understand the policy about what to go into
"3 The kbuild files" and what into "7 Architecture Makefile".
This commit reworks the custom rule explanation as follows:
- Merged "7.8 Custom kbuild commands" into "3.10 Special Rules".
- Reword "Special Rules" to "Custom Rules" for consistency.
- Update the example for kecho because the blackfin Makefile
does not exist any more.
- Replace the example for cmd_<command> with a simpler one.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Fix stale information:
- Fix the section number in the reference from 6.4 to 7.4.
- Remove init-y and net-y. They were removed by commit 23febe375d
("kbuild: merge init-y into core-y") and commit 95fb6317b3
("kbuild: merge net-y and virt-y into drivers-y"), respectively.
- Update the example because arch/sparc64/Makefile does not exit.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Precisely speaking, the arch directory is specified by $(SRCARCH),
not $(ARCH).
In old days, $(ARCH) actually matched to the arch directory because
32-bit and 64-bit were supported as separate architectures.
Most architectures (except arm/arm64) were unified like follows:
arch/i386, arch/x86_64 -> arch/x86
arch/sh, arch/sh64 -> arch/sh
arch/sparc, arch/sparc64 -> arch/sparc
To not break the user interface, commit 6752ed90da ("Kbuild: allow
arch/xxx to use a different source path") introduced SRCARCH to point
to the arch directory, still allowing to pass in the former ARCH=i386
or ARCH=x86_64.
Update the documents for preciseness, and add the explanation of SRCARCH.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
This line was written in 2003. Now we have much more Makefiles.
The number of Makefiles is not important. The point is we have a
Makefile in (almost) every directory.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
- Bindings for Canaan K210 SoC clks
* clk-ingenic:
clk: ingenic: Fix divider calculation with div tables
* clk-vc5:
clk: vc5: Use "idt,voltage-microvolt" instead of "idt,voltage-microvolts"
* clk-cleanup:
clk: sunxi-ng: Make sure divider tables have sentinel
clk: s2mps11: Fix a resource leak in error handling paths in the probe function
clk: bcm: dvp: Add MODULE_DEVICE_TABLE()
clk: bcm: dvp: drop a variable that is assigned to only
* clk-canaan:
dt-binding: clock: Document canaan,k210-clk bindings
dt-bindings: Add Canaan vendor prefix
* clk-marvell:
clk: mvebu: a3700: fix the XTAL MODE pin to MPP1_9
- Add some trace points for clk_set_rate() "range" functions
- DVFS support for AT91 clk driver
* clk-ti:
clk: ti: omap5: Fix reboot DPLL lock failure when using ABE TIMERs
clk: ti: Fix memleak in ti_fapll_synth_setup
* clk-analog:
clk: axi-clkgen: move the OF table at the bottom of the file
clk: axi-clkgen: wrap limits in a struct and keep copy on the state object
dt-bindings: clock: adi,axi-clkgen: convert old binding to yaml format
* clk-trace:
clk: Trace clk_set_rate() "range" functions
* clk-at91:
clk: at91: sam9x60: remove atmel,osc-bypass support
clk: at91: sama7g5: register cpu clock
clk: at91: clk-master: re-factor master clock
clk: at91: sama7g5: do not allow cpu pll to go higher than 1GHz
clk: at91: sama7g5: decrease lower limit for MCK0 rate
clk: at91: sama7g5: remove mck0 from parent list of other clocks
clk: at91: clk-sam9x60-pll: allow runtime changes for pll
clk: at91: sama7g5: add 5th divisor for mck0 layout and characteristics
clk: at91: clk-master: add 5th divisor for mck master
clk: at91: sama7g5: allow SYS and CPU PLLs to be exported and referenced in DT
dt-bindings: clock: at91: add sama7g5 pll defines
clk: at91: sama7g5: fix compilation error
* clk-silabs:
clk: si5351: Wait for bit clear after PLL reset
- Support for SiFive FU740 PRCI
- Add hardware enable information to clk_summary debugfs
* clk-tegra:
clk: tegra: Fix duplicated SE clock entry
clk: tegra: bpmp: Clamp clock rates on requests
clk: tegra: Do not return 0 on failure
* clk-imx: (24 commits)
clk: imx: scu: remove the calling of device_is_bound
clk: imx: scu: Make pd_np with static keyword
clk: imx8mq: drop of_match_ptr from of_device_id table
clk: imx8mp: drop of_match_ptr from of_device_id table
clk: imx8mn: drop of_match_ptr from of_device_id table
clk: imx8mm: drop of_match_ptr from of_device_id table
clk: imx: gate2: Remove unused variable ret
clk: imx: gate2: Add locking in is_enabled op
clk: imx: gate2: Add cgr_mask for more flexible number of control bits
clk: imx: gate2: Check if clock is enabled against cgr_val
clk: imx: gate2: Keep the register writing in on place
clk: imx: gate2: Remove the IMX_CLK_GATE2_SINGLE_BIT special case
clk: imx: scu: fix build break when compiled as modules
clk: imx: remove redundant assignment to pointer np
clk: imx: remove unneeded semicolon
clk: imx: lpcg: add suspend/resume support
clk: imx: clk-imx8qxp-lpcg: add runtime pm support
clk: imx: lpcg: allow lpcg clk to take device pointer
clk: imx: imx8qxp-lpcg: add parsing clocks from device tree
clk: imx: scu: add suspend/resume support
...
* clk-sifive:
clk: sifive: Add clock enable and disable ops
clk: sifive: Fix the wrong bit field shift
clk: sifive: Add a driver for the SiFive FU740 PRCI IP block
clk: sifive: Use common name for prci configuration
clk: sifive: Extract prci core to common base
dt-bindings: fu740: prci: add YAML documentation for the FU740 PRCI
* clk-mediatek:
clk: mediatek: Make mtk_clk_register_mux() a static function
* clk-summary:
clk: Add hardware-enable column to clk summary
Pull perf tools updates from Arnaldo Carvalho de Melo:
"perf record:
- Fix memory leak when using '--user-regs=?' to list registers
aarch64 support:
- Add aarch64 registers to 'perf record's' --user-regs command line
option
aarch64 hw tracing support:
- Decode memory tagging properties
- Improve ARM's auxtrace support
- Add support for ARMv8.3-SPE
perf kvm:
- Add kvm-stat for arm64
perf stat:
- Add --quiet option
Cleanups:
- Fixup function names wrt what is in libperf and what is in
tools/perf
Build:
- Allow building without libbpf in older systems
New kernel features:
- Initial support for data/code page size sample type, more to come
perf annotate:
- Support MIPS instruction extended support
perf stack unwinding:
- Fix separate debug info files when using elfutils' libdw's unwinder
perf vendor events:
- Update Intel's Skylake client events to v50
- Add JSON metrics for ARM's imx8mm DDR Perf
- Support printing metric groups for system PMUs
perf build id:
- Prep work for supporting having the build id provided by the kernel
in PERF_RECORD_MMAP2 metadata events
perf stat:
- Support regex pattern in --for-each-cgroup
pipe mode:
- Allow to use stdio functions for pipe mode
- Support 'perf report's' --header-only for pipe mode
- Support pipe mode display in 'perf evlist'
Documentation:
- Update information about CAP_PERFMON"
* tag 'perf-tools-2020-12-19' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (134 commits)
perf mem: Factor out a function to generate sort order
perf sort: Add sort option for data page size
perf script: Support data page size
tools headers UAPI: Update asm-generic/unistd.h
tools headers cpufeatures: Sync with the kernel sources
tools headers UAPI: Sync linux/prctl.h with the kernel sources
tools headers UAPI: Sync linux/fscrypt.h with the kernel sources
tools headers UAPI: Sync linux/const.h with the kernel headers
tools arch x86: Sync the msr-index.h copy with the kernel sources
perf trace beauty: Update copy of linux/socket.h with the kernel sources
tools headers: Update linux/ctype.h with the kernel sources
tools headers: Add conditional __has_builtin()
tools headers: Get tools's linux/compiler.h closer to the kernel's
tools headers UAPI: Sync linux/stat.h with the kernel sources
tools headers: Syncronize linux/build_bug.h with the kernel sources
perf tools: Reformat record's control fd man text
perf config: Fix example command in manpage to conform to syntax specified in the SYNOPSIS section.
perf test: Make sample-parsing test aware of PERF_SAMPLE_{CODE,DATA}_PAGE_SIZE
perf tools: Add support to read build id from compressed elf
perf debug: Add debug_set_file function
...
