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* Merge tag 'devicetree-for-5.12' of ↵Linus Torvalds2021-02-221-1/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: - Sync dtc to upstream version v1.6.0-51-g183df9e9c2b9 and build host fdtoverlay - Add kbuild support to build DT overlays (%.dtbo) - Drop NULLifying match table in of_match_device(). In preparation for this, there are several driver cleanups to use (of_)?device_get_match_data(). - Drop pointless wrappers from DT struct device API - Convert USB binding schemas to use graph schema and remove old plain text graph binding doc - Convert spi-nor and v3d GPU bindings to DT schema - Tree wide schema fixes for if/then schemas, array size constraints, and undocumented compatible strings in examples - Handle 'no-map' correctly for already reserved memblock regions * tag 'devicetree-for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (35 commits) driver core: platform: Drop of_device_node_put() wrapper of: Remove of_dev_{get,put}() dt-bindings: usb: Change descibe to describe in usbmisc-imx.txt dt-bindings: can: rcar_canfd: Group tuples in pin control properties dt-bindings: power: renesas,apmu: Group tuples in cpus properties dt-bindings: mtd: spi-nor: Convert to DT schema format dt-bindings: Use portable sort for version cmp dt-bindings: ethernet-controller: fix fixed-link specification dt-bindings: irqchip: Add node name to PRUSS INTC dt-bindings: interconnect: Fix the expected number of cells dt-bindings: Fix errors in 'if' schemas dt-bindings: iommu: renesas,ipmmu-vmsa: Make 'power-domains' conditionally required dt-bindings: Fix undocumented compatible strings in examples kbuild: Add support to build overlays (%.dtbo) scripts: dtc: Remove the unused fdtdump.c file scripts: dtc: Build fdtoverlay tool scripts/dtc: Update to upstream version v1.6.0-51-g183df9e9c2b9 scripts: dtc: Fetch fdtoverlay.c from external DTC project dt-bindings: thermal: sun8i: Fix misplaced schema keyword in compatible strings dt-bindings: iio: dac: Fix AD5686 references ...
| * kbuild: Add support to build overlays (%.dtbo)Viresh Kumar2021-02-041-1/+4
| | | | | | | | | | | | | | | | | | | | | | Add support for building DT overlays (%.dtbo). The overlay's source file will have the usual extension, i.e. .dts, though the blob will have .dtbo extension to distinguish it from normal blobs. Acked-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/434ba2467dd0cd011565625aeb3450650afe0aae.1611904394.git.viresh.kumar@linaro.org
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextLinus Torvalds2021-02-211-2/+14
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking updates from David Miller: "Here is what we have this merge window: 1) Support SW steering for mlx5 Connect-X6Dx, from Yevgeny Kliteynik. 2) Add RSS multi group support to octeontx2-pf driver, from Geetha Sowjanya. 3) Add support for KS8851 PHY. From Marek Vasut. 4) Add support for GarfieldPeak bluetooth controller from Kiran K. 5) Add support for half-duplex tcan4x5x can controllers. 6) Add batch skb rx processing to bcrm63xx_enet, from Sieng Piaw Liew. 7) Rework RX port offload infrastructure, particularly wrt, UDP tunneling, from Jakub Kicinski. 8) Add BCM72116 PHY support, from Florian Fainelli. 9) Remove Dsa specific notifiers, they are unnecessary. From Vladimir Oltean. 10) Add support for picosecond rx delay in dwmac-meson8b chips. From Martin Blumenstingl. 11) Support TSO on xfrm interfaces from Eyal Birger. 12) Add support for MP_PRIO to mptcp stack, from Geliang Tang. 13) Support BCM4908 integrated switch, from Rafał Miłecki. 14) Support for directly accessing kernel module variables via module BTF info, from Andrii Naryiko. 15) Add DASH (esktop and mobile Architecture for System Hardware) support to r8169 driver, from Heiner Kallweit. 16) Add rx vlan filtering to dpaa2-eth, from Ionut-robert Aron. 17) Add support for 100 base0x SFP devices, from Bjarni Jonasson. 18) Support link aggregation in DSA, from Tobias Waldekranz. 19) Support for bitwidse atomics in bpf, from Brendan Jackman. 20) SmartEEE support in at803x driver, from Russell King. 21) Add support for flow based tunneling to GTP, from Pravin B Shelar. 22) Allow arbitrary number of interconnrcts in ipa, from Alex Elder. 23) TLS RX offload for bonding, from Tariq Toukan. 24) RX decap offklload support in mac80211, from Felix Fietkou. 25) devlink health saupport in octeontx2-af, from George Cherian. 26) Add TTL attr to SCM_TIMESTAMP_OPT_STATS, from Yousuk Seung 27) Delegated actionss support in mptcp, from Paolo Abeni. 28) Support receive timestamping when doin zerocopy tcp receive. From Arjun Ray. 29) HTB offload support for mlx5, from Maxim Mikityanskiy. 30) UDP GRO forwarding, from Maxim Mikityanskiy. 31) TAPRIO offloading in dsa hellcreek driver, from Kurt Kanzenbach. 32) Weighted random twos choice algorithm for ipvs, from Darby Payne. 33) Fix netdev registration deadlock, from Johannes Berg. 34) Various conversions to new tasklet api, from EmilRenner Berthing. 35) Bulk skb allocations in veth, from Lorenzo Bianconi. 36) New ethtool interface for lane setting, from Danielle Ratson. 37) Offload failiure notifications for routes, from Amit Cohen. 38) BCM4908 support, from Rafał Miłecki. 39) Support several new iwlwifi chips, from Ihab Zhaika. 40) Flow drector support for ipv6 in i40e, from Przemyslaw Patynowski. 41) Support for mhi prrotocols, from Loic Poulain. 42) Optimize bpf program stats. 43) Implement RFC6056, for better port randomization, from Eric Dumazet. 44) hsr tag offloading support from George McCollister. 45) Netpoll support in qede, from Bhaskar Upadhaya. 46) 2005/400g speed support in bonding 3ad mode, from Nikolay Aleksandrov. 47) Netlink event support in mptcp, from Florian Westphal. 48) Better skbuff caching, from Alexander Lobakin. 49) MRP (Media Redundancy Protocol) offloading in DSA and a few drivers, from Horatiu Vultur. 50) mqprio saupport in mvneta, from Maxime Chevallier. 51) Remove of_phy_attach, no longer needed, from Florian Fainelli" * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1766 commits) octeontx2-pf: Fix otx2_get_fecparam() cteontx2-pf: cn10k: Prevent harmless double shift bugs net: stmmac: Add PCI bus info to ethtool driver query output ptp: ptp_clockmatrix: clean-up - parenthesis around a == b are unnecessary ptp: ptp_clockmatrix: Simplify code - remove unnecessary `err` variable. ptp: ptp_clockmatrix: Coding style - tighten vertical spacing. ptp: ptp_clockmatrix: Clean-up dev_*() messages. ptp: ptp_clockmatrix: Remove unused header declarations. ptp: ptp_clockmatrix: Add alignment of 1 PPS to idtcm_perout_enable. ptp: ptp_clockmatrix: Add wait_for_sys_apll_dpll_lock. net: stmmac: dwmac-sun8i: Add a shutdown callback net: stmmac: dwmac-sun8i: Minor probe function cleanup net: stmmac: dwmac-sun8i: Use reset_control_reset net: stmmac: dwmac-sun8i: Remove unnecessary PHY power check net: stmmac: dwmac-sun8i: Return void from PHY unpower r8169: use macro pm_ptr net: mdio: Remove of_phy_attach() net: mscc: ocelot: select PACKING in the Kconfig net: re-solve some conflicts after net -> net-next merge net: dsa: tag_rtl4_a: Support also egress tags ...
| * \ Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller2021-02-161-1/+12
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Daniel Borkmann says: ==================== pull-request: bpf-next 2021-02-16 The following pull-request contains BPF updates for your *net-next* tree. There's a small merge conflict between 7eeba1706eba ("tcp: Add receive timestamp support for receive zerocopy.") from net-next tree and 9cacf81f8161 ("bpf: Remove extra lock_sock for TCP_ZEROCOPY_RECEIVE") from bpf-next tree. Resolve as follows: [...] lock_sock(sk); err = tcp_zerocopy_receive(sk, &zc, &tss); err = BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sk, level, optname, &zc, &len, err); release_sock(sk); [...] We've added 116 non-merge commits during the last 27 day(s) which contain a total of 156 files changed, 5662 insertions(+), 1489 deletions(-). The main changes are: 1) Adds support of pointers to types with known size among global function args to overcome the limit on max # of allowed args, from Dmitrii Banshchikov. 2) Add bpf_iter for task_vma which can be used to generate information similar to /proc/pid/maps, from Song Liu. 3) Enable bpf_{g,s}etsockopt() from all sock_addr related program hooks. Allow rewriting bind user ports from BPF side below the ip_unprivileged_port_start range, both from Stanislav Fomichev. 4) Prevent recursion on fentry/fexit & sleepable programs and allow map-in-map as well as per-cpu maps for the latter, from Alexei Starovoitov. 5) Add selftest script to run BPF CI locally. Also enable BPF ringbuffer for sleepable programs, both from KP Singh. 6) Extend verifier to enable variable offset read/write access to the BPF program stack, from Andrei Matei. 7) Improve tc & XDP MTU handling and add a new bpf_check_mtu() helper to query device MTU from programs, from Jesper Dangaard Brouer. 8) Allow bpf_get_socket_cookie() helper also be called from [sleepable] BPF tracing programs, from Florent Revest. 9) Extend x86 JIT to pad JMPs with NOPs for helping image to converge when otherwise too many passes are required, from Gary Lin. 10) Verifier fixes on atomics with BPF_FETCH as well as function-by-function verification both related to zero-extension handling, from Ilya Leoshkevich. 11) Better kernel build integration of resolve_btfids tool, from Jiri Olsa. 12) Batch of AF_XDP selftest cleanups and small performance improvement for libbpf's xsk map redirect for newer kernels, from Björn Töpel. 13) Follow-up BPF doc and verifier improvements around atomics with BPF_FETCH, from Brendan Jackman. 14) Permit zero-sized data sections e.g. if ELF .rodata section contains read-only data from local variables, from Yonghong Song. 15) veth driver skb bulk-allocation for ndo_xdp_xmit, from Lorenzo Bianconi. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | kbuild: Do not clean resolve_btfids if the output does not existJiri Olsa2021-02-111-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Nathan reported issue with cleaning empty build directory: $ make -s O=build distclean ../../scripts/Makefile.include:4: *** \ O=/ho...build/tools/bpf/resolve_btfids does not exist. Stop. The problem that tools scripts require existing output directory, otherwise it fails. Adding check around the resolve_btfids clean target to ensure the output directory is in place. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/bpf/20210211124004.1144344-1-jolsa@kernel.org
| | * | kbuild: Add resolve_btfids clean to root clean targetJiri Olsa2021-02-091-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The resolve_btfids tool is used during the kernel build, so we should clean it on kernel's make clean. Invoking the the resolve_btfids clean as part of root 'make clean'. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Link: https://lore.kernel.org/bpf/20210205124020.683286-5-jolsa@kernel.org
| * | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller2021-02-101-10/+5
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| * \ \ \ Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski2021-02-021-1/+1
| |\ \ \ \ | | | | | | | | | | | | | | | | | | Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| * \ \ \ \ Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski2021-01-291-1/+1
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/net/can/dev.c b552766c872f ("can: dev: prevent potential information leak in can_fill_info()") 3e77f70e7345 ("can: dev: move driver related infrastructure into separate subdir") 0a042c6ec991 ("can: dev: move netlink related code into seperate file") Code move. drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c 57ac4a31c483 ("net/mlx5e: Correctly handle changing the number of queues when the interface is down") 214baf22870c ("net/mlx5e: Support HTB offload") Adjacent code changes net/switchdev/switchdev.c 20776b465c0c ("net: switchdev: don't set port_obj_info->handled true when -EOPNOTSUPP") ffb68fc58e96 ("net: switchdev: remove the transaction structure from port object notifiers") bae33f2b5afe ("net: switchdev: remove the transaction structure from port attributes") Transaction parameter gets dropped otherwise keep the fix. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| * | | | | | net: move CONFIG_NET guard to top MakefileMasahiro Yamada2021-01-281-1/+2
| | |_|_|/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When CONFIG_NET is disabled, nothing under the net/ directory is compiled. Move the CONFIG_NET guard to the top Makefile so the net/ directory is entirely skipped. When Kbuild visits net/Makefile, CONFIG_NET is obvioulsy 'y' because CONFIG_NET is a bool option. Clean up net/Makefile. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Link: https://lore.kernel.org/r/20210125231659.106201-1-masahiroy@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
* | | | | | Linux 5.11v5.11Linus Torvalds2021-02-141-2/+2
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* | | | | Linux 5.11-rc7v5.11-rc7Linus Torvalds2021-02-071-1/+1
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* | | | | Merge tag 'x86_urgent_for_v5.11_rc7' of ↵Linus Torvalds2021-02-071-6/+0
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fixes from Borislav Petkov: "I hope this is the last batch of x86/urgent updates for this round: - Remove superfluous EFI PGD range checks which lead to those assertions failing with certain kernel configs and LLVM. - Disable setting breakpoints on facilities involved in #DB exception handling to avoid infinite loops. - Add extra serialization to non-serializing MSRs (IA32_TSC_DEADLINE and x2 APIC MSRs) to adhere to SDM's recommendation and avoid any theoretical issues. - Re-add the EPB MSR reading on turbostat so that it works on older kernels which don't have the corresponding EPB sysfs file. - Add Alder Lake to the list of CPUs which support split lock. - Fix %dr6 register handling in order to be able to set watchpoints with gdb again. - Disable CET instrumentation in the kernel so that gcc doesn't add ENDBR64 to kernel code and thus confuse tracing" * tag 'x86_urgent_for_v5.11_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/efi: Remove EFI PGD build time checks x86/debug: Prevent data breakpoints on cpu_dr7 x86/debug: Prevent data breakpoints on __per_cpu_offset x86/apic: Add extra serialization for non-serializing MSRs tools/power/turbostat: Fallback to an MSR read for EPB x86/split_lock: Enable the split lock feature on another Alder Lake CPU x86/debug: Fix DR6 handling x86/build: Disable CET instrumentation in the kernel
| * | | | | x86/build: Disable CET instrumentation in the kernelJosh Poimboeuf2021-01-291-6/+0
| | |/ / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With retpolines disabled, some configurations of GCC, and specifically the GCC versions 9 and 10 in Ubuntu will add Intel CET instrumentation to the kernel by default. That breaks certain tracing scenarios by adding a superfluous ENDBR64 instruction before the fentry call, for functions which can be called indirectly. CET instrumentation isn't currently necessary in the kernel, as CET is only supported in user space. Disable it unconditionally and move it into the x86's Makefile as CET/CFI... enablement should be a per-arch decision anyway. [ bp: Massage and extend commit message. ] Fixes: 29be86d7f9cb ("kbuild: add -fcf-protection=none when using retpoline flags") Reported-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Tested-by: Nikolay Borisov <nborisov@suse.com> Cc: <stable@vger.kernel.org> Cc: Seth Forshee <seth.forshee@canonical.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Link: https://lkml.kernel.org/r/20210128215219.6kct3h2eiustncws@treble
* | | | | Merge tag 'kbuild-fixes-v5.11-2' of ↵Linus Torvalds2021-02-071-3/+4
|\ \ \ \ \ | |_|_|/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Use the 'python3' command to invoke python scripts because some distributions do not provide the 'python' command any more. - Clean-up and update documents - Use pkg-config to search libcrypto - Fix duplicated debug flags - Ignore some more stubs in scripts/kallsyms.c * tag 'kbuild-fixes-v5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kallsyms: fix nonconverging kallsyms table with lld kbuild: fix duplicated flags in DEBUG_CFLAGS scripts/clang-tools: switch explicitly to Python 3 kbuild: remove PYTHON variable Documentation/llvm: Add a section about supported architectures Revert "checkpatch: add check for keyword 'boolean' in Kconfig definitions" scripts: use pkg-config to locate libcrypto kconfig: mconf: fix HOSTCC call doc: gcc-plugins: update gcc-plugins.rst kbuild: simplify GCC_PLUGINS enablement in dummy-tools/gcc Documentation/Kbuild: Remove references to gcc-plugin.sh scripts: switch explicitly to Python 3
| * | | | kbuild: fix duplicated flags in DEBUG_CFLAGSMasahiro Yamada2021-02-051-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sedat Dilek noticed duplicated flags in DEBUG_CFLAGS when building deb-pkg with CONFIG_DEBUG_INFO. For example, 'make CC=clang bindeb-pkg' reproduces the issue. Kbuild recurses to the top Makefile for some targets such as package builds. With commit 121c5d08d53c ("kbuild: Only add -fno-var-tracking-assignments for old GCC versions") applied, DEBUG_CFLAGS is now reset only when CONFIG_CC_IS_GCC=y. Fix it to reset DEBUG_CFLAGS all the time. Fixes: 121c5d08d53c ("kbuild: Only add -fno-var-tracking-assignments for old GCC versions") Reported-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Reviewed-by: Mark Wielaard <mark@klomp.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org>
| * | | | kbuild: remove PYTHON variableMasahiro Yamada2021-02-011-2/+1
| | |/ / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Python retired in 2020, and some distributions do not provide the 'python' command any more. As in commit 51839e29cb59 ("scripts: switch explicitly to Python 3"), we need to use more specific 'python3' to invoke scripts even if they are written in a way compatible with both Python 2 and 3. This commit removes the variable 'PYTHON', and switches the existing users to 'PYTHON3'. BTW, PEP 394 (https://www.python.org/dev/peps/pep-0394/) is a helpful material. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* | | | Linux 5.11-rc6v5.11-rc6Linus Torvalds2021-01-311-1/+1
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* | | Linux 5.11-rc5v5.11-rc5Linus Torvalds2021-01-251-1/+1
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* | Linux 5.11-rc4v5.11-rc4Linus Torvalds2021-01-181-1/+1
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* | Linux 5.11-rc3v5.11-rc3Linus Torvalds2021-01-101-1/+1
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* | Linux 5.11-rc2v5.11-rc2Linus Torvalds2021-01-041-1/+1
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* Linux 5.11-rc1v5.11-rc1Linus Torvalds2020-12-281-2/+2
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* Merge tag 'kbuild-v5.11' of ↵Linus Torvalds2020-12-221-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild 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
| * kbuild: don't hardcode depmod pathDominique Martinet2020-12-211-1/+1
| | | | | | | | | | | | | | | | depmod is not guaranteed to be in /sbin, just let make look for it in the path like all the other invoked programs Signed-off-by: Dominique Martinet <asmadeus@codewreck.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* | Linux 5.10v5.10Linus Torvalds2020-12-131-1/+1
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* Linux 5.10-rc7v5.10-rc7Linus Torvalds2020-12-061-1/+1
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* Merge tag 'kbuild-fixes-v5.10-2' of ↵Linus Torvalds2020-12-061-1/+9
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Move -Wcast-align to W=3, which tends to be false-positive and there is no tree-wide solution. - Pass -fmacro-prefix-map to KBUILD_CPPFLAGS because it is a preprocessor option and makes sense for .S files as well. - Disable -gdwarf-2 for Clang's integrated assembler to avoid warnings. - Disable --orphan-handling=warn for LLD 10.0.1 to avoid warnings. - Fix undesirable line breaks in *.mod files. * tag 'kbuild-fixes-v5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: avoid split lines in .mod files kbuild: Disable CONFIG_LD_ORPHAN_WARN for ld.lld 10.0.1 kbuild: Hoist '--orphan-handling' into Kconfig Kbuild: do not emit debug info for assembly with LLVM_IAS=1 kbuild: use -fmacro-prefix-map for .S sources Makefile.extrawarn: move -Wcast-align to W=3
| * kbuild: Hoist '--orphan-handling' into KconfigNathan Chancellor2020-12-011-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, '--orphan-handling=warn' is spread out across four different architectures in their respective Makefiles, which makes it a little unruly to deal with in case it needs to be disabled for a specific linker version (in this case, ld.lld 10.0.1). To make it easier to control this, hoist this warning into Kconfig and the main Makefile so that disabling it is simpler, as the warning will only be enabled in a couple places (main Makefile and a couple of compressed boot folders that blow away LDFLAGS_vmlinx) and making it conditional is easier due to Kconfig syntax. One small additional benefit of this is saving a call to ld-option on incremental builds because we will have already evaluated it for CONFIG_LD_ORPHAN_WARN. To keep the list of supported architectures the same, introduce CONFIG_ARCH_WANT_LD_ORPHAN_WARN, which an architecture can select to gain this automatically after all of the sections are specified and size asserted. A special thanks to Kees Cook for the help text on this config. Link: https://github.com/ClangBuiltLinux/linux/issues/1187 Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
| * Kbuild: do not emit debug info for assembly with LLVM_IAS=1Nick Desaulniers2020-11-241-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clang's integrated assembler produces the warning for assembly files: warning: DWARF2 only supports one section per compilation unit If -Wa,-gdwarf-* is unspecified, then debug info is not emitted for assembly sources (it is still emitted for C sources). This will be re-enabled for newer DWARF versions in a follow up patch. Enables defconfig+CONFIG_DEBUG_INFO to build cleanly with LLVM=1 LLVM_IAS=1 for x86_64 and arm64. Cc: <stable@vger.kernel.org> Link: https://github.com/ClangBuiltLinux/linux/issues/716 Reported-by: Dmitry Golovin <dima@golovin.in> Reported-by: Nathan Chancellor <natechancellor@gmail.com> Suggested-by: Dmitry Golovin <dima@golovin.in> Suggested-by: Nathan Chancellor <natechancellor@gmail.com> Suggested-by: Sedat Dilek <sedat.dilek@gmail.com> Reviewed-by: Fangrui Song <maskray@google.com> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
| * kbuild: use -fmacro-prefix-map for .S sourcesDenys Zagorui2020-11-241-1/+1
| | | | | | | | | | | | | | | | | | Follow-up to commit a73619a845d5 ("kbuild: use -fmacro-prefix-map to make __FILE__ a relative path"). Assembler sources also use __FILE__ macro so this flag should be also applied to those sources. Signed-off-by: Denys Zagorui <dzagorui@cisco.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* | Linux 5.10-rc6v5.10-rc6Linus Torvalds2020-11-301-1/+1
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* | Merge tag 'kbuild-fixes-v5.10' of ↵Linus Torvalds2020-11-281-3/+1
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Remove unused OBJSIZE variable. - Fix rootless deb-pkg build in a setgid directory. * tag 'kbuild-fixes-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: builddeb: Fix rootless build in setuid/setgid directory kbuild: remove unused OBJSIZE
| * kbuild: remove unused OBJSIZEVasily Gorbik2020-11-021-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | The "size" tool has been solely used by s390 to enforce .bss section usage restrictions in early startup code. Since commit 980d5f9ab36b ("s390/boot: enable .bss section for compressed kernel") and commit 2e83e0eb85ca ("s390: clean .bss before running uncompressed kernel") these restrictions have been lifted for the decompressor and uncompressed kernel and the size tool is now unused. Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* | Linux 5.10-rc5v5.10-rc5Linus Torvalds2020-11-231-1/+1
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* | Linux 5.10-rc4v5.10-rc4Linus Torvalds2020-11-161-1/+1
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* | Linux 5.10-rc3v5.10-rc3Linus Torvalds2020-11-091-1/+1
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* Linux 5.10-rc2v5.10-rc2Linus Torvalds2020-11-011-1/+1
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* Linux 5.10-rc1v5.10-rc1Linus Torvalds2020-10-251-2/+2
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* Merge tag 'kbuild-v5.10' of ↵Linus Torvalds2020-10-221-24/+70
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Support 'make compile_commands.json' to generate the compilation database more easily, avoiding stale entries - Support 'make clang-analyzer' and 'make clang-tidy' for static checks using clang-tidy - Preprocess scripts/modules.lds.S to allow CONFIG options in the module linker script - Drop cc-option tests from compiler flags supported by our minimal GCC/Clang versions - Use always 12-digits commit hash for CONFIG_LOCALVERSION_AUTO=y - Use sha1 build id for both BFD linker and LLD - Improve deb-pkg for reproducible builds and rootless builds - Remove stale, useless scripts/namespace.pl - Turn -Wreturn-type warning into error - Fix build error of deb-pkg when CONFIG_MODULES=n - Replace 'hostname' command with more portable 'uname -n' - Various Makefile cleanups * tag 'kbuild-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits) kbuild: Use uname for LINUX_COMPILE_HOST detection kbuild: Only add -fno-var-tracking-assignments for old GCC versions kbuild: remove leftover comment for filechk utility treewide: remove DISABLE_LTO kbuild: deb-pkg: clean up package name variables kbuild: deb-pkg: do not build linux-headers package if CONFIG_MODULES=n kbuild: enforce -Werror=return-type scripts: remove namespace.pl builddeb: Add support for all required debian/rules targets builddeb: Enable rootless builds builddeb: Pass -n to gzip for reproducible packages kbuild: split the build log of kallsyms kbuild: explicitly specify the build id style scripts/setlocalversion: make git describe output more reliable kbuild: remove cc-option test of -Werror=date-time kbuild: remove cc-option test of -fno-stack-check kbuild: remove cc-option test of -fno-strict-overflow kbuild: move CFLAGS_{KASAN,UBSAN,KCSAN} exports to relevant Makefiles kbuild: remove redundant CONFIG_KASAN check from scripts/Makefile.kasan kbuild: do not create built-in objects for external module builds ...
| * kbuild: Only add -fno-var-tracking-assignments for old GCC versionsMark Wielaard2020-10-201-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some old GCC versions between 4.5.0 and 4.9.1 might miscompile code with -fvar-tracking-assingments (which is enabled by default with -g -O2). Commit 2062afb4f804 ("Fix gcc-4.9.0 miscompilation of load_balance() in scheduler") added -fno-var-tracking-assignments unconditionally to work around this. But newer versions of GCC no longer have this bug, so only add it for versions of GCC before 5.0. This allows various tools such as a perf probe or gdb debuggers or systemtap to resolve variable locations using dwarf locations in more code. Signed-off-by: Mark Wielaard <mark@klomp.org> Acked-by: Ian Rogers <irogers@google.com> Reviewed-by: Andi Kleen <andi@firstfloor.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
| * kbuild: enforce -Werror=return-typeOlaf Hering2020-10-121-1/+1
| | | | | | | | | | | | | | | | Catch errors which at least gcc tolerates by default: warning: 'return' with no value, in function returning non-void [-Wreturn-type] Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
| * scripts: remove namespace.plJacob Keller2020-10-111-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | namespace.pl is intended to help locate symbols which are defined but are not used externally. The goal is to avoid bloat of the namespace in the resulting kernel image. The script relies on object data, and only finds unused symbols for the configuration used to generate that object data. This results in a lot of false positive warnings such as symbols only used by a single architecture, or symbols which are used externally only under certain configurations. Running namespace.pl using allyesconfig, allmodconfig, and x86_64_defconfig yields the following results: * allmodconfig * 11122 unique symbol names with no external reference * 1194 symbols listed as multiply defined * 214 symbols it can't resolve * allyesconfig * 10997 unique symbol names with no external reference * 1194 symbols listed as multiply defined * 214 symbols it can't resolve * x86_64_defconfig * 5757 unique symbol names with no external reference * 528 symbols listed as multiply defined * 154 symbols it can't resolve The script also has no way to easily limit the scope of the checks to a given subset of the kernel, such as only checking for symbols defined within a module or subsystem. Discussion on public mailing lists seems to indicate that many view the tool output as suspect or not very useful (see discussions at [1] and [2] for further context). As described by Masahiro Yamada at [2], namespace.pl provides 3 types of checks: listing multiply defined symbols, resolving external symbols, and warnings about symbols with no reference. The first category of issues is easily caught by the linker as any set of multiply defined symbols should fail to link. The second category of issues is also caught by linking, as undefined symbols would cause issues. Even with modules, these types of issues where a module relies on an external symbol are caught by modpost. The remaining category of issues reported is the list of symbols with no external reference, and is the primary motivation of this script. However, it ought to be clear from the above examples that the output is difficult to sort through. Even allyesconfig has ~10000 entries. The current submit-checklist indicates that patches ought to go through namespacecheck and fix any new issues arising. But that itself presents problems. As described at [1], many cases of reports are due to configuration where a function is used externally by some configuration settings. Prominent maintainers appear to dislike changes modify code such that symbols become static based on CONFIG_* flags ([3], and [4]) One possible solution is to adjust the advice and indicate that we only care about the output of namespacecheck on allyesconfig or allmodconfig builds... However, given the discussion at [2], I suspect that few people are actively using this tool. It doesn't have a maintainer in the MAINTAINERS flie, and it produces so many warnings for unused symbols that it is difficult to use effectively. Thus, I propose we simply remove it. [1] https://lore.kernel.org/netdev/20200708164812.384ae8ea@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com/ [2] https://lore.kernel.org/lkml/20190129204319.15238-1-jacob.e.keller@intel.com/ [3] https://lore.kernel.org/netdev/20190828.154744.2058157956381129672.davem@davemloft.net/ [4] https://lore.kernel.org/netdev/20190827210928.576c5fef@cakuba.netronome.com/ Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
| * kbuild: explicitly specify the build id styleBill Wendling2020-10-091-2/+2
| | | | | | | | | | | | | | | | | | | | ld's --build-id defaults to "sha1" style, while lld defaults to "fast". The build IDs are very different between the two, which may confuse programs that reference them. Signed-off-by: Bill Wendling <morbo@google.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
| * kbuild: remove cc-option test of -Werror=date-timeMasahiro Yamada2020-09-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | The minimal compiler versions, GCC 4.9 and Clang 10 support this flag. Here is the godbolt: https://godbolt.org/z/xvjcMa Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Will Deacon <will@kernel.org>
| * kbuild: remove cc-option test of -fno-stack-checkMasahiro Yamada2020-09-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The minimal compiler version, GCC 4.9 supports this flag. Nathan Chancellor pointed out: "This flag is technically ignored by clang (see commit 05b0798916f01690b5903302e51f3136274e291f) but that obviously does not matter for the sake of this." Here is the godbolt: https://godbolt.org/z/59cK6o Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
| * kbuild: remove cc-option test of -fno-strict-overflowMasahiro Yamada2020-09-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | The minimal compiler versions, GCC 4.9 and Clang 10 support this flag. Here is the godbolt: https://godbolt.org/z/odq8h9 Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Will Deacon <will@kernel.org>
| * kbuild: move CFLAGS_{KASAN,UBSAN,KCSAN} exports to relevant MakefilesMasahiro Yamada2020-09-241-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move CFLAGS_KASAN*, CFLAGS_UBSAN, CFLAGS_KCSAN to Makefile.kasan, Makefile.ubsan, Makefile.kcsan, respectively. This commit also avoids the same -fsanitize=* flags being added to CFLAGS_UBSAN multiple times. Prior to this commit, the ubsan flags were appended by the '+=' operator, without any initialization. Some build targets such as 'make bindeb-pkg' recurses to the top Makefile, and ended up with adding the same flags to CFLAGS_UBSAN twice. Clear CFLAGS_UBSAN with ':=' to make it a simply expanded variable. This is better than a recursively expanded variable, which evaluates $(call cc-option, ...) multiple times before Kbuild starts descending to subdirectories. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Marco Elver <elver@google.com>
| * kbuild: do not create built-in objects for external module buildsMasahiro Yamada2020-09-241-1/+2
| | | | | | | | | | | | | | | | | | | | | | 'make M=/path/to/your/external/module' creates a pointless built-in.a in the top of the external module directory because KBUILD_BUILTIN is set to 1. Clear KBUILD_BUILTIN when we are building external modules so that 'make M=...' and 'make M=... modules' work equivalently. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
| * kbuild: preprocess module linker scriptMasahiro Yamada2020-09-241-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There was a request to preprocess the module linker script like we do for the vmlinux one. (https://lkml.org/lkml/2020/8/21/512) The difference between vmlinux.lds and module.lds is that the latter is needed for external module builds, thus must be cleaned up by 'make mrproper' instead of 'make clean'. Also, it must be created by 'make modules_prepare'. You cannot put it in arch/$(SRCARCH)/kernel/, which is cleaned up by 'make clean'. I moved arch/$(SRCARCH)/kernel/module.lds to arch/$(SRCARCH)/include/asm/module.lds.h, which is included from scripts/module.lds.S. scripts/module.lds is fine because 'make clean' keeps all the build artifacts under scripts/. You can add arch-specific sections in <asm/module.lds.h>. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Jessica Yu <jeyu@kernel.org> Acked-by: Will Deacon <will@kernel.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Palmer Dabbelt <palmerdabbelt@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Jessica Yu <jeyu@kernel.org>
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