d14b0a93faf6309aceb671489369dfcec28c3b04
65 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Preeti Nagar
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7183d8c9a1 |
Enable RTIC MPGen using QGKI
Added RTIC environmental variable check. If set, this will trigger RTIC MPGen during the kernel build. MPGen generates and embeds the kernel MP.s (measurement parameters) to the vmlinux. It has to be called during the kernel build, before vmlinux is generated. RTIC MP.s to be consumed by the RTIC TA. Change-Id: I035ea2580bef891e0a8c50c3992ecdfd48cc0a62 Signed-off-by: Preeti Nagar <pnagar@codeaurora.org> |
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Greg Kroah-Hartman
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835bd1de9c |
Merge 5.4.22 into android-5.4
Changes in 5.4.22
core: Don't skip generic XDP program execution for cloned SKBs
enic: prevent waking up stopped tx queues over watchdog reset
net/smc: fix leak of kernel memory to user space
net: dsa: tag_qca: Make sure there is headroom for tag
net/sched: matchall: add missing validation of TCA_MATCHALL_FLAGS
net/sched: flower: add missing validation of TCA_FLOWER_FLAGS
drm/gma500: Fixup fbdev stolen size usage evaluation
ath10k: Fix qmi init error handling
wil6210: fix break that is never reached because of zero'ing of a retry counter
drm/qxl: Complete exception handling in qxl_device_init()
rcu/nocb: Fix dump_tree hierarchy print always active
rcu: Fix missed wakeup of exp_wq waiters
rcu: Fix data-race due to atomic_t copy-by-value
f2fs: preallocate DIO blocks when forcing buffered_io
f2fs: call f2fs_balance_fs outside of locked page
media: meson: add missing allocation failure check on new_buf
clk: meson: pll: Fix by 0 division in __pll_params_to_rate()
cpu/hotplug, stop_machine: Fix stop_machine vs hotplug order
brcmfmac: Fix memory leak in brcmf_p2p_create_p2pdev()
brcmfmac: Fix use after free in brcmf_sdio_readframes()
PCI: Fix pci_add_dma_alias() bitmask size
drm/amd/display: Map ODM memory correctly when doing ODM combine
leds: pca963x: Fix open-drain initialization
ext4: fix ext4_dax_read/write inode locking sequence for IOCB_NOWAIT
ALSA: ctl: allow TLV read operation for callback type of element in locked case
gianfar: Fix TX timestamping with a stacked DSA driver
pinctrl: sh-pfc: sh7264: Fix CAN function GPIOs
printk: fix exclusive_console replaying
drm/mipi_dbi: Fix off-by-one bugs in mipi_dbi_blank()
drm/msm/adreno: fix zap vs no-zap handling
pxa168fb: Fix the function used to release some memory in an error handling path
media: ov5640: Fix check for PLL1 exceeding max allowed rate
media: i2c: mt9v032: fix enum mbus codes and frame sizes
media: sun4i-csi: Deal with DRAM offset
media: sun4i-csi: Fix data sampling polarity handling
media: sun4i-csi: Fix [HV]sync polarity handling
clk: at91: sam9x60: fix programmable clock prescaler
powerpc/powernv/iov: Ensure the pdn for VFs always contains a valid PE number
clk: meson: meson8b: make the CCF use the glitch-free mali mux
gpio: gpio-grgpio: fix possible sleep-in-atomic-context bugs in grgpio_irq_map/unmap()
iommu/vt-d: Fix off-by-one in PASID allocation
x86/fpu: Deactivate FPU state after failure during state load
char/random: silence a lockdep splat with printk()
media: sti: bdisp: fix a possible sleep-in-atomic-context bug in bdisp_device_run()
kernel/module: Fix memleak in module_add_modinfo_attrs()
IB/core: Let IB core distribute cache update events
pinctrl: baytrail: Do not clear IRQ flags on direct-irq enabled pins
efi/x86: Map the entire EFI vendor string before copying it
MIPS: Loongson: Fix potential NULL dereference in loongson3_platform_init()
sparc: Add .exit.data section.
net: ethernet: ixp4xx: Standard module init
raid6/test: fix a compilation error
uio: fix a sleep-in-atomic-context bug in uio_dmem_genirq_irqcontrol()
drm/amdgpu/sriov: workaround on rev_id for Navi12 under sriov
spi: fsl-lpspi: fix only one cs-gpio working
drm/nouveau/nouveau: fix incorrect sizeof on args.src an args.dst
usb: gadget: udc: fix possible sleep-in-atomic-context bugs in gr_probe()
usb: dwc2: Fix IN FIFO allocation
clocksource/drivers/bcm2835_timer: Fix memory leak of timer
drm/amd/display: Clear state after exiting fixed active VRR state
kselftest: Minimise dependency of get_size on C library interfaces
jbd2: clear JBD2_ABORT flag before journal_reset to update log tail info when load journal
ext4: fix deadlock allocating bio_post_read_ctx from mempool
clk: ti: dra7: fix parent for gmac_clkctrl
x86/sysfb: Fix check for bad VRAM size
pwm: omap-dmtimer: Simplify error handling
udf: Allow writing to 'Rewritable' partitions
dmaengine: fsl-qdma: fix duplicated argument to &&
wan/hdlc_x25: fix skb handling
s390/pci: Fix possible deadlock in recover_store()
powerpc/iov: Move VF pdev fixup into pcibios_fixup_iov()
tracing: Fix tracing_stat return values in error handling paths
tracing: Fix very unlikely race of registering two stat tracers
ARM: 8952/1: Disable kmemleak on XIP kernels
ext4, jbd2: ensure panic when aborting with zero errno
ath10k: Correct the DMA direction for management tx buffers
rtw88: fix rate mask for 1SS chip
brcmfmac: sdio: Fix OOB interrupt initialization on brcm43362
selftests: settings: tests can be in subsubdirs
rtc: i2c/spi: Avoid inclusion of REGMAP support when not needed
drm/amd/display: Retrain dongles when SINK_COUNT becomes non-zero
tracing: Simplify assignment parsing for hist triggers
nbd: add a flush_workqueue in nbd_start_device
KVM: s390: ENOTSUPP -> EOPNOTSUPP fixups
Btrfs: keep pages dirty when using btrfs_writepage_fixup_worker
drivers/block/zram/zram_drv.c: fix error return codes not being returned in writeback_store
block, bfq: do not plug I/O for bfq_queues with no proc refs
kconfig: fix broken dependency in randconfig-generated .config
clk: qcom: Don't overwrite 'cfg' in clk_rcg2_dfs_populate_freq()
clk: qcom: rcg2: Don't crash if our parent can't be found; return an error
drm/amdkfd: Fix a bug in SDMA RLC queue counting under HWS mode
bpf, sockhash: Synchronize_rcu before free'ing map
drm/amdgpu: remove 4 set but not used variable in amdgpu_atombios_get_connector_info_from_object_table
ath10k: correct the tlv len of ath10k_wmi_tlv_op_gen_config_pno_start
drm/amdgpu: Ensure ret is always initialized when using SOC15_WAIT_ON_RREG
drm/panel: simple: Add Logic PD Type 28 display support
arm64: dts: rockchip: Fix NanoPC-T4 cooling maps
modules: lockdep: Suppress suspicious RCU usage warning
ASoC: intel: sof_rt5682: Add quirk for number of HDMI DAI's
ASoC: intel: sof_rt5682: Add support for tgl-max98357a-rt5682
regulator: rk808: Lower log level on optional GPIOs being not available
net/wan/fsl_ucc_hdlc: reject muram offsets above 64K
NFC: port100: Convert cpu_to_le16(le16_to_cpu(E1) + E2) to use le16_add_cpu().
arm64: dts: allwinner: H6: Add PMU mode
arm64: dts: allwinner: H5: Add PMU node
arm: dts: allwinner: H3: Add PMU node
opp: Free static OPPs on errors while adding them
selinux: ensure we cleanup the internal AVC counters on error in avc_insert()
arm64: dts: qcom: msm8996: Disable USB2 PHY suspend by core
padata: validate cpumask without removed CPU during offline
clk: imx: Add correct failure handling for clk based helpers
ARM: exynos_defconfig: Bring back explicitly wanted options
ARM: dts: imx6: rdu2: Disable WP for USDHC2 and USDHC3
ARM: dts: imx6: rdu2: Limit USBH1 to Full Speed
bus: ti-sysc: Implement quirk handling for CLKDM_NOAUTO
PCI: iproc: Apply quirk_paxc_bridge() for module as well as built-in
media: cx23885: Add support for AVerMedia CE310B
PCI: Add generic quirk for increasing D3hot delay
PCI: Increase D3 delay for AMD Ryzen5/7 XHCI controllers
Revert "nfp: abm: fix memory leak in nfp_abm_u32_knode_replace"
gpu/drm: ingenic: Avoid null pointer deference in plane atomic update
selftests/net: make so_txtime more robust to timer variance
media: v4l2-device.h: Explicitly compare grp{id,mask} to zero in v4l2_device macros
reiserfs: Fix spurious unlock in reiserfs_fill_super() error handling
samples/bpf: Set -fno-stack-protector when building BPF programs
r8169: check that Realtek PHY driver module is loaded
fore200e: Fix incorrect checks of NULL pointer dereference
netfilter: nft_tunnel: add the missing ERSPAN_VERSION nla_policy
ALSA: usx2y: Adjust indentation in snd_usX2Y_hwdep_dsp_status
PCI: Add nr_devfns parameter to pci_add_dma_alias()
PCI: Add DMA alias quirk for PLX PEX NTB
b43legacy: Fix -Wcast-function-type
ipw2x00: Fix -Wcast-function-type
iwlegacy: Fix -Wcast-function-type
rtlwifi: rtl_pci: Fix -Wcast-function-type
orinoco: avoid assertion in case of NULL pointer
drm/amdgpu: fix KIQ ring test fail in TDR of SRIOV
clk: qcom: smd: Add missing bimc clock
ACPICA: Disassembler: create buffer fields in ACPI_PARSE_LOAD_PASS1
nfsd: Clone should commit src file metadata too
scsi: ufs: Complete pending requests in host reset and restore path
scsi: aic7xxx: Adjust indentation in ahc_find_syncrate
crypto: inside-secure - add unspecified HAS_IOMEM dependency
drm/mediatek: handle events when enabling/disabling crtc
clk: renesas: rcar-gen3: Allow changing the RPC[D2] clocks
ARM: dts: r8a7779: Add device node for ARM global timer
selinux: ensure we cleanup the internal AVC counters on error in avc_update()
scsi: lpfc: Fix: Rework setting of fdmi symbolic node name registration
arm64: dts: qcom: db845c: Enable ath10k 8bit host-cap quirk
iommu/amd: Check feature support bit before accessing MSI capability registers
iommu/amd: Only support x2APIC with IVHD type 11h/40h
iommu/iova: Silence warnings under memory pressure
clk: actually call the clock init before any other callback of the clock
dmaengine: Store module owner in dma_device struct
dmaengine: imx-sdma: Fix memory leak
bpf: Print error message for bpftool cgroup show
net: phy: realtek: add logging for the RGMII TX delay configuration
crypto: chtls - Fixed memory leak
x86/vdso: Provide missing include file
PM / devfreq: exynos-ppmu: Fix excessive stack usage
PM / devfreq: rk3399_dmc: Add COMPILE_TEST and HAVE_ARM_SMCCC dependency
drm/fbdev: Fallback to non tiled mode if all tiles not present
pinctrl: sh-pfc: sh7269: Fix CAN function GPIOs
reset: uniphier: Add SCSSI reset control for each channel
ASoC: soc-topology: fix endianness issues
fbdev: fix numbering of fbcon options
RDMA/rxe: Fix error type of mmap_offset
clk: sunxi-ng: add mux and pll notifiers for A64 CPU clock
ALSA: sh: Fix unused variable warnings
clk: Use parent node pointer during registration if necessary
clk: uniphier: Add SCSSI clock gate for each channel
ALSA: hda/realtek - Apply mic mute LED quirk for Dell E7xx laptops, too
ALSA: sh: Fix compile warning wrt const
net: phy: fixed_phy: fix use-after-free when checking link GPIO
tools lib api fs: Fix gcc9 stringop-truncation compilation error
vfio/spapr/nvlink2: Skip unpinning pages on error exit
ASoC: Intel: sof_rt5682: Ignore the speaker amp when there isn't one.
ACPI: button: Add DMI quirk for Razer Blade Stealth 13 late 2019 lid switch
iommu/vt-d: Match CPU and IOMMU paging mode
iommu/vt-d: Avoid sending invalid page response
drm/amdkfd: Fix permissions of hang_hws
mlx5: work around high stack usage with gcc
RDMA/hns: Avoid printing address of mtt page
drm: remove the newline for CRC source name.
usb: dwc3: use proper initializers for property entries
ARM: dts: stm32: Add power-supply for DSI panel on stm32f469-disco
usbip: Fix unsafe unaligned pointer usage
udf: Fix free space reporting for metadata and virtual partitions
drm/mediatek: Add gamma property according to hardware capability
staging: rtl8188: avoid excessive stack usage
IB/hfi1: Add software counter for ctxt0 seq drop
IB/hfi1: Add RcvShortLengthErrCnt to hfi1stats
soc/tegra: fuse: Correct straps' address for older Tegra124 device trees
efi/x86: Don't panic or BUG() on non-critical error conditions
rcu: Use WRITE_ONCE() for assignments to ->pprev for hlist_nulls
Input: edt-ft5x06 - work around first register access error
bnxt: Detach page from page pool before sending up the stack
x86/nmi: Remove irq_work from the long duration NMI handler
wan: ixp4xx_hss: fix compile-testing on 64-bit
clocksource: davinci: only enable clockevents once tim34 is initialized
arm64: dts: rockchip: fix dwmmc clock name for px30
arm64: dts: rockchip: add reg property to brcmf sub-nodes
ARM: dts: rockchip: add reg property to brcmf sub node for rk3188-bqedison2qc
ALSA: usb-audio: Add boot quirk for MOTU M Series
ASoC: atmel: fix build error with CONFIG_SND_ATMEL_SOC_DMA=m
raid6/test: fix a compilation warning
tty: synclinkmp: Adjust indentation in several functions
tty: synclink_gt: Adjust indentation in several functions
misc: xilinx_sdfec: fix xsdfec_poll()'s return type
visorbus: fix uninitialized variable access
driver core: platform: Prevent resouce overflow from causing infinite loops
driver core: Print device when resources present in really_probe()
ASoC: SOF: Intel: hda-dai: fix compilation warning in pcm_prepare
bpf: Return -EBADRQC for invalid map type in __bpf_tx_xdp_map
vme: bridges: reduce stack usage
drm/nouveau/secboot/gm20b: initialize pointer in gm20b_secboot_new()
drm/nouveau/gr/gk20a,gm200-: add terminators to method lists read from fw
drm/nouveau: Fix copy-paste error in nouveau_fence_wait_uevent_handler
drm/nouveau/drm/ttm: Remove set but not used variable 'mem'
drm/nouveau/fault/gv100-: fix memory leak on module unload
dm thin: don't allow changing data device during thin-pool reload
gpiolib: Set lockdep class for hierarchical irq domains
drm/vmwgfx: prevent memory leak in vmw_cmdbuf_res_add
perf/imx_ddr: Fix cpu hotplug state cleanup
usb: musb: omap2430: Get rid of musb .set_vbus for omap2430 glue
kbuild: remove *.tmp file when filechk fails
iommu/arm-smmu-v3: Use WRITE_ONCE() when changing validity of an STE
ALSA: usb-audio: unlock on error in probe
f2fs: set I_LINKABLE early to avoid wrong access by vfs
f2fs: free sysfs kobject
scsi: ufs: pass device information to apply_dev_quirks
scsi: ufs-mediatek: add apply_dev_quirks variant operation
scsi: iscsi: Don't destroy session if there are outstanding connections
crypto: essiv - fix AEAD capitalization and preposition use in help text
ALSA: usb-audio: add implicit fb quirk for MOTU M Series
RDMA/mlx5: Don't fake udata for kernel path
arm64: lse: fix LSE atomics with LLVM's integrated assembler
arm64: fix alternatives with LLVM's integrated assembler
drm/amd/display: fixup DML dependencies
EDAC/sifive: Fix return value check in ecc_register()
KVM: PPC: Remove set but not used variable 'ra', 'rs', 'rt'
arm64: dts: ti: k3-j721e-main: Add missing power-domains for smmu
sched/core: Fix size of rq::uclamp initialization
sched/topology: Assert non-NUMA topology masks don't (partially) overlap
perf/x86/amd: Constrain Large Increment per Cycle events
watchdog/softlockup: Enforce that timestamp is valid on boot
debugobjects: Fix various data races
ASoC: SOF: Intel: hda: Fix SKL dai count
regulator: vctrl-regulator: Avoid deadlock getting and setting the voltage
f2fs: fix memleak of kobject
x86/mm: Fix NX bit clearing issue in kernel_map_pages_in_pgd
pwm: omap-dmtimer: Remove PWM chip in .remove before making it unfunctional
cmd64x: potential buffer overflow in cmd64x_program_timings()
ide: serverworks: potential overflow in svwks_set_pio_mode()
pwm: Remove set but not set variable 'pwm'
btrfs: fix possible NULL-pointer dereference in integrity checks
btrfs: safely advance counter when looking up bio csums
btrfs: device stats, log when stats are zeroed
module: avoid setting info->name early in case we can fall back to info->mod->name
remoteproc: Initialize rproc_class before use
regulator: core: Fix exported symbols to the exported GPL version
irqchip/mbigen: Set driver .suppress_bind_attrs to avoid remove problems
ALSA: hda/hdmi - add retry logic to parse_intel_hdmi()
spi: spi-fsl-qspi: Ensure width is respected in spi-mem operations
kbuild: use -S instead of -E for precise cc-option test in Kconfig
objtool: Fix ARCH=x86_64 build error
x86/decoder: Add TEST opcode to Group3-2
s390: adjust -mpacked-stack support check for clang 10
s390/ftrace: generate traced function stack frame
driver core: platform: fix u32 greater or equal to zero comparison
bpf, btf: Always output invariant hit in pahole DWARF to BTF transform
ALSA: hda - Add docking station support for Lenovo Thinkpad T420s
sunrpc: Fix potential leaks in sunrpc_cache_unhash()
drm/nouveau/mmu: fix comptag memory leak
powerpc/sriov: Remove VF eeh_dev state when disabling SR-IOV
media: uvcvideo: Add a quirk to force GEO GC6500 Camera bits-per-pixel value
btrfs: separate definition of assertion failure handlers
btrfs: Fix split-brain handling when changing FSID to metadata uuid
bcache: cached_dev_free needs to put the sb page
bcache: rework error unwinding in register_bcache
bcache: fix use-after-free in register_bcache()
iommu/vt-d: Remove unnecessary WARN_ON_ONCE()
alarmtimer: Make alarmtimer platform device child of RTC device
selftests: bpf: Reset global state between reuseport test runs
jbd2: switch to use jbd2_journal_abort() when failed to submit the commit record
jbd2: make sure ESHUTDOWN to be recorded in the journal superblock
powerpc/pseries/lparcfg: Fix display of Maximum Memory
selftests/eeh: Bump EEH wait time to 60s
ARM: 8951/1: Fix Kexec compilation issue.
ALSA: usb-audio: add quirks for Line6 Helix devices fw>=2.82
hostap: Adjust indentation in prism2_hostapd_add_sta
rtw88: fix potential NULL skb access in TX ISR
iwlegacy: ensure loop counter addr does not wrap and cause an infinite loop
cifs: fix unitialized variable poential problem with network I/O cache lock patch
cifs: Fix mount options set in automount
cifs: fix NULL dereference in match_prepath
bpf: map_seq_next should always increase position index
powerpc/mm: Don't log user reads to 0xffffffff
ceph: check availability of mds cluster on mount after wait timeout
rbd: work around -Wuninitialized warning
drm/amd/display: do not allocate display_mode_lib unnecessarily
irqchip/gic-v3: Only provision redistributors that are enabled in ACPI
drm/nouveau/disp/nv50-: prevent oops when no channel method map provided
char: hpet: Fix out-of-bounds read bug
ftrace: fpid_next() should increase position index
trigger_next should increase position index
radeon: insert 10ms sleep in dce5_crtc_load_lut
powerpc: Do not consider weak unresolved symbol relocations as bad
btrfs: do not do delalloc reservation under page lock
ocfs2: make local header paths relative to C files
ocfs2: fix a NULL pointer dereference when call ocfs2_update_inode_fsync_trans()
lib/scatterlist.c: adjust indentation in __sg_alloc_table
reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
bcache: fix memory corruption in bch_cache_accounting_clear()
bcache: explicity type cast in bset_bkey_last()
bcache: fix incorrect data type usage in btree_flush_write()
irqchip/gic-v3-its: Reference to its_invall_cmd descriptor when building INVALL
nvmet: Pass lockdep expression to RCU lists
nvme-pci: remove nvmeq->tags
iwlwifi: mvm: Fix thermal zone registration
iwlwifi: mvm: Check the sta is not NULL in iwl_mvm_cfg_he_sta()
asm-generic/tlb: add missing CONFIG symbol
microblaze: Prevent the overflow of the start
brd: check and limit max_part par
drm/amdgpu/smu10: fix smu10_get_clock_by_type_with_latency
drm/amdgpu/smu10: fix smu10_get_clock_by_type_with_voltage
NFS: Fix memory leaks
help_next should increase position index
i40e: Relax i40e_xsk_wakeup's return value when PF is busy
cifs: log warning message (once) if out of disk space
virtio_balloon: prevent pfn array overflow
fuse: don't overflow LLONG_MAX with end offset
mlxsw: spectrum_dpipe: Add missing error path
s390/pci: Recover handle in clp_set_pci_fn()
drm/amdgpu/display: handle multiple numbers of fclks in dcn_calcs.c (v2)
bcache: properly initialize 'path' and 'err' in register_bcache()
rtc: Kconfig: select REGMAP_I2C when necessary
Linux 5.4.22
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Iaeb3945493ecc81a0ae90ef87b19ceb2caf48164
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Chris Down
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ea038a5270 |
bpf, btf: Always output invariant hit in pahole DWARF to BTF transform
[ Upstream commit
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Greg Kroah-Hartman
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33c8a1b2d0 |
Merge 5.4.15 into android-5.4
Changes in 5.4.15 drm/i915: Fix pid leak with banned clients libbpf: Fix compatibility for kernels without need_wakeup libbpf: Fix memory leak/double free issue libbpf: Fix potential overflow issue libbpf: Fix another potential overflow issue in bpf_prog_linfo libbpf: Make btf__resolve_size logic always check size error condition bpf: Force .BTF section start to zero when dumping from vmlinux samples: bpf: update map definition to new syntax BTF-defined map samples/bpf: Fix broken xdp_rxq_info due to map order assumptions ARM: dts: logicpd-torpedo-37xx-devkit-28: Reference new DRM panel ARM: OMAP2+: Add missing put_device() call in omapdss_init_of() xfs: Sanity check flags of Q_XQUOTARM call i2c: stm32f7: rework slave_id allocation i2c: i2c-stm32f7: fix 10-bits check in slave free id search loop mfd: intel-lpss: Add default I2C device properties for Gemini Lake SUNRPC: Fix svcauth_gss_proxy_init() SUNRPC: Fix backchannel latency metrics powerpc/security: Fix debugfs data leak on 32-bit powerpc/pseries: Enable support for ibm,drc-info property powerpc/kasan: Fix boot failure with RELOCATABLE && FSL_BOOKE powerpc/archrandom: fix arch_get_random_seed_int() tipc: reduce sensitive to retransmit failures tipc: update mon's self addr when node addr generated tipc: fix potential memory leak in __tipc_sendmsg() tipc: fix wrong socket reference counter after tipc_sk_timeout() returns tipc: fix wrong timeout input for tipc_wait_for_cond() net/mlx5e: Fix free peer_flow when refcount is 0 phy: lantiq: vrx200-pcie: fix error return code in ltq_vrx200_pcie_phy_power_on() net: phy: broadcom: Fix RGMII delays configuration for BCM54210E phy: ti: gmii-sel: fix mac tx internal delay for rgmii-rxid mt76: mt76u: fix endpoint definition order mt7601u: fix bbp version check in mt7601u_wait_bbp_ready ice: fix stack leakage s390/pkey: fix memory leak within _copy_apqns_from_user() nfsd: depend on CRYPTO_MD5 for legacy client tracking crypto: amcc - restore CRYPTO_AES dependency crypto: sun4i-ss - fix big endian issues perf map: No need to adjust the long name of modules leds: tlc591xx: update the maximum brightness soc/tegra: pmc: Fix crashes for hierarchical interrupts soc: qcom: llcc: Name regmaps to avoid collisions soc: renesas: Add missing check for non-zero product register address soc: aspeed: Fix snoop_file_poll()'s return type watchdog: sprd: Fix the incorrect pointer getting from driver data ipmi: Fix memory leak in __ipmi_bmc_register sched/core: Further clarify sched_class::set_next_task() gpiolib: No need to call gpiochip_remove_pin_ranges() twice rtw88: fix beaconing mode rsvd_page memory violation issue rtw88: fix error handling when setup efuse info drm/panfrost: Add missing check for pfdev->regulator drm: panel-lvds: Potential Oops in probe error handling drm/amdgpu: remove excess function parameter description hwrng: omap3-rom - Fix missing clock by probing with device tree dpaa2-eth: Fix minor bug in ethtool stats reporting drm/rockchip: Round up _before_ giving to the clock framework software node: Get reference to parent swnode in get_parent op PCI: mobiveil: Fix csr_read()/write() build issue drm: rcar_lvds: Fix color mismatches on R-Car H2 ES2.0 and later net: netsec: Correct dma sync for XDP_TX frames ACPI: platform: Unregister stale platform devices pwm: sun4i: Fix incorrect calculation of duty_cycle/period regulator: bd70528: Add MODULE_ALIAS to allow module auto loading drm/amdgpu/vi: silence an uninitialized variable warning power: supply: bd70528: Add MODULE_ALIAS to allow module auto loading firmware: imx: Remove call to devm_of_platform_populate libbpf: Don't use kernel-side u32 type in xsk.c rcu: Fix uninitialized variable in nocb_gp_wait() dpaa_eth: perform DMA unmapping before read dpaa_eth: avoid timestamp read on error paths scsi: ufs: delete redundant function ufshcd_def_desc_sizes() net: openvswitch: don't unlock mutex when changing the user_features fails hv_netvsc: flag software created hash value rt2800: remove errornous duplicate condition net: neigh: use long type to store jiffies delta net: axienet: Fix error return code in axienet_probe() selftests: gen_kselftest_tar.sh: Do not clobber kselftest/ rtc: bd70528: fix module alias to autoload module packet: fix data-race in fanout_flow_is_huge() i2c: stm32f7: report dma error during probe kselftests: cgroup: Avoid the reuse of fd after it is deallocated firmware: arm_scmi: Fix doorbell ring logic for !CONFIG_64BIT mmc: sdio: fix wl1251 vendor id mmc: core: fix wl1251 sdio quirks tee: optee: Fix dynamic shm pool allocations tee: optee: fix device enumeration error handling workqueue: Add RCU annotation for pwq list walk SUNRPC: Fix another issue with MIC buffer space sched/cpufreq: Move the cfs_rq_util_change() call to cpufreq_update_util() mt76: mt76u: rely on usb_interface instead of usb_dev dma-direct: don't check swiotlb=force in dma_direct_map_resource afs: Remove set but not used variables 'before', 'after' dmaengine: ti: edma: fix missed failure handling drm/radeon: fix bad DMA from INTERRUPT_CNTL2 xdp: Fix cleanup on map free for devmap_hash map type platform/chrome: wilco_ec: fix use after free issue block: fix memleak of bio integrity data s390/qeth: fix dangling IO buffers after halt/clear net-sysfs: Call dev_hold always in netdev_queue_add_kobject gpio: aspeed: avoid return type warning phy/rockchip: inno-hdmi: round clock rate down to closest 1000 Hz optee: Fix multi page dynamic shm pool alloc Linux 5.4.15 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I28b2a19657d40804406dc0e7c266296ce8768eb7 |
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Stanislav Fomichev
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c2227983d5 |
bpf: Force .BTF section start to zero when dumping from vmlinux
commit |
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Greg Kroah-Hartman
|
b0b02162a4 |
Merge 5.4.13 into android-5.4
Changes in 5.4.13 HID: hidraw, uhid: Always report EPOLLOUT rtc: mt6397: fix alarm register overwrite phy: mapphone-mdm6600: Fix uninitialized status value regression RDMA/bnxt_re: Avoid freeing MR resources if dereg fails RDMA/bnxt_re: Fix Send Work Entry state check while polling completions IB/hfi1: Don't cancel unused work item mtd: rawnand: stm32_fmc2: avoid to lock the CPU bus i2c: bcm2835: Store pointer to bus clock ASoC: SOF: imx8: fix memory allocation failure check on priv->pd_dev ASoC: soc-core: Set dpcm_playback / dpcm_capture ASoC: stm32: spdifrx: fix inconsistent lock state ASoC: stm32: spdifrx: fix race condition in irq handler ASoC: stm32: spdifrx: fix input pin state management pinctrl: lochnagar: select GPIOLIB netfilter: nft_flow_offload: fix underflow in flowtable reference counter ASoC: SOF: imx8: Fix dsp_box offset mtd: onenand: omap2: Pass correct flags for prep_dma_memcpy gpio: zynq: Fix for bug in zynq_gpio_restore_context API pinctrl: meson: Fix wrong shift value when get drive-strength selftests: loopback.sh: skip this test if the driver does not support iommu/vt-d: Unlink device if failed to add to group iommu: Remove device link to group on failure bpf: cgroup: prevent out-of-order release of cgroup bpf fs: move guard_bio_eod() after bio_set_op_attrs scsi: mpt3sas: Fix double free in attach error handling gpio: Fix error message on out-of-range GPIO in lookup table PM / devfreq: tegra: Add COMMON_CLK dependency PCI: amlogic: Fix probed clock names drm/tegra: Fix ordering of cleanup code hsr: add hsr root debugfs directory hsr: rename debugfs file when interface name is changed hsr: reset network header when supervision frame is created s390/qeth: fix qdio teardown after early init error s390/qeth: fix false reporting of VNIC CHAR config failure s390/qeth: Fix vnicc_is_in_use if rx_bcast not set s390/qeth: vnicc Fix init to default s390/qeth: fix initialization on old HW cifs: Adjust indentation in smb2_open_file scsi: smartpqi: Update attribute name to `driver_version` MAINTAINERS: Append missed file to the database ath9k: use iowrite32 over __raw_writel can: j1939: fix address claim code example dt-bindings: reset: Fix brcmstb-reset example reset: brcmstb: Remove resource checks afs: Fix missing cell comparison in afs_test_super() perf vendor events s390: Remove name from L1D_RO_EXCL_WRITES description syscalls/x86: Wire up COMPAT_SYSCALL_DEFINE0 syscalls/x86: Use COMPAT_SYSCALL_DEFINE0 for IA32 (rt_)sigreturn syscalls/x86: Use the correct function type for sys_ni_syscall syscalls/x86: Fix function types in COND_SYSCALL hsr: fix slab-out-of-bounds Read in hsr_debugfs_rename() btrfs: simplify inode locking for RWF_NOWAIT netfilter: nf_tables_offload: release flow_rule on error from commit path netfilter: nft_meta: use 64-bit time arithmetic ASoC: dt-bindings: mt8183: add missing update ASoC: simple_card_utils.h: Add missing include ASoC: fsl_esai: Add spin lock to protect reset, stop and start ASoC: SOF: Intel: Broadwell: clarify mutual exclusion with legacy driver ASoC: core: Fix compile warning with CONFIG_DEBUG_FS=n ASoC: rsnd: fix DALIGN register for SSIU RDMA/hns: Prevent undefined behavior in hns_roce_set_user_sq_size() RDMA/hns: remove a redundant le16_to_cpu RDMA/hns: Modify return value of restrack functions RDMA/counter: Prevent QP counter manual binding in auto mode RDMA/siw: Fix port number endianness in a debug message RDMA/hns: Fix build error again RDMA/hns: Release qp resources when failed to destroy qp xprtrdma: Add unique trace points for posting Local Invalidate WRs xprtrdma: Connection becomes unstable after a reconnect xprtrdma: Fix MR list handling xprtrdma: Close window between waking RPC senders and posting Receives RDMA/hns: Fix to support 64K page for srq RDMA/hns: Bugfix for qpc/cqc timer configuration rdma: Remove nes ABI header RDMA/mlx5: Return proper error value RDMA/srpt: Report the SCSI residual to the initiator uaccess: Add non-pagefault user-space write function bpf: Make use of probe_user_write in probe write helper bpf: skmsg, fix potential psock NULL pointer dereference bpf: Support pre-2.25-binutils objcopy for vmlinux BTF libbpf: Fix Makefile' libbpf symbol mismatch diagnostic afs: Fix use-after-loss-of-ref afs: Fix afs_lookup() to not clobber the version on a new dentry keys: Fix request_key() cache scsi: enclosure: Fix stale device oops with hot replug scsi: sd: Clear sdkp->protection_type if disk is reformatted without PI platform/mellanox: fix potential deadlock in the tmfifo driver platform/x86: asus-wmi: Fix keyboard brightness cannot be set to 0 platform/x86: GPD pocket fan: Use default values when wrong modparams are given asm-generic/nds32: don't redefine cacheflush primitives Documentation/ABI: Fix documentation inconsistency for mlxreg-io sysfs interfaces Documentation/ABI: Add missed attribute for mlxreg-io sysfs interfaces xprtrdma: Fix create_qp crash on device unload xprtrdma: Fix completion wait during device removal xprtrdma: Fix oops in Receive handler after device removal dm: add dm-clone to the documentation index scsi: ufs: Give an unique ID to each ufs-bsg crypto: cavium/nitrox - fix firmware assignment to AE cores crypto: hisilicon - select NEED_SG_DMA_LENGTH in qm Kconfig crypto: arm64/aes-neonbs - add return value of skcipher_walk_done() in __xts_crypt() crypto: virtio - implement missing support for output IVs crypto: algif_skcipher - Use chunksize instead of blocksize crypto: geode-aes - convert to skcipher API and make thread-safe NFSv2: Fix a typo in encode_sattr() nfsd: Fix cld_net->cn_tfm initialization nfsd: v4 support requires CRYPTO_SHA256 NFSv4.x: Handle bad/dead sessions correctly in nfs41_sequence_process() NFSv4.x: Drop the slot if nfs4_delegreturn_prepare waits for layoutreturn iio: imu: st_lsm6dsx: fix gyro gain definitions for LSM9DS1 iio: imu: adis16480: assign bias value only if operation succeeded mei: fix modalias documentation clk: meson: axg-audio: fix regmap last register clk: samsung: exynos5420: Preserve CPU clocks configuration during suspend/resume clk: Fix memory leak in clk_unregister() dmaengine: dw: platform: Mark 'hclk' clock optional clk: imx: pll14xx: Fix quick switch of S/K parameter rsi: fix potential null dereference in rsi_probe() affs: fix a memory leak in affs_remount pinctl: ti: iodelay: fix error checking on pinctrl_count_index_with_args call pinctrl: sh-pfc: Fix PINMUX_IPSR_PHYS() to set GPSR pinctrl: sh-pfc: Do not use platform_get_irq() to count interrupts pinctrl: lewisburg: Update pin list according to v1.1v6 PCI: pciehp: Do not disable interrupt twice on suspend Revert "drm/virtio: switch virtio_gpu_wait_ioctl() to gem helper." drm/amdgpu: cleanup creating BOs at fixed location (v2) drm/amdgpu/discovery: reserve discovery data at the top of VRAM scsi: sd: enable compat ioctls for sed-opal arm64: dts: apq8096-db820c: Increase load on l21 for SDCARD gfs2: add compat_ioctl support af_unix: add compat_ioctl support compat_ioctl: handle SIOCOUTQNSD PCI: aardvark: Use LTSSM state to build link training flag PCI: aardvark: Fix PCI_EXP_RTCTL register configuration PCI: dwc: Fix find_next_bit() usage PCI: Fix missing bridge dma_ranges resource list cleanup PCI/PM: Clear PCIe PME Status even for legacy power management tools: PCI: Fix fd leakage PCI/PTM: Remove spurious "d" from granularity message powerpc/powernv: Disable native PCIe port management MIPS: PCI: remember nasid changed by set interrupt affinity MIPS: Loongson: Fix return value of loongson_hwmon_init MIPS: SGI-IP27: Fix crash, when CPUs are disabled via nr_cpus parameter tty: serial: imx: use the sg count from dma_map_sg tty: serial: pch_uart: correct usage of dma_unmap_sg ARM: 8943/1: Fix topology setup in case of CPU hotplug for CONFIG_SCHED_MC media: ov6650: Fix incorrect use of JPEG colorspace media: ov6650: Fix some format attributes not under control media: ov6650: Fix .get_fmt() V4L2_SUBDEV_FORMAT_TRY support media: ov6650: Fix default format not applied on device probe media: rcar-vin: Fix incorrect return statement in rvin_try_format() media: hantro: h264: Fix the frame_num wraparound case media: v4l: cadence: Fix how unsued lanes are handled in 'csi2rx_start()' media: exynos4-is: Fix recursive locking in isp_video_release() media: coda: fix deadlock between decoder picture run and start command media: cedrus: Use correct H264 8x8 scaling list media: hantro: Do not reorder H264 scaling list media: aspeed-video: Fix memory leaks in aspeed_video_probe media: hantro: Set H264 FIELDPIC_FLAG_E flag correctly iommu/mediatek: Correct the flush_iotlb_all callback iommu/mediatek: Add a new tlb_lock for tlb_flush memory: mtk-smi: Add PM suspend and resume ops Revert "ubifs: Fix memory leak bug in alloc_ubifs_info() error path" ubifs: Fixed missed le64_to_cpu() in journal ubifs: do_kill_orphans: Fix a memory leak bug spi: sprd: Fix the incorrect SPI register mtd: spi-nor: fix silent truncation in spi_nor_read() mtd: spi-nor: fix silent truncation in spi_nor_read_raw() spi: pxa2xx: Set controller->max_transfer_size in dma mode spi: atmel: fix handling of cs_change set on non-last xfer spi: rspi: Use platform_get_irq_byname_optional() for optional irqs spi: lpspi: fix memory leak in fsl_lpspi_probe iwlwifi: mvm: consider ieee80211 station max amsdu value rtlwifi: Remove unnecessary NULL check in rtl_regd_init iwlwifi: mvm: fix support for single antenna diversity sch_cake: Add missing NLA policy entry TCA_CAKE_SPLIT_GSO f2fs: fix potential overflow NFSD fixing possible null pointer derefering in copy offload rtc: msm6242: Fix reading of 10-hour digit rtc: brcmstb-waketimer: add missed clk_disable_unprepare rtc: bd70528: Add MODULE ALIAS to autoload module gpio: mpc8xxx: Add platform device to gpiochip->parent scsi: libcxgbi: fix NULL pointer dereference in cxgbi_device_destroy() scsi: target/iblock: Fix protection error with blocks greater than 512B selftests: firmware: Fix it to do root uid check and skip rseq/selftests: Turn off timeout setting riscv: export flush_icache_all to modules mips: cacheinfo: report shared CPU map mips: Fix gettimeofday() in the vdso library tomoyo: Suppress RCU warning at list_for_each_entry_rcu(). MIPS: Prevent link failure with kcov instrumentation drm/arm/mali: make malidp_mw_connector_helper_funcs static rxrpc: Unlock new call in rxrpc_new_incoming_call() rather than the caller rxrpc: Don't take call->user_mutex in rxrpc_new_incoming_call() rxrpc: Fix missing security check on incoming calls dmaengine: k3dma: Avoid null pointer traversal s390/qeth: lock the card while changing its hsuid ioat: ioat_alloc_ring() failure handling. drm/amdgpu: enable gfxoff for raven1 refresh media: intel-ipu3: Align struct ipu3_uapi_awb_fr_config_s to 32 bytes kbuild/deb-pkg: annotate libelf-dev dependency as :native hexagon: parenthesize registers in asm predicates hexagon: work around compiler crash ocfs2: call journal flush to mark journal as empty after journal recovery when mount Linux 5.4.13 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I90734cd9d80f000e05a8109a529916ae641cdede |
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Stanislav Fomichev
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c8b4a8e3b6 |
bpf: Support pre-2.25-binutils objcopy for vmlinux BTF
commit |
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Sami Tolvanen
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ae14b5c962 |
ANDROID: init: ensure initcall ordering with LTO
With LTO, the compiler doesn't necessarily obey link order for initcalls, and the initcall variables need to be globally unique to avoid naming collisions. In order to preserve the intended order, this change moves each initcall variable into its own section and generates a linker script (in scripts/link-vmlinux.sh) to define the correct order for these sections. We also add a __COUNTER__ prefix to the name, so we can retain the order of initcalls within each compilation unit, and __LINE__ to help ensure uniqueness. Bug: 145210207 Change-Id: I602038783853497790c5a2941343c546e380c525 Signed-off-by: Sami Tolvanen <samitolvanen@google.com> |
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Sami Tolvanen
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d671af5fd7 |
ANDROID: kbuild: fix dynamic ftrace with clang LTO
With CONFIG_LTO_CLANG enabled, LLVM IR won't be compiled into object files until modpost_link. This change postpones calls to recordmcount until after this step. In order to exclude ftrace_process_locs from inspection, we add a new code section .text..ftrace, which we tell recordmcount to ignore, and a __norecordmcount attribute for moving functions to this section. Bug: 145210207 Change-Id: Ib77f7c431fce54243c46d584b55761ed2342965c Signed-off-by: Sami Tolvanen <samitolvanen@google.com> |
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Sami Tolvanen
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2e39b40dd2 |
ANDROID: kbuild: add support for Clang LTO
This change adds the configuration option CONFIG_LTO_CLANG, and build system support for Clang's Link Time Optimization (LTO). In preparation for LTO support with other compilers, potentially common parts of the changes are gated behind CONFIG_LTO instead. With -flto, instead of object files, Clang produces LLVM bitcode, which is compiled into a native object at link time, allowing the final binary to be optimized globally. For more details, see: https://llvm.org/docs/LinkTimeOptimization.html While the kernel normally uses GNU ld for linking, LLVM supports LTO only with LLD or GNU gold linkers. This change assumes LLD is used. Bug: 145210207 Change-Id: If1164ff33d073358ee7d4bba84cbb06c349c4a88 Signed-off-by: Sami Tolvanen <samitolvanen@google.com> |
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Linus Torvalds
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d7b0827f28 |
Merge tag 'kbuild-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- add modpost warn exported symbols marked as 'static' because 'static'
and EXPORT_SYMBOL is an odd combination
- break the build early if gold linker is used
- optimize the Bison rule to produce .c and .h files by a single
pattern rule
- handle PREEMPT_RT in the module vermagic and UTS_VERSION
- warn CONFIG options leaked to the user-space except existing ones
- make single targets work properly
- rebuild modules when module linker scripts are updated
- split the module final link stage into scripts/Makefile.modfinal
- fix the missed error code in merge_config.sh
- improve the error message displayed on the attempt of the O= build in
unclean source tree
- remove 'clean-dirs' syntax
- disable -Wimplicit-fallthrough warning for Clang
- add CONFIG_CC_OPTIMIZE_FOR_SIZE_O3 for ARC
- remove ARCH_{CPP,A,C}FLAGS variables
- add $(BASH) to run bash scripts
- change *CFLAGS_<basetarget>.o to take the relative path to $(obj)
instead of the basename
- stop suppressing Clang's -Wunused-function warnings when W=1
- fix linux/export.h to avoid genksyms calculating CRC of trimmed
exported symbols
- misc cleanups
* tag 'kbuild-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (63 commits)
genksyms: convert to SPDX License Identifier for lex.l and parse.y
modpost: use __section in the output to *.mod.c
modpost: use MODULE_INFO() for __module_depends
export.h, genksyms: do not make genksyms calculate CRC of trimmed symbols
export.h: remove defined(__KERNEL__), which is no longer needed
kbuild: allow Clang to find unused static inline functions for W=1 build
kbuild: rename KBUILD_ENABLE_EXTRA_GCC_CHECKS to KBUILD_EXTRA_WARN
kbuild: refactor scripts/Makefile.extrawarn
merge_config.sh: ignore unwanted grep errors
kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj)
modpost: add NOFAIL to strndup
modpost: add guid_t type definition
kbuild: add $(BASH) to run scripts with bash-extension
kbuild: remove ARCH_{CPP,A,C}FLAGS
kbuild,arc: add CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3 for ARC
kbuild: Do not enable -Wimplicit-fallthrough for clang for now
kbuild: clean up subdir-ymn calculation in Makefile.clean
kbuild: remove unneeded '+' marker from cmd_clean
kbuild: remove clean-dirs syntax
kbuild: check clean srctree even earlier
...
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Andrii Nakryiko
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618916a4bf |
kbuild: replace BASH-specific ${@:2} with shift and ${@}
${@:2} is BASH-specific extension, which makes link-vmlinux.sh rely on
BASH. Use shift and ${@} instead to fix this issue.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes:
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Ilya Leoshkevich
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fdf3703766 |
btf: do not use CONFIG_OUTPUT_FORMAT
Building s390 kernel with CONFIG_DEBUG_INFO_BTF fails, because
CONFIG_OUTPUT_FORMAT is not defined. As a matter of fact, this variable
appears to be x86-only, so other arches might be affected as well.
Fix by obtaining this value from objdump output, just like it's already
done for bin_arch. The exact objdump invocation is "inspired" by
arch/powerpc/boot/wrapper.
Also, use LANG=C for the existing bin_arch objdump invocation to avoid
potential build issues on systems with non-English locale.
Fixes:
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Kees Cook
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8959e39272 |
kbuild: Parameterize kallsyms generation and correct reporting
When kallsyms generation happens, temporary vmlinux outputs are linked but the quiet make output didn't report it, giving the impression that the prior command is taking longer than expected. Instead, report the linking step explicitly. While at it, this consolidates the repeated "kallsyms generation step" into a single function and removes the existing copy/pasting. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> |
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Jakub Kicinski
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708852dcac |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:
====================
The following pull-request contains BPF updates for your *net-next* tree.
There is a small merge conflict in libbpf (Cc Andrii so he's in the loop
as well):
for (i = 1; i <= btf__get_nr_types(btf); i++) {
t = (struct btf_type *)btf__type_by_id(btf, i);
if (!has_datasec && btf_is_var(t)) {
/* replace VAR with INT */
t->info = BTF_INFO_ENC(BTF_KIND_INT, 0, 0);
<<<<<<< HEAD
/*
* using size = 1 is the safest choice, 4 will be too
* big and cause kernel BTF validation failure if
* original variable took less than 4 bytes
*/
t->size = 1;
*(int *)(t+1) = BTF_INT_ENC(0, 0, 8);
} else if (!has_datasec && kind == BTF_KIND_DATASEC) {
=======
t->size = sizeof(int);
*(int *)(t + 1) = BTF_INT_ENC(0, 0, 32);
} else if (!has_datasec && btf_is_datasec(t)) {
>>>>>>>
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Andrii Nakryiko
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7fd785685e |
btf: rename /sys/kernel/btf/kernel into /sys/kernel/btf/vmlinux
Expose kernel's BTF under the name vmlinux to be more uniform with using
kernel module names as file names in the future.
Fixes:
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Andrii Nakryiko
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341dfcf8d7 |
btf: expose BTF info through sysfs
Make .BTF section allocated and expose its contents through sysfs.
/sys/kernel/btf directory is created to contain all the BTFs present
inside kernel. Currently there is only kernel's main BTF, represented as
/sys/kernel/btf/kernel file. Once kernel modules' BTFs are supported,
each module will expose its BTF as /sys/kernel/btf/<module-name> file.
Current approach relies on a few pieces coming together:
1. pahole is used to take almost final vmlinux image (modulo .BTF and
kallsyms) and generate .BTF section by converting DWARF info into
BTF. This section is not allocated and not mapped to any segment,
though, so is not yet accessible from inside kernel at runtime.
2. objcopy dumps .BTF contents into binary file and subsequently
convert binary file into linkable object file with automatically
generated symbols _binary__btf_kernel_bin_start and
_binary__btf_kernel_bin_end, pointing to start and end, respectively,
of BTF raw data.
3. final vmlinux image is generated by linking this object file (and
kallsyms, if necessary). sysfs_btf.c then creates
/sys/kernel/btf/kernel file and exposes embedded BTF contents through
it. This allows, e.g., libbpf and bpftool access BTF info at
well-known location, without resorting to searching for vmlinux image
on disk (location of which is not standardized and vmlinux image
might not be even available in some scenarios, e.g., inside qemu
during testing).
Alternative approach using .incbin assembler directive to embed BTF
contents directly was attempted but didn't work, because sysfs_proc.o is
not re-compiled during link-vmlinux.sh stage. This is required, though,
to update embedded BTF data (initially empty data is embedded, then
pahole generates BTF info and we need to regenerate sysfs_btf.o with
updated contents, but it's too late at that point).
If BTF couldn't be generated due to missing or too old pahole,
sysfs_btf.c handles that gracefully by detecting that
_binary__btf_kernel_bin_start (weak symbol) is 0 and not creating
/sys/kernel/btf at all.
v2->v3:
- added Documentation/ABI/testing/sysfs-kernel-btf (Greg K-H);
- created proper kobject (btf_kobj) for btf directory (Greg K-H);
- undo v2 change of reusing vmlinux, as it causes extra kallsyms pass
due to initially missing __binary__btf_kernel_bin_{start/end} symbols;
v1->v2:
- allow kallsyms stage to re-use vmlinux generated by gen_btf();
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
|
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Masahiro Yamada
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a721588d94 |
kbuild: modpost: do not parse unnecessary rules for vmlinux modpost
Since commit |
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Linus Torvalds
|
2646719a48 |
Merge tag 'kbuild-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada: - allow users to invoke 'make' out of the source tree - refactor scripts/mkmakefile - deprecate KBUILD_SRC, which was used to track the source tree location for O= build. - fix recordmcount.pl in case objdump output is localized - turn unresolved symbols in external modules to errors from warnings by default; pass KBUILD_MODPOST_WARN=1 to get them back to warnings - generate modules.builtin.modinfo to collect .modinfo data from built-in modules - misc Makefile cleanups * tag 'kbuild-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (21 commits) .gitignore: add more all*.config patterns moduleparam: Save information about built-in modules in separate file Remove MODULE_ALIAS() calls that take undefined macro .gitignore: add leading and trailing slashes to generated directories scripts/tags.sh: fix direct execution of scripts/tags.sh scripts: override locale from environment when running recordmcount.pl samples: kobject: allow CONFIG_SAMPLE_KOBJECT to become y samples: seccomp: turn CONFIG_SAMPLE_SECCOMP into a bool option kbuild: move Documentation to vmlinux-alldirs kbuild: move samples/ to KBUILD_VMLINUX_OBJS modpost: make KBUILD_MODPOST_WARN also configurable for external modules kbuild: check arch/$(SRCARCH)/include/generated before out-of-tree build kbuild: remove unneeded dependency for include/config/kernel.release memory: squash drivers/memory/Makefile.asm-offsets kbuild: use $(srctree) instead of KBUILD_SRC to check out-of-tree build kbuild: mkmakefile: generate a simple wrapper of top Makefile kbuild: mkmakefile: do not check the generated Makefile marker kbuild: allow Kbuild to start from any directory kbuild: pass $(MAKECMDGOALS) to sub-make as is kbuild: fix warning "overriding recipe for target 'Makefile'" ... |
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Alexey Gladkov
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898490c010 |
moduleparam: Save information about built-in modules in separate file
Problem: When a kernel module is compiled as a separate module, some important information about the kernel module is available via .modinfo section of the module. In contrast, when the kernel module is compiled into the kernel, that information is not available. Information about built-in modules is necessary in the following cases: 1. When it is necessary to find out what additional parameters can be passed to the kernel at boot time. 2. When you need to know which module names and their aliases are in the kernel. This is very useful for creating an initrd image. Proposal: The proposed patch does not remove .modinfo section with module information from the vmlinux at the build time and saves it into a separate file after kernel linking. So, the kernel does not increase in size and no additional information remains in it. Information is stored in the same format as in the separate modules (null-terminated string array). Because the .modinfo section is already exported with a separate modules, we are not creating a new API. It can be easily read in the userspace: $ tr '\0' '\n' < modules.builtin.modinfo ext4.softdep=pre: crc32c ext4.license=GPL ext4.description=Fourth Extended Filesystem ext4.author=Remy Card, Stephen Tweedie, Andrew Morton, Andreas Dilger, Theodore Ts'o and others ext4.alias=fs-ext4 ext4.alias=ext3 ext4.alias=fs-ext3 ext4.alias=ext2 ext4.alias=fs-ext2 md_mod.alias=block-major-9-* md_mod.alias=md md_mod.description=MD RAID framework md_mod.license=GPL md_mod.parmtype=create_on_open:bool md_mod.parmtype=start_dirty_degraded:int ... Co-Developed-by: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org> Signed-off-by: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org> Signed-off-by: Alexey Gladkov <gladkov.alexey@gmail.com> Acked-by: Jessica Yu <jeyu@kernel.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> |
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Andrii Nakryiko
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581b31c36c |
kbuild: tolerate missing pahole when generating BTF
When BTF generation is enabled through CONFIG_DEBUG_INFO_BTF,
scripts/link-vmlinux.sh detects if pahole version is too old and
gracefully continues build process, skipping BTF generation build step.
But if pahole is not available, build will still fail. This patch adds
check for whether pahole exists at all and bails out gracefully, if not.
Cc: Alexei Starovoitov <ast@fb.com>
Reported-by: Yonghong Song <yhs@fb.com>
Fixes:
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Andrii Nakryiko
|
68e5ab1fc8 |
kbuild: handle old pahole more gracefully when generating BTF
When CONFIG_DEBUG_INFO_BTF is enabled but available version of pahole is too
old to support BTF generation, build script is supposed to emit warning and
proceed with the build. Due to using exit instead of return from BASH function,
existing handling code prematurely exits exit code 0, not completing some of
the build steps. This patch fixes issue by correctly returning just from
gen_btf() function only.
Fixes:
|
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Andrii Nakryiko
|
e83b9f5544 |
kbuild: add ability to generate BTF type info for vmlinux
This patch adds new config option to trigger generation of BTF type information from DWARF debuginfo for vmlinux and kernel modules through pahole, which in turn relies on libbpf for btf_dedup() algorithm. The intent is to record compact type information of all types used inside kernel, including all the structs/unions/typedefs/etc. This enables BPF's compile-once-run-everywhere ([0]) approach, in which tracing programs that are inspecting kernel's internal data (e.g., struct task_struct) can be compiled on a system running some kernel version, but would be possible to run on other kernel versions (and configurations) without recompilation, even if the layout of structs changed and/or some of the fields were added, removed, or renamed. This is only possible if BPF loader can get kernel type info to adjust all the offsets correctly. This patch is a first time in this direction, making sure that BTF type info is part of Linux kernel image in non-loadable ELF section. BTF deduplication ([1]) algorithm typically provides 100x savings compared to DWARF data, so resulting .BTF section is not big as is typically about 2MB in size. [0] http://vger.kernel.org/lpc-bpf2018.html#session-2 [1] https://facebookmicrosites.github.io/bpf/blog/2018/11/14/btf-enhancement.html Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Yonghong Song <yhs@fb.com> Cc: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Andrii Nakryiko <andriin@fb.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> |
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Masahiro Yamada
|
94cf8acc38 |
kbuild: source include/config/auto.conf instead of ${KCONFIG_CONFIG}
As commit
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Masahiro Yamada
|
d151e9719f |
kbuild: merge KBUILD_VMLINUX_{INIT,MAIN} into KBUILD_VMLINUX_OBJS
The top Makefile does not need to export KBUILD_VMLINUX_INIT and KBUILD_VMLINUX_MAIN separately. Put every built-in.a into KBUILD_VMLINUX_OBJS. The order of $(head-y), $(init-y), $(core-y), ... is still retained. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> |
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Masahiro Yamada
|
dee9495303 |
kbuild: remove top-level built-in.a
The symbol table in the final archive is unneeded; the linker does not require the symbol table after the --whole-archive option. Every object file in the archive is included in the link anyway. Pass thin archives from subdirectories directly to the linker, and remove the final archiving step. Fix up the document and comments as well. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Nicholas Piggin <npiggin@gmail.com> |
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Masahiro Yamada
|
d503ac531a |
kbuild: rename LDFLAGS to KBUILD_LDFLAGS
Commit |
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Masahiro Yamada
|
534c9f2ec4 |
kallsyms: remove symbol prefix support
CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX was selected by BLACKFIN, METAG. They were removed by commit |
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Michael Forney
|
a670b0b4ae |
kbuild: Use ls(1) instead of stat(1) to obtain file size
stat(1) is not standardized and different implementations have their own
(conflicting) flags for querying the size of a file.
ls(1) provides the same information (value of st.st_size) in the 5th
column, except when the file is a character or block device. This output
is standardized[0]. The -n option turns on -l, which writes lines
formatted like
"%s %u %s %s %u %s %s\n", <file mode>, <number of links>,
<owner name>, <group name>, <size>, <date and time>,
<pathname>
but instead of writing the <owner name> and <group name>, it writes the
numeric owner and group IDs (this avoids /etc/passwd and /etc/group
lookups as well as potential field splitting issues).
The <size> field is specified as "the value that would be returned for
the file in the st_size field of struct stat".
To avoid duplicating logic in several locations in the tree, create
scripts/file-size.sh and update callers to use that instead of stat(1).
[0] http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ls.html#tag_20_73_10
Signed-off-by: Michael Forney <forney@google.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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Nicholas Piggin
|
f49821ee32 |
kbuild: rename built-in.o to built-in.a
Incremental linking is gone, so rename built-in.o to built-in.a, which is the usual extension for archive files. This patch does two things, first is a simple search/replace: git grep -l 'built-in\.o' | xargs sed -i 's/built-in\.o/built-in\.a/g' The second is to invert nesting of nested text manipulations to avoid filtering built-in.a out from libs-y2: -libs-y2 := $(filter-out %.a, $(patsubst %/, %/built-in.a, $(libs-y))) +libs-y2 := $(patsubst %/, %/built-in.a, $(filter-out %.a, $(libs-y))) Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> |
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Nicholas Piggin
|
6358d6e8b9 |
kbuild: remove incremental linking option
This removes the old `ld -r` incremental link option, which has not been selected by any architecture since June 2017. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> |
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Cao jin
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a7b151fffb |
kbuild: drop superfluous GCC_PLUGINS_CFLAGS assignment
GCC_PLUGINS_CFLAGS is already in the environment, so it is superfluous to add it in commandline of final build of init/. Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> |
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Linus Torvalds
|
09bd7c75e5 |
Merge tag 'kbuild-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
"One of the most remarkable improvements in this cycle is, Kbuild is
now able to cache the result of shell commands. Some variables are
expensive to compute, for example, $(call cc-option,...) invokes the
compiler. It is not efficient to redo this computation every time,
even when we are not actually building anything. Kbuild creates a
hidden file ".cache.mk" that contains invoked shell commands and their
results. The speed-up should be noticeable.
Summary:
- Fix arch build issues (hexagon, sh)
- Clean up various Makefiles and scripts
- Fix wrong usage of {CFLAGS,LDFLAGS}_MODULE in arch Makefiles
- Cache variables that are expensive to compute
- Improve cc-ldopton and ld-option for Clang
- Optimize output directory creation"
* tag 'kbuild-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (30 commits)
kbuild: move coccicheck help from scripts/Makefile.help to top Makefile
sh: decompressor: add shipped files to .gitignore
frv: .gitignore: ignore vmlinux.lds
selinux: remove unnecessary assignment to subdir-
kbuild: specify FORCE in Makefile.headersinst as .PHONY target
kbuild: remove redundant mkdir from ./Kbuild
kbuild: optimize object directory creation for incremental build
kbuild: create object directories simpler and faster
kbuild: filter-out PHONY targets from "targets"
kbuild: remove redundant $(wildcard ...) for cmd_files calculation
kbuild: create directory for make cache only when necessary
sh: select KBUILD_DEFCONFIG depending on ARCH
kbuild: fix linker feature test macros when cross compiling with Clang
kbuild: shrink .cache.mk when it exceeds 1000 lines
kbuild: do not call cc-option before KBUILD_CFLAGS initialization
kbuild: Cache a few more calls to the compiler
kbuild: Add a cache for generated variables
kbuild: add forward declaration of default target to Makefile.asm-generic
kbuild: remove KBUILD_SUBDIR_ASFLAGS and KBUILD_SUBDIR_CCFLAGS
hexagon/kbuild: replace CFLAGS_MODULE with KBUILD_CFLAGS_MODULE
...
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Greg Kroah-Hartman
|
b24413180f |
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Masahiro Yamada
|
278ae60403 |
kbuild: link-vmlinux.sh: simplify .version increment
Since commit |
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Nicholas Piggin
|
3a166fc2d4 |
kbuild: handle libs-y archives separately from built-in.o archives
The thin archives build currently puts all lib.a and built-in.o files together and links them with --whole-archive. This works because thin archives can recursively refer to thin archives. However some architectures include libgcc.a, which may not be a thin archive, or it may not be constructed with the "P" option, in which case its contents do not get linked correctly. So don't pull .a libs into the root built-in.o archive. These libs should already have symbol tables and indexes built, so they can be direct linker inputs. Move them out of the --whole-archive option, which restore the conditional linking behaviour of lib.a to thin archives builds. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> |
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Nicholas Piggin
|
9a6cfca4f4 |
kbuild: thin archives use P option to ar
The P option makes ar do full path name matching and can prevent ar from discarding files with duplicate names in some cases of creating thin archives from thin archives. The sh architecture in particular loses some object files from its kernel/cpu/sh*/ directories without this option. This could be a bug in binutils ar, but the P option should not cause any negative effects so it is safe to use to work around this with. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> |
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Nicholas Piggin
|
1328a1ae0e |
kbuild: thin archives final link close --whole-archives option
Close the --whole-archives option with --no-whole-archive. Some architectures end up including additional .o and files multiple times after this, and they get duplicate symbols when they are brought under the --whole-archives option. This matches more closely with the incremental final link. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> |
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Nicholas Piggin
|
abac4c8973 |
kbuild: minor improvement for thin archives build
The root built-in.o archive is currently generated before all object files are built for the final link, due to final build of init/ after version update. In practice it seems like it doesn't matter because the archive symbol table does not change, but it is more logical to create the final archive as the last step. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com> |
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Nicholas Piggin
|
7e2b37c971 |
kbuild: kallsyms allow 3-pass generation if symbols size has changed
kallsyms generation is not foolproof, due to some linkers adding symbols (e.g., branch trampolines) when a binary size changes. Have it attempt a 3rd pass automatically if the kallsyms size changes in the 2nd pass. This allows powerpc64 allyesconfig to build without adding another pass when it's not required. This can be solved other ways by directing the linker not to add labels on branch stubs, or to move kallsyms near the end of the image. The former is undesirable for debugging/tracing, and the latter is a more significant change that requires more testing and review. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michal Marek <mmarek@suse.com> |
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Stephen Rothwell
|
a5967db9af |
kbuild: allow architectures to use thin archives instead of ld -r
ld -r is an incremental link used to create built-in.o files in build
subdirectories. It produces relocatable object files containing all
its input files, and these are are then pulled together and relocated
in the final link. Aside from the bloat, this constrains the final
link relocations, which has bitten large powerpc builds with
unresolvable relocations in the final link.
Alan Modra has recommended the kernel use thin archives for linking.
This is an alternative and means that the linker has more information
available to it when it links the kernel.
This patch enables a config option architectures can select, which
causes all built-in.o files to be built as thin archives. built-in.o
files in subdirectories do not get symbol table or index attached,
which improves speed and size. The final link pass creates a
built-in.o archive in the root output directory which includes the
symbol table and index. The linker then uses takes this file to link.
The --whole-archive linker option is required, because the linker now
has visibility to every individual object file, and it will otherwise
just completely avoid including those without external references
(consider a file with EXPORT_SYMBOL or initcall or hardware exceptions
as its only entry points). The traditional built works "by luck" as
built-in.o files are large enough that they're going to get external
references. However this optimisation is unpredictable for the kernel
(due to above external references), ineffective at culling unused, and
costly because the .o files have to be searched for references.
Superior alternatives for link-time culling should be used instead.
Build characteristics for inclink vs thinarc, on a small powerpc64le
pseries VM with a modest .config:
inclink thinarc
sizes
vmlinux 15 618 680 15 625 028
sum of all built-in.o 56 091 808 1 054 334
sum excluding root built-in.o 151 430
find -name built-in.o | xargs rm ; time make vmlinux
real 22.772s 21.143s
user 13.280s 13.430s
sys 4.310s 2.750s
- Final kernel pulled in only about 6K more, which shows how
ineffective the object file culling is.
- Build performance looks improved due to less pagecache activity.
On IO constrained systems it could be a bigger win.
- Build size saving is significant.
Side note, the toochain understands archives, so there's some tricks,
$ ar t built-in.o # list all files you linked with
$ size built-in.o # and their sizes
$ objdump -d built-in.o # disassembly (unrelocated) with filenames
Implementation by sfr, minor tweaks by npiggin.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
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Emese Revfy
|
6b90bd4ba4 |
GCC plugin infrastructure
This patch allows to build the whole kernel with GCC plugins. It was ported from
grsecurity/PaX. The infrastructure supports building out-of-tree modules and
building in a separate directory. Cross-compilation is supported too.
Currently the x86, arm, arm64 and uml architectures enable plugins.
The directory of the gcc plugins is scripts/gcc-plugins. You can use a file or a directory
there. The plugins compile with these options:
* -fno-rtti: gcc is compiled with this option so the plugins must use it too
* -fno-exceptions: this is inherited from gcc too
* -fasynchronous-unwind-tables: this is inherited from gcc too
* -ggdb: it is useful for debugging a plugin (better backtrace on internal
errors)
* -Wno-narrowing: to suppress warnings from gcc headers (ipa-utils.h)
* -Wno-unused-variable: to suppress warnings from gcc headers (gcc_version
variable, plugin-version.h)
The infrastructure introduces a new Makefile target called gcc-plugins. It
supports all gcc versions from 4.5 to 6.0. The scripts/gcc-plugin.sh script
chooses the proper host compiler (gcc-4.7 can be built by either gcc or g++).
This script also checks the availability of the included headers in
scripts/gcc-plugins/gcc-common.h.
The gcc-common.h header contains frequently included headers for GCC plugins
and it has a compatibility layer for the supported gcc versions.
The gcc-generate-*-pass.h headers automatically generate the registration
structures for GIMPLE, SIMPLE_IPA, IPA and RTL passes.
Note that 'make clean' keeps the *.so files (only the distclean or mrproper
targets clean all) because they are needed for out-of-tree modules.
Based on work created by the PaX Team.
Signed-off-by: Emese Revfy <re.emese@gmail.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Michal Marek <mmarek@suse.com>
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Ard Biesheuvel
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d4ffe41819 |
ARM: 8552/1: kallsyms: remove special lower address limit for CONFIG_ARM
Now that we no longer emit .stubs symbols into a section VMA loaded at absolute address 0x1000, we can drop the ARM-specific override that sets a lower limit based on CONFIG_PAGE_OFFSET, below which symbols are filtered from the kallsyms output. Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Chris Brandt <chris.brandt@renesas.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> |
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Linus Torvalds
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2162b80fca |
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild updates from Michal Marek: - make dtbs_install fix - Error handling fix fixdep and link-vmlinux.sh - __UNIQUE_ID fix for clang - Fix for if_changed_* to suppress the "is up to date." message - The kernel is built with -Werror=incompatible-pointer-types * 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: kbuild: Add option to turn incompatible pointer check into error kbuild: suppress annoying "... is up to date." message kbuild: fixdep: Check fstat(2) return value scripts/link-vmlinux.sh: force error on kallsyms failure Kbuild: provide a __UNIQUE_ID for clang dtbsinstall: don't move target directory out of the way |
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Ard Biesheuvel
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2213e9a66b |
kallsyms: add support for relative offsets in kallsyms address table
Similar to how relative extables are implemented, it is possible to emit the kallsyms table in such a way that it contains offsets relative to some anchor point in the kernel image rather than absolute addresses. On 64-bit architectures, it cuts the size of the kallsyms address table in half, since offsets between kernel symbols can typically be expressed in 32 bits. This saves several hundreds of kilobytes of permanent .rodata on average. In addition, the kallsyms address table is no longer subject to dynamic relocation when CONFIG_RELOCATABLE is in effect, so the relocation work done after decompression now doesn't have to do relocation updates for all these values. This saves up to 24 bytes (i.e., the size of a ELF64 RELA relocation table entry) per value, which easily adds up to a couple of megabytes of uncompressed __init data on ppc64 or arm64. Even if these relocation entries typically compress well, the combined size reduction of 2.8 MB uncompressed for a ppc64_defconfig build (of which 2.4 MB is __init data) results in a ~500 KB space saving in the compressed image. Since it is useful for some architectures (like x86) to retain the ability to emit absolute values as well, this patch also adds support for capturing both absolute and relative values when KALLSYMS_ABSOLUTE_PERCPU is in effect, by emitting absolute per-cpu addresses as positive 32-bit values, and addresses relative to the lowest encountered relative symbol as negative values, which are subtracted from the runtime address of this base symbol to produce the actual address. Support for the above is enabled by default for all architectures except IA-64 and Tile-GX, whose symbols are too far apart to capture in this manner. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Kees Cook <keescook@chromium.org> Tested-by: Kees Cook <keescook@chromium.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Ingo Molnar <mingo@kernel.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Ard Biesheuvel
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4d5d5664c9 |
x86: kallsyms: disable absolute percpu symbols on !SMP
scripts/kallsyms.c has a special --absolute-percpu command line option which deals with the zero based per cpu offsets that are used when building for SMP on x86_64. This means that the option should only be passed in that case, so add a Kconfig symbol with the correct predicate, and use that instead. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Kees Cook <keescook@chromium.org> Tested-by: Kees Cook <keescook@chromium.org> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Ingo Molnar <mingo@kernel.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michal Marek <mmarek@suse.cz> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Ard Biesheuvel
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a043934207 |
scripts/link-vmlinux.sh: force error on kallsyms failure
Since the output of the invocation of scripts/kallsyms is piped directly into the assembler, error messages it emits are visible on stderr, but a non-zero return code is ignored, and the build simply proceeds in that case. However, the resulting kernel is most likely broken, and will crash at boot. So instead, capture the output of kallsyms in a separate .S file, and pass that to the assembler in a separate step. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Michal Marek <mmarek@suse.com> |
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Vegard Nossum
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a7df4716d1 |
um: link with -lpthread
Similarly to commit
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Lorenzo Colitti
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fb1770aa78 |
arch: um: fix error when linking vmlinux.
On gcc Ubuntu 4.8.4-2ubuntu1~14.04, linking vmlinux fails with: arch/um/os-Linux/built-in.o: In function `os_timer_create': /android/kernel/android/arch/um/os-Linux/time.c:51: undefined reference to `timer_create' arch/um/os-Linux/built-in.o: In function `os_timer_set_interval': /android/kernel/android/arch/um/os-Linux/time.c:84: undefined reference to `timer_settime' arch/um/os-Linux/built-in.o: In function `os_timer_remain': /android/kernel/android/arch/um/os-Linux/time.c:109: undefined reference to `timer_gettime' arch/um/os-Linux/built-in.o: In function `os_timer_one_shot': /android/kernel/android/arch/um/os-Linux/time.c:132: undefined reference to `timer_settime' arch/um/os-Linux/built-in.o: In function `os_timer_disable': /android/kernel/android/arch/um/os-Linux/time.c:145: undefined reference to `timer_settime' This is because -lrt appears in the generated link commandline after arch/um/os-Linux/built-in.o. Fix this by removing -lrt from arch/um/Makefile and adding it to the UM-specific section of scripts/link-vmlinux.sh. Signed-off-by: Lorenzo Colitti <lorenzo@google.com> Signed-off-by: Richard Weinberger <richard@nod.at> |
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Maxime Coquelin
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cc84753052 |
scripts: link-vmlinux: Don't pass page offset to kallsyms if XIP Kernel
When Kernel is executed in place from ROM, the symbol addresses can be lower than the page offset. Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> Tested-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Michal Marek <mmarek@suse.cz> |