Commit Graph

92 Commits

Author SHA1 Message Date
Nick Desaulniers
0065c70555 Revert "selinux: Relocate ss_initialized and selinux_enforcing to separate 4k"
This reverts commit d4807bd60d.

That out of tree patch causes the resulting kernel image to be too
large, causing ld.lld to error; likely due to the additional section and
alignment requirements.  Android and floral don't host virtual targets
and thus do not run at EL2 on arm64.

Bug: 63740206
Change-Id: I357bf4d5c7e29230746eacd51fef413acec06067
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: UtsavBalar1231 <utsavbalar1231@gmail.com>
2021-03-11 11:33:32 +05:30
Venkata Rao Kakani
0a7ac54ace Early Services: init: fs: synchronize Early Services with init
Add synchonization between early-init and android init.

Change-Id: I347645c648964252b80182eb4328859e4a94d7eb
Signed-off-by: Venkata Rao Kakani <vkakani@codeaurora.org>
2020-06-26 09:09:26 +05:30
Srinivasarao P
8241b06f7c Merge android-4.14.159 (f960b38) into msm-4.14
* refs/heads/tmp-f960b38:
  Linux 4.14.159
  of: unittest: fix memory leak in attach_node_and_children
  raid5: need to set STRIPE_HANDLE for batch head
  gpiolib: acpi: Add Terra Pad 1061 to the run_edge_events_on_boot_blacklist
  kernel/module.c: wakeup processes in module_wq on module unload
  gfs2: fix glock reference problem in gfs2_trans_remove_revoke
  net/mlx5e: Fix SFF 8472 eeprom length
  sunrpc: fix crash when cache_head become valid before update
  workqueue: Fix missing kfree(rescuer) in destroy_workqueue()
  blk-mq: make sure that line break can be printed
  mfd: rk808: Fix RK818 ID template
  ext4: fix a bug in ext4_wait_for_tail_page_commit
  mm/shmem.c: cast the type of unmap_start to u64
  firmware: qcom: scm: Ensure 'a0' status code is treated as signed
  ext4: work around deleting a file with i_nlink == 0 safely
  powerpc: Fix vDSO clock_getres()
  powerpc: Avoid clang warnings around setjmp and longjmp
  ath10k: fix fw crash by moving chip reset after napi disabled
  media: vimc: fix component match compare
  mlxsw: spectrum_router: Refresh nexthop neighbour when it becomes dead
  power: supply: cpcap-battery: Fix signed counter sample register
  x86/MCE/AMD: Carve out the MC4_MISC thresholding quirk
  x86/MCE/AMD: Turn off MC4_MISC thresholding on all family 0x15 models
  e100: Fix passing zero to 'PTR_ERR' warning in e100_load_ucode_wait
  drbd: Change drbd_request_detach_interruptible's return type to int
  scsi: lpfc: Correct code setting non existent bits in sli4 ABORT WQE
  scsi: lpfc: Cap NPIV vports to 256
  omap: pdata-quirks: remove openpandora quirks for mmc3 and wl1251
  phy: renesas: rcar-gen3-usb2: Fix sysfs interface of "role"
  iio: adis16480: Add debugfs_reg_access entry
  xhci: make sure interrupts are restored to correct state
  xhci: Fix memory leak in xhci_add_in_port()
  scsi: qla2xxx: Fix message indicating vectors used by driver
  scsi: qla2xxx: Always check the qla2x00_wait_for_hba_online() return value
  scsi: qla2xxx: Fix qla24xx_process_bidir_cmd()
  scsi: qla2xxx: Fix session lookup in qlt_abort_work()
  scsi: qla2xxx: Fix DMA unmap leak
  scsi: zfcp: trace channel log even for FCP command responses
  block: fix single range discard merge
  reiserfs: fix extended attributes on the root directory
  ext4: Fix credit estimate for final inode freeing
  quota: fix livelock in dquot_writeback_dquots
  ext2: check err when partial != NULL
  quota: Check that quota is not dirty before release
  video/hdmi: Fix AVI bar unpack
  powerpc/xive: Skip ioremap() of ESB pages for LSI interrupts
  powerpc: Allow flush_icache_range to work across ranges >4GB
  powerpc/xive: Prevent page fault issues in the machine crash handler
  powerpc: Allow 64bit VDSO __kernel_sync_dicache to work across ranges >4GB
  ppdev: fix PPGETTIME/PPSETTIME ioctls
  ARM: dts: omap3-tao3530: Fix incorrect MMC card detection GPIO polarity
  mmc: host: omap_hsmmc: add code for special init of wl1251 to get rid of pandora_wl1251_init_card
  pinctrl: samsung: Fix device node refcount leaks in S3C64xx wakeup controller init
  pinctrl: samsung: Fix device node refcount leaks in init code
  pinctrl: samsung: Fix device node refcount leaks in S3C24xx wakeup controller init
  pinctrl: samsung: Add of_node_put() before return in error path
  ACPI: PM: Avoid attaching ACPI PM domain to certain devices
  ACPI: bus: Fix NULL pointer check in acpi_bus_get_private_data()
  ACPI: OSL: only free map once in osl.c
  cpufreq: powernv: fix stack bloat and hard limit on number of CPUs
  PM / devfreq: Lock devfreq in trans_stat_show
  intel_th: pci: Add Tiger Lake CPU support
  intel_th: pci: Add Ice Lake CPU support
  intel_th: Fix a double put_device() in error path
  cpuidle: Do not unset the driver if it is there already
  media: cec.h: CEC_OP_REC_FLAG_ values were swapped
  media: radio: wl1273: fix interrupt masking on release
  media: bdisp: fix memleak on release
  s390/mm: properly clear _PAGE_NOEXEC bit when it is not supported
  ar5523: check NULL before memcpy() in ar5523_cmd()
  cgroup: pids: use atomic64_t for pids->limit
  blk-mq: avoid sysfs buffer overflow with too many CPU cores
  ASoC: Jack: Fix NULL pointer dereference in snd_soc_jack_report
  workqueue: Fix pwq ref leak in rescuer_thread()
  workqueue: Fix spurious sanity check failures in destroy_workqueue()
  dm zoned: reduce overhead of backing device checks
  hwrng: omap - Fix RNG wait loop timeout
  watchdog: aspeed: Fix clock behaviour for ast2600
  md/raid0: Fix an error message in raid0_make_request()
  ALSA: hda - Fix pending unsol events at shutdown
  ovl: relax WARN_ON() on rename to self
  lib: raid6: fix awk build warnings
  rtlwifi: rtl8192de: Fix missing enable interrupt flag
  rtlwifi: rtl8192de: Fix missing callback that tests for hw release of buffer
  rtlwifi: rtl8192de: Fix missing code to retrieve RX buffer address
  btrfs: record all roots for rename exchange on a subvol
  Btrfs: send, skip backreference walking for extents with many references
  btrfs: Remove btrfs_bio::flags member
  Btrfs: fix negative subv_writers counter and data space leak after buffered write
  btrfs: use refcount_inc_not_zero in kill_all_nodes
  btrfs: check page->mapping when loading free space cache
  usb: dwc3: ep0: Clear started flag on completion
  virtio-balloon: fix managed page counts when migrating pages between zones
  mtd: spear_smi: Fix Write Burst mode
  tpm: add check after commands attribs tab allocation
  usb: mon: Fix a deadlock in usbmon between mmap and read
  usb: core: urb: fix URB structure initialization function
  USB: adutux: fix interface sanity check
  USB: serial: io_edgeport: fix epic endpoint lookup
  USB: idmouse: fix interface sanity checks
  USB: atm: ueagle-atm: add missing endpoint check
  iio: humidity: hdc100x: fix IIO_HUMIDITYRELATIVE channel reporting
  ARM: dts: pandora-common: define wl1251 as child node of mmc3
  xhci: handle some XHCI_TRUST_TX_LENGTH quirks cases as default behaviour.
  xhci: Increase STS_HALT timeout in xhci_suspend()
  usb: xhci: only set D3hot for pci device
  staging: gigaset: add endpoint-type sanity check
  staging: gigaset: fix illegal free on probe errors
  staging: gigaset: fix general protection fault on probe
  staging: rtl8712: fix interface sanity check
  staging: rtl8188eu: fix interface sanity check
  usb: Allow USB device to be warm reset in suspended state
  USB: documentation: flags on usb-storage versus UAS
  USB: uas: heed CAPACITY_HEURISTICS
  USB: uas: honor flag to avoid CAPACITY16
  media: venus: remove invalid compat_ioctl32 handler
  scsi: qla2xxx: Fix driver unload hang
  usb: gadget: pch_udc: fix use after free
  usb: gadget: configfs: Fix missing spin_lock_init()
  appletalk: Set error code if register_snap_client failed
  appletalk: Fix potential NULL pointer dereference in unregister_snap_client
  KVM: x86: fix out-of-bounds write in KVM_GET_EMULATED_CPUID (CVE-2019-19332)
  ASoC: rsnd: fixup MIX kctrl registration
  binder: Handle start==NULL in binder_update_page_range()
  thermal: Fix deadlock in thermal thermal_zone_device_check
  iomap: Fix pipe page leakage during splicing
  RDMA/qib: Validate ->show()/store() callbacks before calling them
  spi: atmel: Fix CS high support
  crypto: user - fix memory leak in crypto_report
  crypto: ecdh - fix big endian bug in ECC library
  crypto: ccp - fix uninitialized list head
  crypto: af_alg - cast ki_complete ternary op to int
  crypto: crypto4xx - fix double-free in crypto4xx_destroy_sdr
  KVM: x86: fix presentation of TSX feature in ARCH_CAPABILITIES
  KVM: x86: do not modify masked bits of shared MSRs
  KVM: arm/arm64: vgic: Don't rely on the wrong pending table
  drm/i810: Prevent underflow in ioctl
  jbd2: Fix possible overflow in jbd2_log_space_left()
  kernfs: fix ino wrap-around detection
  can: slcan: Fix use-after-free Read in slcan_open
  tty: vt: keyboard: reject invalid keycodes
  CIFS: Fix SMB2 oplock break processing
  CIFS: Fix NULL-pointer dereference in smb2_push_mandatory_locks
  x86/PCI: Avoid AMD FCH XHCI USB PME# from D0 defect
  Input: Fix memory leak in psxpad_spi_probe
  coresight: etm4x: Fix input validation for sysfs.
  Input: goodix - add upside-down quirk for Teclast X89 tablet
  Input: synaptics-rmi4 - don't increment rmiaddr for SMBus transfers
  Input: synaptics-rmi4 - re-enable IRQs in f34v7_do_reflash
  Input: synaptics - switch another X1 Carbon 6 to RMI/SMbus
  ALSA: hda - Add mute led support for HP ProBook 645 G4
  ALSA: pcm: oss: Avoid potential buffer overflows
  ALSA: hda/realtek - Dell headphone has noise on unmute for ALC236
  fuse: verify attributes
  fuse: verify nlink
  sched/fair: Scale bandwidth quota and period without losing quota/period ratio precision
  tcp: exit if nothing to retransmit on RTO timeout
  net: aquantia: fix RSS table and key sizes
  media: vimc: fix start stream when link is disabled
  ARM: dts: sunxi: Fix PMU compatible strings
  usb: mtu3: fix dbginfo in qmu_tx_zlp_error_handler
  mlx4: Use snprintf instead of complicated strcpy
  IB/hfi1: Close VNIC sdma_progress sleep window
  IB/hfi1: Ignore LNI errors before DC8051 transitions to Polling state
  mlxsw: spectrum_router: Relax GRE decap matching check
  firmware: qcom: scm: fix compilation error when disabled
  media: stkwebcam: Bugfix for wrong return values
  tty: Don't block on IO when ldisc change is pending
  nfsd: Return EPERM, not EACCES, in some SETATTR cases
  MIPS: OCTEON: cvmx_pko_mem_debug8: use oldest forward compatible definition
  clk: renesas: r8a77995: Correct parent clock of DU
  powerpc/math-emu: Update macros from GCC
  pstore/ram: Avoid NULL deref in ftrace merging failure path
  net/mlx4_core: Fix return codes of unsupported operations
  dlm: fix invalid cluster name warning
  ARM: dts: realview: Fix some more duplicate regulator nodes
  clk: sunxi-ng: h3/h5: Fix CSI_MCLK parent
  ARM: dts: pxa: clean up USB controller nodes
  mtd: fix mtd_oobavail() incoherent returned value
  kbuild: fix single target build for external module
  modpost: skip ELF local symbols during section mismatch check
  tcp: fix SNMP TCP timeout under-estimation
  tcp: fix SNMP under-estimation on failed retransmission
  tcp: fix off-by-one bug on aborting window-probing socket
  ARM: dts: realview-pbx: Fix duplicate regulator nodes
  ARM: dts: mmp2: fix the gpio interrupt cell number
  net/x25: fix null_x25_address handling
  net/x25: fix called/calling length calculation in x25_parse_address_block
  arm64: dts: meson-gxl-khadas-vim: fix GPIO lines names
  arm64: dts: meson-gxbb-odroidc2: fix GPIO lines names
  arm64: dts: meson-gxbb-nanopi-k2: fix GPIO lines names
  arm64: dts: meson-gxl-libretech-cc: fix GPIO lines names
  ARM: OMAP1/2: fix SoC name printing
  ASoC: au8540: use 64-bit arithmetic instead of 32-bit
  nfsd: fix a warning in __cld_pipe_upcall()
  ARM: debug: enable UART1 for socfpga Cyclone5
  dlm: NULL check before kmem_cache_destroy is not needed
  ARM: dts: sun8i: v3s: Change pinctrl nodes to avoid warning
  ARM: dts: sun5i: a10s: Fix HDMI output DTC warning
  ASoC: rsnd: tidyup registering method for rsnd_kctrl_new()
  lockd: fix decoding of TEST results
  i2c: imx: don't print error message on probe defer
  serial: imx: fix error handling in console_setup
  altera-stapl: check for a null key before strcasecmp'ing it
  dma-mapping: fix return type of dma_set_max_seg_size()
  sparc: Correct ctx->saw_frame_pointer logic.
  f2fs: fix to allow node segment for GC by ioctl path
  ARM: dts: rockchip: Assign the proper GPIO clocks for rv1108
  ARM: dts: rockchip: Fix the PMU interrupt number for rv1108
  f2fs: change segment to section in f2fs_ioc_gc_range
  f2fs: fix count of seg_freed to make sec_freed correct
  ACPI: fix acpi_find_child_device() invocation in acpi_preset_companion()
  usb: dwc3: don't log probe deferrals; but do log other error codes
  usb: dwc3: debugfs: Properly print/set link state for HS
  dmaengine: dw-dmac: implement dma protection control setting
  dmaengine: coh901318: Remove unused variable
  dmaengine: coh901318: Fix a double-lock bug
  media: cec: report Vendor ID after initialization
  media: pulse8-cec: return 0 when invalidating the logical address
  ARM: dts: exynos: Use Samsung SoC specific compatible for DWC2 module
  rtc: dt-binding: abx80x: fix resistance scale
  rtc: max8997: Fix the returned value in case of error in 'max8997_rtc_read_alarm()'
  math-emu/soft-fp.h: (_FP_ROUND_ZERO) cast 0 to void to fix warning
  net/smc: use after free fix in smc_wr_tx_put_slot()
  MIPS: OCTEON: octeon-platform: fix typing
  iomap: sub-block dio needs to zeroout beyond EOF
  net-next/hinic:fix a bug in set mac address
  regulator: Fix return value of _set_load() stub
  clk: rockchip: fix ID of 8ch clock of I2S1 for rk3328
  clk: rockchip: fix I2S1 clock gate register for rk3328
  mm/vmstat.c: fix NUMA statistics updates
  Staging: iio: adt7316: Fix i2c data reading, set the data field
  pinctrl: qcom: ssbi-gpio: fix gpio-hog related boot issues
  crypto: bcm - fix normal/non key hash algorithm failure
  crypto: ecc - check for invalid values in the key verification test
  scsi: zfcp: drop default switch case which might paper over missing case
  net: dsa: mv88e6xxx: Work around mv886e6161 SERDES missing MII_PHYSID2
  MIPS: SiByte: Enable ZONE_DMA32 for LittleSur
  dlm: fix missing idr_destroy for recover_idr
  ARM: dts: rockchip: Fix rk3288-rock2 vcc_flash name
  clk: rockchip: fix rk3188 sclk_mac_lbtest parameter ordering
  clk: rockchip: fix rk3188 sclk_smc gate data
  i40e: don't restart nway if autoneg not supported
  rtc: s3c-rtc: Avoid using broken ALMYEAR register
  net: ethernet: ti: cpts: correct debug for expired txq skb
  extcon: max8997: Fix lack of path setting in USB device mode
  dlm: fix possible call to kfree() for non-initialized pointer
  clk: sunxi-ng: a64: Fix gate bit of DSI DPHY
  net/mlx5: Release resource on error flow
  ARM: 8813/1: Make aligned 2-byte getuser()/putuser() atomic on ARMv6+
  iwlwifi: mvm: Send non offchannel traffic via AP sta
  iwlwifi: mvm: synchronize TID queue removal
  cxgb4vf: fix memleak in mac_hlist initialization
  serial: core: Allow processing sysrq at port unlock time
  i2c: core: fix use after free in of_i2c_notify
  net: ep93xx_eth: fix mismatch of request_mem_region in remove
  rsxx: add missed destroy_workqueue calls in remove
  ALSA: pcm: Fix stream lock usage in snd_pcm_period_elapsed()
  sched/core: Avoid spurious lock dependencies
  Input: cyttsp4_core - fix use after free bug
  xfrm: release device reference for invalid state
  NFC: nxp-nci: Fix NULL pointer dereference after I2C communication error
  audit_get_nd(): don't unlock parent too early
  exportfs_decode_fh(): negative pinned may become positive without the parent locked
  iwlwifi: pcie: don't consider IV len in A-MSDU
  RDMA/hns: Correct the value of HNS_ROCE_HEM_CHUNK_LEN
  autofs: fix a leak in autofs_expire_indirect()
  serial: ifx6x60: add missed pm_runtime_disable
  serial: serial_core: Perform NULL checks for break_ctl ops
  serial: pl011: Fix DMA ->flush_buffer()
  tty: serial: msm_serial: Fix flow control
  tty: serial: fsl_lpuart: use the sg count from dma_map_sg
  usb: gadget: u_serial: add missing port entry locking
  arm64: tegra: Fix 'active-low' warning for Jetson TX1 regulator
  rsi: release skb if rsi_prepare_beacon fails
  ANDROID: staging: android: ion: Fix build when CONFIG_ION_SYSTEM_HEAP=n
  ANDROID: staging: android: ion: Expose total heap and pool sizes via sysfs
  UPSTREAM: include/linux/slab.h: fix sparse warning in kmalloc_type()
  UPSTREAM: mm, slab: shorten kmalloc cache names for large sizes
  UPSTREAM: mm, proc: add KReclaimable to /proc/meminfo
  BACKPORT: mm: rename and change semantics of nr_indirectly_reclaimable_bytes
  UPSTREAM: dcache: allocate external names from reclaimable kmalloc caches
  BACKPORT: mm, slab/slub: introduce kmalloc-reclaimable caches
  UPSTREAM: mm, slab: combine kmalloc_caches and kmalloc_dma_caches
  ANDROID: kbuild: disable SCS by default in allmodconfig
  ANDROID: arm64: cuttlefish_defconfig: enable LTO, CFI, and SCS
  BACKPORT: FROMLIST: arm64: implement Shadow Call Stack
  FROMLIST: arm64: disable SCS for hypervisor code
  BACKPORT: FROMLIST: arm64: vdso: disable Shadow Call Stack
  FROMLIST: arm64: preserve x18 when CPU is suspended
  FROMLIST: arm64: reserve x18 from general allocation with SCS
  FROMLIST: arm64: disable function graph tracing with SCS
  FROMLIST: scs: add support for stack usage debugging
  FROMLIST: scs: add accounting
  FROMLIST: add support for Clang's Shadow Call Stack (SCS)
  FROMLIST: arm64: kernel: avoid x18 in __cpu_soft_restart
  FROMLIST: arm64: kvm: stop treating register x18 as caller save
  FROMLIST: arm64/lib: copy_page: avoid x18 register in assembler code
  FROMLIST: arm64: mm: avoid x18 in idmap_kpti_install_ng_mappings
  ANDROID: use non-canonical CFI jump tables
  ANDROID: arm64: add __nocfi to __apply_alternatives
  ANDROID: arm64: add __pa_function
  ANDROID: arm64: allow ThinLTO to be selected
  ANDROID: soc/tegra: disable ARCH_TEGRA_210_SOC with LTO
  FROMLIST: arm64: fix alternatives with LLVM's integrated assembler
  ANDROID: irqchip/gic-v3: rename gic_of_init to work around a ThinLTO+CFI bug
  ANDROID: kbuild: limit LTO inlining
  ANDROID: kbuild: merge module sections with LTO
  ANDROID: init: ensure initcall ordering with LTO
  Revert "ANDROID: HACK: init: ensure initcall ordering with LTO"
  ANDROID: add support for ThinLTO
  ANDROID: Switch to LLD
  ANDROID: clang: update to 10.0.1
  ANDROID: arm64: add atomic_ll_sc.o to obj-y if using lld
  ANDROID: enable ARM64_ERRATUM_843419 by default with LTO_CLANG
  ANDROID: kbuild: allow lld to be used with CONFIG_LTO_CLANG
  ANDROID: Makefile: set -Qunused-arguments sooner
  BACKPORT: FROMLIST: Makefile: lld: tell clang to use lld
  BACKPORT: FROMLIST: Makefile: lld: set -O2 linker flag when linking with LLD
  ANDROID: scripts/Kbuild: add ld-name support for ld.lld
  UPSTREAM: bpf: permit multiple bpf attachments for a single perf event
  UPSTREAM: bpf: use the same condition in perf event set/free bpf handler
  UPSTREAM: bpf: multi program support for cgroup+bpf
  BACKPORT: serdev: make synchronous write return bytes written
  UPSTREAM: gnss: serial: fix synchronous write timeout
  UPSTREAM: gnss: fix potential error pointer dereference
  BACKPORT: gnss: add receiver type support
  UPSTREAM: dt-bindings: add generic gnss binding
  UPSTREAM: gnss: add generic serial driver
  ANDROID: cuttlefish_defconfig: Enable CONFIG_SERIAL_DEV_BUS
  ANDROID: cuttlefish_defconfig: Enable CONFIG_GNSS
  BACKPORT: gnss: add GNSS receiver subsystem
  UPSTREAM: arm64: Validate tagged addresses in access_ok() called from kernel threads
  BACKPORT: ARM: 8905/1: Emit __gnu_mcount_nc when using Clang 10.0.0 or newer
  fs/lock: skip lock owner pid translation in case we are in init_pid_ns
  f2fs: stop GC when the victim becomes fully valid
  f2fs: expose main_blkaddr in sysfs
  f2fs: choose hardlimit when softlimit is larger than hardlimit in f2fs_statfs_project()
  f2fs: Fix deadlock in f2fs_gc() context during atomic files handling
  f2fs: show f2fs instance in printk_ratelimited
  f2fs: fix potential overflow
  f2fs: fix to update dir's i_pino during cross_rename
  f2fs: support aligned pinned file
  f2fs: avoid kernel panic on corruption test
  f2fs: fix wrong description in document
  f2fs: cache global IPU bio
  f2fs: fix to avoid memory leakage in f2fs_listxattr
  f2fs: check total_segments from devices in raw_super
  f2fs: update multi-dev metadata in resize_fs
  f2fs: mark recovery flag correctly in read_raw_super_block()
  f2fs: fix to update time in lazytime mode
  vfs: don't allow writes to swap files
  mm: set S_SWAPFILE on blockdev swap devices

Conflicts:
	drivers/Makefile
	drivers/staging/android/ion/ion.c
	drivers/staging/android/ion/ion.h
	drivers/staging/android/ion/ion_page_pool.c
	drivers/usb/dwc3/core.c
	drivers/usb/dwc3/debugfs.c
	drivers/usb/dwc3/ep0.c
	fs/f2fs/data.c
	include/linux/mmzone.h
	mm/vmstat.c

Discarded below patches, as usb patches not applicable and block patch
causing stability issues:
	usb: dwc3: ep0: Clear started flag on completion
	usb: dwc3: don't log probe deferrals; but do log other error codes
	block: fix single range discard merge

Fixed build errors in below files:
	drivers/gpu/msm/kgsl_pool.c
	drivers/staging/android/ion/ion_page_pool.c
	kernel/taskstats.c

Fixed bootup issue in:
	arch/arm64/mm/proc.s

Change-Id: I0a16824c251c14c63af78f9cfd9ede5e82c427fc
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
2020-04-17 17:47:52 +05:30
Sami Tolvanen
4ff705ab4d ANDROID: init: ensure initcall ordering with LTO
With LTO, the compiler doesn't necessarily obey link order for
initcalls, and the initcall variable needs to be globally unique
to avoid naming collisions.

In order to preserve the correct order, we add each variable
into its own section and generate a linker script (in
scripts/link-vmlinux.sh) to ensure the order remains correct.  We
also add a __COUNTER__ prefix to the name, so we can retain the
order of initcalls within each compilation unit, and __LINE__ to
make the names more unique.

Bug: 145210207
Change-Id: Iddda881a52b7942781713b188d810b6100159a2b
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2019-12-13 07:14:18 -08:00
Sami Tolvanen
fb40239300 Revert "ANDROID: HACK: init: ensure initcall ordering with LTO"
This reverts commit 727e841581.

This is change not sufficient for ThinLTO, it's replaced by
  Iddda881a52b7942781713b188d810b6100159a2b

Bug: 145210207
Change-Id: Idc03fdb8c80b5939c2a0915165cb55e4cf6f0015
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2019-12-13 07:14:18 -08:00
Venkata Rao Kakani
cb7c1ddc02 init: early_userspace: Mount Early Services partition early
Early Services needs early services partition to be mounted
early and launching of early init should happen early.

Change-Id: I2f2a79b9be00b48eb293d0f22a92f80474a32c03
Signed-off-by: Venkata Rao Kakani <vkakani@codeaurora.org>
2019-10-17 03:44:42 -07:00
Naresh Maradana
d4807bd60d selinux: Relocate ss_initialized and selinux_enforcing to separate 4k
We need to relocate ss_initialized and selinux_enforcing to a separate
4k page to enable EL2 Hypervisor to monitor changes to this variable
using ARM stage 2 MMU. We will avoid getting page faults from
un-related data as the MMU granularity is configured to 4k.

Change-Id: I904176b6772feb27065bddd89613f6280ed99891
Signed-off-by: Naresh Maradana <nmardana@codeaurora.org>
2018-06-19 14:34:49 +05:30
Sami Tolvanen
d590fd127d ANDROID: add support for clang Control Flow Integrity (CFI)
This change adds the CONFIG_CFI_CLANG option, CFI error handling,
and a faster look-up table for cross module CFI checks.

Bug: 67506682
Change-Id: Ic009f0a629b552a0eb16e6d89808c7029e91447d
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2018-04-26 16:03:37 -07:00
Sami Tolvanen
727e841581 ANDROID: HACK: init: ensure initcall ordering with LTO
With LTO, LLVM sorts initcalls in a single translation unit alphabetically
based on the name of the function (or actually, the variable stored in
the initcall section). Use __COUNTER__ in the variable name in an attempt
to preserve the intended order.

Bug: 62093296
Bug: 67506682
Change-Id: I4fa3cb93cba967a1440ac53328eb6b8ac649ff36
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
2018-04-26 16:03:37 -07:00
David Woodhouse
e76a9431f2 x86/retpoline: Support retpoline builds with Clang
commit 87358710c1fb4f1bf96bbe2349975ff9953fc9b2 upstream.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: arjan.van.de.ven@intel.com
Cc: bp@alien8.de
Cc: dave.hansen@intel.com
Cc: jmattson@google.com
Cc: karahmed@amazon.de
Cc: kvm@vger.kernel.org
Cc: pbonzini@redhat.com
Cc: rkrcmar@redhat.com
Link: http://lkml.kernel.org/r/1519037457-7643-5-git-send-email-dwmw@amazon.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-15 10:54:36 +01:00
David Woodhouse
838dbae0ac x86/retpoline: Avoid retpolines for built-in __init functions
commit 66f793099a636862a71c59d4a6ba91387b155e0c

There's no point in building init code with retpolines, since it runs before
any potentially hostile userspace does. And before the retpoline is actually
ALTERNATIVEd into place, for much of it.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: karahmed@amazon.de
Cc: peterz@infradead.org
Cc: bp@alien8.de
Link: https://lkml.kernel.org/r/1517484441-1420-2-git-send-email-dwmw@amazon.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-02-07 11:12:25 -08:00
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>
2017-11-02 11:10:55 +01:00
Steven Rostedt (VMware)
42c269c88d ftrace: Allow for function tracing to record init functions on boot up
Adding a hook into free_reserve_area() that informs ftrace that boot up init
text is being free, lets ftrace safely remove those init functions from its
records, which keeps ftrace from trying to modify text that no longer
exists.

Note, this still does not allow for tracing .init text of modules, as
modules require different work for freeing its init code.

Link: http://lkml.kernel.org/r/1488502497.7212.24.camel@linux.intel.com

Cc: linux-mm@kvack.org
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Requested-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2017-03-24 20:51:49 -04:00
Laura Abbott
0f5bf6d0af arch: Rename CONFIG_DEBUG_RODATA and CONFIG_DEBUG_MODULE_RONX
Both of these options are poorly named. The features they provide are
necessary for system security and should not be considered debug only.
Change the names to CONFIG_STRICT_KERNEL_RWX and
CONFIG_STRICT_MODULE_RWX to better describe what these options do.

Signed-off-by: Laura Abbott <labbott@redhat.com>
Acked-by: Jessica Yu <jeyu@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
2017-02-07 12:32:52 -08:00
AKASHI Takahiro
39290b389e module: extend 'rodata=off' boot cmdline parameter to module mappings
The current "rodata=off" parameter disables read-only kernel mappings
under CONFIG_DEBUG_RODATA:
    commit d2aa1acad2 ("mm/init: Add 'rodata=off' boot cmdline parameter
    to disable read-only kernel mappings")

This patch is a logical extension to module mappings ie. read-only mappings
at module loading can be disabled even if CONFIG_DEBUG_SET_MODULE_RONX
(mainly for debug use). Please note, however, that it only affects RO/RW
permissions, keeping NX set.

This is the first step to make CONFIG_DEBUG_SET_MODULE_RONX mandatory
(always-on) in the future as CONFIG_DEBUG_RODATA on x86 and arm64.

Suggested-by: and Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Link: http://lkml.kernel.org/r/20161114061505.15238-1-takahiro.akashi@linaro.org
Signed-off-by: Jessica Yu <jeyu@redhat.com>
2016-11-27 16:15:33 -08:00
Linus Torvalds
9ffc66941d Merge tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull gcc plugins update from Kees Cook:
 "This adds a new gcc plugin named "latent_entropy". It is designed to
  extract as much possible uncertainty from a running system at boot
  time as possible, hoping to capitalize on any possible variation in
  CPU operation (due to runtime data differences, hardware differences,
  SMP ordering, thermal timing variation, cache behavior, etc).

  At the very least, this plugin is a much more comprehensive example
  for how to manipulate kernel code using the gcc plugin internals"

* tag 'gcc-plugins-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  latent_entropy: Mark functions with __latent_entropy
  gcc-plugins: Add latent_entropy plugin
2016-10-15 10:03:15 -07:00
Linus Torvalds
84d69848c9 Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild updates from Michal Marek:

 - EXPORT_SYMBOL for asm source by Al Viro.

   This does bring a regression, because genksyms no longer generates
   checksums for these symbols (CONFIG_MODVERSIONS). Nick Piggin is
   working on a patch to fix this.

   Plus, we are talking about functions like strcpy(), which rarely
   change prototypes.

 - Fixes for PPC fallout of the above by Stephen Rothwell and Nick
   Piggin

 - fixdep speedup by Alexey Dobriyan.

 - preparatory work by Nick Piggin to allow architectures to build with
   -ffunction-sections, -fdata-sections and --gc-sections

 - CONFIG_THIN_ARCHIVES support by Stephen Rothwell

 - fix for filenames with colons in the initramfs source by me.

* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild: (22 commits)
  initramfs: Escape colons in depfile
  ppc: there is no clear_pages to export
  powerpc/64: whitelist unresolved modversions CRCs
  kbuild: -ffunction-sections fix for archs with conflicting sections
  kbuild: add arch specific post-link Makefile
  kbuild: allow archs to select link dead code/data elimination
  kbuild: allow architectures to use thin archives instead of ld -r
  kbuild: Regenerate genksyms lexer
  kbuild: genksyms fix for typeof handling
  fixdep: faster CONFIG_ search
  ia64: move exports to definitions
  sparc32: debride memcpy.S a bit
  [sparc] unify 32bit and 64bit string.h
  sparc: move exports to definitions
  ppc: move exports to definitions
  arm: move exports to definitions
  s390: move exports to definitions
  m68k: move exports to definitions
  alpha: move exports to actual definitions
  x86: move exports to actual definitions
  ...
2016-10-14 14:26:58 -07:00
Emese Revfy
0766f788eb latent_entropy: Mark functions with __latent_entropy
The __latent_entropy gcc attribute can be used only on functions and
variables.  If it is on a function then the plugin will instrument it for
gathering control-flow entropy. If the attribute is on a variable then
the plugin will initialize it with random contents.  The variable must
be an integer, an integer array type or a structure with integer fields.

These specific functions have been selected because they are init
functions (to help gather boot-time entropy), are called at unpredictable
times, or they have variable loops, each of which provide some level of
latent entropy.

Signed-off-by: Emese Revfy <re.emese@gmail.com>
[kees: expanded commit message]
Signed-off-by: Kees Cook <keescook@chromium.org>
2016-10-10 14:51:45 -07:00
Helge Deller
b5d5cf2b8a parisc: Drop BROKEN_RODATA config option
PARISC was the only architecture which selected the BROKEN_RODATA config
option. Drop it and remove the special handling from init.h as well.

Signed-off-by: Helge Deller <deller@gmx.de>
2016-09-20 18:02:35 +02:00
Nicholas Piggin
b67067f117 kbuild: allow archs to select link dead code/data elimination
Introduce LD_DEAD_CODE_DATA_ELIMINATION option for architectures to
select to build with -ffunction-sections, -fdata-sections, and link
with --gc-sections. It requires some work (documented) to ensure all
unreferenced entrypoints are live, and requires toolchain and build
verification, so it is made a per-arch option for now.

On a random powerpc64le build, this yelds a significant size saving,
it boots and runs fine, but there is a lot I haven't tested as yet, so
these savings may be reduced if there are bugs in the link.

    text      data        bss        dec   filename
11169741   1180744    1923176	14273661   vmlinux
10445269   1004127    1919707	13369103   vmlinux.dce

~700K text, ~170K data, 6% removed from kernel image size.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-09-09 10:47:00 +02:00
Fabian Frederick
bd721ea73e treewide: replace obsolete _refok by __ref
There was only one use of __initdata_refok and __exit_refok

__init_refok was used 46 times against 82 for __ref.

Those definitions are obsolete since commit 312b1485fb ("Introduce new
section reference annotations tags: __ref, __refdata, __refconst")

This patch removes the following compatibility definitions and replaces
them treewide.

/* compatibility defines */
#define __init_refok     __ref
#define __initdata_refok __refdata
#define __exit_refok     __ref

I can also provide separate patches if necessary.
(One patch per tree and check in 1 month or 2 to remove old definitions)

[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/1466796271-3043-1-git-send-email-fabf@skynet.be
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02 17:31:41 -04:00
Kees Cook
e267d97b83 asm-generic: Consolidate mark_rodata_ro()
Instead of defining mark_rodata_ro() in each architecture, consolidate it.

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Gross <agross@codeaurora.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Ashok Kumar <ashoks@broadcom.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Brown <david.brown@linaro.org>
Cc: David Hildenbrand <dahi@linux.vnet.ibm.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Emese Revfy <re.emese@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Helge Deller <deller@gmx.de>
Cc: James E.J. Bottomley <jejb@parisc-linux.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathias Krause <minipli@googlemail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: PaX Team <pageexec@freemail.hu>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: kernel-hardening@lists.openwall.com
Cc: linux-arch <linux-arch@vger.kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Link: http://lkml.kernel.org/r/1455748879-21872-2-git-send-email-keescook@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-02-22 08:51:37 +01:00
Paul Gortmaker
0fd972a7d9 module: relocate module_init from init.h to module.h
Modular users will always be users of init functionality, but
users of init functionality are not necessarily always modules.

Hence any functionality like module_init and module_exit would
be more at home in the module.h file.  And module.h should
explicitly include init.h to make the dependency clear.

We've already done all the legwork needed to ensure that this
move does not cause any build regressions due to implicit
header file include assumptions about where module_init lives.

Cc: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2015-07-05 23:59:14 -04:00
Paul Gortmaker
22c1587adf init: delete the __cpuinit related stubs
The __cpuinit support was removed several releases ago in 3.11-rc1 with
commit 22f0a27367 ("init.h: remove __cpuinit
sections from the kernel")

People have had a chance to update their out of tree code, so now we remove
the no-op stubs to ensure no more new use cases can creep back in.

Also delete the mention of __cpuinitdata from the tag script.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2015-06-16 14:12:23 -04:00
Ingo Molnar
c281b94570 init.h: Clean up the __setup()/early_param() macros
Make it all a bit easier on the eyes:

 - Move the __setup_param() lines right after their init functions
 - Use consistent vertical spacing
 - Use more horizontal spacing to make it look like regular C code
 - Use standard comment style

Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jan Beulich <JBeulich@suse.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: julia.lawall@lip6.fr
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-05 09:23:12 +01:00
Luis R. Rodriguez
bfb33bad83 init.h: Add early_param_on_off()
At times all you need is a kconfig variable to enable a feature,
by default but you may want to also enable / disable it through
a kernel parameter. In such cases the parameter routines to turn
the thing on / off are really simple. Just use a wrapper for
this, it lets us generalize the code and makes it easier to
associate parameters with related kernel configuration options.

Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: JBeulich@suse.com
Cc: Jan Beulich <JBeulich@suse.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Xishi Qiu <qiuxishi@huawei.com>
Cc: julia.lawall@lip6.fr
Link: http://lkml.kernel.org/r/1425518654-3403-4-git-send-email-mcgrof@do-not-panic.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-05 08:02:12 +01:00
Tony Lindgren
451ef1caa8 init.h: Update initcall_sync variants to fix build errors
We are getting randconfig build errors on device drivers with
tristate Kconfig option if they are using custom initcall
levels. Rather than add ifdeffery into the drivers, let's add
the missing initcall_sync variants.

As the comment in init.h has kept people from updating the
list of initcalls that can be just module_init when the driver
is loaded as a loadable module, let's also update the comment
a bit to describe valid use cases custom initcall levels.

While most drivers should nowadays use just regular module_init
because of the deferred probe, we do have quite a few custom
initcall levels left that we cannot remove until tested properly.

There are also still few valid cases where a custom initcall
level might make sense that I'm aware of.

For example a bus snooping driver can provide information about
invalid bus access and is handy loader early when built in. But
there's no hard dependency to have it necessarily built in and
a loadable module is a valid option.

Another example is a driver implementing a Linux framework like
pinctrl framework. That driver may be needed early on some
platforms because of legacy reasons, while it can be just a
regular module_init on most platforms.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27 14:26:31 -07:00
Andi Kleen
ef1b893c29 lto, workaround: Add workaround for initcall reordering
Work around a LTO gcc problem: when there is no reference to a variable
in a module it will be moved to the end of the program. This causes
reordering of initcalls which the kernel does not like.
Add a dummy reference function to avoid this. The function is
deleted by the linker.

This replaces a previous much slower workaround.

Thanks to Jan "Honza" Hubička for suggesting this technique.

Suggested-by: Jan Hubička <hubicka@ucw.cz>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1391846481-31491-4-git-send-email-ak@linux.intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2014-02-13 20:24:13 -08:00
Randy Dunlap
b46d0c46cc init.h: add missing initcall variants
Add missing initcall variants when building for loadable modules.
This fixes this build error on powerpc allmodconfig:

drivers/tty/ehv_bytechan.c: error: type defaults to 'int' in declaration of 'console_initcall' [-Werror=implicit-int]

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Timur Tabi <timur@tabi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-10 22:58:13 -08:00
Geert Uytterhoeven
65321547c8 init.h: document the existence of __initconst
Initdata can be const since more than 5 years, using the __initconst
keyword.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-11-13 12:09:26 +09:00
Rob Landley
57f150a58c initmpfs: move rootfs code from fs/ramfs/ to init/
When the rootfs code was a wrapper around ramfs, having them in the same
file made sense.  Now that it can wrap another filesystem type, move it in
with the init code instead.

This also allows a subsequent patch to access rootfstype= command line
arg.

Signed-off-by: Rob Landley <rob@landley.net>
Cc: Jeff Layton <jlayton@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jim Cromie <jim.cromie@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-09-11 15:59:37 -07:00
Paul Gortmaker
22f0a27367 init.h: remove __cpuinit sections from the kernel
The __cpuinit type of throwaway sections might have made sense
some time ago when RAM was more constrained, but now the savings
do not offset the cost and complications.  For example, the fix in
commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time")
is a good example of the nasty type of bugs that can be created
with improper use of the various __init prefixes.

After a discussion on LKML[1] it was decided that cpuinit should go
the way of devinit and be phased out.  Once all the users are gone,
we can then finally remove the macros themselves from linux/init.h.

As an interim step, we can dummy out the macros to be no-ops, and
this will allow us to avoid a giant tree-wide patch, and instead
we can feed in smaller chunks mainly via the arch/ trees.  This
is in keeping with commit 78d86c213f
("init.h: Remove __dev* sections from the kernel")

We don't strictly need to dummy out the macros to do this, but if
we don't then some harmless section mismatch warnings may temporarily
result.  For example, notify_cpu_starting() and cpu_up() are arch
independent (kernel/cpu.c) and are flagged as __cpuinit.  And hence
the calling functions in the arch specific code are also expected
to be __cpuinit -- if not, then we get the section mismatch warning.

Two of the three __CPUINIT variants are not used whatsoever, and
so they are simply removed directly at this point in time.

[1] https://lkml.org/lkml/2013/5/20/589

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-06-26 12:13:18 -04:00
Tejun Heo
c14afb82ff Merge branch 'master' into for-3.9-async
To receive f56c3196f2 ("async: fix
__lowest_in_progress()").

Signed-off-by: Tejun Heo <tj@kernel.org>
2013-01-23 09:31:01 -08:00
Tejun Heo
bb813f4c93 init, block: try to load default elevator module early during boot
This patch adds default module loading and uses it to load the default
block elevator.  During boot, it's called right after initramfs or
initrd is made available and right before control is passed to
userland.  This ensures that as long as the modules are available in
the usual places in initramfs, initrd or the root filesystem, the
default modules are loaded as soon as possible.

This will replace the on-demand elevator module loading from elevator
init path.

v2: Fixed build breakage when !CONFIG_BLOCK.  Reported by kbuild test
    robot.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Alex Riesen <raa.lkml@gmail.com>
Cc: Fengguang We <fengguang.wu@intel.com>
2013-01-18 14:05:56 -08:00
Greg Kroah-Hartman
54b956b903 Remove __dev* markings from init.h
Now that all in-kernel users of __dev* are gone, let's remove them from
init.h to keep them from popping up again and again.

Thanks to Bill Pemberton for doing all of the hard work to make removal
of this possible.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-10 10:57:01 -08:00
Matthew Leach
7929d407e4 include/linux/init.h: use the stringify operator for the __define_initcall macro
Currently the __define_initcall() macro takes three arguments, fn, id and
level.  The level argument is exactly the same as the id argument but
wrapped in quotes.  To overcome this need to specify three arguments to
the __define_initcall macro, where one argument is the stringification of
another, we can just use the stringification macro instead.

Signed-off-by: Matthew Leach <matthew@mattleach.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-12-17 17:15:12 -08:00
Greg Kroah-Hartman
78d86c213f init.h: Remove __dev* sections from the kernel
With the recent work to remove CONFIG_HOTPLUG, we are starting to get a
bunch of __devinit section warnings, despite CONFIG_HOTPLUG always being
enabled.  So, stop marking the sections entirely, by defining them away
the section markings in init.h

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-30 12:08:42 -08:00
Andi Kleen
754b7b63d1 sections: disable const sections for PA-RISC v2
The PA-RISC tool chain seems to have some problem with correct
read/write attributes on sections.  This causes problems when the const
sections are fixed up for other architecture to only contain truly
read-only data.

Disable const sections for PA-RISC

This can cause a bit of noise with modpost.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-10-06 03:04:37 +09:00
Jim Cromie
96263d2863 init: add comments to keep initcall-names in sync with initcall levels
main.c has initcall_level_names[] for parse_args to print in debug messages,
add comments to keep them in sync with initcalls defined in init.h.

Also add "loadable" into comment re not using *_initcall macros in
modules, to disambiguate from kernel/params.c and other builtins.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-07-27 09:29:42 +09:30
Rusty Russell
2329abfa34 module_param: make bool parameters really bool (core code)
module_param(bool) used to counter-intuitively take an int.  In
fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy
trick.

It's time to remove the int/unsigned int option.  For this version
it'll simply give a warning, but it'll break next kernel version.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2012-01-13 09:32:18 +10:30
Steven Rostedt
f0201738b6 ftrace: Avoid recording mcount on .init sections directly
The init and exit sections should not be traced and adding a call to
mcount to them is a waste of text and instruction cache. Have the
macro section attributes include notrace to ignore these functions
for tracing from the build.

Link: http://lkml.kernel.org/r/20110421023738.953028219@goodmis.org
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2011-05-16 14:46:30 -04:00
Michal Nazarewicz
5ea081785d init.h: add some more documentation to __ref* tags
The __ref* tags may have been confusing for new kernel
developers (I was confused by them for sure) so adding a few
more sentences to comment to clear things up for people who
see those for the first time.

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-10-22 10:21:26 -07:00
Denys Vlasenko
07b3bb1ef2 Rename .data.nosave to .data..nosave.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2010-03-03 11:26:01 +01:00
Arjan van de Ven
f251177486 PM: Add initcall_debug style timing for suspend/resume
In order to diagnose overall suspend/resume times, we need
basic instrumentation to break down the total time into per
device timing, similar to initcall_debug.

This patch adds the basic timing instrumentation, needed
for a scritps/bootgraph.pl equivalent or humans.
The bootgraph.pl program is still a work in progress, but
is far enough along to know that this patch is sufficient.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2009-12-15 20:42:06 +01:00
Borislav Petkov
329bd4119c initcalls: Add early_initcall() for modules
Complete the early_initcall() API by making it available in modules
too. To be used by the EDAC/MCE code.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andi Kleen <andi@firstfloor.org>
LKML-Reference: <20091002132321.GC28682@aftab>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-10-02 15:42:19 +02:00
Jan Beulich
8b5a10fc6f x86: properly annotate alternatives.c
Some of the NOPs tables aren't used on 64-bits, quite some code and
data is needed post-init for module loading only, and a couple of
functions aren't used outside that file (i.e. can be static, and don't
need to be exported).

The change to __INITDATA/__INITRODATA is needed to avoid an assembler
warning.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <4A8BC8A00200007800010823@vpn.id2.novell.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2009-08-21 15:30:12 -07:00
Peter Oberparleiter
b99b87f70c kernel: constructor support
Call constructors (gcc-generated initcall-like functions) during kernel
start and module load.  Constructors are e.g.  used for gcov data
initialization.

Disable constructor support for usermode Linux to prevent conflicts with
host glibc.

Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Li Wei <W.Li@Sun.COM>
Cc: Michael Ellerman <michaele@au1.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Heiko Carstens <heicars2@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <mschwid2@linux.vnet.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-18 13:03:57 -07:00
Geert Uytterhoeven
ae52bb2384 fbdev: move logo externs to header file
Now we have __initconst, we can finally move the external declarations for
the various Linux logo structures to <linux/linux_logo.h>.

James' ack dates back to the previous submission (way to long ago), when the
logos were still __initdata, which caused failures on some platforms with some
toolchain versions.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: James Simmons <jsimmons@infradead.org>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-16 19:47:57 -07:00
Sam Ravnborg
7923f90fff vmlinux.lds.h update
Updated after review by Tim Abbott.
- Use HEAD_TEXT_SECTION
- Drop use of section-names.h and delete file
- Introduce EXIT_CALL

Deleting section-names.h required a few simple
updates of init.h

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Tim Abbott <tabbott@ksplice.com>
2009-06-14 22:10:41 +02:00
Jan Beulich
fd6c3a8dc4 initconst adjustments
- add .init.rodata to INIT_DATA, and group all initconst flavors
  together
- move strings generated from __setup_param() into .init.rodata
- add .*init.rodata to modpost's sets of init sections
- make modpost warn about references between meminit and cpuinit
  as well as memexit and cpuexit sections (as CPU and memory
  hotplug are independently selectable features)

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-06-09 22:37:43 +02:00