OrangePi_CM5/include/uapi/linux
Peter Collingbourne 50829b8901 BACKPORT: arm64: Introduce prctl(PR_PAC_{SET,GET}_ENABLED_KEYS)
This change introduces a prctl that allows the user program to control
which PAC keys are enabled in a particular task. The main reason
why this is useful is to enable a userspace ABI that uses PAC to
sign and authenticate function pointers and other pointers exposed
outside of the function, while still allowing binaries conforming
to the ABI to interoperate with legacy binaries that do not sign or
authenticate pointers.

The idea is that a dynamic loader or early startup code would issue
this prctl very early after establishing that a process may load legacy
binaries, but before executing any PAC instructions.

This change adds a small amount of overhead to kernel entry and exit
due to additional required instruction sequences.

On a DragonBoard 845c (Cortex-A75) with the powersave governor, the
overhead of similar instruction sequences was measured as 4.9ns when
simulating the common case where IA is left enabled, or 43.7ns when
simulating the uncommon case where IA is disabled. These numbers can
be seen as the worst case scenario, since in more realistic scenarios
a better performing governor would be used and a newer chip would be
used that would support PAC unlike Cortex-A75 and would be expected
to be faster than Cortex-A75.

On an Apple M1 under a hypervisor, the overhead of the entry/exit
instruction sequences introduced by this patch was measured as 0.3ns
in the case where IA is left enabled, and 33.0ns in the case where
IA is disabled.

Signed-off-by: Peter Collingbourne <pcc@google.com>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Link: https://linux-review.googlesource.com/id/Ibc41a5e6a76b275efbaa126b31119dc197b927a5
Link: https://lore.kernel.org/r/d6609065f8f40397a4124654eb68c9f490b4d477.1616123271.git.pcc@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

Bug: 192536783
(cherry picked from commit 201698626fbca1cf1a3b686ba14cf2a056500716)
Change-Id: Ic0a21c92a22575f9ec3599fb67bd2931a50b9f04
[quic_eberman@quicinc.com: Resolved merge conflict in
 arch/arm64/kernel/process.c]
Signed-off-by: Elliot Berman <quic_eberman@quicinc.com>
Signed-off-by: Peter Collingbourne <pcc@google.com>
2021-07-14 20:52:05 -07:00
..
android UPSTREAM: binder: tell userspace to dump current backtrace when detected oneway spamming 2021-05-07 07:13:22 -07:00
byteorder
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caif
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can can: isotp: implement cleanups / improvements from review 2020-10-12 10:06:08 +02:00
cifs
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dvb
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genwqe
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hdlc
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hsi
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iio iio: add IIO_MOD_O2 modifier 2020-08-22 10:53:12 +01:00
isdn
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mmc
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netfilter ANDROID: start to re-add xt_IDLETIMER send_nl_msg support 2021-06-11 14:54:06 +00:00
netfilter_arp
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netfilter_bridge
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netfilter_ipv4
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netfilter_ipv6
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nfsd
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raid
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sched BACKPORT: sched/uclamp: Allow to reset a task uclamp constraint value 2021-05-17 11:17:56 +08:00
spi
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sunrpc
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tc_act net/sched: act_mpls: Add action to push MPLS LSE before Ethernet header 2020-10-03 17:28:45 -07:00
tc_ematch
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usb Merge 5.10.36 into android12-5.10 2021-05-13 14:22:11 +02:00
wimax
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OWNERS ANDROID: Add OWNERS files referring to the respective android-mainline OWNERS 2021-04-03 14:11:30 +00:00
a.out.h
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acct.h
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adb.h
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adfs_fs.h
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affs_hardblocks.h
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agpgart.h
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aio_abi.h
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am437x-vpfe.h
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apm_bios.h
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arcfb.h
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arm_sdei.h
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aspeed-lpc-ctrl.h
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aspeed-p2a-ctrl.h
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atalk.h
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atm.h
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atm_eni.h
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atm_he.h
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atm_idt77105.h
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atm_nicstar.h
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atm_tcp.h
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atm_zatm.h
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atmapi.h
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atmarp.h
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atmbr2684.h
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atmclip.h
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atmdev.h
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atmioc.h
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atmlec.h
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atmmpc.h
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atmppp.h
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atmsap.h
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atmsvc.h
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audit.h
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auto_dev-ioctl.h autofs: fix doubled word 2020-08-12 10:58:00 -07:00
auto_fs.h
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auto_fs4.h
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auxvec.h
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ax25.h
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batadv_packet.h
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batman_adv.h
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baycom.h
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bcache.h bcache: introduce BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE for large bucket 2021-01-12 20:18:25 +01:00
bcm933xx_hcs.h
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bfs_fs.h
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binfmts.h
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blkpg.h
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blktrace_api.h
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blkzoned.h block: fix uapi blkzoned.h comments 2020-10-09 12:47:02 -06:00
bpf.h bpf: Fix enum names for bpf_this_cpu_ptr() and bpf_per_cpu_ptr() helpers 2020-12-11 14:19:07 -08:00
bpf_common.h
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bpf_perf_event.h
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bpfilter.h
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bpqether.h
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bsg.h
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bt-bmc.h
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btf.h
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btrfs.h
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btrfs_tree.h btrfs: tree-checker: fix false alert caused by legacy btrfs root item 2020-10-07 12:13:23 +02:00
can.h
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capability.h Revert "Revert "capabilities: require CAP_SETFCAP to map uid 0"" 2021-05-21 13:17:04 -07:00
capi.h
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cciss_defs.h
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cciss_ioctl.h
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cdrom.h block: scsi_ioctl: Avoid the use of one-element arrays 2020-10-02 17:58:52 -06:00
cec-funcs.h
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cec.h
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cgroupstats.h
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chio.h
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close_range.h
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cm4000_cs.h
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cn_proc.h
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coda.h
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coff.h
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connector.h
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const.h uapi: move constants from <linux/kernel.h> to <linux/const.h> 2021-01-06 14:56:51 +01:00
coresight-stm.h coresight: stm: Support marked packet 2020-09-17 18:46:04 +02:00
cramfs_fs.h
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cryptouser.h
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cuda.h
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cyclades.h
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cycx_cfm.h
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dcbnl.h
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dccp.h
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devlink.h devlink: use _BITUL() macro instead of BIT() in the UAPI header 2020-12-30 11:53:58 +01:00
dlm.h
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dlm_device.h
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dlm_netlink.h
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dlm_plock.h
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dlmconstants.h
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dm-ioctl.h ANDROID: dm: sync inline crypto support with patches going upstream 2021-02-19 10:48:51 +00:00
dm-log-userspace.h
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dm-user.h ANDROID: uapi: Add dm-user structure definition 2020-12-10 15:24:57 -08:00
dma-buf.h
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dma-heap.h
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dn.h
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dns_resolver.h
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dqblk_xfs.h quota: Expand comment describing d_itimer 2020-09-10 09:10:06 +02:00
edd.h
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efs_fs_sb.h
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elf-em.h
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elf-fdpic.h
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elf.h BACKPORT: arm64: Introduce prctl(PR_PAC_{SET,GET}_ENABLED_KEYS) 2021-07-14 20:52:05 -07:00
errno.h
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errqueue.h
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erspan.h
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ethtool.h uapi: move constants from <linux/kernel.h> to <linux/const.h> 2021-01-06 14:56:51 +01:00
ethtool_netlink.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
eventpoll.h
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f2fs.h f2fs: move ioctl interface definitions to separated file 2021-05-19 10:13:00 +02:00
fadvise.h
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falloc.h
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fanotify.h
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fb.h
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fcntl.h
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fd.h
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fdreg.h
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fib_rules.h
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fiemap.h
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filter.h
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firewire-cdev.h
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firewire-constants.h
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fou.h
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fpga-dfl.h
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fs.h
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fscrypt.h fscrypt: remove kernel-internal constants from UAPI header 2020-12-28 14:49:38 -08:00
fsi.h
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fsl_hypervisor.h
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fsmap.h
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fsverity.h fs-verity: support reading signature with ioctl 2021-02-22 09:32:56 -08:00
fuse.h ANDROID: fuse/passthrough: API V2 with __u32 open argument 2021-05-31 09:48:43 +01:00
futex.h
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gameport.h
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gen_stats.h
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genetlink.h genetlink: allow dumping command-specific policy 2020-10-03 14:18:29 -07:00
gfs2_ondisk.h
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gpio.h gpio: uapi: clarify the meaning of 'empty' char arrays 2020-10-28 15:46:47 +01:00
gsmmux.h
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gtp.h gtp: add notification mechanism 2020-08-27 08:01:47 -07:00
hash_info.h
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hdlc.h
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hdlcdrv.h
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hdreg.h
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hid.h
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hiddev.h
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hidraw.h
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hpet.h
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hsr_netlink.h
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hw_breakpoint.h
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hyperv.h
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i2c-dev.h
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i2c.h
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i2o-dev.h
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i8k.h
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icmp.h
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icmpv6.h ICMPv6: Add ICMPv6 Parameter Problem, code 3 definition 2020-10-31 13:16:02 -07:00
idxd.h dmaengine: idxd: fix delta_rec and crc size field for completion record 2021-04-21 13:00:50 +02:00
if.h
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if_addr.h
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if_addrlabel.h
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if_alg.h crypto: af_alg - avoid undefined behavior accessing salg_name 2020-12-26 16:02:45 +01:00
if_arcnet.h
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if_arp.h
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if_bonding.h
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if_bridge.h net: bridge: mcast: add support for blocked port groups 2020-09-23 13:24:34 -07:00
if_cablemodem.h
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if_eql.h
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if_ether.h
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if_fc.h
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if_fddi.h
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if_frad.h
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if_hippi.h
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if_infiniband.h
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if_link.h net: remove comments on struct rtnl_link_stats 2020-09-17 17:58:13 -07:00
if_ltalk.h
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if_macsec.h
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if_packet.h net/packet: make packet_fanout.arr size configurable up to 64K 2021-05-14 09:50:38 +02:00
if_phonet.h
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if_plip.h
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if_ppp.h
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if_pppol2tp.h l2tp: remove tunnel and session debug flags field 2020-08-22 12:44:37 -07:00
if_pppox.h
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if_slip.h
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if_team.h
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if_tun.h
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if_tunnel.h
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if_vlan.h
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if_x25.h
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if_xdp.h
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ife.h
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igmp.h
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ila.h
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in.h net: Fix some comments 2020-08-27 07:55:59 -07:00
in6.h
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in_route.h
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incrementalfs.h ANDROID: Incremental fs: Add uid to INCFS_IOC_GET_LAST_READ_ERROR 2021-05-17 20:08:43 +00:00
inet_diag.h ip: expose inet sockopts through inet_diag 2020-09-03 15:17:28 -07:00
inotify.h
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input-event-codes.h Input: allocate keycode for Fn + right shift 2020-09-08 16:31:14 -07:00
input.h
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io_uring.h io_uring: provide IORING_ENTER_SQ_WAIT for SQPOLL SQ ring waits 2020-09-30 20:32:33 -06:00
ioctl.h
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iommu.h iommu/vt-d: Check UAPI data processed by IOMMU core 2020-10-01 14:52:46 +02:00
ion.h
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ip.h
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ip6_tunnel.h
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ip_vs.h
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ipc.h
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ipmi.h
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ipmi_bmc.h
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ipmi_msgdefs.h ipmi:msghandler: retry to get device id on an error 2020-09-15 09:57:45 -05:00
ipsec.h
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ipv6.h
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ipv6_route.h
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ipx.h
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irqnr.h
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iso_fs.h
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isst_if.h
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ivtv.h
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ivtvfb.h
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jffs2.h
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joystick.h
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kcm.h
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kcmp.h
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kcov.h
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kd.h
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kdev_t.h
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kernel-page-flags.h
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kernel.h uapi: move constants from <linux/kernel.h> to <linux/const.h> 2021-01-06 14:56:51 +01:00
kernelcapi.h
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kexec.h
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keyboard.h
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keyctl.h
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kfd_ioctl.h include/uapi/linux: Fix indentation in kfd_smi_event enum 2020-08-31 14:40:29 -04:00
kvm.h kvm: x86: only provide PV features if enabled in guest's CPUID 2020-10-21 17:36:32 -04:00
kvm_para.h
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l2tp.h net: l2tp: reduce log level of messages in receive path, add counter instead 2021-03-17 17:06:11 +01:00
libc-compat.h
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lightnvm.h uapi: move constants from <linux/kernel.h> to <linux/const.h> 2021-01-06 14:56:51 +01:00
limits.h
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lirc.h
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llc.h
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loop.h
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lp.h
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lwtunnel.h
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magic.h
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major.h
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map_to_7segment.h include/: replace HTTP links with HTTPS ones 2020-08-12 10:57:59 -07:00
matroxfb.h
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max2175.h
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mdio.h
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media-bus-format.h
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media.h
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mei.h mei: add connect with vtag ioctl 2020-08-18 15:44:44 +02:00
membarrier.h rseq/membarrier: Add MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ 2020-09-25 14:23:27 +02:00
memfd.h
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mempolicy.h
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meye.h
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mii.h
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minix_fs.h
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mman.h powerpc/8xx: Support 16k hugepages with 4k pages 2020-09-15 22:13:31 +10:00
mmtimer.h
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module.h
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mount.h Add a "nosymfollow" mount option. 2020-08-27 16:06:47 -04:00
mpls.h
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mpls_iptunnel.h
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mptcp.h
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mqueue.h
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mroute.h ipmr: Add high byte of VIF ID to igmpmsg 2020-09-10 12:25:51 -07:00
mroute6.h uapi: move constants from <linux/kernel.h> to <linux/const.h> 2021-01-06 14:56:51 +01:00
mrp_bridge.h
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msdos_fs.h
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msg.h
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mtio.h
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n_r3964.h
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nbd-netlink.h
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nbd.h
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ncsi.h
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ndctl.h
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neighbour.h
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net.h
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net_dropmon.h
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net_namespace.h
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net_tstamp.h
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netconf.h
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netdevice.h
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netfilter.h netfilter: restore NF_INET_NUMHOOKS 2020-10-14 20:28:05 -07:00
netfilter_arp.h
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netfilter_bridge.h
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netfilter_decnet.h
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netfilter_ipv4.h
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netfilter_ipv6.h
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netlink.h uapi: move constants from <linux/kernel.h> to <linux/const.h> 2021-01-06 14:56:51 +01:00
netlink_diag.h
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netrom.h
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nexthop.h
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nfc.h
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nfs.h
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nfs2.h
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nfs3.h
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nfs4.h NFSv4.2: support EXCHGID4_FLAG_SUPP_FENCE_OPS 4.2 EXCHANGE_ID flag 2020-10-16 09:28:43 -04:00
nfs4_mount.h
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nfs_fs.h
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nfs_idmap.h
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nfs_mount.h
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nfsacl.h NFSACL: Replace PROC() macro with open code 2020-10-02 09:37:41 -04:00
nilfs2_api.h
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nilfs2_ondisk.h
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nitro_enclaves.h nitro_enclaves: Add ioctl interface definition 2020-09-22 13:58:40 +02:00
nl80211.h UPSTREAM: cfg80211: Add support to configure SAE PWE value to drivers 2021-02-05 10:54:25 +00:00
nsfs.h
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nubus.h
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nvme_ioctl.h
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nvram.h
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omap3isp.h
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omapfb.h
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oom.h
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openat2.h
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openvswitch.h net: openvswitch: fix TTL decrement action netlink message format 2020-11-27 11:03:06 -08:00
packet_diag.h
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param.h
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parport.h
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patchkey.h
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pci.h
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pci_regs.h Merge branch 'remotes/lorenzo/pci/dwc' 2020-10-21 09:58:39 -05:00
pcitest.h
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perf_event.h FROMLIST: perf: aux: Add CoreSight PMU buffer formats 2021-03-01 12:52:13 -08:00
personality.h
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pfkeyv2.h
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pg.h
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phantom.h
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phonet.h
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pidfd.h pidfd: support PIDFD_NONBLOCK in pidfd_open() 2020-09-04 12:34:50 +02:00
pkt_cls.h net/sched: cls_flower: Reject invalid ct_state flags rules 2021-03-07 12:34:07 +01:00
pkt_sched.h
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pktcdvd.h
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pmu.h
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poll.h
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posix_acl.h
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posix_acl_xattr.h
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posix_types.h
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ppdev.h
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ppp-comp.h
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ppp-ioctl.h
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ppp_defs.h
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pps.h
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pr.h
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prctl.h BACKPORT: arm64: Introduce prctl(PR_PAC_{SET,GET}_ENABLED_KEYS) 2021-07-14 20:52:05 -07:00
psample.h psample: Fix user API breakage 2021-03-30 14:31:53 +02:00
psci.h
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psp-sev.h
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ptp_clock.h
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ptrace.h ptrace: Prevent kernel-infoleak in ptrace_get_syscall_info() 2020-12-21 13:30:06 +01:00
qemu_fw_cfg.h
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qnx4_fs.h
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qnxtypes.h
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qrtr.h
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quota.h
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radeonfb.h
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random.h
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raw.h
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rds.h
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reboot.h
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reiserfs_fs.h
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reiserfs_xattr.h
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remoteproc_cdev.h remoteproc: Add remoteproc character device interface 2020-08-04 20:16:37 -07:00
resource.h
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rfkill.h
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rio_cm_cdev.h
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rio_mport_cdev.h
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romfs_fs.h
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rose.h
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route.h
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rpl.h uapi: fix big endian definition of ipv6_rpl_sr_hdr 2021-02-03 23:28:43 +01:00
rpl_iptunnel.h
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rpmsg.h
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rseq.h
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rtc.h
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rtnetlink.h
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rxrpc.h rxrpc: Fix accept on a connection that need securing 2020-10-05 16:35:57 +01:00
scc.h
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sched.h
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scif_ioctl.h
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screen_info.h
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sctp.h
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sdla.h
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seccomp.h
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securebits.h
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sed-opal.h
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seg6.h
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seg6_genl.h
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seg6_hmac.h
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seg6_iptunnel.h seg6_iptunnel: Refactor seg6_lwt_headroom out of uapi header 2020-08-03 17:57:40 -07:00
seg6_local.h
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selinux_netlink.h
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sem.h
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serial.h
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serial_core.h
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serial_reg.h
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serio.h
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shm.h
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signal.h
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signalfd.h
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smc.h
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smc_diag.h
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smiapp.h
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snmp.h tcp: skip DSACKs with dubious sequence ranges 2020-09-24 20:15:45 -07:00
sock_diag.h
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socket.h
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sockios.h
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sonet.h
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sonypi.h
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sound.h
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soundcard.h
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stat.h uapi: fix statx attribute value overlap for DAX & MOUNT_ROOT 2020-12-03 10:03:14 -08:00
stddef.h
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stm.h
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string.h
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suspend_ioctls.h
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swab.h
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switchtec_ioctl.h
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sync_file.h
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synclink.h
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sysctl.h uapi: move constants from <linux/kernel.h> to <linux/const.h> 2021-01-06 14:56:51 +01:00
sysinfo.h
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target_core_user.h
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taskstats.h
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tcp.h
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tcp_metrics.h
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tee.h driver: tee: Handle NULL pointer indication from client 2020-08-21 08:55:13 +02:00
termios.h
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thermal.h
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time.h
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time_types.h
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timerfd.h
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times.h
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timex.h
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tiocl.h
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tipc.h tipc: add automatic rekeying for encryption key 2020-09-18 13:58:37 -07:00
tipc_config.h
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tipc_netlink.h tipc: add automatic rekeying for encryption key 2020-09-18 13:58:37 -07:00
tipc_sockets_diag.h
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tls.h
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toshiba.h
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tty.h
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tty_flags.h tty: actually undefine superseded ASYNC flags 2021-05-14 09:50:18 +02:00
types.h include/: replace HTTP links with HTTPS ones 2020-08-12 10:57:59 -07:00
udf_fs_i.h
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udmabuf.h
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udp.h
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uhid.h
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uinput.h
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uio.h
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uleds.h
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ultrasound.h
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um_timetravel.h
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un.h
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unistd.h
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unix_diag.h
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usbdevice_fs.h
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usbip.h
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userfaultfd.h FROMGIT: userfaultfd: fix UFFDIO_CONTINUE ioctl request definition 2021-06-04 19:13:43 +00:00
userio.h
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utime.h
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utsname.h
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uuid.h
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uvcvideo.h
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v4l2-common.h
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v4l2-controls.h UPSTREAM: media: v4l: Add HDR10 static metadata controls 2021-06-04 11:15:19 -07:00
v4l2-dv-timings.h
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v4l2-mediabus.h media: v4l2: extend the CSC API to subdevice. 2020-09-26 10:22:29 +02:00
v4l2-subdev.h media: v4l2-subdev.h: BIT() is not available in userspace 2021-01-30 13:55:18 +01:00
vbox_err.h
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vbox_vmmdev_types.h
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vboxguest.h
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veth.h
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vfio.h Merge branches 'v5.10/vfio/fsl-mc-v6' and 'v5.10/vfio/zpci-info-v3' into v5.10/vfio/next 2020-10-12 11:41:02 -06:00
vfio_ccw.h
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vfio_zdev.h vfio: Introduce capability definitions for VFIO_DEVICE_GET_INFO 2020-10-07 14:23:44 -06:00
vhost.h vhost: vdpa: report iova range 2020-10-23 11:55:28 -04:00
vhost_types.h vhost: vdpa: report iova range 2020-10-23 11:55:28 -04:00
videodev2.h UPSTREAM: media: v4l: Add HDR10 static metadata controls 2021-06-04 11:15:19 -07:00
virtio_9p.h virtio_9p: correct tags for config space fields 2020-08-05 09:30:19 -04:00
virtio_balloon.h virtio_balloon: correct tags for config space fields 2020-08-05 09:30:20 -04:00
virtio_blk.h virtio_blk: correct tags for config space fields 2020-08-05 11:08:39 -04:00
virtio_config.h virtio: VIRTIO_F_IOMMU_PLATFORM -> VIRTIO_F_ACCESS_PLATFORM 2020-08-03 16:11:42 -04:00
virtio_console.h virtio_console: correct tags for config space fields 2020-08-05 11:08:39 -04:00
virtio_crypto.h virtio_crypto: correct tags for config space fields 2020-08-05 11:08:39 -04:00
virtio_fs.h virtiofs: set up virtio_fs dax_device 2020-09-10 11:39:22 +02:00
virtio_gpu.h Linux 5.9-rc1 2020-08-18 14:14:25 +02:00
virtio_ids.h
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virtio_input.h virtio_input: correct tags for config space fields 2020-08-05 11:08:40 -04:00
virtio_iommu.h virtio_iommu: correct tags for config space fields 2020-08-05 11:08:40 -04:00
virtio_mem.h virtio_mem: correct tags for config space fields 2020-08-05 11:08:40 -04:00
virtio_mmio.h virtio: Implement get_shm_region for MMIO transport 2020-09-10 10:05:58 +02:00
virtio_net.h virtio_net: use LE accessors for speed/duplex 2020-08-05 11:08:41 -04:00
virtio_pci.h virtio: Implement get_shm_region for PCI transport 2020-09-10 10:05:58 +02:00
virtio_pmem.h virtio_pmem: correct tags for config space fields 2020-08-05 11:08:40 -04:00
virtio_ring.h
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virtio_rng.h
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virtio_scsi.h virtio_scsi: correct tags for config space fields 2020-08-05 11:08:40 -04:00
virtio_types.h
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virtio_vsock.h
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vm_sockets.h
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vm_sockets_diag.h
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vmcore.h
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vsockmon.h
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vt.h
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vtpm_proxy.h
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wait.h
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watch_queue.h
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watchdog.h
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wimax.h
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wireguard.h
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wireless.h
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wmi.h
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x25.h
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xattr.h
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xdp_diag.h
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xfrm.h
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xilinx-v4l2-controls.h
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zorro.h
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zorro_ids.h
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