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Beau Belgrave 7f5a08c79d user_events: Add minimal support for trace_event into ftrace 
Minimal support for interacting with dynamic events, trace_event and
ftrace. Core outline of flow between user process, ioctl and trace_event
APIs.

User mode processes that wish to use trace events to get data into
ftrace, perf, eBPF, etc are limited to uprobes today. The user events
features enables an ABI for user mode processes to create and write to
trace events that are isolated from kernel level trace events. This
enables a faster path for tracing from user mode data as well as opens
managed code to participate in trace events, where stub locations are
dynamic.

User processes often want to trace only when it's useful. To enable this
a set of pages are mapped into the user process space that indicate the
current state of the user events that have been registered. User
processes can check if their event is hooked to a trace/probe, and if it
is, emit the event data out via the write() syscall.

Two new files are introduced into tracefs to accomplish this:
user_events_status - This file is mmap'd into participating user mode
processes to indicate event status.

user_events_data - This file is opened and register/delete ioctl's are
issued to create/open/delete trace events that can be used for tracing.

The typical scenario is on process start to mmap user_events_status. Processes
then register the events they plan to use via the REG ioctl. The ioctl reads
and updates the passed in user_reg struct. The status_index of the struct is
used to know the byte in the status page to check for that event. The
write_index of the struct is used to describe that event when writing out to
the fd that was used for the ioctl call. The data must always include this
index first when writing out data for an event. Data can be written either by
write() or by writev().

For example, in memory:
int index;
char data[];

Psuedo code example of typical usage:
struct user_reg reg;

int page_fd = open("user_events_status", O_RDWR);
char *page_data = mmap(NULL, PAGE_SIZE, PROT_READ, MAP_SHARED, page_fd, 0);
close(page_fd);

int data_fd = open("user_events_data", O_RDWR);

reg.size = sizeof(reg);
reg.name_args = (__u64)"test";

ioctl(data_fd, DIAG_IOCSREG, &reg);
int status_id = reg.status_index;
int write_id = reg.write_index;

struct iovec io[2];
io[0].iov_base = &write_id;
io[0].iov_len = sizeof(write_id);
io[1].iov_base = payload;
io[1].iov_len = sizeof(payload);

if (page_data[status_id])
	writev(data_fd, io, 2);

User events are also exposed via the dynamic_events tracefs file for
both create and delete. Current status is exposed via the user_events_status
tracefs file.

Simple example to register a user event via dynamic_events:
	echo u:test >> dynamic_events
	cat dynamic_events
	u:test

If an event is hooked to a probe, the probe hooked shows up:
	echo 1 > events/user_events/test/enable
	cat user_events_status
	1:test # Used by ftrace

	Active: 1
	Busy: 1
	Max: 4096

If an event is not hooked to a probe, no probe status shows up:
	echo 0 > events/user_events/test/enable
	cat user_events_status
	1:test

	Active: 1
	Busy: 0
	Max: 4096

Users can describe the trace event format via the following format:
	name[:FLAG1[,FLAG2...] [field1[;field2...]]

Each field has the following format:
	type name

Example for char array with a size of 20 named msg:
	echo 'u:detailed char[20] msg' >> dynamic_events
	cat dynamic_events
	u:detailed char[20] msg

Data offsets are based on the data written out via write() and will be
updated to reflect the correct offset in the trace_event fields. For dynamic
data it is recommended to use the new __rel_loc data type. This type will be
the same as __data_loc, but the offset is relative to this entry. This allows
user_events to not worry about what common fields are being inserted before
the data.

The above format is valid for both the ioctl and the dynamic_events file.

Link: https://lkml.kernel.org/r/20220118204326.2169-2-beaub@linux.microsoft.com

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Beau Belgrave <beaub@linux.microsoft.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
 		2022-02-10 22:36:46 -05:00
..
android binder: fix freeze race 2021-09-14 08:46:08 +02:00
byteorder uapi: Fix undefined __always_inline on non-glibc systems 2021-12-21 15:09:46 -08:00
caif net: caif: drop duplicate words in comments 2020-07-15 20:34:11 -07:00
can can: netlink: report the CAN controller mode supported flags 2022-01-05 12:09:06 +01:00
cifs cifs: remove pathname for file from SPDX header 2021-09-13 14:51:10 -05:00
dvb Revert "media: dvb header files: move some headers to staging" 2021-08-23 09:49:09 -07:00
genwqe
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hdlc
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hsi
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iio iio: buffer: add ioctl() to support opening extra buffers for IIO device 2021-03-11 20:47:05 +00:00
isdn
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misc bcm-vk: add bcm_vk UAPI 2021-01-25 18:44:44 +01:00
mmc
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netfilter netfilter: nft_payload: support for inner header matching / mangling 2021-11-01 09:31:03 +01:00
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 NFSD: move filehandle format declarations out of "uapi". 2021-10-02 15:50:45 -04:00
raid raid: md_p.h: drop duplicated word in a comment 2020-07-21 22:05:32 -07:00
sched sched/uclamp: Allow to reset a task uclamp constraint value 2020-11-19 11:25:47 +01:00
spi spi: Add SPI_NO_TX/RX support 2020-12-28 14:21:31 +00:00
sunrpc
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surface_aggregator platform/surface: aggregator_cdev: Allow enabling of events from user-space 2021-06-16 17:47:53 +02:00
tc_act net/sched: act_skbmod: Add SKBMOD_F_ECN option support 2021-07-28 13:19:31 +01:00
tc_ematch
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usb usb: webcam: Invalid size of Processing Unit Descriptor 2021-03-18 09:02:27 +01:00
a.out.h
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acct.h
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acrn.h virt: acrn: Introduce interfaces for virtual device creating/destroying 2021-10-05 16:14:10 +02:00
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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amt.h amt: add control plane of amt interface 2021-11-01 13:36:08 +00:00
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 atm: Replace HTTP links with HTTPS ones 2020-07-13 17:01:44 -07:00
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 audit: replace zero-length array with flexible-array member 2021-12-20 14:53:27 -05:00
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 uapi/auxvec: Define the aux vector AT_MINSIGSTKSZ 2021-05-19 11:40:15 +02:00
ax25.h
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batadv_packet.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
batman_adv.h batman-adv: Drop publication years from copyright info 2021-02-06 09:22:10 +01:00
baycom.h
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bcm933xx_hcs.h
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bfs_fs.h
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binfmts.h binfmt_misc: pass binfmt_misc flags to the interpreter 2021-02-15 18:28:30 +01:00
blkpg.h block: update a few comments in uapi/linux/blkpg.h 2021-04-02 11:18:30 -06:00
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: Add get_func_[arg|ret|arg_cnt] helpers 2021-12-13 09:25:59 -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 bpf: Support BTF_KIND_TYPE_TAG for btf_type_tag attributes 2021-11-11 17:41:11 -08:00
btrfs.h btrfs: send: prepare for v2 protocol 2021-10-29 12:38:43 +02:00
btrfs_tree.h btrfs: remove no longer needed logic for replaying directory deletes 2022-01-03 15:09:42 +01:00
can.h can: uapi: introduce CANFD_FDF flag for mixed content in struct canfd_frame 2021-05-27 09:42:21 +02:00
capability.h exit/bdflush: Remove the deprecated bdflush system call 2021-07-12 15:17:47 -05:00
capi.h
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cciss_defs.h
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cciss_ioctl.h
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ccs.h media: v4l: uapi: ccs: Add CCS controls for shading correction 2021-01-12 17:31:14 +01:00
cdrom.h drivers/cdrom: improved ioctl for media change detection 2021-09-14 20:05:26 -06:00
cec-funcs.h media: uapi/linux/cec-funcs.h: set delay to 1 if unnused 2021-06-02 14:08:09 +02:00
cec.h media: include/uapi/linux/cec.h: typo: SATERDAY -> SATURDAY 2021-07-12 09:16:29 +02:00
cfm_bridge.h bridge: cfm: Kernel space implementation of CFM. CCM frame RX added. 2020-10-29 18:39:43 -07:00
cgroupstats.h
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chio.h
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close_range.h fs, close_range: add flag CLOSE_RANGE_CLOEXEC 2020-12-04 12:06:15 +01:00
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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comedi.h comedi: Move the main COMEDI headers 2021-11-26 16:48:59 +01:00
connector.h
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const.h uapi: move constants from <linux/kernel.h> to <linux/const.h> 2020-12-15 12:13:36 -08:00
coresight-stm.h coresight: stm: Support marked packet 2020-09-17 18:46:04 +02:00
counter.h counter: Add character device interface 2021-10-17 10:53:52 +01:00
cramfs_fs.h
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cryptouser.h
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cuda.h
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cxl_mem.h cxl/uapi: Fix defined but not used warnings 2021-09-07 11:39:01 -07:00
cycx_cfm.h
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dcbnl.h
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dccp.h
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devlink.h devlink: report maximum number of snapshots with regions 2021-10-01 14:28:55 +01:00
dlm.h
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dlm_device.h treewide: Replace 0-element memcpy() destinations with flexible arrays 2021-10-18 12:28:53 -07:00
dlm_netlink.h
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dlm_plock.h
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dlmconstants.h
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dm-ioctl.h dm ima: measure data on table load 2021-08-10 13:32:40 -04:00
dm-log-userspace.h
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dma-buf.h dma-buf: Document DMA_BUF_IOCTL_SYNC (v3) 2021-06-17 21:46:37 +02:00
dma-heap.h
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dn.h
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dns_resolver.h
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dqblk_xfs.h quota: report warning limits for realtime space quotas 2021-03-18 17:03:54 +01:00
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 arm64: Introduce prctl(PR_PAC_{SET,GET}_ENABLED_KEYS) 2021-04-13 17:31:44 +01:00
errno.h
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errqueue.h icmp: support rfc 4884 2020-07-19 19:20:22 -07:00
erspan.h
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ethtool.h ethtool: add support to set/get tx copybreak buf size via ethtool 2021-11-22 12:31:47 +00:00
ethtool_netlink.h ethtool: add support to set/get rx buf len via ethtool 2021-11-22 12:31:48 +00:00
eventpoll.h
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f2fs.h f2fs: add F2FS_IOC_DECOMPRESS_FILE and F2FS_IOC_COMPRESS_FILE 2020-12-03 00:12:08 -08:00
fadvise.h
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falloc.h
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fanotify.h fanotify: report old and/or new parent+name in FAN_RENAME event 2021-12-15 15:57:31 +01:00
fb.h drm/fb-helper: Fix vt restore 2020-06-24 21:34:11 +02:00
fcntl.h
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fd.h floppy: cleanups: remove trailing whitespaces 2021-04-20 08:59:03 -06:00
fdreg.h
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fib_rules.h
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fiemap.h A lot of bug fixes and cleanups for ext4, including: 2020-06-05 16:19:28 -07:00
filter.h
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firewire-cdev.h include/linux: remove repeated words 2021-02-26 09:41:03 -08:00
firewire-constants.h
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fou.h
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fpga-dfl.h fpga: dfl: afu: add AFU interrupt support 2020-07-06 21:37:08 -07:00
fs.h block: add ioctl to read the disk sequence number 2021-08-02 13:37:28 -06:00
fscrypt.h fscrypt: remove kernel-internal constants from UAPI header 2020-11-16 11:41:12 -08:00
fsi.h
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fsl_hypervisor.h
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fsl_mc.h bus: fsl-mc: add fsl-mc userspace support 2021-01-27 15:13:52 +01:00
fsmap.h
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fsverity.h fs-verity: support reading signature with ioctl 2021-02-07 14:51:19 -08:00
fuse.h fuse: support per inode DAX in fuse protocol 2021-12-14 11:09:36 +01:00
futex.h futex: Implement sys_futex_waitv() 2021-10-07 13:51:11 +02:00
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 gfs2: Add trusted xattr support 2021-02-08 13:01:24 +01:00
gpio.h gpio: uapi: use the preferred SPDX license identifier 2021-02-15 11:43:33 +01:00
gsmmux.h
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gtp.h Revert "GTP: add support for flow based tunneling API" 2021-02-04 09:29:57 -08:00
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 HID: hidraw: Add additional hidraw input/output report ioctls. 2020-11-27 15:48:31 +01:00
hpet.h
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hsr_netlink.h hsr: enhance netlink socket interface to support PRP 2020-07-27 12:20:40 -07:00
hw_breakpoint.h
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hyperv.h hyper-v: Replace uuid.h with types.h 2021-10-06 12:05:51 +00:00
i2c-dev.h Revert "Merge branch 'mctp-i2c-driver'" 2021-11-15 07:53:10 -08:00
i2c.h Revert "Merge branch 'mctp-i2c-driver'" 2021-11-15 07:53:10 -08:00
i2o-dev.h
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i8k.h
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icmp.h icmp: fix lib conflict with trinity 2021-06-03 15:31:34 -07:00
icmpv6.h ICMPV6: add support for RFC 8335 PROBE 2021-03-30 13:29:39 -07:00
idxd.h dmaengine: idxd: change MSIX allocation based on per wq activation 2022-01-05 13:11:22 +05:30
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 2020-11-06 14:29:11 +11:00
if_arcnet.h
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if_arp.h mctp: Add initial driver infrastructure 2021-07-29 15:06:50 +01:00
if_bonding.h treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
if_bridge.h net: bridge: vlan: convert mcast router global option to per-vlan entry 2021-08-20 15:00:35 +01:00
if_cablemodem.h
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if_eql.h
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if_ether.h Fix Comment of ETH_P_802_3_MIN 2021-12-02 12:07:04 +00:00
if_fc.h
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if_fddi.h FDDI: if_fddi.h: Update my e-mail address 2021-03-10 12:45:16 -08:00
if_hippi.h
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if_infiniband.h
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if_link.h gro: add ability to control gro max packet size 2022-01-06 12:27:05 +00:00
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 2020-11-09 16:41:40 -08:00
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 Revert "GTP: add support for flow based tunneling API" 2021-02-04 09:29:57 -08:00
if_vlan.h
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if_x25.h
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if_xdp.h xsk: Add new statistics 2020-07-13 15:32:56 -07:00
ife.h
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igmp.h
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ila.h
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in.h net/ipv4/ipv6: Replace one-element arraya with flexible-array members 2021-08-05 11:46:42 +01:00
in6.h ipv6: ioam: Data plane support for Pre-allocated Trace 2021-07-21 08:14:33 -07:00
in_route.h
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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 HID: hid-input: add mapping for emoji picker key 2021-05-05 14:31:05 +02:00
input.h include/linux: remove repeated words 2021-02-26 09:41:03 -08:00
io_uring.h io_uring: add option to skip CQE posting 2021-11-24 11:17:53 -07:00
ioam6.h ipv6: ioam: Support for IOAM injection with lwtunnels 2021-07-21 08:14:33 -07:00
ioam6_genl.h ipv6: ioam: IOAM Generic Netlink API 2021-07-21 08:14:33 -07:00
ioam6_iptunnel.h ipv6: ioam: Add support for the ip6ip6 encapsulation 2021-10-04 12:53:35 +01:00
ioctl.h
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iommu.h iommu/vt-d: Enable write protect propagation from guest 2021-03-18 11:42:46 +01:00
ioprio.h block: fix default IO priority handling 2021-08-18 07:23:15 -06:00
ip.h net: arp: introduce arp_evict_nocarrier sysctl parameter 2021-11-01 19:57:14 -07:00
ip6_tunnel.h
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ip_vs.h
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ipc.h
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ipmi.h ipmi: Add support for IPMB direct messages 2021-10-05 06:54:16 -05:00
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 net: ndisc: introduce ndisc_evict_nocarrier sysctl parameter 2021-11-01 19:57:14 -07:00
ipv6_route.h
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irqnr.h
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iso_fs.h
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isst_if.h platform/x86: ISST: drop a duplicated word in isst_if.h 2020-07-27 16:34:12 +03:00
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 console: Delete unused con_font_copy() callback implementations 2020-11-16 16:27:03 +01:00
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> 2020-12-15 12:13:36 -08:00
kernelcapi.h
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kexec.h RISC-V: Add EM_RISCV to kexec UAPI header 2021-04-26 08:25:20 -07:00
keyboard.h vt: keyboard, sort key types by their number 2020-11-04 16:43:38 +01:00
keyctl.h
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kfd_ioctl.h drm/amdkfd: Allow querying SVM attributes that are clear 2021-08-06 16:12:32 -04:00
kfd_sysfs.h drm/amdkfd: make SPDX License expression more sound 2022-01-11 15:44:27 -05:00
kvm.h kvm: x86: Add support for getting/setting expanded xstate buffer 2022-01-14 13:44:41 -05:00
kvm_para.h KVM: X86: Introduce KVM_HC_MAP_GPA_RANGE hypercall 2021-06-17 14:25:39 -04:00
l2tp.h net: l2tp: reduce log level of messages in receive path, add counter instead 2021-03-03 16:55:02 -08:00
landlock.h landlock: Enable user space to infer supported features 2021-04-22 12:22:11 -07:00
libc-compat.h
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limits.h
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lirc.h media: lirc: remove out of date comment 2021-05-21 15:03:50 +02:00
llc.h
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loop.h
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lp.h
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lwtunnel.h ipv6: ioam: Support for IOAM injection with lwtunnels 2021-07-21 08:14:33 -07:00
magic.h The highlight is the new mount "device" string syntax implemented 2022-01-20 13:46:20 +02:00
major.h tty: cyclades, remove this orphan 2021-03-10 09:34:06 +01:00
map_to_7segment.h uapi: map_to_7segment: Remove licence boilerplate 2021-03-24 08:26:29 +01:00
map_to_14segment.h uapi: Add <linux/map_to_14segment.h> 2021-10-21 23:36:28 +02:00
matroxfb.h
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max2175.h
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mctp.h mctp: Implement extended addressing 2021-10-26 14:58:45 +01:00
mdio.h net: phy: add constants for fast retrain related register 2021-10-25 14:04:18 +01:00
media-bus-format.h media updates for v5.11-rc1 2020-12-14 11:47:37 -08:00
media.h media: uapi: Add an entity type for Image Signal Processors 2021-01-12 17:05:37 +01:00
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 mm/mempolicy: add MPOL_PREFERRED_MANY for multiple preferred nodes 2021-09-03 09:58:17 -07:00
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 module: add in-kernel support for decompressing 2022-01-11 18:45:02 -08:00
mount.h move_mount: allow to add a mount into an existing group 2021-07-26 14:45:18 +02:00
mpls.h
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mpls_iptunnel.h
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mptcp.h mptcp: add missing documented NL params 2021-12-14 18:49:40 -08:00
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> 2020-12-15 12:13:36 -08:00
mrp_bridge.h net: mrp: move struct definitions out of uapi 2021-01-23 12:38:42 -08:00
msdos_fs.h
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msg.h
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mtio.h
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nbd-netlink.h nbd: provide a way for userspace processes to identify device backends 2021-06-30 15:34:04 -06:00
nbd.h
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ncsi.h
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ndctl.h ACPI: NFIT: Define runtime firmware activation commands 2020-07-25 19:34:47 -06:00
neighbour.h net, neigh: Add NTF_MANAGED flag for managed neighbor entries 2021-10-12 11:27:47 +01:00
net.h Revert "net: add pf_family_names[] for protocol family" 2021-06-18 13:02:45 -07:00
net_dropmon.h
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net_namespace.h
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net_tstamp.h net_tstamp: define new flag HWTSTAMP_FLAG_BONDED_PHC_INDEX 2021-12-29 12:31:36 -08:00
netconf.h
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netdevice.h
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netfilter.h netfilter: Introduce egress hook 2021-10-14 23:06:28 +02:00
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 netlink: simplify NLMSG_DATA with NLMSG_HDRLEN 2021-06-10 12:51:33 -07:00
netlink_diag.h
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netrom.h
…
nexthop.h nexthop: Add netlink defines and enumerators for resilient NH groups 2021-03-11 16:12:59 -08:00
nfc.h nfc: uapi: use kernel size_t to fix user-space builds 2021-12-27 14:58:37 +00:00
nfs.h
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nfs2.h
…
nfs3.h NFSD: Update the SETATTR3args decoder to use struct xdr_stream 2021-01-25 09:36:25 -05:00
nfs4.h treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
nfs4_mount.h
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nfs_fs.h NFSv4.2: add client side xattr caching. 2020-07-13 17:52:46 -04:00
nfs_idmap.h
…
nfs_mount.h
…
nfsacl.h NFSACL: Replace PROC() macro with open code 2020-10-02 09:37:41 -04:00
nilfs2_api.h
…
nilfs2_ondisk.h
…
nitro_enclaves.h nitro_enclaves: Add fixes for checkpatch spell check reports 2021-09-14 11:11:20 +02:00
nl80211-vnd-intel.h nl80211: vendor-cmd: intel: add more details for IWL_MVM_VENDOR_CMD_HOST_GET_OWNERSHIP 2021-10-21 17:25:17 +02:00
nl80211.h nl80211: clarify comment for mesh PLINK_BLOCKED state 2022-01-04 15:50:23 +01:00
nsfs.h
…
nubus.h
…
nvme_ioctl.h
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nvram.h
…
omap3isp.h
…
omapfb.h
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oom.h
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openat2.h fs: expose LOOKUP_CACHED through openat2() RESOLVE_CACHED 2021-01-04 11:42:26 -05:00
openvswitch.h openvswitch: fix alignment issues 2021-07-27 11:48:42 +01:00
packet_diag.h
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param.h
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parport.h
…
patchkey.h
…
pci.h
…
pci_regs.h pci-v5.17-changes 2022-01-16 08:08:11 +02:00
pcitest.h PCI: Fix kernel-doc formatting 2021-07-06 10:37:46 -05:00
perf_event.h perf: Add new macros for mem_hops field 2021-12-16 21:31:44 +11:00
personality.h
…
pfkeyv2.h xfrm: Add support for SM4 symmetric cipher algorithm 2021-12-23 09:32:51 +01:00
pfrut.h ACPI: Introduce Platform Firmware Runtime Telemetry driver 2021-12-27 17:12:58 +01:00
pg.h
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phantom.h
…
phonet.h
…
pidfd.h pidfd: support PIDFD_NONBLOCK in pidfd_open() 2020-09-04 12:34:50 +02:00
pkt_cls.h flow_offload: add skip_hw and skip_sw to control if offload the action 2021-12-19 14:08:48 +00:00
pkt_sched.h fq_codel: generalise ce_threshold marking for subset of traffic 2021-10-20 15:24:36 -07:00
pktcdvd.h
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pmu.h
…
poll.h
…
posix_acl.h
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posix_acl_xattr.h
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posix_types.h
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ppdev.h
…
ppp-comp.h
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ppp-ioctl.h ppp: Fix PPPIOCUNBRIDGECHAN request number 2020-12-21 17:36:48 -08:00
ppp_defs.h
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pps.h
…
pr.h
…
prctl.h mm: add a field to store names for private anonymous memory 2022-01-15 16:30:27 +02:00
psample.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-03-25 15:31:22 -07:00
psci.h
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psp-sev.h
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ptp_clock.h ptp: introduce a phase offset in the periodic output request 2020-07-19 19:22:56 -07:00
ptrace.h rseq, ptrace: Add PTRACE_GET_RSEQ_CONFIGURATION request 2021-03-17 16:15:39 +01:00
qemu_fw_cfg.h
…
qnx4_fs.h
…
qnxtypes.h
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qrtr.h
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quota.h
…
radeonfb.h
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random.h
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rds.h rds: transport module should be auto loaded when transport is set 2020-06-25 16:26:25 -07:00
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 Increase default MLOCK_LIMIT to 8 MiB 2021-12-10 17:10:55 -08:00
rfkill.h rfkill: revert back to old userspace API by default 2021-04-08 10:14:45 +02:00
rio_cm_cdev.h
…
rio_mport_cdev.h
…
rkisp1-config.h media: rkisp1: uapi: document which flags/structs relate to statistics config 2021-04-06 10:29:56 +02:00
romfs_fs.h
…
rose.h
…
route.h
…
rpl.h uapi: fix big endian definition of ipv6_rpl_sr_hdr 2021-01-25 15:14:16 -08:00
rpl_iptunnel.h
…
rpmsg.h rpmsg: Add short description of the IOCTL defined in UAPI. 2021-03-17 14:16:26 -05:00
rpmsg_types.h rpmsg: Introduce __rpmsg{16|32|64} types 2020-11-24 10:10:59 -06:00
rseq.h
…
rtc.h rtc: add BSM parameter 2021-10-18 17:20:50 +02:00
rtnetlink.h mctp: emit RTM_NEWADDR and RTM_DELADDR 2021-12-20 18:40:48 -08:00
rxrpc.h rxrpc: Fix accept on a connection that need securing 2020-10-05 16:35:57 +01:00
scc.h
…
sched.h
…
scif_ioctl.h
…
screen_info.h
…
sctp.h sctp: add SCTP_PLPMTUD_PROBE_INTERVAL sockopt for sock/asoc/transport 2021-06-22 11:28:51 -07:00
seccomp.h seccomp: Support atomic "addfd + send reply" 2021-06-28 12:49:52 -07:00
securebits.h
…
sed-opal.h
…
seg6.h
…
seg6_genl.h
…
seg6_hmac.h
…
seg6_iptunnel.h seg6_iptunnel: Refactor seg6_lwt_headroom out of uapi header 2020-08-03 17:57:40 -07:00
seg6_local.h seg6: add support for SRv6 End.DT46 Behavior 2021-06-18 11:35:47 -07:00
selinux_netlink.h
…
sem.h
…
serial.h tty: cyclades, remove this orphan 2021-03-10 09:34:06 +01:00
serial_core.h tty: serial: Drop unused efm32 serial driver 2021-01-15 17:14:49 +01:00
serial_reg.h serial: 8250: Define RX trigger levels for OxSemi 950 devices 2021-07-27 12:05:46 +02:00
serio.h
…
shm.h
…
signal.h
…
signalfd.h signalfd: Remove SIL_PERF_EVENT fields from signalfd_siginfo 2021-05-18 16:20:54 -05:00
smc.h net/smc: Add netlink net namespace support 2022-01-02 12:07:39 +00:00
smc_diag.h net/smc: Add netlink net namespace support 2022-01-02 12:07:39 +00:00
smiapp.h
…
snmp.h Revert "net: snmp: add statistics for tcp small queue check" 2021-12-01 19:06:09 -08:00
sock_diag.h
…
socket.h sock: allow reading and changing sk_userlocks with setsockopt 2021-08-04 12:52:03 +01:00
sockios.h
…
sonet.h
…
sonypi.h
…
sound.h
…
soundcard.h kbuild: move headers_check.pl to usr/include/ 2022-01-08 17:41:00 +09:00
stat.h uapi: fix statx attribute value overlap for DAX & MOUNT_ROOT 2020-12-03 10:03:14 -08:00
stddef.h stddef: Introduce DECLARE_FLEX_ARRAY() helper 2021-10-18 12:28:52 -07:00
stm.h
…
string.h
…
suspend_ioctls.h
…
swab.h
…
switchtec_ioctl.h
…
sync_file.h
…
synclink.h
…
sysctl.h net: arp: introduce arp_evict_nocarrier sysctl parameter 2021-11-01 19:57:14 -07:00
sysinfo.h
…
target_core_user.h scsi: target: tcmu: Add new feature KEEP_BUF 2021-08-03 07:27:42 -04:00
taskstats.h delayacct: track delays from memory compact 2022-01-20 08:52:55 +02:00
tcp.h tcp: Sanitize CMSG flags and reserved args in tcp_zerocopy_receive. 2021-02-11 18:25:05 -08:00
tcp_metrics.h
…
tee.h tee: fix some comment typos in header files 2021-02-02 14:50:15 +01:00
termios.h tty: drop termiox user definitions 2021-01-07 16:17:32 +01:00
thermal.h thermal: Fix spelling mistake "disabed" -> "disabled" 2021-03-11 12:13:08 +01:00
time.h
…
time_types.h
…
timerfd.h
…
times.h
…
timex.h
…
tiocl.h
…
tipc.h tipc: add automatic rekeying for encryption key 2020-09-18 13:58:37 -07:00
tipc_config.h
…
tipc_netlink.h tipc: add automatic rekeying for encryption key 2020-09-18 13:58:37 -07:00
tipc_sockets_diag.h
…
tls.h net/tls: support SM4 GCM/CCM algorithm 2021-09-16 14:36:26 +01:00
toshiba.h
…
tty.h mctp: Add MCTP-over-serial transport binding 2021-11-23 11:47:51 +00:00
tty_flags.h tty: add ASYNC_SPLIT_TERMIOS to deprecation mask 2021-04-10 10:36:34 +02:00
types.h include/: replace HTTP links with HTTPS ones 2020-08-12 10:57:59 -07:00
udf_fs_i.h
…
udmabuf.h
…
udp.h
…
uhid.h
…
uinput.h
…
uio.h
…
uleds.h
…
ultrasound.h
…
um_timetravel.h
…
un.h
…
unistd.h
…
unix_diag.h
…
usbdevice_fs.h
…
usbip.h
…
user_events.h user_events: Add minimal support for trace_event into ftrace 2022-02-10 22:36:46 -05:00
userfaultfd.h userfaultfd/shmem: advertise shmem minor fault support 2021-06-30 20:47:27 -07:00
userio.h
…
utime.h
…
utsname.h
…
uuid.h uuid: remove licence boilerplate text from the header 2022-01-20 08:52:54 +02:00
uvcvideo.h media: vpbe_osd.h/uvcvideo.h includes: fix trivial kernel-doc warnings 2021-03-22 10:24:07 +01:00
v4l2-common.h
…
v4l2-controls.h media: uapi: Add VP9 stateless decoder controls 2021-11-22 07:44:55 +00:00
v4l2-dv-timings.h
…
v4l2-mediabus.h media: v4l2: extend the CSC API to subdevice. 2020-09-26 10:22:29 +02:00
v4l2-subdev.h media: core headers: fix kernel-doc warnings 2021-03-22 10:22:22 +01:00
vbox_err.h
…
vbox_vmmdev_types.h virt: vbox: Add a few new vmmdev request types to the userspace whitelist 2020-07-10 13:45:32 +02:00
vboxguest.h virt: vbox: Add support for the new VBG_IOCTL_ACQUIRE_GUEST_CAPABILITIES ioctl 2020-07-10 13:45:32 +02:00
vdpa.h vdpa: Support reporting max device capabilities 2022-01-14 18:50:54 -05:00
vduse.h vduse: Introduce VDUSE - vDPA Device in Userspace 2021-09-06 07:20:58 -04:00
veth.h
…
vfio.h vfio/pci: Revert nvlink removal uAPI breakage 2021-05-05 10:19:41 -06:00
vfio_ccw.h vfio-ccw: Introduce a new CRW region 2020-06-03 11:27:43 +02:00
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 media: uapi: Add VP9 stateless decoder controls 2021-11-22 07:44:55 +00:00
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_bt.h Bluetooth: Add support for virtio transport driver 2021-04-08 12:26:34 +02:00
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_gpio.h virtio_gpio: drop packed attribute 2021-11-04 16:36:54 +01:00
virtio_gpu.h virtio-gpu api: multiple context types with explicit initialization 2021-09-29 09:22:29 +02:00
virtio_i2c.h i2c: virtio: Add support for zero-length requests 2021-11-01 05:26:48 -04:00
virtio_ids.h virtio,vdpa,vhost: features, fixes 2021-09-11 14:48:42 -07:00
virtio_input.h virtio_input: correct tags for config space fields 2020-08-05 11:08:40 -04:00
virtio_iommu.h iommu/virtio: Add definitions for VIRTIO_IOMMU_F_BYPASS_CONFIG 2021-12-06 15:03:05 +01:00
virtio_mem.h virtio-mem: support VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE 2021-11-10 15:32:38 +01:00
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_pcidev.h um: virt-pci: fix uapi documentation 2021-08-26 22:28:03 +02:00
virtio_pmem.h virtio_pmem: correct tags for config space fields 2020-08-05 11:08:40 -04:00
virtio_ring.h
…
virtio_rng.h
…
virtio_scmi.h firmware: arm_scmi: Add virtio transport 2021-08-05 10:24:08 +01:00
virtio_scsi.h virtio_scsi: correct tags for config space fields 2020-08-05 11:08:40 -04:00
virtio_snd.h ALSA: virtio: add virtio sound driver 2021-03-07 09:07:16 +01:00
virtio_types.h
…
virtio_vsock.h virtio/vsock: add 'VIRTIO_VSOCK_SEQ_EOR' bit. 2021-09-05 16:23:09 -04:00
vm_sockets.h vsock: Enable y2038 safe timeval for timeout 2021-10-08 16:21:53 +01:00
vm_sockets_diag.h
…
vmcore.h
…
vsockmon.h
…
vt.h
…
vtpm_proxy.h
…
wait.h
…
watch_queue.h
…
watchdog.h
…
wireguard.h
…
wireless.h net/wireless: wireless.h: drop duplicate word in comments 2020-07-31 09:24:23 +02:00
wmi.h
…
wwan.h wwan: add interface creation support 2021-06-12 13:16:45 -07:00
x25.h
…
xattr.h ext4: support xattr gnu.* namespace for the Hurd 2020-06-12 13:23:34 -04:00
xdp_diag.h xsk: Add xdp statistics to xsk_diag 2020-07-13 15:32:56 -07:00
xfrm.h xfrm: rate limit SA mapping change message to user space 2021-12-23 09:32:51 +01:00
xilinx-v4l2-controls.h
…
zorro.h
…
zorro_ids.h
…