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usr /
src /
linux-headers-5.15.0-25 /
include /
linux /
[ HOME SHELL ]
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amba
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drwxr-xr-x
atomic
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drwxr-xr-x
avf
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drwxr-xr-x
bcma
[ DIR ]
drwxr-xr-x
byteorder
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drwxr-xr-x
can
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drwxr-xr-x
ceph
[ DIR ]
drwxr-xr-x
clk
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drwxr-xr-x
crush
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decompress
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device
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dma
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dsa
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fpga
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fsl
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gpio
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greybus
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hsi
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i3c
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iio
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input
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irqchip
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isdn
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lockd
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mailbox
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mfd
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mlx4
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mmc
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mtd
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mux
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net
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netfilter
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netfilter_arp
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netfilter_bridge
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drwxr-xr-x
netfilter_ipv4
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netfilter_ipv6
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pcs
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perf
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phy
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pinctrl
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platform_data
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power
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qed
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raid
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regulator
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remoteproc
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drwxr-xr-x
reset
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rpmsg
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rtc
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drwxr-xr-x
sched
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drwxr-xr-x
soc
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drwxr-xr-x
soundwire
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drwxr-xr-x
spi
[ DIR ]
drwxr-xr-x
ssb
[ DIR ]
drwxr-xr-x
sunrpc
[ DIR ]
drwxr-xr-x
surface_aggregator
[ DIR ]
drwxr-xr-x
ulpi
[ DIR ]
drwxr-xr-x
unaligned
[ DIR ]
drwxr-xr-x
usb
[ DIR ]
drwxr-xr-x
8250_pci.h
1.01
KB
-rw-r--r--
a.out.h
354
B
-rw-r--r--
acct.h
2.49
KB
-rw-r--r--
acpi.h
39.5
KB
-rw-r--r--
acpi_dma.h
3.08
KB
-rw-r--r--
acpi_iort.h
2.27
KB
-rw-r--r--
acpi_mdio.h
631
B
-rw-r--r--
acpi_pmtmr.h
674
B
-rw-r--r--
acpi_viot.h
389
B
-rw-r--r--
adb.h
1.79
KB
-rw-r--r--
adfs_fs.h
574
B
-rw-r--r--
adreno-smmu-priv.h
2.74
KB
-rw-r--r--
adxl.h
310
B
-rw-r--r--
aer.h
1.78
KB
-rw-r--r--
agp_backend.h
3.45
KB
-rw-r--r--
agpgart.h
3.79
KB
-rw-r--r--
ahci-remap.h
607
B
-rw-r--r--
ahci_platform.h
1.54
KB
-rw-r--r--
aio.h
651
B
-rw-r--r--
alarmtimer.h
1.94
KB
-rw-r--r--
alcor_pci.h
8.83
KB
-rw-r--r--
align.h
552
B
-rw-r--r--
altera_jtaguart.h
379
B
-rw-r--r--
altera_uart.h
397
B
-rw-r--r--
amd-iommu.h
6.18
KB
-rw-r--r--
anon_inodes.h
670
B
-rw-r--r--
apm-emulation.h
1.56
KB
-rw-r--r--
apm_bios.h
2.25
KB
-rw-r--r--
apple-gmux.h
918
B
-rw-r--r--
apple_bl.h
498
B
-rw-r--r--
arch_topology.h
2.49
KB
-rw-r--r--
arm-cci.h
1.36
KB
-rw-r--r--
arm-smccc.h
17.7
KB
-rw-r--r--
arm_ffa.h
7.36
KB
-rw-r--r--
arm_sdei.h
2.51
KB
-rw-r--r--
armada-37xx-rwtm-mailbox.h
431
B
-rw-r--r--
ascii85.h
555
B
-rw-r--r--
asn1.h
1.79
KB
-rw-r--r--
asn1_ber_bytecode.h
2.52
KB
-rw-r--r--
asn1_decoder.h
468
B
-rw-r--r--
asn1_encoder.h
1006
B
-rw-r--r--
assoc_array.h
2.88
KB
-rw-r--r--
assoc_array_priv.h
5.3
KB
-rw-r--r--
async.h
4.26
KB
-rw-r--r--
async_tx.h
6.7
KB
-rw-r--r--
ata.h
32.52
KB
-rw-r--r--
ata_platform.h
749
B
-rw-r--r--
atalk.h
4.48
KB
-rw-r--r--
ath9k_platform.h
1.44
KB
-rw-r--r--
atm.h
287
B
-rw-r--r--
atm_tcp.h
511
B
-rw-r--r--
atmdev.h
9.99
KB
-rw-r--r--
atmel-isc-media.h
2.07
KB
-rw-r--r--
atmel-mci.h
1.4
KB
-rw-r--r--
atmel-ssc.h
9.74
KB
-rw-r--r--
atmel_pdc.h
1.26
KB
-rw-r--r--
atomic.h
2.58
KB
-rw-r--r--
attribute_container.h
2.74
KB
-rw-r--r--
audit.h
19.45
KB
-rw-r--r--
auto_dev-ioctl.h
296
B
-rw-r--r--
auto_fs.h
278
B
-rw-r--r--
auxiliary_bus.h
2.48
KB
-rw-r--r--
auxvec.h
304
B
-rw-r--r--
average.h
2.42
KB
-rw-r--r--
backing-dev-defs.h
8.55
KB
-rw-r--r--
backing-dev.h
11.81
KB
-rw-r--r--
backlight.h
13.13
KB
-rw-r--r--
badblocks.h
2.14
KB
-rw-r--r--
balloon_compaction.h
6.59
KB
-rw-r--r--
bcd.h
559
B
-rw-r--r--
bch.h
2.1
KB
-rw-r--r--
bcm47xx_nvram.h
1.01
KB
-rw-r--r--
bcm47xx_sprom.h
616
B
-rw-r--r--
bcm47xx_wdt.h
555
B
-rw-r--r--
bcm963xx_nvram.h
2.96
KB
-rw-r--r--
bcm963xx_tag.h
3.6
KB
-rw-r--r--
binfmts.h
4.48
KB
-rw-r--r--
bio.h
19.64
KB
-rw-r--r--
bit_spinlock.h
2.3
KB
-rw-r--r--
bitfield.h
4.75
KB
-rw-r--r--
bitmap.h
21.62
KB
-rw-r--r--
bitops.h
8.53
KB
-rw-r--r--
bitrev.h
2.53
KB
-rw-r--r--
bits.h
1.35
KB
-rw-r--r--
blk-cgroup.h
21.4
KB
-rw-r--r--
blk-crypto.h
4.02
KB
-rw-r--r--
blk-mq-pci.h
269
B
-rw-r--r--
blk-mq-rdma.h
273
B
-rw-r--r--
blk-mq-virtio.h
293
B
-rw-r--r--
blk-mq.h
19.37
KB
-rw-r--r--
blk-pm.h
708
B
-rw-r--r--
blk_types.h
15.42
KB
-rw-r--r--
blkdev.h
56.35
KB
-rw-r--r--
blkpg.h
436
B
-rw-r--r--
blktrace_api.h
3.77
KB
-rw-r--r--
blockgroup_lock.h
810
B
-rw-r--r--
bma150.h
1.26
KB
-rw-r--r--
bootconfig.h
8.51
KB
-rw-r--r--
bootmem_info.h
1.61
KB
-rw-r--r--
bottom_half.h
974
B
-rw-r--r--
bpf-cgroup.h
18.52
KB
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bpf-netns.h
1.52
KB
-rw-r--r--
bpf.h
69.46
KB
-rw-r--r--
bpf_lirc.h
698
B
-rw-r--r--
bpf_local_storage.h
5.23
KB
-rw-r--r--
bpf_lsm.h
1.42
KB
-rw-r--r--
bpf_trace.h
166
B
-rw-r--r--
bpf_types.h
5.41
KB
-rw-r--r--
bpf_verifier.h
18.45
KB
-rw-r--r--
bpfilter.h
791
B
-rw-r--r--
bpfptr.h
1.83
KB
-rw-r--r--
brcmphy.h
13.67
KB
-rw-r--r--
bsearch.h
624
B
-rw-r--r--
bsg-lib.h
1.72
KB
-rw-r--r--
bsg.h
492
B
-rw-r--r--
btf.h
7.26
KB
-rw-r--r--
btf_ids.h
5.32
KB
-rw-r--r--
btree-128.h
2.67
KB
-rw-r--r--
btree-type.h
3.9
KB
-rw-r--r--
btree.h
6.84
KB
-rw-r--r--
btrfs.h
145
B
-rw-r--r--
buffer_head.h
13.54
KB
-rw-r--r--
bug.h
2.17
KB
-rw-r--r--
build-salt.h
375
B
-rw-r--r--
build_bug.h
2.76
KB
-rw-r--r--
buildid.h
561
B
-rw-r--r--
bvec.h
6.17
KB
-rw-r--r--
c2port.h
1.35
KB
-rw-r--r--
cache.h
2.55
KB
-rw-r--r--
cacheinfo.h
3.75
KB
-rw-r--r--
capability.h
8.29
KB
-rw-r--r--
cb710.h
5.36
KB
-rw-r--r--
cc_platform.h
2.32
KB
-rw-r--r--
cciss_ioctl.h
1.03
KB
-rw-r--r--
ccp.h
18.14
KB
-rw-r--r--
cdev.h
845
B
-rw-r--r--
cdrom.h
8.98
KB
-rw-r--r--
cfag12864b.h
1.47
KB
-rw-r--r--
cfi.h
1.13
KB
-rw-r--r--
cgroup-defs.h
24.1
KB
-rw-r--r--
cgroup.h
28.19
KB
-rw-r--r--
cgroup_rdma.h
1.18
KB
-rw-r--r--
cgroup_subsys.h
1.23
KB
-rw-r--r--
circ_buf.h
1.09
KB
-rw-r--r--
cleancache.h
3.89
KB
-rw-r--r--
clk-provider.h
56.38
KB
-rw-r--r--
clk.h
29.59
KB
-rw-r--r--
clkdev.h
1.29
KB
-rw-r--r--
clockchips.h
7.27
KB
-rw-r--r--
clocksource.h
9.57
KB
-rw-r--r--
clocksource_ids.h
247
B
-rw-r--r--
cm4000_cs.h
199
B
-rw-r--r--
cma.h
1.59
KB
-rw-r--r--
cn_proc.h
1.85
KB
-rw-r--r--
cnt32_to_63.h
3.46
KB
-rw-r--r--
coda.h
2.16
KB
-rw-r--r--
compaction.h
7.15
KB
-rw-r--r--
compat.h
31.35
KB
-rw-r--r--
compiler-clang.h
2.27
KB
-rw-r--r--
compiler-gcc.h
4.44
KB
-rw-r--r--
compiler-intel.h
949
B
-rw-r--r--
compiler-version.h
517
B
-rw-r--r--
compiler.h
7.78
KB
-rw-r--r--
compiler_attributes.h
12.15
KB
-rw-r--r--
compiler_types.h
10.46
KB
-rw-r--r--
completion.h
4
KB
-rw-r--r--
component.h
4.07
KB
-rw-r--r--
configfs.h
8.48
KB
-rw-r--r--
connector.h
3.83
KB
-rw-r--r--
console.h
7.28
KB
-rw-r--r--
console_struct.h
7.08
KB
-rw-r--r--
consolemap.h
1.05
KB
-rw-r--r--
const.h
421
B
-rw-r--r--
container.h
610
B
-rw-r--r--
context_tracking.h
3.28
KB
-rw-r--r--
context_tracking_state.h
1.58
KB
-rw-r--r--
cookie.h
1.22
KB
-rw-r--r--
cordic.h
2.08
KB
-rw-r--r--
coredump.h
1.23
KB
-rw-r--r--
coresight-pmu.h
1.32
KB
-rw-r--r--
coresight-stm.h
152
B
-rw-r--r--
coresight.h
17.81
KB
-rw-r--r--
count_zeros.h
1.42
KB
-rw-r--r--
counter.h
15.13
KB
-rw-r--r--
counter_enum.h
1.43
KB
-rw-r--r--
cper.h
16.41
KB
-rw-r--r--
cpu.h
7.31
KB
-rw-r--r--
cpu_cooling.h
1.86
KB
-rw-r--r--
cpu_pm.h
2.38
KB
-rw-r--r--
cpu_rmap.h
1.68
KB
-rw-r--r--
cpufeature.h
1.71
KB
-rw-r--r--
cpufreq.h
32.57
KB
-rw-r--r--
cpuhotplug.h
16.47
KB
-rw-r--r--
cpuidle.h
10.27
KB
-rw-r--r--
cpuidle_haltpoll.h
312
B
-rw-r--r--
cpumask.h
28.61
KB
-rw-r--r--
cpuset.h
7.34
KB
-rw-r--r--
crash_core.h
3.38
KB
-rw-r--r--
crash_dump.h
4.05
KB
-rw-r--r--
crc-ccitt.h
609
B
-rw-r--r--
crc-itu-t.h
531
B
-rw-r--r--
crc-t10dif.h
453
B
-rw-r--r--
crc16.h
540
B
-rw-r--r--
crc32.h
2.83
KB
-rw-r--r--
crc32c.h
331
B
-rw-r--r--
crc32poly.h
610
B
-rw-r--r--
crc4.h
192
B
-rw-r--r--
crc64.h
280
B
-rw-r--r--
crc7.h
316
B
-rw-r--r--
crc8.h
3.66
KB
-rw-r--r--
cred.h
12.48
KB
-rw-r--r--
crypto.h
27.08
KB
-rw-r--r--
cs5535.h
6.13
KB
-rw-r--r--
ctype.h
1.87
KB
-rw-r--r--
cuda.h
613
B
-rw-r--r--
damon.h
10.35
KB
-rw-r--r--
dasd_mod.h
204
B
-rw-r--r--
davinci_emac.h
1.05
KB
-rw-r--r--
dax.h
6.56
KB
-rw-r--r--
dca.h
1.88
KB
-rw-r--r--
dcache.h
18.63
KB
-rw-r--r--
dccp.h
10.73
KB
-rw-r--r--
debug_locks.h
1.59
KB
-rw-r--r--
debugfs.h
11.22
KB
-rw-r--r--
debugobjects.h
3.99
KB
-rw-r--r--
delay.h
2.43
KB
-rw-r--r--
delayacct.h
5.45
KB
-rw-r--r--
delayed_call.h
709
B
-rw-r--r--
dev_printk.h
9.05
KB
-rw-r--r--
devcoredump.h
2.21
KB
-rw-r--r--
devfreq-event.h
5.95
KB
-rw-r--r--
devfreq.h
13.98
KB
-rw-r--r--
devfreq_cooling.h
2.7
KB
-rw-r--r--
device-mapper.h
18.92
KB
-rw-r--r--
device.h
32.89
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-rw-r--r--
device_cgroup.h
1.57
KB
-rw-r--r--
devm-helpers.h
2.68
KB
-rw-r--r--
devpts_fs.h
1.13
KB
-rw-r--r--
dfl.h
2.38
KB
-rw-r--r--
digsig.h
1.18
KB
-rw-r--r--
dim.h
9.13
KB
-rw-r--r--
dio.h
10.76
KB
-rw-r--r--
dirent.h
215
B
-rw-r--r--
dlm.h
5.86
KB
-rw-r--r--
dlm_plock.h
532
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-rw-r--r--
dm-bufio.h
4.88
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-rw-r--r--
dm-dirty-log.h
3.94
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-rw-r--r--
dm-io.h
1.93
KB
-rw-r--r--
dm-kcopyd.h
2.94
KB
-rw-r--r--
dm-region-hash.h
3.11
KB
-rw-r--r--
dm9000.h
987
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-rw-r--r--
dma-buf-map.h
8.12
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-rw-r--r--
dma-buf.h
20.47
KB
-rw-r--r--
dma-direct.h
3.59
KB
-rw-r--r--
dma-direction.h
407
B
-rw-r--r--
dma-fence-array.h
2.14
KB
-rw-r--r--
dma-fence-chain.h
3.07
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-rw-r--r--
dma-fence.h
20.25
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-rw-r--r--
dma-heap.h
1.58
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-rw-r--r--
dma-iommu.h
2.21
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-rw-r--r--
dma-map-ops.h
12.73
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-rw-r--r--
dma-mapping.h
19.81
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-rw-r--r--
dma-resv.h
9.05
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-rw-r--r--
dmaengine.h
53.53
KB
-rw-r--r--
dmapool.h
1.79
KB
-rw-r--r--
dmar.h
7.74
KB
-rw-r--r--
dmi.h
4.27
KB
-rw-r--r--
dnotify.h
1.02
KB
-rw-r--r--
dns_resolver.h
1.36
KB
-rw-r--r--
dqblk_qtree.h
2.19
KB
-rw-r--r--
dqblk_v1.h
327
B
-rw-r--r--
dqblk_v2.h
406
B
-rw-r--r--
drbd.h
10.07
KB
-rw-r--r--
drbd_genl.h
21.49
KB
-rw-r--r--
drbd_genl_api.h
1.77
KB
-rw-r--r--
drbd_limits.h
7.82
KB
-rw-r--r--
ds2782_battery.h
158
B
-rw-r--r--
dtlk.h
3.5
KB
-rw-r--r--
dtpm.h
1.64
KB
-rw-r--r--
dw_apb_timer.h
1.53
KB
-rw-r--r--
dynamic_debug.h
6.6
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elevator.h
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elf-fdpic.h
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elf-randomize.h
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elfcore-compat.h
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elfcore.h
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energy_model.h
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errseq.h
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etherdevice.h
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ethtool.h
31.72
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ethtool_netlink.h
1.98
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eventfd.h
2.1
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eventpoll.h
2.4
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evm.h
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export.h
5.24
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exportfs.h
8.25
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ext2_fs.h
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extable.h
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extcon-provider.h
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extcon.h
10.17
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f2fs_fs.h
19
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fanotify.h
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fault-inject-usercopy.h
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fault-inject.h
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fb.h
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fbcon.h
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833
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fileattr.h
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fips.h
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firewire.h
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firmware-map.h
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firmware.h
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fixp-arith.h
4.19
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flat.h
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font.h
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fortify-string.h
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freelist.h
3.8
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freezer.h
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frontswap.h
3.04
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fs.h
120.45
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fs_context.h
8.68
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fs_enet_pd.h
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fs_parser.h
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fs_stack.h
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629
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fsl-diu-fb.h
3.87
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fsl_devices.h
4.16
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fsl_hypervisor.h
2.76
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fsnotify.h
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fsnotify_backend.h
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fsverity.h
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ftrace_irq.h
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gameport.h
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genalloc.h
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generic-radix-tree.h
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genetlink.h
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genhd.h
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genl_magic_func.h
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genl_magic_struct.h
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getcpu.h
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gfp.h
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glob.h
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gnss.h
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goldfish.h
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gpio-pxa.h
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gpio.h
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gpio_keys.h
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greybus.h
4.14
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hardirq.h
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hash.h
3
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hashtable.h
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hdlc.h
3.19
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hdlcdrv.h
6.32
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hdmi.h
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hid-debug.h
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hid-roccat.h
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hidden.h
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hiddev.h
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highmem.h
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highuid.h
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hil_mlc.h
5.13
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hippidevice.h
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hmm.h
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host1x.h
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hp_sdc.h
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hpet.h
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hrtimer_defs.h
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htcpld.h
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huge_mm.h
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hugetlb.h
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hugetlb_cgroup.h
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hugetlb_inline.h
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hw_breakpoint.h
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hw_random.h
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hwmon-sysfs.h
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hwmon-vid.h
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hwmon.h
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hwspinlock.h
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hyperv.h
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hypervisor.h
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i2c-algo-bit.h
1.4
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icmp.h
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icmpv6.h
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idle_inject.h
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idr.h
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ieee80211.h
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ieee802154.h
11.12
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if_arp.h
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if_bridge.h
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if_eql.h
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if_ether.h
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if_fddi.h
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if_hsr.h
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if_ltalk.h
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if_tunnel.h
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if_vlan.h
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igmp.h
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ihex.h
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ima.h
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imx-media.h
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in6.h
1.63
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indirect_call_wrapper.h
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inet.h
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inet_diag.h
2.74
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inetdevice.h
8.87
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init.h
11.39
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init_ohci1394_dma.h
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init_syscalls.h
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init_task.h
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initrd.h
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inotify.h
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input.h
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instrumentation.h
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instrumented.h
3.6
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integrity.h
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intel-iommu.h
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intel-ish-client-if.h
3.97
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intel-svm.h
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intel_rapl.h
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intel_th.h
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interconnect-provider.h
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interconnect.h
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interrupt.h
23.81
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interval_tree.h
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interval_tree_generic.h
6.7
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io-64-nonatomic-lo-hi.h
2.41
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io-mapping.h
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io-pgtable.h
8.39
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io.h
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io_uring.h
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226
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ioam6_genl.h
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ioam6_iptunnel.h
285
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iocontext.h
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iomap.h
11.67
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iommu-helper.h
1.12
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iommu.h
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iopoll.h
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ioport.h
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ioprio.h
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iova.h
6.15
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ip.h
1
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ipack.h
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ipc.h
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ipc_namespace.h
4.98
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ipmi.h
10.88
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ipmi_smi.h
7.98
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ipv6.h
8.67
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ipv6_route.h
372
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irq.h
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irq_poll.h
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irq_sim.h
789
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irq_work.h
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irqbypass.h
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irqchip.h
2.33
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irqdesc.h
7.75
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irqdomain.h
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irqflags.h
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irqhandler.h
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irqnr.h
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irqreturn.h
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isapnp.h
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iscsi_boot_sysfs.h
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iscsi_ibft.h
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iversion.h
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jbd2.h
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jhash.h
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jiffies.h
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journal-head.h
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joystick.h
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jump_label.h
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jump_label_ratelimit.h
2.77
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jz4740-adc.h
1023
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jz4780-nemc.h
976
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kallsyms.h
4.5
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kasan-checks.h
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kasan-tags.h
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kasan.h
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kbd_diacr.h
198
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kbd_kern.h
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kbuild.h
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kconfig.h
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kcore.h
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kcov.h
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1.88
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kdb.h
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kdebug.h
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kdev_t.h
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kern_levels.h
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kernel-page-flags.h
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kernel.h
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kernel_read_file.h
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kernel_stat.h
2.97
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kernelcapi.h
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kernfs.h
18.11
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kexec.h
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key-type.h
6.53
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key.h
15.75
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keyboard.h
665
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keyctl.h
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keyslot-manager.h
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kfence.h
8
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kfifo.h
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kgdb.h
12.05
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khugepaged.h
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klist.h
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kmemleak.h
3.27
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kmsg_dump.h
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kobj_map.h
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kobject.h
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kobject_ns.h
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kprobes.h
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472
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kthread.h
6.9
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ktime.h
5.38
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kvm_dirty_ring.h
2.73
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kvm_host.h
58.09
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kvm_irqfd.h
2
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kvm_para.h
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kvm_types.h
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l2tp.h
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lantiq.h
365
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lapb.h
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latencytop.h
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lcd.h
3.78
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lcm.h
275
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led-class-flash.h
6.74
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led-class-multicolor.h
3.26
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led-lm3530.h
3.7
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leds-bd2802.h
476
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leds-lp3944.h
950
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leds-lp3952.h
2.35
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leds-pca9532.h
866
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leds-regulator.h
1.14
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leds-ti-lmu-common.h
1.12
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leds.h
18.26
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libata.h
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qcom_scm.h
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radix-tree.h
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raid_class.h
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ramfs.h
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random.h
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rcu_segcblist.h
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rcu_sync.h
1.46
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rculist.h
28.56
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rculist_bl.h
3.29
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rculist_nulls.h
6.57
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rcupdate.h
36.33
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rcupdate_trace.h
3.08
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rcupdate_wait.h
1.73
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rcutiny.h
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rcutree.h
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rcuwait.h
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reboot-mode.h
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reboot.h
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reciprocal_div.h
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refcount.h
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regmap.h
62.95
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regset.h
11.35
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relay.h
8.47
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remoteproc.h
24.77
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resctrl.h
6.5
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reset-controller.h
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reset.h
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resource_ext.h
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restart_block.h
1.11
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rfkill.h
10.52
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3.45
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rhashtable.h
37.59
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ring_buffer.h
7.43
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rio.h
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rio_drv.h
14.32
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rio_ids.h
1.08
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rio_regs.h
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rmap.h
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rmi.h
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rodata_test.h
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root_dev.h
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rpmsg.h
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rslib.h
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rtmutex.h
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rtnetlink.h
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rtsx_common.h
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rtsx_pci.h
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rtsx_usb.h
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rwbase_rt.h
876
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rwlock.h
4.55
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rwlock_api_smp.h
7.65
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rwlock_rt.h
2.98
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rwlock_types.h
1.77
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rwsem.h
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s3c_adc_battery.h
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scc.h
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sched.h
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sched_clock.h
1.44
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scmi_protocol.h
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scpi_protocol.h
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screen_info.h
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scs.h
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scx200.h
1.82
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scx200_gpio.h
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sdb.h
4.17
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seccomp.h
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secretmem.h
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securebits.h
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security.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_local.h
100
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selection.h
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sem.h
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semaphore.h
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seq_buf.h
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seq_file.h
8.75
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seq_file_net.h
730
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seqlock.h
38.18
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seqno-fence.h
3.57
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serdev.h
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serial.h
630
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serial_8250.h
6.57
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serial_bcm63xx.h
4.73
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serial_core.h
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serial_max3100.h
1.19
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serial_s3c.h
9.42
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serial_sci.h
1.6
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serio.h
4.28
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set_memory.h
1.66
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sfp.h
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sh_clk.h
5.96
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sh_dma.h
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sh_eth.h
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shdma-base.h
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shm.h
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shmem_fs.h
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shrinker.h
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signal.h
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signal_types.h
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signalfd.h
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siox.h
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siphash.h
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sizes.h
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skb_array.h
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skbuff.h
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skmsg.h
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slab_def.h
3.02
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slimbus.h
6.93
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slub_def.h
6.22
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sm501-regs.h
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sm501.h
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smc911x.h
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smc91x.h
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smp.h
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smp_types.h
1.35
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smpboot.h
1.68
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smscphy.h
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sock_diag.h
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socket.h
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sockptr.h
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sonet.h
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sony-laptop.h
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sonypi.h
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sort.h
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sound.h
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soundcard.h
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spinlock.h
14.07
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spinlock_api_smp.h
5.47
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spinlock_api_up.h
3.31
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spinlock_rt.h
4.11
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spinlock_types.h
1.78
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spinlock_types_raw.h
1.69
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spinlock_types_up.h
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spinlock_up.h
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splice.h
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spmi.h
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sram.h
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srcu.h
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srcutiny.h
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srcutree.h
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ssbi.h
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stackdepot.h
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stackprotector.h
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statfs.h
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static_call_types.h
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static_key.h
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stddef.h
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stmmac.h
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stmp3xxx_rtc_wdt.h
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stmp_device.h
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stop_machine.h
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string.h
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string_helpers.h
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stringhash.h
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stringify.h
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sungem_phy.h
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sunserialcore.h
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sunxi-rsb.h
2.89
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superhyway.h
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surface_acpi_notify.h
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suspend.h
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svga.h
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swapops.h
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swiotlb.h
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switchtec.h
10.9
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sxgbe_platform.h
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sync_core.h
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sync_file.h
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synclink.h
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sys.h
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sys_soc.h
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syscalls.h
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syscore_ops.h
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sysctl.h
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sysfb.h
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sysfs.h
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sysrq.h
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sysv_fs.h
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t10-pi.h
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task_io_accounting_ops.h
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task_work.h
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taskstats_kern.h
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tboot.h
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tc.h
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tcp.h
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tee_drv.h
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textsearch.h
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textsearch_fsm.h
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tfrc.h
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thermal.h
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thread_info.h
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threads.h
1.28
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thunderbolt.h
20.78
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ti-emif-sram.h
5.15
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ti_wilink_st.h
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tick.h
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tifm.h
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timb_dma.h
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timb_gpio.h
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time.h
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time32.h
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time_namespace.h
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timecounter.h
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timekeeper_internal.h
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timekeeping.h
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timer.h
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timerfd.h
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timeriomem-rng.h
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timerqueue.h
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timex.h
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tnum.h
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topology.h
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torture.h
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toshiba.h
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tpm.h
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tpm_command.h
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tpm_eventlog.h
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trace.h
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trace_clock.h
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trace_seq.h
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tracefs.h
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tracehook.h
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tracepoint-defs.h
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tracepoint.h
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transport_class.h
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ts-nbus.h
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tsacct_kern.h
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tty.h
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tty_buffer.h
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tty_port.h
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typecheck.h
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types.h
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u64_stats_sync.h
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uaccess.h
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ucb1400.h
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ucs2_string.h
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udp.h
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uidgid.h
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uio_driver.h
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unicode.h
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units.h
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uprobes.h
6
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usb.h
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usb_usual.h
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usbdevice_fs.h
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user-return-notifier.h
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user.h
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user_namespace.h
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userfaultfd_k.h
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util_macros.h
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utsname.h
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uuid.h
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vbox_utils.h
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vdpa.h
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verification.h
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vermagic.h
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vfio.h
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vfio_pci_core.h
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vfs.h
116
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vga_switcheroo.h
8.62
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vgaarb.h
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vhost_iotlb.h
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via-core.h
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via.h
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6.7
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virtio_byteorder.h
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virtio_caif.h
513
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virtio_config.h
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virtio_console.h
1.93
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virtio_dma_buf.h
1.12
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virtio_net.h
5.38
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virtio_pci_modern.h
3.25
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virtio_ring.h
2.95
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virtio_vsock.h
4.79
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visorbus.h
12.23
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vlynq.h
3.22
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vm_event_item.h
3.46
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vmacache.h
722
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vmalloc.h
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vme.h
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vmpressure.h
1.68
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vmstat.h
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vmw_vmci_api.h
2.88
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vmw_vmci_defs.h
27.5
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vringh.h
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vt.h
611
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vt_buffer.h
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vt_kern.h
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vtime.h
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w1-gpio.h
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w1.h
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wait.h
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wait_bit.h
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watch_queue.h
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watchdog.h
8.21
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win_minmax.h
832
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wireless.h
1.4
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wkup_m3_ipc.h
1.75
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wl12xx.h
810
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wm97xx.h
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wmi.h
1.56
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Code Editor : perf_event.h
/* * Performance events: * * Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de> * Copyright (C) 2008-2011, Red Hat, Inc., Ingo Molnar * Copyright (C) 2008-2011, Red Hat, Inc., Peter Zijlstra * * Data type definitions, declarations, prototypes. * * Started by: Thomas Gleixner and Ingo Molnar * * For licencing details see kernel-base/COPYING */ #ifndef _LINUX_PERF_EVENT_H #define _LINUX_PERF_EVENT_H #include <uapi/linux/perf_event.h> #include <uapi/linux/bpf_perf_event.h> /* * Kernel-internal data types and definitions: */ #ifdef CONFIG_PERF_EVENTS # include <asm/perf_event.h> # include <asm/local64.h> #endif struct perf_guest_info_callbacks { int (*is_in_guest)(void); int (*is_user_mode)(void); unsigned long (*get_guest_ip)(void); void (*handle_intel_pt_intr)(void); }; #ifdef CONFIG_HAVE_HW_BREAKPOINT #include <asm/hw_breakpoint.h> #endif #include <linux/list.h> #include <linux/mutex.h> #include <linux/rculist.h> #include <linux/rcupdate.h> #include <linux/spinlock.h> #include <linux/hrtimer.h> #include <linux/fs.h> #include <linux/pid_namespace.h> #include <linux/workqueue.h> #include <linux/ftrace.h> #include <linux/cpu.h> #include <linux/irq_work.h> #include <linux/static_key.h> #include <linux/jump_label_ratelimit.h> #include <linux/atomic.h> #include <linux/sysfs.h> #include <linux/perf_regs.h> #include <linux/cgroup.h> #include <linux/refcount.h> #include <linux/security.h> #include <asm/local.h> struct perf_callchain_entry { __u64 nr; __u64 ip[]; /* /proc/sys/kernel/perf_event_max_stack */ }; struct perf_callchain_entry_ctx { struct perf_callchain_entry *entry; u32 max_stack; u32 nr; short contexts; bool contexts_maxed; }; typedef unsigned long (*perf_copy_f)(void *dst, const void *src, unsigned long off, unsigned long len); struct perf_raw_frag { union { struct perf_raw_frag *next; unsigned long pad; }; perf_copy_f copy; void *data; u32 size; } __packed; struct perf_raw_record { struct perf_raw_frag frag; u32 size; }; /* * branch stack layout: * nr: number of taken branches stored in entries[] * hw_idx: The low level index of raw branch records * for the most recent branch. * -1ULL means invalid/unknown. * * Note that nr can vary from sample to sample * branches (to, from) are stored from most recent * to least recent, i.e., entries[0] contains the most * recent branch. * The entries[] is an abstraction of raw branch records, * which may not be stored in age order in HW, e.g. Intel LBR. * The hw_idx is to expose the low level index of raw * branch record for the most recent branch aka entries[0]. * The hw_idx index is between -1 (unknown) and max depth, * which can be retrieved in /sys/devices/cpu/caps/branches. * For the architectures whose raw branch records are * already stored in age order, the hw_idx should be 0. */ struct perf_branch_stack { __u64 nr; __u64 hw_idx; struct perf_branch_entry entries[]; }; struct task_struct; /* * extra PMU register associated with an event */ struct hw_perf_event_extra { u64 config; /* register value */ unsigned int reg; /* register address or index */ int alloc; /* extra register already allocated */ int idx; /* index in shared_regs->regs[] */ }; /** * struct hw_perf_event - performance event hardware details: */ struct hw_perf_event { #ifdef CONFIG_PERF_EVENTS union { struct { /* hardware */ u64 config; u64 last_tag; unsigned long config_base; unsigned long event_base; int event_base_rdpmc; int idx; int last_cpu; int flags; struct hw_perf_event_extra extra_reg; struct hw_perf_event_extra branch_reg; }; struct { /* software */ struct hrtimer hrtimer; }; struct { /* tracepoint */ /* for tp_event->class */ struct list_head tp_list; }; struct { /* amd_power */ u64 pwr_acc; u64 ptsc; }; #ifdef CONFIG_HAVE_HW_BREAKPOINT struct { /* breakpoint */ /* * Crufty hack to avoid the chicken and egg * problem hw_breakpoint has with context * creation and event initalization. */ struct arch_hw_breakpoint info; struct list_head bp_list; }; #endif struct { /* amd_iommu */ u8 iommu_bank; u8 iommu_cntr; u16 padding; u64 conf; u64 conf1; }; }; /* * If the event is a per task event, this will point to the task in * question. See the comment in perf_event_alloc(). */ struct task_struct *target; /* * PMU would store hardware filter configuration * here. */ void *addr_filters; /* Last sync'ed generation of filters */ unsigned long addr_filters_gen; /* * hw_perf_event::state flags; used to track the PERF_EF_* state. */ #define PERF_HES_STOPPED 0x01 /* the counter is stopped */ #define PERF_HES_UPTODATE 0x02 /* event->count up-to-date */ #define PERF_HES_ARCH 0x04 int state; /* * The last observed hardware counter value, updated with a * local64_cmpxchg() such that pmu::read() can be called nested. */ local64_t prev_count; /* * The period to start the next sample with. */ u64 sample_period; union { struct { /* Sampling */ /* * The period we started this sample with. */ u64 last_period; /* * However much is left of the current period; * note that this is a full 64bit value and * allows for generation of periods longer * than hardware might allow. */ local64_t period_left; }; struct { /* Topdown events counting for context switch */ u64 saved_metric; u64 saved_slots; }; }; /* * State for throttling the event, see __perf_event_overflow() and * perf_adjust_freq_unthr_context(). */ u64 interrupts_seq; u64 interrupts; /* * State for freq target events, see __perf_event_overflow() and * perf_adjust_freq_unthr_context(). */ u64 freq_time_stamp; u64 freq_count_stamp; #endif }; struct perf_event; /* * Common implementation detail of pmu::{start,commit,cancel}_txn */ #define PERF_PMU_TXN_ADD 0x1 /* txn to add/schedule event on PMU */ #define PERF_PMU_TXN_READ 0x2 /* txn to read event group from PMU */ /** * pmu::capabilities flags */ #define PERF_PMU_CAP_NO_INTERRUPT 0x0001 #define PERF_PMU_CAP_NO_NMI 0x0002 #define PERF_PMU_CAP_AUX_NO_SG 0x0004 #define PERF_PMU_CAP_EXTENDED_REGS 0x0008 #define PERF_PMU_CAP_EXCLUSIVE 0x0010 #define PERF_PMU_CAP_ITRACE 0x0020 #define PERF_PMU_CAP_HETEROGENEOUS_CPUS 0x0040 #define PERF_PMU_CAP_NO_EXCLUDE 0x0080 #define PERF_PMU_CAP_AUX_OUTPUT 0x0100 #define PERF_PMU_CAP_EXTENDED_HW_TYPE 0x0200 struct perf_output_handle; /** * struct pmu - generic performance monitoring unit */ struct pmu { struct list_head entry; struct module *module; struct device *dev; const struct attribute_group **attr_groups; const struct attribute_group **attr_update; const char *name; int type; /* * various common per-pmu feature flags */ int capabilities; int __percpu *pmu_disable_count; struct perf_cpu_context __percpu *pmu_cpu_context; atomic_t exclusive_cnt; /* < 0: cpu; > 0: tsk */ int task_ctx_nr; int hrtimer_interval_ms; /* number of address filters this PMU can do */ unsigned int nr_addr_filters; /* * Fully disable/enable this PMU, can be used to protect from the PMI * as well as for lazy/batch writing of the MSRs. */ void (*pmu_enable) (struct pmu *pmu); /* optional */ void (*pmu_disable) (struct pmu *pmu); /* optional */ /* * Try and initialize the event for this PMU. * * Returns: * -ENOENT -- @event is not for this PMU * * -ENODEV -- @event is for this PMU but PMU not present * -EBUSY -- @event is for this PMU but PMU temporarily unavailable * -EINVAL -- @event is for this PMU but @event is not valid * -EOPNOTSUPP -- @event is for this PMU, @event is valid, but not supported * -EACCES -- @event is for this PMU, @event is valid, but no privileges * * 0 -- @event is for this PMU and valid * * Other error return values are allowed. */ int (*event_init) (struct perf_event *event); /* * Notification that the event was mapped or unmapped. Called * in the context of the mapping task. */ void (*event_mapped) (struct perf_event *event, struct mm_struct *mm); /* optional */ void (*event_unmapped) (struct perf_event *event, struct mm_struct *mm); /* optional */ /* * Flags for ->add()/->del()/ ->start()/->stop(). There are * matching hw_perf_event::state flags. */ #define PERF_EF_START 0x01 /* start the counter when adding */ #define PERF_EF_RELOAD 0x02 /* reload the counter when starting */ #define PERF_EF_UPDATE 0x04 /* update the counter when stopping */ /* * Adds/Removes a counter to/from the PMU, can be done inside a * transaction, see the ->*_txn() methods. * * The add/del callbacks will reserve all hardware resources required * to service the event, this includes any counter constraint * scheduling etc. * * Called with IRQs disabled and the PMU disabled on the CPU the event * is on. * * ->add() called without PERF_EF_START should result in the same state * as ->add() followed by ->stop(). * * ->del() must always PERF_EF_UPDATE stop an event. If it calls * ->stop() that must deal with already being stopped without * PERF_EF_UPDATE. */ int (*add) (struct perf_event *event, int flags); void (*del) (struct perf_event *event, int flags); /* * Starts/Stops a counter present on the PMU. * * The PMI handler should stop the counter when perf_event_overflow() * returns !0. ->start() will be used to continue. * * Also used to change the sample period. * * Called with IRQs disabled and the PMU disabled on the CPU the event * is on -- will be called from NMI context with the PMU generates * NMIs. * * ->stop() with PERF_EF_UPDATE will read the counter and update * period/count values like ->read() would. * * ->start() with PERF_EF_RELOAD will reprogram the counter * value, must be preceded by a ->stop() with PERF_EF_UPDATE. */ void (*start) (struct perf_event *event, int flags); void (*stop) (struct perf_event *event, int flags); /* * Updates the counter value of the event. * * For sampling capable PMUs this will also update the software period * hw_perf_event::period_left field. */ void (*read) (struct perf_event *event); /* * Group events scheduling is treated as a transaction, add * group events as a whole and perform one schedulability test. * If the test fails, roll back the whole group * * Start the transaction, after this ->add() doesn't need to * do schedulability tests. * * Optional. */ void (*start_txn) (struct pmu *pmu, unsigned int txn_flags); /* * If ->start_txn() disabled the ->add() schedulability test * then ->commit_txn() is required to perform one. On success * the transaction is closed. On error the transaction is kept * open until ->cancel_txn() is called. * * Optional. */ int (*commit_txn) (struct pmu *pmu); /* * Will cancel the transaction, assumes ->del() is called * for each successful ->add() during the transaction. * * Optional. */ void (*cancel_txn) (struct pmu *pmu); /* * Will return the value for perf_event_mmap_page::index for this event, * if no implementation is provided it will default to: event->hw.idx + 1. */ int (*event_idx) (struct perf_event *event); /*optional */ /* * context-switches callback */ void (*sched_task) (struct perf_event_context *ctx, bool sched_in); /* * Kmem cache of PMU specific data */ struct kmem_cache *task_ctx_cache; /* * PMU specific parts of task perf event context (i.e. ctx->task_ctx_data) * can be synchronized using this function. See Intel LBR callstack support * implementation and Perf core context switch handling callbacks for usage * examples. */ void (*swap_task_ctx) (struct perf_event_context *prev, struct perf_event_context *next); /* optional */ /* * Set up pmu-private data structures for an AUX area */ void *(*setup_aux) (struct perf_event *event, void **pages, int nr_pages, bool overwrite); /* optional */ /* * Free pmu-private AUX data structures */ void (*free_aux) (void *aux); /* optional */ /* * Take a snapshot of the AUX buffer without touching the event * state, so that preempting ->start()/->stop() callbacks does * not interfere with their logic. Called in PMI context. * * Returns the size of AUX data copied to the output handle. * * Optional. */ long (*snapshot_aux) (struct perf_event *event, struct perf_output_handle *handle, unsigned long size); /* * Validate address range filters: make sure the HW supports the * requested configuration and number of filters; return 0 if the * supplied filters are valid, -errno otherwise. * * Runs in the context of the ioctl()ing process and is not serialized * with the rest of the PMU callbacks. */ int (*addr_filters_validate) (struct list_head *filters); /* optional */ /* * Synchronize address range filter configuration: * translate hw-agnostic filters into hardware configuration in * event::hw::addr_filters. * * Runs as a part of filter sync sequence that is done in ->start() * callback by calling perf_event_addr_filters_sync(). * * May (and should) traverse event::addr_filters::list, for which its * caller provides necessary serialization. */ void (*addr_filters_sync) (struct perf_event *event); /* optional */ /* * Check if event can be used for aux_output purposes for * events of this PMU. * * Runs from perf_event_open(). Should return 0 for "no match" * or non-zero for "match". */ int (*aux_output_match) (struct perf_event *event); /* optional */ /* * Filter events for PMU-specific reasons. */ int (*filter_match) (struct perf_event *event); /* optional */ /* * Check period value for PERF_EVENT_IOC_PERIOD ioctl. */ int (*check_period) (struct perf_event *event, u64 value); /* optional */ }; enum perf_addr_filter_action_t { PERF_ADDR_FILTER_ACTION_STOP = 0, PERF_ADDR_FILTER_ACTION_START, PERF_ADDR_FILTER_ACTION_FILTER, }; /** * struct perf_addr_filter - address range filter definition * @entry: event's filter list linkage * @path: object file's path for file-based filters * @offset: filter range offset * @size: filter range size (size==0 means single address trigger) * @action: filter/start/stop * * This is a hardware-agnostic filter configuration as specified by the user. */ struct perf_addr_filter { struct list_head entry; struct path path; unsigned long offset; unsigned long size; enum perf_addr_filter_action_t action; }; /** * struct perf_addr_filters_head - container for address range filters * @list: list of filters for this event * @lock: spinlock that serializes accesses to the @list and event's * (and its children's) filter generations. * @nr_file_filters: number of file-based filters * * A child event will use parent's @list (and therefore @lock), so they are * bundled together; see perf_event_addr_filters(). */ struct perf_addr_filters_head { struct list_head list; raw_spinlock_t lock; unsigned int nr_file_filters; }; struct perf_addr_filter_range { unsigned long start; unsigned long size; }; /** * enum perf_event_state - the states of an event: */ enum perf_event_state { PERF_EVENT_STATE_DEAD = -4, PERF_EVENT_STATE_EXIT = -3, PERF_EVENT_STATE_ERROR = -2, PERF_EVENT_STATE_OFF = -1, PERF_EVENT_STATE_INACTIVE = 0, PERF_EVENT_STATE_ACTIVE = 1, }; struct file; struct perf_sample_data; typedef void (*perf_overflow_handler_t)(struct perf_event *, struct perf_sample_data *, struct pt_regs *regs); /* * Event capabilities. For event_caps and groups caps. * * PERF_EV_CAP_SOFTWARE: Is a software event. * PERF_EV_CAP_READ_ACTIVE_PKG: A CPU event (or cgroup event) that can be read * from any CPU in the package where it is active. * PERF_EV_CAP_SIBLING: An event with this flag must be a group sibling and * cannot be a group leader. If an event with this flag is detached from the * group it is scheduled out and moved into an unrecoverable ERROR state. */ #define PERF_EV_CAP_SOFTWARE BIT(0) #define PERF_EV_CAP_READ_ACTIVE_PKG BIT(1) #define PERF_EV_CAP_SIBLING BIT(2) #define SWEVENT_HLIST_BITS 8 #define SWEVENT_HLIST_SIZE (1 << SWEVENT_HLIST_BITS) struct swevent_hlist { struct hlist_head heads[SWEVENT_HLIST_SIZE]; struct rcu_head rcu_head; }; #define PERF_ATTACH_CONTEXT 0x01 #define PERF_ATTACH_GROUP 0x02 #define PERF_ATTACH_TASK 0x04 #define PERF_ATTACH_TASK_DATA 0x08 #define PERF_ATTACH_ITRACE 0x10 #define PERF_ATTACH_SCHED_CB 0x20 #define PERF_ATTACH_CHILD 0x40 struct perf_cgroup; struct perf_buffer; struct pmu_event_list { raw_spinlock_t lock; struct list_head list; }; #define for_each_sibling_event(sibling, event) \ if ((event)->group_leader == (event)) \ list_for_each_entry((sibling), &(event)->sibling_list, sibling_list) /** * struct perf_event - performance event kernel representation: */ struct perf_event { #ifdef CONFIG_PERF_EVENTS /* * entry onto perf_event_context::event_list; * modifications require ctx->lock * RCU safe iterations. */ struct list_head event_entry; /* * Locked for modification by both ctx->mutex and ctx->lock; holding * either sufficies for read. */ struct list_head sibling_list; struct list_head active_list; /* * Node on the pinned or flexible tree located at the event context; */ struct rb_node group_node; u64 group_index; /* * We need storage to track the entries in perf_pmu_migrate_context; we * cannot use the event_entry because of RCU and we want to keep the * group in tact which avoids us using the other two entries. */ struct list_head migrate_entry; struct hlist_node hlist_entry; struct list_head active_entry; int nr_siblings; /* Not serialized. Only written during event initialization. */ int event_caps; /* The cumulative AND of all event_caps for events in this group. */ int group_caps; struct perf_event *group_leader; struct pmu *pmu; void *pmu_private; enum perf_event_state state; unsigned int attach_state; local64_t count; atomic64_t child_count; /* * These are the total time in nanoseconds that the event * has been enabled (i.e. eligible to run, and the task has * been scheduled in, if this is a per-task event) * and running (scheduled onto the CPU), respectively. */ u64 total_time_enabled; u64 total_time_running; u64 tstamp; struct perf_event_attr attr; u16 header_size; u16 id_header_size; u16 read_size; struct hw_perf_event hw; struct perf_event_context *ctx; atomic_long_t refcount; /* * These accumulate total time (in nanoseconds) that children * events have been enabled and running, respectively. */ atomic64_t child_total_time_enabled; atomic64_t child_total_time_running; /* * Protect attach/detach and child_list: */ struct mutex child_mutex; struct list_head child_list; struct perf_event *parent; int oncpu; int cpu; struct list_head owner_entry; struct task_struct *owner; /* mmap bits */ struct mutex mmap_mutex; atomic_t mmap_count; struct perf_buffer *rb; struct list_head rb_entry; unsigned long rcu_batches; int rcu_pending; /* poll related */ wait_queue_head_t waitq; struct fasync_struct *fasync; /* delayed work for NMIs and such */ int pending_wakeup; int pending_kill; int pending_disable; unsigned long pending_addr; /* SIGTRAP */ struct irq_work pending; atomic_t event_limit; /* address range filters */ struct perf_addr_filters_head addr_filters; /* vma address array for file-based filders */ struct perf_addr_filter_range *addr_filter_ranges; unsigned long addr_filters_gen; /* for aux_output events */ struct perf_event *aux_event; void (*destroy)(struct perf_event *); struct rcu_head rcu_head; struct pid_namespace *ns; u64 id; u64 (*clock)(void); perf_overflow_handler_t overflow_handler; void *overflow_handler_context; #ifdef CONFIG_BPF_SYSCALL perf_overflow_handler_t orig_overflow_handler; struct bpf_prog *prog; u64 bpf_cookie; #endif #ifdef CONFIG_EVENT_TRACING struct trace_event_call *tp_event; struct event_filter *filter; #ifdef CONFIG_FUNCTION_TRACER struct ftrace_ops ftrace_ops; #endif #endif #ifdef CONFIG_CGROUP_PERF struct perf_cgroup *cgrp; /* cgroup event is attach to */ #endif #ifdef CONFIG_SECURITY void *security; #endif struct list_head sb_list; #endif /* CONFIG_PERF_EVENTS */ }; struct perf_event_groups { struct rb_root tree; u64 index; }; /** * struct perf_event_context - event context structure * * Used as a container for task events and CPU events as well: */ struct perf_event_context { struct pmu *pmu; /* * Protect the states of the events in the list, * nr_active, and the list: */ raw_spinlock_t lock; /* * Protect the list of events. Locking either mutex or lock * is sufficient to ensure the list doesn't change; to change * the list you need to lock both the mutex and the spinlock. */ struct mutex mutex; struct list_head active_ctx_list; struct perf_event_groups pinned_groups; struct perf_event_groups flexible_groups; struct list_head event_list; struct list_head pinned_active; struct list_head flexible_active; int nr_events; int nr_active; int is_active; int nr_stat; int nr_freq; int rotate_disable; /* * Set when nr_events != nr_active, except tolerant to events not * necessary to be active due to scheduling constraints, such as cgroups. */ int rotate_necessary; refcount_t refcount; struct task_struct *task; /* * Context clock, runs when context enabled. */ u64 time; u64 timestamp; u64 timeoffset; /* * These fields let us detect when two contexts have both * been cloned (inherited) from a common ancestor. */ struct perf_event_context *parent_ctx; u64 parent_gen; u64 generation; int pin_count; #ifdef CONFIG_CGROUP_PERF int nr_cgroups; /* cgroup evts */ #endif void *task_ctx_data; /* pmu specific data */ struct rcu_head rcu_head; }; /* * Number of contexts where an event can trigger: * task, softirq, hardirq, nmi. */ #define PERF_NR_CONTEXTS 4 /** * struct perf_event_cpu_context - per cpu event context structure */ struct perf_cpu_context { struct perf_event_context ctx; struct perf_event_context *task_ctx; int active_oncpu; int exclusive; raw_spinlock_t hrtimer_lock; struct hrtimer hrtimer; ktime_t hrtimer_interval; unsigned int hrtimer_active; #ifdef CONFIG_CGROUP_PERF struct perf_cgroup *cgrp; struct list_head cgrp_cpuctx_entry; #endif struct list_head sched_cb_entry; int sched_cb_usage; int online; /* * Per-CPU storage for iterators used in visit_groups_merge. The default * storage is of size 2 to hold the CPU and any CPU event iterators. */ int heap_size; struct perf_event **heap; struct perf_event *heap_default[2]; }; struct perf_output_handle { struct perf_event *event; struct perf_buffer *rb; unsigned long wakeup; unsigned long size; u64 aux_flags; union { void *addr; unsigned long head; }; int page; }; struct bpf_perf_event_data_kern { bpf_user_pt_regs_t *regs; struct perf_sample_data *data; struct perf_event *event; }; #ifdef CONFIG_CGROUP_PERF /* * perf_cgroup_info keeps track of time_enabled for a cgroup. * This is a per-cpu dynamically allocated data structure. */ struct perf_cgroup_info { u64 time; u64 timestamp; u64 timeoffset; int active; }; struct perf_cgroup { struct cgroup_subsys_state css; struct perf_cgroup_info __percpu *info; }; /* * Must ensure cgroup is pinned (css_get) before calling * this function. In other words, we cannot call this function * if there is no cgroup event for the current CPU context. */ static inline struct perf_cgroup * perf_cgroup_from_task(struct task_struct *task, struct perf_event_context *ctx) { return container_of(task_css_check(task, perf_event_cgrp_id, ctx ? lockdep_is_held(&ctx->lock) : true), struct perf_cgroup, css); } #endif /* CONFIG_CGROUP_PERF */ #ifdef CONFIG_PERF_EVENTS extern void *perf_aux_output_begin(struct perf_output_handle *handle, struct perf_event *event); extern void perf_aux_output_end(struct perf_output_handle *handle, unsigned long size); extern int perf_aux_output_skip(struct perf_output_handle *handle, unsigned long size); extern void *perf_get_aux(struct perf_output_handle *handle); extern void perf_aux_output_flag(struct perf_output_handle *handle, u64 flags); extern void perf_event_itrace_started(struct perf_event *event); extern int perf_pmu_register(struct pmu *pmu, const char *name, int type); extern void perf_pmu_unregister(struct pmu *pmu); extern void __perf_event_task_sched_in(struct task_struct *prev, struct task_struct *task); extern void __perf_event_task_sched_out(struct task_struct *prev, struct task_struct *next); extern int perf_event_init_task(struct task_struct *child, u64 clone_flags); extern void perf_event_exit_task(struct task_struct *child); extern void perf_event_free_task(struct task_struct *task); extern void perf_event_delayed_put(struct task_struct *task); extern struct file *perf_event_get(unsigned int fd); extern const struct perf_event *perf_get_event(struct file *file); extern const struct perf_event_attr *perf_event_attrs(struct perf_event *event); extern void perf_event_print_debug(void); extern void perf_pmu_disable(struct pmu *pmu); extern void perf_pmu_enable(struct pmu *pmu); extern void perf_sched_cb_dec(struct pmu *pmu); extern void perf_sched_cb_inc(struct pmu *pmu); extern int perf_event_task_disable(void); extern int perf_event_task_enable(void); extern void perf_pmu_resched(struct pmu *pmu); extern int perf_event_refresh(struct perf_event *event, int refresh); extern void perf_event_update_userpage(struct perf_event *event); extern int perf_event_release_kernel(struct perf_event *event); extern struct perf_event * perf_event_create_kernel_counter(struct perf_event_attr *attr, int cpu, struct task_struct *task, perf_overflow_handler_t callback, void *context); extern void perf_pmu_migrate_context(struct pmu *pmu, int src_cpu, int dst_cpu); int perf_event_read_local(struct perf_event *event, u64 *value, u64 *enabled, u64 *running); extern u64 perf_event_read_value(struct perf_event *event, u64 *enabled, u64 *running); struct perf_sample_data { /* * Fields set by perf_sample_data_init(), group so as to * minimize the cachelines touched. */ u64 addr; struct perf_raw_record *raw; struct perf_branch_stack *br_stack; u64 period; union perf_sample_weight weight; u64 txn; union perf_mem_data_src data_src; /* * The other fields, optionally {set,used} by * perf_{prepare,output}_sample(). */ u64 type; u64 ip; struct { u32 pid; u32 tid; } tid_entry; u64 time; u64 id; u64 stream_id; struct { u32 cpu; u32 reserved; } cpu_entry; struct perf_callchain_entry *callchain; u64 aux_size; struct perf_regs regs_user; struct perf_regs regs_intr; u64 stack_user_size; u64 phys_addr; u64 cgroup; u64 data_page_size; u64 code_page_size; } ____cacheline_aligned; /* default value for data source */ #define PERF_MEM_NA (PERF_MEM_S(OP, NA) |\ PERF_MEM_S(LVL, NA) |\ PERF_MEM_S(SNOOP, NA) |\ PERF_MEM_S(LOCK, NA) |\ PERF_MEM_S(TLB, NA)) static inline void perf_sample_data_init(struct perf_sample_data *data, u64 addr, u64 period) { /* remaining struct members initialized in perf_prepare_sample() */ data->addr = addr; data->raw = NULL; data->br_stack = NULL; data->period = period; data->weight.full = 0; data->data_src.val = PERF_MEM_NA; data->txn = 0; } extern void perf_output_sample(struct perf_output_handle *handle, struct perf_event_header *header, struct perf_sample_data *data, struct perf_event *event); extern void perf_prepare_sample(struct perf_event_header *header, struct perf_sample_data *data, struct perf_event *event, struct pt_regs *regs); extern int perf_event_overflow(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs); extern void perf_event_output_forward(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs); extern void perf_event_output_backward(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs); extern int perf_event_output(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs); static inline bool is_default_overflow_handler(struct perf_event *event) { if (likely(event->overflow_handler == perf_event_output_forward)) return true; if (unlikely(event->overflow_handler == perf_event_output_backward)) return true; return false; } extern void perf_event_header__init_id(struct perf_event_header *header, struct perf_sample_data *data, struct perf_event *event); extern void perf_event__output_id_sample(struct perf_event *event, struct perf_output_handle *handle, struct perf_sample_data *sample); extern void perf_log_lost_samples(struct perf_event *event, u64 lost); static inline bool event_has_any_exclude_flag(struct perf_event *event) { struct perf_event_attr *attr = &event->attr; return attr->exclude_idle || attr->exclude_user || attr->exclude_kernel || attr->exclude_hv || attr->exclude_guest || attr->exclude_host; } static inline bool is_sampling_event(struct perf_event *event) { return event->attr.sample_period != 0; } /* * Return 1 for a software event, 0 for a hardware event */ static inline int is_software_event(struct perf_event *event) { return event->event_caps & PERF_EV_CAP_SOFTWARE; } /* * Return 1 for event in sw context, 0 for event in hw context */ static inline int in_software_context(struct perf_event *event) { return event->ctx->pmu->task_ctx_nr == perf_sw_context; } static inline int is_exclusive_pmu(struct pmu *pmu) { return pmu->capabilities & PERF_PMU_CAP_EXCLUSIVE; } extern struct static_key perf_swevent_enabled[PERF_COUNT_SW_MAX]; extern void ___perf_sw_event(u32, u64, struct pt_regs *, u64); extern void __perf_sw_event(u32, u64, struct pt_regs *, u64); #ifndef perf_arch_fetch_caller_regs static inline void perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip) { } #endif /* * When generating a perf sample in-line, instead of from an interrupt / * exception, we lack a pt_regs. This is typically used from software events * like: SW_CONTEXT_SWITCHES, SW_MIGRATIONS and the tie-in with tracepoints. * * We typically don't need a full set, but (for x86) do require: * - ip for PERF_SAMPLE_IP * - cs for user_mode() tests * - sp for PERF_SAMPLE_CALLCHAIN * - eflags for MISC bits and CALLCHAIN (see: perf_hw_regs()) * * NOTE: assumes @regs is otherwise already 0 filled; this is important for * things like PERF_SAMPLE_REGS_INTR. */ static inline void perf_fetch_caller_regs(struct pt_regs *regs) { perf_arch_fetch_caller_regs(regs, CALLER_ADDR0); } static __always_inline void perf_sw_event(u32 event_id, u64 nr, struct pt_regs *regs, u64 addr) { if (static_key_false(&perf_swevent_enabled[event_id])) __perf_sw_event(event_id, nr, regs, addr); } DECLARE_PER_CPU(struct pt_regs, __perf_regs[4]); /* * 'Special' version for the scheduler, it hard assumes no recursion, * which is guaranteed by us not actually scheduling inside other swevents * because those disable preemption. */ static __always_inline void __perf_sw_event_sched(u32 event_id, u64 nr, u64 addr) { struct pt_regs *regs = this_cpu_ptr(&__perf_regs[0]); perf_fetch_caller_regs(regs); ___perf_sw_event(event_id, nr, regs, addr); } extern struct static_key_false perf_sched_events; static __always_inline bool __perf_sw_enabled(int swevt) { return static_key_false(&perf_swevent_enabled[swevt]); } static inline void perf_event_task_migrate(struct task_struct *task) { if (__perf_sw_enabled(PERF_COUNT_SW_CPU_MIGRATIONS)) task->sched_migrated = 1; } static inline void perf_event_task_sched_in(struct task_struct *prev, struct task_struct *task) { if (static_branch_unlikely(&perf_sched_events)) __perf_event_task_sched_in(prev, task); if (__perf_sw_enabled(PERF_COUNT_SW_CPU_MIGRATIONS) && task->sched_migrated) { __perf_sw_event_sched(PERF_COUNT_SW_CPU_MIGRATIONS, 1, 0); task->sched_migrated = 0; } } static inline void perf_event_task_sched_out(struct task_struct *prev, struct task_struct *next) { if (__perf_sw_enabled(PERF_COUNT_SW_CONTEXT_SWITCHES)) __perf_sw_event_sched(PERF_COUNT_SW_CONTEXT_SWITCHES, 1, 0); #ifdef CONFIG_CGROUP_PERF if (__perf_sw_enabled(PERF_COUNT_SW_CGROUP_SWITCHES) && perf_cgroup_from_task(prev, NULL) != perf_cgroup_from_task(next, NULL)) __perf_sw_event_sched(PERF_COUNT_SW_CGROUP_SWITCHES, 1, 0); #endif if (static_branch_unlikely(&perf_sched_events)) __perf_event_task_sched_out(prev, next); } extern void perf_event_mmap(struct vm_area_struct *vma); extern void perf_event_ksymbol(u16 ksym_type, u64 addr, u32 len, bool unregister, const char *sym); extern void perf_event_bpf_event(struct bpf_prog *prog, enum perf_bpf_event_type type, u16 flags); extern struct perf_guest_info_callbacks __rcu *perf_guest_cbs; static inline struct perf_guest_info_callbacks *perf_get_guest_cbs(void) { /* * Callbacks are RCU-protected and must be READ_ONCE to avoid reloading * the callbacks between a !NULL check and dereferences, to ensure * pending stores/changes to the callback pointers are visible before a * non-NULL perf_guest_cbs is visible to readers, and to prevent a * module from unloading callbacks while readers are active. */ return rcu_dereference(perf_guest_cbs); } extern int perf_register_guest_info_callbacks(struct perf_guest_info_callbacks *callbacks); extern int perf_unregister_guest_info_callbacks(struct perf_guest_info_callbacks *callbacks); extern void perf_event_exec(void); extern void perf_event_comm(struct task_struct *tsk, bool exec); extern void perf_event_namespaces(struct task_struct *tsk); extern void perf_event_fork(struct task_struct *tsk); extern void perf_event_text_poke(const void *addr, const void *old_bytes, size_t old_len, const void *new_bytes, size_t new_len); /* Callchains */ DECLARE_PER_CPU(struct perf_callchain_entry, perf_callchain_entry); extern void perf_callchain_user(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs); extern void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs); extern struct perf_callchain_entry * get_perf_callchain(struct pt_regs *regs, u32 init_nr, bool kernel, bool user, u32 max_stack, bool crosstask, bool add_mark); extern struct perf_callchain_entry *perf_callchain(struct perf_event *event, struct pt_regs *regs); extern int get_callchain_buffers(int max_stack); extern void put_callchain_buffers(void); extern struct perf_callchain_entry *get_callchain_entry(int *rctx); extern void put_callchain_entry(int rctx); extern int sysctl_perf_event_max_stack; extern int sysctl_perf_event_max_contexts_per_stack; static inline int perf_callchain_store_context(struct perf_callchain_entry_ctx *ctx, u64 ip) { if (ctx->contexts < sysctl_perf_event_max_contexts_per_stack) { struct perf_callchain_entry *entry = ctx->entry; entry->ip[entry->nr++] = ip; ++ctx->contexts; return 0; } else { ctx->contexts_maxed = true; return -1; /* no more room, stop walking the stack */ } } static inline int perf_callchain_store(struct perf_callchain_entry_ctx *ctx, u64 ip) { if (ctx->nr < ctx->max_stack && !ctx->contexts_maxed) { struct perf_callchain_entry *entry = ctx->entry; entry->ip[entry->nr++] = ip; ++ctx->nr; return 0; } else { return -1; /* no more room, stop walking the stack */ } } extern int sysctl_perf_event_paranoid; extern int sysctl_perf_event_mlock; extern int sysctl_perf_event_sample_rate; extern int sysctl_perf_cpu_time_max_percent; extern void perf_sample_event_took(u64 sample_len_ns); int perf_proc_update_handler(struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos); int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos); int perf_event_max_stack_handler(struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos); /* Access to perf_event_open(2) syscall. */ #define PERF_SECURITY_OPEN 0 /* Finer grained perf_event_open(2) access control. */ #define PERF_SECURITY_CPU 1 #define PERF_SECURITY_KERNEL 2 #define PERF_SECURITY_TRACEPOINT 3 #define PERF_SECURITY_MAX 4 static inline bool perf_paranoid_any(void) { return sysctl_perf_event_paranoid >= PERF_SECURITY_MAX; } static inline int perf_is_paranoid(void) { return sysctl_perf_event_paranoid > -1; } static inline int perf_allow_kernel(struct perf_event_attr *attr) { if (sysctl_perf_event_paranoid > 1 && !perfmon_capable()) return -EACCES; return security_perf_event_open(attr, PERF_SECURITY_KERNEL); } static inline int perf_allow_cpu(struct perf_event_attr *attr) { if (sysctl_perf_event_paranoid > 0 && !perfmon_capable()) return -EACCES; return security_perf_event_open(attr, PERF_SECURITY_CPU); } static inline int perf_allow_tracepoint(struct perf_event_attr *attr) { if (sysctl_perf_event_paranoid > -1 && !perfmon_capable()) return -EPERM; return security_perf_event_open(attr, PERF_SECURITY_TRACEPOINT); } extern void perf_event_init(void); extern void perf_tp_event(u16 event_type, u64 count, void *record, int entry_size, struct pt_regs *regs, struct hlist_head *head, int rctx, struct task_struct *task); extern void perf_bp_event(struct perf_event *event, void *data); #ifndef perf_misc_flags # define perf_misc_flags(regs) \ (user_mode(regs) ? PERF_RECORD_MISC_USER : PERF_RECORD_MISC_KERNEL) # define perf_instruction_pointer(regs) instruction_pointer(regs) #endif #ifndef perf_arch_bpf_user_pt_regs # define perf_arch_bpf_user_pt_regs(regs) regs #endif static inline bool has_branch_stack(struct perf_event *event) { return event->attr.sample_type & PERF_SAMPLE_BRANCH_STACK; } static inline bool needs_branch_stack(struct perf_event *event) { return event->attr.branch_sample_type != 0; } static inline bool has_aux(struct perf_event *event) { return event->pmu->setup_aux; } static inline bool is_write_backward(struct perf_event *event) { return !!event->attr.write_backward; } static inline bool has_addr_filter(struct perf_event *event) { return event->pmu->nr_addr_filters; } /* * An inherited event uses parent's filters */ static inline struct perf_addr_filters_head * perf_event_addr_filters(struct perf_event *event) { struct perf_addr_filters_head *ifh = &event->addr_filters; if (event->parent) ifh = &event->parent->addr_filters; return ifh; } extern void perf_event_addr_filters_sync(struct perf_event *event); extern int perf_output_begin(struct perf_output_handle *handle, struct perf_sample_data *data, struct perf_event *event, unsigned int size); extern int perf_output_begin_forward(struct perf_output_handle *handle, struct perf_sample_data *data, struct perf_event *event, unsigned int size); extern int perf_output_begin_backward(struct perf_output_handle *handle, struct perf_sample_data *data, struct perf_event *event, unsigned int size); extern void perf_output_end(struct perf_output_handle *handle); extern unsigned int perf_output_copy(struct perf_output_handle *handle, const void *buf, unsigned int len); extern unsigned int perf_output_skip(struct perf_output_handle *handle, unsigned int len); extern long perf_output_copy_aux(struct perf_output_handle *aux_handle, struct perf_output_handle *handle, unsigned long from, unsigned long to); extern int perf_swevent_get_recursion_context(void); extern void perf_swevent_put_recursion_context(int rctx); extern u64 perf_swevent_set_period(struct perf_event *event); extern void perf_event_enable(struct perf_event *event); extern void perf_event_disable(struct perf_event *event); extern void perf_event_disable_local(struct perf_event *event); extern void perf_event_disable_inatomic(struct perf_event *event); extern void perf_event_task_tick(void); extern int perf_event_account_interrupt(struct perf_event *event); extern int perf_event_period(struct perf_event *event, u64 value); extern u64 perf_event_pause(struct perf_event *event, bool reset); #else /* !CONFIG_PERF_EVENTS: */ static inline void * perf_aux_output_begin(struct perf_output_handle *handle, struct perf_event *event) { return NULL; } static inline void perf_aux_output_end(struct perf_output_handle *handle, unsigned long size) { } static inline int perf_aux_output_skip(struct perf_output_handle *handle, unsigned long size) { return -EINVAL; } static inline void * perf_get_aux(struct perf_output_handle *handle) { return NULL; } static inline void perf_event_task_migrate(struct task_struct *task) { } static inline void perf_event_task_sched_in(struct task_struct *prev, struct task_struct *task) { } static inline void perf_event_task_sched_out(struct task_struct *prev, struct task_struct *next) { } static inline int perf_event_init_task(struct task_struct *child, u64 clone_flags) { return 0; } static inline void perf_event_exit_task(struct task_struct *child) { } static inline void perf_event_free_task(struct task_struct *task) { } static inline void perf_event_delayed_put(struct task_struct *task) { } static inline struct file *perf_event_get(unsigned int fd) { return ERR_PTR(-EINVAL); } static inline const struct perf_event *perf_get_event(struct file *file) { return ERR_PTR(-EINVAL); } static inline const struct perf_event_attr *perf_event_attrs(struct perf_event *event) { return ERR_PTR(-EINVAL); } static inline int perf_event_read_local(struct perf_event *event, u64 *value, u64 *enabled, u64 *running) { return -EINVAL; } static inline void perf_event_print_debug(void) { } static inline int perf_event_task_disable(void) { return -EINVAL; } static inline int perf_event_task_enable(void) { return -EINVAL; } static inline int perf_event_refresh(struct perf_event *event, int refresh) { return -EINVAL; } static inline void perf_sw_event(u32 event_id, u64 nr, struct pt_regs *regs, u64 addr) { } static inline void perf_bp_event(struct perf_event *event, void *data) { } static inline int perf_register_guest_info_callbacks (struct perf_guest_info_callbacks *callbacks) { return 0; } static inline int perf_unregister_guest_info_callbacks (struct perf_guest_info_callbacks *callbacks) { return 0; } static inline void perf_event_mmap(struct vm_area_struct *vma) { } typedef int (perf_ksymbol_get_name_f)(char *name, int name_len, void *data); static inline void perf_event_ksymbol(u16 ksym_type, u64 addr, u32 len, bool unregister, const char *sym) { } static inline void perf_event_bpf_event(struct bpf_prog *prog, enum perf_bpf_event_type type, u16 flags) { } static inline void perf_event_exec(void) { } static inline void perf_event_comm(struct task_struct *tsk, bool exec) { } static inline void perf_event_namespaces(struct task_struct *tsk) { } static inline void perf_event_fork(struct task_struct *tsk) { } static inline void perf_event_text_poke(const void *addr, const void *old_bytes, size_t old_len, const void *new_bytes, size_t new_len) { } static inline void perf_event_init(void) { } static inline int perf_swevent_get_recursion_context(void) { return -1; } static inline void perf_swevent_put_recursion_context(int rctx) { } static inline u64 perf_swevent_set_period(struct perf_event *event) { return 0; } static inline void perf_event_enable(struct perf_event *event) { } static inline void perf_event_disable(struct perf_event *event) { } static inline int __perf_event_disable(void *info) { return -1; } static inline void perf_event_task_tick(void) { } static inline int perf_event_release_kernel(struct perf_event *event) { return 0; } static inline int perf_event_period(struct perf_event *event, u64 value) { return -EINVAL; } static inline u64 perf_event_pause(struct perf_event *event, bool reset) { return 0; } #endif #if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_INTEL) extern void perf_restore_debug_store(void); #else static inline void perf_restore_debug_store(void) { } #endif static __always_inline bool perf_raw_frag_last(const struct perf_raw_frag *frag) { return frag->pad < sizeof(u64); } #define perf_output_put(handle, x) perf_output_copy((handle), &(x), sizeof(x)) struct perf_pmu_events_attr { struct device_attribute attr; u64 id; const char *event_str; }; struct perf_pmu_events_ht_attr { struct device_attribute attr; u64 id; const char *event_str_ht; const char *event_str_noht; }; struct perf_pmu_events_hybrid_attr { struct device_attribute attr; u64 id; const char *event_str; u64 pmu_type; }; struct perf_pmu_format_hybrid_attr { struct device_attribute attr; u64 pmu_type; }; ssize_t perf_event_sysfs_show(struct device *dev, struct device_attribute *attr, char *page); #define PMU_EVENT_ATTR(_name, _var, _id, _show) \ static struct perf_pmu_events_attr _var = { \ .attr = __ATTR(_name, 0444, _show, NULL), \ .id = _id, \ }; #define PMU_EVENT_ATTR_STRING(_name, _var, _str) \ static struct perf_pmu_events_attr _var = { \ .attr = __ATTR(_name, 0444, perf_event_sysfs_show, NULL), \ .id = 0, \ .event_str = _str, \ }; #define PMU_EVENT_ATTR_ID(_name, _show, _id) \ (&((struct perf_pmu_events_attr[]) { \ { .attr = __ATTR(_name, 0444, _show, NULL), \ .id = _id, } \ })[0].attr.attr) #define PMU_FORMAT_ATTR(_name, _format) \ static ssize_t \ _name##_show(struct device *dev, \ struct device_attribute *attr, \ char *page) \ { \ BUILD_BUG_ON(sizeof(_format) >= PAGE_SIZE); \ return sprintf(page, _format "\n"); \ } \ \ static struct device_attribute format_attr_##_name = __ATTR_RO(_name) /* Performance counter hotplug functions */ #ifdef CONFIG_PERF_EVENTS int perf_event_init_cpu(unsigned int cpu); int perf_event_exit_cpu(unsigned int cpu); #else #define perf_event_init_cpu NULL #define perf_event_exit_cpu NULL #endif extern void __weak arch_perf_update_userpage(struct perf_event *event, struct perf_event_mmap_page *userpg, u64 now); #ifdef CONFIG_MMU extern __weak u64 arch_perf_get_page_size(struct mm_struct *mm, unsigned long addr); #endif #endif /* _LINUX_PERF_EVENT_H */
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