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45717b7fb7
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Arnaldo Carvalho de Melo 45717b7fb7 perf trace beautify ioctl: Beautify KVM ioctl's 'cmd' arg 
Also trying a new approach, using a copy of uapi/linux/kvm.h we auto
generate the string tables, then include it in the ioctl cmd beautifier.

This way either the KVM developers will add the new commands to the
tools/ copy, like is happening with other areas of tools/include/ (bpf.h
comes to mind), or we'll be notified when building perf that our copy
drifted.

E.g., a tracing a process and its threads, but would work for system wide as
well, just drop that '-p 21238', to see ioctls for DRM, tty, sound, etc:

  # perf trace -e ioctl -p 21238 2>&1 | grep -v KVM_RUN
    7801.536 ( 0.003 ms): CPU 0/KVM/21276 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IRQ_LINE_STATUS, arg: 0x7f484c6c73c0) = 0
  <SNIP lots of the last one>
    7801.715 ( 0.001 ms): CPU 0/KVM/21276 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IRQ_LINE_STATUS, arg: 0x7f484c6c73e0) = 0
   11001.051 ( 0.008 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_SIGNAL_MSI, arg: 0x563c83379d70) = 1
   11001.225 ( 0.005 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_SIGNAL_MSI, arg: 0x563c83379d70) = 1
   10750.377 (249.963 ms): CPU 0/KVM/21276  ... [continued]: ioctl()) = 0
   11011.780 ( 0.015 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_SIGNAL_MSI, arg: 0x563c83379d90) = 1
   11011.929 ( 0.005 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_SIGNAL_MSI, arg: 0x7fff053e1000) = 1
   11012.090 ( 0.004 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_SIGNAL_MSI, arg: 0x563c83379d70) = 1
   11023.127 ( 0.020 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_SIGNAL_MSI, arg: 0x563c83379d90) = 1
   11000.483 (249.807 ms): CPU 0/KVM/21276  ... [continued]: ioctl()) = 0
   25620.877 ( 0.042 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IRQ_LINE_STATUS, arg: 0x7fff053e1080) = 0
  <SNIP several of the last one>
   25621.025 ( 0.002 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IRQ_LINE_STATUS, arg: 0x7fff053e10a0) = 0
   25500.803 (120.186 ms): CPU 0/KVM/21276  ... [continued]: ioctl()) = 0
   25621.078 ( 0.005 ms): CPU 0/KVM/21276 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IRQ_LINE_STATUS, arg: 0x7f484c6c73c0) = 0
  <SNIP lots of the last one>
   25621.346 ( 0.001 ms): CPU 0/KVM/21276 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IRQ_LINE_STATUS, arg: 0x7f484c6c73e0) = 0
   40456.997 ( 0.100 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x30, 0x8), arg: 0x7fff053dffe0) = 0
   40457.100 ( 0.019 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x30, 0x8), arg: 0x7fff053dffe0) = 0
   40457.133 ( 0.002 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (READ|WRITE, 0xaf, 0x12, 0x8), arg: 0x7fff053dff60) = 0
   40457.139 ( 0.001 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (READ|WRITE, 0xaf, 0x12, 0x8), arg: 0x7fff053dff60) = 0
   40458.503 ( 0.027 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IOEVENTFD, arg: 0x7fff053dfc80) = 0
   40458.601 ( 0.030 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IOEVENTFD, arg: 0x7fff053dfc80) = 0
   40458.649 ( 0.003 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x21, 0x8), arg: 0x7fff053dff20) = 0
   40458.654 ( 0.002 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x21, 0x8), arg: 0x7fff053dff20) = 0
   40458.657 ( 0.018 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IRQFD, arg: 0x7fff053dff00  ) = 0
   40459.077 ( 0.017 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IRQFD, arg: 0x7fff053dff00  ) = 0
   40459.123 ( 0.017 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IOEVENTFD, arg: 0x7fff053dfd20) = 0
  <SNIP lots of the last one>
   40463.477 ( 0.013 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IOEVENTFD, arg: 0x7fff053dfd20) = 0
   40464.874 ( 0.010 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_GET_VCPU_EVENTS, arg: 0x7fff053e0000) = 0
   40464.892 ( 0.048 ms): qemu-system-x8/21238 ioctl(fd: 12</dev/kvm>, cmd: KVM_CHECK_EXTENSION, arg: 0x4c           ) = 1
   40464.991 ( 0.002 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_GET_CLOCK, arg: 0x7fff053e0040) = 0
   40464.962 ( 0.013 ms): CPU 0/KVM/21276 ioctl(fd: 20<anon_inode:kvm-vcpu>, cmd: KVM_GET_MSRS, arg: 0x7f484c6c7670) = 1
   44540.437 ( 0.103 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_SET_GSI_ROUTING, arg: 0x563c7c93c000) = 0
   44540.544 ( 0.008 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IRQFD, arg: 0x7fff053dfea0  ) = 0
   44540.555 ( 0.029 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_SET_GSI_ROUTING, arg: 0x563c7c93c000) = 0
   44540.586 ( 0.003 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IRQFD, arg: 0x7fff053dfea0  ) = 0
   44540.592 ( 0.027 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_SET_GSI_ROUTING, arg: 0x563c7c93c000) = 0
   44540.625 ( 0.005 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x21, 0x8), arg: 0x7fff053dfe20) = 0
   44540.639 ( 0.018 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_SET_GSI_ROUTING, arg: 0x563c7c93c000) = 0
   44540.658 ( 0.003 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x21, 0x8), arg: 0x7fff053dfe20) = 0
   44540.686 ( 0.015 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IOEVENTFD, arg: 0x7fff053dfbe0) = 0
   44540.727 ( 0.014 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IOEVENTFD, arg: 0x7fff053dfbe0) = 0
   44540.748 ( 0.005 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0, 0x8), arg: 0x7fff053dfe88) = 0
   44540.754 ( 0.026 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x3, 0x8), arg: 0x563c7c906870) = 0
   44540.783 ( 0.002 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x10, 0x8), arg: 0x7fff053dff00) = 0
   44540.787 ( 0.002 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x12, 0x8), arg: 0x7fff053dff00) = 0
   44540.793 ( 0.002 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x11, 0x28), arg: 0x7fff053dfe70) = 0
   44540.796 ( 0.010 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x20, 0x8), arg: 0x7fff053dfef0) = 0
   44540.811 ( 0.002 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x10, 0x8), arg: 0x7fff053dff00) = 0
   44540.814 ( 0.002 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x12, 0x8), arg: 0x7fff053dff00) = 0
   44540.819 ( 0.002 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x11, 0x28), arg: 0x7fff053dfe70) = 0
   44540.822 ( 0.005 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x20, 0x8), arg: 0x7fff053dfef0) = 0
   44540.837 ( 0.006 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x30, 0x8), arg: 0x7fff053dff80) = 0
   44540.862 ( 0.004 ms): qemu-system-x8/21238 ioctl(fd: 27</dev/vhost-net>, cmd: (WRITE, 0xaf, 0x30, 0x8), arg: 0x7fff053dff80) = 0
   44540.887 ( 0.014 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IOEVENTFD, arg: 0x7fff053dfd00) = 0
  <SNIP lots of the last one>
   44542.756 ( 0.020 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_IOEVENTFD, arg: 0x7fff053dfd00) = 0
   44542.809 ( 0.007 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_SET_VCPU_EVENTS, arg: 0x7fff053dffb0) = 0
   44542.819 ( 0.003 ms): qemu-system-x8/21238 ioctl(fd: 12</dev/kvm>, cmd: KVM_CHECK_EXTENSION, arg: 0x4c           ) = 1
   44543.016 ( 0.004 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_SET_CLOCK, arg: 0x7fff053dfff0) = 0
   44543.022 ( 0.008 ms): qemu-system-x8/21238 ioctl(fd: 20<anon_inode:kvm-vcpu>, cmd: KVM_KVMCLOCK_CTRL             ) = 0
   46952.502 ( 0.010 ms): qemu-system-x8/21238 ioctl(fd: 13<anon_inode:kvm-vm>, cmd: KVM_SIGNAL_MSI, arg: 0x563c83379d70) = 1
   46829.292 (249.860 ms): CPU 0/KVM/21276  ... [continued]: ioctl()) = 0
  ^C
[root@jouet linux]#

Since there are clashes in _IOC_NR() for some cases, notably ioctls with
PPC_ and ARM_ in its name and some that depend on some internal state to
be valid, but use the same number as others, those were removed in the
shell script that builds the table, tools/perf/trace/beauty/kvm_ioctl.sh.

Since so far we're supporting only x86 in the 'cmd' ioctl arg beautifier
in perf trace, we can leave fully supporting these ioctls for later.

There are some more to handle here, notably the one for /dev/vhost-net, will
come later.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-zxhebe579n338d7qrnjoctes@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-08-01 13:02:52 -03:00
..
accounting
arch tools headers: Sync kernel ABI headers with tooling headers 2017-07-31 10:35:28 -03:00
build Merge branch 'perf/urgent' into perf/core, to pick up latest fixes and refresh the tree 2017-07-30 11:15:13 +02:00
cgroup
firewire
gpio
hv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-07-05 12:31:59 -07:00
iio
include tools include uapi: Grab a copy of linux/kvm.h 2017-08-01 13:02:51 -03:00
kvm/kvm_stat tools/kvm_stat: add new interactive command 'b' 2017-06-27 16:44:50 +02:00
laptop
leds
lguest
lib perf build: Clarify open-coded header version warning message 2017-07-31 10:30:06 -03:00
net tools: bpf_jit_disasm: Handle large images. 2017-06-14 15:03:22 -04:00
nfsd
objtool objtool: Fix sibling call detection logic 2017-07-08 10:29:48 +02:00
pci
pcmcia
perf perf trace beautify ioctl: Beautify KVM ioctl's 'cmd' arg 2017-08-01 13:02:52 -03:00
power ACPI updates for v4.13-rc1 2017-07-04 14:16:49 -07:00
scripts
spi
testing Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-07-20 16:33:39 -07:00
thermal/tmon
time
usb usb: changes for v4.13 merge window 2017-06-20 11:39:34 +08:00
virtio
vm
Makefile