User visible:
- Beautifiers for the 'cmd' arg of several ioctl types, including:
sound, DRM, KVM, vhost virtio and perf_events.
This was done by using scripts that extract the information from
the UAPI headers, generating string tables that are then used in
the 'perf trace' syscall argument ioctl beautifier.
More work needed to further use it, for instance, to use the
_IOC_DIR value where it is used sanely to suppress the third
argument, to set formatters for non-pointer values and ultimately
for using eBPF + pahole-like code to collect + beautify structs in
the third arg.
Using the current scheme of having tools/ copies of kernel headers
we'll make sure tooling stays working when changes are made to the
kernel ABI headers and will be notified when they get changed,
reducing the time for 'perf trace' to support new ABIs and allowing
the tools/perf/ codebase to have the definitions it needs to
build in dozens of distros/versions, as routinely tested using
containers for, at this time, 47 environments. (Arnaldo Carvalho de Melo)
Infrastructure
- Clarify header version warning message (Ingo Molnar)
- Sync kernel ABI headers with tooling headers (Ingo Molnar, Arnaldo Carvalho de Melo)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=C6F5
-----END PGP SIGNATURE-----
Merge tag 'perf-core-for-mingo-4.14-20170801' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements from Arnaldo Carvalho de Melo:
User visible changes:
- Beautifiers for the 'cmd' arg of several ioctl types, including:
sound, DRM, KVM, vhost virtio and perf_events.
This was done by using scripts that extract the information from
the UAPI headers, generating string tables that are then used in
the 'perf trace' syscall argument ioctl beautifier.
More work needed to further use it, for instance, to use the
_IOC_DIR value where it is used sanely to suppress the third
argument, to set formatters for non-pointer values and ultimately
for using eBPF + pahole-like code to collect + beautify structs in
the third arg.
Using the current scheme of having tools/ copies of kernel headers
we'll make sure tooling stays working when changes are made to the
kernel ABI headers and will be notified when they get changed,
reducing the time for 'perf trace' to support new ABIs and allowing
the tools/perf/ codebase to have the definitions it needs to
build in dozens of distros/versions, as routinely tested using
containers for, at this time, 47 environments. (Arnaldo Carvalho de Melo)
Infrastructure changes:
- Clarify header version warning message (Ingo Molnar)
- Sync kernel ABI headers with tooling headers (Ingo Molnar, Arnaldo Carvalho de Melo)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
82119cbe8e