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b33fb3cf6f
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
BPF:
Jiri Olsa:
- Preserve eBPF maps when loading kcore.
- Fix up DSO name padding in 'perf script --call-trace', as BPF DSO names are
much larger than what we used to have there.
- Add --show-bpf-events to 'perf script'.
perf trace:
Arnaldo Carvalho de Melo:
- Add string table generators and beautify arguments for the new fspick,
fsmount, fsconfig, fsopen, move_mount and open_tree syscalls, as well
as new values for arguments of clone and sync_file_range syscalls.
perf version:
Arnaldo Carvalho de Melo:
- Append 12 git SHA chars to the version string.
Namespaces:
Namhyung Kim:
- Add missing --namespaces option to 'perf top', to generate and process
namespace events, just like present for 'perf record'.
Intel PT:
Andrian Hunter:
- Fix itrace defaults for 'perf script', not using the 'use_browser' variable
to figure out what options are better for 'script' and 'report'
- Allow root fixing up buildid cache permissions in the perf-with-kcore.sh
script when sharing that cache with another user.
- Improve sync_switch, a facility used to synchronize decoding of HW
traces more closely with the point in the kerne where a context
switch took place, by processing the PERF_RECORD_CONTEXT_SWITCH "in"
metadata records too.
- Make the exported-sql-viewer.py GUI also support pyside2, which
upgrades from qt4 used in pyside to qt5. Use the argparser module
for more easily addition of new command line args.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.