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Pull the latest perf/core updates from Arnaldo Carvalho de Melo: New features: - Introduce 'perf ftrace' a perf front end to the kernel's ftrace function and function_graph tracer, defaulting to the "function_graph" tracer, more work will be done in reviving this effort, forward porting it from its initial patch submission (Namhyung Kim) - Add 'e' and 'c' hotkeys to expand/collapse call chains for a single hist entry in the 'perf report' and 'perf top' TUI (Jiri Olsa) Fixes: - Fix wrong register name for arm64, used in 'perf probe' (He Kuang) - Fix map offsets in relocation in libbpf (Joe Stringer) - Fix looking up dwarf unwind stack info (Matija Glavinic Pecotic) Infrastructure changes: - libbpf prog functions sync with what is exported via uapi (Joe Stringer) Trivial changes: - Remove unnecessary checks and assignments in 'perf probe's try_to_find_absolute_address() (Markus Elfring) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.