cb7ca871c8
In the case of all tracing instances being off, sleep for the entire period. Q: Why not kill all threads so? A: It is valid and useful to start the threads with tracing off. For example, rtla disables tracing, starts the tracer, applies the scheduling setup to the threads, e.g., sched priority and cgroup, and then begin tracing with all set. Skipping the period helps to speed up rtla setup and save the trace after a stop tracing. Link: https://lkml.kernel.org/r/aa4dd9b7e76fcb63901fe5407e15ec002b318599.1686063934.git.bristot@kernel.org Cc: Juri Lelli <juri.lelli@redhat.com> Cc: William White <chwhite@redhat.com> Cc: Daniel Bristot de Oliveira <bristot@kernel.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.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.