943b043aee
Some benchmarks don't have either "consumer" or "producer" sides. For example, trig-tp and other BPF triggering benchmarks don't have consumers, as they only do "producing" by calling into syscall or predefined uproes. As such it's valid for some benchmarks to have zero consumers or producers. So allows to specify `-c0` explicitly. This triggers another problem. If benchmark doesn't support either consumer or producer side, consumer_thread/producer_thread callback will be NULL, but benchmark runner will attempt to use those NULL callback to create threads anyways. So instead of crashing with SIGSEGV in case of misconfigured benchmark, detect the condition and report error. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/bpf/20240201172027.604869-6-andrii@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.