ed3e9406bc
Looks like PMU in A64 is broken, it generates no interrupts at all and
as result 'perf top' shows no events.
Tested on Pine64-LTS.
Fixes: 34a97fcc71c2 ("arm64: dts: allwinner: a64: Add PMU node")
Cc: Harald Geyer <harald@ccbib.org>
Cc: Jared D. McNeill <jmcneill@NetBSD.org>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Reviewed-by: Emmanuel Vadot <manu@FreeBSD.org>
Signed-off-by: Maxime Ripard <mripard@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.