Fork of alistair23 Linux kernel for reMarkable from https://github.com/alistair23/linux
cb6102bd99
Currently, if no matching policy node can be found for a trace source, we'll try to use "default" policy node, then, if that doesn't exist, we'll pick the first node, in order of creation. If that also fails, we'll allocate M/C range from the beginning of the device's M/C range. This makes it difficult to know which node (if any) was used in any particular case. In order to make things more deterministic, the new order is as follows: * if they supply ID string, use that and nothing else, * if they are a task, use their task name (comm), * use "default", if it exists, * return failure, to let them know there is no suitable rule. This should provide enough convenience with the "default" catch-all node, while not leaving *everything* to chance. As a side effect, this relaxes the requirement of using ioctl() for identification with the possibility of using task names as policy nodes. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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README
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.
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.