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| Filename | Latest commit message | Latest commit date |
|---|---|---|
1ec2297c5c
Issuing "ip link set up/down" can block TSICR interrupts, what results in missing PTP Tx timestamp and no PPS pulse generation. Problem happens when the link is set up with the TSICR interrupts pending. ICR is cleared before enabling interrupts, while TSICR is not. When all TSICR interrupts are pending at this moment, time_sync interrupt will never be generated. TSICR should be cleared as well. In order to reproduce the issue: 1. Setup linux with IEEE 1588 grandmaster and PPS output enabled 2. Continue setting link up/down with random intervals between commands 3. Wait until PPS is not generated ( only one pulse is generated and PPS dies), and ptp4l complains constantly about Tx timeout. Signed-off-by: Joanna Yurdal <jyu@trackman.com> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> |
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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.