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0dd9286263
Currently the driver uses the PTP kthread to process handling and discarding of stale Tx timestamp requests. The function ice_ptp_tx_tstamp_cleanup is used for this. A separate thread creates complications for the driver as we now have both the main Tx timestamp processing IRQ checking timestamps as well as the kthread. Rather than using the kthread to handle this, simply check for stale timestamps within the ice_ptp_tx_tstamp function. This function must already process the timestamps anyways. If a Tx timestamp has been waiting for 2 seconds we simply clear the bit and discard the SKB. This avoids the complication of having separate threads polling, reducing overall CPU work. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Gurucharan G <gurucharanx.g@intel.com> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> |
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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.