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Mahesh Bandewar 6b32d042aa selftest/ptp: update ptp selftest to exercise the gettimex options 
[ Upstream commit 3d07b691ee ]

With the inclusion of commit c259acab83 ("ptp/ioctl: support
MONOTONIC{,_RAW} timestamps for PTP_SYS_OFFSET_EXTENDED") clock_gettime()
now allows retrieval of pre/post timestamps for CLOCK_MONOTONIC and
CLOCK_MONOTONIC_RAW timebases along with the previously supported
CLOCK_REALTIME.

This patch adds a command line option 'y' to the testptp program to
choose one of the allowed timebases [realtime aka system, monotonic,
and monotonic-raw).

Signed-off-by: Mahesh Bandewar <maheshb@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Link: https://patch.msgid.link/20241003101506.769418-1-maheshb@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 76868642e4 ("testptp: Add option to open PHC in readonly mode")
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-02-06 16:41:51 +01:00
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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.

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.