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b94bc80df6
Currently, the trace histograms relies on it using absolute time stamps to trigger the tracing to not use the temp buffer if filters are set. That's because the histograms need the full timestamp that is saved in the ring buffer. That is no longer the case, as the ring_buffer_event_time_stamp() can now return the time stamp for all events without all triggering a full absolute time stamp. Now that the absolute time stamp is an unrelated dependency to not using the filters. There's nothing about having absolute timestamps to keep from using the filter buffer. Instead, change the interface to explicitly state to disable filter buffering that the histogram logic can use. Link: https://lkml.kernel.org/r/20210316164113.847886563@goodmis.org Reviewed-by: Tom Zanussi <zanussi@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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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.