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Steven Rostedt (VMware)
ff84c50cfb
As the iterator will be reading a live buffer, and if the event being read is on a page that a writer crosses, it will fail and try again, the condition in rb_iter_peek() that only allows a retry to happen three times is no longer valid. Allow rb_iter_peek() to retry more than three times without killing the ring buffer, but only if rb_iter_head_event() had failed at least once. Link: http://lkml.kernel.org/r/20200317213416.452888193@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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.