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Hyeonggon Yoo 6c610dba6e tracing: Add WARN_ON_ONCE when returned value is negative
ret is assigned return value of event_hist_trigger_func, but the value
is unused. It is better to warn when returned value is negative,
rather than just ignoring it.

Link: https://lkml.kernel.org/r/20210529061423.GA103954@hyeyoo

Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2021-06-10 11:16:20 -04:00
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include trace: replace WB_REASON_FOREIGN_FLUSH with a string 2021-06-10 11:16:20 -04:00
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kernel tracing: Add WARN_ON_ONCE when returned value is negative 2021-06-10 11:16:20 -04:00
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tools tools/bootconfig: Simplify expression 2021-06-10 11:16:20 -04:00
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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.