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Arnaldo Carvalho de Melo 9db0e3635f perf evsel: Fall back to global 'perf_env' in perf_evsel__env()
I.e. if evsel->evlist or evsel->evlist->env isn't set, return the
environment for the running machine, as that would be set if reading
from a perf.data file.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-uqq4grmhbi12rwb0lfpo6lfu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
History 2019-09-30 17:29:57 -03:00
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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.