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The jevent "Compat" is used for uncore PMU alias or metric definitions. The same PMU driver has different PMU identifiers due to different hardware versions and types, but they may have some common PMU event. Since a Compat value can only match one identifier, when adding the same event alias to PMUs with different identifiers, each identifier needs to be defined once, which is not streamlined enough. So let "Compat" support using regular expression to match identifiers for uncore PMU alias. For example, if the "Compat" value is set to "43401|43c01", it would be able to match PMU identifiers such as "43401" or "43c01", which correspond to CMN600_r0p0 or CMN700_r0p0. Signed-off-by: Jing Zhang <renyu.zj@linux.alibaba.com> Reviewed-by: Ian Rogers <irogers@google.com> Tested-by: Ian Rogers <irogers@google.com> Cc: James Clark <james.clark@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Shuai Xue <xueshuai@linux.alibaba.com> Cc: Zhuo Song <zhuo.song@linux.alibaba.com> Cc: John Garry <john.g.garry@oracle.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/r/1695794391-34817-2-git-send-email-renyu.zj@linux.alibaba.com Signed-off-by: Namhyung Kim <namhyung@kernel.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.