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44fdf4ed26
event_idx is obtained from armv8pmu_get_event_idx(), and this idx must be between ARMV8_IDX_CYCLE_COUNTER and cpu_pmu->num_events. So it's unnecessary to do this check. Let's remove it. Signed-off-by: Qi Liu <liuqi115@huawei.com> Link: https://lore.kernel.org/r/1599213458-28394-1-git-send-email-liuqi115@huawei.com Signed-off-by: Will Deacon <will@kernel.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.