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0259bf63f7
It was unnecessarily disabling and enabling PMUs for each event. It should be done at PMU level. Add pmu_ctx->nr_freq counter to check it at each PMU. As PMU context has separate active lists for pinned group and flexible group, factor out a new function to do the job. Another minor optimization is that it can skip PMUs w/ CAP_NO_INTERRUPT even if it needs to unthrottle sampling events. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Mingwei Zhang <mizhang@google.com> Reviewed-by: Ian Rogers <irogers@google.com> Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Link: https://lore.kernel.org/r/20240207050545.2727923-1-namhyung@kernel.org |
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| ipc | ||
| kernel | ||
| lib | ||
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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 reStructuredText 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.