Normally only superuser/root can access perf counter data. However, superuser can set perf_stream_paranoid sysctl to 0 to allow non-privileged users to also access perf data. perf_stream_paranoid is introduced at the perf layer to allow different perf stream types to share this access mechanism. v2: Add kernel doc for non-static functions (Michal) Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Acked-by: José Roberto de Souza <jose.souza@intel.com> Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240618014609.3233427-3-ashutosh.dixit@intel.com
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.
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