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https://git.rwth-aachen.de/acs/public/villas/node/
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69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
/** Linux kernel related functions.
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*
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* @file
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* @author Steffen Vogel <post@steffenvogel.de>
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* @copyright 2014-2022, Institute for Automation of Complex Power Systems, EONERC
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* @license Apache License 2.0
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*********************************************************************************/
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#pragma once
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#include <cstddef>
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#include <villas/version.hpp>
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namespace villas {
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namespace kernel {
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/** Get the version of the kernel. */
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utils::Version getVersion();
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/** Get number of reserved hugepages. */
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int getNrHugepages();
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/** Set number of reserved hugepages. */
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int setNrHugepages(int nr);
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/** Get kernel cmdline parameter
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*
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* See https://www.kernel.org/doc/Documentation/kernel-parameters.txt
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*
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* @param param The cmdline parameter to look for.
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* @param buf The string buffer to which the parameter value will be copied to.
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* @param len The length of the buffer \p value
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* @retval 0 Parameter \p key was found and value was copied to \p value
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* @reval <>0 Kernel was not booted with parameter \p key
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*/
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int getCmdlineParam(const char *param, char *buf, size_t len);
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/** Checks if a kernel module is loaded
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*
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* @param module the name of the module
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* @retval 0 Module is loaded.
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* @reval <>0 Module is not loaded.
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*/
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int isModuleLoaded(const char *module);
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/** Load kernel module via modprobe */
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int loadModule(const char *module);
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/** Set parameter of loaded kernel module */
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int setModuleParam(const char *module, const char *param, const char *value);
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/** Get cacheline size in bytes */
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int getCachelineSize();
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/** Get the size of a standard page in bytes. */
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int getPageSize();
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/** Get the size of a huge page in bytes. */
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int getHugePageSize();
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/** Get CPU base frequency */
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int get_cpu_frequency(uint64_t *freq);
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/** Set SMP affinity of IRQ */
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int setIRQAffinity(unsigned irq, uintmax_t aff , uintmax_t *old);
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} // namespace villas
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} // namespace kernel
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