1
0
Fork 0
mirror of https://git.rwth-aachen.de/acs/public/villas/node/ synced 2025-03-16 00:00:02 +01:00
VILLASnode/common/include/villas/kernel/kernel.hpp
Steffen Vogel 31aabb9acf common: Add missing include
Signed-off-by: Steffen Vogel <post@steffenvogel.de>
2024-03-26 13:01:15 +01:00

67 lines
1.8 KiB
C++

/* Linux kernel related functions.
*
* Author: Steffen Vogel <post@steffenvogel.de>
* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
* SPDX-License-Identifier: Apache-2.0
*/
#pragma once
#include <cstddef>
#include <cstdint>
#include <villas/version.hpp>
namespace villas {
namespace kernel {
// Get the version of the kernel
utils::Version getVersion();
// Get number of reserved hugepages
int getNrHugepages();
// Set number of reserved hugepages
int setNrHugepages(int nr);
// Get kernel cmdline parameter
//
// See https://www.kernel.org/doc/Documentation/kernel-parameters.txt
//
// @param param The cmdline parameter to look for
// @param buf The string buffer to which the parameter value will be copied to
// @param len The length of the buffer \p value
// @retval 0 Parameter \p key was found and value was copied to \p value
// @reval <>0 Kernel was not booted with parameter \p key
int getCmdlineParam(const char *param, char *buf, size_t len);
// Checks if a kernel module is loaded
//
// @param module the name of the module
// @retval 0 Module is loaded
// @reval <>0 Module is not loaded
int isModuleLoaded(const char *module);
// Load kernel module via modprobe
int loadModule(const char *module);
// Set parameter of loaded kernel module
int setModuleParam(const char *module, const char *param, const char *value);
// Get cacheline size in bytes
int getCachelineSize();
// Get the size of a standard page in bytes
int getPageSize();
// Get the size of a huge page in bytes
int getHugePageSize();
// Get CPU base frequency
int get_cpu_frequency(uint64_t *freq);
// Set SMP affinity of IRQ
int setIRQAffinity(unsigned irq, uintmax_t aff, uintmax_t *old);
} // namespace kernel
} // namespace villas