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/*
* BSD LICENSE
*
* Copyright(c) 2014-2026 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/**
* @brief Internal header file to PQoS monitoring initialization
*/
#ifndef __PQOS_HOSTMON_H__
#define __PQOS_HOSTMON_H__
#ifdef __cplusplus
extern "C" {
#endif
#include "pqos.h"
/**
* Core monitoring poll context
*/
struct pqos_mon_poll_ctx {
unsigned lcore;
pqos_channel_t channel_id;
unsigned cluster;
unsigned numa;
uint8_t quiet; /**< Do not warn abut RMID hijacking */
pqos_rmid_t rmid;
};
/**
* Perf monitoring poll context
*/
struct pqos_mon_perf_ctx {
int fd_llc;
int fd_mbl;
int fd_mbt;
int fd_inst;
int fd_cyc;
int fd_llc_misses;
int fd_llc_references;
};
/**
* Internal monitoring group data structure
*/
struct pqos_mon_data_internal {
/**
* The structure to store monitoring data
*/
struct {
struct {
struct {
uint64_t read;
uint64_t read_delta;
uint64_t write;
uint64_t write_delta;
} llc_misses;
struct {
uint64_t read;
uint64_t read_delta;
uint64_t write;
uint64_t write_delta;
} llc_references;
} pcie;
} values;
/**
* Perf specific section
*/
struct {
enum pqos_mon_event event; /**< Started perf events */
struct pqos_mon_perf_ctx *ctx; /**< Perf poll context for each
core/tid */
} perf;
/**
* Resctrl specific section
*/
struct {
enum pqos_mon_event event; /**< Started resctrl events */
char *mon_group;
struct pqos_event_values values_storage; /**< stores values
of monitoring group
that was moved to
another COS */
unsigned *l3id; /**< list of l3ids being monitored */
unsigned num_l3id; /**< Number of l3ids */
} resctrl;
/**
* Hw specific section
*/
struct {
enum pqos_mon_event event; /**< Started hw events */
struct pqos_mon_poll_ctx *ctx; /**< core, cluster & RMID */
unsigned num_ctx; /**< number of poll contexts */
} hw;
/* Uncore specific section */
struct {
unsigned num_sockets;
unsigned *sockets;
} uncore;
int valid_mbm_read; /**< flag to discard 1st invalid read */
int manage_memory; /**< mon data memory is managed by lib */
/* I/O RDT flags */
int valid_io_total_read; /**< flag to discard 1st invalid read */
int valid_io_miss_read; /**< flag to discard 1st invalid read */
};
/**
* @brief Initializes monitoring sub-module of the library (CMT)
*
* @param cpu cpu topology structure
* @param cap capabilities structure
* @param cfg library configuration structure
*
* @return Operation status
* @retval PQOS_RETVAL_OK success
* @retval PQOS_RETVAL_ERROR if error occurs
*/
int pqos_mon_init(const struct pqos_cpuinfo *cpu,
const struct pqos_cap *cap,
const struct pqos_config *cfg);
/**
* @brief Shuts down monitoring sub-module of the library
*
* @return Operation status
*/
int pqos_mon_fini(void);
/**
* @brief Poll monitoring data from requested groups
*
* @param group monitoring group pointer to be updated
*
* @return Operations status
* @retval PQOS_RETVAL_OK on success
*/
int pqos_mon_poll_events(struct pqos_mon_data *group);
#ifdef __cplusplus
}
#endif
#endif /* __PQOS_HOSTMON_H__ */
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