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/*
* BSD LICENSE
*
* Copyright(c) 2014-2023 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.
*/
#include "monitoring.h"
#include "cap.h"
#include "hw_monitoring.h"
#include "log.h"
#include "os_monitoring.h"
#include "perf_monitoring.h"
#include "types.h"
#include "utils.h"
#ifdef __linux__
#include "resctrl.h"
#include "resctrl_monitoring.h"
#endif
/**
* ---------------------------------------
* Local macros
* ---------------------------------------
*/
/**
* ---------------------------------------
* Local data types
* ---------------------------------------
*/
/**
* ---------------------------------------
* Local data structures
* ---------------------------------------
*/
/**
* ---------------------------------------
* Local Functions
* ---------------------------------------
*/
/*
* =======================================
* =======================================
*
* initialize and shutdown
*
* =======================================
* =======================================
*/
int
pqos_mon_init(const struct pqos_cpuinfo *cpu,
const struct pqos_cap *cap,
const struct pqos_config *cfg)
{
const struct pqos_capability *item = NULL;
int ret;
enum pqos_interface interface = _pqos_get_inter();
UNUSED_PARAM(cfg);
ASSERT(cfg != NULL);
/**
* If monitoring capability has been discovered
* then get max RMID supported by a CPU socket
* and allocate memory for RMID table
*/
ret = pqos_cap_get_type(cap, PQOS_CAP_TYPE_MON, &item);
if (ret != PQOS_RETVAL_OK) {
ret = PQOS_RETVAL_RESOURCE;
goto pqos_mon_init_exit;
}
ASSERT(item != NULL);
#ifdef __linux__
if (interface == PQOS_INTER_OS ||
interface == PQOS_INTER_OS_RESCTRL_MON)
ret = os_mon_init(cpu, cap);
if (ret != PQOS_RETVAL_OK)
return ret;
#endif
if (interface == PQOS_INTER_MSR)
ret = hw_mon_init(cpu, cap);
pqos_mon_init_exit:
return ret;
}
int
pqos_mon_fini(void)
{
int ret = PQOS_RETVAL_OK;
#ifdef __linux__
enum pqos_interface interface = _pqos_get_inter();
if (interface == PQOS_INTER_OS ||
interface == PQOS_INTER_OS_RESCTRL_MON)
ret = os_mon_fini();
if (interface == PQOS_INTER_MSR)
ret = hw_mon_fini();
#else
ret = hw_mon_fini();
#endif
return ret;
}
int
pqos_mon_poll_events(struct pqos_mon_data *group)
{
unsigned i;
int ret = PQOS_RETVAL_OK;
/** List of non virtual events */
const enum pqos_mon_event mon_event[] = {
PQOS_MON_EVENT_L3_OCCUP,
PQOS_MON_EVENT_LMEM_BW,
PQOS_MON_EVENT_TMEM_BW,
PQOS_PERF_EVENT_LLC_MISS,
PQOS_PERF_EVENT_LLC_REF,
(enum pqos_mon_event)PQOS_PERF_EVENT_CYCLES,
(enum pqos_mon_event)PQOS_PERF_EVENT_INSTRUCTIONS,
PQOS_PERF_EVENT_LLC_MISS_PCIE_READ,
PQOS_PERF_EVENT_LLC_MISS_PCIE_WRITE,
PQOS_PERF_EVENT_LLC_REF_PCIE_READ,
PQOS_PERF_EVENT_LLC_REF_PCIE_WRITE};
#ifdef __linux__
if (group->intl->resctrl.event != 0) {
ret = resctrl_lock_shared();
if (ret != PQOS_RETVAL_OK)
return ret;
}
#endif
for (i = 0; i < DIM(mon_event); i++) {
enum pqos_mon_event evt = mon_event[i];
/**
* poll hw event
*/
if (group->intl->hw.event & evt) {
ret = hw_mon_poll(group, evt);
if (ret != PQOS_RETVAL_OK)
goto poll_events_exit;
}
#ifdef __linux__
/**
* poll perf event
*/
if (group->intl->perf.event & evt) {
ret = perf_mon_poll(group, evt);
if (ret != PQOS_RETVAL_OK)
goto poll_events_exit;
}
/**
* poll resctrl event
*/
if (group->intl->resctrl.event & evt) {
ret = resctrl_mon_poll(group, evt);
if (ret != PQOS_RETVAL_OK)
goto poll_events_exit;
}
#endif
}
/**
* Calculate values of virtual events
*/
if (group->event & PQOS_MON_EVENT_RMEM_BW) {
const struct pqos_cap *cap = _pqos_get_cap();
const struct pqos_monitor *pmon;
uint64_t max_value = 0;
group->values.mbm_remote_delta = 0;
if (group->values.mbm_total_delta >
group->values.mbm_local_delta)
group->values.mbm_remote_delta =
group->values.mbm_total_delta -
group->values.mbm_local_delta;
ret = pqos_cap_get_event(cap, PQOS_MON_EVENT_RMEM_BW, &pmon);
if (ret == PQOS_RETVAL_OK)
max_value = 1LLU << pmon->counter_length;
if (max_value > 0 &&
group->values.mbm_local > group->values.mbm_total)
group->values.mbm_remote = max_value -
group->values.mbm_local +
group->values.mbm_total;
else
group->values.mbm_remote =
group->values.mbm_total - group->values.mbm_local;
}
if (group->event & PQOS_PERF_EVENT_IPC) {
if (group->values.ipc_unhalted_delta > 0)
group->values.ipc =
(double)group->values.ipc_retired_delta /
(double)group->values.ipc_unhalted_delta;
else
group->values.ipc = 0;
}
if (ret == PQOS_RETVAL_OK)
group->intl->valid_mbm_read = 1;
poll_events_exit:
#ifdef __linux__
if (group->intl->resctrl.event != 0)
resctrl_lock_release();
#endif
return ret;
}
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