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/*
* virperf.h: methods for managing perf events
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "virenum.h"
/* Some Intel processor families introduced some RDT (Resource Director
* Technology) features to monitor or control shared resource based on
* the perf framework in the linux kernel. */
typedef enum {
VIR_PERF_EVENT_CMT, /* Cache Monitoring Technology */
VIR_PERF_EVENT_MBMT, /* Memory Bandwidth Monitoring Total */
VIR_PERF_EVENT_MBML, /* Memory Bandwidth Monitor Limit for controller */
VIR_PERF_EVENT_CPU_CYCLES, /* Count of CPU Cycles (total/elapsed) */
VIR_PERF_EVENT_INSTRUCTIONS, /* Count of instructions for application */
VIR_PERF_EVENT_CACHE_REFERENCES, /* Cache hits by applications */
VIR_PERF_EVENT_CACHE_MISSES, /* Cache misses by applications */
VIR_PERF_EVENT_BRANCH_INSTRUCTIONS, /* Count of branch instructions
for applications */
VIR_PERF_EVENT_BRANCH_MISSES, /* Count of branch misses for applications */
VIR_PERF_EVENT_BUS_CYCLES, /* Count of bus cycles for applications */
VIR_PERF_EVENT_STALLED_CYCLES_FRONTEND, /* Count of stalled cpu cycles in
the frontend of the instruction
processor pipeline */
VIR_PERF_EVENT_STALLED_CYCLES_BACKEND, /* Count of stalled cpu cycles in
the backend of the instruction
processor pipeline */
VIR_PERF_EVENT_REF_CPU_CYCLES, /* Count of ref cpu cycles */
VIR_PERF_EVENT_CPU_CLOCK, /* Count of cpu clock time */
VIR_PERF_EVENT_TASK_CLOCK, /* Count of task clock time */
VIR_PERF_EVENT_PAGE_FAULTS, /* Count of total page faults */
VIR_PERF_EVENT_CONTEXT_SWITCHES, /* Count of context switches */
VIR_PERF_EVENT_CPU_MIGRATIONS, /* Count of cpu migrations */
VIR_PERF_EVENT_PAGE_FAULTS_MIN, /* Count of minor page faults */
VIR_PERF_EVENT_PAGE_FAULTS_MAJ, /* Count of major page faults */
VIR_PERF_EVENT_ALIGNMENT_FAULTS, /* Count of alignment faults */
VIR_PERF_EVENT_EMULATION_FAULTS, /* Count of emulation faults */
VIR_PERF_EVENT_LAST
} virPerfEventType;
VIR_ENUM_DECL(virPerfEvent);
struct _virPerf;
typedef struct _virPerf virPerf;
virPerf *virPerfNew(void);
void virPerfFree(virPerf *perf);
int virPerfEventEnable(virPerf *perf,
virPerfEventType type,
pid_t pid);
int virPerfEventDisable(virPerf *perf,
virPerfEventType type);
bool virPerfEventIsEnabled(virPerf *perf,
virPerfEventType type);
int virPerfReadEvent(virPerf *perf,
virPerfEventType type,
uint64_t *value);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(virPerf, virPerfFree);
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