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/*
* Copyright (c) 2018 Intel Corporation. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* BSD license below:
*
* 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _OFI_PERF_H_
#define _OFI_PERF_H_
#include "config.h"
#include <assert.h>
#include <string.h>
#include <ofi_osd.h>
#include <rdma/providers/fi_prov.h>
#ifdef __cplusplus
extern "C" {
#endif
enum ofi_perf_domain {
OFI_PMU_CPU,
OFI_PMU_CACHE,
OFI_PMU_OS,
OFI_PMU_NIC
};
enum {
OFI_PMC_FLAG_READ = 1 << 0,
OFI_PMC_FLAG_WRITE = 1 << 1,
OFI_PMC_FLAG_MISS = 1 << 2,
};
enum {
OFI_PMC_CPU_CYCLES,
OFI_PMC_CPU_INSTR,
};
enum {
OFI_PMC_CACHE_L1_DATA,
OFI_PMC_CACHE_L1_INSTR,
OFI_PMC_CACHE_TLB_DATA,
OFI_PMC_CACHE_TLB_INSTR,
};
enum {
OFI_PMC_OS_PAGE_FAULT
};
/* NIC counters TBD */
struct ofi_perf_data {
uint64_t start;
uint64_t sum;
uint64_t events;
};
void ofi_perf_init(void);
extern enum ofi_perf_domain perf_domain;
extern uint32_t perf_cntr;
extern uint32_t perf_flags;
/*
* Performance management unit:
*
* Access to a PMU is platform specific. If an osd.h file provides methods
* to access a PMU, it should define HAVE_LINUX_PERF_RDPMC and provide
* implementations for the following functions. Platforms that do not
* support PMUs will default to no-op definitions.
*/
#if HAVE_LINUX_PERF_RDPMC
struct ofi_perf_ctx;
int ofi_pmu_open(struct ofi_perf_ctx **ctx,
enum ofi_perf_domain domain, uint32_t cntr_id, uint32_t flags);
uint64_t ofi_pmu_read(struct ofi_perf_ctx *ctx);
void ofi_pmu_close(struct ofi_perf_ctx *ctx);
#else /* HAVE_LINUX_PERF_RDPMC */
struct ofi_perf_ctx {
int dummy;
};
static inline int ofi_pmu_open(struct ofi_perf_ctx **ctx,
enum ofi_perf_domain domain, uint32_t cntr_id,
uint32_t flags)
{
*ctx = NULL;
return 0;
}
static inline uint64_t ofi_pmu_read(struct ofi_perf_ctx *ctx)
{
return 0;
}
static inline void ofi_pmu_close(struct ofi_perf_ctx *ctx)
{
}
#endif /* HAVE_LINUX_PERF_RDPMC */
static inline void ofi_perf_reset(struct ofi_perf_data *data)
{
memset(data, 0, sizeof *data);
}
static inline void ofi_perf_start(struct ofi_perf_ctx *ctx,
struct ofi_perf_data *data)
{
data->start = ofi_pmu_read(ctx);
}
static inline void ofi_perf_end(struct ofi_perf_ctx *ctx,
struct ofi_perf_data *data)
{
data->sum += ofi_pmu_read(ctx) - data->start;
data->events++;
}
struct ofi_perfset {
const struct fi_provider *prov;
size_t size;
struct ofi_perf_ctx *ctx;
struct ofi_perf_data *data;
};
int ofi_perfset_create(const struct fi_provider *prov,
struct ofi_perfset *set, size_t size,
enum ofi_perf_domain domain, uint32_t cntr_id,
uint32_t flags);
void ofi_perfset_close(struct ofi_perfset *set);
void ofi_perfset_log(struct ofi_perfset *set, const char **names);
static inline void ofi_perfset_start(struct ofi_perfset *set, size_t index)
{
assert(index < set->size);
ofi_perf_start(set->ctx, &set->data[index]);
}
static inline void ofi_perfset_end(struct ofi_perfset *set, size_t index)
{
assert(index < set->size);
ofi_perf_end(set->ctx, &set->data[index]);
}
#ifdef __cplusplus
}
#endif
#endif /* _OFI_PERF_H_ */
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