linux-stable/tools/perf/util/mem-events.h
Leo Yan e843dec53a perf mem: Add statistics for peer snooping
Since the flag PERF_MEM_SNOOPX_PEER is added to support cache snooping
from peer cache line, it can come from a peer core, a peer cluster, or
a remote NUMA node.

This patch adds statistics for the flag PERF_MEM_SNOOPX_PEER.  Note, we
take PERF_MEM_SNOOPX_PEER as an affiliated info, it needs to cooperate
with cache level statistics.  Therefore, we account the load operations
for both the cache level's metrics (e.g. ld_l2hit, ld_llchit, etc.) and
peer related metrics when flag PERF_MEM_SNOOPX_PEER is set.

So three new metrics are introduced: 'lcl_peer' is for local cache
access, the metric 'rmt_peer' is for remote access (includes remote DRAM
and any caches in remote node), and the metric 'tot_peer' is accounting
the sum value of 'lcl_peer' and 'rmt_peer'.

Reviewed-by: Ali Saidi <alisaidi@amazon.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Ali Saidi <alisaidi@amazon.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Gustavo A. R. Silva <gustavoars@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Like Xu <likexu@tencent.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Timothy Hayes <timothy.hayes@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20220811062451.435810-5-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-11 19:12:12 -03:00

97 lines
3.7 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __PERF_MEM_EVENTS_H
#define __PERF_MEM_EVENTS_H
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <linux/types.h>
#include <linux/refcount.h>
#include <linux/perf_event.h>
#include "stat.h"
#include "evsel.h"
struct perf_mem_event {
bool record;
bool supported;
const char *tag;
const char *name;
const char *sysfs_name;
};
struct mem_info {
struct addr_map_symbol iaddr;
struct addr_map_symbol daddr;
union perf_mem_data_src data_src;
refcount_t refcnt;
};
enum {
PERF_MEM_EVENTS__LOAD,
PERF_MEM_EVENTS__STORE,
PERF_MEM_EVENTS__LOAD_STORE,
PERF_MEM_EVENTS__MAX,
};
extern unsigned int perf_mem_events__loads_ldlat;
int perf_mem_events__parse(const char *str);
int perf_mem_events__init(void);
char *perf_mem_events__name(int i, char *pmu_name);
struct perf_mem_event *perf_mem_events__ptr(int i);
bool is_mem_loads_aux_event(struct evsel *leader);
void perf_mem_events__list(void);
int perf_mem_events__record_args(const char **rec_argv, int *argv_nr,
char **rec_tmp, int *tmp_nr);
int perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info);
int perf_mem__lvl_scnprintf(char *out, size_t sz, struct mem_info *mem_info);
int perf_mem__snp_scnprintf(char *out, size_t sz, struct mem_info *mem_info);
int perf_mem__lck_scnprintf(char *out, size_t sz, struct mem_info *mem_info);
int perf_mem__blk_scnprintf(char *out, size_t sz, struct mem_info *mem_info);
int perf_script__meminfo_scnprintf(char *bf, size_t size, struct mem_info *mem_info);
struct c2c_stats {
u32 nr_entries;
u32 locks; /* count of 'lock' transactions */
u32 store; /* count of all stores in trace */
u32 st_uncache; /* stores to uncacheable address */
u32 st_noadrs; /* cacheable store with no address */
u32 st_l1hit; /* count of stores that hit L1D */
u32 st_l1miss; /* count of stores that miss L1D */
u32 st_na; /* count of stores with memory level is not available */
u32 load; /* count of all loads in trace */
u32 ld_excl; /* exclusive loads, rmt/lcl DRAM - snp none/miss */
u32 ld_shared; /* shared loads, rmt/lcl DRAM - snp hit */
u32 ld_uncache; /* loads to uncacheable address */
u32 ld_io; /* loads to io address */
u32 ld_miss; /* loads miss */
u32 ld_noadrs; /* cacheable load with no address */
u32 ld_fbhit; /* count of loads hitting Fill Buffer */
u32 ld_l1hit; /* count of loads that hit L1D */
u32 ld_l2hit; /* count of loads that hit L2D */
u32 ld_llchit; /* count of loads that hit LLC */
u32 lcl_hitm; /* count of loads with local HITM */
u32 rmt_hitm; /* count of loads with remote HITM */
u32 tot_hitm; /* count of loads with local and remote HITM */
u32 lcl_peer; /* count of loads with local peer cache */
u32 rmt_peer; /* count of loads with remote peer cache */
u32 tot_peer; /* count of loads with local and remote peer cache */
u32 rmt_hit; /* count of loads with remote hit clean; */
u32 lcl_dram; /* count of loads miss to local DRAM */
u32 rmt_dram; /* count of loads miss to remote DRAM */
u32 blk_data; /* count of loads blocked by data */
u32 blk_addr; /* count of loads blocked by address conflict */
u32 nomap; /* count of load/stores with no phys addrs */
u32 noparse; /* count of unparsable data sources */
};
struct hist_entry;
int c2c_decode_stats(struct c2c_stats *stats, struct mem_info *mi);
void c2c_add_stats(struct c2c_stats *stats, struct c2c_stats *add);
#endif /* __PERF_MEM_EVENTS_H */