Commit 40714c58 authored by Leo Yan's avatar Leo Yan Committed by Arnaldo Carvalho de Melo
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perf mem: Support ARM SPE events 



This patch adds ARM SPE events for perf memory profiling:

  'spe-load': event for only recording memory load ops;
  'spe-store': event for only recording memory store ops;
  'spe-ldst': event for recording memory load and store ops.

Signed-off-by: default avatarLeo Yan <leo.yan@linaro.org>
Acked-by: default avatarJiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20201106094853.21082-10-leo.yan@linaro.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent c825f788

tools/perf/arch/arm64/util/Build

+1 −1
Original line number Diff line number Diff line
@@ -10,4 +10,4 @@ perf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o 
perf-$(CONFIG_AUXTRACE) += ../../arm/util/pmu.o \

			      ../../arm/util/auxtrace.o \

			      ../../arm/util/cs-etm.o \

			      arm-spe.o
 
			      arm-spe.o mem-events.o

tools/perf/arch/arm64/util/mem-events.c

0 → 100644
+37 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

#include "map_symbol.h"

#include "mem-events.h"



#define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }



static struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {

	E("spe-load",	"arm_spe_0/ts_enable=1,load_filter=1,store_filter=0,min_latency=%u/",	"arm_spe_0"),

	E("spe-store",	"arm_spe_0/ts_enable=1,load_filter=0,store_filter=1/",			"arm_spe_0"),

	E("spe-ldst",	"arm_spe_0/ts_enable=1,load_filter=1,store_filter=1,min_latency=%u/",	"arm_spe_0"),

};



static char mem_ev_name[100];



struct perf_mem_event *perf_mem_events__ptr(int i)

{

	if (i >= PERF_MEM_EVENTS__MAX)

		return NULL;



	return &perf_mem_events[i];

}



char *perf_mem_events__name(int i)

{

	struct perf_mem_event *e = perf_mem_events__ptr(i);



	if (i >= PERF_MEM_EVENTS__MAX)

		return NULL;



	if (i == PERF_MEM_EVENTS__LOAD || i == PERF_MEM_EVENTS__LOAD_STORE)

		scnprintf(mem_ev_name, sizeof(mem_ev_name),

			  e->name, perf_mem_events__loads_ldlat);

	else /* PERF_MEM_EVENTS__STORE */

		scnprintf(mem_ev_name, sizeof(mem_ev_name), e->name);



	return mem_ev_name;

}