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Message-Id: <20201106094853.21082-10-leo.yan@linaro.org>
Date: Fri, 6 Nov 2020 17:48:53 +0800
From: Leo Yan <leo.yan@...aro.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
Jiri Olsa <jolsa@...hat.com>, Ian Rogers <irogers@...gle.com>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Namhyung Kim <namhyung@...nel.org>,
John Garry <john.garry@...wei.com>,
Will Deacon <will@...nel.org>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Adrian Hunter <adrian.hunter@...el.com>,
Andi Kleen <ak@...ux.intel.com>,
Kemeng Shi <shikemeng@...wei.com>,
Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
Al Grant <Al.Grant@....com>, James Clark <james.clark@....com>,
Wei Li <liwei391@...wei.com>,
Andre Przywara <andre.przywara@....com>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc: Leo Yan <leo.yan@...aro.org>
Subject: [PATCH v4 9/9] 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: Leo Yan <leo.yan@...aro.org>
---
tools/perf/arch/arm64/util/Build | 2 +-
tools/perf/arch/arm64/util/mem-events.c | 37 +++++++++++++++++++++++++
2 files changed, 38 insertions(+), 1 deletion(-)
create mode 100644 tools/perf/arch/arm64/util/mem-events.c
diff --git a/tools/perf/arch/arm64/util/Build b/tools/perf/arch/arm64/util/Build
index 8d2b9bcfffca..ead2f2275eee 100644
--- a/tools/perf/arch/arm64/util/Build
+++ b/tools/perf/arch/arm64/util/Build
@@ -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
diff --git a/tools/perf/arch/arm64/util/mem-events.c b/tools/perf/arch/arm64/util/mem-events.c
new file mode 100644
index 000000000000..2a2497372671
--- /dev/null
+++ b/tools/perf/arch/arm64/util/mem-events.c
@@ -0,0 +1,37 @@
+// 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;
+}
--
2.17.1
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