perf mem: Add mem_events into the supported perf_pmu

With the mem_events, perf doesn't need to read sysfs for each PMU to
find the mem-events-supported PMU. The patch also makes it possible to
clean up the related __weak functions later.

The patch is only to add the mem_events into the perf_pmu for all ARCHs.
It will be used in the later cleanup patches.

Reviewed-by: Ian Rogers <irogers@google.com>
Reviewed-by: Kajol Jain <kjain@linux.ibm.com>
Tested-by: Ravi Bangoria <ravi.bangoria@amd.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Kajol Jain <kjain@linux.ibm.com>
Suggested-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: will@kernel.org
Cc: mike.leach@linaro.org
Cc: renyu.zj@linux.alibaba.com
Cc: yuhaixin.yhx@linux.alibaba.com
Cc: tmricht@linux.ibm.com
Cc: atrajeev@linux.vnet.ibm.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: john.g.garry@oracle.com
Link: https://lore.kernel.org/r/20240123185036.3461837-2-kan.liang@linux.intel.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

6 files changed, 32 insertions, 5 deletions

diff --git a/tools/perf/arch/arm/util/pmu.c b/tools/perf/arch/arm/util/pmu.c
index 7f3af3b97f3b..8b7cb68ba1a8 100644
--- a/tools/perf/arch/arm/util/pmu.c
+++ b/tools/perf/arch/arm/util/pmu.c
@@ -13,6 +13,7 @@
 #include "hisi-ptt.h"
 #include "../../../util/pmu.h"
 #include "../../../util/cs-etm.h"
+#include "../../arm64/util/mem-events.h"
 
 void perf_pmu__arch_init(struct perf_pmu *pmu __maybe_unused)
 {
@@ -26,6 +27,8 @@ void perf_pmu__arch_init(struct perf_pmu *pmu __maybe_unused)
 		pmu->selectable = true;
 		pmu->is_uncore = false;
 		pmu->perf_event_attr_init_default = arm_spe_pmu_default_config;
+		if (!strcmp(pmu->name, "arm_spe_0"))
+			pmu->mem_events = perf_mem_events_arm;
 	} else if (strstarts(pmu->name, HISI_PTT_PMU_NAME)) {
 		pmu->selectable = true;
 #endif
diff --git a/tools/perf/arch/arm64/util/mem-events.c b/tools/perf/arch/arm64/util/mem-events.c
index 3bcc5c7035c2..edf8207f7812 100644
--- a/tools/perf/arch/arm64/util/mem-events.c
+++ b/tools/perf/arch/arm64/util/mem-events.c
@@ -1,10 +1,11 @@
 // SPDX-License-Identifier: GPL-2.0
-#include "map_symbol.h"
+#include "util/map_symbol.h"
+#include "util/mem-events.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] = {
+struct perf_mem_event perf_mem_events_arm[PERF_MEM_EVENTS__MAX] = {
 	E("spe-load",	"arm_spe_0/ts_enable=1,pa_enable=1,load_filter=1,store_filter=0,min_latency=%u/",	"arm_spe_0"),
 	E("spe-store",	"arm_spe_0/ts_enable=1,pa_enable=1,load_filter=0,store_filter=1/",			"arm_spe_0"),
 	E("spe-ldst",	"arm_spe_0/ts_enable=1,pa_enable=1,load_filter=1,store_filter=1,min_latency=%u/",	"arm_spe_0"),
@@ -17,7 +18,7 @@ struct perf_mem_event *perf_mem_events__ptr(int i)
 	if (i >= PERF_MEM_EVENTS__MAX)
 		return NULL;
 
-	return &perf_mem_events[i];
+	return &perf_mem_events_arm[i];
 }
 
 const char *perf_mem_events__name(int i, const char *pmu_name __maybe_unused)
diff --git a/tools/perf/arch/arm64/util/mem-events.h b/tools/perf/arch/arm64/util/mem-events.h
new file mode 100644
index 000000000000..5fc50be4be38
--- /dev/null
+++ b/tools/perf/arch/arm64/util/mem-events.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ARM64_MEM_EVENTS_H
+#define _ARM64_MEM_EVENTS_H
+
+extern struct perf_mem_event perf_mem_events_arm[PERF_MEM_EVENTS__MAX];
+
+#endif /* _ARM64_MEM_EVENTS_H */
diff --git a/tools/perf/arch/x86/util/mem-events.c b/tools/perf/arch/x86/util/mem-events.c
index 191b372f9a2d..2b81d229982c 100644
--- a/tools/perf/arch/x86/util/mem-events.c
+++ b/tools/perf/arch/x86/util/mem-events.c
@@ -16,13 +16,13 @@ static char mem_stores_name[100];
 
 #define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
 
-static struct perf_mem_event perf_mem_events_intel[PERF_MEM_EVENTS__MAX] = {
+struct perf_mem_event perf_mem_events_intel[PERF_MEM_EVENTS__MAX] = {
 	E("ldlat-loads",	"%s/mem-loads,ldlat=%u/P",	"%s/events/mem-loads"),
 	E("ldlat-stores",	"%s/mem-stores/P",		"%s/events/mem-stores"),
 	E(NULL,			NULL,				NULL),
 };
 
-static struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX] = {
+struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX] = {
 	E(NULL,		NULL,		NULL),
 	E(NULL,		NULL,		NULL),
 	E("mem-ldst",	"ibs_op//",	"ibs_op"),
diff --git a/tools/perf/arch/x86/util/mem-events.h b/tools/perf/arch/x86/util/mem-events.h
new file mode 100644
index 000000000000..3959e427f482
--- /dev/null
+++ b/tools/perf/arch/x86/util/mem-events.h
@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _X86_MEM_EVENTS_H
+#define _X86_MEM_EVENTS_H
+
+extern struct perf_mem_event perf_mem_events_intel[PERF_MEM_EVENTS__MAX];
+
+extern struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX];
+
+#endif /* _X86_MEM_EVENTS_H */
diff --git a/tools/perf/arch/x86/util/pmu.c b/tools/perf/arch/x86/util/pmu.c
index 469555ae9b3c..cd22e80e5657 100644
--- a/tools/perf/arch/x86/util/pmu.c
+++ b/tools/perf/arch/x86/util/pmu.c
@@ -15,6 +15,7 @@
 #include "../../../util/pmu.h"
 #include "../../../util/fncache.h"
 #include "../../../util/pmus.h"
+#include "mem-events.h"
 #include "env.h"
 
 void perf_pmu__arch_init(struct perf_pmu *pmu __maybe_unused)
@@ -30,6 +31,12 @@ void perf_pmu__arch_init(struct perf_pmu *pmu __maybe_unused)
 		pmu->selectable = true;
 	}
 #endif
+
+	if (x86__is_amd_cpu()) {
+		if (!strcmp(pmu->name, "ibs_op"))
+			pmu->mem_events = perf_mem_events_amd;
+	} else if (pmu->is_core)
+		pmu->mem_events = perf_mem_events_intel;
 }
 
 int perf_pmus__num_mem_pmus(void)