perf mem: Clean up is_mem_loads_aux_event()

The aux_event can be retrieved from the perf_pmu now. Implement a
generic support.
Reviewed-by: Ian Rogers <irogers@google.com>
Tested-by: Ravi Bangoria <ravi.bangoria@amd.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: james.clark@arm.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/20240123185036.3461837-6-kan.liang@linux.intel.comSigned-off-by: Namhyung Kim <namhyung@kernel.org>

tools/perf/arch/x86/util/mem-events.c

 // SPDX-License-Identifier: GPL-2.0
-#include "util/pmu.h"
-#include "util/pmus.h"
-#include "util/env.h"
-#include "map_symbol.h"
-#include "mem-events.h"
 #include "linux/string.h"
-#include "env.h"
+#include "util/map_symbol.h"
+#include "util/mem-events.h"
+#include "mem-events.h"
+
 
 #define MEM_LOADS_AUX		0x8203
 
@@ -28,16 +26,3 @@ struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX] = {
 	E(NULL,		NULL,		NULL,	false,	0),
 	E("mem-ldst",	"%s//",		NULL,	false,	0),
 };
-
-bool is_mem_loads_aux_event(struct evsel *leader)
-{
-	struct perf_pmu *pmu = perf_pmus__find("cpu");
-
-	if (!pmu)
-		pmu = perf_pmus__find("cpu_core");
-
-	if (pmu && !perf_pmu__have_event(pmu, "mem-loads-aux"))
-		return false;
-
-	return leader->core.attr.config == MEM_LOADS_AUX;
-}

tools/perf/util/mem-events.c

@@ -107,9 +107,19 @@ static const char *perf_pmu__mem_events_name(int i, struct perf_pmu *pmu)
 	return NULL;
 }
 
-__weak bool is_mem_loads_aux_event(struct evsel *leader __maybe_unused)
+bool is_mem_loads_aux_event(struct evsel *leader)
 {
-	return false;
+	struct perf_pmu *pmu = leader->pmu;
+	struct perf_mem_event *e;
+
+	if (!pmu || !pmu->mem_events)
+		return false;
+
+	e = &pmu->mem_events[PERF_MEM_EVENTS__LOAD];
+	if (!e->aux_event)
+		return false;
+
+	return leader->core.attr.config == e->aux_event;
 }
 
 int perf_pmu__mem_events_parse(struct perf_pmu *pmu, const char *str)