perf stat: Make cputype filter generic

Rather than limit the --cputype argument for "perf list" and "perf
stat" to hybrid PMUs of just cpu_atom and cpu_core, allow any PMU.

Note, that if cpu_atom isn't mounted but a filter of cpu_atom is
requested, then this will now fail. As such a filter would never
succeed, no events can come from that unmounted PMU, then this
behavior could never have been useful and failing is clearer.

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Florian Fischer <florian.fischer@muhq.space>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kang Minchul <tegongkang@gmail.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Link: https://lore.kernel.org/r/20230502223851.2234828-31-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 24 insertions, 1 deletions

diff --git a/tools/perf/util/pmus.c b/tools/perf/util/pmus.c
index 7f3b93c4d229..140e11f00b29 100644
--- a/tools/perf/util/pmus.c
+++ b/tools/perf/util/pmus.c
@@ -1,5 +1,28 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <linux/list.h>
-#include <pmus.h>
+#include <string.h>
+#include "pmus.h"
+#include "pmu.h"
 
 LIST_HEAD(pmus);
+
+const struct perf_pmu *perf_pmus__pmu_for_pmu_filter(const char *str)
+{
+	struct perf_pmu *pmu = NULL;
+
+	while ((pmu = perf_pmu__scan(pmu)) != NULL) {
+		if (!strcmp(pmu->name, str))
+			return pmu;
+		/* Ignore "uncore_" prefix. */
+		if (!strncmp(pmu->name, "uncore_", 7)) {
+			if (!strcmp(pmu->name + 7, str))
+				return pmu;
+		}
+		/* Ignore "cpu_" prefix on Intel hybrid PMUs. */
+		if (!strncmp(pmu->name, "cpu_", 4)) {
+			if (!strcmp(pmu->name + 4, str))
+				return pmu;
+		}
+	}
+	return NULL;
+}