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-rw-r--r--tools/perf/util/topdown.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/tools/perf/util/topdown.c b/tools/perf/util/topdown.c
new file mode 100644
index 000000000..109084155
--- /dev/null
+++ b/tools/perf/util/topdown.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <stdio.h>
+#include "pmu.h"
+#include "pmu-hybrid.h"
+#include "topdown.h"
+
+int topdown_filter_events(const char **attr, char **str, bool use_group,
+ const char *pmu_name)
+{
+ int off = 0;
+ int i;
+ int len = 0;
+ char *s;
+ bool is_hybrid = perf_pmu__is_hybrid(pmu_name);
+
+ for (i = 0; attr[i]; i++) {
+ if (pmu_have_event(pmu_name, attr[i])) {
+ if (is_hybrid)
+ len += strlen(attr[i]) + strlen(pmu_name) + 3;
+ else
+ len += strlen(attr[i]) + 1;
+ attr[i - off] = attr[i];
+ } else
+ off++;
+ }
+ attr[i - off] = NULL;
+
+ *str = malloc(len + 1 + 2);
+ if (!*str)
+ return -1;
+ s = *str;
+ if (i - off == 0) {
+ *s = 0;
+ return 0;
+ }
+ if (use_group)
+ *s++ = '{';
+ for (i = 0; attr[i]; i++) {
+ if (!is_hybrid)
+ strcpy(s, attr[i]);
+ else
+ sprintf(s, "%s/%s/", pmu_name, attr[i]);
+ s += strlen(s);
+ *s++ = ',';
+ }
+ if (use_group) {
+ s[-1] = '}';
+ *s = 0;
+ } else
+ s[-1] = 0;
+ return 0;
+}
+
+__weak bool arch_topdown_check_group(bool *warn)
+{
+ *warn = false;
+ return false;
+}
+
+__weak void arch_topdown_group_warn(void)
+{
+}
+
+__weak bool arch_topdown_sample_read(struct evsel *leader __maybe_unused)
+{
+ return false;
+}
+
+__weak const char *arch_get_topdown_pmu_name(struct evlist *evlist
+ __maybe_unused,
+ bool warn __maybe_unused)
+{
+ return "cpu";
+}