3 files changed, 12 insertions, 0 deletions
diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
index 00dcde35e0d3..c1da20b868db 100644
--- a/tools/perf/util/expr.c
+++ b/tools/perf/util/expr.c
@@ -19,6 +19,7 @@
 #include <linux/zalloc.h>
 #include <ctype.h>
 #include <math.h>
+#include "pmu.h"
 
 #ifdef PARSER_DEBUG
 extern int expr_debug;
@@ -448,6 +449,10 @@ double expr__get_literal(const char *literal, const struct expr_scanner_ctx *ctx
 		result = topology->core_cpus_lists;
 		goto out;
 	}
+	if (!strcmp("#slots", literal)) {
+		result = perf_pmu__cpu_slots_per_cycle();
+		goto out;
+	}
 
 	pr_err("Unrecognized literal '%s'", literal);
 out:
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 2bdeb89352e7..cbb4fbf124bd 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -19,6 +19,7 @@
 #include <regex.h>
 #include <perf/cpumap.h>
 #include <fnmatch.h>
+#include <math.h>
 #include "debug.h"
 #include "evsel.h"
 #include "pmu.h"
@@ -1993,3 +1994,8 @@ int perf_pmu__cpus_match(struct perf_pmu *pmu, struct perf_cpu_map *cpus,
 	*ucpus_ptr = unmatched_cpus;
 	return 0;
 }
+
+double __weak perf_pmu__cpu_slots_per_cycle(void)
+{
+	return NAN;
+}
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 69ca0004f94f..fd414ba1d776 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -259,4 +259,5 @@ int perf_pmu__cpus_match(struct perf_pmu *pmu, struct perf_cpu_map *cpus,
 
 char *pmu_find_real_name(const char *name);
 char *pmu_find_alias_name(const char *name);
+double perf_pmu__cpu_slots_per_cycle(void);
 #endif /* __PMU_H */