[PATCH v3 2/8] perf sched stats: Add schedstat v16 support

Swapnil Sapkal
2025-03-11T12:04:02Z

/proc/schedstat file output is standardized with version number.
Add support to record and raw dump v16 version layout.

Co-developed-by: Ravi Bangoria <ravi.bangoria@amd.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Tested-by: James Clark <james.clark@linaro.org>
Signed-off-by: Swapnil Sapkal <swapnil.sapkal@amd.com>
---
tools/lib/perf/Makefile | 2 +-
tools/lib/perf/include/perf/event.h | 14 ++++++
tools/lib/perf/include/perf/schedstat-v16.h | 52 +++++++++++++++++++++
tools/perf/util/event.c | 6 +++
tools/perf/util/synthetic-events.c | 6 +++
5 files changed, 79 insertions(+), 1 deletion(-)
create mode 100644 tools/lib/perf/include/perf/schedstat-v16.h

diff --git a/tools/lib/perf/Makefile b/tools/lib/perf/Makefile
index 4b60804aa0b6..d0506a13a97f 100644
--- a/tools/lib/perf/Makefile
+++ b/tools/lib/perf/Makefile
@@ -174,7 +174,7 @@ install_lib: libs
$(call do_install_mkdir,$(libdir_SQ)); \
cp -fpR $(LIBPERF_ALL) $(DESTDIR)$(libdir_SQ)

-HDRS := bpf_perf.h core.h cpumap.h threadmap.h evlist.h evsel.h event.h mmap.h schedstat-v15.h
+HDRS := bpf_perf.h core.h cpumap.h threadmap.h evlist.h evsel.h event.h mmap.h schedstat-v15.h schedstat-v16.h
INTERNAL_HDRS := cpumap.h evlist.h evsel.h lib.h mmap.h rc_check.h threadmap.h xyarray.h

INSTALL_HDRS_PFX := $(DESTDIR)$(prefix)/include/perf
diff --git a/tools/lib/perf/include/perf/event.h b/tools/lib/perf/include/perf/event.h
index 189106874063..8ef70799e070 100644
--- a/tools/lib/perf/include/perf/event.h
+++ b/tools/lib/perf/include/perf/event.h
@@ -463,11 +463,18 @@ struct perf_record_schedstat_cpu_v15 {
#undef CPU_FIELD
};

+struct perf_record_schedstat_cpu_v16 {
+#define CPU_FIELD(_type, _name, _ver) _type _name
+#include "schedstat-v16.h"
+#undef CPU_FIELD
+};
+
struct perf_record_schedstat_cpu {
struct perf_event_header header;
__u64 timestamp;
union {
struct perf_record_schedstat_cpu_v15 v15;
+ struct perf_record_schedstat_cpu_v16 v16;
};
__u32 cpu;
__u16 version;
@@ -479,6 +486,12 @@ struct perf_record_schedstat_domain_v15 {
#undef DOMAIN_FIELD
};

+struct perf_record_schedstat_domain_v16 {
+#define DOMAIN_FIELD(_type, _name, _ver) _type _name
+#include "schedstat-v16.h"
+#undef DOMAIN_FIELD
+};
+
#define DOMAIN_NAME_LEN 16

struct perf_record_schedstat_domain {
@@ -490,6 +503,7 @@ struct perf_record_schedstat_domain {
char name[DOMAIN_NAME_LEN];
union {
struct perf_record_schedstat_domain_v15 v15;
+ struct perf_record_schedstat_domain_v16 v16;
};
__u16 nr_cpus;
__u8 cpu_mask[];
diff --git a/tools/lib/perf/include/perf/schedstat-v16.h b/tools/lib/perf/include/perf/schedstat-v16.h
new file mode 100644
index 000000000000..d6a4691b2fd5
--- /dev/null
+++ b/tools/lib/perf/include/perf/schedstat-v16.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifdef CPU_FIELD
+CPU_FIELD(__u32, yld_count, v16);
+CPU_FIELD(__u32, array_exp, v16);
+CPU_FIELD(__u32, sched_count, v16);
+CPU_FIELD(__u32, sched_goidle, v16);
+CPU_FIELD(__u32, ttwu_count, v16);
+CPU_FIELD(__u32, ttwu_local, v16);
+CPU_FIELD(__u64, rq_cpu_time, v16);
+CPU_FIELD(__u64, run_delay, v16);
+CPU_FIELD(__u64, pcount, v16);
+#endif
+
+#ifdef DOMAIN_FIELD
+DOMAIN_FIELD(__u32, busy_lb_count, v16);
+DOMAIN_FIELD(__u32, busy_lb_balanced, v16);
+DOMAIN_FIELD(__u32, busy_lb_failed, v16);
+DOMAIN_FIELD(__u32, busy_lb_imbalance, v16);
+DOMAIN_FIELD(__u32, busy_lb_gained, v16);
+DOMAIN_FIELD(__u32, busy_lb_hot_gained, v16);
+DOMAIN_FIELD(__u32, busy_lb_nobusyq, v16);
+DOMAIN_FIELD(__u32, busy_lb_nobusyg, v16);
+DOMAIN_FIELD(__u32, idle_lb_count, v16);
+DOMAIN_FIELD(__u32, idle_lb_balanced, v16);
+DOMAIN_FIELD(__u32, idle_lb_failed, v16);
+DOMAIN_FIELD(__u32, idle_lb_imbalance, v16);
+DOMAIN_FIELD(__u32, idle_lb_gained, v16);
+DOMAIN_FIELD(__u32, idle_lb_hot_gained, v16);
+DOMAIN_FIELD(__u32, idle_lb_nobusyq, v16);
+DOMAIN_FIELD(__u32, idle_lb_nobusyg, v16);
+DOMAIN_FIELD(__u32, newidle_lb_count, v16);
+DOMAIN_FIELD(__u32, newidle_lb_balanced, v16);
+DOMAIN_FIELD(__u32, newidle_lb_failed, v16);
+DOMAIN_FIELD(__u32, newidle_lb_imbalance, v16);
+DOMAIN_FIELD(__u32, newidle_lb_gained, v16);
+DOMAIN_FIELD(__u32, newidle_lb_hot_gained, v16);
+DOMAIN_FIELD(__u32, newidle_lb_nobusyq, v16);
+DOMAIN_FIELD(__u32, newidle_lb_nobusyg, v16);
+DOMAIN_FIELD(__u32, alb_count, v16);
+DOMAIN_FIELD(__u32, alb_failed, v16);
+DOMAIN_FIELD(__u32, alb_pushed, v16);
+DOMAIN_FIELD(__u32, sbe_count, v16);
+DOMAIN_FIELD(__u32, sbe_balanced, v16);
+DOMAIN_FIELD(__u32, sbe_pushed, v16);
+DOMAIN_FIELD(__u32, sbf_count, v16);
+DOMAIN_FIELD(__u32, sbf_balanced, v16);
+DOMAIN_FIELD(__u32, sbf_pushed, v16);
+DOMAIN_FIELD(__u32, ttwu_wake_remote, v16);
+DOMAIN_FIELD(__u32, ttwu_move_affine, v16);
+DOMAIN_FIELD(__u32, ttwu_move_balance, v16);
+#endif
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 0f863d38abe2..64f81e7b7f70 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -566,6 +566,9 @@ size_t perf_event__fprintf_schedstat_cpu(union perf_event *event, FILE *fp)
if (version == 15) {
#include <perf/schedstat-v15.h>
return size;
+ } else if (version == 16) {
+#include <perf/schedstat-v16.h>
+ return size;
}
#undef CPU_FIELD

@@ -641,6 +644,9 @@ size_t perf_event__fprintf_schedstat_domain(union perf_event *event, FILE *fp)
if (version == 15) {
#include <perf/schedstat-v15.h>
return size;
+ } else if (version == 16) {
+#include <perf/schedstat-v16.h>
+ return size;
}
#undef DOMAIN_FIELD

diff --git a/tools/perf/util/synthetic-events.c b/tools/perf/util/synthetic-events.c
index f928f07bea15..e9dc1e14cfea 100644
--- a/tools/perf/util/synthetic-events.c
+++ b/tools/perf/util/synthetic-events.c
@@ -2549,6 +2549,8 @@ static union perf_event *__synthesize_schedstat_cpu(struct io *io, __u16 version

if (version == 15) {
#include <perf/schedstat-v15.h>
+ } else if (version == 16) {
+#include <perf/schedstat-v16.h>
}
#undef CPU_FIELD

@@ -2661,6 +2663,8 @@ static union perf_event *__synthesize_schedstat_domain(struct io *io, __u16 vers

if (version == 15) {
#include <perf/schedstat-v15.h>
+ } else if (version == 16) {
+#include <perf/schedstat-v16.h>
}
#undef DOMAIN_FIELD

@@ -2703,6 +2707,8 @@ int perf_event__synthesize_schedstat(const struct perf_tool *tool,

if (!strcmp(line, "version 15\n")) {
version = 15;
+ } else if (!strcmp(line, "version 16\n")) {
+ version = 16;
} else {
pr_err("Unsupported %s version: %s", path, line + 8);
goto out_free_line;
--
2.43.0