[PATCH v3 3/8] perf sched stats: Add schedstat v17 support

Swapnil Sapkal
2025-03-11T12:04:23Z

/proc/schedstat file output is standardized with version number.
Add support to record and raw dump v17 version layout.

Co-developed-by: Ravi Bangoria <ravi.bangoria@amd.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
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-v17.h | 61 +++++++++++++++++++++
tools/perf/util/event.c | 6 ++
tools/perf/util/synthetic-events.c | 15 +++++
5 files changed, 97 insertions(+), 1 deletion(-)
create mode 100644 tools/lib/perf/include/perf/schedstat-v17.h

diff --git a/tools/lib/perf/Makefile b/tools/lib/perf/Makefile
index d0506a13a97f..30712ce8b6b1 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 schedstat-v16.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 schedstat-v17.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 8ef70799e070..0d1983ad9a41 100644
--- a/tools/lib/perf/include/perf/event.h
+++ b/tools/lib/perf/include/perf/event.h
@@ -469,12 +469,19 @@ struct perf_record_schedstat_cpu_v16 {
#undef CPU_FIELD
};

+struct perf_record_schedstat_cpu_v17 {
+#define CPU_FIELD(_type, _name, _ver) _type _name
+#include "schedstat-v17.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;
+ struct perf_record_schedstat_cpu_v17 v17;
};
__u32 cpu;
__u16 version;
@@ -492,6 +499,12 @@ struct perf_record_schedstat_domain_v16 {
#undef DOMAIN_FIELD
};

+struct perf_record_schedstat_domain_v17 {
+#define DOMAIN_FIELD(_type, _name, _ver) _type _name
+#include "schedstat-v17.h"
+#undef DOMAIN_FIELD
+};
+
#define DOMAIN_NAME_LEN 16

struct perf_record_schedstat_domain {
@@ -504,6 +517,7 @@ struct perf_record_schedstat_domain {
union {
struct perf_record_schedstat_domain_v15 v15;
struct perf_record_schedstat_domain_v16 v16;
+ struct perf_record_schedstat_domain_v17 v17;
};
__u16 nr_cpus;
__u8 cpu_mask[];
diff --git a/tools/lib/perf/include/perf/schedstat-v17.h b/tools/lib/perf/include/perf/schedstat-v17.h
new file mode 100644
index 000000000000..851d4f1f4ecb
--- /dev/null
+++ b/tools/lib/perf/include/perf/schedstat-v17.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifdef CPU_FIELD
+CPU_FIELD(__u32, yld_count, v17);
+CPU_FIELD(__u32, array_exp, v17);
+CPU_FIELD(__u32, sched_count, v17);
+CPU_FIELD(__u32, sched_goidle, v17);
+CPU_FIELD(__u32, ttwu_count, v17);
+CPU_FIELD(__u32, ttwu_local, v17);
+CPU_FIELD(__u64, rq_cpu_time, v17);
+CPU_FIELD(__u64, run_delay, v17);
+CPU_FIELD(__u64, pcount, v17);
+#endif
+
+#ifdef DOMAIN_FIELD
+DOMAIN_FIELD(__u32, busy_lb_count, v17);
+DOMAIN_FIELD(__u32, busy_lb_balanced, v17);
+DOMAIN_FIELD(__u32, busy_lb_failed, v17);
+DOMAIN_FIELD(__u32, busy_lb_imbalance_load, v17);
+DOMAIN_FIELD(__u32, busy_lb_imbalance_util, v17);
+DOMAIN_FIELD(__u32, busy_lb_imbalance_task, v17);
+DOMAIN_FIELD(__u32, busy_lb_imbalance_misfit, v17);
+DOMAIN_FIELD(__u32, busy_lb_gained, v17);
+DOMAIN_FIELD(__u32, busy_lb_hot_gained, v17);
+DOMAIN_FIELD(__u32, busy_lb_nobusyq, v17);
+DOMAIN_FIELD(__u32, busy_lb_nobusyg, v17);
+DOMAIN_FIELD(__u32, idle_lb_count, v17);
+DOMAIN_FIELD(__u32, idle_lb_balanced, v17);
+DOMAIN_FIELD(__u32, idle_lb_failed, v17);
+DOMAIN_FIELD(__u32, idle_lb_imbalance_load, v17);
+DOMAIN_FIELD(__u32, idle_lb_imbalance_util, v17);
+DOMAIN_FIELD(__u32, idle_lb_imbalance_task, v17);
+DOMAIN_FIELD(__u32, idle_lb_imbalance_misfit, v17);
+DOMAIN_FIELD(__u32, idle_lb_gained, v17);
+DOMAIN_FIELD(__u32, idle_lb_hot_gained, v17);
+DOMAIN_FIELD(__u32, idle_lb_nobusyq, v17);
+DOMAIN_FIELD(__u32, idle_lb_nobusyg, v17);
+DOMAIN_FIELD(__u32, newidle_lb_count, v17);
+DOMAIN_FIELD(__u32, newidle_lb_balanced, v17);
+DOMAIN_FIELD(__u32, newidle_lb_failed, v17);
+DOMAIN_FIELD(__u32, newidle_lb_imbalance_load, v17);
+DOMAIN_FIELD(__u32, newidle_lb_imbalance_util, v17);
+DOMAIN_FIELD(__u32, newidle_lb_imbalance_task, v17);
+DOMAIN_FIELD(__u32, newidle_lb_imbalance_misfit, v17);
+DOMAIN_FIELD(__u32, newidle_lb_gained, v17);
+DOMAIN_FIELD(__u32, newidle_lb_hot_gained, v17);
+DOMAIN_FIELD(__u32, newidle_lb_nobusyq, v17);
+DOMAIN_FIELD(__u32, newidle_lb_nobusyg, v17);
+DOMAIN_FIELD(__u32, alb_count, v17);
+DOMAIN_FIELD(__u32, alb_failed, v17);
+DOMAIN_FIELD(__u32, alb_pushed, v17);
+DOMAIN_FIELD(__u32, sbe_count, v17);
+DOMAIN_FIELD(__u32, sbe_balanced, v17);
+DOMAIN_FIELD(__u32, sbe_pushed, v17);
+DOMAIN_FIELD(__u32, sbf_count, v17);
+DOMAIN_FIELD(__u32, sbf_balanced, v17);
+DOMAIN_FIELD(__u32, sbf_pushed, v17);
+DOMAIN_FIELD(__u32, ttwu_wake_remote, v17);
+DOMAIN_FIELD(__u32, ttwu_move_affine, v17);
+DOMAIN_FIELD(__u32, ttwu_move_balance, v17);
+#endif
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 64f81e7b7f70..d09c3c99ab48 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -569,6 +569,9 @@ size_t perf_event__fprintf_schedstat_cpu(union perf_event *event, FILE *fp)
} else if (version == 16) {
#include <perf/schedstat-v16.h>
return size;
+ } else if (version == 17) {
+#include <perf/schedstat-v17.h>
+ return size;
}
#undef CPU_FIELD

@@ -647,6 +650,9 @@ size_t perf_event__fprintf_schedstat_domain(union perf_event *event, FILE *fp)
} else if (version == 16) {
#include <perf/schedstat-v16.h>
return size;
+ } else if (version == 17) {
+#include <perf/schedstat-v17.h>
+ return size;
}
#undef DOMAIN_FIELD

diff --git a/tools/perf/util/synthetic-events.c b/tools/perf/util/synthetic-events.c
index e9dc1e14cfea..fad0c472f297 100644
--- a/tools/perf/util/synthetic-events.c
+++ b/tools/perf/util/synthetic-events.c
@@ -2551,6 +2551,8 @@ static union perf_event *__synthesize_schedstat_cpu(struct io *io, __u16 version
#include <perf/schedstat-v15.h>
} else if (version == 16) {
#include <perf/schedstat-v16.h>
+ } else if (version == 17) {
+#include <perf/schedstat-v17.h>
}
#undef CPU_FIELD

@@ -2589,6 +2591,7 @@ static union perf_event *__synthesize_schedstat_domain(struct io *io, __u16 vers
int nr_cpus_avail = perf_env__nr_cpus_avail(&env);
struct perf_record_schedstat_domain *ds;
union perf_event *event;
+ size_t d_name_len = 0;
char *d_name = NULL;
size_t cpu_mask_len = 0;
char *cpu_mask = NULL;
@@ -2604,6 +2607,12 @@ static union perf_event *__synthesize_schedstat_domain(struct io *io, __u16 vers
return NULL;

ch = io__get_dec(io, &d_num);
+ if (version >= 17) {
+ if (io__getdelim(io, &d_name, &d_name_len, ' ') < 0 || !d_name_len)
+ return NULL;
+ d_name[d_name_len - 1] = '\0';
+ d_name_len--;
+ }

if (io__getdelim(io, &cpu_mask, &cpu_mask_len, ' ') < 0 || !cpu_mask_len)
goto out;
@@ -2650,6 +2659,7 @@ static union perf_event *__synthesize_schedstat_domain(struct io *io, __u16 vers
low = !low;
}

+ free(d_name);
free(cpu_mask);

#define DOMAIN_FIELD(_type, _name, _ver) \
@@ -2665,6 +2675,8 @@ static union perf_event *__synthesize_schedstat_domain(struct io *io, __u16 vers
#include <perf/schedstat-v15.h>
} else if (version == 16) {
#include <perf/schedstat-v16.h>
+ } else if (version == 17) {
+#include <perf/schedstat-v17.h>
}
#undef DOMAIN_FIELD

@@ -2676,6 +2688,7 @@ static union perf_event *__synthesize_schedstat_domain(struct io *io, __u16 vers
out_cpu_mask:
free(cpu_mask);
out:
+ free(d_name);
return NULL;
}

@@ -2709,6 +2722,8 @@ int perf_event__synthesize_schedstat(const struct perf_tool *tool,
version = 15;
} else if (!strcmp(line, "version 16\n")) {
version = 16;
+ } else if (!strcmp(line, "version 17\n")) {
+ version = 17;
} else {
pr_err("Unsupported %s version: %s", path, line + 8);
goto out_free_line;
--
2.43.0