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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Jan 2026 18:01:08.3181 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ecb4be16-08a2-4dce-d078-08de5784b90b X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL6PEPF0001AB50.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB6627 Content-Type: text/plain; charset="utf-8" /proc/schedstat file output is standardized with version number. Add support to record and raw dump v17 version layout. Version 17 of schedstats removed 'lb_imbalance' field as it has no significance anymore and instead added more relevant fields namely 'lb_imbalance_load', 'lb_imbalance_util', 'lb_imbalance_task' and 'lb_imbalance_misfit'. The domain field prints the name of the corresponding sched domain from this version onwards. Co-developed-by: Ravi Bangoria Signed-off-by: Ravi Bangoria Signed-off-by: Swapnil Sapkal --- tools/lib/perf/Makefile | 2 +- tools/lib/perf/include/perf/event.h | 14 ++ tools/lib/perf/include/perf/schedstat-v17.h | 164 ++++++++++++++++++++ tools/perf/util/event.c | 6 + tools/perf/util/synthetic-events.c | 11 ++ 5 files changed, 196 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 965e066fd780..27e6490f64dc 100644 --- a/tools/lib/perf/Makefile +++ b/tools/lib/perf/Makefile @@ -179,7 +179,7 @@ install_lib: libs cp -fpR $(LIBPERF_ALL) $(DESTDIR)$(libdir_SQ) =20 HDRS :=3D bpf_perf.h core.h cpumap.h threadmap.h evlist.h evsel.h event.h = mmap.h -HDRS +=3D schedstat-v15.h schedstat-v16.h +HDRS +=3D schedstat-v15.h schedstat-v16.h schedstat-v17.h INTERNAL_HDRS :=3D cpumap.h evlist.h evsel.h lib.h mmap.h rc_check.h threa= dmap.h xyarray.h =20 INSTALL_HDRS_PFX :=3D $(DESTDIR)$(prefix)/include/perf diff --git a/tools/lib/perf/include/perf/event.h b/tools/lib/perf/include/p= erf/event.h index bd4d507ea8ab..9043dc72b5d6 100644 --- a/tools/lib/perf/include/perf/event.h +++ b/tools/lib/perf/include/perf/event.h @@ -508,6 +508,12 @@ struct perf_record_schedstat_cpu_v16 { #undef CPU_FIELD }; =20 +struct perf_record_schedstat_cpu_v17 { +#define CPU_FIELD(_type, _name, _desc, _format, _is_pct, _pct_of, _ver) _= type _name +#include "schedstat-v17.h" +#undef CPU_FIELD +}; + struct perf_record_schedstat_cpu { struct perf_event_header header; __u64 timestamp; @@ -518,6 +524,7 @@ struct perf_record_schedstat_cpu { union { struct perf_record_schedstat_cpu_v15 v15; struct perf_record_schedstat_cpu_v16 v16; + struct perf_record_schedstat_cpu_v17 v17; }; }; =20 @@ -533,6 +540,12 @@ struct perf_record_schedstat_domain_v16 { #undef DOMAIN_FIELD }; =20 +struct perf_record_schedstat_domain_v17 { +#define DOMAIN_FIELD(_type, _name, _desc, _format, _is_jiffies, _ver) _ty= pe _name +#include "schedstat-v17.h" +#undef DOMAIN_FIELD +}; + #define DOMAIN_NAME_LEN 16 =20 struct perf_record_schedstat_domain { @@ -544,6 +557,7 @@ 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; }; }; =20 diff --git a/tools/lib/perf/include/perf/schedstat-v17.h b/tools/lib/perf/i= nclude/perf/schedstat-v17.h new file mode 100644 index 000000000000..865dc7c1039c --- /dev/null +++ b/tools/lib/perf/include/perf/schedstat-v17.h @@ -0,0 +1,164 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifdef CPU_FIELD +CPU_FIELD(__u32, yld_count, "sched_yield() count", + "%11u", false, yld_count, v17); +CPU_FIELD(__u32, array_exp, "Legacy counter can be ignored", + "%11u", false, array_exp, v17); +CPU_FIELD(__u32, sched_count, "schedule() called", + "%11u", false, sched_count, v17); +CPU_FIELD(__u32, sched_goidle, "schedule() left the processor idle", + "%11u", true, sched_count, v17); +CPU_FIELD(__u32, ttwu_count, "try_to_wake_up() was called", + "%11u", false, ttwu_count, v17); +CPU_FIELD(__u32, ttwu_local, "try_to_wake_up() was called to wake up the l= ocal cpu", + "%11u", true, ttwu_count, v17); +CPU_FIELD(__u64, rq_cpu_time, "total runtime by tasks on this processor (i= n jiffies)", + "%11llu", false, rq_cpu_time, v17); +CPU_FIELD(__u64, run_delay, "total waittime by tasks on this processor (in= jiffies)", + "%11llu", true, rq_cpu_time, v17); +CPU_FIELD(__u64, pcount, "total timeslices run on this cpu", + "%11llu", false, pcount, v17); +#endif /* CPU_FIELD */ + +#ifdef DOMAIN_FIELD +#ifdef DOMAIN_CATEGORY +DOMAIN_CATEGORY(" "); +#endif +DOMAIN_FIELD(__u32, busy_lb_count, + "load_balance() count on cpu busy", "%11u", true, v17); +DOMAIN_FIELD(__u32, busy_lb_balanced, + "load_balance() found balanced on cpu busy", "%11u", true, v17); +DOMAIN_FIELD(__u32, busy_lb_failed, + "load_balance() move task failed on cpu busy", "%11u", true, v17); +DOMAIN_FIELD(__u32, busy_lb_imbalance_load, + "imbalance in load on cpu busy", "%11u", false, v17); +DOMAIN_FIELD(__u32, busy_lb_imbalance_util, + "imbalance in utilization on cpu busy", "%11u", false, v17); +DOMAIN_FIELD(__u32, busy_lb_imbalance_task, + "imbalance in number of tasks on cpu busy", "%11u", false, v17); +DOMAIN_FIELD(__u32, busy_lb_imbalance_misfit, + "imbalance in misfit tasks on cpu busy", "%11u", false, v17); +DOMAIN_FIELD(__u32, busy_lb_gained, + "pull_task() count on cpu busy", "%11u", false, v17); +DOMAIN_FIELD(__u32, busy_lb_hot_gained, + "pull_task() when target task was cache-hot on cpu busy", "%11u", fa= lse, v17); +DOMAIN_FIELD(__u32, busy_lb_nobusyq, + "load_balance() failed to find busier queue on cpu busy", "%11u", tr= ue, v17); +DOMAIN_FIELD(__u32, busy_lb_nobusyg, + "load_balance() failed to find busier group on cpu busy", "%11u", tr= ue, v17); +#ifdef DERIVED_CNT_FIELD +DERIVED_CNT_FIELD(busy_lb_success_count, "load_balance() success count on = cpu busy", "%11u", + busy_lb_count, busy_lb_balanced, busy_lb_failed, v17); +#endif +#ifdef DERIVED_AVG_FIELD +DERIVED_AVG_FIELD(busy_lb_avg_pulled, + "avg task pulled per successful lb attempt (cpu busy)", "%11.2Lf", + busy_lb_count, busy_lb_balanced, busy_lb_failed, busy_lb_gained, v17); +#endif +#ifdef DOMAIN_CATEGORY +DOMAIN_CATEGORY(" "); +#endif +DOMAIN_FIELD(__u32, idle_lb_count, + "load_balance() count on cpu idle", "%11u", true, v17); +DOMAIN_FIELD(__u32, idle_lb_balanced, + "load_balance() found balanced on cpu idle", "%11u", true, v17); +DOMAIN_FIELD(__u32, idle_lb_failed, + "load_balance() move task failed on cpu idle", "%11u", true, v17); +DOMAIN_FIELD(__u32, idle_lb_imbalance_load, + "imbalance in load on cpu idle", "%11u", false, v17); +DOMAIN_FIELD(__u32, idle_lb_imbalance_util, + "imbalance in utilization on cpu idle", "%11u", false, v17); +DOMAIN_FIELD(__u32, idle_lb_imbalance_task, + "imbalance in number of tasks on cpu idle", "%11u", false, v17); +DOMAIN_FIELD(__u32, idle_lb_imbalance_misfit, + "imbalance in misfit tasks on cpu idle", "%11u", false, v17); +DOMAIN_FIELD(__u32, idle_lb_gained, + "pull_task() count on cpu idle", "%11u", false, v17); +DOMAIN_FIELD(__u32, idle_lb_hot_gained, + "pull_task() when target task was cache-hot on cpu idle", "%11u", fa= lse, v17); +DOMAIN_FIELD(__u32, idle_lb_nobusyq, + "load_balance() failed to find busier queue on cpu idle", "%11u", tr= ue, v17); +DOMAIN_FIELD(__u32, idle_lb_nobusyg, + "load_balance() failed to find busier group on cpu idle", "%11u", tr= ue, v17); +#ifdef DERIVED_CNT_FIELD +DERIVED_CNT_FIELD(idle_lb_success_count, "load_balance() success count on = cpu idle", "%11u", + idle_lb_count, idle_lb_balanced, idle_lb_failed, v17); +#endif +#ifdef DERIVED_AVG_FIELD +DERIVED_AVG_FIELD(idle_lb_avg_pulled, + "avg task pulled per successful lb attempt (cpu idle)", "%11.2Lf", + idle_lb_count, idle_lb_balanced, idle_lb_failed, idle_lb_gained, v17); +#endif +#ifdef DOMAIN_CATEGORY +DOMAIN_CATEGORY(" "); +#endif +DOMAIN_FIELD(__u32, newidle_lb_count, + "load_balance() count on cpu newly idle", "%11u", true, v17); +DOMAIN_FIELD(__u32, newidle_lb_balanced, + "load_balance() found balanced on cpu newly idle", "%11u", true, v17= ); +DOMAIN_FIELD(__u32, newidle_lb_failed, + "load_balance() move task failed on cpu newly idle", "%11u", true, v= 17); +DOMAIN_FIELD(__u32, newidle_lb_imbalance_load, + "imbalance in load on cpu newly idle", "%11u", false, v17); +DOMAIN_FIELD(__u32, newidle_lb_imbalance_util, + "imbalance in utilization on cpu newly idle", "%11u", false, v17); +DOMAIN_FIELD(__u32, newidle_lb_imbalance_task, + "imbalance in number of tasks on cpu newly idle", "%11u", false, v17= ); +DOMAIN_FIELD(__u32, newidle_lb_imbalance_misfit, + "imbalance in misfit tasks on cpu newly idle", "%11u", false, v17); +DOMAIN_FIELD(__u32, newidle_lb_gained, + "pull_task() count on cpu newly idle", "%11u", false, v17); +DOMAIN_FIELD(__u32, newidle_lb_hot_gained, + "pull_task() when target task was cache-hot on cpu newly idle", "%11= u", false, v17); +DOMAIN_FIELD(__u32, newidle_lb_nobusyq, + "load_balance() failed to find busier queue on cpu newly idle", "%11= u", true, v17); +DOMAIN_FIELD(__u32, newidle_lb_nobusyg, + "load_balance() failed to find busier group on cpu newly idle", "%11= u", true, v17); +#ifdef DERIVED_CNT_FIELD +DERIVED_CNT_FIELD(newidle_lb_success_count, + "load_balance() success count on cpu newly idle", "%11u", + newidle_lb_count, newidle_lb_balanced, newidle_lb_failed, v17); +#endif +#ifdef DERIVED_AVG_FIELD +DERIVED_AVG_FIELD(newidle_lb_avg_pulled, + "avg task pulled per successful lb attempt (cpu newly idle)", "%11.2Lf= ", + newidle_lb_count, newidle_lb_balanced, newidle_lb_failed, newidle_lb_g= ained, v17); +#endif +#ifdef DOMAIN_CATEGORY +DOMAIN_CATEGORY(" "); +#endif +DOMAIN_FIELD(__u32, alb_count, + "active_load_balance() count", "%11u", false, v17); +DOMAIN_FIELD(__u32, alb_failed, + "active_load_balance() move task failed", "%11u", false, v17); +DOMAIN_FIELD(__u32, alb_pushed, + "active_load_balance() successfully moved a task", "%11u", false, v1= 7); +#ifdef DOMAIN_CATEGORY +DOMAIN_CATEGORY(" "); +#endif +DOMAIN_FIELD(__u32, sbe_count, + "sbe_count is not used", "%11u", false, v17); +DOMAIN_FIELD(__u32, sbe_balanced, + "sbe_balanced is not used", "%11u", false, v17); +DOMAIN_FIELD(__u32, sbe_pushed, + "sbe_pushed is not used", "%11u", false, v17); +#ifdef DOMAIN_CATEGORY +DOMAIN_CATEGORY(" "); +#endif +DOMAIN_FIELD(__u32, sbf_count, + "sbf_count is not used", "%11u", false, v17); +DOMAIN_FIELD(__u32, sbf_balanced, + "sbf_balanced is not used", "%11u", false, v17); +DOMAIN_FIELD(__u32, sbf_pushed, + "sbf_pushed is not used", "%11u", false, v17); +#ifdef DOMAIN_CATEGORY +DOMAIN_CATEGORY(" "); +#endif +DOMAIN_FIELD(__u32, ttwu_wake_remote, + "try_to_wake_up() awoke a task that last ran on a diff cpu", "%11u",= false, v17); +DOMAIN_FIELD(__u32, ttwu_move_affine, + "try_to_wake_up() moved task because cache-cold on own cpu", "%11u",= false, v17); +DOMAIN_FIELD(__u32, ttwu_move_balance, + "try_to_wake_up() started passive balancing", "%11u", false, v17); +#endif /* DOMAIN_FIELD */ diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index 9a434e2e480f..f40419d21034 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -588,6 +588,9 @@ size_t perf_event__fprintf_schedstat_cpu(union perf_eve= nt *event, FILE *fp) } else if (version =3D=3D 16) { #include return size; + } else if (version =3D=3D 17) { +#include + return size; } #undef CPU_FIELD =20 @@ -610,6 +613,9 @@ size_t perf_event__fprintf_schedstat_domain(union perf_= event *event, FILE *fp) } else if (version =3D=3D 16) { #include return size; + } else if (version =3D=3D 17) { +#include + return size; } #undef DOMAIN_FIELD =20 diff --git a/tools/perf/util/synthetic-events.c b/tools/perf/util/synthetic= -events.c index 4ce37357db05..ef79433ebc3a 100644 --- a/tools/perf/util/synthetic-events.c +++ b/tools/perf/util/synthetic-events.c @@ -2569,6 +2569,8 @@ static union perf_event *__synthesize_schedstat_cpu(s= truct io *io, __u16 version #include } else if (version =3D=3D 16) { #include + } else if (version =3D=3D 17) { +#include } #undef CPU_FIELD =20 @@ -2595,6 +2597,11 @@ static union perf_event *__synthesize_schedstat_doma= in(struct io *io, __u16 vers return NULL; =20 ch =3D io__get_dec(io, &d_num); + if (version >=3D 17) { + /* Skip domain name as it can be extracted from perf header */ + while (io__get_char(io) !=3D ' ') + continue; + } =20 /* Skip cpumask as it can be extracted from perf header */ while (io__get_char(io) !=3D ' ') @@ -2624,6 +2631,8 @@ static union perf_event *__synthesize_schedstat_domai= n(struct io *io, __u16 vers #include } else if (version =3D=3D 16) { #include + } else if (version =3D=3D 17) { +#include } #undef DOMAIN_FIELD =20 @@ -2667,6 +2676,8 @@ int perf_event__synthesize_schedstat(const struct per= f_tool *tool, version =3D 15; } else if (!strcmp(line, "version 16\n")) { version =3D 16; + } else if (!strcmp(line, "version 17\n")) { + version =3D 17; } else { pr_err("Unsupported %s version: %s", path, line + 8); goto out_free_line; --=20 2.43.0