scftorture: Count single_rpc offline failures in statistics outputgrafted

scf_torture_stats_print() aggregates each invoker thread's counters
into a local scf_statistics structure before printing, but the
n_single_rpc_ofl field is missing from the aggregation loop.  As a
result, the "single_rpc_ofl" value printed in the statistics line is
always zero, even when smp_call_function_single() invocations for the
RPC test have failed due to offline CPUs and been counted by the
invoker threads.

Add the missing accumulation so that the printed value reflects the
actual counts.

Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

1 files changed, 223 insertions, 0 deletions

diff --git a/include/trace/events/oom.h b/include/trace/events/oom.h
new file mode 100644
index 000000000..9f0a5d148
--- /dev/null
+++ b/include/trace/events/oom.h
@@ -0,0 +1,223 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM oom
+
+#if !defined(_TRACE_OOM_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_OOM_H
+#include <linux/tracepoint.h>
+#include <trace/events/mmflags.h>
+
+#define PG_COUNT_TO_KB(x) ((x) << (PAGE_SHIFT - 10))
+
+TRACE_EVENT(oom_score_adj_update,
+
+	TP_PROTO(struct task_struct *task),
+
+	TP_ARGS(task),
+
+	TP_STRUCT__entry(
+		__field(	pid_t,	pid)
+		__array(	char,	comm,	TASK_COMM_LEN )
+		__field(	short,	oom_score_adj)
+	),
+
+	TP_fast_assign(
+		__entry->pid = task->pid;
+		memcpy(__entry->comm, task->comm, TASK_COMM_LEN);
+		__entry->oom_score_adj = task->signal->oom_score_adj;
+	),
+
+	TP_printk("pid=%d comm=%s oom_score_adj=%hd",
+		__entry->pid, __entry->comm, __entry->oom_score_adj)
+);
+
+TRACE_EVENT(reclaim_retry_zone,
+
+	TP_PROTO(struct zoneref *zoneref,
+		int order,
+		unsigned long reclaimable,
+		unsigned long available,
+		unsigned long min_wmark,
+		int no_progress_loops,
+		bool wmark_check),
+
+	TP_ARGS(zoneref, order, reclaimable, available, min_wmark, no_progress_loops, wmark_check),
+
+	TP_STRUCT__entry(
+		__field(	int, node)
+		__field(	int, zone_idx)
+		__field(	int,	order)
+		__field(	unsigned long,	reclaimable)
+		__field(	unsigned long,	available)
+		__field(	unsigned long,	min_wmark)
+		__field(	int,	no_progress_loops)
+		__field(	bool,	wmark_check)
+	),
+
+	TP_fast_assign(
+		__entry->node = zonelist_node_idx(zoneref);
+		__entry->zone_idx = zonelist_zone_idx(zoneref);
+		__entry->order = order;
+		__entry->reclaimable = reclaimable;
+		__entry->available = available;
+		__entry->min_wmark = min_wmark;
+		__entry->no_progress_loops = no_progress_loops;
+		__entry->wmark_check = wmark_check;
+	),
+
+	TP_printk("node=%d zone=%-8s order=%d reclaimable=%lu available=%lu min_wmark=%lu no_progress_loops=%d wmark_check=%d",
+			__entry->node, __print_symbolic(__entry->zone_idx, ZONE_TYPE),
+			__entry->order,
+			__entry->reclaimable, __entry->available, __entry->min_wmark,
+			__entry->no_progress_loops,
+			__entry->wmark_check)
+);
+
+TRACE_EVENT(mark_victim,
+	TP_PROTO(struct task_struct *task, uid_t uid),
+
+	TP_ARGS(task, uid),
+
+	TP_STRUCT__entry(
+		__field(int, pid)
+		__string(comm, task->comm)
+		__field(unsigned long, total_vm)
+		__field(unsigned long, anon_rss)
+		__field(unsigned long, file_rss)
+		__field(unsigned long, shmem_rss)
+		__field(uid_t, uid)
+		__field(unsigned long, pgtables)
+		__field(short, oom_score_adj)
+	),
+
+	TP_fast_assign(
+		__entry->pid = task->pid;
+		__assign_str(comm);
+		__entry->total_vm = PG_COUNT_TO_KB(task->mm->total_vm);
+		__entry->anon_rss = PG_COUNT_TO_KB(get_mm_counter(task->mm, MM_ANONPAGES));
+		__entry->file_rss = PG_COUNT_TO_KB(get_mm_counter(task->mm, MM_FILEPAGES));
+		__entry->shmem_rss = PG_COUNT_TO_KB(get_mm_counter(task->mm, MM_SHMEMPAGES));
+		__entry->uid = uid;
+		__entry->pgtables = mm_pgtables_bytes(task->mm) >> 10;
+		__entry->oom_score_adj = task->signal->oom_score_adj;
+	),
+
+	TP_printk("pid=%d comm=%s total-vm=%lukB anon-rss=%lukB file-rss:%lukB shmem-rss:%lukB uid=%u pgtables=%lukB oom_score_adj=%hd",
+		__entry->pid,
+		__get_str(comm),
+		__entry->total_vm,
+		__entry->anon_rss,
+		__entry->file_rss,
+		__entry->shmem_rss,
+		__entry->uid,
+		__entry->pgtables,
+		__entry->oom_score_adj
+	)
+);
+
+TRACE_EVENT(wake_reaper,
+	TP_PROTO(int pid),
+
+	TP_ARGS(pid),
+
+	TP_STRUCT__entry(
+		__field(int, pid)
+	),
+
+	TP_fast_assign(
+		__entry->pid = pid;
+	),
+
+	TP_printk("pid=%d", __entry->pid)
+);
+
+TRACE_EVENT(start_task_reaping,
+	TP_PROTO(int pid),
+
+	TP_ARGS(pid),
+
+	TP_STRUCT__entry(
+		__field(int, pid)
+	),
+
+	TP_fast_assign(
+		__entry->pid = pid;
+	),
+
+	TP_printk("pid=%d", __entry->pid)
+);
+
+TRACE_EVENT(finish_task_reaping,
+	TP_PROTO(int pid),
+
+	TP_ARGS(pid),
+
+	TP_STRUCT__entry(
+		__field(int, pid)
+	),
+
+	TP_fast_assign(
+		__entry->pid = pid;
+	),
+
+	TP_printk("pid=%d", __entry->pid)
+);
+
+TRACE_EVENT(skip_task_reaping,
+	TP_PROTO(int pid),
+
+	TP_ARGS(pid),
+
+	TP_STRUCT__entry(
+		__field(int, pid)
+	),
+
+	TP_fast_assign(
+		__entry->pid = pid;
+	),
+
+	TP_printk("pid=%d", __entry->pid)
+);
+
+#ifdef CONFIG_COMPACTION
+TRACE_EVENT(compact_retry,
+
+	TP_PROTO(int order,
+		enum compact_priority priority,
+		enum compact_result result,
+		int retries,
+		int max_retries,
+		bool ret),
+
+	TP_ARGS(order, priority, result, retries, max_retries, ret),
+
+	TP_STRUCT__entry(
+		__field(	int, order)
+		__field(	int, priority)
+		__field(	int, result)
+		__field(	int, retries)
+		__field(	int, max_retries)
+		__field(	bool, ret)
+	),
+
+	TP_fast_assign(
+		__entry->order = order;
+		__entry->priority = priority;
+		__entry->result = compact_result_to_feedback(result);
+		__entry->retries = retries;
+		__entry->max_retries = max_retries;
+		__entry->ret = ret;
+	),
+
+	TP_printk("order=%d priority=%s compaction_result=%s retries=%d max_retries=%d should_retry=%d",
+			__entry->order,
+			__print_symbolic(__entry->priority, COMPACTION_PRIORITY),
+			__print_symbolic(__entry->result, COMPACTION_FEEDBACK),
+			__entry->retries, __entry->max_retries,
+			__entry->ret)
+);
+#endif /* CONFIG_COMPACTION */
+#endif
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>