workqueue: skip the node_nr_active update for non-unbound workqueuesgrafted

apply_wqattrs_commit() updates node_nr_active->max unconditionally.
wq->node_nr_active[] is only allocated for unbound workqueues, so guard
the call before per-cpu workqueues start using this path.

No functional change: only unbound workqueues reach apply_wqattrs_*()
today.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 95 insertions, 0 deletions

diff --git a/include/trace/events/kyber.h b/include/trace/events/kyber.h
new file mode 100644
index 000000000..9d44781ef
--- /dev/null
+++ b/include/trace/events/kyber.h
@@ -0,0 +1,95 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM kyber
+
+#if !defined(_TRACE_KYBER_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_KYBER_H
+
+#include <linux/blkdev.h>
+#include <linux/tracepoint.h>
+
+#define DOMAIN_LEN		16
+#define LATENCY_TYPE_LEN	8
+
+TRACE_EVENT(kyber_latency,
+
+	TP_PROTO(dev_t dev, const char *domain, const char *type,
+		 unsigned int percentile, unsigned int numerator,
+		 unsigned int denominator, unsigned int samples),
+
+	TP_ARGS(dev, domain, type, percentile, numerator, denominator, samples),
+
+	TP_STRUCT__entry(
+		__field(	dev_t,	dev				)
+		__array(	char,	domain,	DOMAIN_LEN		)
+		__array(	char,	type,	LATENCY_TYPE_LEN	)
+		__field(	u8,	percentile			)
+		__field(	u8,	numerator			)
+		__field(	u8,	denominator			)
+		__field(	unsigned int,	samples			)
+	),
+
+	TP_fast_assign(
+		__entry->dev		= dev;
+		strscpy(__entry->domain, domain, sizeof(__entry->domain));
+		strscpy(__entry->type, type, sizeof(__entry->type));
+		__entry->percentile	= percentile;
+		__entry->numerator	= numerator;
+		__entry->denominator	= denominator;
+		__entry->samples	= samples;
+	),
+
+	TP_printk("%d,%d %s %s p%u %u/%u samples=%u",
+		  MAJOR(__entry->dev), MINOR(__entry->dev), __entry->domain,
+		  __entry->type, __entry->percentile, __entry->numerator,
+		  __entry->denominator, __entry->samples)
+);
+
+TRACE_EVENT(kyber_adjust,
+
+	TP_PROTO(dev_t dev, const char *domain, unsigned int depth),
+
+	TP_ARGS(dev, domain, depth),
+
+	TP_STRUCT__entry(
+		__field(	dev_t,	dev			)
+		__array(	char,	domain,	DOMAIN_LEN	)
+		__field(	unsigned int,	depth		)
+	),
+
+	TP_fast_assign(
+		__entry->dev		= dev;
+		strscpy(__entry->domain, domain, sizeof(__entry->domain));
+		__entry->depth		= depth;
+	),
+
+	TP_printk("%d,%d %s %u",
+		  MAJOR(__entry->dev), MINOR(__entry->dev), __entry->domain,
+		  __entry->depth)
+);
+
+TRACE_EVENT(kyber_throttled,
+
+	TP_PROTO(dev_t dev, const char *domain),
+
+	TP_ARGS(dev, domain),
+
+	TP_STRUCT__entry(
+		__field(	dev_t,	dev			)
+		__array(	char,	domain,	DOMAIN_LEN	)
+	),
+
+	TP_fast_assign(
+		__entry->dev		= dev;
+		strscpy(__entry->domain, domain, sizeof(__entry->domain));
+	),
+
+	TP_printk("%d,%d %s", MAJOR(__entry->dev), MINOR(__entry->dev),
+		  __entry->domain)
+);
+
+#define _TRACE_KYBER_H
+#endif /* _TRACE_KYBER_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>