1 files changed, 87 insertions, 0 deletions
diff --git a/arch/s390/include/asm/trace/ap.h b/arch/s390/include/asm/trace/ap.h
new file mode 100644
index 000000000000..5c2e6c664b4d
--- /dev/null
+++ b/arch/s390/include/asm/trace/ap.h
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Tracepoint definitions for s390 ap bus related trace events
+ *
+ * There are two AP bus related tracepoint events defined here:
+ * There is a tracepoint s390_ap_nqap event immediately after a request
+ * has been pushed into the AP firmware queue with the NQAP AP command.
+ * The other tracepoint s390_ap_dqap event fires immediately after a
+ * reply has been pulled out of the AP firmware queue via DQAP AP command.
+ * The idea of these two trace events focuses on performance to measure
+ * the runtime of a crypto request/reply as close as possible at the
+ * firmware level. In combination with the two zcrypt tracepoints (see the
+ * zcrypt.h trace event definition file) this gives measurement data about
+ * the runtime of a request/reply within the zcrpyt and AP bus layer.
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM s390
+
+#if !defined(_TRACE_S390_AP_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_S390_AP_H
+
+#include <linux/tracepoint.h>
+
+DECLARE_EVENT_CLASS(s390_ap_nqapdqap_template,
+		    TP_PROTO(u16 card, u16 dom, u32 status, u64 psmid),
+		    TP_ARGS(card, dom, status, psmid),
+		    TP_STRUCT__entry(
+			    __field(u16, card)
+			    __field(u16, dom)
+			    __field(u32, status)
+			    __field(u64, psmid)),
+		    TP_fast_assign(
+			    __entry->card = card;
+			    __entry->dom = dom;
+			    __entry->status = status;
+			    __entry->psmid = psmid;),
+		    TP_printk("card=%u dom=%u status=0x%08x psmid=0x%016lx",
+			      (unsigned short)__entry->card,
+			      (unsigned short)__entry->dom,
+			      (unsigned int)__entry->status,
+			      (unsigned long)__entry->psmid)
+);
+
+/**
+ * trace_s390_ap_nqap - ap msg nqap tracepoint function
+ * @card:   Crypto card number addressed.
+ * @dom:    Domain within the crypto card addressed.
+ * @status: AP queue status (GR1 on return of nqap).
+ * @psmid:  Unique id identifying this request/reply.
+ *
+ * Called immediately after a request has been enqueued into
+ * the AP firmware queue with the NQAP command.
+ */
+DEFINE_EVENT(s390_ap_nqapdqap_template,
+	     s390_ap_nqap,
+	     TP_PROTO(u16 card, u16 dom, u32 status, u64 psmid),
+	     TP_ARGS(card, dom, status, psmid)
+);
+
+/**
+ * trace_s390_ap_dqap - ap msg dqap tracepoint function
+ * @card:  Crypto card number addressed.
+ * @dom:   Domain within the crypto card addressed.
+ * @status: AP queue status (GR1 on return of dqap).
+ * @psmid: Unique id identifying this request/reply.
+ *
+ * Called immediately after a reply has been dequeued from
+ * the AP firmware queue with the DQAP command.
+ */
+DEFINE_EVENT(s390_ap_nqapdqap_template,
+	     s390_ap_dqap,
+	     TP_PROTO(u16 card, u16 dom, u32 status, u64 psmid),
+	     TP_ARGS(card, dom, status, psmid)
+);
+
+#endif /* _TRACE_S390_AP_H */
+
+/* This part must be outside protection */
+
+#undef TRACE_INCLUDE_PATH
+#undef TRACE_INCLUDE_FILE
+
+#define TRACE_INCLUDE_PATH asm/trace
+#define TRACE_INCLUDE_FILE ap
+
+#include <trace/define_trace.h>