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diff --git a/sys/dev/firmware/arm/scmi_raw.c b/sys/dev/firmware/arm/scmi_raw.c
--- a/sys/dev/firmware/arm/scmi_raw.c
+++ b/sys/dev/firmware/arm/scmi_raw.c
@@ -54,6 +54,13 @@
#include "scmi_protocols.h"
#include "scmi_raw.h"
+SDT_PROVIDER_DECLARE(scmi);
+SDT_PROBE_DEFINE2(scmi, func, scmi_raw_message_inject, hdr_dump, "int", "int");
+SDT_PROBE_DEFINE2(scmi, func, scmi_raw_device_read, hdr_dump, "int", "int");
+SDT_PROBE_DEFINE2(scmi, func, scmi_raw_report, hdr_dump, "int", "int");
+SDT_PROBE_DEFINE3(scmi, func, scmi_raw_buf_insert, raw_alloc, "const char *", "int", "int");
+SDT_PROBE_DEFINE3(scmi, func, scmi_raw_buf_extract, raw_alloc, "const char *", "int", "int");
+
static const char *rbq_names[] = {
"rbq_replies",
"rbq_notifs",
@@ -180,6 +187,7 @@
mtx_lock_spin(&rbq->mtx[q_idx]);
STAILQ_INSERT_TAIL(&rbq->head[q_idx], rb, next);
rbq->cnt[q_idx]++;
+ SDT_PROBE3(scmi, func, scmi_raw_buf_insert, raw_alloc, rbq->name, q_idx, rbq->cnt[q_idx]);
mtx_unlock_spin(&rbq->mtx[q_idx]);
}
@@ -209,6 +217,8 @@
rb = STAILQ_FIRST(&rbq->head[q_idx]);
STAILQ_REMOVE_HEAD(&rbq->head[q_idx], next);
rbq->cnt[q_idx]--;
+ SDT_PROBE3(scmi, func, scmi_raw_buf_extract, raw_alloc,
+ rbq->name, q_idx, rbq->cnt[q_idx]);
}
mtx_unlock_spin(&rbq->mtx[q_idx]);
@@ -366,6 +376,9 @@
if (ret != 0)
goto err;
+ SDT_PROBE2(scmi, func, scmi_raw_message_inject, hdr_dump,
+ in_msg->hdr, in_msg->tx_len);
+
ret = scmi_request_tx(rbq->dev, &in_msg->payld[0]);
if (ret != 0)
goto err;
@@ -431,6 +444,9 @@
}
if (rb->offset >= rb->len) {
+ SDT_PROBE2(scmi, func, scmi_raw_device_read, hdr_dump,
+ rb->hdr, rb->len);
+
/* Whole snooped message has been read, return EOF and free raw_buf */
uiop->uio_offset = 0;
devfs_clear_cdevpriv();
@@ -503,6 +519,8 @@
memcpy(&rb->hdr, msg, len);
rb->len = len;
+ SDT_PROBE2(scmi, func, scmi_raw_report, hdr_dump, rb->hdr, rb->len);
+
scmi_raw_buf_enqueue(raw->rbqs[q_idx], rb);
}

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