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lib/rpmsg: add priority support for rpmsg endpoint

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Add priority field to rpmsg_endpoint structure to support
message prioritization. This allows different endpoints to
have different priority levels for scheduling purposes.

Changes:
- Define priority constants (MIN=0, DEFAULT=127, MAX=255)
- Add RPMSG_PRIO_RT alias for real-time priority
- Add priority field to struct rpmsg_endpoint
- Initialize priority to default value in rpmsg_register_endpoint()

Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
This commit is contained in:
Bowen Wang
2026-01-29 16:19:56 +08:00
committed by Alan C. Assis
parent bb5eaec973
commit 5e2b3a114f
3 changed files with 67 additions and 0 deletions
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64
openamp/0018-lib-rpmsg-add-priority-support-for-rpmsg-endpoint.patch Normal file
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@@ -0,0 +1,64 @@
From 502673fc80f0cfc1454b4ea7f106ab667f337b81 Mon Sep 17 00:00:00 2001
From: Bowen Wang <wangbowen6@xiaomi.com>
Date: Wed, 28 Jan 2026 21:37:53 +0800
Subject: [PATCH 18/18] lib/rpmsg: add priority support for rpmsg endpoint
Add priority field to rpmsg_endpoint structure to support
message prioritization. This allows different endpoints to
have different priority levels for scheduling purposes.
Changes:
- Define priority constants (MIN=0, DEFAULT=127, MAX=255)
- Add RPMSG_PRIO_RT alias for real-time priority
- Add priority field to struct rpmsg_endpoint
- Initialize priority to default value in rpmsg_register_endpoint()
Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
---
lib/include/openamp/rpmsg.h | 8 ++++++++
lib/rpmsg/rpmsg.c | 3 +++
2 files changed, 11 insertions(+)
diff --git a/lib/include/openamp/rpmsg.h open-amp/lib/include/openamp/rpmsg.h
index 5b702339aa..2d89084dc4 100644
--- a/lib/include/openamp/rpmsg.h
+++ open-amp/lib/include/openamp/rpmsg.h
@@ -53,6 +53,11 @@ extern "C" {
#define RPMSG_ERR_PERM (RPMSG_ERROR_BASE - 8)
#define RPMSG_EOPNOTSUPP (RPMSG_ERROR_BASE - 9)
+#define RPMSG_PRIO_MIN 0
+#define RPMSG_PRIO_DEFAULT 127
+#define RPMSG_PRIO_MAX 255
+#define RPMSG_PRIO_RT RPMSG_PRIO_MAX
+
struct rpmsg_endpoint;
struct rpmsg_device;
@@ -102,6 +107,9 @@ struct rpmsg_endpoint {
/** Endpoint service unbind callback, called when remote ept is destroyed */
rpmsg_ns_unbind_cb ns_unbind_cb;
+ /** The priority of current rpmsg endpoint */
+ uint8_t priority;
+
/** Endpoint node */
struct metal_list node;
diff --git a/lib/rpmsg/rpmsg.c open-amp/lib/rpmsg/rpmsg.c
index 28a8de61b3..04953d19d1 100644
--- a/lib/rpmsg/rpmsg.c
+++ open-amp/lib/rpmsg/rpmsg.c
@@ -318,6 +318,9 @@ void rpmsg_register_endpoint(struct rpmsg_device *rdev,
ept->ns_unbind_cb = ns_unbind_cb;
ept->priv = priv;
ept->rdev = rdev;
+ if (ept->priority == RPMSG_PRIO_MIN)
+ ept->priority = RPMSG_PRIO_DEFAULT;
+
metal_list_add_tail(&rdev->endpoints, &ept->node);
}
--
2.34.1

2
openamp/open-amp.cmake
View File

@@ -72,6 +72,8 @@ if(NOT EXISTS ${CMAKE_CURRENT_LIST_DIR}/open-amp)
${CMAKE_CURRENT_LIST_DIR}/0016-lib-rpmsg_virtio-support-release-the-name-service-me.patch
&& patch -p0 -d ${CMAKE_CURRENT_LIST_DIR} <
${CMAKE_CURRENT_LIST_DIR}/0017-lib-virtio-virtqueue-change-the-virtqueue-dump-log-l.patch
&& patch -p0 -d ${CMAKE_CURRENT_LIST_DIR} <
${CMAKE_CURRENT_LIST_DIR}/0018-lib-rpmsg-add-priority-support-for-rpmsg-endpoint.patch
DOWNLOAD_NO_PROGRESS true
TIMEOUT 30)

1
openamp/open-amp.defs
View File

@@ -83,6 +83,7 @@ open-amp.zip:
$(Q) patch -p0 < 0015-lib-remoteproc_virtio-optimize-virtqueue_notificatio.patch
$(Q) patch -p0 < 0016-lib-rpmsg_virtio-support-release-the-name-service-me.patch
$(Q) patch -p0 < 0017-lib-virtio-virtqueue-change-the-virtqueue-dump-log-l.patch
$(Q) patch -p0 < 0018-lib-rpmsg-add-priority-support-for-rpmsg-endpoint.patch
.openamp_headers: open-amp.zip
else