linux-kernel - [PATCH 1/2] remoteproc: core: Introduce rproc_del

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Message-ID: <1654888985-3846-2-git-send-email-quic_clew@quicinc.com>
Date:   Fri, 10 Jun 2022 12:23:04 -0700
From:   Chris Lew <quic_clew@...cinc.com>
To:     <bjorn.andersson@...aro.org>, <mathieu.poirier@...aro.org>
CC:     <linux-remoteproc@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <quic_clew@...cinc.com>
Subject: [PATCH 1/2] remoteproc: core: Introduce rproc_del_carveout

To mirror the exported rproc_add_carveout(), add a rproc_del_carveout()
so memory carveout resources added by devices outside of remoteproc can
manage the resource lifetime more accurately.

Signed-off-by: Chris Lew <quic_clew@...cinc.com>
---
 drivers/remoteproc/remoteproc_core.c | 20 ++++++++++++++++++++
 include/linux/remoteproc.h           |  1 +
 2 files changed, 21 insertions(+)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 02a04ab34a23..ee71fccae970 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1001,6 +1001,26 @@ void rproc_add_carveout(struct rproc *rproc, struct rproc_mem_entry *mem)
 EXPORT_SYMBOL(rproc_add_carveout);
 
 /**
+ * rproc_del_carveout() - remove an allocated carveout region
+ * @rproc: rproc handle
+ * @mem: memory entry to register
+ *
+ * This function removes specified memory entry in @rproc carveouts list.
+ */
+void rproc_del_carveout(struct rproc *rproc, struct rproc_mem_entry *mem)
+{
+	struct rproc_mem_entry *entry, *tmp;
+
+	list_for_each_entry_safe(entry, tmp, &rproc->carveouts, node) {
+		if (entry == mem) {
+			list_del(&mem->node);
+			return;
+		}
+	}
+}
+EXPORT_SYMBOL(rproc_del_carveout);
+
+/**
  * rproc_mem_entry_init() - allocate and initialize rproc_mem_entry struct
  * @dev: pointer on device struct
  * @va: virtual address
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 7c943f0a2fc4..43112aa78ffe 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -658,6 +658,7 @@ struct rproc *devm_rproc_alloc(struct device *dev, const char *name,
 int devm_rproc_add(struct device *dev, struct rproc *rproc);
 
 void rproc_add_carveout(struct rproc *rproc, struct rproc_mem_entry *mem);
+void rproc_del_carveout(struct rproc *rproc, struct rproc_mem_entry *mem);
 
 struct rproc_mem_entry *
 rproc_mem_entry_init(struct device *dev,
-- 
2.7.4