This patch adds a mechanism for assigning each rproc segment with
a custom dump function. It is to be called for each rproc segment
during coredump if assigned.
Signed-off-by: Sibi Sankar <sibis@xxxxxxxxxxxxxx>
---
drivers/remoteproc/remoteproc_core.c | 37 ++++++++++++++++++++++++++++
include/linux/remoteproc.h | 5 ++++
2 files changed, 42 insertions(+)
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index ec56cd822b26..3d70b7dd1f18 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1120,6 +1120,43 @@ int rproc_coredump_add_segment(struct rproc *rproc, dma_addr_t da, size_t size)
}
EXPORT_SYMBOL(rproc_coredump_add_segment);
+/**
+ * rproc_coredump_add_custom_segment() - add segment of device memory to
+ * coredump and extend it with custom
+ * dump function
+ * @rproc: handle of a remote processor
+ * @da: device address
+ * @size: size of segment
+ * @dumpfn: custom dump function called for each segment during coredump
+ *
+ * Add device memory to the list of segments to be included in a coredump for
+ * the remoteproc and associate the segment with the given custom dump
+ * function.
+ *
+ * Return: 0 on success, negative errno on error.
+ */
+int rproc_coredump_add_custom_segment(struct rproc *rproc,
+ dma_addr_t da, size_t size,
+ void (*dumpfn)(struct rproc *rproc,
+ void *ptr, size_t len,
+ void *priv))
+{
+ struct rproc_dump_segment *segment;
+
+ segment = kzalloc(sizeof(*segment), GFP_KERNEL);
+ if (!segment)
+ return -ENOMEM;
+
+ segment->da = da;
+ segment->size = size;
+ segment->dump = dumpfn;
+
+ list_add_tail(&segment->node, &rproc->dump_segments);
+
+ return 0;
+}
+EXPORT_SYMBOL(rproc_coredump_add_custom_segment);
+
/**
* rproc_coredump() - perform coredump
* @rproc: rproc handle
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 0fbb01a9955c..5a1ad008ec28 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -560,6 +560,11 @@ int rproc_boot(struct rproc *rproc);
void rproc_shutdown(struct rproc *rproc);
void rproc_report_crash(struct rproc *rproc, enum rproc_crash_type type);
int rproc_coredump_add_segment(struct rproc *rproc, dma_addr_t da, size_t size);
+int rproc_coredump_add_custom_segment(struct rproc *rproc,
+ dma_addr_t da, size_t size,
+ void (*dumpfn)(struct rproc *rproc,
+ void *ptr, size_t len,
+ void *priv));
static inline struct rproc_vdev *vdev_to_rvdev(struct virtio_device *vdev)
{
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
--
To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
