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remoteproc: Add mechanism for custom dump function assignment 

This patch adds a mechanism for assigning each rproc dump segment with
a custom dump function and private data. The dump function is to be
called for each rproc segment during coredump if assigned.

Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
[bjorn: reordred arguments to rproc_coredump_add_custom_segment()]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Sibi Sankar 2018-10-17 19:25:24 +05:30 committed by Bjorn Andersson
parent 3952105df4
commit ab8f873bb9
2 changed files with 44 additions and 0 deletions
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38
drivers/remoteproc/remoteproc_core.c
View File

@ -1446,6 +1446,44 @@ 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 custom coredump segment
* @rproc: handle of a remote processor
* @da: device address
* @size: size of segment
* @dumpfn: custom dump function called for each segment during coredump
* @priv: private data
*
* Add device memory to the list of segments to be included in the coredump
* and associate the segment with the given custom dump function and private
* data.
*
* 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,
struct rproc_dump_segment *segment,
void *dest),
void *priv)
{
struct rproc_dump_segment *segment;
segment = kzalloc(sizeof(*segment), GFP_KERNEL);
if (!segment)
return -ENOMEM;
segment->da = da;
segment->size = size;
segment->priv = priv;
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

6
include/linux/remoteproc.h
View File

@ -592,6 +592,12 @@ 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,
struct rproc_dump_segment *segment,
void *dest),
void *priv);
static inline struct rproc_vdev *vdev_to_rvdev(struct virtio_device *vdev)
{