remoteproc: core: Add coredump ops to remoteproc

Commit Message

Siddharth Gupta July 31, 2020, 10:17 p.m. UTC

Each remoteproc might have different requirements for coredumps and might
want to choose the type of dumps it wants to collect. This change allows
remoteproc drivers to specify their own custom dump function to be executed
in place of rproc_coredump. If the coredump op is not specified by the
remoteproc driver it will be set to rproc_coredump by default.

Signed-off-by: Siddharth Gupta <[e-mail]>
---
 drivers/remoteproc/remoteproc_core.c | 6 +++++-
 include/linux/remoteproc.h           | 2 ++
 2 files changed, 7 insertions(+), 1 deletion(-)

Patch

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 277d3bf..8ea61b0 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1681,7 +1681,8 @@  int rproc_trigger_recovery(struct rproc *rproc)
 		goto unlock_mutex;
 
 	/* generate coredump */
-	rproc_coredump(rproc);
+	if (rproc->ops->coredump)
+		rproc->ops->coredump(rproc);
 
 	/* load firmware */
 	ret = request_firmware(&firmware_p, rproc->firmware, dev);
@@ -2098,6 +2099,9 @@  static int rproc_alloc_ops(struct rproc *rproc, const struct rproc_ops *ops)
 	if (!rproc->ops)
 		return -ENOMEM;
 
+	if (rproc->ops->coredump)
+		rproc->ops->coredump = rproc_coredump;
+
 	if (rproc->ops->load)
 		return 0;
 
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 0e8d2ff..d22c33d 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -374,6 +374,7 @@  enum rsc_handling_status {
  * @get_boot_addr:	get boot address to entry point specified in firmware
  * @panic:	optional callback to react to system panic, core will delay
  *		panic at least the returned number of milliseconds
+ * @coredump:	do coredump for the specified remoteproc
  */
 struct rproc_ops {
 	int (*prepare)(struct rproc *rproc);
@@ -392,6 +393,7 @@  struct rproc_ops {
 	int (*sanity_check)(struct rproc *rproc, const struct firmware *fw);
 	u64 (*get_boot_addr)(struct rproc *rproc, const struct firmware *fw);
 	unsigned long (*panic)(struct rproc *rproc);
+	void (*coredump)(struct rproc *rproc);
 };
 
 /**