Re: [PATCH v9 3/7] coresight: core: Add provision for panic callbacks

On 05/06/2024 09:17, Linu Cherian wrote:

Panic callback handlers allows coresight device drivers to sync relevant trace data and trace metadata to reserved memory regions so that they can be retrieved later in the subsequent boot or in the crashdump kernel.

Signed-off-by: Linu Cherian lcherian@marvell.com Reviewed-by: James Clark james.clark@arm.com

---

Changelog from v8: Added Reviewed-by tag.

drivers/hwtracing/coresight/coresight-core.c | 37 ++++++++++++++++++++ include/linux/coresight.h | 12 +++++++ 2 files changed, 49 insertions(+)

[...]

static int __init coresight_init(void) { int ret; @@ -1377,6 +1408,10 @@ static int __init coresight_init(void) if (ret) goto exit_bus_unregister;

• /* Register function to be called for panic */
• ret = atomic_notifier_chain_register(&panic_notifier_list,

• 			     &coresight_notifier);
  

ret isn't checked here