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Fernando Guzman Lugo authored
Allow low-level remoteproc drivers to report rproc crashes by exporting a new rproc_report_crash() function (invoking this from non-rproc drivers is probably wrong, and should be carefully scrutinized if ever needed). rproc_report_crash() can be called from any context; it offloads the tasks of handling the crash to a separate thread. Handling the crash from a separate thread is helpful because: - Ability to call invoke rproc_report_crash() from atomic context, due to the fact that many crashes trigger an interrupt, so this function can be called directly from ISR context. - Avoiding deadlocks which could happen if rproc_report_crash() is called from a function which indirectly holds the rproc lock. Handling the crash might involve: - Remoteproc register dump - Remoteproc stack dump - Remoteproc core dump - Saving Remoteproc traces so they can be read after the crash - Reseting the remoteproc in order to make it functional again ...
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