>> What's the lifetime of that record? >> > > The lifetime is contained to the cxl_cper_post_envent() which does not > block. The kfifo_put() copies the data to a cxl specific record to be > used by the CXL thread for processing. > >> >> Can it be re-used/overwritten >> before that other kernel thread gets around to looking at it? > > Yes because the CXL kernel thread has its own copy in the kfifo. Ira, Tracking down the call chain, doubly safe. You first copy that record to a local variable in cxl_cper_post_event() and then kfifo_put() will copy that copy into another place for processing. That was my only concern. Reviewed-by: Tony Luck <tony.luck@xxxxxxxxx> -Tony
