Cc-ing Steven https://lore.kernel.org/lkml/20190207124635.3885-1-mpe@xxxxxxxxxxxxxx/T/#u On (02/07/19 23:46), Michael Ellerman wrote: > Arch code can set a "dump stack arch description string" which is > displayed with oops output to describe the hardware platform. > > It is useful to initialise this as early as possible, so that an early > oops will have the hardware description. > > However in practice we discover the hardware platform in stages, so it > would be useful to be able to incrementally fill in the hardware > description as we discover it. > > This patch adds that ability, by creating dump_stack_add_arch_desc(). > > If there is no existing string it behaves exactly like > dump_stack_set_arch_desc(). However if there is an existing string it > appends to it, with a leading space. > > This makes it easy to call it multiple times from different parts of the > code and get a reasonable looking result. > > Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> You probably can have a __init buffer somewhere in ppc code, append data to it, step by step, and call dump_stack_set_arch_desc() all the time. But no real objections; dump_stack_add_arch_desc() can do. FWIW, Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx> -ss
