On 11/07/2018 03:48 PM, Michal Hocko wrote: > From: Michal Hocko <mhocko@xxxxxxxx> > > The memory offlining failure reporting is inconsistent and insufficient. > Some error paths simply do not report the failure to the log at all. > When we do report there are no details about the reason of the failure > and there are several of them which makes memory offlining failures > hard to debug. > > Make sure that the > memory offlining [mem %#010llx-%#010llx] failed > message is printed for all failures and also provide a short textual > reason for the failure e.g. > > [ 1984.506184] rac1 kernel: memory offlining [mem 0x82600000000-0x8267fffffff] failed due to signal backoff > > this tells us that the offlining has failed because of a signal pending > aka user intervention. > > Signed-off-by: Michal Hocko <mhocko@xxxxxxxx> It might help to enumerate these failure reason strings and use macros.
