----- "Tejun Heo" <tj at kernel.org> wrote: > Hello, > > On 08/30/2010 05:42 AM, CAI Qian wrote: > >> Hmmm... I can't reproduce it here. I wonder what the difference > is. > >> Can you please trigger sysrq-t after the boot is hung and post the > >> result? > > Sysrq keys did not work at this early stage of booting for me even > > adding sysrq_always_enabled. > > I see. I'll prepare a debug patch which tries to catch long > execution > delays in workqueue but in the meantime can you please turn on > hangcheck timer and see whether it triggers after the kernel hangs > during boot? Can't see any difference with hangcheck timer enabled. > Thanks. > > -- > tejun > > _______________________________________________ > kexec mailing list > kexec at lists.infradead.org > http://lists.infradead.org/mailman/listinfo/kexec
