* Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > #ifndef trigger_all_cpu_backtrace > +#ifdef CONFIG_SMP > +#warning This architecture is missing a trigger_all_cpu_backtrace() implementation > +#endif > #define trigger_all_cpu_backtrace() do { } while (0) > #endif I think a better solution will be to make this function return 1 if it generated a backtrace. That way we can fall back to the generic schedule_work based codepath. Albeit the best and cleanest solution would be to implement a workqueue based trigger_all_cpu_backtrace() __weak variant and throw away the workqueue bits from sysrq.c. Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html