On Wed, Jan 08, 2014 at 02:31:15PM -0700, Jens Axboe wrote: > On 01/08/2014 10:33 AM, Christoph Hellwig wrote: > > __smp_call_function_single already avoids multiple IPIs by internally > > queing up the items, and now also is available for non-SMP builds as > > a trivially correct stub, so there is no need to wrap it. If the > > additional lock roundtrip cause problems my patch to convert the > > generic IPI code to llists is waiting to get merged will fix it. > > Thanks Christoph, applied it.
Btw, the same should be done to the null_blk ipi completion path in theory. But given that it always tries to IPI the local CPU __smp_call_function_single turns into a simple indirect function call, so I don't really understand the point of that code path at all. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
