On Tue, Oct 15 2013, Shaohua Li wrote: > Hi, > blk-mq and percpu_ida use similar algorithm to manage tags. The difference > is when a cpu can't allocate tags, blk-mq will use ipi to purge remote cpu > cache, while percpu-ida directly purges remote cpu cache. In practice, the > percpu-ida approach is much faster when we can't allocate enough for percpu > cache. > > This patch makes blk-mq use percpu_ida to manage tags, this avoids some > duplicate code and has better performance as I mentioned. To test the patches, > rebase blk-mq tree to latest kernel first. > > The v2 patch updated some log descriptions, fixed one issue Kent pointed out > and added performance data.
Thanks, I've rebased it to 3.12-rc5 and applied the series. -- Jens Axboe -- 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/
