On Fri, Jul 18, 2014 at 04:08:34PM -0400, Tejun Heo wrote: > From 0a4bd997ba9725565883c688d7dcee8264abf71c Mon Sep 17 00:00:00 2001 > From: Tejun Heo <t...@kernel.org> > Date: Fri, 18 Jul 2014 16:07:14 -0400 > > throtl_pd_init() is called under the queue lock but needs to allocate > the percpu stats area. This is currently handled by queueing it on a > list and scheduling a work item to allocate and fill the percpu stats > area. Now that perpcu_pool is available, this custom mechanism can be > replaced. > > Add tg_stats_cpu_pool and implement tg_ensure_stats_cpu() which tries > to make sure that tg->stats_cpu is populated to replace the custom > async alloc mechanism. As percpu_pool allocation can fail, > tg_ensure_stats_cpu() is invoked whenever ->stats_cpu is about to be > accessed. This is similar to the way code was structured before as > the custom async alloc could take arbitrary amount of time and each > access should verify that ->stats_cpu is populated. > > This simplifies the code. There shouldn't be noticeable functional > difference. > > Signed-off-by: Tejun Heo <t...@kernel.org> > Cc: Vivek Goyal <vgo...@redhat.com> > Cc: Jens Axboe <ax...@kernel.dk>
Jens, can I route this patch through percpu tree? Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
