Messages in this thread | | | Date | Fri, 26 Jun 2015 09:27:02 -0400 | From | Vivek Goyal <> | Subject | Re: [PATCH 2/6] blkcg: add blkg_[rw]stat->aux_cnt and replace cfq_group->dead_stats with it |
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On Thu, Jun 25, 2015 at 05:38:53PM -0400, Tejun Heo wrote:
[..] > It's planned that the core stats will be moved to blkcg_gq, so we want > to move the mechanism for keeping track of the stats of dead children > from cfq to blkcg core. This patch adds blkg_[rw]stat->aux_cnt which > are atomic64_t's keeping track of auxiliary counts which are excluded > when reading local counts but included for recursive.
Hi Tejun,
So aux_cnt is atomic64_t as updation is not the hot path hence there is not much value in keeping it as per cpu?
Thanks Vivek
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