Re: [PATCH] blk: optimize blk_trace macros for cgroup case PING..

2015-04-17 Thread Jens Axboe
On 04/17/2015 05:23 AM, Dmitry Monakhov wrote: Hi Jens, do you have any objections against this patch? Please let me know if you have any and I'll fix it. I think it looks fine, and it's a nice win! So good catch. I'll queue it up for inclusion later in this cycle. -- Jens Axboe -- To unsu

Re: [PATCH] blk: optimize blk_trace macros for cgroup case PING..

2015-04-17 Thread Dmitry Monakhov
Hi Jens, do you have any objections against this patch? Please let me know if you have any and I'll fix it. Dmitry Monakhov writes: > Usually blk_trace is not active, but cfq_log_xxx macros unconditionally > prepare cgroup path via blkg_path() which is suboptimal. This provoke > significant perf