On Wed, Jul 12, 2017 at 10:57:37AM -0600, Jens Axboe wrote: > On 07/12/2017 10:54 AM, weiping zhang wrote: > > A mapping show as following: > > > > hctx cpus > > hctx0 0 1 > > hctx1 2 > > hctx2 3 > > hctx3 4 5 > > We already have that information in the /sys/block/<dev>/mq/X/cpu_list > > where X is the hardware queue number. Why do we need it in debugfs as > well, presented differently? this arribute give a more obviously showing, only by 1 "cat" command. /sys/bloc/<dev>/mq/X/cpu_list not easy get mapping for all hctx by 1 command. also /sys/kernel/debug/block/xxx/hctxN/cpuX can export that info, but these two methods both not obviously.
