On 8/16/19 1:12 AM, Greg KH wrote: > On Fri, Aug 16, 2019 at 10:49:35AM +0800, Ming Lei wrote: >> On Thu, Aug 15, 2019 at 11:10:35PM +0000, Ray, Mark C (Global Solutions Engineering (GSE)) wrote: >>> Hi Ming, >>> >>> In the customer case, the cpu_list file was not needed. It was just part of a SAP Hana script to collect all the block device data (similar to sosreport). So they were just dumping everything, and it picks up the mq-related files. >>> >>> I know with IRQs, we have bitmaps/mask, and can represent the list such as "0-27", without listing every CPU. I'm sure there's lots of options to address this, and getting rid of the cpu_list is one of them. >> >> Indeed, same with several attributes under /sys/devices/system/cpu/, >> actually we can use cpumap_print_to_pagebuf() to print the CPUs. > > And that is changing the format of the file, which means it is obvious > no one is using it, so just please delete the thing. IFF that patch was valid, then yes, it follows that you could delete it. But that's not a given. -- Jens Axboe
