Re: [PATCH] uio: Replace mutex info_lock with percpu_ref to improve performance

2022-02-09 Thread Guixin Liu
在 2022/2/9 15:40, Christoph Hellwig 写道: On Tue, Feb 08, 2022 at 03:19:20PM +0800, Guixin Liu wrote: This patch includes a modification to repace mutex info_lock with percpu_ref, in order to improve uio performance. What performance critical use case do you have for uio? Everyone really

Re: [PATCH] uio: Replace mutex info_lock with percpu_ref to improve performance

2022-02-08 Thread Christoph Hellwig
On Tue, Feb 08, 2022 at 03:19:20PM +0800, Guixin Liu wrote: > This patch includes a modification to repace mutex info_lock with > percpu_ref, in order to improve uio performance. What performance critical use case do you have for uio? Everyone really should be using vfio these days due to the