On Fri, Aug 29, 2014 at 02:01:00PM +0200, David Herrmann wrote: > There is no reason to use a heavy mutex for idr protection. Use a spinlock > and make idr-allocation use idr_preload(). > > This patch also makes mode-object lookup irq-save, in case you ever wanna > lookup modeset objects from interrupts. This is just a side-effect of > avoiding a mutex.
I don't think that's entirely accurate. idr_preload(GFP_KERNEL) might sleep since GFP_KERNEL & __GFP_WAIT != 0. Thierry -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 819 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20140829/f47786d1/attachment.sig>
