Date: Sat, 7 Oct 2006 11:02:12 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-hackers@freebsd.org Subject: Keyboard system and Giant Message-ID: <200610071102.13467.hselasky@c2i.net>
next in thread | raw e-mail | index | archive | help
Hi, Does someone here have the overview over the keyboard system? I see that at least printf calls into the keyboard system without holding Giant, which did cause a panic in the new USB keyboard driver. This happens when the kernel prints text to the screen in text-mode, and printf wants to turn off the scroll lock led. Now I have found a second place where the keyboard system is called without Giant, and this happens when I switch from X11 to text-mode using CTRL+ALT+F1 for example. Then I get a panic, but I cannot see where. Does someone here understand that process? What should I do? Should I just lock Giant in ukbd if it is not locked already? This might cause locking order reversals. The obvious solution to me is to get the keyboard layer out of Giant. Is anyone working on that? --HPS
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200610071102.13467.hselasky>