Messages in this thread |  | | Date | Wed, 23 Nov 2005 10:12:58 -0500 | From | Jon Smirl <> | Subject | Re: Christmas list for the kernel |
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On 11/23/05, Russell King <rmk+lkml@arm.linux.org.uk> wrote: > > Plus I have 64 tty devices. Couldn't the tty devices be created > > dynamically as they are consumed? Same for the loop and ram devices? > > You do realise that the dynamic device creation for those 64 console > devices is done via the console device being _opened_ by userspace? > > Hence, if the device doesn't exist in userspace, it can't be created > for userspace to open it to create the device via udev. Have you > noticed a catch-22 with that statement?
Couldn't we create tty0-3 and then when one of those gets opened, create tty4, and so on? Then there would always be two or three more tty devices than there are open tty devices.
> > Note that with tty devices, the tty layer has to be told the number > of devices you want to support when you first register your driver. > You're fixed to that maximum number from that point on, until you > unregister *all* your ports and driver. > > -- > Russell King > Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ > maintainer of: 2.6 Serial core >
-- Jon Smirl jonsmirl@gmail.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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