On Tue, 12 Aug 2008 08:39:03 +0100 Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote: > On Mon, 11 Aug 2008 15:36:41 -0700 > Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote: > > > > > From: Kristen Accardi <kristen.c.accardi@xxxxxxxxx> > > Subject: [PATCH] libata: Add a module parameter to skip probing of > > specific ports > > > > Port probing by libata can easily take 10% or more of the kernel > > boot time (2%+ of total). For cases where one knows there is nothing > > connected to certain ports (for example on netbooks) this is a waste > > of boot time. > > > > This patch adds a module parameter that allows the admin to specify > > to skip ports (specified by a bitmask) and recoup this boot time. > > This capability is potentially also useful to get systems to boot > > for cases where port-probing on a certain ports causes crashes. > > > > A follow-on patch will add the capability to use DMI identification > > to automate this for certain known systems. > > What happens if I plug in an additional libata using device ? on an eeepc ? ;) at least for the command line option the owner (or whoever sets up grub) knows the order and could adjust. For the DMI patch you do have a point. > What > defines the probe order here particularly as people are pushing for > parallel probing of multiple devices. the patches I'm pushing for this don't change probe order; that has been tried before and wasn't a great success. -- If you want to reach me at my work email, use arjan@xxxxxxxxxxxxxxx For development, discussion and tips for power savings, visit http://www.lesswatts.org -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
