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Date: Tue, 5 Jun 2007 10:32:21 -0500 From: Matt Mackall <mpm@...enic.com> To: Rusty Russell <rusty@...tcorp.com.au> Cc: Andrew Morton <akpm@...ux-foundation.org>, lkml - Kernel Mailing List <linux-kernel@...r.kernel.org>, bzolnier@...il.com Subject: Re: [PATCH 3/6] lguest suppress IDE probing On Wed, Jun 06, 2007 at 12:58:03AM +1000, Rusty Russell wrote: > The IDE probe is the slowest part of boot: by suppressing it we cut > boot from from 3 seconds to half a second. > > AFAICT, the commandline is the easiest way to suppress the probing. Switching to libata accomplishes the same and isn't quite as ugly. I'd just drop this patch and put a note about it in lguest.txt, as libata seems to be the fashionable thing to do these days. > Signed-off-by: Rusty Russell <rusty@...tcorp.com.au> > --- > drivers/lguest/lguest.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > =================================================================== > --- a/drivers/lguest/lguest.c > +++ b/drivers/lguest/lguest.c > @@ -605,6 +605,12 @@ __init void lguest_init(void *boot) > acpi_disabled = 1; > acpi_ht = 0; > #endif > +#ifdef CONFIG_BLK_DEV_IDE > + /* Saves three seconds off boot time. */ > + strcat(boot_command_line, > + " ide0=noprobe ide1=noprobe ide2=noprobe" > + " ide3=noprobe ide4=noprobe ide5=noprobe"); > +#endif > > add_preferred_console("hvc", 0, NULL); > > -- Mathematics is the supreme nostalgia of our time. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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