Hi Jim. On Tuesday 07 February 2006 13:01, Jim Crilly wrote: > On 02/06/06 08:19:02PM -0500, Lee Revell wrote: > > On Mon, 2006-02-06 at 19:59 -0500, Jim Crilly wrote: > > > I guess reasonable is a subjective term. For instance, I've seen > > > quite a few people vehemently against adding new ioctls to the > > > kernel and yet you'll be adding quite a few for /dev/snapshot. I'm > > > just of the same mind as Nigel in that it makes the most sense to me > > > that the majority of the suspend/hibernation process to be in the > > > kernel. > > > > No one is saying that ANY new ioctls are bad, just that the KISS > > principle of engineering dictates that it's bad design to use ioctls > > where a simple read/write to a sysfs file will do. > > I understand that, but shouldn't the KISS principle also be applied to > the user interface of a feature? As it stands it looks like Suspend2 > is going to be a lot simpler for users to configure and get right than > uswsusp. As long as you have Suspend2 enabled in the kernel it 'just > works', even if you don't have the userland UI it'll still suspend and > resume just without the progress bars. There is still some room for > error with things like forgetting to enable the swap writer and then > attempting to suspend to a swap device or making lzf a module and > forgetting to load it before resuming from a compressed image, but those > are no worse than any other kernel option. > > With uswsusp it'll be more flexible in that you'll be able to use any > userland process or library to transform the image before storing it, > but the suspend and resume processes are going to be a lot more > complicated. For instance, how are you going to tell the kernel that you > need the uswsusp UI binary, /bin/gzip and /usr/bin/gpg to run after the > rest of userland has been frozen? As I understand it, with uswsusp, all the functionality will be compiled into one monolithic binary, which you'll also need to put in your initrd or initramfs. Hope that helps. Nigel -- See our web page for Howtos, FAQs, the Wiki and mailing list info. http://www.suspend2.net IRC: #suspend2 on Freenode
Attachment:
pgpWCTuHm4vd5.pgp
Description: PGP signature
- References:
- [ 00/10] [Suspend2] Modules support.
- From: Nigel Cunningham <[email protected]>
- Re: Which is simpler? (Was Re: [Suspend2-devel] Re: [ 00/10] [Suspend2] Modules support.)
- From: Lee Revell <[email protected]>
- Re: Which is simpler? (Was Re: [Suspend2-devel] Re: [ 00/10] [Suspend2] Modules support.)
- From: Jim Crilly <[email protected]>
- [ 00/10] [Suspend2] Modules support.
- Prev by Date: [PATCH] spi: Add PXA2xx SSP SPI Driver
- Next by Date: Re: [PATCH] mm: implement swap prefetching
- Previous by thread: Re: Which is simpler? (Was Re: [Suspend2-devel] Re: [ 00/10] [Suspend2] Modules support.)
- Next by thread: Re: Which is simpler? (Was Re: [Suspend2-devel] Re: [ 00/10] [Suspend2] Modules support.)
- Index(es):
 |