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From: Pavel Machek <pavel@suse.cz>
To: Peter Chubb <peter@chubb.wattle.id.au>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>,
	felipe_alfaro@linuxmail.org, mochel@osdl.org, george@mvista.com,
	johnstul@us.ibm.com, linux-kernel@vger.kernel.org
Subject: Re: [pm] fix time after suspend-to-*
Date: Wed, 29 Oct 2003 10:43:37 +0100	[thread overview]
Message-ID: <20031029094336.GB757@elf.ucw.cz> (raw)
In-Reply-To: <16286.60534.924753.349385@wombat.chubb.wattle.id.au>

Hi!

> Stephen> On Tue, 28 Oct 2003 10:32:33 +0100 Pavel Machek
> Stephen> <pavel@suse.cz> wrote:
> Stephen> We could invent a new signal whose default action is ignore
> Stephen> ... Solaris has SIGFREEZE and SIGTHAW (the comment in the
> Stephen> header file says used by CPR - whatever that is).  SIGSUSPEND
> Stephen> and SIGRESUME?
> 
> CPR -- checkpoint/restart
> 
> POSIX said to use SIGCKPT and SIGCONT (in at least *one* of the draft
> 1003.1m standards -- I've lost access to them recently, and the
> working group stopped working back in 2000)
> 
> Suspend/resume is essentially a system-wide checkpoint+restart.
> 
> Maybe use SIGCKPT and SIGCONT?  Or even SIGSTOP and SIGCONT (after
> all, you're stopping the process, then restarting it)

SIGSTOP/SIGCONT is non-starter; too many apps have problem with that.

I guess Patrick's /sbin/hotplug solution is best; implement it as
kill -SIGSTOP -1 if you want to.
								Pavel
-- 
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]

  parent reply	other threads:[~2003-10-29  9:44 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-10-22 23:33 [pm] fix time after suspend-to-* Pavel Machek
2003-10-22 23:52 ` john stultz
2003-10-23  8:17   ` Pavel Machek
2003-10-23 20:23     ` George Anzinger
2003-10-23 20:55       ` john stultz
2003-10-23 23:09         ` George Anzinger
2003-10-23 23:38           ` Pavel Machek
2003-10-24  0:29           ` john stultz
2003-10-24  0:39             ` john stultz
2003-10-24  2:10             ` George Anzinger
2003-10-24  7:48               ` Pavel Machek
2003-10-27 23:24                 ` George Anzinger
2003-10-27 23:43                   ` Patrick Mochel
2003-10-28  1:35                     ` Nigel Cunningham
2003-10-28  8:33                     ` Felipe Alfaro Solana
2003-10-28  9:32                       ` Pavel Machek
2003-10-28 11:41                         ` Stephen Rothwell
2003-10-28 12:29                           ` Pavel Machek
2003-10-28 12:39                             ` Stephen Rothwell
2003-10-28 22:23                           ` Peter Chubb
2003-10-29  2:24                             ` Valdis.Kletnieks
2003-10-29  9:43                             ` Pavel Machek [this message]
2003-10-28 14:30                         ` Felipe Alfaro Solana
2003-10-28 17:28                           ` Pavel Machek
2003-10-28 20:16                             ` Felipe Alfaro Solana
2003-10-28 21:13                               ` Andreas Schwab
2003-10-28 21:29                               ` George Anzinger
2003-10-29  9:38                               ` Pavel Machek
2003-10-29 11:28                                 ` Gabriel Paubert
2003-10-29 11:55                                   ` PCI Bus error 6290 or 0290 Remus
2003-10-29 12:40                                     ` Meelis Roos
2003-10-29 12:49                                       ` Remus
2003-10-29 20:42                                 ` [pm] fix time after suspend-to-* George Anzinger
2003-10-30  9:02                                   ` Pavel Machek
2003-10-28 15:21                         ` Valdis.Kletnieks
2003-10-28 17:26                           ` Pavel Machek
2003-10-28 18:20                       ` Patrick Mochel
2003-10-28 19:36                         ` Valdis.Kletnieks
2003-10-28 20:19                         ` Felipe Alfaro Solana
2003-10-24  7:49             ` Pavel Machek
2003-10-23 23:40       ` Pavel Machek
2003-10-27 22:43         ` Patrick Mochel
2003-10-22 23:57 ` Måns Rullgård
2003-10-29  8:20 Mathias Fröhlich

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