history/kernel/power, branch master

[PATCH] swsusp: kill swsusp_restore

2005-03-28T11:43:28Z

This kills swsusp_resume; it should be arch-neutral but some i386 code sneaked in. And arch-specific code is better done in assembly anyway. Plus it fixes memory leaks in error paths. Signed-off-by: Rafael J. Wysocki Signed-off-by: Pavel Machek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] swsusp: small updates

2005-03-28T11:43:12Z

This kills unused macro and write-only variable, and adds messages where something goes wrong with suspending devices. Signed-off-by: Pavel Machek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] Allow admin to enable only some of the Magic-Sysrq functions

2005-03-13T08:25:50Z

Allow admin to enable only some of the Magic-Sysrq functions. This allows admin to disable sysrq functions he considers dangerous (e.g. sending kill signal, remounting fs RO) while keeping the possibility to use the others (e.g. debug deadlocks by dumps of processes etc.). Signed-off-by: Jan Kara Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] Subject: swsusp: do not provoke emergency disk shutdowns

2005-03-13T08:25:32Z

In platform swsusp mode, we were forgetting to spin disks down, leading to ugly emergency shutdown. This synchronizes platform method with other methods and actually helps. Signed-off-by: Pavel Machek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] swsusp: enable resume from initrd

2005-03-13T08:25:15Z

From: When using a fully modularized kernel it is necessary to activate resume manually as the device node might not be available during kernel init. This patch implements a new sysfs attribute '/sys/power/resume' which allows for manual activation of software resume. When read from it prints the configured resume device in 'major:minor' format. When written to it expects a device in 'major:minor' format. This device is then checked for a suspended image and resume is started if a valid image is found. The original functionality is left in place. It should be used from initramfs, or with care. Signed-off-by: Hannes Reinecke Signed-off-by: Pavel Machek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] swsusp: use non-contiguous memory on resume

2005-03-13T08:24:40Z

The following patch is designed to fix a problem in the current implementation of swsusp in mainline kernels. Namely, swsusp uses an array of page backup entries (aka pagedir) to store pointers to memory pages that must be saved during suspend and restored during resume. Unfortunately, the pagedir has to be located in a contiguous chunk of memory and it sometimes turns out that an 8-order or even 9-order allocation is needed for this purpose. It sometimes is impossible to get such an allocation and swsusp may fail during either suspend or resume due to the lack of memory, although theoretically there is enough free memory for it to succeed. Moreover, swsusp is more likely to fail for this reason during resume, which means that it may fail during resume after a successful suspend (this actually has happened for some people, including me :-)) and this, potentially, may lead to the loss of data. The problem is fixed by replacing the pagedir with a linklist so that high-order memory allocations are avoided (the patches make swsusp use only 0-order allocations). Unfortunately this means that it's necessary to change assembly routines used to restore the image after it's been loaded from swap so that they walk the list instead of walking the array. This patch makes swsusp allocate only individual pages during resume. it contains the necessary changes to the assembly routines etc. for i386 and x86-64. Signed-off-by: Rafael J. Wysocki Signed-off-by: Pavel Machek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] Make lots of things static

2005-03-12T00:40:56Z

This is a megarollup of ~60 patches which give various things static scope. Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] remove barrier() in software_resume()

2005-03-10T00:31:32Z

This patch removes the redundant compiler barrier. As Linus ever said "The mb() should make sure that gcc cannot move things around...". Signed-off-by: Coywolf Qi Hunt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] swsusp: do not use higher order memory allocations on suspend

2005-03-08T01:41:44Z

This is patch from Rafael, it eliminates order-5 (or worse) allocations during suspend. I did few style/whitespace modifications. It was tested by me, Rafael, and Stefan from SuSE. Signed-off-by: Rafael J. Wysocki Signed-off-by: Pavel Machek Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] Enable swsusp on SMP machines

2005-01-25T12:40:02Z

This enables swsusp on SMP machines. It should be working in 2.6.10, already (but you may need noapic in 2.6.10). Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds