Messages in this thread |  | | | From | "Rafael J. Wysocki" <> | | Subject | Re: [linux-pm] [RFC][PATCH] PM: Force GFP_NOIO during suspend/resume (was: Re: Memory allocations in .suspend became very unreliable) | | Date | Thu, 21 Jan 2010 22:38:47 +0100 |
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On Thursday 21 January 2010, Nigel Cunningham wrote: > Hi. > > Rafael J. Wysocki wrote: > > On Thursday 21 January 2010, KOSAKI Motohiro wrote: > >> - Ask all drivers how much they require memory before starting suspend and > >> Make enough free memory at first? > > > > That's equivalent to reworking all drivers to allocate memory before suspend > > eg. with the help of PM notifiers. Which IMHO is unrealistic. > > What's unrealistic about it? I can see that it would be a lot of work, > but unrealistic? To me, at this stage, it sounds like the ideal solution.
First, we'd need to audit the drivers which is quite a task by itself. Second, we'd need to make changes, preferably test them or find someone with suitable hardware to do that for us and propagate them upstream.
I don't really think we have the time to do it.
Rafael
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