On Wednesday 23 September 2009, Karol Lewandowski wrote: > On Fri, Sep 18, 2009 at 12:27:37AM +0200, Rafael J. Wysocki wrote: > > On Thursday 17 September 2009, Graham, David wrote: > > > Rafael J. Wysocki wrote: > > > > I guess the driver releases its DMA buffer during suspend and attempts > > > > to > > > > allocate it back on resume, which is not really smart (if that really > > > > is the > > > > case). > > > > Yes, we free a 70KB block (0x80 by 0x230 bytes) on suspend and > > > reallocate on resume, and so that's an Order 5 request. It looks > > > symmetric, and hasn't changed for years. I don't think we are leaking > > > memory, which points back to that the memory is too fragmented to > > > satisfy the request. > > > > > > I also concur that Rafael's commit 6905b1f1 shouldn't change the logic > > > in the driver for systems with e100 (like yours Karol) that could > > > already sleep, and I don't see anything else in the driver that looks to > > > be relevant. I'm expecting that your test result without commit 6905b1f1 > > > will still show the problem. > > > > > > So I wonder if this new issue may be triggered by some other change in > > > the memory subsystem ? > > > I think so. There have been reports about order 2 allocations failing for > > 2.6.31, so it looks like newer kernels are more likely to expose such > > problems. > > > > Adding linux-mm to the CC list. > > I've hit this bug 2 times since my last email. Is there anything I > could do? > > Maybe I should revert following commits (chosen somewhat randomly)? > > 1. 49255c619fbd482d704289b5eb2795f8e3b7ff2e > > 2. dd5d241ea955006122d76af88af87de73fec25b4 - alters changes made by > commit above > > Any ideas?
You can try that IMO. Best, Rafael ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ E1000-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/e1000-devel
