On 2/27/13 10:38 PM, Eric Sandeen wrote: ... > re-cc'ing xfs list > > So I used pahole to look at all structs, objdump -d to disassemble, > and md5sum'd the results to see what's different. > > pi@raspberrypi ~ $ md5sum cross/*.dis cross/*.pahole native/*.dis native/*.pahole > > <manual sort> > > c0abd80c3bf049db5e1909fd851261cc cross/xfs-O1-g.ko.pahole > c0abd80c3bf049db5e1909fd851261cc cross/xfs-O2-g.ko.pahole > c0abd80c3bf049db5e1909fd851261cc cross/xfs-Os-g.ko.pahole > c0abd80c3bf049db5e1909fd851261cc native/xfs-O1-g.ko.pahole > c0abd80c3bf049db5e1909fd851261cc native/xfs-O2-g.ko.pahole > c0abd80c3bf049db5e1909fd851261cc native/xfs-Os-g.ko.pahole > > so all structures look identical, good - but: > > while disassembly of these two modules match: > > d76f6ebf4d8a1b9f786facefbcf16f69 cross/xfs-O1-g.ko.dis > d76f6ebf4d8a1b9f786facefbcf16f69 native/xfs-O1-g.ko.dis > > do you see the problem w/ the cross-compiled xfs-O1-g.ko as well? > > the others differ: > > 349f3490a49f2ce539c2b058914f64f0 native/xfs-Os-g.ko.dis > 91c8e8230774808b538c21a83106a5d7 cross/xfs-Os-g.ko.dis > > 649338e1b8eeed6a294504fc76a39cb0 native/xfs-O2-g.ko.dis > e52c2a48277326c313bba76aa0b33ab7 cross/xfs-O2-g.ko.dis > > The diff of the disassembly of the others is huge, hard to > know where to start just yet. Need an objdump mode that only > shows function-relative addresses or something to cut down > on the noise. Could you try the same, to isolate the differences: objdump -d all of the *.o files for, say, the -O2 build, md5sum & compare, and see which ones differ? -Eric _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
