Messages in this thread | | | Date | Thu, 12 Sep 2013 11:51:34 -0700 | Subject | Re: [GIT PULL] perf fixes | From | Linus Torvalds <> |
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On Thu, Sep 12, 2013 at 11:10 AM, Linus Torvalds <torvalds@linux-foundation.org> wrote: > > But at least the "make install" problem is repeatable, though.
And now this new problem is repeatable too:
# On a fully built kernel tree perf record -g -e cycles:pp make -j
results in
[ perf record: Woken up 27 times to write data ] [ perf record: Captured and wrote 7.980 MB perf.data (~348659 samples) ] 0x1b4e0 [0]: failed to process type: -1970637019
where that number changes randomly, ie I get
0x28dc58 [0]: failed to process type: 99257493 0x4100 [0]: failed to process type: -1144359783 0x29050 [0]: failed to process type: -972156963 ..
looks like perhaps some uninitialized variable somewhere?
Recording performance profiles of other (simpler?) loads still seems to work. So it's something about that "make -j" that makes it crap out (note that the tree is fully built, so not a lot actually gets *done*, and the thing only takes a few seconds)
Linus
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