On Thu, Mar 16, 2017 at 12:46:00PM -0300, Arnaldo Carvalho de Melo wrote:

Em Thu, Mar 16, 2017 at 04:17:04PM +0100, Jiri Olsa escreveu:

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On Thu, Mar 16, 2017 at 12:03:38PM -0300, Arnaldo Carvalho de Melo wrote:

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Em Thu, Mar 16, 2017 at 03:39:36PM +0100, Arnd Bergmann escreveu:

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On Thu, Mar 16, 2017 at 2:59 PM, Jiri Olsa [off-list ref] wrote:

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On Thu, Mar 16, 2017 at 02:44:45PM +0100, Arnd Bergmann wrote:

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On Thu, Mar 16, 2017 at 1:49 PM, Jiri Olsa [off-list ref] wrote:
It's probably another variation of this bug, but the commit you cite got merged
into 4.10-rc1, while the problem still persists in mainline (4.11-rc2+).

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the problem is in objtool build right? the fix was for perf build

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Ah, got it. Yes, that must be it then. I supposed we coul duplicate what you
did for perf in objtool, but a cleaner way would be to generalize it for all of
tools/, right?

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right, the thing is that objtool is standalone application like perf,
and before their builds can go the 'fixdep' needs to be there.. that's
a condition to use the tools/build framework

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not sure how offensive it'd be to current Makefiles if we come with some
generalized code to do that.. I'll think about it, but I think we might
be better of the way we are now

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Humm, can't we have just one fixdep?

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we have.. it's just the matter who will build it first ;-)

Ok, I haven't said "can't we have just one fixdep?", what I really said
was "can't we make sure we don't have races building it?" ;-)

I hope so ;-) but so far I cannot think of anything better than what was introduced in:
  abb26210a395 perf tools: Force fixdep compilation at the start of the build

jirka