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SubjectRe: Fix "perf tools: Synthesize GROUP_DESC feature in pipe mode" in the LT 4.14 branch
On Fri, Dec 21, 2018 at 11:57:53AM +0100, Jinpu Wang wrote:
>+cc Greg, stable
>
>Greensky, James J <james.j.greensky@intel.com> 于2018年12月21日周五 上午11:48写道:
>>
>> Commit d38d272592737ea88a20 ("perf tools: Synthesize GROUP_DESC feature in pipe mode") broke the LT 4.14 branch when using event groups in pipe-mode.
>>
>> # perf record -e '{cycles,instructions,branches}' -- sleep 4 | perf report
>> # To display the perf.data header info, please use --header/--header-only options
>> #
>> Oxd7c [0x60]: failed to process type: 80
>> Error:
>> Failed to process sample
>>
>> Commit a2015516c5c0be932a69 ("perf record: Synthesize features before events in pipe mode") is the fix. Can we get this cherry-picked and applied?

I've queued d38d272592737ea88a20 for 4.14, thank you.

--
Thanks,
Sasha

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