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Date: Wed, 22 Aug 2018 16:56:10 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Sasha Levin <Alexander.Levin@microsoft.com>,
        Guenter Roeck <linux@roeck-us.net>
Cc: stable <stable@vger.kernel.org>
Subject: Re: Build failures in -stable queues
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On Wed, Aug 22, 2018 at 06:41:50AM -0700, Guenter Roeck wrote:
> 
> v4.9.y, v4.14.y:
> 
> Building i386:tools/perf ... failed
> Building x86_64:tools/perf ... failed
> --------------
> Error log:
>   PERF_VERSION = 4.9.123.g5175d5
> tests/parse-events.c: In function ‘test_event’:
> tests/parse-events.c:1681:3: error: implicit declaration of function ‘parse_events_print_error’ [-Werror=implicit-function-declaration]
>    parse_events_print_error(&err, e->name);
>    ^
> tests/parse-events.c:1681:3: error: nested extern declaration of ‘parse_events_print_error’

Thanks, I've fixed this one.

Sasha, it would be good to add perf to your build tests so this doesn't
happen again.

greg k-h