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Message-ID: <55E5612F.4030800@intel.com>
Date: Tue, 01 Sep 2015 11:26:23 +0300
From: Adrian Hunter <adrian.hunter@intel.com>
Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki,
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To: Stephane Eranian <eranian@google.com>, LKML <linux-kernel@vger.kernel.org>
CC: Arnaldo Carvalho de Melo <acme@redhat.com>, Jiri Olsa <jolsa@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>, "mingo@elte.hu" <mingo@elte.hu>,
        Namhyung Kim <namhyung@kernel.org>
Subject: Re: [BUG] perf: does not compile on ARM because of Intel PT code
References: <CABPqkBR_zU6QYDq0Gbgf8QirkBW5-HDONujf2KHKLtGwC07cOQ@mail.gmail.com>
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On 01/09/15 11:26, Stephane Eranian wrote:
> Hi,
> 
> If you compile tip.git on ARM32 (or ARM64, I bet) you compile link time errors:
> 
> libperf.a(libperf-in.o): In function `intel_pt_synth_branch_sample':
> /home/ubuntu/perfmon/linux/tools/perf/util/intel-pt.c:899: undefined
> reference to `tsc_to_perf_time'
> libperf.a(libperf-in.o): In function `intel_pt_synth_transaction_sample':
> /home/ubuntu/perfmon/linux/tools/perf/util/intel-pt.c:992: undefined
> reference to `tsc_to_perf_time'
> libperf.a(libperf-in.o): In function `intel_pt_synth_instruction_sample':
> /home/ubuntu/perfmon/linux/tools/perf/util/intel-pt.c:943: undefined
> reference to `tsc_to_perf_time'
> libperf.a(libperf-in.o): In function `intel_pt_process_event':
> /home/ubuntu/perfmon/linux/tools/perf/util/intel-pt.c:1484: undefined
> reference to `perf_time_to_tsc'
> libperf.a(libperf-in.o): In function `intel_pt_process_itrace_start':
> /home/ubuntu/perfmon/linux/tools/perf/util/intel-pt.c:1455: undefined
> reference to `perf_time_to_tsc'
> libperf.a(libperf-in.o): In function `intel_pt_process_switch':
> /home/ubuntu/perfmon/linux/tools/perf/util/intel-pt.c:1405: undefined
> reference to `perf_time_to_tsc'
> /home/ubuntu/perfmon/linux/tools/perf/util/intel-pt.c:1427: undefined
> reference to `perf_time_to_tsc'
> libperf.a(libperf-in.o): In function `intel_bts_process_event':
> /home/ubuntu/perfmon/linux/tools/perf/util/intel-bts.c:614: undefined
> reference to `perf_time_to_tsc'
> 
> That's because if AUXTRACE is detected, it pulls in x86 specific stuff
> like intel-pt. This should
> be decoupled.

Ingo just pulled the fix for that a moment ago.  Look for "perf tools: Fix
build on powerpc broken by pt/bts"