Commit 08d5204a authored Sep 16, 2016 by Mathieu Poirier Committed by Arnaldo Carvalho de Melo Sep 22, 2016

perf tools: Confine __get_cpuid() to x86 architecture



The __get_cpuid() test is only valid when compiling for x86.  When
compiling for other architectures like ARM/ARM64 the test fails event if
the functionality is not required.

This patch isolate the build-in feature check to x86 platform, allowing
the compilation and usage of PMUs that use the AUXTRACE infrastructure
on other architectures (i.e ARM CoreSight).

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1474041004-13956-2-git-send-email-mathieu.poirier@linaro.org


Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent d5278220

tools/perf/Makefile.config

+7 −4

Original line number	Diff line number	Diff line
		@@ -746,10 +746,13 @@ ifdef LIBBABELTRACE
		endif

		ifndef NO_AUXTRACE
		ifeq ($(ARCH),x86)
		ifeq ($(feature-get_cpuid), 0)
		msg := $(warning Your gcc lacks the __get_cpuid() builtin, disables support for auxtrace/Intel PT, please install a newer gcc);
		NO_AUXTRACE := 1
		else
		endif
		endif
		ifndef NO_AUXTRACE
		$(call detected,CONFIG_AUXTRACE)
		CFLAGS += -DHAVE_AUXTRACE_SUPPORT
		endif