Commit aa6292f4 authored by Mathieu Poirier's avatar Mathieu Poirier Committed by Arnaldo Carvalho de Melo
Browse files

perf tools: Integrating the CoreSight decoding library 



The Open CoreSight Decoding Library (openCSD) is a free and open library
to decode traces collected by the CoreSight hardware infrastructure.

This patch adds the required mechanic to recognise the presence of the
openCSD library on a system and set up miscellaneous flags to be used in
the compilation of the trace decoding feature.

Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kim Phillips <kim.phillips@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Mike Leach <mike.leach@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Link: http://lkml.kernel.org/r/1516211539-5166-2-git-send-email-mathieu.poirier@linaro.org
Link: http://lkml.kernel.org/r/1516635644-24819-1-git-send-email-mathieu.poirier@linaro.org


[ Merged missing test-libopencsd.c file, provided later by Mathieu ]
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 5b50758c

tools/build/Makefile.feature

+2 −1
Original line number Diff line number Diff line
@@ -66,7 +66,8 @@ FEATURE_TESTS_BASIC := \ 
        bpf                             \

        sched_getcpu			\

        sdt				\

        setns

        setns				\

        libopencsd



# FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list

# of all feature tests

tools/build/feature/Makefile

+6 −1
Original line number Diff line number Diff line
@@ -52,7 +52,8 @@ FILES= \ 
         test-cxx.bin                           \

         test-jvmti.bin				\

         test-sched_getcpu.bin			\

         test-setns.bin

         test-setns.bin				\

         test-libopencsd.bin



FILES := $(addprefix $(OUTPUT),$(FILES))
@@ -104,6 +105,10 @@ $(OUTPUT)test-sched_getcpu.bin: 
$(OUTPUT)test-setns.bin:

	$(BUILD)



$(OUTPUT)test-libopencsd.bin:

	$(BUILD) # -lopencsd_c_api -lopencsd provided by

		 # $(FEATURE_CHECK_LDFLAGS-libopencsd)



DWARFLIBS := -ldw

ifeq ($(findstring -static,${LDFLAGS}),-static)

DWARFLIBS += -lelf -lebl -lz -llzma -lbz2

tools/build/feature/test-all.c

+5 −0
Original line number Diff line number Diff line
@@ -162,6 +162,10 @@ 
# include "test-setns.c"

#undef main



#define main main_test_libopencsd

# include "test-libopencsd.c"

#undef main



int main(int argc, char *argv[])

{

	main_test_libpython();
@@ -199,6 +203,7 @@ int main(int argc, char *argv[]) 
	main_test_sched_getcpu();

	main_test_sdt();

	main_test_setns();

	main_test_libopencsd();



	return 0;

}

tools/build/feature/test-libopencsd.c

0 → 100644
+8 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

#include <opencsd/c_api/opencsd_c_api.h>



int main(void)

{

	(void)ocsd_get_version();

	return 0;

}

tools/perf/Makefile.config

+25 −0
Original line number Diff line number Diff line
@@ -105,6 +105,16 @@ FEATURE_CHECK_LDFLAGS-libunwind = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS) 
FEATURE_CHECK_CFLAGS-libunwind-debug-frame = $(LIBUNWIND_CFLAGS)

FEATURE_CHECK_LDFLAGS-libunwind-debug-frame = $(LIBUNWIND_LDFLAGS) $(LIBUNWIND_LIBS)



ifdef CSINCLUDES

  LIBOPENCSD_CFLAGS := -I$(CSINCLUDES)

endif

OPENCSDLIBS := -lopencsd_c_api -lopencsd

ifdef CSLIBS

  LIBOPENCSD_LDFLAGS := -L$(CSLIBS)

endif

FEATURE_CHECK_CFLAGS-libopencsd := $(LIBOPENCSD_CFLAGS)

FEATURE_CHECK_LDFLAGS-libopencsd := $(LIBOPENCSD_LDFLAGS) $(OPENCSDLIBS)



ifeq ($(NO_PERF_REGS),0)

  CFLAGS += -DHAVE_PERF_REGS_SUPPORT

endif
@@ -353,6 +363,21 @@ ifeq ($(feature-setns), 1) 
  $(call detected,CONFIG_SETNS)

endif



ifndef NO_CORESIGHT

  ifeq ($(feature-libopencsd), 1)

    CFLAGS += -DHAVE_CSTRACE_SUPPORT $(LIBOPENCSD_CFLAGS)

    LDFLAGS += $(LIBOPENCSD_LDFLAGS)

    EXTLIBS += $(OPENCSDLIBS)

    $(call detected,CONFIG_LIBOPENCSD)

    ifdef CSTRACE_RAW

      CFLAGS += -DCS_DEBUG_RAW

      ifeq (${CSTRACE_RAW}, packed)

        CFLAGS += -DCS_RAW_PACKED

      endif

    endif

  endif

endif



ifndef NO_LIBELF

  CFLAGS += -DHAVE_LIBELF_SUPPORT

  EXTLIBS += -lelf

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