From: Jiri Olsa <[email protected]>

Adding feature check for babeltrace library [1], which will be used for
perf data file CTF [2] conversion in following patches.

The babeltrace library is now automatically detected as standard
feature. It's possible to specify LIBBABELTRACE_DIR make variable to
specify location of installed libbabeltrace, like:

  $ make LIBBABELTRACE_DIR=/opt/libbabeltrace/
    BUILD:   Doing 'make -j4' parallel build

  Auto-detecting system features:
  ...                         dwarf: [ on  ]
  ...                         glibc: [ on  ]
  ...                          gtk2: [ on  ]
  ...                      libaudit: [ on  ]
  ...                        libbfd: [ on  ]
  ...                        libelf: [ on  ]
  ...                       libnuma: [ on  ]
  ...                       libperl: [ on  ]
  ...                     libpython: [ on  ]
  ...                      libslang: [ on  ]
  ...                     libunwind: [ on  ]
  ...                 libbabeltrace: [ on  ]
  ...            libdw-dwarf-unwind: [ on  ]
  ...                          zlib: [ on  ]
  ...     DWARF post unwind library: libunwind

NOTE The installation of the [1] to to used by above make:
     $ git clone git://git.efficios.com/babeltrace.git
     $ cd babeltrace
     $ vim README
     $ ./bootstrap
     $ ./configure --prefix=/opt/libbabeltrace
     $ make prefix=/opt/libbabeltrace
     $ sudo make install prefix=/opt/libbabeltrace

Please make sure that the /opt/libbabeltrace/lib directory is in your
LD_LIBRARY_PATH:

 $ export LD_LIBRARY_PATH=/opt/libbabeltrace/lib

[1] babeltrace - http://www.efficios.com/babeltrace
[2] Common Trace Format - http://www.efficios.com/ctf

Signed-off-by: Jiri Olsa <[email protected]>
Acked-by: Namhyung Kim <[email protected]>
Reviewed-by: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Jeremie Galarneau <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Sebastian Andrzej Siewior <[email protected]>
Cc: Tom Zanussi <[email protected]>
Cc: Wang Nan <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
[ Added missing babeltrace build instructions ]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
 tools/perf/Makefile.perf                           |  4 +++-
 tools/perf/config/Makefile                         | 24 ++++++++++++++++++++++
 tools/perf/config/feature-checks/Makefile          |  8 ++++++--
 tools/perf/config/feature-checks/test-all.c        |  5 +++++
 .../config/feature-checks/test-libbabeltrace.c     |  8 ++++++++
 5 files changed, 46 insertions(+), 3 deletions(-)
 create mode 100644 tools/perf/config/feature-checks/test-libbabeltrace.c

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index efc5158738f4..ec4c063ed9f3 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -68,7 +68,9 @@ include config/utilities.mak
 # for reading the x32 mode 32-bit compatibility VDSO in 64-bit mode
 #
 # Define NO_ZLIB if you do not want to support compressed kernel modules
-
+#
+# Define NO_LIBBABELTRACE if you do not want libbabeltrace support
+# for CTF data format.
 
 ifeq ($(srctree),)
 srctree := $(patsubst %/,%,$(dir $(shell pwd)))
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index b97a7b903a23..6f129b0a9c64 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -96,6 +96,17 @@ ifndef NO_LIBELF
   FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind := $(LIBDW_LDFLAGS) -ldw
 endif
 
+ifndef NO_LIBBABELTRACE
+  # for linking with debug library, run like:
+  # make DEBUG=1 LIBBABELTRACE_DIR=/opt/libbabeltrace/
+  ifdef LIBBABELTRACE_DIR
+    LIBBABELTRACE_CFLAGS  := -I$(LIBBABELTRACE_DIR)/include
+    LIBBABELTRACE_LDFLAGS := -L$(LIBBABELTRACE_DIR)/lib
+  endif
+  FEATURE_CHECK_CFLAGS-libbabeltrace := $(LIBBABELTRACE_CFLAGS)
+  FEATURE_CHECK_LDFLAGS-libbabeltrace := $(LIBBABELTRACE_LDFLAGS) 
-lbabeltrace-ctf
+endif
+
 # include ARCH specific config
 -include $(src-perf)/arch/$(ARCH)/Makefile
 
@@ -216,6 +227,7 @@ CORE_FEATURE_TESTS =                        \
        stackprotector-all              \
        timerfd                         \
        libdw-dwarf-unwind              \
+       libbabeltrace                   \
        zlib
 
 LIB_FEATURE_TESTS =                    \
@@ -231,6 +243,7 @@ LIB_FEATURE_TESTS =                 \
        libslang                        \
        libunwind                       \
        libdw-dwarf-unwind              \
+       libbabeltrace                   \
        zlib
 
 VF_FEATURE_TESTS =                     \
@@ -692,6 +705,17 @@ else
   NO_PERF_READ_VDSOX32 := 1
 endif
 
+ifndef NO_LIBBABELTRACE
+  ifeq ($(feature-libbabeltrace), 0)
+    msg := $(warning No libbabeltrace found, disables 'perf data' CTF format 
support, please install libbabeltrace-devel/libbabeltrace-ctf-dev);
+    NO_LIBBABELTRACE := 1
+  else
+    CFLAGS += -DHAVE_LIBBABELTRACE_SUPPORT $(LIBBABELTRACE_CFLAGS)
+    LDFLAGS += $(LIBBABELTRACE_LDFLAGS)
+    EXTLIBS += -lbabeltrace-ctf
+  endif
+endif
+
 # Among the variables below, these:
 #   perfexecdir
 #   template_dir
diff --git a/tools/perf/config/feature-checks/Makefile 
b/tools/perf/config/feature-checks/Makefile
index b32ff3372514..70c9aebe9da3 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -29,6 +29,7 @@ FILES=                                        \
        test-stackprotector-all.bin     \
        test-timerfd.bin                \
        test-libdw-dwarf-unwind.bin     \
+       test-libbabeltrace.bin          \
        test-compile-32.bin             \
        test-compile-x32.bin            \
        test-zlib.bin
@@ -43,7 +44,7 @@ BUILD = $(CC) $(CFLAGS) -o $(OUTPUT)$@ $(patsubst 
%.bin,%.c,$@) $(LDFLAGS)
 ###############################
 
 test-all.bin:
-       $(BUILD) -Werror -fstack-protector-all -O2 -Werror -D_FORTIFY_SOURCE=2 
-ldw -lelf -lnuma -lelf -laudit -I/usr/include/slang -lslang $(shell 
$(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null) $(FLAGS_PERL_EMBED) 
$(FLAGS_PYTHON_EMBED) -DPACKAGE='"perf"' -lbfd -ldl -lz
+       $(BUILD) -Werror -fstack-protector-all -O2 -Werror -D_FORTIFY_SOURCE=2 
-ldw -lelf -lnuma -lelf -laudit -I/usr/include/slang -lslang $(shell 
$(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null) $(FLAGS_PERL_EMBED) 
$(FLAGS_PYTHON_EMBED) -DPACKAGE='"perf"' -lbfd -ldl -lz -lbabeltrace
 
 test-hello.bin:
        $(BUILD)
@@ -133,7 +134,10 @@ test-timerfd.bin:
        $(BUILD)
 
 test-libdw-dwarf-unwind.bin:
-       $(BUILD)
+       $(BUILD) # -ldw provided by $(FEATURE_CHECK_LDFLAGS-libdw-dwarf-unwind)
+
+test-libbabeltrace.bin:
+       $(BUILD) # -lbabeltrace provided by 
$(FEATURE_CHECK_LDFLAGS-libbabeltrace)
 
 test-sync-compare-and-swap.bin:
        $(BUILD) -Werror
diff --git a/tools/perf/config/feature-checks/test-all.c 
b/tools/perf/config/feature-checks/test-all.c
index 6d4d09323922..1ffc3da5ca10 100644
--- a/tools/perf/config/feature-checks/test-all.c
+++ b/tools/perf/config/feature-checks/test-all.c
@@ -101,6 +101,10 @@
 # include "test-pthread_attr_setaffinity_np.c"
 #undef main
 
+#define main main_test_libbabeltrace
+# include "test-libbabeltrace.c"
+#undef main
+
 int main(int argc, char *argv[])
 {
        main_test_libpython();
@@ -126,6 +130,7 @@ int main(int argc, char *argv[])
        main_test_sync_compare_and_swap(argc, argv);
        main_test_zlib();
        main_test_pthread_attr_setaffinity_np();
+       main_test_libbabeltrace();
 
        return 0;
 }
diff --git a/tools/perf/config/feature-checks/test-libbabeltrace.c 
b/tools/perf/config/feature-checks/test-libbabeltrace.c
new file mode 100644
index 000000000000..3b7dd68a4d52
--- /dev/null
+++ b/tools/perf/config/feature-checks/test-libbabeltrace.c
@@ -0,0 +1,8 @@
+
+#include <babeltrace/ctf-writer/writer.h>
+
+int main(void)
+{
+       bt_ctf_stream_class_get_packet_context_type((void *) 0);
+       return 0;
+}
-- 
1.9.3

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