perf tools: Extract common API out of unwind-libunwind-local.c

This patch extracts common unwind-libunwind APIs out of
unwind-libunwind-local.c, this part will be used by both local and
remote libunwind.

Signed-off-by: He Kuang <hekuang@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1464924803-22214-9-git-send-email-hekuang@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 5e23d85..004fb1d 100644 (file)
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -100,6 +100,7 @@ libperf-$(CONFIG_DWARF) += dwarf-aux.o
 
 libperf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o
 libperf-$(CONFIG_LOCAL_LIBUNWIND)    += unwind-libunwind-local.o
+libperf-$(CONFIG_LIBUNWIND)          += unwind-libunwind.o
 
 libperf-$(CONFIG_LIBBABELTRACE) += data-convert-bt.o
 

diff --git a/tools/perf/util/unwind-libunwind-local.c b/tools/perf/util/unwind-libunwind-local.c
index b0c5db1..9c70486 100644 (file)
--- a/tools/perf/util/unwind-libunwind-local.c
+++ b/tools/perf/util/unwind-libunwind-local.c
@@ -691,37 +691,3 @@ _unwind_libunwind_ops = {
 
 struct unwind_libunwind_ops *
 local_unwind_libunwind_ops = &_unwind_libunwind_ops;
-
-static void unwind__register_ops(struct thread *thread,
-                                struct unwind_libunwind_ops *ops)
-{
-       thread->unwind_libunwind_ops = ops;
-}
-
-int unwind__prepare_access(struct thread *thread)
-{
-       unwind__register_ops(thread, local_unwind_libunwind_ops);
-
-       return thread->unwind_libunwind_ops->prepare_access(thread);
-}
-
-void unwind__flush_access(struct thread *thread)
-{
-       if (thread->unwind_libunwind_ops)
-               thread->unwind_libunwind_ops->flush_access(thread);
-}
-
-void unwind__finish_access(struct thread *thread)
-{
-       if (thread->unwind_libunwind_ops)
-               thread->unwind_libunwind_ops->finish_access(thread);
-}
-
-int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
-                        struct thread *thread,
-                        struct perf_sample *data, int max_stack)
-{
-       if (thread->unwind_libunwind_ops)
-               return thread->unwind_libunwind_ops->get_entries(cb, arg, thread, data, max_stack);
-       return 0;
-}

diff --git a/tools/perf/util/unwind-libunwind.c b/tools/perf/util/unwind-libunwind.c
new file mode 100644 (file)
index 0000000..f86f903
--- /dev/null
+++ b/tools/perf/util/unwind-libunwind.c
@@ -0,0 +1,38 @@
+#include "unwind.h"
+#include "thread.h"
+
+struct unwind_libunwind_ops __weak *local_unwind_libunwind_ops;
+
+static void unwind__register_ops(struct thread *thread,
+                         struct unwind_libunwind_ops *ops)
+{
+       thread->unwind_libunwind_ops = ops;
+}
+
+int unwind__prepare_access(struct thread *thread)
+{
+       unwind__register_ops(thread, local_unwind_libunwind_ops);
+
+       return thread->unwind_libunwind_ops->prepare_access(thread);
+}
+
+void unwind__flush_access(struct thread *thread)
+{
+       if (thread->unwind_libunwind_ops)
+               thread->unwind_libunwind_ops->flush_access(thread);
+}
+
+void unwind__finish_access(struct thread *thread)
+{
+       if (thread->unwind_libunwind_ops)
+               thread->unwind_libunwind_ops->finish_access(thread);
+}
+
+int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
+                        struct thread *thread,
+                        struct perf_sample *data, int max_stack)
+{
+       if (thread->unwind_libunwind_ops)
+               return thread->unwind_libunwind_ops->get_entries(cb, arg, thread, data, max_stack);
+       return 0;
+}