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Subject[PATCH 4/8] perf symbols: Introduce symbol__elf_init()
Date
From: Namhyung Kim <namhyung.kim@lge.com>

The symbol__elf_init() is for initializing internal libelf
data structure and getting rid of its dependency outside of
ELF/symboling handling code.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/builtin-buildid-list.c | 4 +---
tools/perf/util/symbol.c | 8 +++++++-
tools/perf/util/symbol.h | 1 +
3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/tools/perf/builtin-buildid-list.c b/tools/perf/builtin-buildid-list.c
index 6b2bcfbde150..7d6842826a0c 100644
--- a/tools/perf/builtin-buildid-list.c
+++ b/tools/perf/builtin-buildid-list.c
@@ -16,8 +16,6 @@
#include "util/session.h"
#include "util/symbol.h"

-#include <libelf.h>
-
static const char *input_name;
static bool force;
static bool show_kernel;
@@ -71,7 +69,7 @@ static int perf_session__list_build_ids(void)
{
struct perf_session *session;

- elf_version(EV_CURRENT);
+ symbol__elf_init();

session = perf_session__new(input_name, O_RDONLY, force, false,
&build_id__mark_dso_hit_ops);
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 3e2e5ea0f03f..38447ad42ad1 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1424,6 +1424,11 @@ out_close:
return err;
}

+void symbol__elf_init(void)
+{
+ elf_version(EV_CURRENT);
+}
+
static bool dso__build_id_equal(const struct dso *dso, u8 *build_id)
{
return memcmp(dso->build_id, build_id, sizeof(dso->build_id)) == 0;
@@ -2614,7 +2619,8 @@ int symbol__init(void)

symbol_conf.priv_size = ALIGN(symbol_conf.priv_size, sizeof(u64));

- elf_version(EV_CURRENT);
+ symbol__elf_init();
+
if (symbol_conf.sort_by_name)
symbol_conf.priv_size += (sizeof(struct symbol_name_rb_node) -
sizeof(struct symbol));
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index af0752b1aca1..295a9aa1cc78 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -296,6 +296,7 @@ void machines__destroy_guest_kernel_maps(struct rb_root *machines);

int symbol__init(void);
void symbol__exit(void);
+void symbol__elf_init(void);
size_t symbol__fprintf_symname_offs(const struct symbol *sym,
const struct addr_location *al, FILE *fp);
size_t symbol__fprintf_symname(const struct symbol *sym, FILE *fp);
--
1.7.10.2


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