linux-kernel - [PATCH 20/24] perf tools: Add build_id_cache_

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Date:   Mon,  9 Nov 2020 22:54:11 +0100
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Song Liu <songliubraving@...com>,
        Ian Rogers <irogers@...gle.com>,
        Stephane Eranian <eranian@...gle.com>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>
Subject: [PATCH 20/24] perf tools: Add build_id_cache__add function

Adding build_id_cache__add function as core function
that adds file into build id database. It will be
sed from another callers in following changes.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/util/build-id.c | 42 ++++++++++++++++++++++++--------------
 tools/perf/util/build-id.h |  2 ++
 2 files changed, 29 insertions(+), 15 deletions(-)

diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index dc8f864fe15a..0d9a473c46d0 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -670,24 +670,15 @@ static char *build_id_cache__find_debug(const char *sbuild_id,
 	return realname;
 }
 
-int build_id_cache__add_s(const char *sbuild_id, const char *name,
-			  struct nsinfo *nsi, bool is_kallsyms, bool is_vdso)
+int
+build_id_cache__add(const char *sbuild_id, const char *name, const char *realname,
+		    struct nsinfo *nsi, bool is_kallsyms, bool is_vdso)
 {
 	const size_t size = PATH_MAX;
-	char *realname = NULL, *filename = NULL, *dir_name = NULL,
-	     *linkname = zalloc(size), *tmp;
+	char *filename = NULL, *dir_name = NULL, *linkname = zalloc(size), *tmp;
 	char *debugfile = NULL;
 	int err = -1;
 
-	if (!is_kallsyms) {
-		if (!is_vdso)
-			realname = nsinfo__realpath(name, nsi);
-		else
-			realname = realpath(name, NULL);
-		if (!realname)
-			goto out_free;
-	}
-
 	dir_name = build_id_cache__cachedir(sbuild_id, name, nsi, is_kallsyms,
 					    is_vdso);
 	if (!dir_name)
@@ -783,8 +774,6 @@ int build_id_cache__add_s(const char *sbuild_id, const char *name,
 		pr_debug4("Failed to update/scan SDT cache for %s\n", realname);
 
 out_free:
-	if (!is_kallsyms)
-		free(realname);
 	free(filename);
 	free(debugfile);
 	free(dir_name);
@@ -792,6 +781,29 @@ int build_id_cache__add_s(const char *sbuild_id, const char *name,
 	return err;
 }
 
+int build_id_cache__add_s(const char *sbuild_id, const char *name,
+			  struct nsinfo *nsi, bool is_kallsyms, bool is_vdso)
+{
+	char *realname = NULL;
+	int err = -1;
+
+	if (!is_kallsyms) {
+		if (!is_vdso)
+			realname = nsinfo__realpath(name, nsi);
+		else
+			realname = realpath(name, NULL);
+		if (!realname)
+			goto out_free;
+	}
+
+	err = build_id_cache__add(sbuild_id, name, realname, nsi, is_kallsyms, is_vdso);
+
+out_free:
+	if (!is_kallsyms)
+		free(realname);
+	return err;
+}
+
 static int build_id_cache__add_b(const struct build_id *bid,
 				 const char *name, struct nsinfo *nsi,
 				 bool is_kallsyms, bool is_vdso)
diff --git a/tools/perf/util/build-id.h b/tools/perf/util/build-id.h
index c6f10e3d2152..02613f4b2c29 100644
--- a/tools/perf/util/build-id.h
+++ b/tools/perf/util/build-id.h
@@ -63,6 +63,8 @@ char *build_id_cache__complement(const char *incomplete_sbuild_id);
 int build_id_cache__list_build_ids(const char *pathname, struct nsinfo *nsi,
 				   struct strlist **result);
 bool build_id_cache__cached(const char *sbuild_id);
+int build_id_cache__add(const char *sbuild_id, const char *name, const char *realname,
+			struct nsinfo *nsi, bool is_kallsyms, bool is_vdso);
 int build_id_cache__add_s(const char *sbuild_id,
 			  const char *name, struct nsinfo *nsi,
 			  bool is_kallsyms, bool is_vdso);
-- 
2.26.2