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Date:	Mon, 14 Jul 2014 13:02:38 +0300
From:	Adrian Hunter <>
To:	Arnaldo Carvalho de Melo <>
Cc:	Peter Zijlstra <>,, David Ahern <>,
	Frederic Weisbecker <>,
	Jiri Olsa <>,
	Namhyung Kim <>,
	Paul Mackerras <>,
	Stephane Eranian <>
Subject: [PATCH 14/41] perf buildid-cache: Apply force option to copying kcore

Currently a copy of kcore is not made if there is one
already with the same modules at the same addresses.
Change this to make a copy anyway if the force (-f)
option is also used.

Signed-off-by: Adrian Hunter <>
 tools/perf/builtin-buildid-cache.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/tools/perf/builtin-buildid-cache.c b/tools/perf/builtin-buildid-cache.c
index b22dbb1..2a2c78f 100644
--- a/tools/perf/builtin-buildid-cache.c
+++ b/tools/perf/builtin-buildid-cache.c
@@ -125,7 +125,8 @@ static int build_id_cache__kcore_existing(const char *from_dir, char *to_dir,
 	return ret;
-static int build_id_cache__add_kcore(const char *filename, const char *debugdir)
+static int build_id_cache__add_kcore(const char *filename, const char *debugdir,
+				     bool force)
 	char dir[32], sbuildid[BUILD_ID_SIZE * 2 + 1];
 	char from_dir[PATH_MAX], to_dir[PATH_MAX];
@@ -144,7 +145,8 @@ static int build_id_cache__add_kcore(const char *filename, const char *debugdir)
 	scnprintf(to_dir, sizeof(to_dir), "%s/[kernel.kcore]/%s",
 		  debugdir, sbuildid);
-	if (!build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) {
+	if (!force &&
+	    !build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) {
 		pr_debug("same kcore found in %s\n", to_dir);
 		return 0;
@@ -389,7 +391,7 @@ int cmd_buildid_cache(int argc, const char **argv,
 	if (kcore_filename &&
-	    build_id_cache__add_kcore(kcore_filename, debugdir))
+	    build_id_cache__add_kcore(kcore_filename, debugdir, force))
 		pr_warning("Couldn't add %s\n", kcore_filename);
 	return ret;

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