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perf symbols: Make sure --symfs usage includes the path separator

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Minchan reported that perf failed to load vmlinux if --symfs argument
doesn't end with '/' character.

Fix it by making sure that the '/' path separator is used when composing
pathnames with a --symfs provided directory name.

Reported-by: Minchan Kim <minchan@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-8n4s6b6zvsez5ktanw006125@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo
2014-07-29 10:21:58 -03:00
committed by Arnaldo Carvalho de Melo
parent 5f1c4225f6
commit 972f393bc8
5 changed files with 42 additions and 23 deletions
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16
tools/perf/util/util.h
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@@ -68,6 +68,7 @@
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <inttypes.h>
#include <linux/kernel.h>
#include <linux/magic.h>
#include <linux/types.h>
#include <sys/ttydefaults.h>
@@ -317,6 +318,21 @@ unsigned long parse_tag_value(const char *str, struct parse_tag *tags);
#define SRCLINE_UNKNOWN ((char *) "??:0")
static inline int path__join(char *bf, size_t size,
const char *path1, const char *path2)
{
return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2);
}
static inline int path__join3(char *bf, size_t size,
const char *path1, const char *path2,
const char *path3)
{
return scnprintf(bf, size, "%s%s%s%s%s",
path1, path1[0] ? "/" : "",
path2, path2[0] ? "/" : "", path3);
}
struct dso;
char *get_srcline(struct dso *dso, unsigned long addr);