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authorLin Ming <ming.m.lin@intel.com>2011-03-03 23:23:57 +0800
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-03-09 13:44:10 -0300
commit7ee235efe5f86f239ce73915fd2e15f4d14259c6 (patch)
tree25d412900cde7670239bdfdf0fee90103122bf61 /tools
parenta639dc64e52183a361c260e562e73b0800b89072 (diff)
downloadlinux-2.6.38-lt-ux500-7ee235efe5f86f239ce73915fd2e15f4d14259c6.tar.gz
perf symbols: Avoid resolving [kernel.kallsyms] to real path for buildid cache
kallsyms has a virtual file name [kernel.kallsyms]. Currently, it can't be added to buildid cache successfully because the code (build_id_cache__add_s) tries to resolve [kernel.kallsyms] to a real absolute pathname and that fails. Fixes it by not resolving it and just use the name [kernel.kallsyms]. So dir ~/.debug/[kernel.kallsyms] is created. Original bug report at: https://lkml.org/lkml/2011/3/1/524 Tested-by: Han Pingtian <phan@redhat.com> Cc: Han Pingtian <phan@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1299165837-27817-1-git-send-email-ming.m.lin@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/header.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index f6a929e7498..0866bcdb5e8 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -270,11 +270,15 @@ int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
const char *name, bool is_kallsyms)
{
const size_t size = PATH_MAX;
- char *realname = realpath(name, NULL),
- *filename = malloc(size),
+ char *realname, *filename = malloc(size),
*linkname = malloc(size), *targetname;
int len, err = -1;
+ if (is_kallsyms)
+ realname = (char *)name;
+ else
+ realname = realpath(name, NULL);
+
if (realname == NULL || filename == NULL || linkname == NULL)
goto out_free;
@@ -306,7 +310,8 @@ int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
if (symlink(targetname, linkname) == 0)
err = 0;
out_free:
- free(realname);
+ if (!is_kallsyms)
+ free(realname);
free(filename);
free(linkname);
return err;