Messages in this thread Patch in this message | | | Subject | Re: perf archive warning | From | Lin Ming <> | Date | Wed, 02 Mar 2011 16:29:41 +0800 |
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On Wed, 2011-03-02 at 16:09 +0800, Lin Ming wrote: > ---------- Forwarded message ---------- > From: Han Pingtian <phan@redhat.com> > Date: Wed, Mar 2, 2011 at 12:23 PM > Subject: perf archive warning > To: linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org > Cc: Arnaldo Carvalho de Melo <acme@redhat.com>, Peter Zijlstra > <peterz@infradead.org> > > > Hi, > > perf archive has some waring messages, is this a bug? > > root@intel-s3e36-01 perf]# ./perf-archive > tar: .build-id/b2/370e39ea2898c6e11c188e2f3879e4e3d6d1ef: Cannot stat: > No such file or directory > tar: .build-id/b2/370e39ea2898c6e11c188e2f3879e4e3d6d1ef: Cannot stat: > No such file or directory > tar: Exiting with failure status due to previous errors
kernel.kallsyms is not created successfully in the buildid-cache. Could you have a try below patch?
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 72c124d..d3b5062 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -271,11 +271,16 @@ 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), + 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; @@ -307,7 +312,8 @@ 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;
> Now please run: > > $ tar xvf perf.data.tar.bz2 -C ~/.debug > > wherever you need to run 'perf report' on. > [root@intel-s3e36-01 perf]# ./perf --version > perf version 2.6.38.rc6.166.g493f33 > [root@intel-s3e36-01 perf]# ./perf buildid-list > b2370e39ea2898c6e11c188e2f3879e4e3d6d1ef [kernel.kallsyms] > dd95cb496ebc4ed922eeb5640965f1243fcfcd9a > /lib/modules/2.6.32-118.el6.x86_64/kernel/fs/ext4/ext4.ko > 9e1aca88b83308cec7574d74975fa6f7d654c96e /lib64/libc-2.12.so > d880be15bf992b5fbcc629e6bbf1c747a928ddd5 /lib64/libglib-2.0.so.0.2200.5 > d1b2ca4e1ec8f81ba820e5f1375d960107ac7e50 /usr/lib64/libstdc++.so.6.0.13 > [root@intel-s3e36-01 perf]# > > -- > Han Pingtian > Quality Engineer > hpt @ #kernel-qe > Red Hat, Inc > Freedom ... courage ... Commitment ... ACCOUNTABILITY > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
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