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authorJiri Olsa <jolsa@kernel.org>2015-03-02 18:56:12 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-03-23 16:49:27 +0100
commit2c7da8c590ad719796f46c875a096eb45ef971c7 (patch)
tree19a02e156fca7c96fd7a1d962fcaf17f6da7176f /tools/perf/util
parentperf tools: Try to lookup kernel module map before creating one (diff)
downloadlinux-2c7da8c590ad719796f46c875a096eb45ef971c7.tar.xz
linux-2c7da8c590ad719796f46c875a096eb45ef971c7.zip
perf annotate: Allow annotation for decompressed kernel modules
Decompressing kernel module file for objdump command if needed. Annotation commands now display annotation for compressed kernel modules. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-x4jcytk2d5qjmnjvb0w75q3f@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
-rw-r--r--tools/perf/util/annotate.c32
1 files changed, 31 insertions, 1 deletions
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 61bf9128e1f2..b72086eca943 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -1008,6 +1008,32 @@ fallback:
}
filename = symfs_filename;
}
+ } else if (dso__needs_decompress(dso)) {
+ char tmp[PATH_MAX];
+ struct kmod_path m;
+ int fd;
+ bool ret;
+
+ if (kmod_path__parse_ext(&m, symfs_filename))
+ goto out_free_filename;
+
+ snprintf(tmp, PATH_MAX, "/tmp/perf-kmod-XXXXXX");
+
+ fd = mkstemp(tmp);
+ if (fd < 0) {
+ free(m.ext);
+ goto out_free_filename;
+ }
+
+ ret = decompress_to_file(m.ext, symfs_filename, fd);
+
+ free(m.ext);
+ close(fd);
+
+ if (!ret)
+ goto out_free_filename;
+
+ strcpy(symfs_filename, tmp);
}
snprintf(command, sizeof(command),
@@ -1027,7 +1053,7 @@ fallback:
file = popen(command, "r");
if (!file)
- goto out_free_filename;
+ goto out_remove_tmp;
while (!feof(file))
if (symbol__parse_objdump_line(sym, map, file, privsize,
@@ -1042,6 +1068,10 @@ fallback:
delete_last_nop(sym);
pclose(file);
+
+out_remove_tmp:
+ if (dso__needs_decompress(dso))
+ unlink(symfs_filename);
out_free_filename:
if (delete_extract)
kcore_extract__delete(&kce);