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-rw-r--r--tools/perf/util/dso.c75
1 files changed, 75 insertions, 0 deletions
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
index 0247acfdfaca..36a607cf8f50 100644
--- a/tools/perf/util/dso.c
+++ b/tools/perf/util/dso.c
@@ -21,8 +21,10 @@ char dso__symtab_origin(const struct dso *dso)
[DSO_BINARY_TYPE__BUILDID_DEBUGINFO] = 'b',
[DSO_BINARY_TYPE__SYSTEM_PATH_DSO] = 'd',
[DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE] = 'K',
+ [DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP] = 'm',
[DSO_BINARY_TYPE__GUEST_KALLSYMS] = 'g',
[DSO_BINARY_TYPE__GUEST_KMODULE] = 'G',
+ [DSO_BINARY_TYPE__GUEST_KMODULE_COMP] = 'M',
[DSO_BINARY_TYPE__GUEST_VMLINUX] = 'V',
};
@@ -112,11 +114,13 @@ int dso__read_binary_type_filename(const struct dso *dso,
break;
case DSO_BINARY_TYPE__GUEST_KMODULE:
+ case DSO_BINARY_TYPE__GUEST_KMODULE_COMP:
path__join3(filename, size, symbol_conf.symfs,
root_dir, dso->long_name);
break;
case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE:
+ case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP:
__symbol__join_symfs(filename, size, dso->long_name);
break;
@@ -137,6 +141,77 @@ int dso__read_binary_type_filename(const struct dso *dso,
return ret;
}
+static int decompress_dummy(const char *input __maybe_unused,
+ int output __maybe_unused)
+{
+ return -1;
+}
+
+static const struct {
+ const char *fmt;
+ int (*decompress)(const char *input, int output);
+} compressions[] = {
+ { "gz", decompress_dummy },
+ { NULL, },
+};
+
+bool is_supported_compression(const char *ext)
+{
+ unsigned i;
+
+ for (i = 0; compressions[i].fmt; i++) {
+ if (!strcmp(ext, compressions[i].fmt))
+ return true;
+ }
+ return false;
+}
+
+bool is_kmodule_extension(const char *ext)
+{
+ if (strncmp(ext, "ko", 2))
+ return false;
+
+ if (ext[2] == '\0' || (ext[2] == '.' && is_supported_compression(ext+3)))
+ return true;
+
+ return false;
+}
+
+bool is_kernel_module(const char *pathname, bool *compressed)
+{
+ const char *ext = strrchr(pathname, '.');
+
+ if (ext == NULL)
+ return false;
+
+ if (is_supported_compression(ext + 1)) {
+ if (compressed)
+ *compressed = true;
+ ext -= 3;
+ } else if (compressed)
+ *compressed = false;
+
+ return is_kmodule_extension(ext + 1);
+}
+
+bool decompress_to_file(const char *ext, const char *filename, int output_fd)
+{
+ unsigned i;
+
+ for (i = 0; compressions[i].fmt; i++) {
+ if (!strcmp(ext, compressions[i].fmt))
+ return !compressions[i].decompress(filename,
+ output_fd);
+ }
+ return false;
+}
+
+bool dso__needs_decompress(struct dso *dso)
+{
+ return dso->symtab_type == DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP ||
+ dso->symtab_type == DSO_BINARY_TYPE__GUEST_KMODULE_COMP;
+}
+
/*
* Global list of open DSOs and the counter.
*/