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-rw-r--r--tools/perf/util/dso.c159
1 files changed, 123 insertions, 36 deletions
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
index c2f7d3b90966..fc0ddd5792a9 100644
--- a/tools/perf/util/dso.c
+++ b/tools/perf/util/dso.c
@@ -45,13 +45,13 @@ int dso__read_binary_type_filename(const struct dso *dso,
case DSO_BINARY_TYPE__DEBUGLINK: {
char *debuglink;
- strncpy(filename, dso->long_name, size);
- debuglink = filename + dso->long_name_len;
+ len = __symbol__join_symfs(filename, size, dso->long_name);
+ debuglink = filename + len;
while (debuglink != filename && *debuglink != '/')
debuglink--;
if (*debuglink == '/')
debuglink++;
- ret = filename__read_debuglink(dso->long_name, debuglink,
+ ret = filename__read_debuglink(filename, debuglink,
size - (debuglink - filename));
}
break;
@@ -148,6 +148,9 @@ static const struct {
#ifdef HAVE_ZLIB_SUPPORT
{ "gz", gzip_decompress_to_file },
#endif
+#ifdef HAVE_LZMA_SUPPORT
+ { "xz", lzma_decompress_to_file },
+#endif
{ NULL, NULL },
};
@@ -162,32 +165,14 @@ bool is_supported_compression(const char *ext)
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)
+bool is_kernel_module(const char *pathname)
{
- const char *ext = strrchr(pathname, '.');
+ struct kmod_path m;
- if (ext == NULL)
- return false;
-
- if (is_supported_compression(ext + 1)) {
- if (compressed)
- *compressed = true;
- ext -= 3;
- } else if (compressed)
- *compressed = false;
+ if (kmod_path__parse(&m, pathname))
+ return NULL;
- return is_kmodule_extension(ext + 1);
+ return m.kmod;
}
bool decompress_to_file(const char *ext, const char *filename, int output_fd)
@@ -209,6 +194,72 @@ bool dso__needs_decompress(struct dso *dso)
}
/*
+ * Parses kernel module specified in @path and updates
+ * @m argument like:
+ *
+ * @comp - true if @path contains supported compression suffix,
+ * false otherwise
+ * @kmod - true if @path contains '.ko' suffix in right position,
+ * false otherwise
+ * @name - if (@alloc_name && @kmod) is true, it contains strdup-ed base name
+ * of the kernel module without suffixes, otherwise strudup-ed
+ * base name of @path
+ * @ext - if (@alloc_ext && @comp) is true, it contains strdup-ed string
+ * the compression suffix
+ *
+ * Returns 0 if there's no strdup error, -ENOMEM otherwise.
+ */
+int __kmod_path__parse(struct kmod_path *m, const char *path,
+ bool alloc_name, bool alloc_ext)
+{
+ const char *name = strrchr(path, '/');
+ const char *ext = strrchr(path, '.');
+
+ memset(m, 0x0, sizeof(*m));
+ name = name ? name + 1 : path;
+
+ /* No extension, just return name. */
+ if (ext == NULL) {
+ if (alloc_name) {
+ m->name = strdup(name);
+ return m->name ? 0 : -ENOMEM;
+ }
+ return 0;
+ }
+
+ if (is_supported_compression(ext + 1)) {
+ m->comp = true;
+ ext -= 3;
+ }
+
+ /* Check .ko extension only if there's enough name left. */
+ if (ext > name)
+ m->kmod = !strncmp(ext, ".ko", 3);
+
+ if (alloc_name) {
+ if (m->kmod) {
+ if (asprintf(&m->name, "[%.*s]", (int) (ext - name), name) == -1)
+ return -ENOMEM;
+ } else {
+ if (asprintf(&m->name, "%s", name) == -1)
+ return -ENOMEM;
+ }
+
+ strxfrchar(m->name, '-', '_');
+ }
+
+ if (alloc_ext && m->comp) {
+ m->ext = strdup(ext + 4);
+ if (!m->ext) {
+ free((void *) m->name);
+ return -ENOMEM;
+ }
+ }
+
+ return 0;
+}
+
+/*
* Global list of open DSOs and the counter.
*/
static LIST_HEAD(dso__data_open);
@@ -240,7 +291,7 @@ static int do_open(char *name)
if (fd >= 0)
return fd;
- pr_debug("dso open failed, mmap: %s\n",
+ pr_debug("dso open failed: %s\n",
strerror_r(errno, sbuf, sizeof(sbuf)));
if (!dso__data_open_cnt || errno != EMFILE)
break;
@@ -1002,21 +1053,24 @@ struct dso *dsos__find(const struct dsos *dsos, const char *name,
return dso__find_by_longname(&dsos->root, name);
}
-struct dso *__dsos__findnew(struct dsos *dsos, const char *name)
+struct dso *dsos__addnew(struct dsos *dsos, const char *name)
{
- struct dso *dso = dsos__find(dsos, name, false);
+ struct dso *dso = dso__new(name);
- if (!dso) {
- dso = dso__new(name);
- if (dso != NULL) {
- dsos__add(dsos, dso);
- dso__set_basename(dso);
- }
+ if (dso != NULL) {
+ dsos__add(dsos, dso);
+ dso__set_basename(dso);
}
-
return dso;
}
+struct dso *__dsos__findnew(struct dsos *dsos, const char *name)
+{
+ struct dso *dso = dsos__find(dsos, name, false);
+
+ return dso ? dso : dsos__addnew(dsos, name);
+}
+
size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp,
bool (skip)(struct dso *dso, int parm), int parm)
{
@@ -1083,3 +1137,36 @@ enum dso_type dso__type(struct dso *dso, struct machine *machine)
return dso__type_fd(fd);
}
+
+int dso__strerror_load(struct dso *dso, char *buf, size_t buflen)
+{
+ int idx, errnum = dso->load_errno;
+ /*
+ * This must have a same ordering as the enum dso_load_errno.
+ */
+ static const char *dso_load__error_str[] = {
+ "Internal tools/perf/ library error",
+ "Invalid ELF file",
+ "Can not read build id",
+ "Mismatching build id",
+ "Decompression failure",
+ };
+
+ BUG_ON(buflen == 0);
+
+ if (errnum >= 0) {
+ const char *err = strerror_r(errnum, buf, buflen);
+
+ if (err != buf)
+ scnprintf(buf, buflen, "%s", err);
+
+ return 0;
+ }
+
+ if (errnum < __DSO_LOAD_ERRNO__START || errnum >= __DSO_LOAD_ERRNO__END)
+ return -1;
+
+ idx = errnum - __DSO_LOAD_ERRNO__START;
+ scnprintf(buf, buflen, "%s", dso_load__error_str[idx]);
+ return 0;
+}