[PATCH v3 5/8] objtool/klp: Remove .llvm suffix in demangle_name()

[Song Liu <song@kernel.org>]

Remove .llvm suffix, so that we can correlate foo.llvm.<hash 1> and
foo.llvm.<hash 2>.

Signed-off-by: Song Liu <song@kernel.org>
---
 tools/objtool/elf.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index d66452d66fb4..efb13ec0a89d 100644
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -455,10 +455,15 @@ static int read_sections(struct elf *elf)
 static ssize_t demangled_name_len(const char *name)
 {
 	ssize_t len;
+	const char *p;
 
 	if (!strstarts(name, "__UNIQUE_ID_") && !strchr(name, '.'))
 		return strlen(name);
 
+	p = strstr(name, ".llvm.");
+	if (p)
+		return p - name;
+
 	for (len = strlen(name) - 1; len >= 0; len--) {
 		char c = name[len];
 
@@ -482,6 +487,9 @@ static ssize_t demangled_name_len(const char *name)
  *   __UNIQUE_ID_addressable___UNIQUE_ID_pci_invalid_bar_694_695
  *
  * to remove both trailing numbers, also remove trailing '_'.
+ *
+ * For symbols with llvm suffix, i.e., foo.llvm.<hash>, remove the
+ * .llvm.<hash> part.
  */
 static const char *demangle_name(struct symbol *sym)
 {
-- 
2.47.3