Skip disassembling ld.so.cache in ll_prof.py.

tools/ll_prof.py

Index: tools/ll_prof.py
diff --git a/tools/ll_prof.py b/tools/ll_prof.py
index 5c07d9165f9f89107d55ba1572d4d02600f601be..8e56f41d9179339848df279211599be9fcbb32f6 100755
--- a/tools/ll_prof.py
+++ b/tools/ll_prof.py
@@ -674,6 +674,8 @@ OBJDUMP_SYMBOL_LINE_RE = re.compile(
   r"^([a-f0-9]+)\s(.{7})\s(\S+)\s+([a-f0-9]+)\s+(?:\.hidden\s+)?(.*)$")
 OBJDUMP_DYNAMIC_SYMBOLS_START_RE = re.compile(
    r"^DYNAMIC SYMBOL TABLE")
+OBJDUMP_SKIP_RE = re.compile(
+   r"^.*ld\.so\.cache$")
 KERNEL_ALLSYMS_FILE = "/proc/kallsyms"
 PERF_KERNEL_ALLSYMS_RE = re.compile(
   r".*kallsyms.*")
@@ -692,6 +694,8 @@ class LibraryRepo(object):
     # is 0.
     if mmap_info.tid == 0 and not options.kernel:
       return True
+    if OBJDUMP_SKIP_RE.match(mmap_info.filename):
+      return True
     if PERF_KERNEL_ALLSYMS_RE.match(mmap_info.filename):
       return self._LoadKernelSymbols(code_map)
     self.infos.append(mmap_info)