perf_counter tools: Fix vmlinux symbol generation breakage
vmlinux meets the criteria for symbol adjustment, which breaks vmlinux generated symbols.
Fix this by exempting vmlinux. This is a bit fragile in that someone could change the
kernel dso's name, but currently that name is also hardwired.
Signed-off-by: Mike Galbraith <efault@gmx.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1248091298.18702.18.camel@marge.simson.net>
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 98aee92..2810605 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -525,7 +525,7 @@
GElf_Sym sym;
Elf_Scn *sec, *sec_strndx;
Elf *elf;
- int nr = 0;
+ int nr = 0, kernel = !strcmp("[kernel]", self->name);
elf = elf_begin(fd, ELF_C_READ_MMAP, NULL);
if (elf == NULL) {
@@ -571,10 +571,13 @@
nr_syms = shdr.sh_size / shdr.sh_entsize;
memset(&sym, 0, sizeof(sym));
- self->adjust_symbols = (ehdr.e_type == ET_EXEC ||
+ if (!kernel) {
+ self->adjust_symbols = (ehdr.e_type == ET_EXEC ||
elf_section_by_name(elf, &ehdr, &shdr,
".gnu.prelink_undo",
NULL) != NULL);
+ } else self->adjust_symbols = 0;
+
elf_symtab__for_each_symbol(syms, nr_syms, index, sym) {
struct symbol *f;
const char *name;