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perf test: Fix vmlinux failure on s390x 

On s390x perf test 1 failed. It turned out that commit 4a084ecfc8
("perf report: Fix module symbol adjustment for s390x") was incorrect.
The previous implementation in dso__load_sym() is also suitable for
s390x.

Therefore this patch undoes commit 4a084ecfc8.

Signed-off-by: Thomas-Mich Richter <tmricht@linux.vnet.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Zvonko Kosic <zvonko.kosic@de.ibm.com>
Fixes: 4a084ecfc8 ("perf report: Fix module symbol adjustment for s390x")
LPU-Reference: 20170915071404.58398-1-tmricht@linux.vnet.ibm.com
Link: http://lkml.kernel.org/n/tip-5ani7ly57zji7s0hmzkx416l@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Thomas Richter 2017-09-15 09:14:03 +02:00 committed by Arnaldo Carvalho de Melo
parent 090657c9fb
commit b28503a3fe
3 changed files with 1 additions and 18 deletions
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8
tools/perf/arch/s390/util/sym-handling.c
View File

@ -18,12 +18,4 @@ bool elf__needs_adjust_symbols(GElf_Ehdr ehdr)
return false;
return ehdr.e_type == ET_REL || ehdr.e_type == ET_DYN;
}
void arch__adjust_sym_map_offset(GElf_Sym *sym,
GElf_Shdr *shdr __maybe_unused,
struct map *map)
{
if (map->type == MAP__FUNCTION)
sym->st_value += map->start;
}
#endif

8
tools/perf/util/symbol-elf.c
View File

@ -810,12 +810,6 @@ static u64 ref_reloc(struct kmap *kmap)
void __weak arch__sym_update(struct symbol *s __maybe_unused,
GElf_Sym *sym __maybe_unused) { }
void __weak arch__adjust_sym_map_offset(GElf_Sym *sym, GElf_Shdr *shdr,
struct map *map __maybe_unused)
{
sym->st_value -= shdr->sh_addr - shdr->sh_offset;
}
int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
struct symsrc *runtime_ss, int kmodule)
{
@ -996,7 +990,7 @@ int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
/* Adjust symbol to map to file offset */
if (adjust_kernel_syms)
arch__adjust_sym_map_offset(&sym, &shdr, map);
sym.st_value -= shdr.sh_addr - shdr.sh_offset;
if (strcmp(section_name,
(curr_dso->short_name +

3
tools/perf/util/symbol.h
View File

@ -344,9 +344,6 @@ int setup_intlist(struct intlist **list, const char *list_str,
#ifdef HAVE_LIBELF_SUPPORT
bool elf__needs_adjust_symbols(GElf_Ehdr ehdr);
void arch__sym_update(struct symbol *s, GElf_Sym *sym);
void arch__adjust_sym_map_offset(GElf_Sym *sym,
GElf_Shdr *shdr __maybe_unused,
struct map *map __maybe_unused);
#endif
#define SYMBOL_A 0