Commit-ID: f0ee3b467ab7a74ffce75190259eb59dbf30ecad Gitweb: http://git.kernel.org/tip/f0ee3b467ab7a74ffce75190259eb59dbf30ecad Author: Adrian Hunter <[email protected]> AuthorDate: Fri, 14 Aug 2015 15:50:06 +0300 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Mon, 17 Aug 2015 11:07:38 -0300
perf symbols: Fix annotation of vdso Older kernels attempt to prelink vdso to its virtual address. To permit annotation using objdump, the map__rip_2objdump() calculation must result in that same address which we can infer from the start and offset of the text section. Signed-off-by: Adrian Hunter <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Will Deacon <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/util/symbol-elf.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index b0ad810..53bb5f5 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -875,6 +875,17 @@ int dso__load_sym(struct dso *dso, struct map *map, } } + /* + * Handle any relocation of vdso necessary because older kernels + * attempted to prelink vdso to its virtual address. + */ + if (dso__is_vdso(dso)) { + GElf_Shdr tshdr; + + if (elf_section_by_name(elf, &ehdr, &tshdr, ".text", NULL)) + map->reloc = map->start - tshdr.sh_addr + tshdr.sh_offset; + } + dso->adjust_symbols = runtime_ss->adjust_symbols || ref_reloc(kmap); /* * Initial kernel and module mappings do not map to the dso. For -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
