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    Subject[tip:perf/core] perf symbols: Only un-prelink non-zero symbols
    Commit-ID:  8db24c70ab43a4dd38c39b0b0cb4d4874257de55
    Gitweb: http://git.kernel.org/tip/8db24c70ab43a4dd38c39b0b0cb4d4874257de55
    Author: Cody P Schafer <cody@linux.vnet.ibm.com>
    AuthorDate: Fri, 10 Aug 2012 15:22:49 -0700
    Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
    CommitDate: Mon, 13 Aug 2012 12:54:06 -0300

    perf symbols: Only un-prelink non-zero symbols

    Prelink only adjusts the addresses of non-zero symbols. Do the same when we
    reverse the adjustments.

    Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
    Cc: David Hansen <dave@linux.vnet.ibm.com>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Matt Hellsley <matthltc@us.ibm.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
    Link: http://lkml.kernel.org/r/1344637382-22789-4-git-send-email-cody@linux.vnet.ibm.com
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    ---
    tools/perf/util/symbol-elf.c | 2 +-
    1 files changed, 1 insertions(+), 1 deletions(-)

    diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
    index 9ca89f8..e037609 100644
    --- a/tools/perf/util/symbol-elf.c
    +++ b/tools/perf/util/symbol-elf.c
    @@ -717,7 +717,7 @@ int dso__load_sym(struct dso *dso, struct map *map, const char *name, int fd,
    goto new_symbol;
    }

    - if (curr_dso->adjust_symbols) {
    + if (curr_dso->adjust_symbols && sym.st_value) {
    pr_debug4("%s: adjusting symbol: st_value: %#" PRIx64 " "
    "sh_addr: %#" PRIx64 " sh_offset: %#" PRIx64 "\n", __func__,
    (u64)sym.st_value, (u64)shdr.sh_addr,

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