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| author | Prashanth Nageshappa <prashanth@linux.vnet.ibm.com> | 2012-03-26 15:36:49 +0530 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-03-28 11:56:49 -0300 |
| commit | ba28c59bc9ed8fb7b9a753cd88ee54a2c4f6265b (patch) | |
| tree | 30f2e5d133173779284dfe4e11ecdfd22f6f20fb | |
| parent | 1e2dd2f73afdc810cc7400b7036232fbdc416eeb (diff) | |
| download | op-kernel-dev-ba28c59bc9ed8fb7b9a753cd88ee54a2c4f6265b.zip op-kernel-dev-ba28c59bc9ed8fb7b9a753cd88ee54a2c4f6265b.tar.gz | |
perf probe: Finder fails to resolve function name to address
If DIE entries corresponding to declarations appear before definition
entry, probe finder returns error instead of continuing to look further
for a definition entry.
This patch ensures we reach to the DIE entry corresponding to the
definition and get the function address.
V2: A simpler solution based on Masami's suggestion.
Signed-off-by: Prashanth Nageshappa <prashanth@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/4F703FB9.9020407@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/probe-finder.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 2cc162d..d448984 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -972,10 +972,12 @@ static int probe_point_search_cb(Dwarf_Die *sp_die, void *data) struct dwarf_callback_param *param = data; struct probe_finder *pf = param->data; struct perf_probe_point *pp = &pf->pev->point; + Dwarf_Attribute attr; /* Check tag and diename */ if (dwarf_tag(sp_die) != DW_TAG_subprogram || - !die_compare_name(sp_die, pp->function)) + !die_compare_name(sp_die, pp->function) || + dwarf_attr(sp_die, DW_AT_declaration, &attr)) return DWARF_CB_OK; /* Check declared file */ |
