From ba28c59bc9ed8fb7b9a753cd88ee54a2c4f6265b Mon Sep 17 00:00:00 2001 From: Prashanth Nageshappa Date: Mon, 26 Mar 2012 15:36:49 +0530 Subject: [PATCH] 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 Acked-by: Masami Hiramatsu Cc: Ananth N Mavinakayanahalli Cc: Ingo Molnar Cc: Masami Hiramatsu Cc: Srikar Dronamraju Cc: Steven Rostedt Link: http://lkml.kernel.org/r/4F703FB9.9020407@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/probe-finder.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 2cc162d3b78c..d448984ed789 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 */