Messages in this thread Patch in this message | | | From | Masami Hiramatsu <> | Subject | [BUGFIX PATCH V2 3/6] perf/probe: Fix to probe an inline function which has no entry pc | Date | Sat, 26 Oct 2019 18:00:46 +0900 |
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Fix perf probe to probe an inlne function which has no entry pc or low pc but only has ranges attribute.
This seems very rare case, but I could find a few examples, as same as probe_point_search_cb(), use die_entrypc() to get the entry address in probe_point_inline_cb() too.
Without this patch, # perf probe -D __amd_put_nb_event_constraints Failed to get entry address of __amd_put_nb_event_constraints. Probe point '__amd_put_nb_event_constraints' not found. Error: Failed to add events.
With this patch, # perf probe -D __amd_put_nb_event_constraints p:probe/__amd_put_nb_event_constraints _text+34059
Fixes: 4ea42b181434 ("perf: Add perf probe subcommand, a kprobe-event setup helper") Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> --- tools/perf/util/probe-finder.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 71633f55f045..2fa932bcf960 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -930,7 +930,7 @@ static int probe_point_inline_cb(Dwarf_Die *in_die, void *data) ret = find_probe_point_lazy(in_die, pf); else { /* Get probe address */ - if (dwarf_entrypc(in_die, &addr) != 0) { + if (die_entrypc(in_die, &addr) != 0) { pr_warning("Failed to get entry address of %s.\n", dwarf_diename(in_die)); return -ENOENT;
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