diff options
| author | Masami Hiramatsu <mhiramat@redhat.com> | 2010-04-02 20:50:53 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-04-02 21:35:43 +0400 |
| commit | 12e5a7ae475ccb2733d740ffb95d9ca0a18392da (patch) | |
| tree | cfadd42c251612ead5db477f310318b774bc7d17 /tools/perf/util/probe-finder.c | |
| parent | c9e385826d4f1ca5a72005ab8503598f791a8dc0 (diff) | |
| download | linux-12e5a7ae475ccb2733d740ffb95d9ca0a18392da.tar.xz | |
perf probe: Correct error message for non-structure type
perf probe outputs incorrect error message when it is called with
non-existent field on a non-data structure local variable.
<Before>
# perf probe vfs_read 'count.hoge'
Fatal: Structure on a register is not supported yet.
# perf probe vfs_read 'count->hoge'
Fatal: Semantic error: hoge must be referred by '.'
This corrects the messsage.
<After>
# perf probe vfs_read 'count.hoge'
Fatal: count is not a data structure.
# perf probe vfs_read 'count->hoge'
Fatal: count is not a data structure.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
LKML-Reference: <20100402165052.23551.75866.stgit@localhost6.localdomain6>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/probe-finder.c')
| -rw-r--r-- | tools/perf/util/probe-finder.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index b44132ead95a..59b0115de30a 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -429,12 +429,20 @@ static void convert_variable_fields(Dwarf_Die *vr_die, const char *varname, if (die_get_real_type(&type, &type) == NULL) die("Failed to get a type information of %s.", varname); + /* Verify it is a data structure */ + if (dwarf_tag(&type) != DW_TAG_structure_type) + die("%s is not a data structure.", varname); + ref = xzalloc(sizeof(struct kprobe_trace_arg_ref)); if (*ref_ptr) (*ref_ptr)->next = ref; else *ref_ptr = ref; } else { + /* Verify it is a data structure */ + if (dwarf_tag(&type) != DW_TAG_structure_type) + die("%s is not a data structure.", varname); + if (field->ref) die("Semantic error: %s must be referred by '.'", field->name); @@ -442,10 +450,6 @@ static void convert_variable_fields(Dwarf_Die *vr_die, const char *varname, die("Structure on a register is not supported yet."); } - /* Verify it is a data structure */ - if (dwarf_tag(&type) != DW_TAG_structure_type) - die("%s is not a data structure.", varname); - if (die_find_member(&type, field->name, &member) == NULL) die("%s(tyep:%s) has no member %s.", varname, dwarf_diename(&type), field->name); |