diff options
| author | Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2015-04-28 17:35:37 +0530 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-05-04 12:43:44 -0300 |
| commit | 031b84c407c3153ffbcb4f8f832edf48af988719 (patch) | |
| tree | e411fca2e84dee0c112fd6d7b498a559d696d0b9 /tools/perf/util | |
| parent | fb6d59423115b10125f5db6acb8471f6f0af4ad7 (diff) | |
perf probe ppc: Enable matching against dot symbols automatically
Allow perf probe to work on ppc ABIv1 without the need to specify the
leading dot '.' for functions. 'perf probe do_fork' works with this
patch.
We do this by changing how symbol name comparison works on ppc ABIv1 -
we simply ignore and skip over the initial dot, if one exists, during
symbol name comparison.
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/652a8f3bfa919bd02a1836a128370eaed59b4a34.1430217967.git.naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/map.c | 5 | ||||
| -rw-r--r-- | tools/perf/util/map.h | 3 | ||||
| -rw-r--r-- | tools/perf/util/symbol.c | 4 |
3 files changed, 9 insertions, 3 deletions
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index a14f08f41686..cd0e335008b4 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -292,6 +292,11 @@ int map__load(struct map *map, symbol_filter_t filter) return 0; } +int __weak arch__compare_symbol_names(const char *namea, const char *nameb) +{ + return strcmp(namea, nameb); +} + struct symbol *map__find_symbol(struct map *map, u64 addr, symbol_filter_t filter) { diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h index ec19c59ca38e..4e0c729841ab 100644 --- a/tools/perf/util/map.h +++ b/tools/perf/util/map.h @@ -124,7 +124,7 @@ struct thread; */ #define __map__for_each_symbol_by_name(map, sym_name, pos, filter) \ for (pos = map__find_symbol_by_name(map, sym_name, filter); \ - pos && strcmp(pos->name, sym_name) == 0; \ + pos && arch__compare_symbol_names(pos->name, sym_name) == 0; \ pos = symbol__next_by_name(pos)) #define map__for_each_symbol_by_name(map, sym_name, pos) \ @@ -132,6 +132,7 @@ struct thread; typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym); +int arch__compare_symbol_names(const char *namea, const char *nameb); void map__init(struct map *map, enum map_type type, u64 start, u64 end, u64 pgoff, struct dso *dso); struct map *map__new(struct machine *machine, u64 start, u64 len, diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index f80575728c64..45ba48a7acb3 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -411,7 +411,7 @@ static struct symbol *symbols__find_by_name(struct rb_root *symbols, int cmp; s = rb_entry(n, struct symbol_name_rb_node, rb_node); - cmp = strcmp(name, s->sym.name); + cmp = arch__compare_symbol_names(name, s->sym.name); if (cmp < 0) n = n->rb_left; @@ -429,7 +429,7 @@ static struct symbol *symbols__find_by_name(struct rb_root *symbols, struct symbol_name_rb_node *tmp; tmp = rb_entry(n, struct symbol_name_rb_node, rb_node); - if (strcmp(tmp->sym.name, s->sym.name)) + if (arch__compare_symbol_names(tmp->sym.name, s->sym.name)) break; s = tmp; |