Prev: Enable kdump with EFI boot
Next: [PATCHv10 2.6.35-rc6-tip 13/14] [RFC] perf: Show Potential probe points.
From: Srikar Dronamraju on 27 Jul 2010 07:20

GElf_Sym for a symbol is needed to filter out based on binding,
type, value. This will be needed to list only global binding
functions when listing functions from perf probe.

Signed-off-by: Srikar Dronamraju <srikar(a)linux.vnet.ibm.com>
---

tools/perf/builtin-test.c | 4 +++-
tools/perf/builtin-top.c | 6 +++++-
tools/perf/util/map.h | 4 +++-
tools/perf/util/symbol.c | 10 +++++-----
4 files changed, 16 insertions(+), 8 deletions(-)


diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index 035b9fa..31fb9e3 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -11,10 +11,12 @@
#include "util/session.h"
#include "util/symbol.h"
#include "util/thread.h"
+#include <gelf.h>

static long page_size;

-static int vmlinux_matches_kallsyms_filter(struct map *map __used, struct symbol *sym)
+static int vmlinux_matches_kallsyms_filter(struct map *map __used,
+ struct symbol *sym, GElf_Sym *gsym __used)
{
bool *visited = symbol__priv(sym);
*visited = true;
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index b513e40..56989e8 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -54,6 +54,7 @@

#include <linux/unistd.h>
#include <linux/types.h>
+#include <gelf.h>

static int *fd[MAX_NR_CPUS][MAX_COUNTERS];

@@ -932,7 +933,10 @@ static const char *skip_symbols[] = {
NULL
};

-static int symbol_filter(struct map *map, struct symbol *sym)
+#define __unused __attribute__((unused))
+
+static int symbol_filter(struct map *map, struct symbol *sym,
+ GElf_Sym *gsym __unused)
{
struct sym_entry *syme;
const char *name = sym->name;
diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
index f391345..1fcde24 100644
--- a/tools/perf/util/map.h
+++ b/tools/perf/util/map.h
@@ -7,6 +7,7 @@
#include <stdio.h>
#include <stdbool.h>
#include "types.h"
+#include <gelf.h>

enum map_type {
MAP__FUNCTION = 0,
@@ -100,7 +101,8 @@ u64 map__objdump_2ip(struct map *map, u64 addr);

struct symbol;

-typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
+typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym,
+ GElf_Sym *gsym);

void map__init(struct map *self, enum map_type type,
u64 start, u64 end, u64 pgoff, struct dso *dso);
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 410e824..38ad5c9 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -574,7 +574,7 @@ static int dso__split_kallsyms(struct dso *self, struct map *map,
++kernel_range;
}

- if (filter && filter(curr_map, pos)) {
+ if (filter && filter(curr_map, pos, NULL)) {
discard_symbol: rb_erase(&pos->rb_node, root);
symbol__delete(pos);
} else {
@@ -653,7 +653,7 @@ static int dso__load_perf_map(struct dso *self, struct map *map,
if (sym == NULL)
goto out_delete_line;

- if (filter && filter(map, sym))
+ if (filter && filter(map, sym, NULL))
symbol__delete(sym);
else {
symbols__insert(&self->symbols[map->type], sym);
@@ -864,7 +864,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, struct map *map,
if (!f)
goto out_elf_end;

- if (filter && filter(map, f))
+ if (filter && filter(map, f, &sym))
symbol__delete(f);
else {
symbols__insert(&self->symbols[map->type], f);
@@ -886,7 +886,7 @@ static int dso__synthesize_plt_symbols(struct dso *self, struct map *map,
if (!f)
goto out_elf_end;

- if (filter && filter(map, f))
+ if (filter && filter(map, f, &sym))
symbol__delete(f);
else {
symbols__insert(&self->symbols[map->type], f);
@@ -1122,7 +1122,7 @@ new_symbol:
if (!f)
goto out_elf_end;

- if (filter && filter(curr_map, f))
+ if (filter && filter(curr_map, f, &sym))
symbol__delete(f);
else {
symbols__insert(&curr_dso->symbols[curr_map->type], f);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
 | 
Pages: 1
Prev: Enable kdump with EFI boot
Next: [PATCHv10 2.6.35-rc6-tip 13/14] [RFC] perf: Show Potential probe points.