perf_counter tools: Optionally pass a symbol filter to the dso load routines
Will be used by perf top.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090528175526.GF4747@ghostprotocols.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/Documentation/perf_counter/util/symbol.c b/Documentation/perf_counter/util/symbol.c
index 504ac31..4728121 100644
--- a/Documentation/perf_counter/util/symbol.c
+++ b/Documentation/perf_counter/util/symbol.c
@@ -155,7 +155,7 @@
return p - ptr;
}
-static int dso__load_kallsyms(struct dso *self)
+static int dso__load_kallsyms(struct dso *self, symbol_filter_t filter)
{
struct rb_node *nd, *prevnd;
char *line = NULL;
@@ -201,7 +201,10 @@
if (sym == NULL)
goto out_delete_line;
- dso__insert_symbol(self, sym);
+ if (filter && filter(self, sym))
+ symbol__delete(sym, self->sym_priv_size);
+ else
+ dso__insert_symbol(self, sym);
}
/*
@@ -286,7 +289,8 @@
return sec;
}
-static int dso__load_sym(struct dso *self, int fd, const char *name)
+static int dso__load_sym(struct dso *self, int fd, const char *name,
+ symbol_filter_t filter)
{
Elf_Data *symstrs;
uint32_t nr_syms;
@@ -352,9 +356,12 @@
if (!f)
goto out_elf_end;
- dso__insert_symbol(self, f);
-
- nr++;
+ if (filter && filter(self, f))
+ symbol__delete(f, self->sym_priv_size);
+ else {
+ dso__insert_symbol(self, f);
+ nr++;
+ }
}
err = nr;
@@ -364,7 +371,7 @@
return err;
}
-int dso__load(struct dso *self)
+int dso__load(struct dso *self, symbol_filter_t filter)
{
int size = strlen(self->name) + sizeof("/usr/lib/debug%s.debug");
char *name = malloc(size);
@@ -396,7 +403,7 @@
fd = open(name, O_RDONLY);
} while (fd < 0);
- ret = dso__load_sym(self, fd, name);
+ ret = dso__load_sym(self, fd, name, filter);
close(fd);
/*
@@ -410,28 +417,29 @@
return ret;
}
-static int dso__load_vmlinux(struct dso *self, const char *vmlinux)
+static int dso__load_vmlinux(struct dso *self, const char *vmlinux,
+ symbol_filter_t filter)
{
int err, fd = open(vmlinux, O_RDONLY);
if (fd < 0)
return -1;
- err = dso__load_sym(self, fd, vmlinux);
+ err = dso__load_sym(self, fd, vmlinux, filter);
close(fd);
return err;
}
-int dso__load_kernel(struct dso *self, const char *vmlinux)
+int dso__load_kernel(struct dso *self, const char *vmlinux, symbol_filter_t filter)
{
int err = -1;
if (vmlinux)
- err = dso__load_vmlinux(self, vmlinux);
+ err = dso__load_vmlinux(self, vmlinux, filter);
if (err)
- err = dso__load_kallsyms(self);
+ err = dso__load_kallsyms(self, filter);
return err;
}