perf symbols: Simplify symbol machinery setup
And also express its configuration toggles via a struct.
Now all one has to do is to call symbol__init(NULL) if the
defaults are OK, or pass a struct symbol_conf pointer with the
desired configuration.
If a tool uses kernel_maps__find_symbol() to look at the kernel
and modules mappings for a symbol but didn't call symbol__init()
first, that will generate a one time warning too, alerting the
subcommand developer that symbol__init() must be called.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259071517-3242-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 59b6123..cd97c2b 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -34,11 +34,9 @@
static int full_paths;
static int print_line;
-static bool use_modules;
static unsigned long page_size;
static unsigned long mmap_window = 32;
-const char *vmlinux_name;
struct sym_hist {
u64 sum;
@@ -56,6 +54,11 @@
struct sym_ext *ext;
};
+static struct symbol_conf symbol_conf = {
+ .priv_size = sizeof(struct sym_priv),
+ .try_vmlinux_path = true,
+};
+
static const char *sym_hist_filter;
static int symbol_filter(struct map *map __used, struct symbol *sym)
@@ -586,11 +589,6 @@
exit(0);
}
- if (kernel_maps__init(vmlinux_name, true, use_modules) < 0) {
- pr_err("failed to create kernel maps for symbol resolution\b");
- return -1;
- }
-
remap:
buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ,
MAP_SHARED, input, offset);
@@ -691,8 +689,9 @@
"be more verbose (show symbol address, etc)"),
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
"dump raw trace in ASCII"),
- OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"),
- OPT_BOOLEAN('m', "modules", &use_modules,
+ OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
+ "file", "vmlinux pathname"),
+ OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
"load module symbols - WARNING: use only with -k and LIVE kernel"),
OPT_BOOLEAN('l', "print-line", &print_line,
"print matching source lines (may be slow)"),
@@ -718,7 +717,8 @@
int cmd_annotate(int argc, const char **argv, const char *prefix __used)
{
- symbol__init(sizeof(struct sym_priv));
+ if (symbol__init(&symbol_conf) < 0)
+ return -1;
page_size = getpagesize();