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-top.c b/tools/perf/builtin-top.c
index b9a321f..a212475 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -79,7 +79,7 @@
static bool hide_kernel_symbols = false;
static bool hide_user_symbols = false;
static struct winsize winsize;
-const char *vmlinux_name;
+struct symbol_conf symbol_conf;
/*
* Source
@@ -128,7 +128,7 @@
static inline struct symbol *sym_entry__symbol(struct sym_entry *self)
{
- return ((void *)self) + symbol__priv_size;
+ return ((void *)self) + symbol_conf.priv_size;
}
static void get_term_dimensions(struct winsize *ws)
@@ -695,7 +695,7 @@
fprintf(stdout, "\t[f] profile display filter (count). \t(%d)\n", count_filter);
- if (vmlinux_name) {
+ if (symbol_conf.vmlinux_name) {
fprintf(stdout, "\t[F] annotate display filter (percent). \t(%d%%)\n", sym_pcnt_filter);
fprintf(stdout, "\t[s] annotate symbol. \t(%s)\n", name?: "NULL");
fprintf(stdout, "\t[S] stop annotation.\n");
@@ -732,7 +732,7 @@
case 'F':
case 's':
case 'S':
- return vmlinux_name ? 1 : 0;
+ return symbol_conf.vmlinux_name ? 1 : 0;
default:
break;
}
@@ -1261,7 +1261,8 @@
"system-wide collection from all CPUs"),
OPT_INTEGER('C', "CPU", &profile_cpu,
"CPU to profile on"),
- OPT_STRING('k', "vmlinux", &vmlinux_name, "file", "vmlinux pathname"),
+ OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
+ "file", "vmlinux pathname"),
OPT_BOOLEAN('K', "hide_kernel_symbols", &hide_kernel_symbols,
"hide kernel symbols"),
OPT_INTEGER('m', "mmap-pages", &mmap_pages,
@@ -1295,7 +1296,7 @@
int cmd_top(int argc, const char **argv, const char *prefix __used)
{
- int counter, err;
+ int counter;
page_size = sysconf(_SC_PAGE_SIZE);
@@ -1313,15 +1314,16 @@
if (!nr_counters)
nr_counters = 1;
- symbol__init(sizeof(struct sym_entry) +
- (nr_counters + 1) * sizeof(unsigned long));
+ symbol_conf.priv_size = (sizeof(struct sym_entry) +
+ (nr_counters + 1) * sizeof(unsigned long));
+ if (symbol_conf.vmlinux_name == NULL)
+ symbol_conf.try_vmlinux_path = true;
+ if (symbol__init(&symbol_conf) < 0)
+ return -1;
if (delay_secs < 1)
delay_secs = 1;
- err = kernel_maps__init(vmlinux_name, !vmlinux_name, true);
- if (err < 0)
- return err;
parse_source(sym_filter_entry);
/*