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authorArnaldo Carvalho de Melo <acme@redhat.com>2009-11-24 12:05:15 -0200
committerIngo Molnar <mingo@elte.hu>2009-11-24 16:37:02 +0100
commitb32d133aec5dc882cf783a293f393bfb3f4379e1 (patch)
tree41fc56a4aaec8892a235ffd530b36278d147dc4e /tools/perf/builtin-top.c
parent7cc017edb9459193d3b581155a14029e4bef0c49 (diff)
downloadlinux-b32d133aec5dc882cf783a293f393bfb3f4379e1.tar.bz2
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>
Diffstat (limited to 'tools/perf/builtin-top.c')
-rw-r--r--tools/perf/builtin-top.c24
1 files changed, 13 insertions, 11 deletions
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index b9a321fd184e..a21247543fc1 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -79,7 +79,7 @@ static int dump_symtab = 0;
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 @@ struct sym_entry {
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 @@ static void print_mapped_keys(void)
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 @@ static int key_mapped(int c)
case 'F':
case 's':
case 'S':
- return vmlinux_name ? 1 : 0;
+ return symbol_conf.vmlinux_name ? 1 : 0;
default:
break;
}
@@ -1261,7 +1261,8 @@ static const struct option options[] = {
"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 @@ static const struct option options[] = {
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 @@ int cmd_top(int argc, const char **argv, const char *prefix __used)
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);
/*