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tracing/function: Cleanup for function tracer 

We can directly use %pf input format instead of kallsyms_lookup()
and %s input format

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Reviewed-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
This commit is contained in:
Xiao Guangrong 2009-07-16 14:21:08 +08:00 committed by Frederic Weisbecker
parent 79173bf556
commit 6f2f3cf00e
2 changed files with 4 additions and 17 deletions
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17
kernel/trace/ftrace.c
View File

@ -1403,18 +1403,13 @@ static int t_hash_show(struct seq_file *m, void *v)
{
struct ftrace_func_probe *rec;
struct hlist_node *hnd = v;
char str[KSYM_SYMBOL_LEN];
rec = hlist_entry(hnd, struct ftrace_func_probe, node);
if (rec->ops->print)
return rec->ops->print(m, rec->ip, rec->ops, rec->data);
kallsyms_lookup(rec->ip, NULL, NULL, NULL, str);
seq_printf(m, "%s:", str);
kallsyms_lookup((unsigned long)rec->ops->func, NULL, NULL, NULL, str);
seq_printf(m, "%s", str);
seq_printf(m, "%pf:%pf", (void *)rec->ip, (void *)rec->ops->func);
if (rec->data)
seq_printf(m, ":%p", rec->data);
@ -1512,7 +1507,6 @@ static int t_show(struct seq_file *m, void *v)
{
struct ftrace_iterator *iter = m->private;
struct dyn_ftrace *rec = v;
char str[KSYM_SYMBOL_LEN];
if (iter->flags & FTRACE_ITER_HASH)
return t_hash_show(m, v);
@ -1525,9 +1519,7 @@ static int t_show(struct seq_file *m, void *v)
if (!rec)
return 0;
kallsyms_lookup(rec->ip, NULL, NULL, NULL, str);
seq_printf(m, "%s\n", str);
seq_printf(m, "%pf\n", (void *)rec->ip);
return 0;
}
@ -2508,7 +2500,6 @@ static void g_stop(struct seq_file *m, void *p)
static int g_show(struct seq_file *m, void *v)
{
unsigned long *ptr = v;
char str[KSYM_SYMBOL_LEN];
if (!ptr)
return 0;
@ -2518,9 +2509,7 @@ static int g_show(struct seq_file *m, void *v)
return 0;
}
kallsyms_lookup(*ptr, NULL, NULL, NULL, str);
seq_printf(m, "%s\n", str);
seq_printf(m, "%pf\n", v);
return 0;
}

4
kernel/trace/trace_functions.c
View File

@ -288,11 +288,9 @@ static int
ftrace_trace_onoff_print(struct seq_file *m, unsigned long ip,
struct ftrace_probe_ops *ops, void *data)
{
char str[KSYM_SYMBOL_LEN];
long count = (long)data;
kallsyms_lookup(ip, NULL, NULL, NULL, str);
seq_printf(m, "%s:", str);
seq_printf(m, "%pf:", (void *)ip);
if (ops == &traceon_probe_ops)
seq_printf(m, "traceon");