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ftrace: Add trampolines to enabled_functions debug file

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The enabled_functions is used to help debug the dynamic function tracing.
Adding what trampolines are attached to files is useful for debugging.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (Red Hat) 2014-05-09 16:54:59 -04:00 • committed by Steven Rostedt
parent 79922b8009
commit 9674b2fada
1 changed files with 14 additions and 2 deletions
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16
kernel/trace/ftrace.c
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@ -2903,10 +2903,22 @@ static int t_show(struct seq_file *m, void *v)
return 0; return 0;
seq_printf(m, "%ps", (void *)rec->ip); seq_printf(m, "%ps", (void *)rec->ip);
if (iter->flags & FTRACE_ITER_ENABLED) if (iter->flags & FTRACE_ITER_ENABLED) {
seq_printf(m, " (%ld)%s", seq_printf(m, " (%ld)%s",
ftrace_rec_count(rec), ftrace_rec_count(rec),
rec->flags & FTRACE_FL_REGS ? " R" : ""); rec->flags & FTRACE_FL_REGS ? " R" : " ");
if (rec->flags & FTRACE_FL_TRAMP_EN) {
struct ftrace_ops *ops;
ops = ftrace_find_tramp_ops_curr(rec);
if (ops && ops->trampoline)
seq_printf(m, "\ttramp: %pS",
(void *)ops->trampoline);
else
seq_printf(m, "\ttramp: ERROR!");
}
}
seq_printf(m, "\n"); seq_printf(m, "\n");
return 0; return 0;