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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-07-24 22:00:31 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-09-10 16:48:43 +0200 |
| commit | 5fecaa044af3dc52e4bc138842bdf1c6676105b1 (patch) | |
| tree | f7232c0b1fd47915413607568817e0f7545c9b35 /kernel/trace | |
| parent | ftrace: Remove freeing of old_hash from ftrace_hash_move() (diff) | |
| download | linux-5fecaa044af3dc52e4bc138842bdf1c6676105b1.tar.xz linux-5fecaa044af3dc52e4bc138842bdf1c6676105b1.zip | |
ftrace: Grab any ops for a rec for enabled_functions output
When dumping the enabled_functions, use the first op that is
found with a trampoline to the record, as there should only be
one, as only one ops can be registered to a function that has
a trampoline.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/ftrace.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 2c4eef49b1af..858ac16f8492 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1901,6 +1901,25 @@ int ftrace_test_record(struct dyn_ftrace *rec, int enable) } static struct ftrace_ops * +ftrace_find_tramp_ops_any(struct dyn_ftrace *rec) +{ + struct ftrace_ops *op; + + do_for_each_ftrace_op(op, ftrace_ops_list) { + + if (!op->trampoline) + continue; + + if (ftrace_lookup_ip(op->func_hash->filter_hash, rec->ip) && + (ftrace_hash_empty(op->func_hash->notrace_hash) || + !ftrace_lookup_ip(op->func_hash->notrace_hash, rec->ip))) + return op; + } while_for_each_ftrace_op(op); + + return NULL; +} + +static struct ftrace_ops * ftrace_find_tramp_ops_curr(struct dyn_ftrace *rec) { struct ftrace_ops *op; @@ -2966,7 +2985,7 @@ static int t_show(struct seq_file *m, void *v) if (rec->flags & FTRACE_FL_TRAMP_EN) { struct ftrace_ops *ops; - ops = ftrace_find_tramp_ops_curr(rec); + ops = ftrace_find_tramp_ops_any(rec); if (ops && ops->trampoline) seq_printf(m, "\ttramp: %pS", (void *)ops->trampoline); |