From: "Steven Rostedt (Red Hat)" <[email protected]> When the last ftrace_ops is unregistered, all the function records should have a zeroed flags value. Make sure that is the case when the last ftrace_ops is unregistered.
Signed-off-by: Steven Rostedt <[email protected]> --- kernel/trace/ftrace.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index d325a1e76554..fb186b9ddf51 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -2416,6 +2416,21 @@ static int ftrace_shutdown(struct ftrace_ops *ops, int command) ftrace_run_update_code(command); + /* + * If there's no more ops registered with ftrace, run a + * sanity check to make sure all rec flags are cleared. + */ + if (ftrace_ops_list == &ftrace_list_end) { + struct ftrace_page *pg; + struct dyn_ftrace *rec; + + do_for_each_ftrace_rec(pg, rec) { + if (FTRACE_WARN_ON_ONCE(rec->flags)) + pr_warn(" %pS flags:%lx\n", + (void *)rec->ip, rec->flags); + } while_for_each_ftrace_rec(); + } + ops->old_hash.filter_hash = NULL; ops->old_hash.notrace_hash = NULL; -- 2.0.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
