ftrace: Remove FTRACE_FL_CONVERTED flag

Since we disable all function tracer processing if we detect
that a modification of a instruction had failed, we do not need
to track that the record has failed. No more ftrace processing
is allowed, and the FTRACE_FL_CONVERTED flag is pointless.

The FTRACE_FL_CONVERTED flag was used to denote records that were
successfully converted from mcount calls into nops. But if a single
record fails, all of ftrace is disabled.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

2 files changed, 4 insertions, 9 deletions

diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 2a195ffd4269..32047449b309 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -150,7 +150,6 @@ enum {
         FTRACE_FL_FILTER        = (1 << 1),
         FTRACE_FL_ENABLED       = (1 << 2),
         FTRACE_FL_NOTRACE       = (1 << 3),
-        FTRACE_FL_CONVERTED     = (1 << 4),
 };
 
 struct dyn_ftrace {
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index eb19fae2c54a..9abaaf46f212 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1087,12 +1087,8 @@ static void ftrace_replace_code(int enable)
                 return;
 
         do_for_each_ftrace_rec(pg, rec) {
-                /*
-                 * Skip over free records, records that have
-                 * failed and not converted.
-                 */
-                if (rec->flags & FTRACE_FL_FREE ||
-                    !(rec->flags & FTRACE_FL_CONVERTED))
+                /* Skip over free records */
+                if (rec->flags & FTRACE_FL_FREE)
                         continue;
 
                 failed = __ftrace_replace_code(rec, enable);
@@ -1280,10 +1276,10 @@ static int ftrace_update_code(struct module *mod)
                  */
                 if (!ftrace_code_disable(mod, p)) {
                         ftrace_free_rec(p);
-                        continue;
+                        /* Game over */
+                        break;
                 }
 
-                p->flags |= FTRACE_FL_CONVERTED;
                 ftrace_update_cnt++;
 
                 /*