Displaying 1 result from an estimated 1 matches for "rcu_is_watch".
2023 Jan 26
0
[PATCH v2 3/9] tracing: Warn about !rcu_is_watching()
...x/trace_recursion.h
+++ b/include/linux/trace_recursion.h
@@ -135,6 +135,21 @@ extern void ftrace_record_recursion(unsi
# define do_ftrace_record_recursion(ip, pip) do { } while (0)
#endif
+#ifdef CONFIG_ARCH_WANTS_NO_INSTR
+# define trace_warn_on_no_rcu(ip) \
+ ({ \
+ bool __ret = !rcu_is_watching(); \
+ if (__ret && !trace_recursion_test(TRACE_RECORD_RECURSION_BIT)) { \
+ trace_recursion_set(TRACE_RECORD_RECURSION_BIT); \
+ WARN_ONCE(true, "RCU not on for: %pS\n", (void *)ip); \
+ trace_recursion_clear(TRACE_RECORD_RECURSION_BIT); \
+ } \
+ __ret;...