In this series, we are making lockdep use an rcuidle tracepoint. For this reason we need a notrace variant of srcu_dereference since otherwise we get lockdep splats since lockdep hooks may not have run yet. This patch adds the needed variant.
Cc: Steven Rostedt <[email protected]> Cc: Peter Zilstra <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Cc: Tom Zanussi <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Thomas Glexiner <[email protected]> Cc: Boqun Feng <[email protected]> Cc: Paul McKenney <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Fenguang Wu <[email protected]> Cc: Baohong Liu <[email protected]> Cc: Vedang Patel <[email protected]> Cc: [email protected] Signed-off-by: Joel Fernandes <[email protected]> --- include/linux/srcu.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/srcu.h b/include/linux/srcu.h index 2ec618979b20..a1c4947be877 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -135,6 +135,11 @@ static inline int srcu_read_lock_held(const struct srcu_struct *sp) */ #define srcu_dereference(p, sp) srcu_dereference_check((p), (sp), 0) +/** + * srcu_dereference_notrace - no tracing and no lockdep calls from here + */ +#define srcu_dereference_notrace(p, sp) srcu_dereference_check((p), (sp), 1) + /** * srcu_read_lock - register a new reader for an SRCU-protected structure. * @sp: srcu_struct in which to register the new reader. -- 2.17.0.441.gb46fe60e1d-goog
