diff options
| author | Paul E. McKenney <paulmck@kernel.org> | 2025-11-05 12:32:08 -0800 |
|---|---|---|
| committer | Frederic Weisbecker <frederic@kernel.org> | 2025-11-05 23:58:28 +0100 |
| commit | ac51c40c2c148a75f3191ff401c9889a7fc12cb1 (patch) | |
| tree | 0182fb55fc012a092ff2f36c94a64ef29e224242 /include/linux/srcutiny.h | |
| parent | 8235bcfd39e865763e764b4c968012bdfb808af1 (diff) | |
srcu: Make SRCU-fast readers enforce use of SRCU-fast definition/init
This commit makes CONFIG_PROVE_RCU=y kernels enforce the new rule
that srcu_struct structures that are passed to srcu_read_lock_fast()
and other SRCU-fast read-side markers be either initialized with
init_srcu_struct_fast() on the one hand or defined with DEFINE_SRCU_FAST()
or DEFINE_STATIC_SRCU_FAST() on the other.
This eliminates the read-side test that was formerly included in
srcu_read_lock_fast() and friends, speeding these primitives up by
about 25% (admittedly only about half of a nanosecond, but when tracing
on fastpaths...)
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: <bpf@vger.kernel.org>
Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
Diffstat (limited to 'include/linux/srcutiny.h')
| -rw-r--r-- | include/linux/srcutiny.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/srcutiny.h b/include/linux/srcutiny.h index 92e6ab53398f..1ecc3393fb26 100644 --- a/include/linux/srcutiny.h +++ b/include/linux/srcutiny.h @@ -112,7 +112,6 @@ static inline void srcu_barrier(struct srcu_struct *ssp) static inline void srcu_expedite_current(struct srcu_struct *ssp) { } #define srcu_check_read_flavor(ssp, read_flavor) do { } while (0) -#define srcu_check_read_flavor_force(ssp, read_flavor) do { } while (0) /* Defined here to avoid size increase for non-torture kernels. */ static inline void srcu_torture_stats_print(struct srcu_struct *ssp, |