diff options
| author | Paul E. McKenney <paulmck@kernel.org> | 2025-11-05 12:32:12 -0800 |
|---|---|---|
| committer | Frederic Weisbecker <frederic@kernel.org> | 2025-11-07 13:57:38 +0100 |
| commit | 37827223f86aa71b267769d5f51ca16b44b45ae5 (patch) | |
| tree | eae17382da0d69efe496a13f91a85c6143cd7629 /include/linux/srcu.h | |
| parent | 3ed04e3f0362351a57cb3eda1c504506f2df82b1 (diff) | |
srcu: Add SRCU_READ_FLAVOR_FAST_UPDOWN CPP macro
This commit adds the SRCU_READ_FLAVOR_FAST_UPDOWN=0x8 macro
and adjusts rcutorture to make use of it. In this commit, both
SRCU_READ_FLAVOR_FAST=0x4 and the new SRCU_READ_FLAVOR_FAST_UPDOWN
test SRCU-fast. When the SRCU-fast-updown is added, the new
SRCU_READ_FLAVOR_FAST_UPDOWN macro will test it when passed to the
rcutorture.reader_flavor module parameter.
The old SRCU_READ_FLAVOR_FAST macro's value changed from 0x8 to 0x4.
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/srcu.h')
| -rw-r--r-- | include/linux/srcu.h | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/include/linux/srcu.h b/include/linux/srcu.h index 41e27c1d917d..1dd6812aabe7 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h @@ -56,13 +56,15 @@ int init_srcu_struct_fast(struct srcu_struct *ssp); #endif /* #else #ifdef CONFIG_DEBUG_LOCK_ALLOC */ /* Values for SRCU Tree srcu_data ->srcu_reader_flavor, but also used by rcutorture. */ -#define SRCU_READ_FLAVOR_NORMAL 0x1 // srcu_read_lock(). -#define SRCU_READ_FLAVOR_NMI 0x2 // srcu_read_lock_nmisafe(). -// 0x4 // SRCU-lite is no longer with us. -#define SRCU_READ_FLAVOR_FAST 0x8 // srcu_read_lock_fast(). -#define SRCU_READ_FLAVOR_ALL (SRCU_READ_FLAVOR_NORMAL | SRCU_READ_FLAVOR_NMI | \ - SRCU_READ_FLAVOR_FAST) // All of the above. -#define SRCU_READ_FLAVOR_SLOWGP SRCU_READ_FLAVOR_FAST +#define SRCU_READ_FLAVOR_NORMAL 0x1 // srcu_read_lock(). +#define SRCU_READ_FLAVOR_NMI 0x2 // srcu_read_lock_nmisafe(). +// 0x4 // SRCU-lite is no longer with us. +#define SRCU_READ_FLAVOR_FAST 0x4 // srcu_read_lock_fast(). +#define SRCU_READ_FLAVOR_FAST_UPDOWN 0x8 // srcu_read_lock_fast(). +#define SRCU_READ_FLAVOR_ALL (SRCU_READ_FLAVOR_NORMAL | SRCU_READ_FLAVOR_NMI | \ + SRCU_READ_FLAVOR_FAST | SRCU_READ_FLAVOR_FAST_UPDOWN) + // All of the above. +#define SRCU_READ_FLAVOR_SLOWGP (SRCU_READ_FLAVOR_FAST | SRCU_READ_FLAVOR_FAST_UPDOWN) // Flavors requiring synchronize_rcu() // instead of smp_mb(). void __srcu_read_unlock(struct srcu_struct *ssp, int idx) __releases(ssp); |