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| author | Paul E. McKenney <paulmck@kernel.org> | 2025-07-01 17:23:28 -0700 |
|---|---|---|
| committer | Neeraj Upadhyay (AMD) <neeraj.upadhyay@kernel.org> | 2025-07-16 09:48:44 +0530 |
| commit | 941ab0b369c983f7867de54c8579fd7f1676ee3c (patch) | |
| tree | f108a4d2b7e3326afd7aac25c5d115e6d3936345 /kernel | |
| parent | rcutorture: Remove SRCU-lite scenarios (diff) | |
| download | linux-941ab0b369c983f7867de54c8579fd7f1676ee3c.tar.gz linux-941ab0b369c983f7867de54c8579fd7f1676ee3c.zip | |
rcutorture: Remove support for SRCU-lite
Because SRCU-lite is being replaced by SRCU-fast, this commit removes
support for SRCU-lite from rcutorture.c
Both SRCU-lite and SRCU-fast provide faster readers by dropping the
smp_mb() call from their lock and unlock primitives, but incur a pair
of added RCU grace periods during the SRCU grace period. There is a
trivial mapping from the SRCU-lite API to that of SRCU-fast, so there
should be no transition issues.
[ paulmck: Apply Christoph Hellwig feedback. ]
Signed-off-by: "Paul E. McKenney" <paulmck@kernel.org>
Signed-off-by: Neeraj Upadhyay (AMD) <neeraj.upadhyay@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/rcu/rcutorture.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 213f23f20a64..7a893d51d02b 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -718,11 +718,6 @@ static int srcu_torture_read_lock(void) WARN_ON_ONCE(idx & ~0x1); ret += idx << 1; } - if (reader_flavor & SRCU_READ_FLAVOR_LITE) { - idx = srcu_read_lock_lite(srcu_ctlp); - WARN_ON_ONCE(idx & ~0x1); - ret += idx << 2; - } if (reader_flavor & SRCU_READ_FLAVOR_FAST) { scp = srcu_read_lock_fast(srcu_ctlp); idx = __srcu_ptr_to_ctr(srcu_ctlp, scp); @@ -756,8 +751,6 @@ static void srcu_torture_read_unlock(int idx) WARN_ON_ONCE((reader_flavor && (idx & ~reader_flavor)) || (!reader_flavor && (idx & ~0x1))); if (reader_flavor & SRCU_READ_FLAVOR_FAST) srcu_read_unlock_fast(srcu_ctlp, __srcu_ctr_to_ptr(srcu_ctlp, (idx & 0x8) >> 3)); - if (reader_flavor & SRCU_READ_FLAVOR_LITE) - srcu_read_unlock_lite(srcu_ctlp, (idx & 0x4) >> 2); if (reader_flavor & SRCU_READ_FLAVOR_NMI) srcu_read_unlock_nmisafe(srcu_ctlp, (idx & 0x2) >> 1); if ((reader_flavor & SRCU_READ_FLAVOR_NORMAL) || !(reader_flavor & SRCU_READ_FLAVOR_ALL)) |