Messages in this thread | | | Date | Wed, 4 Jan 2023 16:28:45 -0800 | From | "Paul E. McKenney" <> | Subject | [PATCH rcu 0/9] SRCU updates for v6.3 |
| |
Hello!
This series provides SRCU updates, perhaps most notably the addition of a srcu_down_read() and srcu_up_read() that act like srcu_read_lock() and srcu_read_unlock(), but which permit the srcu_up_read() to be invoked from a different context than the srcu_down_read().
1. Release early_srcu resources when no longer in use, courtesy of Zqiang.
2. Delegate work to the boot cpu if using SRCU_SIZE_SMALL, courtesy of Pingfan Liu.
3. Fix a misspelling in comment, courtesy of Pingfan Liu.
4. Fix the comparision in srcu_invl_snp_seq(), courtesy of Pingfan Liu.
5. Add srcu_down_read() and srcu_up_read().
6. Add test code for semaphore-like SRCU readers.
7. Remove needless rcu_seq_done() check while holding read lock, courtesy of Pingfan Liu.
8. Yet more detail for srcu_readers_active_idx_check() comments.
9. Update comment after the index flip.
Thanx, Paul
------------------------------------------------------------------------
b/include/linux/srcu.h | 45 ++++++++++++++++++++++ b/include/linux/srcutree.h | 2 - b/kernel/rcu/srcutree.c | 9 ++-- b/kernel/rcu/update.c | 1 kernel/rcu/srcutree.c | 89 ++++++++++++++++++++++++++++++++------------- kernel/rcu/update.c | 3 + 6 files changed, 119 insertions(+), 30 deletions(-)
| |