* [PATCH 0/2] rcu/nocb fix and optimization
@ 2022-10-10 22:39 Frederic Weisbecker
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From: Frederic Weisbecker @ 2022-10-10 22:39 UTC (permalink / raw)
To: Paul E . McKenney
Cc: LKML, Frederic Weisbecker, Joel Fernandes, rcu, Neeraj Upadhyay,
Uladzislau Rezki
I wanted to send this a few days ago but then I faced a TREE01 stall
(rcu_barrier() related). I just couldn't remember if it was before or
after these patches... But finally looking at the log, I found the
head which is e8c56bb5baa6969bf2d01b8619f22f5a71818497 (an old RCU:dev
head from more than a month ago, way before these patches). Phew!
Anyway I re-launched many times TREE01 on latest RCU:dev before and
after these patches, it has run both ways more than 600 hours without
any issue...
Frederic Weisbecker (2):
rcu: Fix missing nocb gp wake on rcu_barrier()
rcu/nocb: Spare bypass locking upon normal enqueue
kernel/rcu/tree.c | 6 ++++++
kernel/rcu/tree.h | 1 +
kernel/rcu/tree_nocb.h | 11 +++++++++--
3 files changed, 16 insertions(+), 2 deletions(-)
--
2.25.1
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