Re: [PATCH v2 tip/core/rcu 0/13] Miscellaneous fixes for 4.12

From: Paul E. McKenney
Date: Wed Apr 19 2017 - 12:46:06 EST


Hello!

This v3 series contains the following fixes:

1. Rename SLAB_DESTROY_BY_RCU to SLAB_TYPESAFE_BY_RCU.

2. Use "WARNING" tag on RCU's lockdep splats.

3. Update obsolete callback_head comment.

4. Make RCU_FANOUT_LEAF help text more explicit about skew_tick.

5. Remove obsolete comment from rcu_future_gp_cleanup() header.

6. Disable sparse warning emitted by hlist_add_tail_rcu(), courtesy
of Michael S. Tsirkin.

7. Improve comments for hotplug/suspend/hibernate functions.

8. Use correct path for Kconfig fragment for duplicate rcutorture
test scenarios.

9. Use bool value directly for ->beenonline comparison, courtesy
of Nicholas Mc Guire.

10. Use true/false in assignment to bool variable rcu_nocb_poll,
courtesy of Nicholas Mc Guire.

11. Fix typo in PER_RCU_NODE_PERIOD header comment.

Changes since v2:

o Fixed indentation in RCU_FANOOUT_LEAF Kconfig option help text,
as noted by Josh Triplett.

o Applied feedback from David Rientjes.

Changes since v1:

o Applied review feedback from Peter Zijlstra, Vlastimil Babka,
and Eric Dumazet.

o Dropped v1 patch #7 ("Add smp_mb__after_atomic() to
sync_exp_work_done()"), as ensuing discussion confirmed that
smp_mb__before_atomic() guarantees a full barrier.

o Moved v1 patch #9 ("Use static initialization for "srcu" in
mm/mmu_notifier.c") to the srcu series because 0day Test Robot
showed that it needs to be there.

Thanx, Paul

------------------------------------------------------------------------

Documentation/RCU/00-INDEX | 2
Documentation/RCU/rculist_nulls.txt | 6 -
Documentation/RCU/whatisRCU.txt | 3
drivers/gpu/drm/i915/i915_gem.c | 2
drivers/gpu/drm/i915/i915_gem_request.h | 2
drivers/staging/lustre/lustre/ldlm/ldlm_lockd.c | 2
fs/jbd2/journal.c | 2
fs/signalfd.c | 2
include/linux/dma-fence.h | 4
include/linux/rculist.h | 3
include/linux/slab.h | 6 -
include/linux/types.h | 2
include/net/sock.h | 2
init/Kconfig | 10 +
kernel/fork.c | 4
kernel/locking/lockdep.c | 86 +++++++--------
kernel/locking/rtmutex-debug.c | 9 -
kernel/rcu/tree.c | 49 ++++++--
kernel/rcu/tree_plugin.h | 2
kernel/signal.c | 2
mm/kasan/kasan.c | 6 -
mm/kmemcheck.c | 2
mm/rmap.c | 4
mm/slab.c | 6 -
mm/slab.h | 4
mm/slab_common.c | 6 -
mm/slob.c | 6 -
mm/slub.c | 12 +-
net/dccp/ipv4.c | 2
net/dccp/ipv6.c | 2
net/ipv4/tcp_ipv4.c | 2
net/ipv6/tcp_ipv6.c | 2
net/llc/af_llc.c | 2
net/llc/llc_conn.c | 4
net/llc/llc_sap.c | 2
net/netfilter/nf_conntrack_core.c | 8 -
net/smc/af_smc.c | 2
tools/testing/selftests/rcutorture/bin/kvm-test-1-run.sh | 2
38 files changed, 158 insertions(+), 116 deletions(-)