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Date: Fri, 1 Jan 2016 14:11:18 -0800
From: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To: mingo@...nel.org
Cc: linux-kernel@...r.kernel.org, peterz@...radead.org,
petkan@...-labs.com, yang.shi@...aro.org,
paul.gortmaker@...driver.com, cmetcalf@...hip.com, ani@...sta.com,
aik@...abs.ru
Subject: [GIT PULL rcu/next] RCU commits for 4.5
Hello, Ingo,
The changes in this series include the following:
1. Adding transitivity uniformly to rcu_node structure ->lock
acquisitions. (This is implemented by the first two commits
on top of v4.4-rc2 due to the pervasive nature of this change.)
http://article.gmane.org/gmane.linux.kernel/2100835
2. Documentation updates, including RCU requirements.
http://article.gmane.org/gmane.linux.kernel/2104628
3. Expedited grace-period changes.
http://article.gmane.org/gmane.linux.kernel/2104595
4. Miscellaneous fixes.
http://article.gmane.org/gmane.linux.kernel/2104612
5. Linked-list fixes, courtesy of KTSAN.
http://article.gmane.org/gmane.linux.kernel/2100875
6. Torture-test updates.
http://article.gmane.org/gmane.linux.kernel/2104652
7. Late-breaking fix to sysrq-generated crash.
http://article.gmane.org/gmane.linux.kernel/2111676
All of these changes have been subjected to 0day Test Robot and -next
testing, and are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git for-mingo
for you to fetch changes up to 984cf355aeaa8f2eda3861b50d0e8d3e3f77e83b:
sysrq: Fix warning in sysrq generated crash. (2015-12-29 16:29:18 -0800)
----------------------------------------------------------------
Alexey Kardashevskiy (2):
rcu: Fix comment for rcu_dereference_raw_notrace
list: Add lockless list traversal primitives
Ani Sinha (1):
sysrq: Fix warning in sysrq generated crash.
Chris Metcalf (1):
Documentation/memory-barriers.txt: Fix ACCESS_ONCE thinko
Paul E. McKenney (41):
list: Use WRITE_ONCE() when adding to lists and hlists
list: Use READ_ONCE() when testing for empty lists
rcu: Add transitivity to remaining rcu_node ->lock acquisitions
rcu: Short-circuit synchronize_sched_expedited() if only one CPU
rcu: Clarify role of ->expmaskinitnext
rcu: Move smp_mb() from rcu_seq_snap() to rcu_exp_gp_seq_snap()
rcu: Invert sync_rcu_exp_select_cpus() "if" statement
rcu: Reduce expedited GP memory contention via per-CPU variables
rcu: Make expedited grace periods resolve stall-warning ties
rcu: Add more diagnostics to expedited stall warning messages.
rcu: Add rcu_normal kernel parameter to suppress expediting
rcu: Wire up rcu_end_inkernel_boot()
rcu: Allow expedited grace periods to be disabled at init
rcu: Move lock_class_key to local scope
rcu: Simplify rcu_sched_qs() control flow
rcu: Remove lock-acquisition loop from rcu_read_unlock_special()
rcu: Fix obsolete rcu_bootup_announce_oddness() comment
rcu: Avoid tick_nohz_active checks on NOCBs CPUs
rcu: Stop disabling interrupts in scheduler fastpaths
list: Use WRITE_ONCE() when initializing list_head structures
documentation: Record RCU requirements
Documentation: Record bottom-bit-zero guarantee for ->next
documentation: Cover requirements controlling stall warnings
documentation: Composability analogies
documentation: Expand on scheduler/RCU deadlock requirements
documentation: Clarify RCU memory barriers and requirements
documentation: Update RCU requirements based on expedited changes
rcutorture: Add batch number to script printout
rcutorture: Flag nonexistent RCU GP kthread
rcutorture: Dump stack when GP kthread stalls
rcutorture: Default grace period to three minutes, allow override
rcutorture: Print symbolic name for rcu_torture_writer_state
rcutorture: Print symbolic name for ->gp_state
torture: Abbreviate console error dump
torture: Place console.log files correctly from the get-go
rcu: Remove TINY_RCU bloat from pointless boot parameters
rcu: Eliminate unused rcu_init_one() argument
rcu: Make cpu_needs_another_gp() be bool
rcu: Don't redundantly disable irqs in rcu_irq_{enter,exit}()
rcu: Make rcu_gp_init() be bool rather than int
Merge branches 'doc.2015.12.05a', 'exp.2015.12.07a', 'fixes.2015.12.07a', 'list.2015.12.04b' and 'torture.2015.12.05a' into HEAD
Paul Gortmaker (1):
kernel: Make rcu/tree_trace.c explicitly non-modular
Peter Zijlstra (2):
rcu: Create transitive rnp->lock acquisition functions
rcu: Move wakeup out from under rnp->lock
Petko Manolov (1):
list: Introduces generic list_splice_tail_init_rcu()
Yang Shi (1):
rcutorture: Remove CONFIG_RCU_USER_QS from rcutorture selftest doc
.../RCU/Design/Requirements/2013-08-is-it-dead.png | Bin 0 -> 100825 bytes
.../Design/Requirements/GPpartitionReaders1.svg | 374 +++
.../RCU/Design/Requirements/RCUApplicability.svg | 237 ++
.../Design/Requirements/ReadersPartitionGP1.svg | 639 +++++
.../RCU/Design/Requirements/Requirements.html | 2897 ++++++++++++++++++++
.../RCU/Design/Requirements/Requirements.htmlx | 2741 ++++++++++++++++++
Documentation/RCU/Design/htmlqqz.sh | 108 +
Documentation/kernel-parameters.txt | 29 +-
Documentation/memory-barriers.txt | 8 +-
drivers/tty/sysrq.c | 6 +
include/linux/list.h | 14 +-
include/linux/list_bl.h | 2 +-
include/linux/list_nulls.h | 2 +-
include/linux/rculist.h | 105 +-
include/linux/rcupdate.h | 21 +-
include/linux/rcutiny.h | 8 +
include/linux/rcutree.h | 4 +-
include/linux/tracepoint.h | 4 +-
init/main.c | 2 +
kernel/ksysfs.c | 26 +-
kernel/rcu/rcutorture.c | 24 +-
kernel/rcu/srcu.c | 2 +-
kernel/rcu/tree.c | 313 ++-
kernel/rcu/tree.h | 61 +-
kernel/rcu/tree_plugin.h | 66 +-
kernel/rcu/tree_trace.c | 39 +-
kernel/rcu/update.c | 22 +-
kernel/sched/core.c | 6 +-
lib/list_debug.c | 2 +-
.../selftests/rcutorture/bin/kvm-test-1-run.sh | 9 +-
tools/testing/selftests/rcutorture/bin/kvm.sh | 22 +-
.../selftests/rcutorture/bin/parse-console.sh | 41 +-
.../testing/selftests/rcutorture/doc/TINY_RCU.txt | 1 -
.../selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 4 -
34 files changed, 7552 insertions(+), 287 deletions(-)
create mode 100644 Documentation/RCU/Design/Requirements/2013-08-is-it-dead.png
create mode 100644 Documentation/RCU/Design/Requirements/GPpartitionReaders1.svg
create mode 100644 Documentation/RCU/Design/Requirements/RCUApplicability.svg
create mode 100644 Documentation/RCU/Design/Requirements/ReadersPartitionGP1.svg
create mode 100644 Documentation/RCU/Design/Requirements/Requirements.html
create mode 100644 Documentation/RCU/Design/Requirements/Requirements.htmlx
create mode 100755 Documentation/RCU/Design/htmlqqz.sh
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