Hello, Ingo,
This pull request is unusual in being a single linear set of commits,
as opposed to my usual topic branches. This is due to the many
large-footprint changes, which means that reasonable topic branches
result in large numbers of merge conflicts. In addition, some commits
depend on other commits that should be on different topic branches.
I will return to the topic-branch style next time.
The largest feature of this series is shrinking and simplification,
with the following diffstat summary:
79 files changed, 1496 insertions(+), 4211 deletions(-)
In other words, this series represents a net reduction of more than 2700
lines of code.
These commits were posted to LKML:
http://lkml.kernel.org/r/20170525215934.ga11...@linux.vnet.ibm.com
Two of these commits (46/88 and 48/88) have been deferred, most likely
to v4.14. All of the remaining commits have been subjected to the 0day
Test Robot and -next testing, and are availiable in teh 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 6d48152eafde1f0d0a4a9e0584fa7d9ff4fbfdac:
rcu: Remove RCU CPU stall warnings from Tiny RCU (2017-06-08 18:52:45 -0700)
----------------------------------------------------------------
Arnd Bergmann (1):
bcm47xx: Fix build regression
Paul E. McKenney (83):
rcutorture: Add lockdep to one of the SRCU scenarios
rcutorture: Add three-level tree test for Tree SRCU
rcutorture: Fix bug in reporting Kconfig mis-settings
rcutorture: Add a scenario for Tiny SRCU
rcutorture: Add a scenario for Classic SRCU
rcu: Prevent rcu_barrier() from starting needless grace periods
rcutorture: Correctly handle CONFIG_RCU_TORTURE_TEST_* options
rcutorture: Update test scenarios based on new Kconfig dependencies
srcu: Eliminate possibility of destructive counter overflow
rcu: Complain if blocking in preemptible RCU read-side critical section
rcuperf: Defer expedited/normal check to end of test
rcuperf: Remove conflicting Kconfig options
rcu: Remove obsolete reference to synchronize_kernel()
rcuperf: Add ability to performance-test call_rcu() and friends
rcuperf: Add a Kconfig-fragment file for Classic SRCU
rcu: Make sync_rcu_preempt_exp_done() return bool
checkpatch: Remove checks for expedited grace periods
rcuperf: Add test for dynamically initialized srcu_struct
doc/atomic_ops: Clarify smp_mb__{before,after}_atomic()
atomics: Add header comment so spin_unlock_wait()
rcuperf: Add the ability to test tiny RCU flavors
srcu: Make Classic and Tree SRCU announce themselves at bootup
rcutorture: Reduce CPUs dedicated to testing Classic SRCU
srcu: Shrink Tiny SRCU a bit more
rcuperf: Set more user-friendly defaults
rcuperf: Add writer_holdoff boot parameter
rcutorture: Add "git diff" output to testid.txt file
srcu: Document auto-expediting requirement
doc: Take tail recursion into account in RCU requirements
rcu: Add preemptibility checks in rcu_sched_qs() and rcu_bh_qs()
rcu: Print out rcupdate.c non-default boot-time settings
rcu: Update rcu_bootup_announce_oddness()
srcu: Make exp_holdoff module parameter be static
srcu: Print non-default exp_holdoff values at boot time
rcu: Add lockdep_assert_held() teeth to tree.c
rcu: Add lockdep_assert_held() teeth to tree_plugin.h
srcu: Make SRCU be once again optional
srcu: Shrink Tiny SRCU a bit
srcu: Add DEBUG_OBJECTS_RCU_HEAD functionality
rcu: Make synchronize_rcu_mult() check for duplicates
sched: Rely on synchronize_rcu_mult() de-duplication
rcu: Use RCU_NOCB_WAKE rather than RCU_NOGP_WAKE
rcu: Add memory barriers for NOCB leader wakeup
rcu: Flag need for rcu_node_tree.h and rcu_segcblist.h visibility
rcu: Move docbook comments out of rcupdate.h
rcu: Move rcu_expedited and rcu_normal externs from rcupdate.h
rcu: Move expediting-related access/control out of rcupdate.h
rcu: Move torture-related definitions from rcupdate.h to rcu.h
rcu: Remove UINT_CMP_GE() and UINT_CMP_LT()
rcu: Move rcupdate.h to new empty-function style
rcu: Eliminate the unused __rcu_is_watching() function
rcu: Move the RCU_SCHEDULER_ definitions from rcupdate.h
rcu: Remove linux/debugobjects.h from rcupdate.h
rcu: Improve __call_rcu() debug-objects error message
rcu: Move rcu_is_nocb_cpu() from rcupdate.h to rcu.h
rcu: Move rcu_ftrace_dump() from rcupdate.h to rcu.h
rcu: move rcupdate.h to the new true/false-function style
rcu: Move torture-related functions out of rcutiny.h and rcutree.h
rcu: Move rcu_request_urgent_qs_task() out of rcutiny.h and rcutree.h
rcu: Move rcutiny.h to new empty/true/false-function style
srcu: Prevent sdp->srcu_gp_seq_needed counter wrap
srcu: Shrink srcu.h by moving docbook and private function
srcu: Apply trivial callback lists to shrink Tiny SRCU
lockdep: Use consistent printing primitives
rcu: Refactor #includes from include/linux/rcupdate.h
rcu: Convert rnp->lock wrappers to macros for SRCU use
rcu: Move rnp->lock wrappers for SRCU use
srcu: Use rnp->lock wrappers to replace explicit memory barriers
rcu: Remove *_SLOW_* Kconfig options
rcu: Remove the RCU_KTHREAD_PRIO Kconfig option
rcu: Remove nohz_full full-system-idle state machine
rcu: Remove #ifdef moving rcu_end_inkernel_boot from rcupdate.h
rcu: Remove typecheck() from RCU locking wrapper functions
rcu: Remove the now-obsolete PROVE_RCU_REPEATEDLY Kconfig option
rcu: Remove SPARSE_RCU_POINTER Kconfig option
srcu: Fix rcutorture-statistics typo
srcu: Remove Classic SRCU
rcu: Remove debugfs tracing
rcu: Eliminate NOCBs CPU-state Kconfig options
rcu: Move RCU non-debug Kconfig options to kernel/rcu
rcu: Move RCU debug Kconfig options to kernel/rcu
rcu: Remove event tracing from Tiny RCU
rcu: Remove RCU CPU stall warnings from Tiny RCU
Priyalee Kushwaha (1):
srcu-cbmc: Use /usr/bin/awk instead of /bin/awk
Stan Drozd (1):
docs: Fix typo in Documentation/memory-barriers.txt
Documentation/RCU/00-INDEX | 2 -
.../RCU/Design/Requirements/Requirements.html | 34 +-
Documentation/RCU/checklist.txt | 8 +-
Documentation/RCU/trace.txt | 535 -----------------
Documentation/admin-guide/kernel-parameters.txt | 41 +-
Documentation/core-api/atomic_ops.rst | 5 +
Documentation/dev-tools/sparse.rst | 6 -
Documentation/kernel-per-CPU-kthreads.txt | 31 +-
Documentation/memory-barriers.txt | 2 +-
Documentation/timers/NO_HZ.txt | 29 +-
include/linux/bcm47xx_nvram.h | 1 +
include/linux/compiler.h | 4 -
include/linux/rcu_node_tree.h | 4 +
include/linux/rcu_segcblist.h | 4 +
include/linux/rcupdate.h | 318 +---------
include/linux/rcutiny.h | 167 +-----
include/linux/rcutree.h | 21 +-
include/linux/spinlock.h | 20 +
include/linux/srcu.h | 25 +-
include/linux/srcuclassic.h | 115 ----
include/linux/srcutiny.h | 47 +-
include/linux/srcutree.h | 13 +-
include/trace/events/rcu.h | 1 +
init/Kconfig | 349 +----------
kernel/locking/lockdep.c | 176 +++---
kernel/rcu/Kconfig | 242 ++++++++
kernel/rcu/Kconfig.debug | 82 +++
kernel/rcu/Makefile | 2 -
kernel/rcu/rcu.h | 277 +++++++++
kernel/rcu/rcuperf.c | 129 +++-
kernel/rcu/rcutorture.c | 21 +-
kernel/rcu/srcu.c | 661 ---------------------
kernel/rcu/srcutiny.c | 86 +--
kernel/rcu/srcutree.c | 187 ++++--
kernel/rcu/tiny.c | 54 +-
kernel/rcu/tiny_plugin.h | 123 ----
kernel/rcu/tree.c | 195 +++---
kernel/rcu/tree.h | 109 +---
kernel/rcu/tree_exp.h | 2 +-
kernel/rcu/tree_plugin.h | 573 +++---------------
kernel/rcu/tree_trace.c | 494 ---------------
kernel/rcu/update.c | 77 ++-
kernel/sched/core.c | 8 +-
kernel/time/Kconfig | 50 --
lib/Kconfig.debug | 184 +-----
lib/Makefile | 3 -
scripts/checkpatch.pl | 17 -
.../selftests/rcutorture/bin/configcheck.sh | 2 +-
.../testing/selftests/rcutorture/bin/kvm-build.sh | 2 +-
tools/testing/selftests/rcutorture/bin/kvm.sh | 5 +-
.../selftests/rcutorture/configs/rcu/CFLIST | 2 +
.../selftests/rcutorture/configs/rcu/SRCU-C.boot | 1 +
.../selftests/rcutorture/configs/rcu/SRCU-N | 2 +-
.../selftests/rcutorture/configs/rcu/SRCU-P | 6 +-
.../selftests/rcutorture/configs/rcu/SRCU-t | 10 +
.../selftests/rcutorture/configs/rcu/SRCU-t.boot | 1 +
.../selftests/rcutorture/configs/rcu/SRCU-u | 9 +
.../selftests/rcutorture/configs/rcu/SRCU-u.boot | 1 +
.../selftests/rcutorture/configs/rcu/TINY02 | 5 +-
.../selftests/rcutorture/configs/rcu/TREE01 | 5 +-
.../selftests/rcutorture/configs/rcu/TREE01.boot | 4 +
.../selftests/rcutorture/configs/rcu/TREE02 | 5 +-
.../selftests/rcutorture/configs/rcu/TREE03 | 4 -
.../selftests/rcutorture/configs/rcu/TREE03.boot | 4 +
.../selftests/rcutorture/configs/rcu/TREE04 | 4 -
.../selftests/rcutorture/configs/rcu/TREE05 | 4 -
.../selftests/rcutorture/configs/rcu/TREE05.boot | 3 +
.../selftests/rcutorture/configs/rcu/TREE06 | 4 +-
.../selftests/rcutorture/configs/rcu/TREE06.boot | 3 +
.../selftests/rcutorture/configs/rcu/TREE07 | 6 -
.../selftests/rcutorture/configs/rcu/TREE08 | 1 -
.../selftests/rcutorture/configs/rcu/TREE08-T | 21 -
.../selftests/rcutorture/configs/rcu/TREE08.boot | 1 +
.../configs/{rcu/TREE02-T => rcuperf/TINY} | 19 +-
.../selftests/rcutorture/configs/rcuperf/TREE | 1 -
.../selftests/rcutorture/configs/rcuperf/TREE54 | 1 -
.../testing/selftests/rcutorture/doc/TINY_RCU.txt | 1 -
.../selftests/rcutorture/doc/TREE_RCU-kconfig.txt | 34 +-
.../rcutorture/formal/srcu-cbmc/modify_srcu.awk | 2 +-
79 files changed, 1496 insertions(+), 4211 deletions(-)
delete mode 100644 Documentation/RCU/trace.txt
delete mode 100644 include/linux/srcuclassic.h
create mode 100644 kernel/rcu/Kconfig
create mode 100644 kernel/rcu/Kconfig.debug
delete mode 100644 kernel/rcu/srcu.c
delete mode 100644 kernel/rcu/tree_trace.c
create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/SRCU-C.boot
create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/SRCU-t
create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/SRCU-t.boot
create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/SRCU-u
create mode 100644 tools/testing/selftests/rcutorture/configs/rcu/SRCU-u.boot
delete mode 100644 tools/testing/selftests/rcutorture/configs/rcu/TREE08-T
rename tools/testing/selftests/rcutorture/configs/{rcu/TREE02-T =>
rcuperf/TINY} (50%)
