[GIT PULL] RCU changes for v5.13

From: Ingo Molnar
Date: Wed Apr 28 2021 - 03:10:40 EST

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Linus,

Please pull the latest core/rcu git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core-rcu-2021-04-28

# HEAD: 120b566d1df22a0a4543ac0e8aef875c49dd2c21 Merge branch 'for-mingo-rcu' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu

RCU changes for this cycle were:

- Bitmap support for "N" as alias for last bit
- kvfree_rcu updates
- mm_dump_obj() updates. (One of these is to mm, but was suggested by Andrew Morton.)
- RCU callback offloading update
- Polling RCU grace-period interfaces
- Realtime-related RCU updates
- Tasks-RCU updates
- Torture-test updates
- Torture-test scripting updates
- Miscellaneous fixes

Thanks,

Ingo

------------------>
Akira Yokosawa (1):
rculist: Replace reference to atomic_ops.rst

Frederic Weisbecker (11):
rcu: Remove superfluous rdp fetch
rcu/nocb: Detect unsafe checks for offloaded rdp
rcu/nocb: Comment the reason behind BH disablement on batch processing
rcu/nocb: Forbid NOCB toggling on offline CPUs
rcu/nocb: Avoid confusing double write of rdp->nocb_cb_sleep
rcu/nocb: Only (re-)initialize segcblist when needed on CPU up
rcu/nocb: Rename nocb_gp_update_state to nocb_gp_update_state_deoffloading
rcu/nocb: Fix missed nocb_timer requeue
rcu/nocb: Disable bypass when CPU isn't completely offloaded
rcu/nocb: Remove stale comment above rcu_segcblist_offload()
rcu/nocb: Move trace_rcu_nocb_wake() calls outside nocb_lock when possible

Jiapeng Chong (1):
rcu: Make nocb_nobypass_lim_per_jiffy static

Lukas Bulwahn (1):
rcu-tasks: Rectify kernel-doc for struct rcu_tasks

Mauro Carvalho Chehab (1):
rcu: Fix kfree_rcu() docbook errors

Neeraj Upadhyay (1):
rcu: Fix CPU-offline trace in rcutree_dying_cpu

Paul E. McKenney (45):
rcutorture: Use "all" and "N" in "nohz_full" and "rcu_nocbs"
kvfree_rcu: Use __GFP_NOMEMALLOC for single-argument kvfree_rcu()
kvfree_rcu: Make krc_this_cpu_unlock() use raw_spin_unlock_irqrestore()
mm: Don't build mm_dump_obj() on CONFIG_PRINTK=n kernels
rcutorture: Add crude tests for mem_dump_obj()
rcu: Expedite deboost in case of deferred quiescent state
rcutorture: Make TREE03 use real-time tree.use_softirq setting
rcutorture: Fix testing of RCU priority boosting
rcu: Make rcu_read_unlock_special() expedite strict grace periods
torture: Make jitter.sh handle large systems
rcu-tasks: Add block comment laying out RCU Tasks Trace design
torturescript: Don't rerun failed rcutorture builds
torture: Allow 1G of memory for torture.sh kvfree testing
torture: Provide bare-metal modprobe-based advice
torture: Improve readability of the testid.txt file
rcuscale: Disable verbose torture-test output
refscale: Disable verbose torture-test output
torture: Move build/run synchronization files into scenario directories
torture: Use file-based protocol to mark batch's runs complete
torture: Use "jittering" file to control jitter.sh execution
torture: Eliminate jitter_pids file
torture: Reverse jittering and duration parameters for jitter.sh
softirq: Don't try waking ksoftirqd before it has been spawned
docs: Correctly spell Stephen Hemminger's name
rcu: Add explicit barrier() to __rcu_read_unlock()
rcu: Provide polling interfaces for Tree RCU grace periods
torture: Abstract jitter.sh start/stop into scripts
torture: Record TORTURE_KCONFIG_GDB_ARG in qemu-cmd
torture: Extract kvm-test-1-run-qemu.sh from kvm-test-1-run.sh
torture: Record jitter start/stop commands
torture: Record kvm-test-1-run.sh and kvm-test-1-run-qemu.sh PIDs
torture: Remove no-mpstat error message
torture: Rename SRCU-t and SRCU-u to avoid lowercase characters
torture: Make upper-case-only no-dot no-slash scenario names official
torture: De-capitalize TORTURE_SUITE
torture: Create a "batches" file for build reuse
torture: Add kvm-again.sh to rerun a previous torture-test
torture: Add --duration argument to kvm-again.sh
torture: Make kvm-transform.sh update jitter commands
torture: Make TORTURE_TRUST_MAKE available in kvm-again.sh environment
torture: Print proper vmlinux path for kvm-again.sh runs
torture: Consolidate qemu-cmd duration editing into kvm-transform.sh
torture: Fix kvm.sh --datestamp regex check
rcu: Provide polling interfaces for Tiny RCU grace periods
rcutorture: Test start_poll_synchronize_rcu() and poll_state_synchronize_rcu()

Paul Gortmaker (8):
lib: test_bitmap: clearly separate ERANGE from EINVAL tests.
lib: test_bitmap: add tests to trigger ERANGE case.
lib: test_bitmap: add more start-end:offset/len tests
lib: bitmap: fold nbits into region struct
lib: bitmap: move ERANGE check from set_region to check_region
lib: bitmap: support "N" as an alias for size of bitmap
lib: test_bitmap: add tests for "N" alias
rcu: deprecate "all" option to rcu_nocbs=

Sangmoon Kim (1):
rcu/tree: Add a trace event for RCU CPU stall warnings

Stephen Zhang (2):
torture: Replace torture_init_begin string with %s
rcutorture: Replace rcu_torture_stall string with %s

Uladzislau Rezki (Sony) (4):
kvfree_rcu: Directly allocate page for single-argument case
kvfree_rcu: Replace __GFP_RETRY_MAYFAIL by __GFP_NORETRY
kvfree_rcu: Use same set of GFP flags as does single-argument
rcuscale: Add kfree_rcu() single-argument scale test

Zhouyi Zhou (1):
rcu: Remove spurious instrumentation_end() in rcu_nmi_enter()

Documentation/RCU/RTFP.txt | 2 +-
Documentation/admin-guide/kernel-parameters.rst | 7 +
Documentation/admin-guide/kernel-parameters.txt | 16 +-
include/linux/mm.h | 4 +
include/linux/rcu_segcblist.h | 7 +-
include/linux/rculist_nulls.h | 2 +-
include/linux/rcupdate.h | 2 +-
include/linux/rcutiny.h | 7 +-
include/linux/rcutree.h | 2 +
include/linux/slab.h | 2 +
include/linux/vmalloc.h | 2 +-
include/trace/events/rcu.h | 28 +++
kernel/rcu/rcu_segcblist.c | 3 +-
kernel/rcu/rcuscale.c | 15 +-
kernel/rcu/rcutorture.c | 93 +++++---
kernel/rcu/tasks.h | 40 +++-
kernel/rcu/tiny.c | 40 ++++
kernel/rcu/tree.c | 169 ++++++++++----
kernel/rcu/tree_exp.h | 1 +
kernel/rcu/tree_plugin.h | 252 ++++++++++++++-------
kernel/rcu/tree_stall.h | 2 +
kernel/softirq.c | 2 +-
kernel/torture.c | 6 +-
lib/bitmap.c | 49 ++--
lib/test_bitmap.c | 46 +++-
mm/slab.c | 2 +
mm/slab.h | 2 +
mm/slab_common.c | 4 +
mm/slob.c | 2 +
mm/slub.c | 2 +
mm/util.c | 3 +
mm/vmalloc.c | 2 +
tools/testing/selftests/rcutorture/bin/cpus2use.sh | 1 -
tools/testing/selftests/rcutorture/bin/jitter.sh | 20 +-
.../selftests/rcutorture/bin/jitterstart.sh | 37 +++
.../testing/selftests/rcutorture/bin/jitterstop.sh | 23 ++
.../testing/selftests/rcutorture/bin/kvm-again.sh | 199 ++++++++++++++++
.../selftests/rcutorture/bin/kvm-recheck.sh | 2 +-
.../rcutorture/bin/kvm-test-1-run-batch.sh | 67 ++++++
.../rcutorture/bin/kvm-test-1-run-qemu.sh | 176 ++++++++++++++
.../selftests/rcutorture/bin/kvm-test-1-run.sh | 218 ++++++------------
.../selftests/rcutorture/bin/kvm-transform.sh | 54 ++++-
tools/testing/selftests/rcutorture/bin/kvm.sh | 98 ++++----
tools/testing/selftests/rcutorture/bin/torture.sh | 2 +-
.../selftests/rcutorture/configs/rcu/CFLIST | 4 +-
.../rcutorture/configs/rcu/{SRCU-t => SRCU-T} | 0
.../configs/rcu/{SRCU-t.boot => SRCU-T.boot} | 0
.../rcutorture/configs/rcu/{SRCU-u => SRCU-U} | 0
.../configs/rcu/{SRCU-u.boot => SRCU-U.boot} | 0
.../selftests/rcutorture/configs/rcu/TREE03.boot | 1 +
.../selftests/rcutorture/configs/rcu/TREE04.boot | 2 +-
.../selftests/rcutorture/configs/rcu/TREE08.boot | 2 +-
.../rcutorture/configs/rcuscale/ver_functions.sh | 2 +-
.../rcutorture/configs/refscale/ver_functions.sh | 2 +-
54 files changed, 1304 insertions(+), 422 deletions(-)
create mode 100644 tools/testing/selftests/rcutorture/bin/jitterstart.sh
create mode 100644 tools/testing/selftests/rcutorture/bin/jitterstop.sh
create mode 100755 tools/testing/selftests/rcutorture/bin/kvm-again.sh
create mode 100755 tools/testing/selftests/rcutorture/bin/kvm-test-1-run-batch.sh
create mode 100755 tools/testing/selftests/rcutorture/bin/kvm-test-1-run-qemu.sh
rename tools/testing/selftests/rcutorture/configs/rcu/{SRCU-t => SRCU-T} (100%)
rename tools/testing/selftests/rcutorture/configs/rcu/{SRCU-t.boot => SRCU-T.boot} (100%)
rename tools/testing/selftests/rcutorture/configs/rcu/{SRCU-u => SRCU-U} (100%)
rename tools/testing/selftests/rcutorture/configs/rcu/{SRCU-u.boot => SRCU-U.boot} (100%)

Next message: Greg Kroah-Hartman: "Re: [PATCH 031/190] Revert "test_objagg: Fix potential memory leak in error handling""
Previous message: Roger Lu: "[PATCH v16 3/7] soc: mediatek: SVS: introduce MTK SVS engine"
Next in thread: pr-tracker-bot: "Re: [GIT PULL] RCU changes for v5.13"
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