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Message-Id: <20250117172440.49319-1-urezki@gmail.com>
Date: Fri, 17 Jan 2025 18:24:40 +0100
From: "Uladzislau Rezki (Sony)" <urezki@...il.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: RCU <rcu@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>,
"Paul E . McKenney" <paulmck@...nel.org>,
Feng Lee <379943137@...com>,
Neeraj upadhyay <Neeraj.Upadhyay@....com>,
Boqun Feng <boqun.feng@...il.com>,
Joel Fernandes <joel@...lfernandes.org>,
Frederic Weisbecker <frederic@...nel.org>,
Uladzislau Rezki <urezki@...il.com>,
Oleksiy Avramchenko <oleksiy.avramchenko@...y.com>
Subject: [GIT PULL] RCU changes for v6.14
Hi Linus,
Please pull the latest RCU git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux.git tags/rcu.release.v6.14
# HEAD: 4b5c2205526cc1579b840893b98eb7545220f7cf:
Merge branches 'fixes.2024.12.14a', 'rcutorture.2024.12.14a', 'srcu.2024.12.14a' and 'torture-test.2024.12.14a' into rcu-merge.2024.12.14a
fixes.2024.12.14a: RCU fixes
rcutorture.2024.12.14a: Torture-test updates
srcu.2024.12.14a: SRCU updates
torture-test.2024.12.14a: Adding an extra test, fixes
One merge conflicts was detected by linux-next:
* https://lore.kernel.org/lkml/20241220133738.1beae531@canb.auug.org.au/T/
The conflict resolution from linux-next look good to me, plus I make
my own resolutions at branch merge/rcu.2024.12.21a for your reference.
----------------------------------------------------------------
RCU pull request for v6.14
This pull request contains the following branches:
fixes.2024.12.14a: Misc fixes, check if IRQs are disabled in rcu_exp_need_qs(),
instrument KCSAN exclusive-writer assertions, add extra WARN_ON_ONCE() check,
set the cpu_no_qs.b.exp under lock, warn if callback enqueued on offline CPU.
rcutorture.2024.12.14a: Torture-test updates, add rcutorture.preempt_duration kernel
module parameter, make the TREE03 scenario do preemption, improve pooling timeouts
for rcu_torture_writer(), improve output of "Failure/close-call rcutorture reader
segments", add some reader-state debugging checks, update doc of polled APIs, add
extra diagnostics for per-reader-segment preemption.
srcu.2024.12.14a: SRCU updates, improve doc for srcu_read_lock() in terms of return
value, fix typo in comments, remove redundant GP sequence checks in the
srcu_funnel_gp_start.
torture-test.2024.12.14a: Add an extra test for sched_clock(), improve testing
on unresponsive systems.
----------------------------------------------------------------
Feng Lee (1):
srcu: Remove redundant GP sequence checks in srcu_funnel_gp_start
Frederic Weisbecker (1):
rcu: Report callbacks enqueued on offline CPU blind spot
Paul E. McKenney (29):
refscale: Add test for sched_clock()
torture: Make kvm-remote.sh give up on unresponsive system
torture: Add dowarn argument to torture_sched_setaffinity()
rcutorture: Add random real-time preemption
rcutorture: Make the TREE03 scenario do preemption
rcutorture: Decorate failing reader segments with CPU ID
rcutorture: Use finer-grained timeouts for rcu_torture_writer() polling
rcutorture: Add ->cond_sync_exp_full function to rcu_ops structure
rcutorture: Check preemption for failing reader
rcutorture: Decorate failing reader segments with last CPU ID
rcutorture: Add full read-side contexts to "busted" torture type
rcutorture: Pretty-print rcutorture reader segments
rcutorture: Make rcutorture_one_extend() check reader state
rcutorture: Ignore attempts to test preemption and forward progress
rcutorture: Add documentation for recent conditional and polled APIs
rcutorture: Add parameters to control polled/conditional wait interval
rcutorture: Add preempt_count() to rcutorture_one_extend_check() diagnostics
rcutorture: Read CPU ID for decoration protected by both reader types
rcutorture: Add per-reader-segment preemption diagnostics
rcutorture: Use symbols for SRCU reader flavors
rcu: Make rcu_report_exp_cpu_mult() caller acquire lock
rcu: Move rcu_report_exp_rdp() setting of ->cpu_no_qs.b.exp under lock
rcu: Replace open-coded rcu_exp_need_qs() from rcu_exp_handler() with call
rcu: Make preemptible rcu_exp_handler() check idempotency
rcu: Add KCSAN exclusive-writer assertions for rdp->cpu_no_qs.b.exp
rcu: Add lockdep_assert_irqs_disabled() to rcu_exp_need_qs()
MAINTAINERS: Update RCU git tree
srcu: Guarantee non-negative return value from srcu_read_lock()
srcu: Fix typo s/srcu_check_read_flavor()/__srcu_check_read_flavor()/
Documentation/admin-guide/kernel-parameters.txt | 74 ++++++++++++++++++++
MAINTAINERS | 10 +-
Makefile | 2
arch/x86/kernel/cpu/amd.c | 2
include/linux/rcupdate_wait.h | 11 +++
include/linux/srcu.h | 15 ++--
include/linux/srcutree.h | 2
include/linux/torture.h | 2
kernel/bpf/lpm_trie.c | 44 +++++-------
kernel/locking/locktorture.c | 6 -
kernel/rcu/Kconfig.debug | 15 ++++
kernel/rcu/rcutorture.c | 2
kernel/rcu/refscale.c | 40 ++++++++++-
kernel/rcu/srcutree.c | 3
kernel/rcu/tree.c | 3
kernel/rcu/tree_exp.h | 20 +++--
kernel/rcu/tree_plugin.h | 1
kernel/rcu/update.c | 4 -
scripts/mod/modpost.c | 2
scripts/package/install-extmod-build | 4 -
tools/testing/selftests/bpf/.gitignore | 1
tools/testing/selftests/bpf/Makefile | 2
tools/testing/selftests/bpf/map_tests/lpm_trie_map_basic_ops.c | 10 --
tools/testing/selftests/rcutorture/bin/kvm-remote.sh | 25 +++++-
tools/testing/selftests/rcutorture/configs/rcu/TREE03.boot | 1
include/linux/srcu.h | 21 +++--
include/linux/srcutree.h | 8 --
kernel/bpf/lpm_trie.c | 87 +++++++++++++++---------
kernel/rcu/Kconfig.debug | 16 ++++
kernel/rcu/rcutorture.c | 279 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-----------------
kernel/rcu/srcutree.c | 5 -
kernel/rcu/tree_exp.h | 128 ++++++++++++++++++++++-------------
kernel/rcu/tree_plugin.h | 1
tools/testing/selftests/bpf/map_tests/lpm_trie_map_basic_ops.c | 395 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
37 files changed, 1033 insertions(+), 235 deletions(-)
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