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Message-ID: <aDLdBucNJqaA4T4R@gmail.com>
Date: Sun, 25 May 2025 11:04:06 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>, Will Deacon <will@...nel.org>,
Waiman Long <longman@...hat.com>, Boqun Feng <boqun.feng@...il.com>,
Borislav Petkov <bp@...en8.de>, Uros Bizjak <ubizjak@...il.com>,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [GIT PULL] locking changes for v6.16
Linus,
Please pull the latest locking/core Git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking-core-2025-05-25
# HEAD: 94ec70880fd376dd5cc60ba2bd7ddf830b3d4f28 Merge branch 'locking/futex' into locking/core, to pick up pending futex changes
Locking changes for v6.16:
Futexes:
- Add support for task local hash maps (Sebastian Andrzej Siewior,
Peter Zijlstra)
- Implement the FUTEX2_NUMA ABI, which feature extends the futex
interface to be NUMA-aware. On NUMA-aware futexes a second u32
word containing the NUMA node is added to after the u32 futex value
word. (Peter Zijlstra)
- Implement the FUTEX2_MPOL ABI, which feature extends the futex
interface to be mempolicy-aware as well, to further refine futex
node mappings and lookups. (Peter Zijlstra)
Locking primitives:
- Misc cleanups (Andy Shevchenko, Borislav Petkov, Colin Ian King,
Ingo Molnar, Nam Cao, Peter Zijlstra)
Lockdep:
- Prevent abuse of lockdep subclasses (Waiman Long)
- Add number of dynamic keys to /proc/lockdep_stats (Waiman Long)
Plus misc cleanups and fixes.
Note that the tree includes the following dependent out-of-subsystem
changes as well:
- rcuref: Provide rcuref_is_dead()
- mm: Add vmalloc_huge_node()
- mm: Add the mmap_read_lock guard to <linux/mmap_lock.h>
Thanks,
Ingo
------------------>
Andy Shevchenko (1):
locking/lockdep: Move hlock_equal() to the respective #ifdeffery
Borislav Petkov (AMD) (1):
futex: Fix kernel-doc comments
Colin Ian King (1):
selftests/futex: Fix spelling mistake "unitiliazed" -> "uninitialized"
Ingo Molnar (1):
futex: Relax the rcu_assign_pointer() assignment of mm->futex_phash in futex_mm_init()
Nam Cao (1):
futex: Fix outdated comment in struct restart_block
Peter Zijlstra (10):
mm: Add vmalloc_huge_node()
futex: Move futex_queue() into futex_wait_setup()
futex: Pull futex_hash() out of futex_q_lock()
futex: Create hb scopes
futex: Create futex_hash() get/put class
futex: Create private_hash() get/put class
futex: Implement FUTEX2_NUMA
futex: Implement FUTEX2_MPOL
selftests/futex: Build without headers nonsense
futex,selftests: Add another FUTEX2_NUMA selftest
Sebastian Andrzej Siewior (18):
rcuref: Provide rcuref_is_dead()
futex: Acquire a hash reference in futex_wait_multiple_setup()
futex: Decrease the waiter count before the unlock operation
futex: Introduce futex_q_lockptr_lock()
futex: Create helper function to initialize a hash slot
futex: Add basic infrastructure for local task local hash
futex: Allow automatic allocation of process wide futex hash
futex: Allow to resize the private local hash
futex: Allow to make the private hash immutable
tools headers: Synchronize prctl.h ABI header
tools/perf: Allow to select the number of hash buckets
selftests/futex: Add futex_priv_hash
selftests/futex: Add futex_numa_mpol
selftests/futex: Use TAP output in futex_priv_hash
selftests/futex: Use TAP output in futex_numa_mpol
futex: Use RCU_INIT_POINTER() in futex_mm_init().
tools headers: Synchronize prctl.h ABI header
futex: Correct the kernedoc return value for futex_wait_setup().
Waiman Long (2):
locking/lockdep: Prevent abuse of lockdep subclass
locking/lockdep: Add number of dynamic keys to /proc/lockdep_stats
include/linux/futex.h | 36 +-
include/linux/mm_types.h | 7 +-
include/linux/mmap_lock.h | 4 +
include/linux/rcuref.h | 22 +-
include/linux/restart_block.h | 2 +-
include/linux/vmalloc.h | 9 +-
include/uapi/linux/futex.h | 9 +-
include/uapi/linux/prctl.h | 7 +
init/Kconfig | 10 +
io_uring/futex.c | 4 +-
kernel/fork.c | 24 +
kernel/futex/core.c | 803 +++++++++++++++++++--
kernel/futex/futex.h | 74 +-
kernel/futex/pi.c | 308 ++++----
kernel/futex/requeue.c | 460 ++++++------
kernel/futex/waitwake.c | 207 +++---
kernel/locking/lockdep.c | 76 +-
kernel/locking/lockdep_internals.h | 1 +
kernel/locking/lockdep_proc.c | 2 +
kernel/sys.c | 4 +
mm/nommu.c | 18 +-
mm/vmalloc.c | 11 +-
tools/include/uapi/linux/prctl.h | 45 +-
tools/perf/bench/Build | 1 +
tools/perf/bench/futex-hash.c | 7 +
tools/perf/bench/futex-lock-pi.c | 5 +
tools/perf/bench/futex-requeue.c | 6 +
tools/perf/bench/futex-wake-parallel.c | 9 +-
tools/perf/bench/futex-wake.c | 4 +
tools/perf/bench/futex.c | 67 ++
tools/perf/bench/futex.h | 5 +
.../testing/selftests/futex/functional/.gitignore | 6 +-
tools/testing/selftests/futex/functional/Makefile | 7 +-
.../selftests/futex/functional/futex_numa.c | 262 +++++++
.../selftests/futex/functional/futex_numa_mpol.c | 231 ++++++
.../selftests/futex/functional/futex_priv_hash.c | 292 ++++++++
tools/testing/selftests/futex/functional/run.sh | 7 +
tools/testing/selftests/futex/include/futex2test.h | 70 ++
38 files changed, 2523 insertions(+), 599 deletions(-)
create mode 100644 tools/perf/bench/futex.c
create mode 100644 tools/testing/selftests/futex/functional/futex_numa.c
create mode 100644 tools/testing/selftests/futex/functional/futex_numa_mpol.c
create mode 100644 tools/testing/selftests/futex/functional/futex_priv_hash.c
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