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1628b25248
linux/kernel/locking
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Peter Zijlstra 1628b25248 sched: Add blocked_donor link to task for smarter mutex handoffs 
Add link to the task this task is proxying for, and use it so
the mutex owner can do an intelligent hand-off of the mutex to
the task that the owner is running on behalf.

[jstultz: This patch was split out from larger proxy patch]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Juri Lelli <juri.lelli@redhat.com>
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Connor O'Brien <connoro@google.com>
Signed-off-by: John Stultz <jstultz@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260512025635.2840817-8-jstultz@google.com
2026-06-02 12:26:07 +02:00
..
irqflag-debug.c
lock_events_list.h bpf_res_spin_lock 2025-03-30 13:06:27 -07:00
lock_events.c
lock_events.h
lockdep_internals.h locking/lockdep: Change 'static const' variables to enum values 2025-07-14 21:57:29 -07:00
lockdep_proc.c locking/lockdep: Avoid struct return in lock_stats() 2025-07-14 21:57:20 -07:00
lockdep_states.h
lockdep.c lockdep: Speed up lockdep_unregister_key() with expedited RCU synchronization 2025-07-14 21:57:29 -07:00
locktorture.c Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses 2026-02-22 08:26:33 -08:00
Makefile locking/rwsem: Add context analysis 2026-03-08 11:06:53 +01:00
mcs_spinlock.h locking: Allow obtaining result of arch_mcs_spin_lock_contended 2025-03-19 08:03:04 -07:00
mutex-debug.c Scheduler changes for v7.1: 2026-04-14 13:33:36 -07:00
mutex.c sched: Add blocked_donor link to task for smarter mutex handoffs 2026-06-02 12:26:07 +02:00
mutex.h Scheduler changes for v7.1: 2026-04-14 13:33:36 -07:00
osq_lock.c locking/osq_lock: Use atomic_try_cmpxchg_release() in osq_unlock() 2024-10-25 10:01:50 +02:00
percpu-rwsem.c locking/percpu-rwsem: add freezable alternative to down_read 2025-04-07 09:37:16 +02:00
qrwlock.c
qspinlock_paravirt.h locking/pvqspinlock: Convert fields of 'enum vcpu_state' to uppercase 2024-10-17 21:21:16 -07:00
qspinlock_stat.h
qspinlock.c locking: Move common qspinlock helpers to a private header 2025-03-19 08:02:29 -07:00
qspinlock.h locking: Move common qspinlock helpers to a private header 2025-03-19 08:02:29 -07:00
rtmutex_api.c locking/rtmutex: Add context analysis 2026-03-08 11:06:53 +01:00
rtmutex_common.h locking/rtmutex: Add context analysis 2026-03-08 11:06:53 +01:00
rtmutex.c rtmutex: Use waiter::task instead of current in remove_waiter() 2026-04-21 00:22:31 +02:00
rwbase_rt.c locking/rwsem: Add context analysis 2026-03-08 11:06:53 +01:00
rwsem.c locking/rwsem: Fix logic error in rwsem_del_waiter() 2026-03-16 13:16:48 +01:00
semaphore.c locking/semaphore: Remove the list_head from struct semaphore 2026-03-08 11:06:52 +01:00
spinlock_debug.c locking/spinlock/debug: Fix data-race in do_raw_write_lock 2025-10-21 12:31:55 +02:00
spinlock_rt.c Scheduler changes for v6.13: 2024-11-19 14:16:06 -08:00
spinlock.c locking: Add lock context annotations in the spinlock implementation 2026-03-16 13:16:50 +01:00
test-ww_mutex.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
ww_mutex.h locking/mutex: Fix ww_mutex wait_list operations 2026-04-23 10:05:49 +02:00
ww_rt_mutex.c locking/rtmutex: Add context analysis 2026-03-08 11:06:53 +01:00