diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2026-05-12 02:56:17 +0000 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-06-02 12:26:07 +0200 |
| commit | 1628b25248d0742b2ce9c7cfa59cd183e35f37e1 (patch) | |
| tree | 6f204daf3a4dcc54e962e2fba54fa8bc18211068 /init | |
| parent | 4c2a20413d7fb3fc3dd7adf233a4f82bb203fb58 (diff) | |
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
Diffstat (limited to 'init')
| -rw-r--r-- | init/init_task.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/init/init_task.c b/init/init_task.c index 3ecd66fbd563..674d174e2e6a 100644 --- a/init/init_task.c +++ b/init/init_task.c @@ -200,6 +200,7 @@ struct task_struct init_task __aligned(L1_CACHE_BYTES) = { .mems_allowed_seq = SEQCNT_SPINLOCK_ZERO(init_task.mems_allowed_seq, &init_task.alloc_lock), #endif + .blocked_donor = NULL, #ifdef CONFIG_RT_MUTEXES .pi_waiters = RB_ROOT_CACHED, .pi_top_task = NULL, |