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bpf: Adjust return value for queue destruction in rqspinlock

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Return -ETIMEDOUT whenever non-head waiters are signalled by head, and fix
oversight in commit 7bd6e5ce5b ("rqspinlock: Disable queue destruction for
deadlocks"). We no longer signal on deadlocks.

Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Reviewed-by: Amery Hung <ameryhung@gmail.com>
Link: https://lore.kernel.org/r/20251111013827.1853484-1-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Kumar Kartikeya Dwivedi
2025-11-11 01:38:27 +00:00
committed by Alexei Starovoitov
parent f8c67d8550
commit 3249e8a17e
1 changed files with 1 additions and 1 deletions
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2
kernel/bpf/rqspinlock.c
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@@ -537,7 +537,7 @@ queue:
val = arch_mcs_spin_lock_contended(&node->locked);
if (val == RES_TIMEOUT_VAL) {
ret = -EDEADLK;
ret = -ETIMEDOUT;
goto waitq_timeout;
}