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| author | Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | 2021-02-17 11:56:51 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2021-03-06 12:40:21 +0100 |
| commit | ce29ddc47b91f97e7f69a0fb7cbb5845f52a9825 (patch) | |
| tree | c78f7da880f9002fe60aa2de83f73976757acd66 /scripts/bpf_helpers_doc.py | |
| parent | 50caf9c14b1498c90cf808dbba2ca29bd32ccba4 (diff) | |
| download | lwn-ce29ddc47b91f97e7f69a0fb7cbb5845f52a9825.tar.gz lwn-ce29ddc47b91f97e7f69a0fb7cbb5845f52a9825.zip | |
sched/membarrier: fix missing local execution of ipi_sync_rq_state()
The function sync_runqueues_membarrier_state() should copy the
membarrier state from the @mm received as parameter to each runqueue
currently running tasks using that mm.
However, the use of smp_call_function_many() skips the current runqueue,
which is unintended. Replace by a call to on_each_cpu_mask().
Fixes: 227a4aadc75b ("sched/membarrier: Fix p->mm->membarrier_state racy load")
Reported-by: Nadav Amit <nadav.amit@gmail.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: stable@vger.kernel.org # 5.4.x+
Link: https://lore.kernel.org/r/74F1E842-4A84-47BF-B6C2-5407DFDD4A4A@gmail.com
Diffstat (limited to 'scripts/bpf_helpers_doc.py')
0 files changed, 0 insertions, 0 deletions