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author | Mark Brown <broonie@kernel.org> | 2024-03-13 18:22:15 +0000 |
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committer | Mark Brown <broonie@kernel.org> | 2024-03-13 18:22:15 +0000 |
commit | e25293d9d92cce24aa4ca21b90064661fe4d3fcf (patch) | |
tree | 50f45e19a3e397db28b6681d9bf3975f3c6dee8e /kernel/sched/membarrier.c | |
parent | 23fb6bc2696119391ec3a92ccaffe50e567c515e (diff) | |
parent | e8f897f4afef0031fe618a8e94127a0934896aba (diff) | |
download | linux-stable-e25293d9d92cce24aa4ca21b90064661fe4d3fcf.tar.gz linux-stable-e25293d9d92cce24aa4ca21b90064661fe4d3fcf.tar.bz2 linux-stable-e25293d9d92cce24aa4ca21b90064661fe4d3fcf.zip |
ASoC: Merge up release
In order to apply additional fixes that depend on the fixes merged for
v6.8 merge up the final release.
Diffstat (limited to 'kernel/sched/membarrier.c')
-rw-r--r-- | kernel/sched/membarrier.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/sched/membarrier.c b/kernel/sched/membarrier.c index 2ad881d07752..4e715b9b278e 100644 --- a/kernel/sched/membarrier.c +++ b/kernel/sched/membarrier.c @@ -162,6 +162,9 @@ | MEMBARRIER_PRIVATE_EXPEDITED_RSEQ_BITMASK \ | MEMBARRIER_CMD_GET_REGISTRATIONS) +static DEFINE_MUTEX(membarrier_ipi_mutex); +#define SERIALIZE_IPI() guard(mutex)(&membarrier_ipi_mutex) + static void ipi_mb(void *info) { smp_mb(); /* IPIs should be serializing but paranoid. */ @@ -259,6 +262,7 @@ static int membarrier_global_expedited(void) if (!zalloc_cpumask_var(&tmpmask, GFP_KERNEL)) return -ENOMEM; + SERIALIZE_IPI(); cpus_read_lock(); rcu_read_lock(); for_each_online_cpu(cpu) { @@ -347,6 +351,7 @@ static int membarrier_private_expedited(int flags, int cpu_id) if (cpu_id < 0 && !zalloc_cpumask_var(&tmpmask, GFP_KERNEL)) return -ENOMEM; + SERIALIZE_IPI(); cpus_read_lock(); if (cpu_id >= 0) { @@ -460,6 +465,7 @@ static int sync_runqueues_membarrier_state(struct mm_struct *mm) * between threads which are users of @mm has its membarrier state * updated. */ + SERIALIZE_IPI(); cpus_read_lock(); rcu_read_lock(); for_each_online_cpu(cpu) { |