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| author | Andrea Parri <parri.andrea@gmail.com> | 2024-01-31 15:49:35 +0100 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-02-15 17:04:13 +0100 |
| commit | 4ff4c745a16c4c151a71863420811e7f406c3ec2 (patch) | |
| tree | fcda33acb75221cff1faee8582ab99e6ee96adbf /kernel/sched | |
| parent | membarrier: Create Documentation/scheduler/membarrier.rst (diff) | |
| download | linux-4ff4c745a16c4c151a71863420811e7f406c3ec2.tar.xz linux-4ff4c745a16c4c151a71863420811e7f406c3ec2.zip | |
locking: Introduce prepare_sync_core_cmd()
Introduce an architecture function that architectures can use to set
up ("prepare") SYNC_CORE commands.
The function will be used by RISC-V to update its "deferred icache-
flush" data structures (icache_stale_mask).
Architectures defining prepare_sync_core_cmd() static inline need to
select ARCH_HAS_PREPARE_SYNC_CORE_CMD.
Suggested-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Andrea Parri <parri.andrea@gmail.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/r/20240131144936.29190-4-parri.andrea@gmail.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/membarrier.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sched/membarrier.c b/kernel/sched/membarrier.c index f3d91628d6b8..6d1f31b3a967 100644 --- a/kernel/sched/membarrier.c +++ b/kernel/sched/membarrier.c @@ -320,6 +320,7 @@ static int membarrier_private_expedited(int flags, int cpu_id) MEMBARRIER_STATE_PRIVATE_EXPEDITED_SYNC_CORE_READY)) return -EPERM; ipi_func = ipi_sync_core; + prepare_sync_core_cmd(mm); } else if (flags == MEMBARRIER_FLAG_RSEQ) { if (!IS_ENABLED(CONFIG_RSEQ)) return -EINVAL; |