diff mbox series

[v2,5/6] iommu/arm-smmu-v3: Batch context descriptor invalidation

Message ID 20200224165846.345993-6-jean-philippe@linaro.org (mailing list archive)
State Mainlined
Commit edd0351e7bc49555d8b5ad8438a65a7ca262c9f0
Headers show
Series iommu/arm-smmu-v3: Finish PASID support and command queue batching | expand

Commit Message

Jean-Philippe Brucker Feb. 24, 2020, 4:58 p.m. UTC
Rather than publishing one command at a time when invalidating a context
descriptor, batch the commands for all SIDs in the domain.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
---
 drivers/iommu/arm-smmu-v3.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index beeec366bc41..12b2a0fa747e 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -1512,6 +1512,7 @@  static void arm_smmu_sync_cd(struct arm_smmu_domain *smmu_domain,
 	size_t i;
 	unsigned long flags;
 	struct arm_smmu_master *master;
+	struct arm_smmu_cmdq_batch cmds = {};
 	struct arm_smmu_device *smmu = smmu_domain->smmu;
 	struct arm_smmu_cmdq_ent cmd = {
 		.opcode	= CMDQ_OP_CFGI_CD,
@@ -1525,12 +1526,12 @@  static void arm_smmu_sync_cd(struct arm_smmu_domain *smmu_domain,
 	list_for_each_entry(master, &smmu_domain->devices, domain_head) {
 		for (i = 0; i < master->num_sids; i++) {
 			cmd.cfgi.sid = master->sids[i];
-			arm_smmu_cmdq_issue_cmd(smmu, &cmd);
+			arm_smmu_cmdq_batch_add(smmu, &cmds, &cmd);
 		}
 	}
 	spin_unlock_irqrestore(&smmu_domain->devices_lock, flags);
 
-	arm_smmu_cmdq_issue_sync(smmu);
+	arm_smmu_cmdq_batch_submit(smmu, &cmds);
 }
 
 static int arm_smmu_alloc_cd_leaf_table(struct arm_smmu_device *smmu,