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Message-ID: <1498484330-10840-6-git-send-email-thunder.leizhen@huawei.com>
Date: Mon, 26 Jun 2017 21:38:50 +0800
From: Zhen Lei <thunder.leizhen@...wei.com>
To: Will Deacon <will.deacon@....com>, Joerg Roedel <joro@...tes.org>,
linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
iommu <iommu@...ts.linux-foundation.org>,
Robin Murphy <robin.murphy@....com>,
linux-kernel <linux-kernel@...r.kernel.org>
CC: Zefan Li <lizefan@...wei.com>, Xinwei Hu <huxinwei@...wei.com>,
"Tianhong Ding" <dingtianhong@...wei.com>,
Hanjun Guo <guohanjun@...wei.com>,
Zhen Lei <thunder.leizhen@...wei.com>,
John Garry <john.garry@...wei.com>
Subject: [PATCH 5/5] iommu/io-pgtable: delete member tlb_sync_pending of struct io_pgtable
This member is unused now, because the previous patches ensured that each
unmap will always be followed by tlb sync operation.
By the way, ->tlb_flush_all executes tlb_sync by itself.
Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
drivers/iommu/io-pgtable.h | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/drivers/iommu/io-pgtable.h b/drivers/iommu/io-pgtable.h
index 7b3fc04..43ddf1f 100644
--- a/drivers/iommu/io-pgtable.h
+++ b/drivers/iommu/io-pgtable.h
@@ -166,7 +166,6 @@ void free_io_pgtable_ops(struct io_pgtable_ops *ops);
struct io_pgtable {
enum io_pgtable_fmt fmt;
void *cookie;
- bool tlb_sync_pending;
struct io_pgtable_cfg cfg;
struct io_pgtable_ops ops;
};
@@ -176,22 +175,17 @@ struct io_pgtable {
static inline void io_pgtable_tlb_flush_all(struct io_pgtable *iop)
{
iop->cfg.tlb->tlb_flush_all(iop->cookie);
- iop->tlb_sync_pending = true;
}
static inline void io_pgtable_tlb_add_flush(struct io_pgtable *iop,
unsigned long iova, size_t size, size_t granule, bool leaf)
{
iop->cfg.tlb->tlb_add_flush(iova, size, granule, leaf, iop->cookie);
- iop->tlb_sync_pending = true;
}
static inline void io_pgtable_tlb_sync(struct io_pgtable *iop)
{
- if (iop->tlb_sync_pending) {
- iop->cfg.tlb->tlb_sync(iop->cookie);
- iop->tlb_sync_pending = false;
- }
+ iop->cfg.tlb->tlb_sync(iop->cookie);
}
/**
--
2.5.0
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