Messages in this thread Patch in this message |  | | From | Chao Gao <> | Subject | [RESEND PATCH 1/3] swiotlb: remove unused fields in io_tlb_mem | Date | Mon, 18 Jul 2022 09:16:05 +0800 |
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Commit 20347fca71a3 ("swiotlb: split up the global swiotlb lock") splits io_tlb_mem into multiple areas. Each area has its own lock and index. The global ones are not used so remove them.
Signed-off-by: Chao Gao <chao.gao@intel.com> --- include/linux/swiotlb.h | 5 ----- kernel/dma/swiotlb.c | 2 -- 2 files changed, 7 deletions(-)
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index f65ff1930120..d3ae03edbbd2 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -79,11 +79,8 @@ dma_addr_t swiotlb_map(struct device *dev, phys_addr_t phys, * @used: The number of used IO TLB block. * @list: The free list describing the number of free entries available * from each index. - * @index: The index to start searching in the next round. * @orig_addr: The original address corresponding to a mapped entry. * @alloc_size: Size of the allocated buffer. - * @lock: The lock to protect the above data structures in the map and - * unmap calls. * @debugfs: The dentry to debugfs. * @late_alloc: %true if allocated using the page allocator * @force_bounce: %true if swiotlb bouncing is forced @@ -97,8 +94,6 @@ struct io_tlb_mem { void *vaddr; unsigned long nslabs; unsigned long used; - unsigned int index; - spinlock_t lock; struct dentry *debugfs; bool late_alloc; bool force_bounce; diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index dcf1459ce723..0d0f99146360 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -253,14 +253,12 @@ static void swiotlb_init_io_tlb_mem(struct io_tlb_mem *mem, phys_addr_t start, mem->nslabs = nslabs; mem->start = start; mem->end = mem->start + bytes; - mem->index = 0; mem->late_alloc = late_alloc; mem->nareas = nareas; mem->area_nslabs = nslabs / mem->nareas; mem->force_bounce = swiotlb_force_bounce || (flags & SWIOTLB_FORCE); - spin_lock_init(&mem->lock); for (i = 0; i < mem->nareas; i++) { spin_lock_init(&mem->areas[i].lock); mem->areas[i].index = 0; -- 2.25.1
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