With no callers left, we can clean up this part of dma-debug's exposed internals, making way to tweak the allocation behaviour.
Signed-off-by: Robin Murphy <robin.mur...@arm.com> --- v2: New include/linux/dma-debug.h | 7 ------- kernel/dma/debug.c | 30 ------------------------------ 2 files changed, 37 deletions(-) diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h index 30213adbb6b9..46e6131a72b6 100644 --- a/include/linux/dma-debug.h +++ b/include/linux/dma-debug.h @@ -30,8 +30,6 @@ struct bus_type; extern void dma_debug_add_bus(struct bus_type *bus); -extern int dma_debug_resize_entries(u32 num_entries); - extern void debug_dma_map_single(struct device *dev, const void *addr, unsigned long len); @@ -101,11 +99,6 @@ static inline void dma_debug_add_bus(struct bus_type *bus) { } -static inline int dma_debug_resize_entries(u32 num_entries) -{ - return 0; -} - static inline void debug_dma_map_single(struct device *dev, const void *addr, unsigned long len) { diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c index cd9a12bf6a3a..2202402afe9a 100644 --- a/kernel/dma/debug.c +++ b/kernel/dma/debug.c @@ -756,36 +756,6 @@ static void dma_entry_free(struct dma_debug_entry *entry) spin_unlock_irqrestore(&free_entries_lock, flags); } -int dma_debug_resize_entries(u32 num_entries) -{ - int i, delta, ret = 0; - unsigned long flags; - struct dma_debug_entry *entry; - - spin_lock_irqsave(&free_entries_lock, flags); - - if (nr_total_entries < num_entries) { - delta = num_entries - nr_total_entries; - - ret = dma_debug_add_entries(delta, GFP_ATOMIC); - } else { - delta = nr_total_entries - num_entries; - - for (i = 0; i < delta && !list_empty(&free_entries); i++) { - entry = __dma_entry_alloc(); - kfree(entry); - } - - nr_total_entries -= i; - if (nr_total_entries != num_entries) - ret = -EBUSY; - } - - spin_unlock_irqrestore(&free_entries_lock, flags); - - return ret; -} - /* * DMA-API debugging init code * -- 2.19.1.dirty _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu