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authorRobin Murphy <robin.murphy@arm.com>2018-12-10 14:00:32 +0000
committerChristoph Hellwig <hch@lst.de>2018-12-11 14:32:13 +0100
commit0cb0e25e421436a83ee39857923e4213b983e463 (patch)
tree3dbd76ab5d9d32e9a0ff32f9c3828cea2610f0bc /kernel/dma/debug.c
parenta8a4c98fc9ac84ee9e068fbb16210d2ab8cfefe0 (diff)
dma/debug: Remove dma_debug_resize_entries()
With the only caller now gone, we can clean up this part of dma-debug's exposed internals and make way to tweak the allocation behaviour. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Tested-by: Qian Cai <cai@lca.pw> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'kernel/dma/debug.c')
-rw-r--r--kernel/dma/debug.c46
1 files changed, 0 insertions, 46 deletions
diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c
index 912c23f4c177..36a42874b05f 100644
--- a/kernel/dma/debug.c
+++ b/kernel/dma/debug.c
@@ -755,52 +755,6 @@ 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;
- LIST_HEAD(tmp);
-
- spin_lock_irqsave(&free_entries_lock, flags);
-
- if (nr_total_entries < num_entries) {
- delta = num_entries - nr_total_entries;
-
- spin_unlock_irqrestore(&free_entries_lock, flags);
-
- for (i = 0; i < delta; i++) {
- entry = kzalloc(sizeof(*entry), GFP_KERNEL);
- if (!entry)
- break;
-
- list_add_tail(&entry->list, &tmp);
- }
-
- spin_lock_irqsave(&free_entries_lock, flags);
-
- list_splice(&tmp, &free_entries);
- nr_total_entries += i;
- num_free_entries += i;
- } 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 = 1;
-
- spin_unlock_irqrestore(&free_entries_lock, flags);
-
- return ret;
-}
-
/*
* DMA-API debugging init code
*