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authorJakub Kicinski <kuba@kernel.org>2025-09-11 17:37:09 -0700
committerJakub Kicinski <kuba@kernel.org>2025-09-11 17:40:13 -0700
commitfc3a2810412c163b5df1b377d332e048860f45db (patch)
tree9eeb81c7f965176a32ca3062aefcc3532c637b01 /kernel/dma/debug.c
parent5f790208d68fe1526c751dc2af366c7b552b8631 (diff)
parentdb87bd2ad1f736c2f7ab231f9b40c885934f6b2c (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.17-rc6). Conflicts: net/netfilter/nft_set_pipapo.c net/netfilter/nft_set_pipapo_avx2.c c4eaca2e1052 ("netfilter: nft_set_pipapo: don't check genbit from packetpath lookups") 84c1da7b38d9 ("netfilter: nft_set_pipapo: use avx2 algorithm for insertions too") Only trivial adjacent changes (in a doc and a Makefile). Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'kernel/dma/debug.c')
-rw-r--r--kernel/dma/debug.c48
1 files changed, 47 insertions, 1 deletions
diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c
index e43c6de2bce4..b82399437db0 100644
--- a/kernel/dma/debug.c
+++ b/kernel/dma/debug.c
@@ -39,6 +39,7 @@ enum {
dma_debug_sg,
dma_debug_coherent,
dma_debug_resource,
+ dma_debug_noncoherent,
};
enum map_err_types {
@@ -141,6 +142,7 @@ static const char *type2name[] = {
[dma_debug_sg] = "scatter-gather",
[dma_debug_coherent] = "coherent",
[dma_debug_resource] = "resource",
+ [dma_debug_noncoherent] = "noncoherent",
};
static const char *dir2name[] = {
@@ -993,7 +995,8 @@ static void check_unmap(struct dma_debug_entry *ref)
"[mapped as %s] [unmapped as %s]\n",
ref->dev_addr, ref->size,
type2name[entry->type], type2name[ref->type]);
- } else if (entry->type == dma_debug_coherent &&
+ } else if ((entry->type == dma_debug_coherent ||
+ entry->type == dma_debug_noncoherent) &&
ref->paddr != entry->paddr) {
err_printk(ref->dev, entry, "device driver frees "
"DMA memory with different CPU address "
@@ -1581,6 +1584,49 @@ void debug_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
}
}
+void debug_dma_alloc_pages(struct device *dev, struct page *page,
+ size_t size, int direction,
+ dma_addr_t dma_addr,
+ unsigned long attrs)
+{
+ struct dma_debug_entry *entry;
+
+ if (unlikely(dma_debug_disabled()))
+ return;
+
+ entry = dma_entry_alloc();
+ if (!entry)
+ return;
+
+ entry->type = dma_debug_noncoherent;
+ entry->dev = dev;
+ entry->paddr = page_to_phys(page);
+ entry->size = size;
+ entry->dev_addr = dma_addr;
+ entry->direction = direction;
+
+ add_dma_entry(entry, attrs);
+}
+
+void debug_dma_free_pages(struct device *dev, struct page *page,
+ size_t size, int direction,
+ dma_addr_t dma_addr)
+{
+ struct dma_debug_entry ref = {
+ .type = dma_debug_noncoherent,
+ .dev = dev,
+ .paddr = page_to_phys(page),
+ .dev_addr = dma_addr,
+ .size = size,
+ .direction = direction,
+ };
+
+ if (unlikely(dma_debug_disabled()))
+ return;
+
+ check_unmap(&ref);
+}
+
static int __init dma_debug_driver_setup(char *str)
{
int i;