Commit 5499d01c authored by Michael Kelley's avatar Michael Kelley Committed by Christoph Hellwig
Browse files

swiotlb: fix debugfs reporting of reserved memory pools 



For io_tlb_nslabs, the debugfs code reports the correct value for a
specific reserved memory pool.  But for io_tlb_used, the value reported
is always for the default pool, not the specific reserved pool. Fix this.

Fixes: 5c850d31 ("swiotlb: fix passing local variable to debugfs_create_ulong()")
Signed-off-by: default avatarMichael Kelley <mikelley@microsoft.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent a90922fa

kernel/dma/swiotlb.c

+4 −2
Original line number Diff line number Diff line
@@ -930,7 +930,9 @@ EXPORT_SYMBOL_GPL(is_swiotlb_active); 


static int io_tlb_used_get(void *data, u64 *val)

{

	*val = mem_used(&io_tlb_default_mem);

	struct io_tlb_mem *mem = data;



	*val = mem_used(mem);

	return 0;

}

DEFINE_DEBUGFS_ATTRIBUTE(fops_io_tlb_used, io_tlb_used_get, NULL, "%llu\n");
@@ -943,7 +945,7 @@ static void swiotlb_create_debugfs_files(struct io_tlb_mem *mem, 
		return;



	debugfs_create_ulong("io_tlb_nslabs", 0400, mem->debugfs, &mem->nslabs);

	debugfs_create_file("io_tlb_used", 0400, mem->debugfs, NULL,

	debugfs_create_file("io_tlb_used", 0400, mem->debugfs, mem,

			&fops_io_tlb_used);

}