[PATCH v4 6/8] dma-buf: heaps: Export mem_accounting parameter

Maxime Ripard
2026-03-31T10:00:42Z

The mem_accounting kernel parameter is used by heaps to know if they
should account allocations in their respective cgroup controllers.

Since we're going to allow heaps to compile as modules, we need to
export that variable.

Reviewed-by: T.J. Mercier <tjmercier@google.com>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
drivers/dma-buf/dma-heap.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/dma-buf/dma-heap.c b/drivers/dma-buf/dma-heap.c
index ac5f8685a649496c0e1c6decbf263b63fa472d04..a76bf3f8b071a3d5bf39a8513f31e9e8aa16e02f 100644
--- a/drivers/dma-buf/dma-heap.c
+++ b/drivers/dma-buf/dma-heap.c
@@ -51,10 +51,11 @@ static DEFINE_XARRAY_ALLOC(dma_heap_minors);

bool __read_mostly mem_accounting;
module_param(mem_accounting, bool, 0444);
MODULE_PARM_DESC(mem_accounting,
"Enable cgroup-based memory accounting for dma-buf heap allocations (default=false).");
+EXPORT_SYMBOL_NS_GPL(mem_accounting, "DMA_BUF_HEAP");

static int dma_heap_buffer_alloc(struct dma_heap *heap, size_t len,
u32 fd_flags,
u64 heap_flags)
{

--
2.53.0