Commit d3b42f14 authored by Björn Töpel's avatar Björn Töpel Committed by Daniel Borkmann
Browse files

xsk: convert atomic_t to refcount_t 



Introduce refcount_t, in favor of atomic_t.

Signed-off-by: default avatarBjörn Töpel <bjorn.topel@intel.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent a49049ea

net/xdp/xdp_umem.c

+3 −3
Original line number Diff line number Diff line
@@ -78,7 +78,7 @@ static void xdp_umem_release_deferred(struct work_struct *work) 


void xdp_get_umem(struct xdp_umem *umem)

{

	atomic_inc(&umem->users);

	refcount_inc(&umem->users);

}



void xdp_put_umem(struct xdp_umem *umem)
@@ -86,7 +86,7 @@ void xdp_put_umem(struct xdp_umem *umem) 
	if (!umem)

		return;



	if (atomic_dec_and_test(&umem->users)) {

	if (refcount_dec_and_test(&umem->users)) {

		INIT_WORK(&umem->work, xdp_umem_release_deferred);

		schedule_work(&umem->work);

	}
@@ -206,7 +206,7 @@ static int xdp_umem_reg(struct xdp_umem *umem, struct xdp_umem_reg *mr) 
	umem->frame_size_log2 = ilog2(frame_size);

	umem->nfpp_mask = nfpp - 1;

	umem->nfpplog2 = ilog2(nfpp);

	atomic_set(&umem->users, 1);

	refcount_set(&umem->users, 1);



	err = xdp_umem_account_pages(umem);

	if (err)

net/xdp/xdp_umem.h

+1 −1
Original line number Diff line number Diff line
@@ -27,7 +27,7 @@ struct xdp_umem { 
	struct pid *pid;

	unsigned long address;

	size_t size;

	atomic_t users;

	refcount_t users;

	struct work_struct work;

};