This is a note to let you know that I've just added the patch titled
net/mlx5: Enhance debug print in page allocation failure
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-mlx5-enhance-debug-print-in-page-allocation-fail.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 07c9e03d77e9656954cb24abf226d5952db540db
Author: Jack Morgenstein <jackm@xxxxxxxxxx>
Date: Wed Jan 18 19:57:04 2023 +0200
net/mlx5: Enhance debug print in page allocation failure
[ Upstream commit 7eef93003e5d20e1a6a6e59e12d914b5431cbda2 ]
Provide more details to aid debugging.
Fixes: bf0bf77f6519 ("mlx5: Support communicating arbitrary host page size to firmware")
Signed-off-by: Eran Ben Elisha <eranbe@xxxxxxxxxx>
Signed-off-by: Majd Dibbiny <majd@xxxxxxxxxx>
Signed-off-by: Jack Morgenstein <jackm@xxxxxxxxxx>
Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
index db76c92b75e29..7f7693b709d72 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c
@@ -167,7 +167,8 @@ static int alloc_4k(struct mlx5_core_dev *dev, u64 *addr)
fp = list_entry(dev->priv.free_list.next, struct fw_page, list);
n = find_first_bit(&fp->bitmask, 8 * sizeof(fp->bitmask));
if (n >= MLX5_NUM_4K_IN_PAGE) {
- mlx5_core_warn(dev, "alloc 4k bug\n");
+ mlx5_core_warn(dev, "alloc 4k bug: fw page = 0x%llx, n = %u, bitmask: %lu, max num of 4K pages: %d\n",
+ fp->addr, n, fp->bitmask, MLX5_NUM_4K_IN_PAGE);
return -ENOENT;
}
clear_bit(n, &fp->bitmask);
