From: Niklas Schnelle schnelle@linux.ibm.com
[ Upstream commit a019b36123aec9700b21ae0724710f62928a8bc1 ]
On s390 FORCE_MAX_ZONEORDER is 9 instead of 11, thus a larger kzalloc() allocation as done for the firmware tracer will always fail.
Looking at mlx5_fw_tracer_save_trace(), it is actually the driver itself that copies the debug data into the trace array and there is no need for the allocation to be contiguous in physical memory. We can therefor use kvzalloc() instead of kzalloc() and get rid of the large contiguous allcoation.
Fixes: f53aaa31cce7 ("net/mlx5: FW tracer, implement tracer logic") Signed-off-by: Niklas Schnelle schnelle@linux.ibm.com Signed-off-by: Saeed Mahameed saeedm@mellanox.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c b/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c index d4ec93bde4ded..2266c09b741a2 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c @@ -796,7 +796,7 @@ struct mlx5_fw_tracer *mlx5_fw_tracer_create(struct mlx5_core_dev *dev) return NULL; }
- tracer = kzalloc(sizeof(*tracer), GFP_KERNEL); + tracer = kvzalloc(sizeof(*tracer), GFP_KERNEL); if (!tracer) return ERR_PTR(-ENOMEM);
@@ -842,7 +842,7 @@ destroy_workqueue: tracer->dev = NULL; destroy_workqueue(tracer->work_queue); free_tracer: - kfree(tracer); + kvfree(tracer); return ERR_PTR(err); }
@@ -919,7 +919,7 @@ void mlx5_fw_tracer_destroy(struct mlx5_fw_tracer *tracer) mlx5_fw_tracer_destroy_log_buf(tracer); flush_workqueue(tracer->work_queue); destroy_workqueue(tracer->work_queue); - kfree(tracer); + kvfree(tracer); }
void mlx5_fw_tracer_event(struct mlx5_core_dev *dev, struct mlx5_eqe *eqe)