From: Saeed Mahameed <saeedm@mellanox.com>
Date: Tue, 10 Sep 2019 12:35:59 -0700
Subject: net/mlx5: FWTrace, Reduce stack usage
Patch-mainline: v5.4-rc1
Git-commit: fa355bb1b0373e7fe087cfc830b1b0b9b6130388
References: bsc#1103990 FATE#326006

Mark mlx5_tracer_print_trace as noinline as the function only uses 512
bytes on the stack to avoid the following build warning:

drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c:660:13: error: stack frame size of 1032 bytes in function 'mlx5_fw_tracer_handle_traces' [-Werror,-Wframe-larger-than=]

Fixes: 70dd6fdb8987 ("net/mlx5: FW tracer, parse traces and kernel tracing support")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/fw_tracer.c
@@ -521,9 +521,10 @@ static void mlx5_fw_tracer_clean_ready_l
 		list_del(&str_frmt->list);
 }
 
-static void mlx5_tracer_print_trace(struct tracer_string_format *str_frmt,
-				    struct mlx5_core_dev *dev,
-				    u64 trace_timestamp)
+static noinline
+void mlx5_tracer_print_trace(struct tracer_string_format *str_frmt,
+			     struct mlx5_core_dev *dev,
+			     u64 trace_timestamp)
 {
 	char	tmp[512];