Collecting crdump involves dumping vsc registers from pci config space of mlx device. The code can run for long time starving other threads want to run on the cpu. Added conditional reschedule between register reads and while waiting for register value to release the cpu more often. Reviewed-by: Yuanyuan Zhong <yzhong@xxxxxxxxxxxxxxx> Signed-off-by: Mohamed Khalfella <mkhalfella@xxxxxxxxxxxxxxx> --- drivers/net/ethernet/mellanox/mlx5/core/lib/pci_vsc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/pci_vsc.c b/drivers/net/ethernet/mellanox/mlx5/core/lib/pci_vsc.c index d0b595ba6110..377cc39643b4 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/pci_vsc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/pci_vsc.c @@ -191,6 +191,7 @@ static int mlx5_vsc_wait_on_flag(struct mlx5_core_dev *dev, u8 expected_val) if ((retries & 0xf) == 0) usleep_range(1000, 2000); + cond_resched(); } while (flag != expected_val); return 0; @@ -280,6 +281,7 @@ int mlx5_vsc_gw_read_block_fast(struct mlx5_core_dev *dev, u32 *data, return read_addr; read_addr = next_read_addr; + cond_resched(); } return length; } -- 2.45.2
