openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

net/mlx5: Free IRQs in shutdown path 

Some platforms require IRQs to be free'd in the shutdown path. Otherwise
they will fail to be reallocated after a kexec.

Fixes: 8812c24d28 ("net/mlx5: Add fast unload support in shutdown flow")
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Daniel Jurgens 2018-03-26 13:35:29 -05:00 committed by Saeed Mahameed
parent ca3943c4aa
commit 1ef903bf79
3 changed files with 38 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/net/ethernet/mellanox/mlx5/core/eq.c
View File

@ -34,6 +34,9 @@
#include <linux/module.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/cmd.h>
#ifdef CONFIG_RFS_ACCEL
#include <linux/cpu_rmap.h>
#endif
#include "mlx5_core.h"
#include "fpga/core.h"
#include "eswitch.h"
@ -923,3 +926,28 @@ int mlx5_core_eq_query(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
MLX5_SET(query_eq_in, in, eq_number, eq->eqn);
return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
}
/* This function should only be called after mlx5_cmd_force_teardown_hca */
void mlx5_core_eq_free_irqs(struct mlx5_core_dev *dev)
{
struct mlx5_eq_table *table = &dev->priv.eq_table;
struct mlx5_eq *eq;
#ifdef CONFIG_RFS_ACCEL
if (dev->rmap) {
free_irq_cpu_rmap(dev->rmap);
dev->rmap = NULL;
}
#endif
list_for_each_entry(eq, &table->comp_eqs_list, list)
free_irq(eq->irqn, eq);
free_irq(table->pages_eq.irqn, &table->pages_eq);
free_irq(table->async_eq.irqn, &table->async_eq);
free_irq(table->cmd_eq.irqn, &table->cmd_eq);
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
if (MLX5_CAP_GEN(dev, pg))
free_irq(table->pfault_eq.irqn, &table->pfault_eq);
#endif
pci_free_irq_vectors(dev->pdev);
}

8
drivers/net/ethernet/mellanox/mlx5/core/main.c
View File

@ -1587,6 +1587,14 @@ static int mlx5_try_fast_unload(struct mlx5_core_dev *dev)
mlx5_enter_error_state(dev, true);
/* Some platforms requiring freeing the IRQ's in the shutdown
* flow. If they aren't freed they can't be allocated after
* kexec. There is no need to cleanup the mlx5_core software
* contexts.
*/
mlx5_irq_clear_affinity_hints(dev);
mlx5_core_eq_free_irqs(dev);
return 0;
}

2
drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
View File

@ -128,6 +128,8 @@ int mlx5_core_eq_query(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
u32 *out, int outlen);
int mlx5_start_eqs(struct mlx5_core_dev *dev);
void mlx5_stop_eqs(struct mlx5_core_dev *dev);
/* This function should only be called after mlx5_cmd_force_teardown_hca */
void mlx5_core_eq_free_irqs(struct mlx5_core_dev *dev);
struct mlx5_eq *mlx5_eqn2eq(struct mlx5_core_dev *dev, int eqn);
u32 mlx5_eq_poll_irq_disabled(struct mlx5_eq *eq);
void mlx5_cq_tasklet_cb(unsigned long data);