On Wed, Sep 27, 2023 at 10:45:46AM -0500, Don Brace wrote:
> Add in a description for module parameter disable_managed_interrupts.
>
> This module parameter allows users to disable automatic irq affinity
> setting by turning off the PCI_IRQ_AFFINITY flag when requesting
> interrupts.
>
> When the flag PCI_IRQ_AFFINITY is set, users cannot change the interrupt
> affinity through /proc/irq/<irq#>/*affinity*
>
> Some customers would like to change interrupt affinity based on their
> requirements.
>
> Reviewed-by: Scott Benesh <scott.benesh@xxxxxxxxxxxxx>
> Reviewed-by: Scott Teel <scott.teel@xxxxxxxxxxxxx>
> Reviewed-by: Mike McGowen <mike.mcgowen@xxxxxxxxxxxxx>
> Reviewed-by: Kevin Barnett <kevin.barnett@xxxxxxxxxxxxx>
> Signed-off-by: Don Brace <don.brace@xxxxxxxxxxxxx>
Patch applied, Don.
Thanks,
Alex
> ---
> man4/smartpqi.4 | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/man4/smartpqi.4 b/man4/smartpqi.4
> index 428d79a19840..613ef330aef1 100644
> --- a/man4/smartpqi.4
> +++ b/man4/smartpqi.4
> @@ -16,6 +16,7 @@ smartpqi \- Microchip Smart Storage SCSI driver
> .RB [ lockup_action= { none | reboot | panic }]
> .RB [ expose_ld_first= { 0 | 1 }]
> .RB [ hide_vsep= { 0 | 1 }]
> +.RB [ disable_managed_interrupts= { 0 | 1 }]
> .YS
> .SH DESCRIPTION
> .B smartpqi
> @@ -100,6 +101,12 @@ The default value is 0 (physical devices exposed first).
> .BR hide_vsep= { 0 | 1 }
> This option disables exposure of the virtual SEP to the OS.
> The default value is 0 (virtual SEP is exposed).
> +.TP
> +.BR disable_managed_interrupts= { 0 | 1 }
> +Disables driver utilization of Linux kernel managed interrupts for
> +controllers. The managed interrupts feature automatically distributes
> +interrupts to all available CPUs and assigns SMP affinity.
> +The default value is 0 (managed interrupts enabled).
> .SH FILES
> .SS Device nodes
> Logical drives are accessed via the SCSI disk driver
> --
> 2.42.0.158.g94e83dcf5b
>
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