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ionic: Keep interrupt affinity up to date

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Currently the driver either sets the initial interrupt affinity for its
adminq and tx/rx queues on probe or resets it on various
down/up/reconfigure flows. If any user and/or user process
(i.e. irqbalance) changes IRQ affinity for any of the driver's interrupts
that will be reset to driver defaults whenever any down/up/reconfigure
operation happens. This is incorrect and is fixed by making 2 changes:

1. Allocate an array of cpumasks that's only allocated on probe and
   destroyed on remove.
2. Update the cpumask(s) for interrupts that are in use by registering
   for affinity notifiers.

Signed-off-by: Brett Creeley <brett.creeley@amd.com>
Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Link: https://lore.kernel.org/r/20240619003257.6138-3-shannon.nelson@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Brett Creeley
2024-06-18 17:32:51 -07:00
committed by Jakub Kicinski
parent 4aaa49a282
commit d458d4b4fd
3 changed files with 81 additions and 9 deletions
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drivers/net/ethernet/pensando/ionic/ionic_dev.h
+2 -2
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@@ -280,9 +280,9 @@ struct ionic_intr_info {
u64 rearm_count;
unsigned int index;
unsigned int vector;
unsigned int cpu;
u32 dim_coal_hw;
cpumask_t affinity_mask;
cpumask_var_t *affinity_mask;
struct irq_affinity_notify aff_notify;
};
struct ionic_cq {