diff options
| author | Samuel Holland <samuel@sholland.org> | 2022-07-01 23:00:54 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-07-07 11:38:04 +0300 |
| commit | 073352e951f60946452da358d64841066c3142ff (patch) | |
| tree | 3cecbf9913ae1ccb5aa3593bd00f599a467b4a4b /arch/ia64 | |
| parent | 961343d7822624d0e329ab4167c7e1d02bb53112 (diff) | |
| download | linux-073352e951f60946452da358d64841066c3142ff.tar.xz | |
genirq: Add and use an irq_data_update_affinity helper
Some architectures and irqchip drivers modify the cpumask returned by
irq_data_get_affinity_mask, usually by copying in to it. This is
problematic for uniprocessor configurations, where the affinity mask
should be constant, as it is known at compile time.
Add and use a setter for the affinity mask, following the pattern of
irq_data_update_effective_affinity. This allows the getter function to
return a const cpumask pointer.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # Xen bits
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220701200056.46555-7-samuel@sholland.org
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/kernel/iosapic.c | 2 | ||||
| -rw-r--r-- | arch/ia64/kernel/irq.c | 4 | ||||
| -rw-r--r-- | arch/ia64/kernel/msi_ia64.c | 4 |
3 files changed, 5 insertions, 5 deletions
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c index 35adcf89035a..99300850abc1 100644 --- a/arch/ia64/kernel/iosapic.c +++ b/arch/ia64/kernel/iosapic.c @@ -834,7 +834,7 @@ iosapic_unregister_intr (unsigned int gsi) if (iosapic_intr_info[irq].count == 0) { #ifdef CONFIG_SMP /* Clear affinity */ - cpumask_setall(irq_get_affinity_mask(irq)); + irq_data_update_affinity(irq_get_irq_data(irq), cpu_all_mask); #endif /* Clear the interrupt information */ iosapic_intr_info[irq].dest = 0; diff --git a/arch/ia64/kernel/irq.c b/arch/ia64/kernel/irq.c index ecef17c7c35b..275b9ea58c64 100644 --- a/arch/ia64/kernel/irq.c +++ b/arch/ia64/kernel/irq.c @@ -57,8 +57,8 @@ static char irq_redir [NR_IRQS]; // = { [0 ... NR_IRQS-1] = 1 }; void set_irq_affinity_info (unsigned int irq, int hwid, int redir) { if (irq < NR_IRQS) { - cpumask_copy(irq_get_affinity_mask(irq), - cpumask_of(cpu_logical_id(hwid))); + irq_data_update_affinity(irq_get_irq_data(irq), + cpumask_of(cpu_logical_id(hwid))); irq_redir[irq] = (char) (redir & 0xff); } } diff --git a/arch/ia64/kernel/msi_ia64.c b/arch/ia64/kernel/msi_ia64.c index df5c28f252e3..025e5133c860 100644 --- a/arch/ia64/kernel/msi_ia64.c +++ b/arch/ia64/kernel/msi_ia64.c @@ -37,7 +37,7 @@ static int ia64_set_msi_irq_affinity(struct irq_data *idata, msg.data = data; pci_write_msi_msg(irq, &msg); - cpumask_copy(irq_data_get_affinity_mask(idata), cpumask_of(cpu)); + irq_data_update_affinity(idata, cpumask_of(cpu)); return 0; } @@ -132,7 +132,7 @@ static int dmar_msi_set_affinity(struct irq_data *data, msg.address_lo |= MSI_ADDR_DEST_ID_CPU(cpu_physical_id(cpu)); dmar_msi_write(irq, &msg); - cpumask_copy(irq_data_get_affinity_mask(data), mask); + irq_data_update_affinity(data, mask); return 0; } |