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cpumask: make irq_set_affinity() take a const struct cpumask

Browse Source 
Impact: change existing irq_chip API

Not much point with gentle transition here: the struct irq_chip's
setaffinity method signature needs to change.

Fortunately, not widely used code, but hits a few architectures.

Note: In irq_select_affinity() I save a temporary in by mangling
irq_desc[irq].affinity directly.  Ingo, does this break anything?

(Folded in fix from KOSAKI Motohiro)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
Reviewed-by: Grant Grundler <grundler@parisc-linux.org>
Acked-by: Ingo Molnar <mingo@redhat.com>
Cc: ralf@linux-mips.org
Cc: grundler@parisc-linux.org
Cc: jeremy@xensource.com
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
This commit is contained in:
Rusty Russell 2008-12-13 21:20:26 +10:30
parent 29c0177e6a
commit 0de26520c7
42 changed files with 172 additions and 162 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/alpha/kernel/irq.c
View File

@ -55,7 +55,7 @@ int irq_select_affinity(unsigned int irq)
last_cpu = cpu;
irq_desc[irq].affinity = cpumask_of_cpu(cpu);
irq_desc[irq].chip->set_affinity(irq, cpumask_of_cpu(cpu));
irq_desc[irq].chip->set_affinity(irq, cpumask_of(cpu));
return 0;
}
#endif /* CONFIG_SMP */

8
arch/alpha/kernel/sys_dp264.c
View File

@ -177,19 +177,19 @@ cpu_set_irq_affinity(unsigned int irq, cpumask_t affinity)
}
static void
dp264_set_affinity(unsigned int irq, cpumask_t affinity)
dp264_set_affinity(unsigned int irq, const struct cpumask *affinity)
{
spin_lock(&dp264_irq_lock);
cpu_set_irq_affinity(irq, affinity);
cpu_set_irq_affinity(irq, *affinity);
tsunami_update_irq_hw(cached_irq_mask);
spin_unlock(&dp264_irq_lock);
}
static void
clipper_set_affinity(unsigned int irq, cpumask_t affinity)
clipper_set_affinity(unsigned int irq, const struct cpumask *affinity)
{
spin_lock(&dp264_irq_lock);
cpu_set_irq_affinity(irq - 16, affinity);
cpu_set_irq_affinity(irq - 16, *affinity);
tsunami_update_irq_hw(cached_irq_mask);
spin_unlock(&dp264_irq_lock);
}

4
arch/alpha/kernel/sys_titan.c
View File

@ -158,10 +158,10 @@ titan_cpu_set_irq_affinity(unsigned int irq, cpumask_t affinity)
}
static void
titan_set_irq_affinity(unsigned int irq, cpumask_t affinity)
titan_set_irq_affinity(unsigned int irq, const struct cpumask *affinity)
{
spin_lock(&titan_irq_lock);
titan_cpu_set_irq_affinity(irq - 16, affinity);
titan_cpu_set_irq_affinity(irq - 16, *affinity);
titan_update_irq_hw(titan_cached_irq_mask);
spin_unlock(&titan_irq_lock);
}

4
arch/arm/common/gic.c
View File

@ -109,11 +109,11 @@ static void gic_unmask_irq(unsigned int irq)
}
#ifdef CONFIG_SMP
static void gic_set_cpu(unsigned int irq, cpumask_t mask_val)
static void gic_set_cpu(unsigned int irq, const struct cpumask *mask_val)
{
void __iomem *reg = gic_dist_base(irq) + GIC_DIST_TARGET + (gic_irq(irq) & ~3);
unsigned int shift = (irq % 4) * 8;
unsigned int cpu = first_cpu(mask_val);
unsigned int cpu = cpumask_first(mask_val);
u32 val;
spin_lock(&irq_controller_lock);

2
arch/arm/kernel/irq.c
View File

@ -174,7 +174,7 @@ static void route_irq(struct irq_desc *desc, unsigned int irq, unsigned int cpu)
pr_debug("IRQ%u: moving from cpu%u to cpu%u\n", irq, desc->cpu, cpu);
spin_lock_irq(&desc->lock);
desc->chip->set_affinity(irq, cpumask_of_cpu(cpu));
desc->chip->set_affinity(irq, cpumask_of(cpu));
spin_unlock_irq(&desc->lock);
}

4
arch/arm/oprofile/op_model_mpcore.c
View File

@ -260,10 +260,10 @@ static void em_stop(void)
static void em_route_irq(int irq, unsigned int cpu)
{
struct irq_desc *desc = irq_desc + irq;
cpumask_t mask = cpumask_of_cpu(cpu);
const struct cpumask *mask = cpumask_of(cpu);
spin_lock_irq(&desc->lock);
desc->affinity = mask;
desc->affinity = *mask;
desc->chip->set_affinity(irq, mask);
spin_unlock_irq(&desc->lock);
}

4
arch/cris/arch-v32/kernel/irq.c
View File

@ -325,11 +325,11 @@ static void end_crisv32_irq(unsigned int irq)
{
}
void set_affinity_crisv32_irq(unsigned int irq, cpumask_t dest)
void set_affinity_crisv32_irq(unsigned int irq, const struct cpumask *dest)
{
unsigned long flags;
spin_lock_irqsave(&irq_lock, flags);
irq_allocations[irq - FIRST_IRQ].mask = dest;
irq_allocations[irq - FIRST_IRQ].mask = *dest;
spin_unlock_irqrestore(&irq_lock, flags);
}

2
arch/ia64/hp/sim/hpsim_irq.c
View File

@ -22,7 +22,7 @@ hpsim_irq_noop (unsigned int irq)
}
static void
hpsim_set_affinity_noop (unsigned int a, cpumask_t b)
hpsim_set_affinity_noop(unsigned int a, const struct cpumask *b)
{
}

12
arch/ia64/kernel/iosapic.c
View File

@ -330,25 +330,25 @@ unmask_irq (unsigned int irq)
static void
iosapic_set_affinity (unsigned int irq, cpumask_t mask)
iosapic_set_affinity(unsigned int irq, const struct cpumask *mask)
{
#ifdef CONFIG_SMP
u32 high32, low32;
int dest, rte_index;
int cpu, dest, rte_index;
int redir = (irq & IA64_IRQ_REDIRECTED) ? 1 : 0;
struct iosapic_rte_info *rte;
struct iosapic *iosapic;
irq &= (~IA64_IRQ_REDIRECTED);
cpus_and(mask, mask, cpu_online_map);
if (cpus_empty(mask))
cpu = cpumask_first_and(cpu_online_mask, mask);
if (cpu >= nr_cpu_ids)
return;
if (irq_prepare_move(irq, first_cpu(mask)))
if (irq_prepare_move(irq, cpu))
return;
dest = cpu_physical_id(first_cpu(mask));
dest = cpu_physical_id(cpu);
if (!iosapic_intr_info[irq].count)
return; /* not an IOSAPIC interrupt */

9
arch/ia64/kernel/irq.c
View File

@ -133,7 +133,6 @@ unsigned int vectors_in_migration[NR_IRQS];
*/
static void migrate_irqs(void)
{
cpumask_t mask;
irq_desc_t *desc;
int irq, new_cpu;
@ -152,15 +151,14 @@ static void migrate_irqs(void)
if (desc->status == IRQ_PER_CPU)
continue;
cpus_and(mask, irq_desc[irq].affinity, cpu_online_map);
if (any_online_cpu(mask) == NR_CPUS) {
if (cpumask_any_and(&irq_desc[irq].affinity, cpu_online_mask)
>= nr_cpu_ids) {
/*
* Save it for phase 2 processing
*/
vectors_in_migration[irq] = irq;
new_cpu = any_online_cpu(cpu_online_map);
mask = cpumask_of_cpu(new_cpu);
/*
* Al three are essential, currently WARN_ON.. maybe panic?
@ -168,7 +166,8 @@ static void migrate_irqs(void)
if (desc->chip && desc->chip->disable &&
desc->chip->enable && desc->chip->set_affinity) {
desc->chip->disable(irq);
desc->chip->set_affinity(irq, mask);
desc->chip->set_affinity(irq,
cpumask_of(new_cpu));
desc->chip->enable(irq);
} else {
WARN_ON((!(desc->chip) || !(desc->chip->disable) ||

12
arch/ia64/kernel/msi_ia64.c
View File

@ -49,11 +49,12 @@
static struct irq_chip ia64_msi_chip;
#ifdef CONFIG_SMP
static void ia64_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask)
static void ia64_set_msi_irq_affinity(unsigned int irq,
const cpumask_t *cpu_mask)
{
struct msi_msg msg;
u32 addr, data;
int cpu = first_cpu(cpu_mask);
int cpu = first_cpu(*cpu_mask);
if (!cpu_online(cpu))
return;
@ -166,12 +167,11 @@ void arch_teardown_msi_irq(unsigned int irq)
#ifdef CONFIG_DMAR
#ifdef CONFIG_SMP
static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask)
static void dmar_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
{
struct irq_cfg *cfg = irq_cfg + irq;
struct msi_msg msg;
int cpu = first_cpu(mask);
int cpu = cpumask_first(mask);
if (!cpu_online(cpu))
return;
@ -187,7 +187,7 @@ static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask)
msg.address_lo |= MSI_ADDR_DESTID_CPU(cpu_physical_id(cpu));
dmar_msi_write(irq, &msg);
irq_desc[irq].affinity = mask;
irq_desc[irq].affinity = *mask;
}
#endif /* CONFIG_SMP */

4
arch/ia64/kernel/smpboot.c
View File

@ -682,7 +682,7 @@ int migrate_platform_irqs(unsigned int cpu)
{
int new_cpei_cpu;
irq_desc_t *desc = NULL;
cpumask_t mask;
const struct cpumask *mask;
int retval = 0;
/*
@ -695,7 +695,7 @@ int migrate_platform_irqs(unsigned int cpu)
* Now re-target the CPEI to a different processor
*/
new_cpei_cpu = any_online_cpu(cpu_online_map);
mask = cpumask_of_cpu(new_cpei_cpu);
mask = cpumask_of(new_cpei_cpu);
set_cpei_target_cpu(new_cpei_cpu);
desc = irq_desc + ia64_cpe_irq;
/*

6
arch/ia64/sn/kernel/irq.c
View File

@ -227,14 +227,14 @@ finish_up:
return new_irq_info;
}
static void sn_set_affinity_irq(unsigned int irq, cpumask_t mask)
static void sn_set_affinity_irq(unsigned int irq, const struct cpumask *mask)
{
struct sn_irq_info *sn_irq_info, *sn_irq_info_safe;
nasid_t nasid;
int slice;
nasid = cpuid_to_nasid(first_cpu(mask));
slice = cpuid_to_slice(first_cpu(mask));
nasid = cpuid_to_nasid(cpumask_first(mask));
slice = cpuid_to_slice(cpumask_first(mask));
list_for_each_entry_safe(sn_irq_info, sn_irq_info_safe,
sn_irq_lh[irq], list)

7
arch/ia64/sn/kernel/msi_sn.c
View File

@ -151,7 +151,8 @@ int sn_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *entry)
}
#ifdef CONFIG_SMP
static void sn_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask)
static void sn_set_msi_irq_affinity(unsigned int irq,
const struct cpumask *cpu_mask)
{
struct msi_msg msg;
int slice;
@ -164,7 +165,7 @@ static void sn_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask)
struct sn_pcibus_provider *provider;
unsigned int cpu;
cpu = first_cpu(cpu_mask);
cpu = cpumask_first(cpu_mask);
sn_irq_info = sn_msi_info[irq].sn_irq_info;
if (sn_irq_info == NULL || sn_irq_info->irq_int_bit >= 0)
return;
@ -204,7 +205,7 @@ static void sn_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask)
msg.address_lo = (u32)(bus_addr & 0x00000000ffffffff);
write_msi_msg(irq, &msg);
irq_desc[irq].affinity = cpu_mask;
irq_desc[irq].affinity = *cpu_mask;
}
#endif /* CONFIG_SMP */

3
arch/mips/include/asm/irq.h
View File

@ -49,7 +49,8 @@ static inline void smtc_im_ack_irq(unsigned int irq)
#ifdef CONFIG_MIPS_MT_SMTC_IRQAFF
#include <linux/cpumask.h>
extern void plat_set_irq_affinity(unsigned int irq, cpumask_t affinity);
extern void plat_set_irq_affinity(unsigned int irq,
const struct cpumask *affinity);
extern void smtc_forward_irq(unsigned int irq);
/*

2
arch/mips/kernel/cevt-bcm1480.c
View File

@ -148,6 +148,6 @@ void __cpuinit sb1480_clockevent_init(void)
action->name = name;
action->dev_id = cd;
irq_set_affinity(irq, cpumask_of_cpu(cpu));
irq_set_affinity(irq, cpumask_of(cpu));
setup_irq(irq, action);
}

2
arch/mips/kernel/cevt-sb1250.c
View File

@ -147,6 +147,6 @@ void __cpuinit sb1250_clockevent_init(void)
action->name = name;
action->dev_id = cd;
irq_set_affinity(irq, cpumask_of_cpu(cpu));
irq_set_affinity(irq, cpumask_of(cpu));
setup_irq(irq, action);
}

6
arch/mips/kernel/irq-gic.c
View File

@ -155,7 +155,7 @@ static void gic_unmask_irq(unsigned int irq)
static DEFINE_SPINLOCK(gic_lock);
static void gic_set_affinity(unsigned int irq, cpumask_t cpumask)
static void gic_set_affinity(unsigned int irq, const struct cpumask *cpumask)
{
cpumask_t tmp = CPU_MASK_NONE;
unsigned long flags;
@ -164,7 +164,7 @@ static void gic_set_affinity(unsigned int irq, cpumask_t cpumask)
pr_debug(KERN_DEBUG "%s called\n", __func__);
irq -= _irqbase;
cpus_and(tmp, cpumask, cpu_online_map);
cpumask_and(&tmp, cpumask, cpu_online_mask);
if (cpus_empty(tmp))
return;
@ -187,7 +187,7 @@ static void gic_set_affinity(unsigned int irq, cpumask_t cpumask)
set_bit(irq, pcpu_masks[first_cpu(tmp)].pcpu_mask);
}
irq_desc[irq].affinity = cpumask;
irq_desc[irq].affinity = *cpumask;
spin_unlock_irqrestore(&gic_lock, flags);
}

6
arch/mips/mti-malta/malta-smtc.c
View File

@ -114,9 +114,9 @@ struct plat_smp_ops msmtc_smp_ops = {
*/
void plat_set_irq_affinity(unsigned int irq, cpumask_t affinity)
void plat_set_irq_affinity(unsigned int irq, const struct cpumask *affinity)
{
cpumask_t tmask = affinity;
cpumask_t tmask = *affinity;
int cpu = 0;
void smtc_set_irq_affinity(unsigned int irq, cpumask_t aff);
@ -139,7 +139,7 @@ void plat_set_irq_affinity(unsigned int irq, cpumask_t affinity)
* be made to forward to an offline "CPU".
*/
for_each_cpu_mask(cpu, affinity) {
for_each_cpu(cpu, affinity) {
if ((cpu_data[cpu].vpe_id != 0) || !cpu_online(cpu))
cpu_clear(cpu, tmask);
}

8
arch/mips/sibyte/bcm1480/irq.c
View File

@ -50,7 +50,7 @@ static void enable_bcm1480_irq(unsigned int irq);
static void disable_bcm1480_irq(unsigned int irq);
static void ack_bcm1480_irq(unsigned int irq);
#ifdef CONFIG_SMP
static void bcm1480_set_affinity(unsigned int irq, cpumask_t mask);
static void bcm1480_set_affinity(unsigned int irq, const struct cpumask *mask);
#endif
#ifdef CONFIG_PCI
@ -109,7 +109,7 @@ void bcm1480_unmask_irq(int cpu, int irq)
}
#ifdef CONFIG_SMP
static void bcm1480_set_affinity(unsigned int irq, cpumask_t mask)
static void bcm1480_set_affinity(unsigned int irq, const struct cpumask *mask)
{
int i = 0, old_cpu, cpu, int_on, k;
u64 cur_ints;
@ -117,11 +117,11 @@ static void bcm1480_set_affinity(unsigned int irq, cpumask_t mask)
unsigned long flags;
unsigned int irq_dirty;
if (cpus_weight(mask) != 1) {
if (cpumask_weight(mask) != 1) {
printk("attempted to set irq affinity for irq %d to multiple CPUs\n", irq);
return;
}
i = first_cpu(mask);
i = cpumask_first(mask);
/* Convert logical CPU to physical CPU */
cpu = cpu_logical_map(i);

8
arch/mips/sibyte/sb1250/irq.c
View File

@ -50,7 +50,7 @@ static void enable_sb1250_irq(unsigned int irq);
static void disable_sb1250_irq(unsigned int irq);
static void ack_sb1250_irq(unsigned int irq);
#ifdef CONFIG_SMP
static void sb1250_set_affinity(unsigned int irq, cpumask_t mask);
static void sb1250_set_affinity(unsigned int irq, const struct cpumask *mask);
#endif
#ifdef CONFIG_SIBYTE_HAS_LDT
@ -103,16 +103,16 @@ void sb1250_unmask_irq(int cpu, int irq)
}
#ifdef CONFIG_SMP
static void sb1250_set_affinity(unsigned int irq, cpumask_t mask)
static void sb1250_set_affinity(unsigned int irq, const struct cpumask *mask)
{
int i = 0, old_cpu, cpu, int_on;
u64 cur_ints;
struct irq_desc *desc = irq_desc + irq;
unsigned long flags;
i = first_cpu(mask);
i = cpumask_first(mask);
if (cpus_weight(mask) > 1) {
if (cpumask_weight(mask) > 1) {
printk("attempted to set irq affinity for irq %d to multiple CPUs\n", irq);
return;
}

6
arch/parisc/kernel/irq.c
View File

@ -131,12 +131,12 @@ int cpu_check_affinity(unsigned int irq, cpumask_t *dest)
return 0;
}
static void cpu_set_affinity_irq(unsigned int irq, cpumask_t dest)
static void cpu_set_affinity_irq(unsigned int irq, const struct cpumask *dest)
{
if (cpu_check_affinity(irq, &dest))
if (cpu_check_affinity(irq, dest))
return;
irq_desc[irq].affinity = dest;
irq_desc[irq].affinity = *dest;
}
#endif

2
arch/powerpc/kernel/irq.c
View File

@ -237,7 +237,7 @@ void fixup_irqs(cpumask_t map)
mask = map;
}
if (irq_desc[irq].chip->set_affinity)
irq_desc[irq].chip->set_affinity(irq, mask);
irq_desc[irq].chip->set_affinity(irq, &mask);
else if (irq_desc[irq].action && !(warned++))
printk("Cannot set affinity for irq %i\n", irq);
}

6
arch/powerpc/platforms/pseries/xics.c
View File

@ -332,7 +332,7 @@ static void xics_eoi_lpar(unsigned int virq)
lpar_xirr_info_set((0xff << 24) | irq);
}
static void xics_set_affinity(unsigned int virq, cpumask_t cpumask)
static void xics_set_affinity(unsigned int virq, const struct cpumask *cpumask)
{
unsigned int irq;
int status;
@ -358,7 +358,7 @@ static void xics_set_affinity(unsigned int virq, cpumask_t cpumask)
irq_server = get_irq_server(virq, 1);
if (irq_server == -1) {
char cpulist[128];
cpumask_scnprintf(cpulist, sizeof(cpulist), &cpumask);
cpumask_scnprintf(cpulist, sizeof(cpulist), cpumask);
printk(KERN_WARNING
"%s: No online cpus in the mask %s for irq %d\n",
__func__, cpulist, virq);
@ -845,7 +845,7 @@ void xics_migrate_irqs_away(void)
/* Reset affinity to all cpus */
irq_desc[virq].affinity = CPU_MASK_ALL;
desc->chip->set_affinity(virq, CPU_MASK_ALL);
desc->chip->set_affinity(virq, cpu_all_mask);
unlock:
spin_unlock_irqrestore(&desc->lock, flags);
}

4
arch/powerpc/sysdev/mpic.c
View File

@ -817,7 +817,7 @@ static void mpic_end_ipi(unsigned int irq)
#endif /* CONFIG_SMP */
void mpic_set_affinity(unsigned int irq, cpumask_t cpumask)
void mpic_set_affinity(unsigned int irq, const struct cpumask *cpumask)
{
struct mpic *mpic = mpic_from_irq(irq);
unsigned int src = mpic_irq_to_hw(irq);
@ -829,7 +829,7 @@ void mpic_set_affinity(unsigned int irq, cpumask_t cpumask)
} else {
cpumask_t tmp;
cpus_and(tmp, cpumask, cpu_online_map);
cpumask_and(&tmp, cpumask, cpu_online_mask);
mpic_irq_write(src, MPIC_INFO(IRQ_DESTINATION),
mpic_physmask(cpus_addr(tmp)[0]));

2
arch/powerpc/sysdev/mpic.h
View File

@ -36,6 +36,6 @@ static inline int mpic_pasemi_msi_init(struct mpic *mpic)
extern int mpic_set_irq_type(unsigned int virq, unsigned int flow_type);
extern void mpic_set_vector(unsigned int virq, unsigned int vector);
extern void mpic_set_affinity(unsigned int irq, cpumask_t cpumask);
extern void mpic_set_affinity(unsigned int irq, const struct cpumask *cpumask);
#endif /* _POWERPC_SYSDEV_MPIC_H */

11
arch/sparc64/kernel/irq.c
View File

@ -312,7 +312,8 @@ static void sun4u_irq_enable(unsigned int virt_irq)
}
}
static void sun4u_set_affinity(unsigned int virt_irq, cpumask_t mask)
static void sun4u_set_affinity(unsigned int virt_irq,
const struct cpumask *mask)
{
sun4u_irq_enable(virt_irq);
}
@ -362,7 +363,8 @@ static void sun4v_irq_enable(unsigned int virt_irq)
ino, err);
}
static void sun4v_set_affinity(unsigned int virt_irq, cpumask_t mask)
static void sun4v_set_affinity(unsigned int virt_irq,
const struct cpumask *mask)
{
unsigned int ino = virt_irq_table[virt_irq].dev_ino;
unsigned long cpuid = irq_choose_cpu(virt_irq);
@ -429,7 +431,8 @@ static void sun4v_virq_enable(unsigned int virt_irq)
dev_handle, dev_ino, err);
}
static void sun4v_virt_set_affinity(unsigned int virt_irq, cpumask_t mask)
static void sun4v_virt_set_affinity(unsigned int virt_irq,
const struct cpumask *mask)
{
unsigned long cpuid, dev_handle, dev_ino;
int err;
@ -788,7 +791,7 @@ void fixup_irqs(void)
!(irq_desc[irq].status & IRQ_PER_CPU)) {
if (irq_desc[irq].chip->set_affinity)
irq_desc[irq].chip->set_affinity(irq,
irq_desc[irq].affinity);
&irq_desc[irq].affinity);
}
spin_unlock_irqrestore(&irq_desc[irq].lock, flags);
}

2
arch/sparc64/kernel/of_device.c
View File

@ -780,7 +780,7 @@ out:
if (nid != -1) {
cpumask_t numa_mask = node_to_cpumask(nid);
irq_set_affinity(irq, numa_mask);
irq_set_affinity(irq, &numa_mask);
}
return irq;

2
arch/sparc64/kernel/pci_msi.c
View File

@ -288,7 +288,7 @@ static int bringup_one_msi_queue(struct pci_pbm_info *pbm,
if (nid != -1) {
cpumask_t numa_mask = node_to_cpumask(nid);
irq_set_affinity(irq, numa_mask);
irq_set_affinity(irq, &numa_mask);
}
err = request_irq(irq, sparc64_msiq_interrupt, 0,
"MSIQ",

4
arch/x86/kernel/hpet.c
View File

@ -301,7 +301,7 @@ static void hpet_set_mode(enum clock_event_mode mode,
struct hpet_dev *hdev = EVT_TO_HPET_DEV(evt);
hpet_setup_msi_irq(hdev->irq);
disable_irq(hdev->irq);
irq_set_affinity(hdev->irq, cpumask_of_cpu(hdev->cpu));
irq_set_affinity(hdev->irq, cpumask_of(hdev->cpu));
enable_irq(hdev->irq);
}
break;
@ -449,7 +449,7 @@ static int hpet_setup_irq(struct hpet_dev *dev)
return -1;
disable_irq(dev->irq);
irq_set_affinity(dev->irq, cpumask_of_cpu(dev->cpu));
irq_set_affinity(dev->irq, cpumask_of(dev->cpu));
enable_irq(dev->irq);
printk(KERN_DEBUG "hpet: %s irq %d for MSI\n",

81
arch/x86/kernel/io_apic.c
View File

@ -361,7 +361,8 @@ static void __target_IO_APIC_irq(unsigned int irq, unsigned int dest, u8 vector)
static int assign_irq_vector(int irq, cpumask_t mask);
static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t mask)
static void set_ioapic_affinity_irq(unsigned int irq,
const struct cpumask *mask)
{
struct irq_cfg *cfg;
unsigned long flags;
@ -369,15 +370,14 @@ static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t mask)
cpumask_t tmp;
struct irq_desc *desc;
cpus_and(tmp, mask, cpu_online_map);
if (cpus_empty(tmp))
if (!cpumask_intersects(mask, cpu_online_mask))
return;
cfg = irq_cfg(irq);
if (assign_irq_vector(irq, mask))
if (assign_irq_vector(irq, *mask))
return;
cpus_and(tmp, cfg->domain, mask);
cpumask_and(&tmp, &cfg->domain, mask);
dest = cpu_mask_to_apicid(tmp);
/*
* Only the high 8 bits are valid.
@ -387,7 +387,7 @@ static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t mask)
desc = irq_to_desc(irq);
spin_lock_irqsave(&ioapic_lock, flags);
__target_IO_APIC_irq(irq, dest, cfg->vector);
desc->affinity = mask;
cpumask_copy(&desc->affinity, mask);
spin_unlock_irqrestore(&ioapic_lock, flags);
}
#endif /* CONFIG_SMP */
@ -2189,7 +2189,7 @@ static void ir_irq_migration(struct work_struct *work)
continue;
}
desc->chip->set_affinity(irq, desc->pending_mask);
desc->chip->set_affinity(irq, &desc->pending_mask);
spin_unlock_irqrestore(&desc->lock, flags);
}
}
@ -2198,18 +2198,19 @@ static void ir_irq_migration(struct work_struct *work)
/*
* Migrates the IRQ destination in the process context.
*/
static void set_ir_ioapic_affinity_irq(unsigned int irq, cpumask_t mask)
static void set_ir_ioapic_affinity_irq(unsigned int irq,
const struct cpumask *mask)
{
struct irq_desc *desc = irq_to_desc(irq);
if (desc->status & IRQ_LEVEL) {
desc->status |= IRQ_MOVE_PENDING;
desc->pending_mask = mask;
cpumask_copy(&desc->pending_mask, mask);
migrate_irq_remapped_level(irq);
return;
}
migrate_ioapic_irq(irq, mask);
migrate_ioapic_irq(irq, *mask);
}
#endif
@ -3027,7 +3028,7 @@ static int msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_ms
}
#ifdef CONFIG_SMP
static void set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
static void set_msi_irq_affinity(unsigned int irq, const struct cpumask *mask)
{
struct irq_cfg *cfg;
struct msi_msg msg;
@ -3035,15 +3036,14 @@ static void set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
cpumask_t tmp;
struct irq_desc *desc;
cpus_and(tmp, mask, cpu_online_map);
if (cpus_empty(tmp))
if (!cpumask_intersects(mask, cpu_online_mask))
return;
if (assign_irq_vector(irq, mask))
if (assign_irq_vector(irq, *mask))
return;
cfg = irq_cfg(irq);
cpus_and(tmp, cfg->domain, mask);
cpumask_and(&tmp, &cfg->domain, mask);
dest = cpu_mask_to_apicid(tmp);
read_msi_msg(irq, &msg);
@ -3055,7 +3055,7 @@ static void set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
write_msi_msg(irq, &msg);
desc = irq_to_desc(irq);
desc->affinity = mask;
cpumask_copy(&desc->affinity, mask);
}
#ifdef CONFIG_INTR_REMAP
@ -3063,7 +3063,8 @@ static void set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
* Migrate the MSI irq to another cpumask. This migration is
* done in the process context using interrupt-remapping hardware.
*/
static void ir_set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
static void ir_set_msi_irq_affinity(unsigned int irq,
const struct cpumask *mask)
{
struct irq_cfg *cfg;
unsigned int dest;
@ -3071,18 +3072,17 @@ static void ir_set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
struct irte irte;
struct irq_desc *desc;
cpus_and(tmp, mask, cpu_online_map);
if (cpus_empty(tmp))
if (!cpumask_intersects(mask, cpu_online_mask))
return;
if (get_irte(irq, &irte))
return;
if (assign_irq_vector(irq, mask))
if (assign_irq_vector(irq, *mask))
return;
cfg = irq_cfg(irq);
cpus_and(tmp, cfg->domain, mask);
cpumask_and(&tmp, &cfg->domain, mask);
dest = cpu_mask_to_apicid(tmp);
irte.vector = cfg->vector;
@ -3106,7 +3106,7 @@ static void ir_set_msi_irq_affinity(unsigned int irq, cpumask_t mask)
}
desc = irq_to_desc(irq);
desc->affinity = mask;
cpumask_copy(&desc->affinity, mask);
}
#endif
#endif /* CONFIG_SMP */
@ -3308,7 +3308,7 @@ void arch_teardown_msi_irq(unsigned int irq)
#ifdef CONFIG_DMAR
#ifdef CONFIG_SMP
static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask)
static void dmar_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
{
struct irq_cfg *cfg;
struct msi_msg msg;
@ -3316,15 +3316,14 @@ static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask)
cpumask_t tmp;
struct irq_desc *desc;
cpus_and(tmp, mask, cpu_online_map);
if (cpus_empty(tmp))
if (!cpumask_intersects(mask, cpu_online_mask))
return;
if (assign_irq_vector(irq, mask))
if (assign_irq_vector(irq, *mask))
return;
cfg = irq_cfg(irq);
cpus_and(tmp, cfg->domain, mask);
cpumask_and(&tmp, &cfg->domain, mask);
dest = cpu_mask_to_apicid(tmp);
dmar_msi_read(irq, &msg);
@ -3336,7 +3335,7 @@ static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask)
dmar_msi_write(irq, &msg);
desc = irq_to_desc(irq);
desc->affinity = mask;
cpumask_copy(&desc->affinity, mask);
}
#endif /* CONFIG_SMP */
@ -3369,7 +3368,7 @@ int arch_setup_dmar_msi(unsigned int irq)
#ifdef CONFIG_HPET_TIMER
#ifdef CONFIG_SMP
static void hpet_msi_set_affinity(unsigned int irq, cpumask_t mask)
static void hpet_msi_set_affinity(unsigned int irq, const struct cpumask *mask)
{
struct irq_cfg *cfg;
struct irq_desc *desc;
@ -3377,15 +3376,14 @@ static void hpet_msi_set_affinity(unsigned int irq, cpumask_t mask)
unsigned int dest;
cpumask_t tmp;
cpus_and(tmp, mask, cpu_online_map);
if (cpus_empty(tmp))
if (!cpumask_intersects(mask, cpu_online_mask))
return;
if (assign_irq_vector(irq, mask))
if (assign_irq_vector(irq, *mask))
return;
cfg = irq_cfg(irq);
cpus_and(tmp, cfg->domain, mask);
cpumask_and(&tmp, &cfg->domain, mask);
dest = cpu_mask_to_apicid(tmp);
hpet_msi_read(irq, &msg);
@ -3397,7 +3395,7 @@ static void hpet_msi_set_affinity(unsigned int irq, cpumask_t mask)
hpet_msi_write(irq, &msg);
desc = irq_to_desc(irq);
desc->affinity = mask;
cpumask_copy(&desc->affinity, mask);
}
#endif /* CONFIG_SMP */
@ -3451,27 +3449,26 @@ static void target_ht_irq(unsigned int irq, unsigned int dest, u8 vector)
write_ht_irq_msg(irq, &msg);
}
static void set_ht_irq_affinity(unsigned int irq, cpumask_t mask)
static void set_ht_irq_affinity(unsigned int irq, const struct cpumask *mask)
{
struct irq_cfg *cfg;
unsigned int dest;
cpumask_t tmp;
struct irq_desc *desc;
cpus_and(tmp, mask, cpu_online_map);
if (cpus_empty(tmp))
if (!cpumask_intersects(mask, cpu_online_mask))
return;
if (assign_irq_vector(irq, mask))
if (assign_irq_vector(irq, *mask))
return;
cfg = irq_cfg(irq);
cpus_and(tmp, cfg->domain, mask);
cpumask_and(&tmp, &cfg->domain, mask);
dest = cpu_mask_to_apicid(tmp);
target_ht_irq(irq, dest, cfg->vector);
desc = irq_to_desc(irq);
desc->affinity = mask;
cpumask_copy(&desc->affinity, mask);
}
#endif
@ -3794,10 +3791,10 @@ void __init setup_ioapic_dest(void)
#ifdef CONFIG_INTR_REMAP
if (intr_remapping_enabled)
set_ir_ioapic_affinity_irq(irq, mask);
set_ir_ioapic_affinity_irq(irq, &mask);
else
#endif
set_ioapic_affinity_irq(irq, mask);
set_ioapic_affinity_irq(irq, &mask);
}
}

2
arch/x86/kernel/irq_32.c
View File

@ -251,7 +251,7 @@ void fixup_irqs(cpumask_t map)
mask = map;
}
if (desc->chip->set_affinity)
desc->chip->set_affinity(irq, mask);
desc->chip->set_affinity(irq, &mask);
else if (desc->action && !(warned++))
printk("Cannot set affinity for irq %i\n", irq);
}

2
arch/x86/kernel/irq_64.c
View File

@ -116,7 +116,7 @@ void fixup_irqs(cpumask_t map)
desc->chip->mask(irq);
if (desc->chip->set_affinity)
desc->chip->set_affinity(irq, mask);
desc->chip->set_affinity(irq, &mask);
else if (!(warned++))
set_affinity = 0;

7
drivers/parisc/iosapic.c
View File

@ -704,16 +704,17 @@ static unsigned int iosapic_startup_irq(unsigned int irq)
}
#ifdef CONFIG_SMP
static void iosapic_set_affinity_irq(unsigned int irq, cpumask_t dest)
static void iosapic_set_affinity_irq(unsigned int irq,
const struct cpumask *dest)
{
struct vector_info *vi = iosapic_get_vector(irq);
u32 d0, d1, dummy_d0;
unsigned long flags;
if (cpu_check_affinity(irq, &dest))
if (cpu_check_affinity(irq, dest))
return;
vi->txn_addr = txn_affinity_addr(irq, first_cpu(dest));
vi->txn_addr = txn_affinity_addr(irq, cpumask_first(dest));
spin_lock_irqsave(&iosapic_lock, flags);
/* d1 contains the destination CPU, so only want to set that

6
drivers/xen/events.c
View File

@ -579,7 +579,7 @@ void rebind_evtchn_irq(int evtchn, int irq)
spin_unlock(&irq_mapping_update_lock);
/* new event channels are always bound to cpu 0 */
irq_set_affinity(irq, cpumask_of_cpu(0));
irq_set_affinity(irq, cpumask_of(0));
/* Unmask the event channel. */
enable_irq(irq);
@ -608,9 +608,9 @@ static void rebind_irq_to_cpu(unsigned irq, unsigned tcpu)
}
static void set_affinity_irq(unsigned irq, cpumask_t dest)
static void set_affinity_irq(unsigned irq, const struct cpumask *dest)
{
unsigned tcpu = first_cpu(dest);
unsigned tcpu = cpumask_first(dest);
rebind_irq_to_cpu(irq, tcpu);
}

4
include/linux/interrupt.h
View File

@ -109,13 +109,13 @@ extern void enable_irq(unsigned int irq);
extern cpumask_t irq_default_affinity;
extern int irq_set_affinity(unsigned int irq, cpumask_t cpumask);
extern int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask);
extern int irq_can_set_affinity(unsigned int irq);
extern int irq_select_affinity(unsigned int irq);
#else /* CONFIG_SMP */
static inline int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
static inline int irq_set_affinity(unsigned int irq, const struct cpumask *m)
{
return -EINVAL;
}

3
include/linux/irq.h
View File

@ -113,7 +113,8 @@ struct irq_chip {
void (*eoi)(unsigned int irq);
void (*end)(unsigned int irq);
void (*set_affinity)(unsigned int irq, cpumask_t dest);
void (*set_affinity)(unsigned int irq,
const struct cpumask *dest);
int (*retrigger)(unsigned int irq);
int (*set_type)(unsigned int irq, unsigned int flow_type);
int (*set_wake)(unsigned int irq, unsigned int on);

2
kernel/irq/chip.c
View File

@ -45,7 +45,7 @@ void dynamic_irq_init(unsigned int irq)
desc->irq_count = 0;
desc->irqs_unhandled = 0;
#ifdef CONFIG_SMP
cpus_setall(desc->affinity);
cpumask_setall(&desc->affinity);
#endif
spin_unlock_irqrestore(&desc->lock, flags);
}

22
kernel/irq/manage.c
View File

@ -79,7 +79,7 @@ int irq_can_set_affinity(unsigned int irq)
* @cpumask: cpumask
*
*/
int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask)
{
struct irq_desc *desc = irq_to_desc(irq);
unsigned long flags;
@ -91,14 +91,14 @@ int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
#ifdef CONFIG_GENERIC_PENDING_IRQ
if (desc->status & IRQ_MOVE_PCNTXT || desc->status & IRQ_DISABLED) {
desc->affinity = cpumask;
cpumask_copy(&desc->affinity, cpumask);
desc->chip->set_affinity(irq, cpumask);
} else {
desc->status |= IRQ_MOVE_PENDING;
desc->pending_mask = cpumask;
cpumask_copy(&desc->pending_mask, cpumask);
}
#else
desc->affinity = cpumask;
cpumask_copy(&desc->affinity, cpumask);
desc->chip->set_affinity(irq, cpumask);
#endif
desc->status |= IRQ_AFFINITY_SET;
@ -112,26 +112,24 @@ int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
*/
int do_irq_select_affinity(unsigned int irq, struct irq_desc *desc)
{
cpumask_t mask;
if (!irq_can_set_affinity(irq))
return 0;
cpus_and(mask, cpu_online_map, irq_default_affinity);
/*
* Preserve an userspace affinity setup, but make sure that
* one of the targets is online.
*/
if (desc->status & (IRQ_AFFINITY_SET | IRQ_NO_BALANCING)) {
if (cpus_intersects(desc->affinity, cpu_online_map))
mask = desc->affinity;
if (cpumask_any_and(&desc->affinity, cpu_online_mask)
< nr_cpu_ids)
goto set_affinity;
else
desc->status &= ~IRQ_AFFINITY_SET;
}
desc->affinity = mask;
desc->chip->set_affinity(irq, mask);
cpumask_and(&desc->affinity, cpu_online_mask, &irq_default_affinity);
set_affinity:
desc->chip->set_affinity(irq, &desc->affinity);
return 0;
}

14
kernel/irq/migration.c
View File

@ -4,7 +4,6 @@
void move_masked_irq(int irq)
{
struct irq_desc *desc = irq_to_desc(irq);
cpumask_t tmp;
if (likely(!(desc->status & IRQ_MOVE_PENDING)))
return;
@ -19,7 +18,7 @@ void move_masked_irq(int irq)
desc->status &= ~IRQ_MOVE_PENDING;
if (unlikely(cpus_empty(desc->pending_mask)))
if (unlikely(cpumask_empty(&desc->pending_mask)))
return;
if (!desc->chip->set_affinity)
@ -27,8 +26,6 @@ void move_masked_irq(int irq)
assert_spin_locked(&desc->lock);
cpus_and(tmp, desc->pending_mask, cpu_online_map);
/*
* If there was a valid mask to work with, please
* do the disable, re-program, enable sequence.
@ -41,10 +38,13 @@ void move_masked_irq(int irq)
* For correct operation this depends on the caller
* masking the irqs.
*/
if (likely(!cpus_empty(tmp))) {
desc->chip->set_affinity(irq,tmp);
if (likely(cpumask_any_and(&desc->pending_mask, cpu_online_mask)
< nr_cpu_ids)) {
cpumask_and(&desc->affinity,
&desc->pending_mask, cpu_online_mask);
desc->chip->set_affinity(irq, &desc->affinity);
}
cpus_clear(desc->pending_mask);
cpumask_clear(&desc->pending_mask);
}
void move_native_irq(int irq)

31
kernel/irq/proc.c
View File

@ -40,33 +40,42 @@ static ssize_t irq_affinity_proc_write(struct file *file,
const char __user *buffer, size_t count, loff_t *pos)
{
unsigned int irq = (int)(long)PDE(file->f_path.dentry->d_inode)->data;
cpumask_t new_value;
cpumask_var_t new_value;
int err;
if (!irq_to_desc(irq)->chip->set_affinity || no_irq_affinity ||
irq_balancing_disabled(irq))
return -EIO;
err = cpumask_parse_user(buffer, count, &new_value);
if (err)
return err;
if (!alloc_cpumask_var(&new_value, GFP_KERNEL))
return -ENOMEM;
if (!is_affinity_mask_valid(new_value))
return -EINVAL;
err = cpumask_parse_user(buffer, count, new_value);
if (err)
goto free_cpumask;
if (!is_affinity_mask_valid(*new_value)) {
err = -EINVAL;
goto free_cpumask;
}
/*
* Do not allow disabling IRQs completely - it's a too easy
* way to make the system unusable accidentally :-) At least
* one online CPU still has to be targeted.
*/
if (!cpus_intersects(new_value, cpu_online_map))
if (!cpumask_intersects(new_value, cpu_online_mask)) {
/* Special case for empty set - allow the architecture
code to set default SMP affinity. */
return irq_select_affinity_usr(irq) ? -EINVAL : count;
err = irq_select_affinity_usr(irq) ? -EINVAL : count;
} else {
irq_set_affinity(irq, new_value);
err = count;
}
irq_set_affinity(irq, new_value);
return count;
free_cpumask:
free_cpumask_var(new_value);
return err;
}
static int irq_affinity_proc_open(struct inode *inode, struct file *file)

6
kernel/time/tick-common.c
View File

@ -136,7 +136,7 @@ void tick_setup_periodic(struct clock_event_device *dev, int broadcast)
*/
static void tick_setup_device(struct tick_device *td,
struct clock_event_device *newdev, int cpu,
const cpumask_t *cpumask)
const struct cpumask *cpumask)
{
ktime_t next_event;
void (*handler)(struct clock_event_device *) = NULL;
@ -171,8 +171,8 @@ static void tick_setup_device(struct tick_device *td,
* When the device is not per cpu, pin the interrupt to the
* current cpu:
*/
if (!cpus_equal(newdev->cpumask, *cpumask))
irq_set_affinity(newdev->irq, *cpumask);
if (!cpumask_equal(&newdev->cpumask, cpumask))
irq_set_affinity(newdev->irq, cpumask);
/*
* When global broadcasting is active, check if the current