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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-06-09 16:19:49 +0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-06-21 23:05:42 +0200 |
| commit | 4b92b4f754939e4ac6bb53355abbe48a5054b573 (patch) | |
| tree | f35eee474569ade2b013e947a140c84425c9e57d /arch/x86/kernel/apic | |
| parent | 95d76acc7518d566df18d67c1343bb375b78d1f3 (diff) | |
| download | op-kernel-dev-4b92b4f754939e4ac6bb53355abbe48a5054b573.zip op-kernel-dev-4b92b4f754939e4ac6bb53355abbe48a5054b573.tar.gz | |
x86, irq: Simplify arch_early_irq_init()
Simplify function arch_early_irq_init() and kill static array irq_cfgx[].
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1402302011-23642-21-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/apic')
| -rw-r--r-- | arch/x86/kernel/apic/io_apic.c | 33 |
1 files changed, 11 insertions, 22 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 4208ea9..e25e7e3 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -183,6 +183,7 @@ early_param("noapic", parse_noapic); static int io_apic_setup_irq_pin(unsigned int irq, int node, struct io_apic_irq_attr *attr); +static struct irq_cfg *alloc_irq_and_cfg_at(unsigned int at, int node); /* Will be called in mpparse/acpi/sfi codes for saving IRQ info */ void mp_save_irq(struct mpc_intsrc *m) @@ -214,14 +215,10 @@ static struct irq_pin_list *alloc_irq_pin_list(int node) return kzalloc_node(sizeof(struct irq_pin_list), GFP_KERNEL, node); } - -/* irq_cfg is indexed by the sum of all RTEs in all I/O APICs. */ -static struct irq_cfg irq_cfgx[NR_IRQS_LEGACY]; - int __init arch_early_irq_init(void) { struct irq_cfg *cfg; - int count, node, i; + int i, node = cpu_to_node(0); if (!nr_legacy_irqs()) io_apic_irqs = ~0UL; @@ -234,22 +231,14 @@ int __init arch_early_irq_init(void) pr_err("IOAPIC %d: suspend/resume impossible!\n", i); } - cfg = irq_cfgx; - count = ARRAY_SIZE(irq_cfgx); - node = cpu_to_node(0); - - for (i = 0; i < count; i++) { - irq_set_chip_data(i, &cfg[i]); - zalloc_cpumask_var_node(&cfg[i].domain, GFP_KERNEL, node); - zalloc_cpumask_var_node(&cfg[i].old_domain, GFP_KERNEL, node); - /* - * For legacy IRQ's, start with assigning irq0 to irq15 to - * IRQ0_VECTOR to IRQ15_VECTOR for all cpu's. - */ - if (i < nr_legacy_irqs()) { - cfg[i].vector = IRQ0_VECTOR + i; - cpumask_setall(cfg[i].domain); - } + /* + * For legacy IRQ's, start with assigning irq0 to irq15 to + * IRQ0_VECTOR to IRQ15_VECTOR for all cpu's. + */ + for (i = 0; i < nr_legacy_irqs(); i++) { + cfg = alloc_irq_and_cfg_at(i, node); + cfg->vector = IRQ0_VECTOR + i; + cpumask_setall(cfg->domain); } return 0; @@ -3377,7 +3366,7 @@ int __init arch_probe_nr_irqs(void) if (nr < nr_irqs) nr_irqs = nr; - return nr_legacy_irqs(); + return 0; } int io_apic_set_pci_routing(struct device *dev, int irq, |
