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author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-06-09 08:19:39 (GMT) |
---|---|---|
committer | Thomas Gleixner <tglx@linutronix.de> | 2014-06-21 21:05:41 (GMT) |
commit | 3eb2be5f49fdeac5ea2880aec90008f0a8250029 (patch) | |
tree | 013c2008477f2b3fa82f3b581d8dc4a1c80085ca /arch/x86/kernel/apic | |
parent | 2e0ad0e2c13534f1a0e7f63661e666c281e09b66 (diff) | |
download | linux-3eb2be5f49fdeac5ea2880aec90008f0a8250029.tar.xz |
x86, irq, trivial: Minor improvements of IRQ related code
1) Kill unused MAX_HARDIRQS_PER_CPU.
2) Improve function prototype declararions.
3) Simple typo fix, change "gsit" to "gsi".
4) Use macro VECTOR_UNDEFINED instead of hard-coded -1.
5) Kill redundant comments.
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>
Cc: Jiri Kosina <trivial@kernel.org>
Link: http://lkml.kernel.org/r/1402302011-23642-11-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 | 21 |
1 files changed, 5 insertions, 16 deletions
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 81e08ef..f339042 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -1010,7 +1010,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin, break; if (!test_bit(lbus, mp_bus_not_pci) && - !mp_irqs[i].irqtype && + mp_irqs[i].irqtype == mp_INT && (bus == lbus) && (slot == ((mp_irqs[i].srcbusirq >> 2) & 0x1f))) { int irq = pin_2_irq(i, ioapic_idx, mp_irqs[i].dstirq); @@ -1359,7 +1359,7 @@ static void __init __io_apic_setup_irqs(unsigned int ioapic_idx) irq = pin_2_irq(idx, ioapic_idx, pin); - if ((ioapic_idx > 0) && (irq > 16)) + if ((ioapic_idx > 0) && (irq > NR_IRQS_LEGACY)) continue; /* @@ -1388,7 +1388,7 @@ static void __init setup_IO_APIC_irqs(void) } /* - * for the gsit that is not in first ioapic + * for the gsi that is not in first ioapic * but could not use acpi_register_gsi() * like some special sci in IBM x3330 */ @@ -2225,7 +2225,7 @@ asmlinkage __visible void smp_irq_move_cleanup_interrupt(void) apic->send_IPI_self(IRQ_MOVE_CLEANUP_VECTOR); goto unlock; } - __this_cpu_write(vector_irq[vector], -1); + __this_cpu_write(vector_irq[vector], VECTOR_UNDEFINED); unlock: raw_spin_unlock(&desc->lock); } @@ -2514,17 +2514,6 @@ static inline void init_IO_APIC_traps(void) struct irq_cfg *cfg; unsigned int irq; - /* - * NOTE! The local APIC isn't very good at handling - * multiple interrupts at the same interrupt level. - * As the interrupt level is determined by taking the - * vector number and shifting that right by 4, we - * want to spread these out a bit so that they don't - * all fall in the same interrupt level. - * - * Also, we've got to be careful not to trash gate - * 0x80, because int 0x80 is hm, kind of importantish. ;) - */ for_each_active_irq(irq) { cfg = irq_get_chip_data(irq); if (IO_APIC_IRQ(irq) && cfg && !cfg->vector) { @@ -3550,7 +3539,7 @@ void __init setup_ioapic_dest(void) continue; irq = pin_2_irq(irq_entry, ioapic, pin); - if ((ioapic > 0) && (irq > 16)) + if ((ioapic > 0) && (irq > NR_IRQS_LEGACY)) continue; idata = irq_get_irq_data(irq); |