x86/irq: Store irq descriptor in vector array

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We can spare the irq_desc lookup in the interrupt entry code if we
store the descriptor pointer in the vector array instead the interrupt
number.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Link: http://lkml.kernel.org/r/20150802203609.717724106@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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This commit is contained in:

Thomas Gleixner 2015-08-02 20:38:27 +00:00

parent f61ae4fb66

commit a782a7e46b

8 changed files with 58 additions and 66 deletions

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6

arch/x86/include/asm/hw_irq.h

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4

arch/x86/include/asm/irq.h

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51

arch/x86/kernel/apic/vector.c

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37

arch/x86/kernel/irq.c

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9

arch/x86/kernel/irq_32.c

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arch/x86/kernel/irq_64.c

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4

arch/x86/kernel/irqinit.c

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4

arch/x86/lguest/boot.c

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