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| author | Thomas Gleixner <tglx@linutronix.de> | 2015-08-02 20:38:27 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-08-06 00:14:59 +0200 |
| commit | a782a7e46bb50822fabfeb7271605762a59c86df (patch) | |
| tree | a1b4d1798fc5b87f255716f07a170795cf5d5600 /arch/x86/include/asm/hw_irq.h | |
| parent | f61ae4fb66a4f7ae49e3456003fc4328d6db09c9 (diff) | |
| download | op-kernel-dev-a782a7e46bb50822fabfeb7271605762a59c86df.zip op-kernel-dev-a782a7e46bb50822fabfeb7271605762a59c86df.tar.gz | |
x86/irq: Store irq descriptor in vector array
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>
Diffstat (limited to 'arch/x86/include/asm/hw_irq.h')
| -rw-r--r-- | arch/x86/include/asm/hw_irq.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h index 62bb8d2..1e3408e 100644 --- a/arch/x86/include/asm/hw_irq.h +++ b/arch/x86/include/asm/hw_irq.h @@ -182,10 +182,10 @@ extern char irq_entries_start[]; #define trace_irq_entries_start irq_entries_start #endif -#define VECTOR_UNUSED (-1) -#define VECTOR_RETRIGGERED (-2) +#define VECTOR_UNUSED NULL +#define VECTOR_RETRIGGERED ((void *)~0UL) -typedef int vector_irq_t[NR_VECTORS]; +typedef struct irq_desc* vector_irq_t[NR_VECTORS]; DECLARE_PER_CPU(vector_irq_t, vector_irq); #endif /* !ASSEMBLY_ */ |
