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MIPS: Provide a symbol for the legacy performance counter interrupt.

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Based on https://patchwork.linux-mips.org/patch/3576 - but this really
deserves its own patchset and the symbol should also be used :)

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2012-07-06 23:56:00 +02:00
parent b876c1a0bc
commit c6a4ebb9ae
2 changed files with 2 additions and 1 deletions
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1
arch/mips/include/asm/irq.h
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@ -136,6 +136,7 @@ extern void free_irqno(unsigned int irq);
* IE7. Since R2 their number has to be read from the c0_intctl register.
*/
#define CP0_LEGACY_COMPARE_IRQ 7
#define CP0_LEGACY_PERFCNT_IRQ 7
extern int cp0_compare_irq;
extern int cp0_compare_irq_shift;

2
arch/mips/kernel/traps.c
View File

@ -1597,7 +1597,7 @@ void __cpuinit per_cpu_trap_init(bool is_boot_cpu)
cp0_perfcount_irq = -1;
} else {
cp0_compare_irq = CP0_LEGACY_COMPARE_IRQ;
cp0_compare_irq_shift = cp0_compare_irq;
cp0_compare_irq_shift = CP0_LEGACY_PERFCNT_IRQ;
cp0_perfcount_irq = -1;
}