lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

MIPS: Oprofile: Fixup the loose ends in the plumbing.

Browse Source 
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle
2005-12-09 12:29:38 +00:00
committed by
parent 0401572a9b
commit ba339c03e2
4 changed files with 50 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
arch/mips/kernel/time.c
View File

@@ -507,14 +507,38 @@ irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
return IRQ_HANDLED;
}
int null_perf_irq(struct pt_regs *regs)
{
return 0;
}
int (*perf_irq)(struct pt_regs *regs) = null_perf_irq;
EXPORT_SYMBOL(null_perf_irq);
EXPORT_SYMBOL(perf_irq);
asmlinkage void ll_timer_interrupt(int irq, struct pt_regs *regs)
{
int r2 = cpu_has_mips_r2;
irq_enter();
kstat_this_cpu.irqs[irq]++;
/* we keep interrupt disabled all the time */
timer_interrupt(irq, NULL, regs);
/*
* Suckage alert:
* Before R2 of the architecture there was no way to see if a
* performance counter interrupt was pending, so we have to run the
* performance counter interrupt handler anyway.
*/
if (!r2 || (read_c0_cause() & (1 << 26)))
if (perf_irq(regs))
goto out;
/* we keep interrupt disabled all the time */
if (!r2 || (read_c0_cause() & (1 << 30)))
timer_interrupt(irq, NULL, regs);
out:
irq_exit();
}