diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2005-12-09 12:29:38 +0000 |
|---|---|---|
| committer | <ralf@denk.linux-mips.net> | 2006-01-10 13:39:07 +0000 |
| commit | ba339c03e2e8ede8ccd37ed6c4e564e3b1545495 (patch) | |
| tree | 1a7bbfd15a9c46d5300d2d5a1890d748b81dbce2 /arch/mips/kernel/time.c | |
| parent | 0401572a9b9b2f368176b6e53f53004fd048a566 (diff) | |
| download | blackbird-op-linux-ba339c03e2e8ede8ccd37ed6c4e564e3b1545495.tar.gz blackbird-op-linux-ba339c03e2e8ede8ccd37ed6c4e564e3b1545495.zip | |
MIPS: Oprofile: Fixup the loose ends in the plumbing.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/time.c')
| -rw-r--r-- | arch/mips/kernel/time.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c index 07e125c027b2..7050b4ffffcd 100644 --- a/arch/mips/kernel/time.c +++ b/arch/mips/kernel/time.c @@ -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]++; + /* + * 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 */ - timer_interrupt(irq, NULL, regs); + if (!r2 || (read_c0_cause() & (1 << 30))) + timer_interrupt(irq, NULL, regs); +out: irq_exit(); } |
