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authorThiemo Seufer <ths@networkno.de>2006-07-05 09:26:38 -0400
committerRalf Baechle <ralf@linux-mips.org>2006-07-13 16:26:05 -0400
commit6e61e85b0980f7b88cd5c4b822386ed00dd7e295 (patch)
tree8541546073f5ea9131f881196519f28fc047ecb8 /arch
parentfc5d2d279ff820172a698706d33e733d4578bd6c (diff)
[MIPS] Sibyte: Improve interrupt latency again for sb1250/bcm1480
this patch restores the behaviour of the old (assembly-written) interrupt handler, the handler is left as soon as a single interrupt cause is handled. Signed-off-by: Thiemo Seufer <ths@networkno.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/sibyte/bcm1480/irq.c7
-rw-r--r--arch/mips/sibyte/sb1250/irq.c10
2 files changed, 9 insertions, 8 deletions
diff --git a/arch/mips/sibyte/bcm1480/irq.c b/arch/mips/sibyte/bcm1480/irq.c
index 2c5afb4c2ef3..cab78fb5a9ac 100644
--- a/arch/mips/sibyte/bcm1480/irq.c
+++ b/arch/mips/sibyte/bcm1480/irq.c
@@ -502,22 +502,23 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
502#ifdef CONFIG_SIBYTE_BCM1480_PROF 502#ifdef CONFIG_SIBYTE_BCM1480_PROF
503 if (pending & CAUSEF_IP7) /* Cpu performance counter interrupt */ 503 if (pending & CAUSEF_IP7) /* Cpu performance counter interrupt */
504 sbprof_cpu_intr(exception_epc(regs)); 504 sbprof_cpu_intr(exception_epc(regs));
505 else
505#endif 506#endif
506 507
507 if (pending & CAUSEF_IP4) 508 if (pending & CAUSEF_IP4)
508 bcm1480_timer_interrupt(regs); 509 bcm1480_timer_interrupt(regs);
509 510
510#ifdef CONFIG_SMP 511#ifdef CONFIG_SMP
511 if (pending & CAUSEF_IP3) 512 else if (pending & CAUSEF_IP3)
512 bcm1480_mailbox_interrupt(regs); 513 bcm1480_mailbox_interrupt(regs);
513#endif 514#endif
514 515
515#ifdef CONFIG_KGDB 516#ifdef CONFIG_KGDB
516 if (pending & CAUSEF_IP6) 517 else if (pending & CAUSEF_IP6)
517 bcm1480_kgdb_interrupt(regs); /* KGDB (uart 1) */ 518 bcm1480_kgdb_interrupt(regs); /* KGDB (uart 1) */
518#endif 519#endif
519 520
520 if (pending & CAUSEF_IP2) { 521 else if (pending & CAUSEF_IP2) {
521 unsigned long long mask_h, mask_l; 522 unsigned long long mask_h, mask_l;
522 unsigned long base; 523 unsigned long base;
523 524
diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c
index 8d49cb52d192..1de71adec6c6 100644
--- a/arch/mips/sibyte/sb1250/irq.c
+++ b/arch/mips/sibyte/sb1250/irq.c
@@ -460,25 +460,25 @@ asmlinkage void plat_irq_dispatch(struct pt_regs *regs)
460 pending = read_c0_cause(); 460 pending = read_c0_cause();
461 461
462#ifdef CONFIG_SIBYTE_SB1250_PROF 462#ifdef CONFIG_SIBYTE_SB1250_PROF
463 if (pending & CAUSEF_IP7) { /* Cpu performance counter interrupt */ 463 if (pending & CAUSEF_IP7) /* Cpu performance counter interrupt */
464 sbprof_cpu_intr(exception_epc(regs)); 464 sbprof_cpu_intr(exception_epc(regs));
465 } 465 else
466#endif 466#endif
467 467
468 if (pending & CAUSEF_IP4) 468 if (pending & CAUSEF_IP4)
469 sb1250_timer_interrupt(regs); 469 sb1250_timer_interrupt(regs);
470 470
471#ifdef CONFIG_SMP 471#ifdef CONFIG_SMP
472 if (pending & CAUSEF_IP3) 472 else if (pending & CAUSEF_IP3)
473 sb1250_mailbox_interrupt(regs); 473 sb1250_mailbox_interrupt(regs);
474#endif 474#endif
475 475
476#ifdef CONFIG_KGDB 476#ifdef CONFIG_KGDB
477 if (pending & CAUSEF_IP6) /* KGDB (uart 1) */ 477 else if (pending & CAUSEF_IP6) /* KGDB (uart 1) */
478 sb1250_kgdb_interrupt(regs); 478 sb1250_kgdb_interrupt(regs);
479#endif 479#endif
480 480
481 if (pending & CAUSEF_IP2) { 481 else if (pending & CAUSEF_IP2) {
482 unsigned long long mask; 482 unsigned long long mask;
483 483
484 /* 484 /*