[v6,11/14] ARM: gic: remove previous local timer interrupt handling
diff mbox

Message ID 1307110558-29710-12-git-send-email-marc.zyngier@arm.com
State New, archived
Headers show

Commit Message

Marc Zyngier June 3, 2011, 2:15 p.m. UTC
Now that all users of local timers are using CONFIG_ARM_GIC_VPPI,
the now unused local timer infrastructure can be safely removed.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
---
 arch/arm/common/gic.c                           |   10 --------
 arch/arm/include/asm/entry-macro-multi.S        |    7 -----
 arch/arm/include/asm/hardirq.h                  |    3 --
 arch/arm/include/asm/hardware/entry-macro-gic.S |   13 ----------
 arch/arm/include/asm/hardware/gic.h             |    1 -
 arch/arm/include/asm/localtimer.h               |    5 ----
 arch/arm/include/asm/smp.h                      |    5 ----
 arch/arm/kernel/irq.c                           |    3 --
 arch/arm/kernel/smp.c                           |   29 -----------------------
 arch/arm/kernel/smp_twd.c                       |    7 -----
 10 files changed, 0 insertions(+), 83 deletions(-)

Patch
diff mbox

diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c
index 2146d5e..2f36979 100644
--- a/arch/arm/common/gic.c
+++ b/arch/arm/common/gic.c
@@ -501,16 +501,6 @@  void __cpuinit gic_secondary_init(unsigned int gic_nr)
 	gic_cpu_init(&gic_data[gic_nr]);
 }
 
-void __cpuinit gic_enable_ppi(unsigned int irq)
-{
-	unsigned long flags;
-
-	local_irq_save(flags);
-	irq_set_status_flags(irq, IRQ_NOPROBE);
-	gic_unmask_irq(irq_get_irq_data(irq));
-	local_irq_restore(flags);
-}
-
 #ifdef CONFIG_SMP
 void gic_raise_softirq(const struct cpumask *mask, unsigned int irq)
 {
diff --git a/arch/arm/include/asm/entry-macro-multi.S b/arch/arm/include/asm/entry-macro-multi.S
index c599795..4ef27af 100644
--- a/arch/arm/include/asm/entry-macro-multi.S
+++ b/arch/arm/include/asm/entry-macro-multi.S
@@ -23,13 +23,6 @@ 
 	movne	r1, sp
 	adrne	lr, BSYM(1b)
 	bne	do_IPI
-
-#if defined(CONFIG_LOCAL_TIMERS) && !defined(CONFIG_ARM_GIC_VPPI)
-	test_for_ltirq r0, r6, r5, lr
-	movne	r0, sp
-	adrne	lr, BSYM(1b)
-	bne	do_local_timer
-#endif
 #endif
 9997:
 	.endm
diff --git a/arch/arm/include/asm/hardirq.h b/arch/arm/include/asm/hardirq.h
index 89ad180..ddf07a9 100644
--- a/arch/arm/include/asm/hardirq.h
+++ b/arch/arm/include/asm/hardirq.h
@@ -9,9 +9,6 @@ 
 
 typedef struct {
 	unsigned int __softirq_pending;
-#ifdef CONFIG_LOCAL_TIMERS
-	unsigned int local_timer_irqs;
-#endif
 #ifdef CONFIG_SMP
 	unsigned int ipi_irqs[NR_IPI];
 #endif
diff --git a/arch/arm/include/asm/hardware/entry-macro-gic.S b/arch/arm/include/asm/hardware/entry-macro-gic.S
index 14a3363..db83287 100644
--- a/arch/arm/include/asm/hardware/entry-macro-gic.S
+++ b/arch/arm/include/asm/hardware/entry-macro-gic.S
@@ -65,16 +65,3 @@ 
 	strcc	\irqstat, [\base, #GIC_CPU_EOI]
 	cmpcs	\irqnr, \irqnr
 	.endm
-
-#ifndef CONFIG_ARM_GIC_VPPI
-/* As above, this assumes that irqstat and base are preserved.. */
-
-	.macro test_for_ltirq, irqnr, irqstat, base, tmp
-	bic	\irqnr, \irqstat, #0x1c00
-	mov 	\tmp, #0
-	cmp	\irqnr, #29
-	moveq	\tmp, #1
-	streq	\irqstat, [\base, #GIC_CPU_EOI]
-	cmp	\tmp, #0
-	.endm
-#endif
diff --git a/arch/arm/include/asm/hardware/gic.h b/arch/arm/include/asm/hardware/gic.h
index 9dbffed..069d4c0 100644
--- a/arch/arm/include/asm/hardware/gic.h
+++ b/arch/arm/include/asm/hardware/gic.h
@@ -42,7 +42,6 @@  void gic_init(unsigned int, unsigned int, void __iomem *, void __iomem *);
 void gic_secondary_init(unsigned int);
 void gic_cascade_irq(unsigned int gic_nr, unsigned int irq);
 void gic_raise_softirq(const struct cpumask *mask, unsigned int irq);
-void gic_enable_ppi(unsigned int);
 #ifdef CONFIG_ARM_GIC_VPPI
 unsigned int gic_ppi_to_vppi(unsigned int irq);
 #else
diff --git a/arch/arm/include/asm/localtimer.h b/arch/arm/include/asm/localtimer.h
index bef44b3..5c8acb4 100644
--- a/arch/arm/include/asm/localtimer.h
+++ b/arch/arm/include/asm/localtimer.h
@@ -20,11 +20,6 @@  struct clock_event_device;
 void percpu_timer_setup(void);
 
 /*
- * Called from assembly, this is the local timer IRQ handler
- */
-asmlinkage void do_local_timer(struct pt_regs *);
-
-/*
  * Per-cpu timer IRQ handler
  */
 irqreturn_t percpu_timer_handler(int irq, void *dev_id);
diff --git a/arch/arm/include/asm/smp.h b/arch/arm/include/asm/smp.h
index e42d96a..73ec155 100644
--- a/arch/arm/include/asm/smp.h
+++ b/arch/arm/include/asm/smp.h
@@ -88,9 +88,4 @@  extern void platform_cpu_enable(unsigned int cpu);
 extern void arch_send_call_function_single_ipi(int cpu);
 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
 
-/*
- * show local interrupt info
- */
-extern void show_local_irqs(struct seq_file *, int);
-
 #endif /* ifndef __ASM_ARM_SMP_H */
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 237959f..9f3e427 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -59,9 +59,6 @@  int arch_show_interrupts(struct seq_file *p, int prec)
 #ifdef CONFIG_SMP
 	show_ipi_list(p, prec);
 #endif
-#ifdef CONFIG_LOCAL_TIMERS
-	show_local_irqs(p, prec);
-#endif
 	seq_printf(p, "%*s: %10lu\n", prec, "Err", irq_err_count);
 	return 0;
 }
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index daa7088..35135b0 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -426,10 +426,6 @@  u64 smp_irq_stat_cpu(unsigned int cpu)
 	for (i = 0; i < NR_IPI; i++)
 		sum += __get_irq_stat(cpu, ipi_irqs[i]);
 
-#ifdef CONFIG_LOCAL_TIMERS
-	sum += __get_irq_stat(cpu, local_timer_irqs);
-#endif
-
 	return sum;
 }
 
@@ -447,19 +443,6 @@  static void ipi_timer(void)
 }
 
 #ifdef CONFIG_LOCAL_TIMERS
-asmlinkage void __exception_irq_entry do_local_timer(struct pt_regs *regs)
-{
-	struct pt_regs *old_regs = set_irq_regs(regs);
-	int cpu = smp_processor_id();
-
-	if (local_timer_ack()) {
-		__inc_irq_stat(cpu, local_timer_irqs);
-		ipi_timer();
-	}
-
-	set_irq_regs(old_regs);
-}
-
 irqreturn_t percpu_timer_handler(int irq, void *dev_id)
 {
 	struct clock_event_device *evt = dev_id;
@@ -471,18 +454,6 @@  irqreturn_t percpu_timer_handler(int irq, void *dev_id)
 
 	return IRQ_NONE;
 }
-
-void show_local_irqs(struct seq_file *p, int prec)
-{
-	unsigned int cpu;
-
-	seq_printf(p, "%*s: ", prec, "LOC");
-
-	for_each_present_cpu(cpu)
-		seq_printf(p, "%10u ", __get_irq_stat(cpu, local_timer_irqs));
-
-	seq_printf(p, " Local timer interrupts\n");
-}
 #endif
 
 #ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index 773336e..aa99656 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -45,10 +45,8 @@  static void twd_set_mode(enum clock_event_mode mode,
 		ctrl = TWD_TIMER_CONTROL_IT_ENABLE | TWD_TIMER_CONTROL_ONESHOT;
 		break;
 	case CLOCK_EVT_MODE_UNUSED:
-#ifdef CONFIG_ARM_GIC_VPPI
 		disable_irq(clk->irq);
 		/* fall through */
-#endif
 	case CLOCK_EVT_MODE_SHUTDOWN:
 	default:
 		ctrl = 0;
@@ -146,7 +144,6 @@  void __cpuinit twd_timer_setup(struct clock_event_device *clk)
 	clk->max_delta_ns = clockevent_delta2ns(0xffffffff, clk);
 	clk->min_delta_ns = clockevent_delta2ns(0xf, clk);
 
-#ifdef CONFIG_ARM_GIC_VPPI
 	reqd = &__get_cpu_var(irq_reqd);
 	if (!*reqd) {
 		err = request_irq(clk->irq, percpu_timer_handler,
@@ -161,10 +158,6 @@  void __cpuinit twd_timer_setup(struct clock_event_device *clk)
 		*reqd = true;
 	} else
 		enable_irq(clk->irq);
-#else
-	/* Make sure our local interrupt controller has this enabled */
-	gic_enable_ppi(clk->irq);
-#endif
 
 	clockevents_register_device(clk);
 }