From 173a44dd1f406e9aa6fcf46c83b7c972d10ec930 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 6 Aug 2008 18:02:48 +0900 Subject: sh: smp: Provide a generic IPI handler. This provides a generic smp_message_recv() routine (based on the PPC one), that IPI IRQs can wrap in to. Signed-off-by: Paul Mundt --- arch/sh/kernel/smp.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'arch/sh/kernel/smp.c') diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c index 60c50841143e..ebfdd364544f 100644 --- a/arch/sh/kernel/smp.c +++ b/arch/sh/kernel/smp.c @@ -3,7 +3,7 @@ * * SMP support for the SuperH processors. * - * Copyright (C) 2002 - 2007 Paul Mundt + * Copyright (C) 2002 - 2008 Paul Mundt * Copyright (C) 2006 - 2007 Akio Idehara * * This file is subject to the terms and conditions of the GNU General Public @@ -184,6 +184,24 @@ void arch_send_call_function_single_ipi(int cpu) plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE); } +void smp_message_recv(unsigned int msg) +{ + switch (msg) { + case SMP_MSG_FUNCTION: + generic_smp_call_function_interrupt(); + break; + case SMP_MSG_RESCHEDULE: + break; + case SMP_MSG_FUNCTION_SINGLE: + generic_smp_call_function_single_interrupt(); + break; + default: + printk(KERN_WARNING "SMP %d: %s(): unknown IPI %d\n", + smp_processor_id(), __func__, msg); + break; + } +} + /* Not really SMP stuff ... */ int setup_profiling_timer(unsigned int multiplier) { -- cgit v1.2.2 From 6f52707e6882eb3bc6920c3f59beb05d23d68354 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 6 Aug 2008 18:21:03 +0900 Subject: sh: smp: Hook up a timer IPI stub. Signed-off-by: Paul Mundt --- arch/sh/kernel/smp.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'arch/sh/kernel/smp.c') diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c index ebfdd364544f..9cb3734dbd49 100644 --- a/arch/sh/kernel/smp.c +++ b/arch/sh/kernel/smp.c @@ -184,6 +184,21 @@ void arch_send_call_function_single_ipi(int cpu) plat_send_ipi(cpu, SMP_MSG_FUNCTION_SINGLE); } +void smp_timer_broadcast(cpumask_t mask) +{ + int cpu; + + for_each_cpu_mask(cpu, mask) + plat_send_ipi(cpu, SMP_MSG_TIMER); +} + +static void ipi_timer(void) +{ + irq_enter(); + /* XXX ... */ + irq_exit(); +} + void smp_message_recv(unsigned int msg) { switch (msg) { @@ -195,6 +210,9 @@ void smp_message_recv(unsigned int msg) case SMP_MSG_FUNCTION_SINGLE: generic_smp_call_function_single_interrupt(); break; + case SMP_MSG_TIMER: + ipi_timer(); + break; default: printk(KERN_WARNING "SMP %d: %s(): unknown IPI %d\n", smp_processor_id(), __func__, msg); -- cgit v1.2.2 From 8c24594deab89a484879bee270e948f0a556ed75 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Wed, 6 Aug 2008 18:37:07 +0900 Subject: sh: generic clockevent broadcast support. This hooks up GENERIC_CLOCKEVENTS_BROADCAST and a dummy local timer, which we call in to from the timer IPI when no other local timer is provided. Signed-off-by: Paul Mundt --- arch/sh/kernel/smp.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'arch/sh/kernel/smp.c') diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c index 9cb3734dbd49..c55d314166c7 100644 --- a/arch/sh/kernel/smp.c +++ b/arch/sh/kernel/smp.c @@ -84,9 +84,12 @@ asmlinkage void __cpuinit start_secondary(void) local_irq_enable(); + cpu = smp_processor_id(); + + /* Enable local timers */ + local_timer_setup(cpu); calibrate_delay(); - cpu = smp_processor_id(); smp_store_cpu_info(cpu); cpu_set(cpu, cpu_online_map); @@ -195,7 +198,7 @@ void smp_timer_broadcast(cpumask_t mask) static void ipi_timer(void) { irq_enter(); - /* XXX ... */ + local_timer_interrupt(); irq_exit(); } -- cgit v1.2.2