From ad3b6993b9c5482e8a2ec5aed181538c921fdcbd Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 15 Nov 2010 09:42:08 +0000 Subject: ARM: SMP: pass an ipi number to smp_cross_call() This allows us to use smp_cross_call() to trigger a number of different software generated interrupts, rather than combining them all on one SGI. Recover the SGI number via do_IPI. Reviewed-by: Catalin Marinas Signed-off-by: Russell King diff --git a/arch/arm/include/asm/smp.h b/arch/arm/include/asm/smp.h index 3d05190..da7e7ca 100644 --- a/arch/arm/include/asm/smp.h +++ b/arch/arm/include/asm/smp.h @@ -38,7 +38,7 @@ extern void show_ipi_list(struct seq_file *p); /* * Called from assembly code, this handles an IPI. */ -asmlinkage void do_IPI(struct pt_regs *regs); +asmlinkage void do_IPI(int ipinr, struct pt_regs *regs); /* * Setup the set of possible CPUs (via set_cpu_possible) @@ -53,7 +53,7 @@ extern void smp_store_cpu_info(unsigned int cpuid); /* * Raise an IPI cross call on CPUs in callmap. */ -extern void smp_cross_call(const struct cpumask *mask); +extern void smp_cross_call(const struct cpumask *mask, int ipi); /* * Boot a secondary CPU, and assign it the specified idle task. diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S index c09e357..955cf5f 100644 --- a/arch/arm/kernel/entry-armv.S +++ b/arch/arm/kernel/entry-armv.S @@ -48,7 +48,7 @@ */ ALT_SMP(test_for_ipi r0, r6, r5, lr) ALT_UP_B(9997f) - movne r0, sp + movne r1, sp adrne lr, BSYM(1b) bne do_IPI diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 8c19595..7a236db 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -404,7 +404,7 @@ static void send_ipi_message(const struct cpumask *mask, enum ipi_msg_type msg) /* * Call the platform specific cross-CPU call function. */ - smp_cross_call(mask); + smp_cross_call(mask, 1); local_irq_restore(flags); } @@ -537,14 +537,8 @@ static void ipi_cpu_stop(unsigned int cpu) /* * Main handler for inter-processor interrupts - * - * For ARM, the ipimask now only identifies a single - * category of IPI (Bit 1 IPIs have been replaced by a - * different mechanism): - * - * Bit 0 - Inter-processor function call */ -asmlinkage void __exception do_IPI(struct pt_regs *regs) +asmlinkage void __exception do_IPI(int ipinr, struct pt_regs *regs) { unsigned int cpu = smp_processor_id(); struct ipi_data *ipi = &per_cpu(ipi_data, cpu); diff --git a/arch/arm/mach-msm/include/mach/smp.h b/arch/arm/mach-msm/include/mach/smp.h index 3ff7bf5..a95f7b9 100644 --- a/arch/arm/mach-msm/include/mach/smp.h +++ b/arch/arm/mach-msm/include/mach/smp.h @@ -31,9 +31,9 @@ #include -static inline void smp_cross_call(const struct cpumask *mask) +static inline void smp_cross_call(const struct cpumask *mask, int ipi) { - gic_raise_softirq(mask, 1); + gic_raise_softirq(mask, ipi); } #endif diff --git a/arch/arm/mach-omap2/omap-smp.c b/arch/arm/mach-omap2/omap-smp.c index 9e9f70e..56a8bce 100644 --- a/arch/arm/mach-omap2/omap-smp.c +++ b/arch/arm/mach-omap2/omap-smp.c @@ -76,7 +76,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) omap_modify_auxcoreboot0(0x200, 0xfffffdff); flush_cache_all(); smp_wmb(); - smp_cross_call(cpumask_of(cpu)); + smp_cross_call(cpumask_of(cpu), 1); /* * Now the secondary core is starting up let it run its diff --git a/arch/arm/mach-realview/include/mach/smp.h b/arch/arm/mach-realview/include/mach/smp.h index d3cd265..d1aa704 100644 --- a/arch/arm/mach-realview/include/mach/smp.h +++ b/arch/arm/mach-realview/include/mach/smp.h @@ -7,9 +7,9 @@ /* * We use IRQ1 as the IPI */ -static inline void smp_cross_call(const struct cpumask *mask) +static inline void smp_cross_call(const struct cpumask *mask, int ipi) { - gic_raise_softirq(mask, 1); + gic_raise_softirq(mask, ipi); } #endif diff --git a/arch/arm/mach-realview/platsmp.c b/arch/arm/mach-realview/platsmp.c index 0092658..af3d909 100644 --- a/arch/arm/mach-realview/platsmp.c +++ b/arch/arm/mach-realview/platsmp.c @@ -116,7 +116,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) * Use smp_cross_call() for this, since there's little * point duplicating the code here */ - smp_cross_call(cpumask_of(cpu)); + smp_cross_call(cpumask_of(cpu), 1); timeout = jiffies + (1 * HZ); while (time_before(jiffies, timeout)) { diff --git a/arch/arm/mach-s5pv310/include/mach/smp.h b/arch/arm/mach-s5pv310/include/mach/smp.h index b7ec252..2897747 100644 --- a/arch/arm/mach-s5pv310/include/mach/smp.h +++ b/arch/arm/mach-s5pv310/include/mach/smp.h @@ -14,9 +14,9 @@ extern void __iomem *gic_cpu_base_addr; /* * We use IRQ1 as the IPI */ -static inline void smp_cross_call(const struct cpumask *mask) +static inline void smp_cross_call(const struct cpumask *mask, int ipi) { - gic_raise_softirq(mask, 1); + gic_raise_softirq(mask, ipi); } #endif diff --git a/arch/arm/mach-s5pv310/platsmp.c b/arch/arm/mach-s5pv310/platsmp.c index d357c19..d474426 100644 --- a/arch/arm/mach-s5pv310/platsmp.c +++ b/arch/arm/mach-s5pv310/platsmp.c @@ -97,7 +97,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) * the boot monitor to read the system wide flags register, * and branch to the address found there. */ - smp_cross_call(cpumask_of(cpu)); + smp_cross_call(cpumask_of(cpu), 1); timeout = jiffies + (1 * HZ); while (time_before(jiffies, timeout)) { diff --git a/arch/arm/mach-tegra/include/mach/smp.h b/arch/arm/mach-tegra/include/mach/smp.h index d3cd265..d1aa704 100644 --- a/arch/arm/mach-tegra/include/mach/smp.h +++ b/arch/arm/mach-tegra/include/mach/smp.h @@ -7,9 +7,9 @@ /* * We use IRQ1 as the IPI */ -static inline void smp_cross_call(const struct cpumask *mask) +static inline void smp_cross_call(const struct cpumask *mask, int ipi) { - gic_raise_softirq(mask, 1); + gic_raise_softirq(mask, ipi); } #endif diff --git a/arch/arm/mach-ux500/include/mach/smp.h b/arch/arm/mach-ux500/include/mach/smp.h index 197e841..bd57c50 100644 --- a/arch/arm/mach-ux500/include/mach/smp.h +++ b/arch/arm/mach-ux500/include/mach/smp.h @@ -18,8 +18,8 @@ extern void u8500_secondary_startup(void); /* * We use IRQ1 as the IPI */ -static inline void smp_cross_call(const struct cpumask *mask) +static inline void smp_cross_call(const struct cpumask *mask, int ipi) { - gic_raise_softirq(mask, 1); + gic_raise_softirq(mask, ipi); } #endif diff --git a/arch/arm/mach-ux500/platsmp.c b/arch/arm/mach-ux500/platsmp.c index 9e4c678..b8987bd 100644 --- a/arch/arm/mach-ux500/platsmp.c +++ b/arch/arm/mach-ux500/platsmp.c @@ -78,7 +78,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) __cpuc_flush_dcache_area((void *)&pen_release, sizeof(pen_release)); outer_clean_range(__pa(&pen_release), __pa(&pen_release) + 1); - smp_cross_call(cpumask_of(cpu)); + smp_cross_call(cpumask_of(cpu), 1); timeout = jiffies + (1 * HZ); while (time_before(jiffies, timeout)) { diff --git a/arch/arm/mach-vexpress/include/mach/smp.h b/arch/arm/mach-vexpress/include/mach/smp.h index 5a6da4f..721be0f 100644 --- a/arch/arm/mach-vexpress/include/mach/smp.h +++ b/arch/arm/mach-vexpress/include/mach/smp.h @@ -7,8 +7,8 @@ /* * We use IRQ1 as the IPI */ -static inline void smp_cross_call(const struct cpumask *mask) +static inline void smp_cross_call(const struct cpumask *mask, int ipi) { - gic_raise_softirq(mask, 1); + gic_raise_softirq(mask, ipi); } #endif diff --git a/arch/arm/mach-vexpress/platsmp.c b/arch/arm/mach-vexpress/platsmp.c index 6709706..276f916 100644 --- a/arch/arm/mach-vexpress/platsmp.c +++ b/arch/arm/mach-vexpress/platsmp.c @@ -92,7 +92,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) * the boot monitor to read the system wide flags register, * and branch to the address found there. */ - smp_cross_call(cpumask_of(cpu)); + smp_cross_call(cpumask_of(cpu), 1); timeout = jiffies + (1 * HZ); while (time_before(jiffies, timeout)) { diff --git a/arch/arm/plat-omap/include/plat/smp.h b/arch/arm/plat-omap/include/plat/smp.h index ecd6a48..e5541e5 100644 --- a/arch/arm/plat-omap/include/plat/smp.h +++ b/arch/arm/plat-omap/include/plat/smp.h @@ -29,9 +29,9 @@ extern u32 omap_read_auxcoreboot0(void); /* * We use Soft IRQ1 as the IPI */ -static inline void smp_cross_call(const struct cpumask *mask) +static inline void smp_cross_call(const struct cpumask *mask, int ipi) { - gic_raise_softirq(mask, 1); + gic_raise_softirq(mask, ipi); } #endif -- cgit v0.10.2