From: Ravikiran G Thirumalai Date: Wed, 11 Jan 2006 21:45:39 +0000 (+0100) Subject: [PATCH] x86_64: Node local pda take 2 -- cpu_pda preparation X-Git-Tag: v2.6.16-rc1~315 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=df79efde82952edc653fa6eb1338a82b87aa0585;p=platform%2Fkernel%2Flinux-3.10.git [PATCH] x86_64: Node local pda take 2 -- cpu_pda preparation Helper patch to change cpu_pda users to use macros to access cpu_pda instead of the cpu_pda[] array. Signed-off-by: Ravikiran Thirumalai Signed-off-by: Shai Fultheim Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- diff --git a/arch/x86_64/kernel/irq.c b/arch/x86_64/kernel/irq.c index 8bf57f7..30d2a1e 100644 --- a/arch/x86_64/kernel/irq.c +++ b/arch/x86_64/kernel/irq.c @@ -70,13 +70,13 @@ skip: seq_printf(p, "NMI: "); for (j = 0; j < NR_CPUS; j++) if (cpu_online(j)) - seq_printf(p, "%10u ", cpu_pda[j].__nmi_count); + seq_printf(p, "%10u ", cpu_pda(j)->__nmi_count); seq_putc(p, '\n'); #ifdef CONFIG_X86_LOCAL_APIC seq_printf(p, "LOC: "); for (j = 0; j < NR_CPUS; j++) if (cpu_online(j)) - seq_printf(p, "%10u ", cpu_pda[j].apic_timer_irqs); + seq_printf(p, "%10u ", cpu_pda(j)->apic_timer_irqs); seq_putc(p, '\n'); #endif seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count)); diff --git a/arch/x86_64/kernel/nmi.c b/arch/x86_64/kernel/nmi.c index 39d445e..40575d8 100644 --- a/arch/x86_64/kernel/nmi.c +++ b/arch/x86_64/kernel/nmi.c @@ -155,19 +155,19 @@ int __init check_nmi_watchdog (void) smp_call_function(nmi_cpu_busy, (void *)&endflag, 0, 0); for (cpu = 0; cpu < NR_CPUS; cpu++) - counts[cpu] = cpu_pda[cpu].__nmi_count; + counts[cpu] = cpu_pda(cpu)->__nmi_count; local_irq_enable(); mdelay((10*1000)/nmi_hz); // wait 10 ticks for (cpu = 0; cpu < NR_CPUS; cpu++) { if (!cpu_online(cpu)) continue; - if (cpu_pda[cpu].__nmi_count - counts[cpu] <= 5) { + if (cpu_pda(cpu)->__nmi_count - counts[cpu] <= 5) { endflag = 1; printk("CPU#%d: NMI appears to be stuck (%d->%d)!\n", cpu, counts[cpu], - cpu_pda[cpu].__nmi_count); + cpu_pda(cpu)->__nmi_count); nmi_active = 0; lapic_nmi_owner &= ~LAPIC_NMI_WATCHDOG; nmi_perfctr_msr = 0; diff --git a/arch/x86_64/kernel/setup64.c b/arch/x86_64/kernel/setup64.c index 972f5d4..66325a7 100644 --- a/arch/x86_64/kernel/setup64.c +++ b/arch/x86_64/kernel/setup64.c @@ -30,7 +30,7 @@ char x86_boot_params[BOOT_PARAM_SIZE] __initdata = {0,}; cpumask_t cpu_initialized __cpuinitdata = CPU_MASK_NONE; -struct x8664_pda cpu_pda[NR_CPUS] __cacheline_aligned; +struct x8664_pda _cpu_pda[NR_CPUS] __cacheline_aligned; struct desc_ptr idt_descr = { 256 * 16, (unsigned long) idt_table }; @@ -110,18 +110,18 @@ void __init setup_per_cpu_areas(void) } if (!ptr) panic("Cannot allocate cpu data for CPU %d\n", i); - cpu_pda[i].data_offset = ptr - __per_cpu_start; + cpu_pda(i)->data_offset = ptr - __per_cpu_start; memcpy(ptr, __per_cpu_start, __per_cpu_end - __per_cpu_start); } } void pda_init(int cpu) { - struct x8664_pda *pda = &cpu_pda[cpu]; + struct x8664_pda *pda = cpu_pda(cpu); /* Setup up data that may be needed in __get_free_pages early */ asm volatile("movl %0,%%fs ; movl %0,%%gs" :: "r" (0)); - wrmsrl(MSR_GS_BASE, cpu_pda + cpu); + wrmsrl(MSR_GS_BASE, pda); pda->cpunumber = cpu; pda->irqcount = -1; diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c index 9947285..4884ca1 100644 --- a/arch/x86_64/kernel/smpboot.c +++ b/arch/x86_64/kernel/smpboot.c @@ -792,7 +792,7 @@ static int __cpuinit do_boot_cpu(int cpu, int apicid) do_rest: - cpu_pda[cpu].pcurrent = c_idle.idle; + cpu_pda(cpu)->pcurrent = c_idle.idle; start_rip = setup_trampoline(); diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c index 8d21d87..0827b14 100644 --- a/arch/x86_64/kernel/traps.c +++ b/arch/x86_64/kernel/traps.c @@ -70,7 +70,6 @@ asmlinkage void reserved(void); asmlinkage void alignment_check(void); asmlinkage void machine_check(void); asmlinkage void spurious_interrupt_bug(void); -asmlinkage void call_debug(void); struct notifier_block *die_chain; static DEFINE_SPINLOCK(die_notifier_lock); @@ -139,7 +138,7 @@ static unsigned long *in_exception_stack(unsigned cpu, unsigned long stack, switch (k + 1) { #if DEBUG_STKSZ > EXCEPTION_STKSZ case DEBUG_STACK: - end = cpu_pda[cpu].debugstack + DEBUG_STKSZ; + end = cpu_pda(cpu)->debugstack + DEBUG_STKSZ; break; #endif default: @@ -186,7 +185,7 @@ void show_trace(unsigned long *stack) { unsigned long addr; const unsigned cpu = safe_smp_processor_id(); - unsigned long *irqstack_end = (unsigned long *)cpu_pda[cpu].irqstackptr; + unsigned long *irqstack_end = (unsigned long *)cpu_pda(cpu)->irqstackptr; int i; unsigned used = 0; @@ -254,8 +253,8 @@ void show_stack(struct task_struct *tsk, unsigned long * rsp) unsigned long *stack; int i; const int cpu = safe_smp_processor_id(); - unsigned long *irqstack_end = (unsigned long *) (cpu_pda[cpu].irqstackptr); - unsigned long *irqstack = (unsigned long *) (cpu_pda[cpu].irqstackptr - IRQSTACKSIZE); + unsigned long *irqstack_end = (unsigned long *) (cpu_pda(cpu)->irqstackptr); + unsigned long *irqstack = (unsigned long *) (cpu_pda(cpu)->irqstackptr - IRQSTACKSIZE); // debugging aid: "show_stack(NULL, NULL);" prints the // back trace for this cpu. @@ -303,7 +302,7 @@ void show_registers(struct pt_regs *regs) int in_kernel = !user_mode(regs); unsigned long rsp; const int cpu = safe_smp_processor_id(); - struct task_struct *cur = cpu_pda[cpu].pcurrent; + struct task_struct *cur = cpu_pda(cpu)->pcurrent; rsp = regs->rsp; diff --git a/arch/x86_64/kernel/x8664_ksyms.c b/arch/x86_64/kernel/x8664_ksyms.c index 3008b83..901f8b0 100644 --- a/arch/x86_64/kernel/x8664_ksyms.c +++ b/arch/x86_64/kernel/x8664_ksyms.c @@ -96,7 +96,7 @@ EXPORT_SYMBOL(pci_mem_start); EXPORT_SYMBOL(copy_page); EXPORT_SYMBOL(clear_page); -EXPORT_SYMBOL(cpu_pda); +EXPORT_SYMBOL(_cpu_pda); #ifdef CONFIG_SMP EXPORT_SYMBOL(cpu_data); EXPORT_SYMBOL(__write_lock_failed); diff --git a/arch/x86_64/mm/numa.c b/arch/x86_64/mm/numa.c index 876e343..994dbaeb 100644 --- a/arch/x86_64/mm/numa.c +++ b/arch/x86_64/mm/numa.c @@ -272,7 +272,7 @@ __cpuinit void numa_add_cpu(int cpu) void __cpuinit numa_set_node(int cpu, int node) { - cpu_pda[cpu].nodenumber = node; + cpu_pda(cpu)->nodenumber = node; cpu_to_node[cpu] = node; } diff --git a/include/asm-x86_64/pda.h b/include/asm-x86_64/pda.h index 431a909..dc33d28 100644 --- a/include/asm-x86_64/pda.h +++ b/include/asm-x86_64/pda.h @@ -27,7 +27,9 @@ struct x8664_pda { unsigned apic_timer_irqs; } ____cacheline_aligned_in_smp; -extern struct x8664_pda cpu_pda[]; +extern struct x8664_pda _cpu_pda[]; + +#define cpu_pda(i) (&_cpu_pda[i]) /* * There is no fast way to get the base address of the PDA, all the accesses diff --git a/include/asm-x86_64/percpu.h b/include/asm-x86_64/percpu.h index 9c71855..29a6b04 100644 --- a/include/asm-x86_64/percpu.h +++ b/include/asm-x86_64/percpu.h @@ -11,7 +11,7 @@ #include -#define __per_cpu_offset(cpu) (cpu_pda[cpu].data_offset) +#define __per_cpu_offset(cpu) (cpu_pda(cpu)->data_offset) #define __my_cpu_offset() read_pda(data_offset) /* Separate out the type, so (int[3], foo) works. */