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Subject[RFC 04/15] x86_64: Replace cpu_pda ops with percpu ops
  * Replace cpu_pda(i) references with percpu(pda, i).

Based on linux-2.6.tip/master

Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Mike Travis <travis@sgi.com>
---
arch/x86/kernel/cpu/common_64.c | 2 +-
arch/x86/kernel/irq_64.c | 36 ++++++++++++++++++++----------------
arch/x86/kernel/nmi.c | 2 +-
arch/x86/kernel/setup_percpu.c | 2 +-
arch/x86/kernel/smpboot.c | 2 +-
arch/x86/kernel/traps_64.c | 11 +++++++----
6 files changed, 31 insertions(+), 24 deletions(-)

--- linux-2.6.tip.orig/arch/x86/kernel/cpu/common_64.c
+++ linux-2.6.tip/arch/x86/kernel/cpu/common_64.c
@@ -477,7 +477,7 @@ __setup("noexec32=", nonx32_setup);

void pda_init(int cpu)
{
- struct x8664_pda *pda = cpu_pda(cpu);
+ struct x8664_pda *pda = &per_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));
--- linux-2.6.tip.orig/arch/x86/kernel/irq_64.c
+++ linux-2.6.tip/arch/x86/kernel/irq_64.c
@@ -115,39 +115,43 @@ skip:
} else if (i == NR_IRQS) {
seq_printf(p, "NMI: ");
for_each_online_cpu(j)
- seq_printf(p, "%10u ", cpu_pda(j)->__nmi_count);
+ seq_printf(p, "%10u ", per_cpu(pda.__nmi_count, j));
seq_printf(p, " Non-maskable interrupts\n");
seq_printf(p, "LOC: ");
for_each_online_cpu(j)
- seq_printf(p, "%10u ", cpu_pda(j)->apic_timer_irqs);
+ seq_printf(p, "%10u ", per_cpu(pda.apic_timer_irqs, j));
seq_printf(p, " Local timer interrupts\n");
#ifdef CONFIG_SMP
seq_printf(p, "RES: ");
for_each_online_cpu(j)
- seq_printf(p, "%10u ", cpu_pda(j)->irq_resched_count);
+ seq_printf(p, "%10u ",
+ per_cpu(pda.irq_resched_count, j));
seq_printf(p, " Rescheduling interrupts\n");
seq_printf(p, "CAL: ");
for_each_online_cpu(j)
- seq_printf(p, "%10u ", cpu_pda(j)->irq_call_count);
+ seq_printf(p, "%10u ", per_cpu(pda.irq_call_count, j));
seq_printf(p, " function call interrupts\n");
seq_printf(p, "TLB: ");
for_each_online_cpu(j)
- seq_printf(p, "%10u ", cpu_pda(j)->irq_tlb_count);
+ seq_printf(p, "%10u ", per_cpu(pda.irq_tlb_count, j));
seq_printf(p, " TLB shootdowns\n");
#endif
#ifdef CONFIG_X86_MCE
seq_printf(p, "TRM: ");
for_each_online_cpu(j)
- seq_printf(p, "%10u ", cpu_pda(j)->irq_thermal_count);
+ seq_printf(p, "%10u ",
+ per_cpu(pda.irq_thermal_count, j));
seq_printf(p, " Thermal event interrupts\n");
seq_printf(p, "THR: ");
for_each_online_cpu(j)
- seq_printf(p, "%10u ", cpu_pda(j)->irq_threshold_count);
+ seq_printf(p, "%10u ",
+ per_cpu(pda.irq_threshold_count, j));
seq_printf(p, " Threshold APIC interrupts\n");
#endif
seq_printf(p, "SPU: ");
for_each_online_cpu(j)
- seq_printf(p, "%10u ", cpu_pda(j)->irq_spurious_count);
+ seq_printf(p, "%10u ",
+ per_cpu(pda.irq_spurious_count, j));
seq_printf(p, " Spurious interrupts\n");
seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
}
@@ -159,19 +163,19 @@ skip:
*/
u64 arch_irq_stat_cpu(unsigned int cpu)
{
- u64 sum = cpu_pda(cpu)->__nmi_count;
+ u64 sum = per_cpu(pda.__nmi_count, cpu);

- sum += cpu_pda(cpu)->apic_timer_irqs;
+ sum += per_cpu(pda.apic_timer_irqs, cpu);
#ifdef CONFIG_SMP
- sum += cpu_pda(cpu)->irq_resched_count;
- sum += cpu_pda(cpu)->irq_call_count;
- sum += cpu_pda(cpu)->irq_tlb_count;
+ sum += per_cpu(pda.irq_resched_count, cpu);
+ sum += per_cpu(pda.irq_call_count, cpu);
+ sum += per_cpu(pda.irq_tlb_count, cpu);
#endif
#ifdef CONFIG_X86_MCE
- sum += cpu_pda(cpu)->irq_thermal_count;
- sum += cpu_pda(cpu)->irq_threshold_count;
+ sum += per_cpu(pda.irq_thermal_count, cpu);
+ sum += per_cpu(pda.irq_threshold_count, cpu);
#endif
- sum += cpu_pda(cpu)->irq_spurious_count;
+ sum += per_cpu(pda.irq_spurious_count, cpu);
return sum;
}

--- linux-2.6.tip.orig/arch/x86/kernel/nmi.c
+++ linux-2.6.tip/arch/x86/kernel/nmi.c
@@ -61,7 +61,7 @@ static int endflag __initdata;
static inline unsigned int get_nmi_count(int cpu)
{
#ifdef CONFIG_X86_64
- return cpu_pda(cpu)->__nmi_count;
+ return per_cpu(pda.__nmi_count, cpu);
#else
return nmi_count(cpu);
#endif
--- linux-2.6.tip.orig/arch/x86/kernel/setup_percpu.c
+++ linux-2.6.tip/arch/x86/kernel/setup_percpu.c
@@ -279,7 +279,7 @@ void __cpuinit numa_set_node(int cpu, in
per_cpu(x86_cpu_to_node_map, cpu) = node;

if (node != NUMA_NO_NODE)
- cpu_pda(cpu)->nodenumber = node;
+ per_cpu(pda.nodenumber, cpu) = node;
}

void __cpuinit numa_clear_node(int cpu)
--- linux-2.6.tip.orig/arch/x86/kernel/smpboot.c
+++ linux-2.6.tip/arch/x86/kernel/smpboot.c
@@ -814,7 +814,7 @@ do_rest:
/* Stack for startup_32 can be just as for start_secondary onwards */
irq_ctx_init(cpu);
#else
- cpu_pda(cpu)->pcurrent = c_idle.idle;
+ per_cpu(pda.pcurrent, cpu) = c_idle.idle;
clear_tsk_thread_flag(c_idle.idle, TIF_FORK);
initial_pda = (unsigned long)get_cpu_pda(cpu);
#endif
--- linux-2.6.tip.orig/arch/x86/kernel/traps_64.c
+++ linux-2.6.tip/arch/x86/kernel/traps_64.c
@@ -265,7 +265,8 @@ void dump_trace(struct task_struct *tsk,
const struct stacktrace_ops *ops, void *data)
{
const unsigned cpu = get_cpu();
- unsigned long *irqstack_end = (unsigned long*)cpu_pda(cpu)->irqstackptr;
+ unsigned long *irqstack_end =
+ (unsigned long *)per_cpu(pda.irqstackptr, cpu);
unsigned used = 0;
struct thread_info *tinfo;

@@ -399,8 +400,10 @@ _show_stack(struct task_struct *tsk, str
unsigned long *stack;
int i;
const int cpu = 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 *)per_cpu(pda.irqstackptr, cpu);
+ unsigned long *irqstack =
+ (unsigned long *)(irqstack_end - IRQSTACKSIZE);

// debugging aid: "show_stack(NULL, NULL);" prints the
// back trace for this cpu.
@@ -464,7 +467,7 @@ void show_registers(struct pt_regs *regs
int i;
unsigned long sp;
const int cpu = smp_processor_id();
- struct task_struct *cur = cpu_pda(cpu)->pcurrent;
+ struct task_struct *cur = __get_cpu_var(pda.pcurrent);
u8 *ip;
unsigned int code_prologue = code_bytes * 43 / 64;
unsigned int code_len = code_bytes;
--


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