mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-02 07:04:24 +00:00
Code Issues Releases Wiki Activity

parisc: Replace NR_CPUS in parisc code

Browse source 
parisc: Replace most arrays sized by NR_CPUS with percpu variables.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
This commit is contained in:
Helge Deller 2008-12-31 03:12:10 +00:00 committed by Kyle McMartin
parent 7f2347a44d
commit ef017bebd0
8 changed files with 64 additions and 59 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
arch/parisc/include/asm/processor.h
View file

@ -17,6 +17,7 @@
#include <asm/ptrace.h>
#include <asm/types.h>
#include <asm/system.h>
#include <asm/percpu.h>
#endif /* __ASSEMBLY__ */
#define KERNEL_STACK_SIZE (4*PAGE_SIZE)
@ -109,8 +110,7 @@ struct cpuinfo_parisc {
};
extern struct system_cpuinfo_parisc boot_cpu_data;
extern struct cpuinfo_parisc cpu_data[NR_CPUS];
#define current_cpu_data cpu_data[smp_processor_id()]
DECLARE_PER_CPU(struct cpuinfo_parisc, cpu_data);
#define CPU_HVERSION ((boot_cpu_data.hversion >> 4) & 0x0FFF)

9
arch/parisc/kernel/irq.c
View file

@ -298,7 +298,7 @@ unsigned long txn_affinity_addr(unsigned int irq, int cpu)
irq_desc[irq].affinity = cpumask_of_cpu(cpu);
#endif
return cpu_data[cpu].txn_addr;
return per_cpu(cpu_data, cpu).txn_addr;
}
@ -309,8 +309,9 @@ unsigned long txn_alloc_addr(unsigned int virt_irq)
next_cpu++; /* assign to "next" CPU we want this bugger on */
/* validate entry */
while ((next_cpu < NR_CPUS) && (!cpu_data[next_cpu].txn_addr ||
!cpu_online(next_cpu)))
while ((next_cpu < NR_CPUS) &&
(!per_cpu(cpu_data, next_cpu).txn_addr ||
!cpu_online(next_cpu)))
next_cpu++;
if (next_cpu >= NR_CPUS)
@ -359,7 +360,7 @@ void do_cpu_irq_mask(struct pt_regs *regs)
printk(KERN_DEBUG "redirecting irq %d from CPU %d to %d\n",
irq, smp_processor_id(), cpu);
gsc_writel(irq + CPU_IRQ_BASE,
cpu_data[cpu].hpa);
per_cpu(cpu_data, cpu).hpa);
goto set_out;
}
#endif

4
arch/parisc/kernel/perf.c
View file

@ -541,9 +541,9 @@ static int __init perf_init(void)
spin_lock_init(&perf_lock);
/* TODO: this only lets us access the first cpu.. what to do for SMP? */
cpu_device = cpu_data[0].dev;
cpu_device = per_cpu(cpu_data, 0).dev;
printk("Performance monitoring counters enabled for %s\n",
cpu_data[0].dev->name);
per_cpu(cpu_data, 0).dev->name);
return 0;
}

68
arch/parisc/kernel/processor.c
View file

@ -3,7 +3,7 @@
* Initial setup-routines for HP 9000 based hardware.
*
* Copyright (C) 1991, 1992, 1995 Linus Torvalds
* Modifications for PA-RISC (C) 1999 Helge Deller <deller@gmx.de>
* Modifications for PA-RISC (C) 1999-2008 Helge Deller <deller@gmx.de>
* Modifications copyright 1999 SuSE GmbH (Philipp Rumpf)
* Modifications copyright 2000 Martin K. Petersen <mkp@mkp.net>
* Modifications copyright 2000 Philipp Rumpf <prumpf@tux.org>
@ -46,7 +46,7 @@
struct system_cpuinfo_parisc boot_cpu_data __read_mostly;
EXPORT_SYMBOL(boot_cpu_data);
struct cpuinfo_parisc cpu_data[NR_CPUS] __read_mostly;
DEFINE_PER_CPU(struct cpuinfo_parisc, cpu_data);
extern int update_cr16_clocksource(void); /* from time.c */
@ -68,6 +68,23 @@ extern int update_cr16_clocksource(void); /* from time.c */
** The initialization of OS data structures is the same (done below).
*/
/**
* init_cpu_profiler - enable/setup per cpu profiling hooks.
* @cpunum: The processor instance.
*
* FIXME: doesn't do much yet...
*/
static void __cpuinit
init_percpu_prof(unsigned long cpunum)
{
struct cpuinfo_parisc *p;
p = &per_cpu(cpu_data, cpunum);
p->prof_counter = 1;
p->prof_multiplier = 1;
}
/**
* processor_probe - Determine if processor driver should claim this device.
* @dev: The device which has been found.
@ -147,7 +164,7 @@ static int __cpuinit processor_probe(struct parisc_device *dev)
}
#endif
p = &cpu_data[cpuid];
p = &per_cpu(cpu_data, cpuid);
boot_cpu_data.cpu_count++;
/* initialize counters - CPU 0 gets it_value set in time_init() */
@ -162,12 +179,9 @@ static int __cpuinit processor_probe(struct parisc_device *dev)
#ifdef CONFIG_SMP
/*
** FIXME: review if any other initialization is clobbered
** for boot_cpu by the above memset().
** for boot_cpu by the above memset().
*/
/* stolen from init_percpu_prof() */
cpu_data[cpuid].prof_counter = 1;
cpu_data[cpuid].prof_multiplier = 1;
init_percpu_prof(cpuid);
#endif
/*
@ -261,19 +275,6 @@ void __init collect_boot_cpu_data(void)
}
/**
* init_cpu_profiler - enable/setup per cpu profiling hooks.
* @cpunum: The processor instance.
*
* FIXME: doesn't do much yet...
*/
static inline void __init
init_percpu_prof(int cpunum)
{
cpu_data[cpunum].prof_counter = 1;
cpu_data[cpunum].prof_multiplier = 1;
}
/**
* init_per_cpu - Handle individual processor initializations.
@ -293,7 +294,7 @@ init_percpu_prof(int cpunum)
*
* o Enable CPU profiling hooks.
*/
int __init init_per_cpu(int cpunum)
int __cpuinit init_per_cpu(int cpunum)
{
int ret;
struct pdc_coproc_cfg coproc_cfg;
@ -307,8 +308,8 @@ int __init init_per_cpu(int cpunum)
/* FWIW, FP rev/model is a more accurate way to determine
** CPU type. CPU rev/model has some ambiguous cases.
*/
cpu_data[cpunum].fp_rev = coproc_cfg.revision;
cpu_data[cpunum].fp_model = coproc_cfg.model;
per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;
printk(KERN_INFO "FP[%d] enabled: Rev %ld Model %ld\n",
cpunum, coproc_cfg.revision, coproc_cfg.model);
@ -344,16 +345,17 @@ int __init init_per_cpu(int cpunum)
int
show_cpuinfo (struct seq_file *m, void *v)
{
int n;
unsigned long cpu;
for(n=0; n<boot_cpu_data.cpu_count; n++) {
for_each_online_cpu(cpu) {
const struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu);
#ifdef CONFIG_SMP
if (0 == cpu_data[n].hpa)
if (0 == cpuinfo->hpa)
continue;
#endif
seq_printf(m, "processor\t: %d\n"
seq_printf(m, "processor\t: %lu\n"
"cpu family\t: PA-RISC %s\n",
n, boot_cpu_data.family_name);
cpu, boot_cpu_data.family_name);
seq_printf(m, "cpu\t\t: %s\n", boot_cpu_data.cpu_name );
@ -365,8 +367,8 @@ show_cpuinfo (struct seq_file *m, void *v)
seq_printf(m, "model\t\t: %s\n"
"model name\t: %s\n",
boot_cpu_data.pdc.sys_model_name,
cpu_data[n].dev ?
cpu_data[n].dev->name : "Unknown" );
cpuinfo->dev ?
cpuinfo->dev->name : "Unknown");
seq_printf(m, "hversion\t: 0x%08x\n"
"sversion\t: 0x%08x\n",
@ -377,8 +379,8 @@ show_cpuinfo (struct seq_file *m, void *v)
show_cache_info(m);
seq_printf(m, "bogomips\t: %lu.%02lu\n",
cpu_data[n].loops_per_jiffy / (500000 / HZ),
(cpu_data[n].loops_per_jiffy / (5000 / HZ)) % 100);
cpuinfo->loops_per_jiffy / (500000 / HZ),
(cpuinfo->loops_per_jiffy / (5000 / HZ)) % 100);
seq_printf(m, "software id\t: %ld\n\n",
boot_cpu_data.pdc.model.sw_id);

6
arch/parisc/kernel/setup.c
View file

@ -316,7 +316,7 @@ static int __init parisc_init(void)
processor_init();
printk(KERN_INFO "CPU(s): %d x %s at %d.%06d MHz\n",
boot_cpu_data.cpu_count,
num_present_cpus(),
boot_cpu_data.cpu_name,
boot_cpu_data.cpu_hz / 1000000,
boot_cpu_data.cpu_hz % 1000000 );
@ -382,8 +382,8 @@ void start_parisc(void)
if (ret >= 0 && coproc_cfg.ccr_functional) {
mtctl(coproc_cfg.ccr_functional, 10);
cpu_data[cpunum].fp_rev = coproc_cfg.revision;
cpu_data[cpunum].fp_model = coproc_cfg.model;
per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;
asm volatile ("fstd %fr0,8(%sp)");
} else {

24
arch/parisc/kernel/smp.c
View file

@ -56,16 +56,17 @@ static int smp_debug_lvl = 0;
if (lvl >= smp_debug_lvl) \
printk(printargs);
#else
#define smp_debug(lvl, ...)
#define smp_debug(lvl, ...) do { } while(0)
#endif /* DEBUG_SMP */
DEFINE_SPINLOCK(smp_lock);
volatile struct task_struct *smp_init_current_idle_task;
static volatile int cpu_now_booting __read_mostly = 0; /* track which CPU is booting */
/* track which CPU is booting */
static volatile int cpu_now_booting __cpuinitdata;
static int parisc_max_cpus __read_mostly = 1;
static int parisc_max_cpus __cpuinitdata = 1;
DEFINE_PER_CPU(spinlock_t, ipi_lock) = SPIN_LOCK_UNLOCKED;
@ -123,7 +124,7 @@ irqreturn_t
ipi_interrupt(int irq, void *dev_id)
{
int this_cpu = smp_processor_id();
struct cpuinfo_parisc *p = &cpu_data[this_cpu];
struct cpuinfo_parisc *p = &per_cpu(cpu_data, this_cpu);
unsigned long ops;
unsigned long flags;
@ -202,13 +203,13 @@ ipi_interrupt(int irq, void *dev_id)
static inline void
ipi_send(int cpu, enum ipi_message_type op)
{
struct cpuinfo_parisc *p = &cpu_data[cpu];
struct cpuinfo_parisc *p = &per_cpu(cpu_data, cpu);
spinlock_t *lock = &per_cpu(ipi_lock, cpu);
unsigned long flags;
spin_lock_irqsave(lock, flags);
p->pending_ipi |= 1 << op;
gsc_writel(IPI_IRQ - CPU_IRQ_BASE, cpu_data[cpu].hpa);
gsc_writel(IPI_IRQ - CPU_IRQ_BASE, p->hpa);
spin_unlock_irqrestore(lock, flags);
}
@ -341,6 +342,7 @@ void __init smp_callin(void)
*/
int __cpuinit smp_boot_one_cpu(int cpuid)
{
const struct cpuinfo_parisc *p = &per_cpu(cpu_data, cpuid);
struct task_struct *idle;
long timeout;
@ -372,7 +374,7 @@ int __cpuinit smp_boot_one_cpu(int cpuid)
smp_init_current_idle_task = idle ;
mb();
printk("Releasing cpu %d now, hpa=%lx\n", cpuid, cpu_data[cpuid].hpa);
printk(KERN_INFO "Releasing cpu %d now, hpa=%lx\n", cpuid, p->hpa);
/*
** This gets PDC to release the CPU from a very tight loop.
@ -383,7 +385,7 @@ int __cpuinit smp_boot_one_cpu(int cpuid)
** EIR{0}). MEM_RENDEZ is valid only when it is nonzero and the
** contents of memory are valid."
*/
gsc_writel(TIMER_IRQ - CPU_IRQ_BASE, cpu_data[cpuid].hpa);
gsc_writel(TIMER_IRQ - CPU_IRQ_BASE, p->hpa);
mb();
/*
@ -415,12 +417,12 @@ int __cpuinit smp_boot_one_cpu(int cpuid)
return 0;
}
void __devinit smp_prepare_boot_cpu(void)
void __init smp_prepare_boot_cpu(void)
{
int bootstrap_processor=cpu_data[0].cpuid; /* CPU ID of BSP */
int bootstrap_processor = per_cpu(cpu_data, 0).cpuid;
/* Setup BSP mappings */
printk("SMP: bootstrap CPU ID is %d\n",bootstrap_processor);
printk(KERN_INFO "SMP: bootstrap CPU ID is %d\n", bootstrap_processor);
cpu_set(bootstrap_processor, cpu_online_map);
cpu_set(bootstrap_processor, cpu_present_map);

4
arch/parisc/kernel/time.c
View file

@ -60,7 +60,7 @@ irqreturn_t timer_interrupt(int irq, void *dev_id)
unsigned long cycles_elapsed, ticks_elapsed;
unsigned long cycles_remainder;
unsigned int cpu = smp_processor_id();
struct cpuinfo_parisc *cpuinfo = &cpu_data[cpu];
struct cpuinfo_parisc *cpuinfo = &per_cpu(cpu_data, cpu);
/* gcc can optimize for "read-only" case with a local clocktick */
unsigned long cpt = clocktick;
@ -213,7 +213,7 @@ void __init start_cpu_itimer(void)
mtctl(next_tick, 16); /* kick off Interval Timer (CR16) */
cpu_data[cpu].it_value = next_tick;
per_cpu(cpu_data, cpu).it_value = next_tick;
}
struct platform_device rtc_parisc_dev = {

4
arch/parisc/kernel/topology.c
View file

@ -22,14 +22,14 @@
#include <linux/cpu.h>
#include <linux/cache.h>
static struct cpu cpu_devices[NR_CPUS] __read_mostly;
static DEFINE_PER_CPU(struct cpu, cpu_devices);
static int __init topology_init(void)
{
int num;
for_each_present_cpu(num) {
register_cpu(&cpu_devices[num], num);
register_cpu(&per_cpu(cpu_devices, num), num);
}
return 0;
}