mirror of https://gitee.com/openkylin/linux.git
315 lines
8.7 KiB
C
315 lines
8.7 KiB
C
/* sysfs.c: Toplogy sysfs support code for sparc64.
|
|
*
|
|
* Copyright (C) 2007 David S. Miller <davem@davemloft.net>
|
|
*/
|
|
#include <linux/sysdev.h>
|
|
#include <linux/cpu.h>
|
|
#include <linux/smp.h>
|
|
#include <linux/percpu.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/cpudata.h>
|
|
#include <asm/hypervisor.h>
|
|
#include <asm/spitfire.h>
|
|
|
|
static DEFINE_PER_CPU(struct hv_mmu_statistics, mmu_stats) __attribute__((aligned(64)));
|
|
|
|
#define SHOW_MMUSTAT_ULONG(NAME) \
|
|
static ssize_t show_##NAME(struct sys_device *dev, \
|
|
struct sysdev_attribute *attr, char *buf) \
|
|
{ \
|
|
struct hv_mmu_statistics *p = &per_cpu(mmu_stats, dev->id); \
|
|
return sprintf(buf, "%lu\n", p->NAME); \
|
|
} \
|
|
static SYSDEV_ATTR(NAME, 0444, show_##NAME, NULL)
|
|
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_8k_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_8k_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_64k_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_64k_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_4mb_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_4mb_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctx0_256mb_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctx0_256mb_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_8k_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_8k_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_64k_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_64k_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_4mb_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_4mb_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_hits_ctxnon0_256mb_tte);
|
|
SHOW_MMUSTAT_ULONG(immu_tsb_ticks_ctxnon0_256mb_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_8k_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_8k_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_64k_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_64k_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_4mb_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_4mb_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctx0_256mb_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctx0_256mb_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_8k_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_8k_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_64k_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_64k_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_4mb_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_4mb_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_hits_ctxnon0_256mb_tte);
|
|
SHOW_MMUSTAT_ULONG(dmmu_tsb_ticks_ctxnon0_256mb_tte);
|
|
|
|
static struct attribute *mmu_stat_attrs[] = {
|
|
&attr_immu_tsb_hits_ctx0_8k_tte.attr,
|
|
&attr_immu_tsb_ticks_ctx0_8k_tte.attr,
|
|
&attr_immu_tsb_hits_ctx0_64k_tte.attr,
|
|
&attr_immu_tsb_ticks_ctx0_64k_tte.attr,
|
|
&attr_immu_tsb_hits_ctx0_4mb_tte.attr,
|
|
&attr_immu_tsb_ticks_ctx0_4mb_tte.attr,
|
|
&attr_immu_tsb_hits_ctx0_256mb_tte.attr,
|
|
&attr_immu_tsb_ticks_ctx0_256mb_tte.attr,
|
|
&attr_immu_tsb_hits_ctxnon0_8k_tte.attr,
|
|
&attr_immu_tsb_ticks_ctxnon0_8k_tte.attr,
|
|
&attr_immu_tsb_hits_ctxnon0_64k_tte.attr,
|
|
&attr_immu_tsb_ticks_ctxnon0_64k_tte.attr,
|
|
&attr_immu_tsb_hits_ctxnon0_4mb_tte.attr,
|
|
&attr_immu_tsb_ticks_ctxnon0_4mb_tte.attr,
|
|
&attr_immu_tsb_hits_ctxnon0_256mb_tte.attr,
|
|
&attr_immu_tsb_ticks_ctxnon0_256mb_tte.attr,
|
|
&attr_dmmu_tsb_hits_ctx0_8k_tte.attr,
|
|
&attr_dmmu_tsb_ticks_ctx0_8k_tte.attr,
|
|
&attr_dmmu_tsb_hits_ctx0_64k_tte.attr,
|
|
&attr_dmmu_tsb_ticks_ctx0_64k_tte.attr,
|
|
&attr_dmmu_tsb_hits_ctx0_4mb_tte.attr,
|
|
&attr_dmmu_tsb_ticks_ctx0_4mb_tte.attr,
|
|
&attr_dmmu_tsb_hits_ctx0_256mb_tte.attr,
|
|
&attr_dmmu_tsb_ticks_ctx0_256mb_tte.attr,
|
|
&attr_dmmu_tsb_hits_ctxnon0_8k_tte.attr,
|
|
&attr_dmmu_tsb_ticks_ctxnon0_8k_tte.attr,
|
|
&attr_dmmu_tsb_hits_ctxnon0_64k_tte.attr,
|
|
&attr_dmmu_tsb_ticks_ctxnon0_64k_tte.attr,
|
|
&attr_dmmu_tsb_hits_ctxnon0_4mb_tte.attr,
|
|
&attr_dmmu_tsb_ticks_ctxnon0_4mb_tte.attr,
|
|
&attr_dmmu_tsb_hits_ctxnon0_256mb_tte.attr,
|
|
&attr_dmmu_tsb_ticks_ctxnon0_256mb_tte.attr,
|
|
NULL,
|
|
};
|
|
|
|
static struct attribute_group mmu_stat_group = {
|
|
.attrs = mmu_stat_attrs,
|
|
.name = "mmu_stats",
|
|
};
|
|
|
|
/* XXX convert to rusty's on_one_cpu */
|
|
static unsigned long run_on_cpu(unsigned long cpu,
|
|
unsigned long (*func)(unsigned long),
|
|
unsigned long arg)
|
|
{
|
|
cpumask_t old_affinity = current->cpus_allowed;
|
|
unsigned long ret;
|
|
|
|
/* should return -EINVAL to userspace */
|
|
if (set_cpus_allowed(current, cpumask_of_cpu(cpu)))
|
|
return 0;
|
|
|
|
ret = func(arg);
|
|
|
|
set_cpus_allowed(current, old_affinity);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static unsigned long read_mmustat_enable(unsigned long junk)
|
|
{
|
|
unsigned long ra = 0;
|
|
|
|
sun4v_mmustat_info(&ra);
|
|
|
|
return ra != 0;
|
|
}
|
|
|
|
static unsigned long write_mmustat_enable(unsigned long val)
|
|
{
|
|
unsigned long ra, orig_ra;
|
|
|
|
if (val)
|
|
ra = __pa(&per_cpu(mmu_stats, smp_processor_id()));
|
|
else
|
|
ra = 0UL;
|
|
|
|
return sun4v_mmustat_conf(ra, &orig_ra);
|
|
}
|
|
|
|
static ssize_t show_mmustat_enable(struct sys_device *s,
|
|
struct sysdev_attribute *attr, char *buf)
|
|
{
|
|
unsigned long val = run_on_cpu(s->id, read_mmustat_enable, 0);
|
|
return sprintf(buf, "%lx\n", val);
|
|
}
|
|
|
|
static ssize_t store_mmustat_enable(struct sys_device *s,
|
|
struct sysdev_attribute *attr, const char *buf,
|
|
size_t count)
|
|
{
|
|
unsigned long val, err;
|
|
int ret = sscanf(buf, "%ld", &val);
|
|
|
|
if (ret != 1)
|
|
return -EINVAL;
|
|
|
|
err = run_on_cpu(s->id, write_mmustat_enable, val);
|
|
if (err)
|
|
return -EIO;
|
|
|
|
return count;
|
|
}
|
|
|
|
static SYSDEV_ATTR(mmustat_enable, 0644, show_mmustat_enable, store_mmustat_enable);
|
|
|
|
static int mmu_stats_supported;
|
|
|
|
static int register_mmu_stats(struct sys_device *s)
|
|
{
|
|
if (!mmu_stats_supported)
|
|
return 0;
|
|
sysdev_create_file(s, &attr_mmustat_enable);
|
|
return sysfs_create_group(&s->kobj, &mmu_stat_group);
|
|
}
|
|
|
|
#ifdef CONFIG_HOTPLUG_CPU
|
|
static void unregister_mmu_stats(struct sys_device *s)
|
|
{
|
|
if (!mmu_stats_supported)
|
|
return;
|
|
sysfs_remove_group(&s->kobj, &mmu_stat_group);
|
|
sysdev_remove_file(s, &attr_mmustat_enable);
|
|
}
|
|
#endif
|
|
|
|
#define SHOW_CPUDATA_ULONG_NAME(NAME, MEMBER) \
|
|
static ssize_t show_##NAME(struct sys_device *dev, \
|
|
struct sysdev_attribute *attr, char *buf) \
|
|
{ \
|
|
cpuinfo_sparc *c = &cpu_data(dev->id); \
|
|
return sprintf(buf, "%lu\n", c->MEMBER); \
|
|
}
|
|
|
|
#define SHOW_CPUDATA_UINT_NAME(NAME, MEMBER) \
|
|
static ssize_t show_##NAME(struct sys_device *dev, \
|
|
struct sysdev_attribute *attr, char *buf) \
|
|
{ \
|
|
cpuinfo_sparc *c = &cpu_data(dev->id); \
|
|
return sprintf(buf, "%u\n", c->MEMBER); \
|
|
}
|
|
|
|
SHOW_CPUDATA_ULONG_NAME(clock_tick, clock_tick);
|
|
SHOW_CPUDATA_UINT_NAME(l1_dcache_size, dcache_size);
|
|
SHOW_CPUDATA_UINT_NAME(l1_dcache_line_size, dcache_line_size);
|
|
SHOW_CPUDATA_UINT_NAME(l1_icache_size, icache_size);
|
|
SHOW_CPUDATA_UINT_NAME(l1_icache_line_size, icache_line_size);
|
|
SHOW_CPUDATA_UINT_NAME(l2_cache_size, ecache_size);
|
|
SHOW_CPUDATA_UINT_NAME(l2_cache_line_size, ecache_line_size);
|
|
|
|
static struct sysdev_attribute cpu_core_attrs[] = {
|
|
_SYSDEV_ATTR(clock_tick, 0444, show_clock_tick, NULL),
|
|
_SYSDEV_ATTR(l1_dcache_size, 0444, show_l1_dcache_size, NULL),
|
|
_SYSDEV_ATTR(l1_dcache_line_size, 0444, show_l1_dcache_line_size, NULL),
|
|
_SYSDEV_ATTR(l1_icache_size, 0444, show_l1_icache_size, NULL),
|
|
_SYSDEV_ATTR(l1_icache_line_size, 0444, show_l1_icache_line_size, NULL),
|
|
_SYSDEV_ATTR(l2_cache_size, 0444, show_l2_cache_size, NULL),
|
|
_SYSDEV_ATTR(l2_cache_line_size, 0444, show_l2_cache_line_size, NULL),
|
|
};
|
|
|
|
static DEFINE_PER_CPU(struct cpu, cpu_devices);
|
|
|
|
static void register_cpu_online(unsigned int cpu)
|
|
{
|
|
struct cpu *c = &per_cpu(cpu_devices, cpu);
|
|
struct sys_device *s = &c->sysdev;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
|
|
sysdev_create_file(s, &cpu_core_attrs[i]);
|
|
|
|
register_mmu_stats(s);
|
|
}
|
|
|
|
#ifdef CONFIG_HOTPLUG_CPU
|
|
static void unregister_cpu_online(unsigned int cpu)
|
|
{
|
|
struct cpu *c = &per_cpu(cpu_devices, cpu);
|
|
struct sys_device *s = &c->sysdev;
|
|
int i;
|
|
|
|
unregister_mmu_stats(s);
|
|
for (i = 0; i < ARRAY_SIZE(cpu_core_attrs); i++)
|
|
sysdev_remove_file(s, &cpu_core_attrs[i]);
|
|
}
|
|
#endif
|
|
|
|
static int __cpuinit sysfs_cpu_notify(struct notifier_block *self,
|
|
unsigned long action, void *hcpu)
|
|
{
|
|
unsigned int cpu = (unsigned int)(long)hcpu;
|
|
|
|
switch (action) {
|
|
case CPU_ONLINE:
|
|
case CPU_ONLINE_FROZEN:
|
|
register_cpu_online(cpu);
|
|
break;
|
|
#ifdef CONFIG_HOTPLUG_CPU
|
|
case CPU_DEAD:
|
|
case CPU_DEAD_FROZEN:
|
|
unregister_cpu_online(cpu);
|
|
break;
|
|
#endif
|
|
}
|
|
return NOTIFY_OK;
|
|
}
|
|
|
|
static struct notifier_block __cpuinitdata sysfs_cpu_nb = {
|
|
.notifier_call = sysfs_cpu_notify,
|
|
};
|
|
|
|
static void __init check_mmu_stats(void)
|
|
{
|
|
unsigned long dummy1, err;
|
|
|
|
if (tlb_type != hypervisor)
|
|
return;
|
|
|
|
err = sun4v_mmustat_info(&dummy1);
|
|
if (!err)
|
|
mmu_stats_supported = 1;
|
|
}
|
|
|
|
static void register_nodes(void)
|
|
{
|
|
#ifdef CONFIG_NUMA
|
|
int i;
|
|
|
|
for (i = 0; i < MAX_NUMNODES; i++)
|
|
register_one_node(i);
|
|
#endif
|
|
}
|
|
|
|
static int __init topology_init(void)
|
|
{
|
|
int cpu;
|
|
|
|
register_nodes();
|
|
|
|
check_mmu_stats();
|
|
|
|
register_cpu_notifier(&sysfs_cpu_nb);
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
struct cpu *c = &per_cpu(cpu_devices, cpu);
|
|
|
|
register_cpu(c, cpu);
|
|
if (cpu_online(cpu))
|
|
register_cpu_online(cpu);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
subsys_initcall(topology_init);
|