mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 21:38:32 +08:00
[SPARC64]: Provide mmu statistics via sysfs.
If the system supports hypervisor based statistics, allow them to be fetched, enabled, and disabled via sysfs. Enable and disable via the boolean: /sys/devices/systems/cpu/cpuN/mmustat_enable Statistic values are provided under: /sys/devices/systems/cpu/cpuN/mmu_status/ Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Miller
David S. Miller
parent
48b6735640
commit
d887ab3a9b
@ -2570,3 +2570,25 @@ sun4v_svc_clrstatus:
|
||||
retl
|
||||
nop
|
||||
.size sun4v_svc_clrstatus, .-sun4v_svc_clrstatus
|
||||
|
||||
.globl sun4v_mmustat_conf
|
||||
.type sun4v_mmustat_conf,#function
|
||||
sun4v_mmustat_conf:
|
||||
mov %o1, %o4
|
||||
mov HV_FAST_MMUSTAT_CONF, %o5
|
||||
ta HV_FAST_TRAP
|
||||
stx %o1, [%o4]
|
||||
retl
|
||||
nop
|
||||
.size sun4v_mmustat_conf, .-sun4v_mmustat_conf
|
||||
|
||||
.globl sun4v_mmustat_info
|
||||
.type sun4v_mmustat_info,#function
|
||||
sun4v_mmustat_info:
|
||||
mov %o0, %o4
|
||||
mov HV_FAST_MMUSTAT_INFO, %o5
|
||||
ta HV_FAST_TRAP
|
||||
stx %o1, [%o4]
|
||||
retl
|
||||
nop
|
||||
.size sun4v_mmustat_info, .-sun4v_mmustat_info
|
||||
|
||||
@ -8,32 +8,198 @@
|
||||
#include <linux/percpu.h>
|
||||
#include <linux/init.h>
|
||||
|
||||
static DEFINE_PER_CPU(struct cpu, cpu_devices);
|
||||
#include <asm/hypervisor.h>
|
||||
#include <asm/spitfire.h>
|
||||
|
||||
#define SHOW_ULONG_NAME(NAME, MEMBER) \
|
||||
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, char *buf) \
|
||||
{ \
|
||||
struct cpu *cpu = container_of(dev, struct cpu, sysdev); \
|
||||
cpuinfo_sparc *c = &cpu_data(cpu->sysdev.id); \
|
||||
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, 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, 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, char *buf) \
|
||||
{ \
|
||||
cpuinfo_sparc *c = &cpu_data(dev->id); \
|
||||
return sprintf(buf, "%lu\n", c->MEMBER); \
|
||||
}
|
||||
|
||||
#define SHOW_UINT_NAME(NAME, MEMBER) \
|
||||
#define SHOW_CPUDATA_UINT_NAME(NAME, MEMBER) \
|
||||
static ssize_t show_##NAME(struct sys_device *dev, char *buf) \
|
||||
{ \
|
||||
struct cpu *cpu = container_of(dev, struct cpu, sysdev); \
|
||||
cpuinfo_sparc *c = &cpu_data(cpu->sysdev.id); \
|
||||
cpuinfo_sparc *c = &cpu_data(dev->id); \
|
||||
return sprintf(buf, "%u\n", c->MEMBER); \
|
||||
}
|
||||
|
||||
SHOW_ULONG_NAME(clock_tick, clock_tick);
|
||||
SHOW_ULONG_NAME(udelay_val, udelay_val);
|
||||
SHOW_UINT_NAME(l1_dcache_size, dcache_size);
|
||||
SHOW_UINT_NAME(l1_dcache_line_size, dcache_line_size);
|
||||
SHOW_UINT_NAME(l1_icache_size, icache_size);
|
||||
SHOW_UINT_NAME(l1_icache_line_size, icache_line_size);
|
||||
SHOW_UINT_NAME(l2_cache_size, ecache_size);
|
||||
SHOW_UINT_NAME(l2_cache_line_size, ecache_line_size);
|
||||
SHOW_CPUDATA_ULONG_NAME(clock_tick, clock_tick);
|
||||
SHOW_CPUDATA_ULONG_NAME(udelay_val, udelay_val);
|
||||
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),
|
||||
@ -46,6 +212,8 @@ static struct sysdev_attribute cpu_core_attrs[] = {
|
||||
_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);
|
||||
@ -54,6 +222,8 @@ static void register_cpu_online(unsigned int cpu)
|
||||
|
||||
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
|
||||
@ -63,6 +233,7 @@ static void unregister_cpu_online(unsigned int 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]);
|
||||
}
|
||||
@ -92,10 +263,24 @@ 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 int __init topology_init(void)
|
||||
{
|
||||
int cpu;
|
||||
|
||||
check_mmu_stats();
|
||||
|
||||
register_cpu_notifier(&sysfs_cpu_nb);
|
||||
|
||||
for_each_possible_cpu(cpu) {
|
||||
|
||||
@ -2798,6 +2798,11 @@ struct hv_mmu_statistics {
|
||||
*/
|
||||
#define HV_FAST_MMUSTAT_INFO 0x103
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
extern unsigned long sun4v_mmustat_conf(unsigned long ra, unsigned long *orig_ra);
|
||||
extern unsigned long sun4v_mmustat_info(unsigned long *ra);
|
||||
#endif
|
||||
|
||||
/* NCS crypto services */
|
||||
|
||||
/* ncs_request() sub-function numbers */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user