69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
#include <linux/cpumask.h>
|
|
#include <linux/debugfs.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/init.h>
|
|
#include <linux/percpu.h>
|
|
#include <linux/types.h>
|
|
#include <asm/debug.h>
|
|
#include <asm/fpu_emulator.h>
|
|
#include <asm/local.h>
|
|
|
|
DEFINE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats);
|
|
|
|
static int fpuemu_stat_get(void *data, u64 *val)
|
|
{
|
|
int cpu;
|
|
unsigned long sum = 0;
|
|
|
|
for_each_online_cpu(cpu) {
|
|
struct mips_fpu_emulator_stats *ps;
|
|
local_t *pv;
|
|
|
|
ps = &per_cpu(fpuemustats, cpu);
|
|
pv = (void *)ps + (unsigned long)data;
|
|
sum += local_read(pv);
|
|
}
|
|
*val = sum;
|
|
return 0;
|
|
}
|
|
DEFINE_SIMPLE_ATTRIBUTE(fops_fpuemu_stat, fpuemu_stat_get, NULL, "%llu\n");
|
|
|
|
static int __init debugfs_fpuemu(void)
|
|
{
|
|
struct dentry *d, *dir;
|
|
|
|
if (!mips_debugfs_dir)
|
|
return -ENODEV;
|
|
dir = debugfs_create_dir("fpuemustats", mips_debugfs_dir);
|
|
if (!dir)
|
|
return -ENOMEM;
|
|
|
|
#define FPU_EMU_STAT_OFFSET(m) \
|
|
offsetof(struct mips_fpu_emulator_stats, m)
|
|
|
|
#define FPU_STAT_CREATE(m) \
|
|
do { \
|
|
d = debugfs_create_file(#m , S_IRUGO, dir, \
|
|
(void *)FPU_EMU_STAT_OFFSET(m), \
|
|
&fops_fpuemu_stat); \
|
|
if (!d) \
|
|
return -ENOMEM; \
|
|
} while (0)
|
|
|
|
FPU_STAT_CREATE(emulated);
|
|
FPU_STAT_CREATE(loads);
|
|
FPU_STAT_CREATE(stores);
|
|
FPU_STAT_CREATE(cp1ops);
|
|
FPU_STAT_CREATE(cp1xops);
|
|
FPU_STAT_CREATE(errors);
|
|
FPU_STAT_CREATE(ieee754_inexact);
|
|
FPU_STAT_CREATE(ieee754_underflow);
|
|
FPU_STAT_CREATE(ieee754_overflow);
|
|
FPU_STAT_CREATE(ieee754_zerodiv);
|
|
FPU_STAT_CREATE(ieee754_invalidop);
|
|
FPU_STAT_CREATE(ds_emul);
|
|
|
|
return 0;
|
|
}
|
|
arch_initcall(debugfs_fpuemu);
|