1#include <linux/cpumask.h>
2#include <linux/debugfs.h>
3#include <linux/fs.h>
4#include <linux/init.h>
5#include <linux/percpu.h>
6#include <linux/types.h>
7#include <asm/fpu_emulator.h>
8#include <asm/local.h>
9
10DEFINE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats);
11
12static int fpuemu_stat_get(void *data, u64 *val)
13{
14	int cpu;
15	unsigned long sum = 0;
16
17	for_each_online_cpu(cpu) {
18		struct mips_fpu_emulator_stats *ps;
19		local_t *pv;
20
21		ps = &per_cpu(fpuemustats, cpu);
22		pv = (void *)ps + (unsigned long)data;
23		sum += local_read(pv);
24	}
25	*val = sum;
26	return 0;
27}
28DEFINE_SIMPLE_ATTRIBUTE(fops_fpuemu_stat, fpuemu_stat_get, NULL, "%llu\n");
29
30extern struct dentry *mips_debugfs_dir;
31static int __init debugfs_fpuemu(void)
32{
33	struct dentry *d, *dir;
34
35	if (!mips_debugfs_dir)
36		return -ENODEV;
37	dir = debugfs_create_dir("fpuemustats", mips_debugfs_dir);
38	if (!dir)
39		return -ENOMEM;
40
41#define FPU_EMU_STAT_OFFSET(m)						\
42	offsetof(struct mips_fpu_emulator_stats, m)
43
44#define FPU_STAT_CREATE(m)						\
45do {									\
46	d = debugfs_create_file(#m , S_IRUGO, dir,			\
47				(void *)FPU_EMU_STAT_OFFSET(m),		\
48				&fops_fpuemu_stat);			\
49	if (!d)								\
50		return -ENOMEM;						\
51} while (0)
52
53	FPU_STAT_CREATE(emulated);
54	FPU_STAT_CREATE(loads);
55	FPU_STAT_CREATE(stores);
56	FPU_STAT_CREATE(cp1ops);
57	FPU_STAT_CREATE(cp1xops);
58	FPU_STAT_CREATE(errors);
59	FPU_STAT_CREATE(ieee754_inexact);
60	FPU_STAT_CREATE(ieee754_underflow);
61	FPU_STAT_CREATE(ieee754_overflow);
62	FPU_STAT_CREATE(ieee754_zerodiv);
63	FPU_STAT_CREATE(ieee754_invalidop);
64	FPU_STAT_CREATE(ds_emul);
65
66	return 0;
67}
68__initcall(debugfs_fpuemu);
69