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- #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);
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