| // SPDX-License-Identifier: GPL-2.0 |
| #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"); |
| |
| /* |
| * Used to obtain names for a debugfs instruction counter, given field name |
| * in fpuemustats structure. For example, for input "cmp_sueq_d", the output |
| * would be "cmp.sueq.d". This is needed since dots are not allowed to be |
| * used in structure field names, and are, on the other hand, desired to be |
| * used in debugfs item names to be clearly associated to corresponding |
| * MIPS FPU instructions. |
| */ |
| static void adjust_instruction_counter_name(char *out_name, char *in_name) |
| { |
| int i = 0; |
| |
| strcpy(out_name, in_name); |
| while (in_name[i] != '\0') { |
| if (out_name[i] == '_') |
| out_name[i] = '.'; |
| i++; |
| } |
| } |
| |
| static int fpuemustats_clear_show(struct seq_file *s, void *unused) |
| { |
| __this_cpu_write((fpuemustats).emulated, 0); |
| __this_cpu_write((fpuemustats).loads, 0); |
| __this_cpu_write((fpuemustats).stores, 0); |
| __this_cpu_write((fpuemustats).branches, 0); |
| __this_cpu_write((fpuemustats).cp1ops, 0); |
| __this_cpu_write((fpuemustats).cp1xops, 0); |
| __this_cpu_write((fpuemustats).errors, 0); |
| __this_cpu_write((fpuemustats).ieee754_inexact, 0); |
| __this_cpu_write((fpuemustats).ieee754_underflow, 0); |
| __this_cpu_write((fpuemustats).ieee754_overflow, 0); |
| __this_cpu_write((fpuemustats).ieee754_zerodiv, 0); |
| __this_cpu_write((fpuemustats).ieee754_invalidop, 0); |
| __this_cpu_write((fpuemustats).ds_emul, 0); |
| |
| __this_cpu_write((fpuemustats).abs_s, 0); |
| __this_cpu_write((fpuemustats).abs_d, 0); |
| __this_cpu_write((fpuemustats).add_s, 0); |
| __this_cpu_write((fpuemustats).add_d, 0); |
| __this_cpu_write((fpuemustats).bc1eqz, 0); |
| __this_cpu_write((fpuemustats).bc1nez, 0); |
| __this_cpu_write((fpuemustats).ceil_w_s, 0); |
| __this_cpu_write((fpuemustats).ceil_w_d, 0); |
| __this_cpu_write((fpuemustats).ceil_l_s, 0); |
| __this_cpu_write((fpuemustats).ceil_l_d, 0); |
| __this_cpu_write((fpuemustats).class_s, 0); |
| __this_cpu_write((fpuemustats).class_d, 0); |
| __this_cpu_write((fpuemustats).cmp_af_s, 0); |
| __this_cpu_write((fpuemustats).cmp_af_d, 0); |
| __this_cpu_write((fpuemustats).cmp_eq_s, 0); |
| __this_cpu_write((fpuemustats).cmp_eq_d, 0); |
| __this_cpu_write((fpuemustats).cmp_le_s, 0); |
| __this_cpu_write((fpuemustats).cmp_le_d, 0); |
| __this_cpu_write((fpuemustats).cmp_lt_s, 0); |
| __this_cpu_write((fpuemustats).cmp_lt_d, 0); |
| __this_cpu_write((fpuemustats).cmp_ne_s, 0); |
| __this_cpu_write((fpuemustats).cmp_ne_d, 0); |
| __this_cpu_write((fpuemustats).cmp_or_s, 0); |
| __this_cpu_write((fpuemustats).cmp_or_d, 0); |
| __this_cpu_write((fpuemustats).cmp_ueq_s, 0); |
| __this_cpu_write((fpuemustats).cmp_ueq_d, 0); |
| __this_cpu_write((fpuemustats).cmp_ule_s, 0); |
| __this_cpu_write((fpuemustats).cmp_ule_d, 0); |
| __this_cpu_write((fpuemustats).cmp_ult_s, 0); |
| __this_cpu_write((fpuemustats).cmp_ult_d, 0); |
| __this_cpu_write((fpuemustats).cmp_un_s, 0); |
| __this_cpu_write((fpuemustats).cmp_un_d, 0); |
| __this_cpu_write((fpuemustats).cmp_une_s, 0); |
| __this_cpu_write((fpuemustats).cmp_une_d, 0); |
| __this_cpu_write((fpuemustats).cmp_saf_s, 0); |
| __this_cpu_write((fpuemustats).cmp_saf_d, 0); |
| __this_cpu_write((fpuemustats).cmp_seq_s, 0); |
| __this_cpu_write((fpuemustats).cmp_seq_d, 0); |
| __this_cpu_write((fpuemustats).cmp_sle_s, 0); |
| __this_cpu_write((fpuemustats).cmp_sle_d, 0); |
| __this_cpu_write((fpuemustats).cmp_slt_s, 0); |
| __this_cpu_write((fpuemustats).cmp_slt_d, 0); |
| __this_cpu_write((fpuemustats).cmp_sne_s, 0); |
| __this_cpu_write((fpuemustats).cmp_sne_d, 0); |
| __this_cpu_write((fpuemustats).cmp_sor_s, 0); |
| __this_cpu_write((fpuemustats).cmp_sor_d, 0); |
| __this_cpu_write((fpuemustats).cmp_sueq_s, 0); |
| __this_cpu_write((fpuemustats).cmp_sueq_d, 0); |
| __this_cpu_write((fpuemustats).cmp_sule_s, 0); |
| __this_cpu_write((fpuemustats).cmp_sule_d, 0); |
| __this_cpu_write((fpuemustats).cmp_sult_s, 0); |
| __this_cpu_write((fpuemustats).cmp_sult_d, 0); |
| __this_cpu_write((fpuemustats).cmp_sun_s, 0); |
| __this_cpu_write((fpuemustats).cmp_sun_d, 0); |
| __this_cpu_write((fpuemustats).cmp_sune_s, 0); |
| __this_cpu_write((fpuemustats).cmp_sune_d, 0); |
| __this_cpu_write((fpuemustats).cvt_d_l, 0); |
| __this_cpu_write((fpuemustats).cvt_d_s, 0); |
| __this_cpu_write((fpuemustats).cvt_d_w, 0); |
| __this_cpu_write((fpuemustats).cvt_l_s, 0); |
| __this_cpu_write((fpuemustats).cvt_l_d, 0); |
| __this_cpu_write((fpuemustats).cvt_s_d, 0); |
| __this_cpu_write((fpuemustats).cvt_s_l, 0); |
| __this_cpu_write((fpuemustats).cvt_s_w, 0); |
| __this_cpu_write((fpuemustats).cvt_w_s, 0); |
| __this_cpu_write((fpuemustats).cvt_w_d, 0); |
| __this_cpu_write((fpuemustats).div_s, 0); |
| __this_cpu_write((fpuemustats).div_d, 0); |
| __this_cpu_write((fpuemustats).floor_w_s, 0); |
| __this_cpu_write((fpuemustats).floor_w_d, 0); |
| __this_cpu_write((fpuemustats).floor_l_s, 0); |
| __this_cpu_write((fpuemustats).floor_l_d, 0); |
| __this_cpu_write((fpuemustats).maddf_s, 0); |
| __this_cpu_write((fpuemustats).maddf_d, 0); |
| __this_cpu_write((fpuemustats).max_s, 0); |
| __this_cpu_write((fpuemustats).max_d, 0); |
| __this_cpu_write((fpuemustats).maxa_s, 0); |
| __this_cpu_write((fpuemustats).maxa_d, 0); |
| __this_cpu_write((fpuemustats).min_s, 0); |
| __this_cpu_write((fpuemustats).min_d, 0); |
| __this_cpu_write((fpuemustats).mina_s, 0); |
| __this_cpu_write((fpuemustats).mina_d, 0); |
| __this_cpu_write((fpuemustats).mov_s, 0); |
| __this_cpu_write((fpuemustats).mov_d, 0); |
| __this_cpu_write((fpuemustats).msubf_s, 0); |
| __this_cpu_write((fpuemustats).msubf_d, 0); |
| __this_cpu_write((fpuemustats).mul_s, 0); |
| __this_cpu_write((fpuemustats).mul_d, 0); |
| __this_cpu_write((fpuemustats).neg_s, 0); |
| __this_cpu_write((fpuemustats).neg_d, 0); |
| __this_cpu_write((fpuemustats).recip_s, 0); |
| __this_cpu_write((fpuemustats).recip_d, 0); |
| __this_cpu_write((fpuemustats).rint_s, 0); |
| __this_cpu_write((fpuemustats).rint_d, 0); |
| __this_cpu_write((fpuemustats).round_w_s, 0); |
| __this_cpu_write((fpuemustats).round_w_d, 0); |
| __this_cpu_write((fpuemustats).round_l_s, 0); |
| __this_cpu_write((fpuemustats).round_l_d, 0); |
| __this_cpu_write((fpuemustats).rsqrt_s, 0); |
| __this_cpu_write((fpuemustats).rsqrt_d, 0); |
| __this_cpu_write((fpuemustats).sel_s, 0); |
| __this_cpu_write((fpuemustats).sel_d, 0); |
| __this_cpu_write((fpuemustats).seleqz_s, 0); |
| __this_cpu_write((fpuemustats).seleqz_d, 0); |
| __this_cpu_write((fpuemustats).selnez_s, 0); |
| __this_cpu_write((fpuemustats).selnez_d, 0); |
| __this_cpu_write((fpuemustats).sqrt_s, 0); |
| __this_cpu_write((fpuemustats).sqrt_d, 0); |
| __this_cpu_write((fpuemustats).sub_s, 0); |
| __this_cpu_write((fpuemustats).sub_d, 0); |
| __this_cpu_write((fpuemustats).trunc_w_s, 0); |
| __this_cpu_write((fpuemustats).trunc_w_d, 0); |
| __this_cpu_write((fpuemustats).trunc_l_s, 0); |
| __this_cpu_write((fpuemustats).trunc_l_d, 0); |
| |
| return 0; |
| } |
| |
| static int fpuemustats_clear_open(struct inode *inode, struct file *file) |
| { |
| return single_open(file, fpuemustats_clear_show, inode->i_private); |
| } |
| |
| static const struct file_operations fpuemustats_clear_fops = { |
| .open = fpuemustats_clear_open, |
| .read = seq_read, |
| .llseek = seq_lseek, |
| .release = single_release, |
| }; |
| |
| static int __init debugfs_fpuemu(void) |
| { |
| struct dentry *fpuemu_debugfs_base_dir; |
| struct dentry *fpuemu_debugfs_inst_dir; |
| struct dentry *d, *reset_file; |
| |
| if (!mips_debugfs_dir) |
| return -ENODEV; |
| |
| fpuemu_debugfs_base_dir = debugfs_create_dir("fpuemustats", |
| mips_debugfs_dir); |
| if (!fpuemu_debugfs_base_dir) |
| return -ENOMEM; |
| |
| reset_file = debugfs_create_file("fpuemustats_clear", 0444, |
| mips_debugfs_dir, NULL, |
| &fpuemustats_clear_fops); |
| if (!reset_file) |
| 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, 0444, fpuemu_debugfs_base_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(branches); |
| 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); |
| |
| fpuemu_debugfs_inst_dir = debugfs_create_dir("instructions", |
| fpuemu_debugfs_base_dir); |
| if (!fpuemu_debugfs_inst_dir) |
| return -ENOMEM; |
| |
| #define FPU_STAT_CREATE_EX(m) \ |
| do { \ |
| char name[32]; \ |
| \ |
| adjust_instruction_counter_name(name, #m); \ |
| \ |
| d = debugfs_create_file(name, 0444, fpuemu_debugfs_inst_dir, \ |
| (void *)FPU_EMU_STAT_OFFSET(m), \ |
| &fops_fpuemu_stat); \ |
| if (!d) \ |
| return -ENOMEM; \ |
| } while (0) |
| |
| FPU_STAT_CREATE_EX(abs_s); |
| FPU_STAT_CREATE_EX(abs_d); |
| FPU_STAT_CREATE_EX(add_s); |
| FPU_STAT_CREATE_EX(add_d); |
| FPU_STAT_CREATE_EX(bc1eqz); |
| FPU_STAT_CREATE_EX(bc1nez); |
| FPU_STAT_CREATE_EX(ceil_w_s); |
| FPU_STAT_CREATE_EX(ceil_w_d); |
| FPU_STAT_CREATE_EX(ceil_l_s); |
| FPU_STAT_CREATE_EX(ceil_l_d); |
| FPU_STAT_CREATE_EX(class_s); |
| FPU_STAT_CREATE_EX(class_d); |
| FPU_STAT_CREATE_EX(cmp_af_s); |
| FPU_STAT_CREATE_EX(cmp_af_d); |
| FPU_STAT_CREATE_EX(cmp_eq_s); |
| FPU_STAT_CREATE_EX(cmp_eq_d); |
| FPU_STAT_CREATE_EX(cmp_le_s); |
| FPU_STAT_CREATE_EX(cmp_le_d); |
| FPU_STAT_CREATE_EX(cmp_lt_s); |
| FPU_STAT_CREATE_EX(cmp_lt_d); |
| FPU_STAT_CREATE_EX(cmp_ne_s); |
| FPU_STAT_CREATE_EX(cmp_ne_d); |
| FPU_STAT_CREATE_EX(cmp_or_s); |
| FPU_STAT_CREATE_EX(cmp_or_d); |
| FPU_STAT_CREATE_EX(cmp_ueq_s); |
| FPU_STAT_CREATE_EX(cmp_ueq_d); |
| FPU_STAT_CREATE_EX(cmp_ule_s); |
| FPU_STAT_CREATE_EX(cmp_ule_d); |
| FPU_STAT_CREATE_EX(cmp_ult_s); |
| FPU_STAT_CREATE_EX(cmp_ult_d); |
| FPU_STAT_CREATE_EX(cmp_un_s); |
| FPU_STAT_CREATE_EX(cmp_un_d); |
| FPU_STAT_CREATE_EX(cmp_une_s); |
| FPU_STAT_CREATE_EX(cmp_une_d); |
| FPU_STAT_CREATE_EX(cmp_saf_s); |
| FPU_STAT_CREATE_EX(cmp_saf_d); |
| FPU_STAT_CREATE_EX(cmp_seq_s); |
| FPU_STAT_CREATE_EX(cmp_seq_d); |
| FPU_STAT_CREATE_EX(cmp_sle_s); |
| FPU_STAT_CREATE_EX(cmp_sle_d); |
| FPU_STAT_CREATE_EX(cmp_slt_s); |
| FPU_STAT_CREATE_EX(cmp_slt_d); |
| FPU_STAT_CREATE_EX(cmp_sne_s); |
| FPU_STAT_CREATE_EX(cmp_sne_d); |
| FPU_STAT_CREATE_EX(cmp_sor_s); |
| FPU_STAT_CREATE_EX(cmp_sor_d); |
| FPU_STAT_CREATE_EX(cmp_sueq_s); |
| FPU_STAT_CREATE_EX(cmp_sueq_d); |
| FPU_STAT_CREATE_EX(cmp_sule_s); |
| FPU_STAT_CREATE_EX(cmp_sule_d); |
| FPU_STAT_CREATE_EX(cmp_sult_s); |
| FPU_STAT_CREATE_EX(cmp_sult_d); |
| FPU_STAT_CREATE_EX(cmp_sun_s); |
| FPU_STAT_CREATE_EX(cmp_sun_d); |
| FPU_STAT_CREATE_EX(cmp_sune_s); |
| FPU_STAT_CREATE_EX(cmp_sune_d); |
| FPU_STAT_CREATE_EX(cvt_d_l); |
| FPU_STAT_CREATE_EX(cvt_d_s); |
| FPU_STAT_CREATE_EX(cvt_d_w); |
| FPU_STAT_CREATE_EX(cvt_l_s); |
| FPU_STAT_CREATE_EX(cvt_l_d); |
| FPU_STAT_CREATE_EX(cvt_s_d); |
| FPU_STAT_CREATE_EX(cvt_s_l); |
| FPU_STAT_CREATE_EX(cvt_s_w); |
| FPU_STAT_CREATE_EX(cvt_w_s); |
| FPU_STAT_CREATE_EX(cvt_w_d); |
| FPU_STAT_CREATE_EX(div_s); |
| FPU_STAT_CREATE_EX(div_d); |
| FPU_STAT_CREATE_EX(floor_w_s); |
| FPU_STAT_CREATE_EX(floor_w_d); |
| FPU_STAT_CREATE_EX(floor_l_s); |
| FPU_STAT_CREATE_EX(floor_l_d); |
| FPU_STAT_CREATE_EX(maddf_s); |
| FPU_STAT_CREATE_EX(maddf_d); |
| FPU_STAT_CREATE_EX(max_s); |
| FPU_STAT_CREATE_EX(max_d); |
| FPU_STAT_CREATE_EX(maxa_s); |
| FPU_STAT_CREATE_EX(maxa_d); |
| FPU_STAT_CREATE_EX(min_s); |
| FPU_STAT_CREATE_EX(min_d); |
| FPU_STAT_CREATE_EX(mina_s); |
| FPU_STAT_CREATE_EX(mina_d); |
| FPU_STAT_CREATE_EX(mov_s); |
| FPU_STAT_CREATE_EX(mov_d); |
| FPU_STAT_CREATE_EX(msubf_s); |
| FPU_STAT_CREATE_EX(msubf_d); |
| FPU_STAT_CREATE_EX(mul_s); |
| FPU_STAT_CREATE_EX(mul_d); |
| FPU_STAT_CREATE_EX(neg_s); |
| FPU_STAT_CREATE_EX(neg_d); |
| FPU_STAT_CREATE_EX(recip_s); |
| FPU_STAT_CREATE_EX(recip_d); |
| FPU_STAT_CREATE_EX(rint_s); |
| FPU_STAT_CREATE_EX(rint_d); |
| FPU_STAT_CREATE_EX(round_w_s); |
| FPU_STAT_CREATE_EX(round_w_d); |
| FPU_STAT_CREATE_EX(round_l_s); |
| FPU_STAT_CREATE_EX(round_l_d); |
| FPU_STAT_CREATE_EX(rsqrt_s); |
| FPU_STAT_CREATE_EX(rsqrt_d); |
| FPU_STAT_CREATE_EX(sel_s); |
| FPU_STAT_CREATE_EX(sel_d); |
| FPU_STAT_CREATE_EX(seleqz_s); |
| FPU_STAT_CREATE_EX(seleqz_d); |
| FPU_STAT_CREATE_EX(selnez_s); |
| FPU_STAT_CREATE_EX(selnez_d); |
| FPU_STAT_CREATE_EX(sqrt_s); |
| FPU_STAT_CREATE_EX(sqrt_d); |
| FPU_STAT_CREATE_EX(sub_s); |
| FPU_STAT_CREATE_EX(sub_d); |
| FPU_STAT_CREATE_EX(trunc_w_s); |
| FPU_STAT_CREATE_EX(trunc_w_d); |
| FPU_STAT_CREATE_EX(trunc_l_s); |
| FPU_STAT_CREATE_EX(trunc_l_d); |
| |
| return 0; |
| } |
| arch_initcall(debugfs_fpuemu); |