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TOMOYO Linux Cross Reference
Linux/arch/mips/math-emu/me-debugfs.c

Version: ~ [ linux-5.12 ] ~ [ linux-5.11.16 ] ~ [ linux-5.10.32 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.114 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.188 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.231 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.267 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.267 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 // SPDX-License-Identifier: GPL-2.0
  2 #include <linux/cpumask.h>
  3 #include <linux/debugfs.h>
  4 #include <linux/fs.h>
  5 #include <linux/init.h>
  6 #include <linux/percpu.h>
  7 #include <linux/types.h>
  8 #include <asm/debug.h>
  9 #include <asm/fpu_emulator.h>
 10 #include <asm/local.h>
 11 
 12 DEFINE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats);
 13 
 14 static int fpuemu_stat_get(void *data, u64 *val)
 15 {
 16         int cpu;
 17         unsigned long sum = 0;
 18 
 19         for_each_online_cpu(cpu) {
 20                 struct mips_fpu_emulator_stats *ps;
 21                 local_t *pv;
 22 
 23                 ps = &per_cpu(fpuemustats, cpu);
 24                 pv = (void *)ps + (unsigned long)data;
 25                 sum += local_read(pv);
 26         }
 27         *val = sum;
 28         return 0;
 29 }
 30 DEFINE_SIMPLE_ATTRIBUTE(fops_fpuemu_stat, fpuemu_stat_get, NULL, "%llu\n");
 31 
 32 /*
 33  * Used to obtain names for a debugfs instruction counter, given field name
 34  * in fpuemustats structure. For example, for input "cmp_sueq_d", the output
 35  * would be "cmp.sueq.d". This is needed since dots are not allowed to be
 36  * used in structure field names, and are, on the other hand, desired to be
 37  * used in debugfs item names to be clearly associated to corresponding
 38  * MIPS FPU instructions.
 39  */
 40 static void adjust_instruction_counter_name(char *out_name, char *in_name)
 41 {
 42         int i = 0;
 43 
 44         strcpy(out_name, in_name);
 45         while (in_name[i] != '\0') {
 46                 if (out_name[i] == '_')
 47                         out_name[i] = '.';
 48                 i++;
 49         }
 50 }
 51 
 52 static int fpuemustats_clear_show(struct seq_file *s, void *unused)
 53 {
 54         __this_cpu_write((fpuemustats).emulated, 0);
 55         __this_cpu_write((fpuemustats).loads, 0);
 56         __this_cpu_write((fpuemustats).stores, 0);
 57         __this_cpu_write((fpuemustats).branches, 0);
 58         __this_cpu_write((fpuemustats).cp1ops, 0);
 59         __this_cpu_write((fpuemustats).cp1xops, 0);
 60         __this_cpu_write((fpuemustats).errors, 0);
 61         __this_cpu_write((fpuemustats).ieee754_inexact, 0);
 62         __this_cpu_write((fpuemustats).ieee754_underflow, 0);
 63         __this_cpu_write((fpuemustats).ieee754_overflow, 0);
 64         __this_cpu_write((fpuemustats).ieee754_zerodiv, 0);
 65         __this_cpu_write((fpuemustats).ieee754_invalidop, 0);
 66         __this_cpu_write((fpuemustats).ds_emul, 0);
 67 
 68         __this_cpu_write((fpuemustats).abs_s, 0);
 69         __this_cpu_write((fpuemustats).abs_d, 0);
 70         __this_cpu_write((fpuemustats).add_s, 0);
 71         __this_cpu_write((fpuemustats).add_d, 0);
 72         __this_cpu_write((fpuemustats).bc1eqz, 0);
 73         __this_cpu_write((fpuemustats).bc1nez, 0);
 74         __this_cpu_write((fpuemustats).ceil_w_s, 0);
 75         __this_cpu_write((fpuemustats).ceil_w_d, 0);
 76         __this_cpu_write((fpuemustats).ceil_l_s, 0);
 77         __this_cpu_write((fpuemustats).ceil_l_d, 0);
 78         __this_cpu_write((fpuemustats).class_s, 0);
 79         __this_cpu_write((fpuemustats).class_d, 0);
 80         __this_cpu_write((fpuemustats).cmp_af_s, 0);
 81         __this_cpu_write((fpuemustats).cmp_af_d, 0);
 82         __this_cpu_write((fpuemustats).cmp_eq_s, 0);
 83         __this_cpu_write((fpuemustats).cmp_eq_d, 0);
 84         __this_cpu_write((fpuemustats).cmp_le_s, 0);
 85         __this_cpu_write((fpuemustats).cmp_le_d, 0);
 86         __this_cpu_write((fpuemustats).cmp_lt_s, 0);
 87         __this_cpu_write((fpuemustats).cmp_lt_d, 0);
 88         __this_cpu_write((fpuemustats).cmp_ne_s, 0);
 89         __this_cpu_write((fpuemustats).cmp_ne_d, 0);
 90         __this_cpu_write((fpuemustats).cmp_or_s, 0);
 91         __this_cpu_write((fpuemustats).cmp_or_d, 0);
 92         __this_cpu_write((fpuemustats).cmp_ueq_s, 0);
 93         __this_cpu_write((fpuemustats).cmp_ueq_d, 0);
 94         __this_cpu_write((fpuemustats).cmp_ule_s, 0);
 95         __this_cpu_write((fpuemustats).cmp_ule_d, 0);
 96         __this_cpu_write((fpuemustats).cmp_ult_s, 0);
 97         __this_cpu_write((fpuemustats).cmp_ult_d, 0);
 98         __this_cpu_write((fpuemustats).cmp_un_s, 0);
 99         __this_cpu_write((fpuemustats).cmp_un_d, 0);
100         __this_cpu_write((fpuemustats).cmp_une_s, 0);
101         __this_cpu_write((fpuemustats).cmp_une_d, 0);
102         __this_cpu_write((fpuemustats).cmp_saf_s, 0);
103         __this_cpu_write((fpuemustats).cmp_saf_d, 0);
104         __this_cpu_write((fpuemustats).cmp_seq_s, 0);
105         __this_cpu_write((fpuemustats).cmp_seq_d, 0);
106         __this_cpu_write((fpuemustats).cmp_sle_s, 0);
107         __this_cpu_write((fpuemustats).cmp_sle_d, 0);
108         __this_cpu_write((fpuemustats).cmp_slt_s, 0);
109         __this_cpu_write((fpuemustats).cmp_slt_d, 0);
110         __this_cpu_write((fpuemustats).cmp_sne_s, 0);
111         __this_cpu_write((fpuemustats).cmp_sne_d, 0);
112         __this_cpu_write((fpuemustats).cmp_sor_s, 0);
113         __this_cpu_write((fpuemustats).cmp_sor_d, 0);
114         __this_cpu_write((fpuemustats).cmp_sueq_s, 0);
115         __this_cpu_write((fpuemustats).cmp_sueq_d, 0);
116         __this_cpu_write((fpuemustats).cmp_sule_s, 0);
117         __this_cpu_write((fpuemustats).cmp_sule_d, 0);
118         __this_cpu_write((fpuemustats).cmp_sult_s, 0);
119         __this_cpu_write((fpuemustats).cmp_sult_d, 0);
120         __this_cpu_write((fpuemustats).cmp_sun_s, 0);
121         __this_cpu_write((fpuemustats).cmp_sun_d, 0);
122         __this_cpu_write((fpuemustats).cmp_sune_s, 0);
123         __this_cpu_write((fpuemustats).cmp_sune_d, 0);
124         __this_cpu_write((fpuemustats).cvt_d_l, 0);
125         __this_cpu_write((fpuemustats).cvt_d_s, 0);
126         __this_cpu_write((fpuemustats).cvt_d_w, 0);
127         __this_cpu_write((fpuemustats).cvt_l_s, 0);
128         __this_cpu_write((fpuemustats).cvt_l_d, 0);
129         __this_cpu_write((fpuemustats).cvt_s_d, 0);
130         __this_cpu_write((fpuemustats).cvt_s_l, 0);
131         __this_cpu_write((fpuemustats).cvt_s_w, 0);
132         __this_cpu_write((fpuemustats).cvt_w_s, 0);
133         __this_cpu_write((fpuemustats).cvt_w_d, 0);
134         __this_cpu_write((fpuemustats).div_s, 0);
135         __this_cpu_write((fpuemustats).div_d, 0);
136         __this_cpu_write((fpuemustats).floor_w_s, 0);
137         __this_cpu_write((fpuemustats).floor_w_d, 0);
138         __this_cpu_write((fpuemustats).floor_l_s, 0);
139         __this_cpu_write((fpuemustats).floor_l_d, 0);
140         __this_cpu_write((fpuemustats).maddf_s, 0);
141         __this_cpu_write((fpuemustats).maddf_d, 0);
142         __this_cpu_write((fpuemustats).max_s, 0);
143         __this_cpu_write((fpuemustats).max_d, 0);
144         __this_cpu_write((fpuemustats).maxa_s, 0);
145         __this_cpu_write((fpuemustats).maxa_d, 0);
146         __this_cpu_write((fpuemustats).min_s, 0);
147         __this_cpu_write((fpuemustats).min_d, 0);
148         __this_cpu_write((fpuemustats).mina_s, 0);
149         __this_cpu_write((fpuemustats).mina_d, 0);
150         __this_cpu_write((fpuemustats).mov_s, 0);
151         __this_cpu_write((fpuemustats).mov_d, 0);
152         __this_cpu_write((fpuemustats).msubf_s, 0);
153         __this_cpu_write((fpuemustats).msubf_d, 0);
154         __this_cpu_write((fpuemustats).mul_s, 0);
155         __this_cpu_write((fpuemustats).mul_d, 0);
156         __this_cpu_write((fpuemustats).neg_s, 0);
157         __this_cpu_write((fpuemustats).neg_d, 0);
158         __this_cpu_write((fpuemustats).recip_s, 0);
159         __this_cpu_write((fpuemustats).recip_d, 0);
160         __this_cpu_write((fpuemustats).rint_s, 0);
161         __this_cpu_write((fpuemustats).rint_d, 0);
162         __this_cpu_write((fpuemustats).round_w_s, 0);
163         __this_cpu_write((fpuemustats).round_w_d, 0);
164         __this_cpu_write((fpuemustats).round_l_s, 0);
165         __this_cpu_write((fpuemustats).round_l_d, 0);
166         __this_cpu_write((fpuemustats).rsqrt_s, 0);
167         __this_cpu_write((fpuemustats).rsqrt_d, 0);
168         __this_cpu_write((fpuemustats).sel_s, 0);
169         __this_cpu_write((fpuemustats).sel_d, 0);
170         __this_cpu_write((fpuemustats).seleqz_s, 0);
171         __this_cpu_write((fpuemustats).seleqz_d, 0);
172         __this_cpu_write((fpuemustats).selnez_s, 0);
173         __this_cpu_write((fpuemustats).selnez_d, 0);
174         __this_cpu_write((fpuemustats).sqrt_s, 0);
175         __this_cpu_write((fpuemustats).sqrt_d, 0);
176         __this_cpu_write((fpuemustats).sub_s, 0);
177         __this_cpu_write((fpuemustats).sub_d, 0);
178         __this_cpu_write((fpuemustats).trunc_w_s, 0);
179         __this_cpu_write((fpuemustats).trunc_w_d, 0);
180         __this_cpu_write((fpuemustats).trunc_l_s, 0);
181         __this_cpu_write((fpuemustats).trunc_l_d, 0);
182 
183         return 0;
184 }
185 
186 static int fpuemustats_clear_open(struct inode *inode, struct file *file)
187 {
188         return single_open(file, fpuemustats_clear_show, inode->i_private);
189 }
190 
191 static const struct file_operations fpuemustats_clear_fops = {
192         .open                   = fpuemustats_clear_open,
193         .read                   = seq_read,
194         .llseek                 = seq_lseek,
195         .release                = single_release,
196 };
197 
198 static int __init debugfs_fpuemu(void)
199 {
200         struct dentry *fpuemu_debugfs_base_dir;
201         struct dentry *fpuemu_debugfs_inst_dir;
202         struct dentry *d, *reset_file;
203 
204         if (!mips_debugfs_dir)
205                 return -ENODEV;
206 
207         fpuemu_debugfs_base_dir = debugfs_create_dir("fpuemustats",
208                                                      mips_debugfs_dir);
209         if (!fpuemu_debugfs_base_dir)
210                 return -ENOMEM;
211 
212         reset_file = debugfs_create_file("fpuemustats_clear", 0444,
213                                          mips_debugfs_dir, NULL,
214                                          &fpuemustats_clear_fops);
215         if (!reset_file)
216                 return -ENOMEM;
217 
218 #define FPU_EMU_STAT_OFFSET(m)                                          \
219         offsetof(struct mips_fpu_emulator_stats, m)
220 
221 #define FPU_STAT_CREATE(m)                                              \
222 do {                                                                    \
223         d = debugfs_create_file(#m, 0444, fpuemu_debugfs_base_dir,      \
224                                 (void *)FPU_EMU_STAT_OFFSET(m),         \
225                                 &fops_fpuemu_stat);                     \
226         if (!d)                                                         \
227                 return -ENOMEM;                                         \
228 } while (0)
229 
230         FPU_STAT_CREATE(emulated);
231         FPU_STAT_CREATE(loads);
232         FPU_STAT_CREATE(stores);
233         FPU_STAT_CREATE(branches);
234         FPU_STAT_CREATE(cp1ops);
235         FPU_STAT_CREATE(cp1xops);
236         FPU_STAT_CREATE(errors);
237         FPU_STAT_CREATE(ieee754_inexact);
238         FPU_STAT_CREATE(ieee754_underflow);
239         FPU_STAT_CREATE(ieee754_overflow);
240         FPU_STAT_CREATE(ieee754_zerodiv);
241         FPU_STAT_CREATE(ieee754_invalidop);
242         FPU_STAT_CREATE(ds_emul);
243 
244         fpuemu_debugfs_inst_dir = debugfs_create_dir("instructions",
245                                                      fpuemu_debugfs_base_dir);
246         if (!fpuemu_debugfs_inst_dir)
247                 return -ENOMEM;
248 
249 #define FPU_STAT_CREATE_EX(m)                                           \
250 do {                                                                    \
251         char name[32];                                                  \
252                                                                         \
253         adjust_instruction_counter_name(name, #m);                      \
254                                                                         \
255         d = debugfs_create_file(name, 0444, fpuemu_debugfs_inst_dir,    \
256                                 (void *)FPU_EMU_STAT_OFFSET(m),         \
257                                 &fops_fpuemu_stat);                     \
258         if (!d)                                                         \
259                 return -ENOMEM;                                         \
260 } while (0)
261 
262         FPU_STAT_CREATE_EX(abs_s);
263         FPU_STAT_CREATE_EX(abs_d);
264         FPU_STAT_CREATE_EX(add_s);
265         FPU_STAT_CREATE_EX(add_d);
266         FPU_STAT_CREATE_EX(bc1eqz);
267         FPU_STAT_CREATE_EX(bc1nez);
268         FPU_STAT_CREATE_EX(ceil_w_s);
269         FPU_STAT_CREATE_EX(ceil_w_d);
270         FPU_STAT_CREATE_EX(ceil_l_s);
271         FPU_STAT_CREATE_EX(ceil_l_d);
272         FPU_STAT_CREATE_EX(class_s);
273         FPU_STAT_CREATE_EX(class_d);
274         FPU_STAT_CREATE_EX(cmp_af_s);
275         FPU_STAT_CREATE_EX(cmp_af_d);
276         FPU_STAT_CREATE_EX(cmp_eq_s);
277         FPU_STAT_CREATE_EX(cmp_eq_d);
278         FPU_STAT_CREATE_EX(cmp_le_s);
279         FPU_STAT_CREATE_EX(cmp_le_d);
280         FPU_STAT_CREATE_EX(cmp_lt_s);
281         FPU_STAT_CREATE_EX(cmp_lt_d);
282         FPU_STAT_CREATE_EX(cmp_ne_s);
283         FPU_STAT_CREATE_EX(cmp_ne_d);
284         FPU_STAT_CREATE_EX(cmp_or_s);
285         FPU_STAT_CREATE_EX(cmp_or_d);
286         FPU_STAT_CREATE_EX(cmp_ueq_s);
287         FPU_STAT_CREATE_EX(cmp_ueq_d);
288         FPU_STAT_CREATE_EX(cmp_ule_s);
289         FPU_STAT_CREATE_EX(cmp_ule_d);
290         FPU_STAT_CREATE_EX(cmp_ult_s);
291         FPU_STAT_CREATE_EX(cmp_ult_d);
292         FPU_STAT_CREATE_EX(cmp_un_s);
293         FPU_STAT_CREATE_EX(cmp_un_d);
294         FPU_STAT_CREATE_EX(cmp_une_s);
295         FPU_STAT_CREATE_EX(cmp_une_d);
296         FPU_STAT_CREATE_EX(cmp_saf_s);
297         FPU_STAT_CREATE_EX(cmp_saf_d);
298         FPU_STAT_CREATE_EX(cmp_seq_s);
299         FPU_STAT_CREATE_EX(cmp_seq_d);
300         FPU_STAT_CREATE_EX(cmp_sle_s);
301         FPU_STAT_CREATE_EX(cmp_sle_d);
302         FPU_STAT_CREATE_EX(cmp_slt_s);
303         FPU_STAT_CREATE_EX(cmp_slt_d);
304         FPU_STAT_CREATE_EX(cmp_sne_s);
305         FPU_STAT_CREATE_EX(cmp_sne_d);
306         FPU_STAT_CREATE_EX(cmp_sor_s);
307         FPU_STAT_CREATE_EX(cmp_sor_d);
308         FPU_STAT_CREATE_EX(cmp_sueq_s);
309         FPU_STAT_CREATE_EX(cmp_sueq_d);
310         FPU_STAT_CREATE_EX(cmp_sule_s);
311         FPU_STAT_CREATE_EX(cmp_sule_d);
312         FPU_STAT_CREATE_EX(cmp_sult_s);
313         FPU_STAT_CREATE_EX(cmp_sult_d);
314         FPU_STAT_CREATE_EX(cmp_sun_s);
315         FPU_STAT_CREATE_EX(cmp_sun_d);
316         FPU_STAT_CREATE_EX(cmp_sune_s);
317         FPU_STAT_CREATE_EX(cmp_sune_d);
318         FPU_STAT_CREATE_EX(cvt_d_l);
319         FPU_STAT_CREATE_EX(cvt_d_s);
320         FPU_STAT_CREATE_EX(cvt_d_w);
321         FPU_STAT_CREATE_EX(cvt_l_s);
322         FPU_STAT_CREATE_EX(cvt_l_d);
323         FPU_STAT_CREATE_EX(cvt_s_d);
324         FPU_STAT_CREATE_EX(cvt_s_l);
325         FPU_STAT_CREATE_EX(cvt_s_w);
326         FPU_STAT_CREATE_EX(cvt_w_s);
327         FPU_STAT_CREATE_EX(cvt_w_d);
328         FPU_STAT_CREATE_EX(div_s);
329         FPU_STAT_CREATE_EX(div_d);
330         FPU_STAT_CREATE_EX(floor_w_s);
331         FPU_STAT_CREATE_EX(floor_w_d);
332         FPU_STAT_CREATE_EX(floor_l_s);
333         FPU_STAT_CREATE_EX(floor_l_d);
334         FPU_STAT_CREATE_EX(maddf_s);
335         FPU_STAT_CREATE_EX(maddf_d);
336         FPU_STAT_CREATE_EX(max_s);
337         FPU_STAT_CREATE_EX(max_d);
338         FPU_STAT_CREATE_EX(maxa_s);
339         FPU_STAT_CREATE_EX(maxa_d);
340         FPU_STAT_CREATE_EX(min_s);
341         FPU_STAT_CREATE_EX(min_d);
342         FPU_STAT_CREATE_EX(mina_s);
343         FPU_STAT_CREATE_EX(mina_d);
344         FPU_STAT_CREATE_EX(mov_s);
345         FPU_STAT_CREATE_EX(mov_d);
346         FPU_STAT_CREATE_EX(msubf_s);
347         FPU_STAT_CREATE_EX(msubf_d);
348         FPU_STAT_CREATE_EX(mul_s);
349         FPU_STAT_CREATE_EX(mul_d);
350         FPU_STAT_CREATE_EX(neg_s);
351         FPU_STAT_CREATE_EX(neg_d);
352         FPU_STAT_CREATE_EX(recip_s);
353         FPU_STAT_CREATE_EX(recip_d);
354         FPU_STAT_CREATE_EX(rint_s);
355         FPU_STAT_CREATE_EX(rint_d);
356         FPU_STAT_CREATE_EX(round_w_s);
357         FPU_STAT_CREATE_EX(round_w_d);
358         FPU_STAT_CREATE_EX(round_l_s);
359         FPU_STAT_CREATE_EX(round_l_d);
360         FPU_STAT_CREATE_EX(rsqrt_s);
361         FPU_STAT_CREATE_EX(rsqrt_d);
362         FPU_STAT_CREATE_EX(sel_s);
363         FPU_STAT_CREATE_EX(sel_d);
364         FPU_STAT_CREATE_EX(seleqz_s);
365         FPU_STAT_CREATE_EX(seleqz_d);
366         FPU_STAT_CREATE_EX(selnez_s);
367         FPU_STAT_CREATE_EX(selnez_d);
368         FPU_STAT_CREATE_EX(sqrt_s);
369         FPU_STAT_CREATE_EX(sqrt_d);
370         FPU_STAT_CREATE_EX(sub_s);
371         FPU_STAT_CREATE_EX(sub_d);
372         FPU_STAT_CREATE_EX(trunc_w_s);
373         FPU_STAT_CREATE_EX(trunc_w_d);
374         FPU_STAT_CREATE_EX(trunc_l_s);
375         FPU_STAT_CREATE_EX(trunc_l_d);
376 
377         return 0;
378 }
379 arch_initcall(debugfs_fpuemu);
380 

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