~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/arm/vfp/vfpmodule.c

Version: ~ [ linux-5.2-rc1 ] ~ [ linux-5.1.2 ] ~ [ linux-5.0.16 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.43 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.119 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.176 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.179 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.139 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.67 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ 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 /*
  2  *  linux/arch/arm/vfp/vfpmodule.c
  3  *
  4  *  Copyright (C) 2004 ARM Limited.
  5  *  Written by Deep Blue Solutions Limited.
  6  *
  7  * This program is free software; you can redistribute it and/or modify
  8  * it under the terms of the GNU General Public License version 2 as
  9  * published by the Free Software Foundation.
 10  */
 11 #include <linux/module.h>
 12 #include <linux/types.h>
 13 #include <linux/cpu.h>
 14 #include <linux/kernel.h>
 15 #include <linux/notifier.h>
 16 #include <linux/signal.h>
 17 #include <linux/sched.h>
 18 #include <linux/smp.h>
 19 #include <linux/init.h>
 20 
 21 #include <asm/cputype.h>
 22 #include <asm/thread_notify.h>
 23 #include <asm/vfp.h>
 24 
 25 #include "vfpinstr.h"
 26 #include "vfp.h"
 27 
 28 /*
 29  * Our undef handlers (in entry.S)
 30  */
 31 void vfp_testing_entry(void);
 32 void vfp_support_entry(void);
 33 void vfp_null_entry(void);
 34 
 35 void (*vfp_vector)(void) = vfp_null_entry;
 36 union vfp_state *last_VFP_context[NR_CPUS];
 37 
 38 /*
 39  * Dual-use variable.
 40  * Used in startup: set to non-zero if VFP checks fail
 41  * After startup, holds VFP architecture
 42  */
 43 unsigned int VFP_arch;
 44 
 45 /*
 46  * Per-thread VFP initialization.
 47  */
 48 static void vfp_thread_flush(struct thread_info *thread)
 49 {
 50         union vfp_state *vfp = &thread->vfpstate;
 51         unsigned int cpu;
 52 
 53         memset(vfp, 0, sizeof(union vfp_state));
 54 
 55         vfp->hard.fpexc = FPEXC_EN;
 56         vfp->hard.fpscr = FPSCR_ROUND_NEAREST;
 57 
 58         /*
 59          * Disable VFP to ensure we initialize it first.  We must ensure
 60          * that the modification of last_VFP_context[] and hardware disable
 61          * are done for the same CPU and without preemption.
 62          */
 63         cpu = get_cpu();
 64         if (last_VFP_context[cpu] == vfp)
 65                 last_VFP_context[cpu] = NULL;
 66         fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_EN);
 67         put_cpu();
 68 }
 69 
 70 static void vfp_thread_exit(struct thread_info *thread)
 71 {
 72         /* release case: Per-thread VFP cleanup. */
 73         union vfp_state *vfp = &thread->vfpstate;
 74         unsigned int cpu = get_cpu();
 75 
 76         if (last_VFP_context[cpu] == vfp)
 77                 last_VFP_context[cpu] = NULL;
 78         put_cpu();
 79 }
 80 
 81 static void vfp_thread_copy(struct thread_info *thread)
 82 {
 83         struct thread_info *parent = current_thread_info();
 84 
 85         vfp_sync_hwstate(parent);
 86         thread->vfpstate = parent->vfpstate;
 87 }
 88 
 89 /*
 90  * When this function is called with the following 'cmd's, the following
 91  * is true while this function is being run:
 92  *  THREAD_NOFTIFY_SWTICH:
 93  *   - the previously running thread will not be scheduled onto another CPU.
 94  *   - the next thread to be run (v) will not be running on another CPU.
 95  *   - thread->cpu is the local CPU number
 96  *   - not preemptible as we're called in the middle of a thread switch
 97  *  THREAD_NOTIFY_FLUSH:
 98  *   - the thread (v) will be running on the local CPU, so
 99  *      v === current_thread_info()
100  *   - thread->cpu is the local CPU number at the time it is accessed,
101  *      but may change at any time.
102  *   - we could be preempted if tree preempt rcu is enabled, so
103  *      it is unsafe to use thread->cpu.
104  *  THREAD_NOTIFY_EXIT
105  *   - the thread (v) will be running on the local CPU, so
106  *      v === current_thread_info()
107  *   - thread->cpu is the local CPU number at the time it is accessed,
108  *      but may change at any time.
109  *   - we could be preempted if tree preempt rcu is enabled, so
110  *      it is unsafe to use thread->cpu.
111  */
112 static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v)
113 {
114         struct thread_info *thread = v;
115         u32 fpexc;
116 #ifdef CONFIG_SMP
117         unsigned int cpu;
118 #endif
119 
120         switch (cmd) {
121         case THREAD_NOTIFY_SWITCH:
122                 fpexc = fmrx(FPEXC);
123 
124 #ifdef CONFIG_SMP
125                 cpu = thread->cpu;
126 
127                 /*
128                  * On SMP, if VFP is enabled, save the old state in
129                  * case the thread migrates to a different CPU. The
130                  * restoring is done lazily.
131                  */
132                 if ((fpexc & FPEXC_EN) && last_VFP_context[cpu]) {
133                         vfp_save_state(last_VFP_context[cpu], fpexc);
134                         last_VFP_context[cpu]->hard.cpu = cpu;
135                 }
136                 /*
137                  * Thread migration, just force the reloading of the
138                  * state on the new CPU in case the VFP registers
139                  * contain stale data.
140                  */
141                 if (thread->vfpstate.hard.cpu != cpu)
142                         last_VFP_context[cpu] = NULL;
143 #endif
144 
145                 /*
146                  * Always disable VFP so we can lazily save/restore the
147                  * old state.
148                  */
149                 fmxr(FPEXC, fpexc & ~FPEXC_EN);
150                 break;
151 
152         case THREAD_NOTIFY_FLUSH:
153                 vfp_thread_flush(thread);
154                 break;
155 
156         case THREAD_NOTIFY_EXIT:
157                 vfp_thread_exit(thread);
158                 break;
159 
160         case THREAD_NOTIFY_COPY:
161                 vfp_thread_copy(thread);
162                 break;
163         }
164 
165         return NOTIFY_DONE;
166 }
167 
168 static struct notifier_block vfp_notifier_block = {
169         .notifier_call  = vfp_notifier,
170 };
171 
172 /*
173  * Raise a SIGFPE for the current process.
174  * sicode describes the signal being raised.
175  */
176 static void vfp_raise_sigfpe(unsigned int sicode, struct pt_regs *regs)
177 {
178         siginfo_t info;
179 
180         memset(&info, 0, sizeof(info));
181 
182         info.si_signo = SIGFPE;
183         info.si_code = sicode;
184         info.si_addr = (void __user *)(instruction_pointer(regs) - 4);
185 
186         /*
187          * This is the same as NWFPE, because it's not clear what
188          * this is used for
189          */
190         current->thread.error_code = 0;
191         current->thread.trap_no = 6;
192 
193         send_sig_info(SIGFPE, &info, current);
194 }
195 
196 static void vfp_panic(char *reason, u32 inst)
197 {
198         int i;
199 
200         printk(KERN_ERR "VFP: Error: %s\n", reason);
201         printk(KERN_ERR "VFP: EXC 0x%08x SCR 0x%08x INST 0x%08x\n",
202                 fmrx(FPEXC), fmrx(FPSCR), inst);
203         for (i = 0; i < 32; i += 2)
204                 printk(KERN_ERR "VFP: s%2u: 0x%08x s%2u: 0x%08x\n",
205                        i, vfp_get_float(i), i+1, vfp_get_float(i+1));
206 }
207 
208 /*
209  * Process bitmask of exception conditions.
210  */
211 static void vfp_raise_exceptions(u32 exceptions, u32 inst, u32 fpscr, struct pt_regs *regs)
212 {
213         int si_code = 0;
214 
215         pr_debug("VFP: raising exceptions %08x\n", exceptions);
216 
217         if (exceptions == VFP_EXCEPTION_ERROR) {
218                 vfp_panic("unhandled bounce", inst);
219                 vfp_raise_sigfpe(0, regs);
220                 return;
221         }
222 
223         /*
224          * If any of the status flags are set, update the FPSCR.
225          * Comparison instructions always return at least one of
226          * these flags set.
227          */
228         if (exceptions & (FPSCR_N|FPSCR_Z|FPSCR_C|FPSCR_V))
229                 fpscr &= ~(FPSCR_N|FPSCR_Z|FPSCR_C|FPSCR_V);
230 
231         fpscr |= exceptions;
232 
233         fmxr(FPSCR, fpscr);
234 
235 #define RAISE(stat,en,sig)                              \
236         if (exceptions & stat && fpscr & en)            \
237                 si_code = sig;
238 
239         /*
240          * These are arranged in priority order, least to highest.
241          */
242         RAISE(FPSCR_DZC, FPSCR_DZE, FPE_FLTDIV);
243         RAISE(FPSCR_IXC, FPSCR_IXE, FPE_FLTRES);
244         RAISE(FPSCR_UFC, FPSCR_UFE, FPE_FLTUND);
245         RAISE(FPSCR_OFC, FPSCR_OFE, FPE_FLTOVF);
246         RAISE(FPSCR_IOC, FPSCR_IOE, FPE_FLTINV);
247 
248         if (si_code)
249                 vfp_raise_sigfpe(si_code, regs);
250 }
251 
252 /*
253  * Emulate a VFP instruction.
254  */
255 static u32 vfp_emulate_instruction(u32 inst, u32 fpscr, struct pt_regs *regs)
256 {
257         u32 exceptions = VFP_EXCEPTION_ERROR;
258 
259         pr_debug("VFP: emulate: INST=0x%08x SCR=0x%08x\n", inst, fpscr);
260 
261         if (INST_CPRTDO(inst)) {
262                 if (!INST_CPRT(inst)) {
263                         /*
264                          * CPDO
265                          */
266                         if (vfp_single(inst)) {
267                                 exceptions = vfp_single_cpdo(inst, fpscr);
268                         } else {
269                                 exceptions = vfp_double_cpdo(inst, fpscr);
270                         }
271                 } else {
272                         /*
273                          * A CPRT instruction can not appear in FPINST2, nor
274                          * can it cause an exception.  Therefore, we do not
275                          * have to emulate it.
276                          */
277                 }
278         } else {
279                 /*
280                  * A CPDT instruction can not appear in FPINST2, nor can
281                  * it cause an exception.  Therefore, we do not have to
282                  * emulate it.
283                  */
284         }
285         return exceptions & ~VFP_NAN_FLAG;
286 }
287 
288 /*
289  * Package up a bounce condition.
290  */
291 void VFP_bounce(u32 trigger, u32 fpexc, struct pt_regs *regs)
292 {
293         u32 fpscr, orig_fpscr, fpsid, exceptions;
294 
295         pr_debug("VFP: bounce: trigger %08x fpexc %08x\n", trigger, fpexc);
296 
297         /*
298          * At this point, FPEXC can have the following configuration:
299          *
300          *  EX DEX IXE
301          *  0   1   x   - synchronous exception
302          *  1   x   0   - asynchronous exception
303          *  1   x   1   - sychronous on VFP subarch 1 and asynchronous on later
304          *  0   0   1   - synchronous on VFP9 (non-standard subarch 1
305          *                implementation), undefined otherwise
306          *
307          * Clear various bits and enable access to the VFP so we can
308          * handle the bounce.
309          */
310         fmxr(FPEXC, fpexc & ~(FPEXC_EX|FPEXC_DEX|FPEXC_FP2V|FPEXC_VV|FPEXC_TRAP_MASK));
311 
312         fpsid = fmrx(FPSID);
313         orig_fpscr = fpscr = fmrx(FPSCR);
314 
315         /*
316          * Check for the special VFP subarch 1 and FPSCR.IXE bit case
317          */
318         if ((fpsid & FPSID_ARCH_MASK) == (1 << FPSID_ARCH_BIT)
319             && (fpscr & FPSCR_IXE)) {
320                 /*
321                  * Synchronous exception, emulate the trigger instruction
322                  */
323                 goto emulate;
324         }
325 
326         if (fpexc & FPEXC_EX) {
327 #ifndef CONFIG_CPU_FEROCEON
328                 /*
329                  * Asynchronous exception. The instruction is read from FPINST
330                  * and the interrupted instruction has to be restarted.
331                  */
332                 trigger = fmrx(FPINST);
333                 regs->ARM_pc -= 4;
334 #endif
335         } else if (!(fpexc & FPEXC_DEX)) {
336                 /*
337                  * Illegal combination of bits. It can be caused by an
338                  * unallocated VFP instruction but with FPSCR.IXE set and not
339                  * on VFP subarch 1.
340                  */
341                  vfp_raise_exceptions(VFP_EXCEPTION_ERROR, trigger, fpscr, regs);
342                 goto exit;
343         }
344 
345         /*
346          * Modify fpscr to indicate the number of iterations remaining.
347          * If FPEXC.EX is 0, FPEXC.DEX is 1 and the FPEXC.VV bit indicates
348          * whether FPEXC.VECITR or FPSCR.LEN is used.
349          */
350         if (fpexc & (FPEXC_EX | FPEXC_VV)) {
351                 u32 len;
352 
353                 len = fpexc + (1 << FPEXC_LENGTH_BIT);
354 
355                 fpscr &= ~FPSCR_LENGTH_MASK;
356                 fpscr |= (len & FPEXC_LENGTH_MASK) << (FPSCR_LENGTH_BIT - FPEXC_LENGTH_BIT);
357         }
358 
359         /*
360          * Handle the first FP instruction.  We used to take note of the
361          * FPEXC bounce reason, but this appears to be unreliable.
362          * Emulate the bounced instruction instead.
363          */
364         exceptions = vfp_emulate_instruction(trigger, fpscr, regs);
365         if (exceptions)
366                 vfp_raise_exceptions(exceptions, trigger, orig_fpscr, regs);
367 
368         /*
369          * If there isn't a second FP instruction, exit now. Note that
370          * the FPEXC.FP2V bit is valid only if FPEXC.EX is 1.
371          */
372         if ((fpexc & (FPEXC_EX | FPEXC_FP2V)) != (FPEXC_EX | FPEXC_FP2V))
373                 goto exit;
374 
375         /*
376          * The barrier() here prevents fpinst2 being read
377          * before the condition above.
378          */
379         barrier();
380         trigger = fmrx(FPINST2);
381 
382  emulate:
383         exceptions = vfp_emulate_instruction(trigger, orig_fpscr, regs);
384         if (exceptions)
385                 vfp_raise_exceptions(exceptions, trigger, orig_fpscr, regs);
386  exit:
387         preempt_enable();
388 }
389 
390 static void vfp_enable(void *unused)
391 {
392         u32 access = get_copro_access();
393 
394         /*
395          * Enable full access to VFP (cp10 and cp11)
396          */
397         set_copro_access(access | CPACC_FULL(10) | CPACC_FULL(11));
398 }
399 
400 #ifdef CONFIG_PM
401 #include <linux/syscore_ops.h>
402 
403 static int vfp_pm_suspend(void)
404 {
405         struct thread_info *ti = current_thread_info();
406         u32 fpexc = fmrx(FPEXC);
407 
408         /* if vfp is on, then save state for resumption */
409         if (fpexc & FPEXC_EN) {
410                 printk(KERN_DEBUG "%s: saving vfp state\n", __func__);
411                 vfp_save_state(&ti->vfpstate, fpexc);
412 
413                 /* disable, just in case */
414                 fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_EN);
415         }
416 
417         /* clear any information we had about last context state */
418         memset(last_VFP_context, 0, sizeof(last_VFP_context));
419 
420         return 0;
421 }
422 
423 static void vfp_pm_resume(void)
424 {
425         /* ensure we have access to the vfp */
426         vfp_enable(NULL);
427 
428         /* and disable it to ensure the next usage restores the state */
429         fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_EN);
430 }
431 
432 static struct syscore_ops vfp_pm_syscore_ops = {
433         .suspend        = vfp_pm_suspend,
434         .resume         = vfp_pm_resume,
435 };
436 
437 static void vfp_pm_init(void)
438 {
439         register_syscore_ops(&vfp_pm_syscore_ops);
440 }
441 
442 #else
443 static inline void vfp_pm_init(void) { }
444 #endif /* CONFIG_PM */
445 
446 void vfp_sync_hwstate(struct thread_info *thread)
447 {
448         unsigned int cpu = get_cpu();
449 
450         /*
451          * If the thread we're interested in is the current owner of the
452          * hardware VFP state, then we need to save its state.
453          */
454         if (last_VFP_context[cpu] == &thread->vfpstate) {
455                 u32 fpexc = fmrx(FPEXC);
456 
457                 /*
458                  * Save the last VFP state on this CPU.
459                  */
460                 fmxr(FPEXC, fpexc | FPEXC_EN);
461                 vfp_save_state(&thread->vfpstate, fpexc | FPEXC_EN);
462                 fmxr(FPEXC, fpexc);
463         }
464 
465         put_cpu();
466 }
467 
468 void vfp_flush_hwstate(struct thread_info *thread)
469 {
470         unsigned int cpu = get_cpu();
471 
472         /*
473          * If the thread we're interested in is the current owner of the
474          * hardware VFP state, then we need to save its state.
475          */
476         if (last_VFP_context[cpu] == &thread->vfpstate) {
477                 u32 fpexc = fmrx(FPEXC);
478 
479                 fmxr(FPEXC, fpexc & ~FPEXC_EN);
480 
481                 /*
482                  * Set the context to NULL to force a reload the next time
483                  * the thread uses the VFP.
484                  */
485                 last_VFP_context[cpu] = NULL;
486         }
487 
488 #ifdef CONFIG_SMP
489         /*
490          * For SMP we still have to take care of the case where the thread
491          * migrates to another CPU and then back to the original CPU on which
492          * the last VFP user is still the same thread. Mark the thread VFP
493          * state as belonging to a non-existent CPU so that the saved one will
494          * be reloaded in the above case.
495          */
496         thread->vfpstate.hard.cpu = NR_CPUS;
497 #endif
498         put_cpu();
499 }
500 
501 /*
502  * VFP hardware can lose all context when a CPU goes offline.
503  * As we will be running in SMP mode with CPU hotplug, we will save the
504  * hardware state at every thread switch.  We clear our held state when
505  * a CPU has been killed, indicating that the VFP hardware doesn't contain
506  * a threads VFP state.  When a CPU starts up, we re-enable access to the
507  * VFP hardware.
508  *
509  * Both CPU_DYING and CPU_STARTING are called on the CPU which
510  * is being offlined/onlined.
511  */
512 static int vfp_hotplug(struct notifier_block *b, unsigned long action,
513         void *hcpu)
514 {
515         if (action == CPU_DYING || action == CPU_DYING_FROZEN) {
516                 unsigned int cpu = (long)hcpu;
517                 last_VFP_context[cpu] = NULL;
518         } else if (action == CPU_STARTING || action == CPU_STARTING_FROZEN)
519                 vfp_enable(NULL);
520         return NOTIFY_OK;
521 }
522 
523 /*
524  * VFP support code initialisation.
525  */
526 static int __init vfp_init(void)
527 {
528         unsigned int vfpsid;
529         unsigned int cpu_arch = cpu_architecture();
530 
531         if (cpu_arch >= CPU_ARCH_ARMv6)
532                 vfp_enable(NULL);
533 
534         /*
535          * First check that there is a VFP that we can use.
536          * The handler is already setup to just log calls, so
537          * we just need to read the VFPSID register.
538          */
539         vfp_vector = vfp_testing_entry;
540         barrier();
541         vfpsid = fmrx(FPSID);
542         barrier();
543         vfp_vector = vfp_null_entry;
544 
545         printk(KERN_INFO "VFP support v0.3: ");
546         if (VFP_arch)
547                 printk("not present\n");
548         else if (vfpsid & FPSID_NODOUBLE) {
549                 printk("no double precision support\n");
550         } else {
551                 hotcpu_notifier(vfp_hotplug, 0);
552 
553                 smp_call_function(vfp_enable, NULL, 1);
554 
555                 VFP_arch = (vfpsid & FPSID_ARCH_MASK) >> FPSID_ARCH_BIT;  /* Extract the architecture version */
556                 printk("implementor %02x architecture %d part %02x variant %x rev %x\n",
557                         (vfpsid & FPSID_IMPLEMENTER_MASK) >> FPSID_IMPLEMENTER_BIT,
558                         (vfpsid & FPSID_ARCH_MASK) >> FPSID_ARCH_BIT,
559                         (vfpsid & FPSID_PART_MASK) >> FPSID_PART_BIT,
560                         (vfpsid & FPSID_VARIANT_MASK) >> FPSID_VARIANT_BIT,
561                         (vfpsid & FPSID_REV_MASK) >> FPSID_REV_BIT);
562 
563                 vfp_vector = vfp_support_entry;
564 
565                 thread_register_notifier(&vfp_notifier_block);
566                 vfp_pm_init();
567 
568                 /*
569                  * We detected VFP, and the support code is
570                  * in place; report VFP support to userspace.
571                  */
572                 elf_hwcap |= HWCAP_VFP;
573 #ifdef CONFIG_VFPv3
574                 if (VFP_arch >= 2) {
575                         elf_hwcap |= HWCAP_VFPv3;
576 
577                         /*
578                          * Check for VFPv3 D16 and VFPv4 D16.  CPUs in
579                          * this configuration only have 16 x 64bit
580                          * registers.
581                          */
582                         if (((fmrx(MVFR0) & MVFR0_A_SIMD_MASK)) == 1)
583                                 elf_hwcap |= HWCAP_VFPv3D16; /* also v4-D16 */
584                         else
585                                 elf_hwcap |= HWCAP_VFPD32;
586                 }
587 #endif
588 #ifdef CONFIG_NEON
589                 /*
590                  * Check for the presence of the Advanced SIMD
591                  * load/store instructions, integer and single
592                  * precision floating point operations. Only check
593                  * for NEON if the hardware has the MVFR registers.
594                  */
595                 if ((read_cpuid_id() & 0x000f0000) == 0x000f0000) {
596                         if ((fmrx(MVFR1) & 0x000fff00) == 0x00011100)
597                                 elf_hwcap |= HWCAP_NEON;
598                 }
599 #endif
600         }
601         return 0;
602 }
603 
604 late_initcall(vfp_init);
605 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp