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Diffstat (limited to 'kernel/trace/trace_syscalls.c')
-rw-r--r--kernel/trace/trace_syscalls.c72
1 files changed, 36 insertions, 36 deletions
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
index 7e6e84fb7b6c..33c2a5b769dc 100644
--- a/kernel/trace/trace_syscalls.c
+++ b/kernel/trace/trace_syscalls.c
@@ -428,12 +428,12 @@ core_initcall(init_ftrace_syscalls);
428 428
429#ifdef CONFIG_PERF_EVENTS 429#ifdef CONFIG_PERF_EVENTS
430 430
431static DECLARE_BITMAP(enabled_prof_enter_syscalls, NR_syscalls); 431static DECLARE_BITMAP(enabled_perf_enter_syscalls, NR_syscalls);
432static DECLARE_BITMAP(enabled_prof_exit_syscalls, NR_syscalls); 432static DECLARE_BITMAP(enabled_perf_exit_syscalls, NR_syscalls);
433static int sys_prof_refcount_enter; 433static int sys_perf_refcount_enter;
434static int sys_prof_refcount_exit; 434static int sys_perf_refcount_exit;
435 435
436static void prof_syscall_enter(struct pt_regs *regs, long id) 436static void perf_syscall_enter(struct pt_regs *regs, long id)
437{ 437{
438 struct syscall_metadata *sys_data; 438 struct syscall_metadata *sys_data;
439 struct syscall_trace_enter *rec; 439 struct syscall_trace_enter *rec;
@@ -443,7 +443,7 @@ static void prof_syscall_enter(struct pt_regs *regs, long id)
443 int size; 443 int size;
444 444
445 syscall_nr = syscall_get_nr(current, regs); 445 syscall_nr = syscall_get_nr(current, regs);
446 if (!test_bit(syscall_nr, enabled_prof_enter_syscalls)) 446 if (!test_bit(syscall_nr, enabled_perf_enter_syscalls))
447 return; 447 return;
448 448
449 sys_data = syscall_nr_to_meta(syscall_nr); 449 sys_data = syscall_nr_to_meta(syscall_nr);
@@ -455,11 +455,11 @@ static void prof_syscall_enter(struct pt_regs *regs, long id)
455 size = ALIGN(size + sizeof(u32), sizeof(u64)); 455 size = ALIGN(size + sizeof(u32), sizeof(u64));
456 size -= sizeof(u32); 456 size -= sizeof(u32);
457 457
458 if (WARN_ONCE(size > FTRACE_MAX_PROFILE_SIZE, 458 if (WARN_ONCE(size > PERF_MAX_TRACE_SIZE,
459 "profile buffer not large enough")) 459 "perf buffer not large enough"))
460 return; 460 return;
461 461
462 rec = (struct syscall_trace_enter *)ftrace_perf_buf_prepare(size, 462 rec = (struct syscall_trace_enter *)perf_trace_buf_prepare(size,
463 sys_data->enter_event->id, &rctx, &flags); 463 sys_data->enter_event->id, &rctx, &flags);
464 if (!rec) 464 if (!rec)
465 return; 465 return;
@@ -467,10 +467,10 @@ static void prof_syscall_enter(struct pt_regs *regs, long id)
467 rec->nr = syscall_nr; 467 rec->nr = syscall_nr;
468 syscall_get_arguments(current, regs, 0, sys_data->nb_args, 468 syscall_get_arguments(current, regs, 0, sys_data->nb_args,
469 (unsigned long *)&rec->args); 469 (unsigned long *)&rec->args);
470 ftrace_perf_buf_submit(rec, size, rctx, 0, 1, flags, regs); 470 perf_trace_buf_submit(rec, size, rctx, 0, 1, flags, regs);
471} 471}
472 472
473int prof_sysenter_enable(struct ftrace_event_call *call) 473int perf_sysenter_enable(struct ftrace_event_call *call)
474{ 474{
475 int ret = 0; 475 int ret = 0;
476 int num; 476 int num;
@@ -478,34 +478,34 @@ int prof_sysenter_enable(struct ftrace_event_call *call)
478 num = ((struct syscall_metadata *)call->data)->syscall_nr; 478 num = ((struct syscall_metadata *)call->data)->syscall_nr;
479 479
480 mutex_lock(&syscall_trace_lock); 480 mutex_lock(&syscall_trace_lock);
481 if (!sys_prof_refcount_enter) 481 if (!sys_perf_refcount_enter)
482 ret = register_trace_sys_enter(prof_syscall_enter); 482 ret = register_trace_sys_enter(perf_syscall_enter);
483 if (ret) { 483 if (ret) {
484 pr_info("event trace: Could not activate" 484 pr_info("event trace: Could not activate"
485 "syscall entry trace point"); 485 "syscall entry trace point");
486 } else { 486 } else {
487 set_bit(num, enabled_prof_enter_syscalls); 487 set_bit(num, enabled_perf_enter_syscalls);
488 sys_prof_refcount_enter++; 488 sys_perf_refcount_enter++;
489 } 489 }
490 mutex_unlock(&syscall_trace_lock); 490 mutex_unlock(&syscall_trace_lock);
491 return ret; 491 return ret;
492} 492}
493 493
494void prof_sysenter_disable(struct ftrace_event_call *call) 494void perf_sysenter_disable(struct ftrace_event_call *call)
495{ 495{
496 int num; 496 int num;
497 497
498 num = ((struct syscall_metadata *)call->data)->syscall_nr; 498 num = ((struct syscall_metadata *)call->data)->syscall_nr;
499 499
500 mutex_lock(&syscall_trace_lock); 500 mutex_lock(&syscall_trace_lock);
501 sys_prof_refcount_enter--; 501 sys_perf_refcount_enter--;
502 clear_bit(num, enabled_prof_enter_syscalls); 502 clear_bit(num, enabled_perf_enter_syscalls);
503 if (!sys_prof_refcount_enter) 503 if (!sys_perf_refcount_enter)
504 unregister_trace_sys_enter(prof_syscall_enter); 504 unregister_trace_sys_enter(perf_syscall_enter);
505 mutex_unlock(&syscall_trace_lock); 505 mutex_unlock(&syscall_trace_lock);
506} 506}
507 507
508static void prof_syscall_exit(struct pt_regs *regs, long ret) 508static void perf_syscall_exit(struct pt_regs *regs, long ret)
509{ 509{
510 struct syscall_metadata *sys_data; 510 struct syscall_metadata *sys_data;
511 struct syscall_trace_exit *rec; 511 struct syscall_trace_exit *rec;
@@ -515,7 +515,7 @@ static void prof_syscall_exit(struct pt_regs *regs, long ret)
515 int size; 515 int size;
516 516
517 syscall_nr = syscall_get_nr(current, regs); 517 syscall_nr = syscall_get_nr(current, regs);
518 if (!test_bit(syscall_nr, enabled_prof_exit_syscalls)) 518 if (!test_bit(syscall_nr, enabled_perf_exit_syscalls))
519 return; 519 return;
520 520
521 sys_data = syscall_nr_to_meta(syscall_nr); 521 sys_data = syscall_nr_to_meta(syscall_nr);
@@ -530,11 +530,11 @@ static void prof_syscall_exit(struct pt_regs *regs, long ret)
530 * Impossible, but be paranoid with the future 530 * Impossible, but be paranoid with the future
531 * How to put this check outside runtime? 531 * How to put this check outside runtime?
532 */ 532 */
533 if (WARN_ONCE(size > FTRACE_MAX_PROFILE_SIZE, 533 if (WARN_ONCE(size > PERF_MAX_TRACE_SIZE,
534 "exit event has grown above profile buffer size")) 534 "exit event has grown above perf buffer size"))
535 return; 535 return;
536 536
537 rec = (struct syscall_trace_exit *)ftrace_perf_buf_prepare(size, 537 rec = (struct syscall_trace_exit *)perf_trace_buf_prepare(size,
538 sys_data->exit_event->id, &rctx, &flags); 538 sys_data->exit_event->id, &rctx, &flags);
539 if (!rec) 539 if (!rec)
540 return; 540 return;
@@ -542,10 +542,10 @@ static void prof_syscall_exit(struct pt_regs *regs, long ret)
542 rec->nr = syscall_nr; 542 rec->nr = syscall_nr;
543 rec->ret = syscall_get_return_value(current, regs); 543 rec->ret = syscall_get_return_value(current, regs);
544 544
545 ftrace_perf_buf_submit(rec, size, rctx, 0, 1, flags, regs); 545 perf_trace_buf_submit(rec, size, rctx, 0, 1, flags, regs);
546} 546}
547 547
548int prof_sysexit_enable(struct ftrace_event_call *call) 548int perf_sysexit_enable(struct ftrace_event_call *call)
549{ 549{
550 int ret = 0; 550 int ret = 0;
551 int num; 551 int num;
@@ -553,30 +553,30 @@ int prof_sysexit_enable(struct ftrace_event_call *call)
553 num = ((struct syscall_metadata *)call->data)->syscall_nr; 553 num = ((struct syscall_metadata *)call->data)->syscall_nr;
554 554
555 mutex_lock(&syscall_trace_lock); 555 mutex_lock(&syscall_trace_lock);
556 if (!sys_prof_refcount_exit) 556 if (!sys_perf_refcount_exit)
557 ret = register_trace_sys_exit(prof_syscall_exit); 557 ret = register_trace_sys_exit(perf_syscall_exit);
558 if (ret) { 558 if (ret) {
559 pr_info("event trace: Could not activate" 559 pr_info("event trace: Could not activate"
560 "syscall exit trace point"); 560 "syscall exit trace point");
561 } else { 561 } else {
562 set_bit(num, enabled_prof_exit_syscalls); 562 set_bit(num, enabled_perf_exit_syscalls);
563 sys_prof_refcount_exit++; 563 sys_perf_refcount_exit++;
564 } 564 }
565 mutex_unlock(&syscall_trace_lock); 565 mutex_unlock(&syscall_trace_lock);
566 return ret; 566 return ret;
567} 567}
568 568
569void prof_sysexit_disable(struct ftrace_event_call *call) 569void perf_sysexit_disable(struct ftrace_event_call *call)
570{ 570{
571 int num; 571 int num;
572 572
573 num = ((struct syscall_metadata *)call->data)->syscall_nr; 573 num = ((struct syscall_metadata *)call->data)->syscall_nr;
574 574
575 mutex_lock(&syscall_trace_lock); 575 mutex_lock(&syscall_trace_lock);
576 sys_prof_refcount_exit--; 576 sys_perf_refcount_exit--;
577 clear_bit(num, enabled_prof_exit_syscalls); 577 clear_bit(num, enabled_perf_exit_syscalls);
578 if (!sys_prof_refcount_exit) 578 if (!sys_perf_refcount_exit)
579 unregister_trace_sys_exit(prof_syscall_exit); 579 unregister_trace_sys_exit(perf_syscall_exit);
580 mutex_unlock(&syscall_trace_lock); 580 mutex_unlock(&syscall_trace_lock);
581} 581}
582 582