diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/fork.c | 2 | ||||
| -rw-r--r-- | kernel/tracepoint.c | 26 |
2 files changed, 13 insertions, 15 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index d2799d1fc952..6a13c46cd87d 100644 --- a/kernel/fork.c +++ b/kernel/fork.c | |||
| @@ -1487,7 +1487,9 @@ static struct task_struct *copy_process(unsigned long clone_flags, | |||
| 1487 | 1487 | ||
| 1488 | total_forks++; | 1488 | total_forks++; |
| 1489 | spin_unlock(¤t->sighand->siglock); | 1489 | spin_unlock(¤t->sighand->siglock); |
| 1490 | syscall_tracepoint_update(p); | ||
| 1490 | write_unlock_irq(&tasklist_lock); | 1491 | write_unlock_irq(&tasklist_lock); |
| 1492 | |||
| 1491 | proc_fork_connector(p); | 1493 | proc_fork_connector(p); |
| 1492 | cgroup_post_fork(p); | 1494 | cgroup_post_fork(p); |
| 1493 | if (clone_flags & CLONE_THREAD) | 1495 | if (clone_flags & CLONE_THREAD) |
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c index 33cbd8c203f8..3490407dc7b7 100644 --- a/kernel/tracepoint.c +++ b/kernel/tracepoint.c | |||
| @@ -492,33 +492,29 @@ static int sys_tracepoint_refcount; | |||
| 492 | 492 | ||
| 493 | void syscall_regfunc(void) | 493 | void syscall_regfunc(void) |
| 494 | { | 494 | { |
| 495 | unsigned long flags; | 495 | struct task_struct *p, *t; |
| 496 | struct task_struct *g, *t; | ||
| 497 | 496 | ||
| 498 | if (!sys_tracepoint_refcount) { | 497 | if (!sys_tracepoint_refcount) { |
| 499 | read_lock_irqsave(&tasklist_lock, flags); | 498 | read_lock(&tasklist_lock); |
| 500 | do_each_thread(g, t) { | 499 | for_each_process_thread(p, t) { |
| 501 | /* Skip kernel threads. */ | 500 | set_tsk_thread_flag(t, TIF_SYSCALL_TRACEPOINT); |
| 502 | if (t->mm) | 501 | } |
| 503 | set_tsk_thread_flag(t, TIF_SYSCALL_TRACEPOINT); | 502 | read_unlock(&tasklist_lock); |
| 504 | } while_each_thread(g, t); | ||
| 505 | read_unlock_irqrestore(&tasklist_lock, flags); | ||
| 506 | } | 503 | } |
| 507 | sys_tracepoint_refcount++; | 504 | sys_tracepoint_refcount++; |
| 508 | } | 505 | } |
| 509 | 506 | ||
| 510 | void syscall_unregfunc(void) | 507 | void syscall_unregfunc(void) |
| 511 | { | 508 | { |
| 512 | unsigned long flags; | 509 | struct task_struct *p, *t; |
| 513 | struct task_struct *g, *t; | ||
| 514 | 510 | ||
| 515 | sys_tracepoint_refcount--; | 511 | sys_tracepoint_refcount--; |
| 516 | if (!sys_tracepoint_refcount) { | 512 | if (!sys_tracepoint_refcount) { |
| 517 | read_lock_irqsave(&tasklist_lock, flags); | 513 | read_lock(&tasklist_lock); |
| 518 | do_each_thread(g, t) { | 514 | for_each_process_thread(p, t) { |
| 519 | clear_tsk_thread_flag(t, TIF_SYSCALL_TRACEPOINT); | 515 | clear_tsk_thread_flag(t, TIF_SYSCALL_TRACEPOINT); |
| 520 | } while_each_thread(g, t); | 516 | } |
| 521 | read_unlock_irqrestore(&tasklist_lock, flags); | 517 | read_unlock(&tasklist_lock); |
| 522 | } | 518 | } |
| 523 | } | 519 | } |
| 524 | #endif | 520 | #endif |