diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2023-09-17 13:24:21 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-11-29 15:43:54 +0100 |
| commit | 5431fdd2c181dd2eac218e45b44deb2925fa48f0 (patch) | |
| tree | f2c70579913577d25213659f520dbdd24c6a915f /include/linux/spinlock.h | |
| parent | 18caaedaf4c3712ab6821f292598a8f86e6d7972 (diff) | |
ptrace: Convert ptrace_attach() to use lock guards
Created as testing for the conditional guard infrastructure.
Specifically this makes use of the following form:
scoped_cond_guard (mutex_intr, return -ERESTARTNOINTR,
&task->signal->cred_guard_mutex) {
...
}
...
return 0;
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lkml.kernel.org/r/20231102110706.568467727%40infradead.org
Diffstat (limited to 'include/linux/spinlock.h')
| -rw-r--r-- | include/linux/spinlock.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index ceb56b39c70f..90bc853cafb6 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -548,5 +548,31 @@ DEFINE_LOCK_GUARD_1(spinlock_irqsave, spinlock_t, DEFINE_LOCK_GUARD_1_COND(spinlock_irqsave, _try, spin_trylock_irqsave(_T->lock, _T->flags)) +DEFINE_LOCK_GUARD_1(read_lock, rwlock_t, + read_lock(_T->lock), + read_unlock(_T->lock)) + +DEFINE_LOCK_GUARD_1(read_lock_irq, rwlock_t, + read_lock_irq(_T->lock), + read_unlock_irq(_T->lock)) + +DEFINE_LOCK_GUARD_1(read_lock_irqsave, rwlock_t, + read_lock_irqsave(_T->lock, _T->flags), + read_unlock_irqrestore(_T->lock, _T->flags), + unsigned long flags) + +DEFINE_LOCK_GUARD_1(write_lock, rwlock_t, + write_lock(_T->lock), + write_unlock(_T->lock)) + +DEFINE_LOCK_GUARD_1(write_lock_irq, rwlock_t, + write_lock_irq(_T->lock), + write_unlock_irq(_T->lock)) + +DEFINE_LOCK_GUARD_1(write_lock_irqsave, rwlock_t, + write_lock_irqsave(_T->lock, _T->flags), + write_unlock_irqrestore(_T->lock, _T->flags), + unsigned long flags) + #undef __LINUX_INSIDE_SPINLOCK_H #endif /* __LINUX_SPINLOCK_H */ |