mirror of
https://github.com/torvalds/linux.git
synced 2024-12-25 12:21:37 +00:00
e105007c12
Find functions that refer to GFP_KERNEL but are called with locks held. The proposed change of converting the GFP_KERNEL is not necessarily the correct one. It may be desired to unlock the lock, or to not call the function under the lock in the first place. Signed-off-by: Nicolas Palix <npalix@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Michal Marek <mmarek@suse.cz>
75 lines
1.5 KiB
Plaintext
75 lines
1.5 KiB
Plaintext
/// Find functions that refer to GFP_KERNEL but are called with locks held.
|
|
/// The proposed change of converting the GFP_KERNEL is not necessarily the
|
|
/// correct one. It may be desired to unlock the lock, or to not call the
|
|
/// function under the lock in the first place.
|
|
///
|
|
// Confidence: Moderate
|
|
// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
|
|
// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
|
|
// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
|
|
// URL: http://coccinelle.lip6.fr/
|
|
// Comments:
|
|
// Options: -no_includes -include_headers
|
|
|
|
virtual patch
|
|
|
|
@gfp exists@
|
|
identifier fn;
|
|
position p;
|
|
@@
|
|
|
|
fn(...) {
|
|
... when != read_unlock_irq(...)
|
|
when != write_unlock_irq(...)
|
|
when != read_unlock_irqrestore(...)
|
|
when != write_unlock_irqrestore(...)
|
|
when != spin_unlock(...)
|
|
when != spin_unlock_irq(...)
|
|
when != spin_unlock_irqrestore(...)
|
|
when != local_irq_enable(...)
|
|
when any
|
|
GFP_KERNEL@p
|
|
... when any
|
|
}
|
|
|
|
@locked@
|
|
identifier gfp.fn;
|
|
@@
|
|
|
|
(
|
|
read_lock_irq
|
|
|
|
|
write_lock_irq
|
|
|
|
|
read_lock_irqsave
|
|
|
|
|
write_lock_irqsave
|
|
|
|
|
spin_lock
|
|
|
|
|
spin_trylock
|
|
|
|
|
spin_lock_irq
|
|
|
|
|
spin_lock_irqsave
|
|
|
|
|
local_irq_disable
|
|
)
|
|
(...)
|
|
... when != read_unlock_irq(...)
|
|
when != write_unlock_irq(...)
|
|
when != read_unlock_irqrestore(...)
|
|
when != write_unlock_irqrestore(...)
|
|
when != spin_unlock(...)
|
|
when != spin_unlock_irq(...)
|
|
when != spin_unlock_irqrestore(...)
|
|
when != local_irq_enable(...)
|
|
fn(...)
|
|
|
|
@depends on locked@
|
|
position gfp.p;
|
|
@@
|
|
|
|
- GFP_KERNEL@p
|
|
+ GFP_ATOMIC
|