diff options
Diffstat (limited to 'scripts/coccinelle/locks/call_kern.cocci')
| -rw-r--r-- | scripts/coccinelle/locks/call_kern.cocci | 67 |
1 files changed, 49 insertions, 18 deletions
diff --git a/scripts/coccinelle/locks/call_kern.cocci b/scripts/coccinelle/locks/call_kern.cocci index 00af5344a68..8f10b49603c 100644 --- a/scripts/coccinelle/locks/call_kern.cocci +++ b/scripts/coccinelle/locks/call_kern.cocci @@ -1,17 +1,20 @@ /// 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. +//# 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. +// Copyright: (C) 2012 Nicolas Palix. GPLv2. +// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2. +// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2. // URL: http://coccinelle.lip6.fr/ // Comments: // Options: -no_includes -include_headers virtual patch +virtual context +virtual org +virtual report @gfp exists@ identifier fn; @@ -32,28 +35,29 @@ fn(...) { ... when any } -@locked@ +@locked exists@ identifier gfp.fn; +position p1,p2; @@ ( -read_lock_irq +read_lock_irq@p1 | -write_lock_irq +write_lock_irq@p1 | -read_lock_irqsave +read_lock_irqsave@p1 | -write_lock_irqsave +write_lock_irqsave@p1 | -spin_lock +spin_lock@p1 | -spin_trylock +spin_trylock@p1 | -spin_lock_irq +spin_lock_irq@p1 | -spin_lock_irqsave +spin_lock_irqsave@p1 | -local_irq_disable +local_irq_disable@p1 ) (...) ... when != read_unlock_irq(...) @@ -64,11 +68,38 @@ local_irq_disable when != spin_unlock_irq(...) when != spin_unlock_irqrestore(...) when != local_irq_enable(...) -fn(...) +fn@p2(...) -@depends on locked@ +@depends on locked && patch@ position gfp.p; @@ - GFP_KERNEL@p + GFP_ATOMIC + +@depends on locked && !patch@ +position gfp.p; +@@ + +* GFP_KERNEL@p + +@script:python depends on !patch && org@ +p << gfp.p; +fn << gfp.fn; +p1 << locked.p1; +p2 << locked.p2; +@@ + +cocci.print_main("lock",p1) +cocci.print_secs("call",p2) +cocci.print_secs("GFP_KERNEL",p) + +@script:python depends on !patch && report@ +p << gfp.p; +fn << gfp.fn; +p1 << locked.p1; +p2 << locked.p2; +@@ + +msg = "ERROR: function %s called on line %s inside lock on line %s but uses GFP_KERNEL" % (fn,p2[0].line,p1[0].line) +coccilib.report.print_report(p[0], msg) |