diff options
Diffstat (limited to 'scripts/coccinelle/api/alloc/zalloc-simple.cocci')
| -rw-r--r-- | scripts/coccinelle/api/alloc/zalloc-simple.cocci | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/scripts/coccinelle/api/alloc/zalloc-simple.cocci b/scripts/coccinelle/api/alloc/zalloc-simple.cocci index 5cd1991c582e..d66c45356691 100644 --- a/scripts/coccinelle/api/alloc/zalloc-simple.cocci +++ b/scripts/coccinelle/api/alloc/zalloc-simple.cocci @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /// /// Use zeroing allocator rather than allocator followed by memset with 0 /// @@ -6,10 +7,10 @@ /// matched code has to be contiguous /// // Confidence: High -// Copyright: (C) 2009-2010 Julia Lawall, Nicolas Palix, DIKU. GPLv2. -// Copyright: (C) 2009-2010 Gilles Muller, INRIA/LiP6. GPLv2. -// Copyright: (C) 2017 Himanshu Jha GPLv2. -// URL: http://coccinelle.lip6.fr/rules/kzalloc.html +// Copyright: (C) 2009-2010 Julia Lawall, Nicolas Palix, DIKU. +// Copyright: (C) 2009-2010 Gilles Muller, INRIA/LiP6. +// Copyright: (C) 2017 Himanshu Jha +// URL: https://coccinelle.gitlabpages.inria.fr/website // Options: --no-includes --include-headers // // Keywords: kmalloc, kzalloc @@ -126,6 +127,16 @@ statement S; if ((x==NULL) || ...) S - memset((T2)x,0,E1); +@depends on patch@ +type T, T2; +expression x; +expression E1,E2,E3,E4; +statement S; +@@ + x = (T)dma_alloc_coherent(E1, E2, E3, E4); + if ((x==NULL) || ...) S +- memset((T2)x, 0, E2); + //---------------------------------------------------------- // For org mode //---------------------------------------------------------- @@ -198,9 +209,9 @@ statement S; position p; @@ - x = (T)dma_alloc_coherent@p(E2,E1,E3,E4); + x = (T)dma_alloc_coherent@p(E1,E2,E3,E4); if ((x==NULL) || ...) S - memset((T2)x,0,E1); + memset((T2)x,0,E2); @script:python depends on org@ p << r2.p; @@ -216,7 +227,7 @@ p << r2.p; x << r2.x; @@ -msg="WARNING: dma_alloc_coherent use in %s already zeroes out memory, so memset is not needed" % (x) +msg="WARNING: dma_alloc_coherent used in %s already zeroes out memory, so memset is not needed" % (x) coccilib.report.print_report(p[0], msg) //----------------------------------------------------------------- |