diff options
Diffstat (limited to 'kernel/scripts/coccinelle/api/alloc')
| -rw-r--r-- | kernel/scripts/coccinelle/api/alloc/pool_zalloc-simple.cocci | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/kernel/scripts/coccinelle/api/alloc/pool_zalloc-simple.cocci b/kernel/scripts/coccinelle/api/alloc/pool_zalloc-simple.cocci new file mode 100644 index 000000000..9b7eb321a --- /dev/null +++ b/kernel/scripts/coccinelle/api/alloc/pool_zalloc-simple.cocci @@ -0,0 +1,84 @@ +/// +/// Use *_pool_zalloc rather than *_pool_alloc followed by memset with 0 +/// +// Copyright: (C) 2015 Intel Corp. GPLv2. +// Options: --no-includes --include-headers +// +// Keywords: dma_pool_zalloc, pci_pool_zalloc +// + +virtual context +virtual patch +virtual org +virtual report + +//---------------------------------------------------------- +// For context mode +//---------------------------------------------------------- + +@depends on context@ +expression x; +statement S; +@@ + +* x = \(dma_pool_alloc\|pci_pool_alloc\)(...); + if ((x==NULL) || ...) S +* memset(x,0, ...); + +//---------------------------------------------------------- +// For patch mode +//---------------------------------------------------------- + +@depends on patch@ +expression x; +expression a,b,c; +statement S; +@@ + +- x = dma_pool_alloc(a,b,c); ++ x = dma_pool_zalloc(a,b,c); + if ((x==NULL) || ...) S +- memset(x,0,...); + +@depends on patch@ +expression x; +expression a,b,c; +statement S; +@@ + +- x = pci_pool_alloc(a,b,c); ++ x = pci_pool_zalloc(a,b,c); + if ((x==NULL) || ...) S +- memset(x,0,...); + +//---------------------------------------------------------- +// For org and report mode +//---------------------------------------------------------- + +@r depends on org || report@ +expression x; +expression a,b,c; +statement S; +position p; +@@ + + x = @p\(dma_pool_alloc\|pci_pool_alloc\)(a,b,c); + if ((x==NULL) || ...) S + memset(x,0, ...); + +@script:python depends on org@ +p << r.p; +x << r.x; +@@ + +msg="%s" % (x) +msg_safe=msg.replace("[","@(").replace("]",")") +coccilib.org.print_todo(p[0], msg_safe) + +@script:python depends on report@ +p << r.p; +x << r.x; +@@ + +msg="WARNING: *_pool_zalloc should be used for %s, instead of *_pool_alloc/memset" % (x) +coccilib.report.print_report(p[0], msg) |