mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 03:40:52 +07:00
coccinelle: api: add kvmalloc script
Suggest kvmalloc, kvfree instead of opencoded patterns. Signed-off-by: Denis Efremov <efremov@linux.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
This commit is contained in:
Denis Efremov
Julia Lawall
parent
e16a7c47d5
commit
44d8870f21
256
scripts/coccinelle/api/kvmalloc.cocci
Normal file
256
scripts/coccinelle/api/kvmalloc.cocci
Normal file
@ -0,0 +1,256 @@
|
||||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
///
|
||||
/// Find if/else condition with kmalloc/vmalloc calls.
|
||||
/// Suggest to use kvmalloc instead. Same for kvfree.
|
||||
///
|
||||
// Confidence: High
|
||||
// Copyright: (C) 2020 Denis Efremov ISPRAS
|
||||
// Options: --no-includes --include-headers
|
||||
//
|
||||
|
||||
virtual patch
|
||||
virtual report
|
||||
virtual org
|
||||
virtual context
|
||||
|
||||
@initialize:python@
|
||||
@@
|
||||
filter = frozenset(['kvfree'])
|
||||
|
||||
def relevant(p):
|
||||
return not (filter & {el.current_element for el in p})
|
||||
|
||||
@kvmalloc depends on !patch@
|
||||
expression E, E1, size;
|
||||
identifier flags;
|
||||
binary operator cmp = {<=, <, ==, >, >=};
|
||||
identifier x;
|
||||
type T;
|
||||
position p;
|
||||
@@
|
||||
|
||||
(
|
||||
* if (size cmp E1 || ...)@p {
|
||||
...
|
||||
* E = \(kmalloc\|kzalloc\|kcalloc\|kmalloc_node\|kzalloc_node\|
|
||||
* kmalloc_array\|kmalloc_array_node\|kcalloc_node\)
|
||||
* (..., size, \(flags\|GFP_KERNEL\|\(GFP_KERNEL\|flags\)|__GFP_NOWARN\), ...)
|
||||
...
|
||||
} else {
|
||||
...
|
||||
* E = \(vmalloc\|vzalloc\|vmalloc_node\|vzalloc_node\)(..., size, ...)
|
||||
...
|
||||
}
|
||||
|
|
||||
* E = \(kmalloc\|kzalloc\|kcalloc\|kmalloc_node\|kzalloc_node\|
|
||||
* kmalloc_array\|kmalloc_array_node\|kcalloc_node\)
|
||||
* (..., size, \(flags\|GFP_KERNEL\|\(GFP_KERNEL\|flags\)|__GFP_NOWARN\), ...)
|
||||
... when != E = E1
|
||||
when != size = E1
|
||||
when any
|
||||
* if (E == NULL)@p {
|
||||
...
|
||||
* E = \(vmalloc\|vzalloc\|vmalloc_node\|vzalloc_node\)(..., size, ...)
|
||||
...
|
||||
}
|
||||
|
|
||||
* T x = \(kmalloc\|kzalloc\|kcalloc\|kmalloc_node\|kzalloc_node\|
|
||||
* kmalloc_array\|kmalloc_array_node\|kcalloc_node\)
|
||||
* (..., size, \(flags\|GFP_KERNEL\|\(GFP_KERNEL\|flags\)|__GFP_NOWARN\), ...);
|
||||
... when != x = E1
|
||||
when != size = E1
|
||||
when any
|
||||
* if (x == NULL)@p {
|
||||
...
|
||||
* x = \(vmalloc\|vzalloc\|vmalloc_node\|vzalloc_node\)(..., size, ...)
|
||||
...
|
||||
}
|
||||
)
|
||||
|
||||
@kvfree depends on !patch@
|
||||
expression E;
|
||||
position p : script:python() { relevant(p) };
|
||||
@@
|
||||
|
||||
* if (is_vmalloc_addr(E))@p {
|
||||
...
|
||||
* vfree(E)
|
||||
...
|
||||
} else {
|
||||
... when != krealloc(E, ...)
|
||||
when any
|
||||
* \(kfree\|kzfree\)(E)
|
||||
...
|
||||
}
|
||||
|
||||
@depends on patch@
|
||||
expression E, E1, size, node;
|
||||
binary operator cmp = {<=, <, ==, >, >=};
|
||||
identifier flags, x;
|
||||
type T;
|
||||
@@
|
||||
|
||||
(
|
||||
- if (size cmp E1)
|
||||
- E = kmalloc(size, flags);
|
||||
- else
|
||||
- E = vmalloc(size);
|
||||
+ E = kvmalloc(size, flags);
|
||||
|
|
||||
- if (size cmp E1)
|
||||
- E = kmalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
|
||||
- else
|
||||
- E = vmalloc(size);
|
||||
+ E = kvmalloc(size, GFP_KERNEL);
|
||||
|
|
||||
- E = kmalloc(size, flags | __GFP_NOWARN);
|
||||
- if (E == NULL)
|
||||
- E = vmalloc(size);
|
||||
+ E = kvmalloc(size, flags);
|
||||
|
|
||||
- E = kmalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
|
||||
- if (E == NULL)
|
||||
- E = vmalloc(size);
|
||||
+ E = kvmalloc(size, GFP_KERNEL);
|
||||
|
|
||||
- T x = kmalloc(size, flags | __GFP_NOWARN);
|
||||
- if (x == NULL)
|
||||
- x = vmalloc(size);
|
||||
+ T x = kvmalloc(size, flags);
|
||||
|
|
||||
- T x = kmalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
|
||||
- if (x == NULL)
|
||||
- x = vmalloc(size);
|
||||
+ T x = kvmalloc(size, GFP_KERNEL);
|
||||
|
|
||||
- if (size cmp E1)
|
||||
- E = kzalloc(size, flags);
|
||||
- else
|
||||
- E = vzalloc(size);
|
||||
+ E = kvzalloc(size, flags);
|
||||
|
|
||||
- if (size cmp E1)
|
||||
- E = kzalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
|
||||
- else
|
||||
- E = vzalloc(size);
|
||||
+ E = kvzalloc(size, GFP_KERNEL);
|
||||
|
|
||||
- E = kzalloc(size, flags | __GFP_NOWARN);
|
||||
- if (E == NULL)
|
||||
- E = vzalloc(size);
|
||||
+ E = kvzalloc(size, flags);
|
||||
|
|
||||
- E = kzalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
|
||||
- if (E == NULL)
|
||||
- E = vzalloc(size);
|
||||
+ E = kvzalloc(size, GFP_KERNEL);
|
||||
|
|
||||
- T x = kzalloc(size, flags | __GFP_NOWARN);
|
||||
- if (x == NULL)
|
||||
- x = vzalloc(size);
|
||||
+ T x = kvzalloc(size, flags);
|
||||
|
|
||||
- T x = kzalloc(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\));
|
||||
- if (x == NULL)
|
||||
- x = vzalloc(size);
|
||||
+ T x = kvzalloc(size, GFP_KERNEL);
|
||||
|
|
||||
- if (size cmp E1)
|
||||
- E = kmalloc_node(size, flags, node);
|
||||
- else
|
||||
- E = vmalloc_node(size, node);
|
||||
+ E = kvmalloc_node(size, flags, node);
|
||||
|
|
||||
- if (size cmp E1)
|
||||
- E = kmalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
|
||||
- else
|
||||
- E = vmalloc_node(size, node);
|
||||
+ E = kvmalloc_node(size, GFP_KERNEL, node);
|
||||
|
|
||||
- E = kmalloc_node(size, flags | __GFP_NOWARN, node);
|
||||
- if (E == NULL)
|
||||
- E = vmalloc_node(size, node);
|
||||
+ E = kvmalloc_node(size, flags, node);
|
||||
|
|
||||
- E = kmalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
|
||||
- if (E == NULL)
|
||||
- E = vmalloc_node(size, node);
|
||||
+ E = kvmalloc_node(size, GFP_KERNEL, node);
|
||||
|
|
||||
- T x = kmalloc_node(size, flags | __GFP_NOWARN, node);
|
||||
- if (x == NULL)
|
||||
- x = vmalloc_node(size, node);
|
||||
+ T x = kvmalloc_node(size, flags, node);
|
||||
|
|
||||
- T x = kmalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
|
||||
- if (x == NULL)
|
||||
- x = vmalloc_node(size, node);
|
||||
+ T x = kvmalloc_node(size, GFP_KERNEL, node);
|
||||
|
|
||||
- if (size cmp E1)
|
||||
- E = kvzalloc_node(size, flags, node);
|
||||
- else
|
||||
- E = vzalloc_node(size, node);
|
||||
+ E = kvzalloc_node(size, flags, node);
|
||||
|
|
||||
- if (size cmp E1)
|
||||
- E = kvzalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
|
||||
- else
|
||||
- E = vzalloc_node(size, node);
|
||||
+ E = kvzalloc_node(size, GFP_KERNEL, node);
|
||||
|
|
||||
- E = kvzalloc_node(size, flags | __GFP_NOWARN, node);
|
||||
- if (E == NULL)
|
||||
- E = vzalloc_node(size, node);
|
||||
+ E = kvzalloc_node(size, flags, node);
|
||||
|
|
||||
- E = kvzalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
|
||||
- if (E == NULL)
|
||||
- E = vzalloc_node(size, node);
|
||||
+ E = kvzalloc_node(size, GFP_KERNEL, node);
|
||||
|
|
||||
- T x = kvzalloc_node(size, flags | __GFP_NOWARN, node);
|
||||
- if (x == NULL)
|
||||
- x = vzalloc_node(size, node);
|
||||
+ T x = kvzalloc_node(size, flags, node);
|
||||
|
|
||||
- T x = kvzalloc_node(size, \(GFP_KERNEL\|GFP_KERNEL|__GFP_NOWARN\), node);
|
||||
- if (x == NULL)
|
||||
- x = vzalloc_node(size, node);
|
||||
+ T x = kvzalloc_node(size, GFP_KERNEL, node);
|
||||
)
|
||||
|
||||
@depends on patch@
|
||||
expression E;
|
||||
position p : script:python() { relevant(p) };
|
||||
@@
|
||||
|
||||
- if (is_vmalloc_addr(E))@p
|
||||
- vfree(E);
|
||||
- else
|
||||
- kfree(E);
|
||||
+ kvfree(E);
|
||||
|
||||
@script: python depends on report@
|
||||
p << kvmalloc.p;
|
||||
@@
|
||||
|
||||
coccilib.report.print_report(p[0], "WARNING opportunity for kvmalloc")
|
||||
|
||||
@script: python depends on org@
|
||||
p << kvmalloc.p;
|
||||
@@
|
||||
|
||||
coccilib.org.print_todo(p[0], "WARNING opportunity for kvmalloc")
|
||||
|
||||
@script: python depends on report@
|
||||
p << kvfree.p;
|
||||
@@
|
||||
|
||||
coccilib.report.print_report(p[0], "WARNING opportunity for kvfree")
|
||||
|
||||
@script: python depends on org@
|
||||
p << kvfree.p;
|
||||
@@
|
||||
|
||||
coccilib.org.print_todo(p[0], "WARNING opportunity for kvfree")
|
||||
Loading…
Reference in New Issue
Block a user