[PATCH v1] checkpatch: Add context-analysis attributes

[Vincent Donnefort <vdonnefort@google.com>]

Checkpatch doesn't know about the context analysis attributes and
misparses annotated declarations (e.g. mistaking __guarded_by() fields
for extern prototype). Add them to the known attributes list.

Cc: Marco Elver <elver@google.com>
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>
---
 scripts/checkpatch.pl | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index b8b64f720191..5210b4ed25ec 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -526,6 +526,25 @@ our $InitAttributeData = qr{$InitAttributePrefix(?:initdata\b)};
 our $InitAttributeConst = qr{$InitAttributePrefix(?:initconst\b)};
 our $InitAttributeInit = qr{$InitAttributePrefix(?:init\b)};
 our $InitAttribute = qr{$InitAttributeData|$InitAttributeConst|$InitAttributeInit};
+our $ContextAnalysis = qr{
+			__guarded_by\b|
+			__pt_guarded_by\b|
+			__rcu_guarded\b|
+			__must_hold\b|
+			__must_hold_shared\b|
+			__must_not_hold\b|
+			__acquires\b|
+			__acquires_shared\b|
+			__cond_acquires\b|
+			__cond_acquires_shared\b|
+			__releases\b|
+			__releases_shared\b|
+			__cond_releases\b|
+			__no_context_analysis\b|
+			__context_unsafe\b|
+			__acquires_ret\b|
+			__acquires_shared_ret\b
+		}x;
 
 # Notes to $Attribute:
 # We need \b after 'init' otherwise 'initconst' will cause a false positive in a check
@@ -551,6 +570,7 @@ our $Attribute	= qr{
 			__ro_after_init|
 			__kprobes|
 			$InitAttribute|
+			$ContextAnalysis|
 			__aligned\s*\(.*\)|
 			____cacheline_aligned|
 			____cacheline_aligned_in_smp|

base-commit: 6628e7d4c6b25c8d18f1345e3a20d21829aae7e4
-- 
2.56.0.567.gdb80ae8cd5-goog