coccinelle: misc: secs_to_jiffies: implement context and report modes

As requested by Ricardo and Jakub, implement report and context modes for
the secs_to_jiffies Coccinelle script.  While here, add the option to look
for opportunities to use secs_to_jiffies() in headers.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Easwar Hariharan <[email protected]>
Closes: https://lore.kernel.org/all/[email protected]/
Closes: https://lore.kernel.org/all/[email protected]/
Tested-by: Ricardo Ribalda <[email protected]>
Cc: Julia Lawall <[email protected]>
Cc: Nicolas Palix <[email protected]>
Cc: Jakub Kicinski <[email protected]>
Cc: Ricardo Ribalda <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: easwarh

scripts/coccinelle/misc/secs_to_jiffies.cocci

@@ -7,26 +7,65 @@
 // Confidence: High
 // Copyright: (C) 2024 Easwar Hariharan, Microsoft
 // Keywords: secs, seconds, jiffies
-//
+// Options: --include-headers
 
 virtual patch
+virtual report
+virtual context
 
-@depends on patch@ constant C; @@
+@pconst depends on patch@ constant C; @@
 
 - msecs_to_jiffies(C * 1000)
 + secs_to_jiffies(C)
 
-@depends on patch@ constant C; @@
+@pconstms depends on patch@ constant C; @@
 
 - msecs_to_jiffies(C * MSEC_PER_SEC)
 + secs_to_jiffies(C)
 
-@depends on patch@ expression E; @@
+@pexpr depends on patch@ expression E; @@
 
 - msecs_to_jiffies(E * 1000)
 + secs_to_jiffies(E)
 
-@depends on patch@ expression E; @@
+@pexprms depends on patch@ expression E; @@
 
 - msecs_to_jiffies(E * MSEC_PER_SEC)
 + secs_to_jiffies(E)
+
+@r depends on report && !patch@
+constant C;
+expression E;
+position p;
+@@
+
+(
+  msecs_to_jiffies(C@p * 1000)
+|
+  msecs_to_jiffies(C@p * MSEC_PER_SEC)
+|
+  msecs_to_jiffies(E@p * 1000)
+|
+  msecs_to_jiffies(E@p * MSEC_PER_SEC)
+)
+
+@c depends on context && !patch@
+constant C;
+expression E;
+@@
+
+(
+* msecs_to_jiffies(C * 1000)
+|
+* msecs_to_jiffies(C * MSEC_PER_SEC)
+|
+* msecs_to_jiffies(E * 1000)
+|
+* msecs_to_jiffies(E * MSEC_PER_SEC)
+)
+
+@script:python depends on report@
+p << r.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING opportunity for secs_to_jiffies()")