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* [Cocci] [PATCH v4] documentation: coccinelle: Improve command example for make C={1, 2}
@ 2020-08-11  0:23 ` Sumera Priyadarsini
  0 siblings, 0 replies; 7+ messages in thread
From: Sumera Priyadarsini @ 2020-08-11  0:23 UTC (permalink / raw)
  To: Julia.Lawall
  Cc: michal.lkml, linux-doc, corbet, gregkh, Gilles.Muller,
	nicolas.palix, linux-kernel, cocci

Modify coccinelle documentation to further clarify
the usage of the makefile C variable by coccicheck.

Signed-off-by: Sumera Priyadarsini <sylphrenadin@gmail.com>

---
Changes in v4:
        - Modify commit message to clarify C is a variable
---
 Documentation/dev-tools/coccinelle.rst | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/Documentation/dev-tools/coccinelle.rst b/Documentation/dev-tools/coccinelle.rst
index 6c791af1c859..74c5e6aeeff5 100644
--- a/Documentation/dev-tools/coccinelle.rst
+++ b/Documentation/dev-tools/coccinelle.rst
@@ -175,13 +175,20 @@ For example, to check drivers/net/wireless/ one may write::
     make coccicheck M=drivers/net/wireless/
 
 To apply Coccinelle on a file basis, instead of a directory basis, the
-following command may be used::
+C variable is used by the makefile to select which files to work with.
+This variable can be used to run scripts for the entire kernel, a
+specific directory, or for a single file.
 
-    make C=1 CHECK="scripts/coccicheck"
+For example, to check drivers/bluetooth/bfusb.c, the value 1 is
+passed to the C variable to check files that make considers
+need to be compiled.::
 
-To check only newly edited code, use the value 2 for the C flag, i.e.::
+    make C=1 CHECK=scripts/coccicheck drivers/bluetooth/bfusb.o
 
-    make C=2 CHECK="scripts/coccicheck"
+The value 2 is passed to the C variable to check files regardless of
+whether they need to be compiled or not.::
+
+    make C=2 CHECK=scripts/coccicheck drivers/bluetooth/bfusb.o
 
 In these modes, which work on a file basis, there is no information
 about semantic patches displayed, and no commit message proposed.
-- 
2.17.1

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^ permalink raw reply related	[flat|nested] 7+ messages in thread
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end of thread, other threads:[~2020-08-11 19:54 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
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2020-08-11  0:23 [Cocci] [PATCH v4] documentation: coccinelle: Improve command example for make C={1, 2} Sumera Priyadarsini
2020-08-11  0:23 ` [PATCH v4] documentation: coccinelle: Improve command example for make C={1,2} Sumera Priyadarsini
2020-08-11 16:38 ` Jonathan Corbet
2020-08-11 19:53 ` [Cocci] [PATCH v4] documentation: coccinelle: Improve command example for make C={1, 2} Julia Lawall
2020-08-11 19:53   ` Julia Lawall
     [not found] <ed46e96e-a24b-b3f3-3bdc-cd8f0d50bac9@web.de>
2020-08-11  8:22 ` Greg Kroah-Hartman
2020-08-11  8:22   ` Greg Kroah-Hartman

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