Commit a5019c7f authored by Sumera Priyadarsini's avatar Sumera Priyadarsini Committed by Jonathan Corbet

documentation: coccinelle: Improve command example for make C={1,2}

Modify coccinelle documentation to further clarify
the usage of the makefile C variable by coccicheck.
Signed-off-by: default avatarSumera Priyadarsini <sylphrenadin@gmail.com>
Acked-by: default avatarJulia Lawall <julia.lawall@inria.fr>
Link: https://lore.kernel.org/r/20200811002350.5553-1-sylphrenadin@gmail.comSigned-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent ec8213f8
...@@ -175,13 +175,20 @@ For example, to check drivers/net/wireless/ one may write:: ...@@ -175,13 +175,20 @@ For example, to check drivers/net/wireless/ one may write::
make coccicheck M=drivers/net/wireless/ make coccicheck M=drivers/net/wireless/
To apply Coccinelle on a file basis, instead of a directory basis, the 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 In these modes, which work on a file basis, there is no information
about semantic patches displayed, and no commit message proposed. about semantic patches displayed, and no commit message proposed.
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