path: root/Makefile
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authorMatthias Maennich <maennich@google.com>2019-09-06 11:32:32 +0100
committerJessica Yu <jeyu@kernel.org>2019-09-10 10:30:43 +0200
commiteb8305aecb958e8787e7d603c7765c1dcace3a2b (patch)
tree03a29689498344ac197a953e3eb748d4d58794fc /Makefile
parent1d082773ff30e97c8bc10b65c4aa0d073664caac (diff)
scripts: Coccinelle script for namespace dependencies.
A script that uses the '<module>.ns_deps' files generated by modpost to automatically add the required symbol namespace dependencies to each module. Usage: 1) Move some symbols to a namespace with EXPORT_SYMBOL_NS() or define DEFAULT_SYMBOL_NAMESPACE 2) Run 'make' (or 'make modules') and get warnings about modules not importing that namespace. 3) Run 'make nsdeps' to automatically add required import statements to said modules. This makes it easer for subsystem maintainers to introduce and maintain symbol namespaces into their codebase. Co-developed-by: Martijn Coenen <maco@android.com> Signed-off-by: Martijn Coenen <maco@android.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Matthias Maennich <maennich@google.com> Signed-off-by: Jessica Yu <jeyu@kernel.org>
Diffstat (limited to 'Makefile')
1 files changed, 12 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 0cdb957ae2c3..014d55b400ca 100644
--- a/Makefile
+++ b/Makefile
@@ -1500,6 +1500,9 @@ help:
@echo ' headerdep - Detect inclusion cycles in headers'
@echo ' coccicheck - Check with Coccinelle'
@echo ''
+ @echo 'Tools:'
+ @echo ' nsdeps - Generate missing symbol namespace dependencies'
+ @echo ''
@echo 'Kernel selftest:'
@echo ' kselftest - Build and run kernel selftest (run as root)'
@echo ' Build, install, and boot kernel before'
@@ -1687,6 +1690,15 @@ quiet_cmd_tags = GEN $@
tags TAGS cscope gtags: FORCE
$(call cmd,tags)
+# Script to generate missing namespace dependencies
+# ---------------------------------------------------------------------------
+PHONY += nsdeps
+nsdeps: modules
+ $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost nsdeps
+ $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
# Scripts to check various things for consistency
# ---------------------------------------------------------------------------

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