From: Steven Rostedt <[email protected]> If a modules has TRACE_EVENT() but does not use it, add a warning about it at build time.
Currently, the build must be made by adding "UT=1" to the make command line in order for this to trigger. Signed-off-by: Steven Rostedt (Google) <[email protected]> --- Changes since v9: https://lore.kernel.org/[email protected] - Remove use of "" in Makefile script (Nathan Chancellor) - Use $(objtree) instead of ${obtree} (Nathan Chancellor) - Move the update to tracepoint-update.c to a separate patch (Nathan Chancellor) - Remove unneeded "else" block for cmd_check_tracepoint define (Nicolas Schier) - Added use of "--module" parameter. scripts/Makefile.modfinal | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/scripts/Makefile.modfinal b/scripts/Makefile.modfinal index 542ba462ed3e..149e12ff5700 100644 --- a/scripts/Makefile.modfinal +++ b/scripts/Makefile.modfinal @@ -28,6 +28,10 @@ ccflags-remove-y := $(CC_FLAGS_CFI) .module-common.o: $(srctree)/scripts/module-common.c FORCE $(call if_changed_rule,cc_o_c) +ifneq ($(WARN_ON_UNUSED_TRACEPOINTS),) +cmd_check_tracepoint = $(objtree)/scripts/tracepoint-update --module $<; +endif + quiet_cmd_ld_ko_o = LD [M] $@ cmd_ld_ko_o = \ $(LD) -r $(KBUILD_LDFLAGS) \ @@ -57,6 +61,7 @@ if_changed_except = $(if $(call newer_prereqs_except,$(2))$(cmd-check), \ ifdef CONFIG_DEBUG_INFO_BTF_MODULES +$(if $(newer-prereqs),$(call cmd,btf_ko)) endif + +$(call cmd,check_tracepoint) targets += $(modules:%.o=%.ko) $(modules:%.o=%.mod.o) .module-common.o -- 2.51.0
