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selftests: kallsyms: fix double build stupidity

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The current arrangement will have the test modules rebuilt on
any make without having the script or code actually change.
Take Masahiro Yamada's suggested fix and cleanups on the Makefile
to fix this.

Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: 84b4a51fce ("selftests: add new kallsyms selftests")
Closes: https://lore.kernel.org/all/CAK7LNATRDODmfz1tE=inV-DQqPA4G9vKH+38zMbaGdpTuFWZFw@mail.gmail.com/T/#me6c8f98e82acbee6e75a31b34bbb543eb4940b15
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
This commit is contained in:
Luis Chamberlain 2024-11-27 14:10:57 -08:00
parent b86545e02e
commit 7ea13556f7
1 changed files with 8 additions and 9 deletions
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17
lib/tests/module/Makefile
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@ -3,13 +3,12 @@ obj-$(CONFIG_TEST_KALLSYMS_B) += test_kallsyms_b.o
obj-$(CONFIG_TEST_KALLSYMS_C) += test_kallsyms_c.o
obj-$(CONFIG_TEST_KALLSYMS_D) += test_kallsyms_d.o
$(obj)/%.c: FORCE
@$(kecho) " GEN $@"
$(Q)$(srctree)/lib/tests/module/gen_test_kallsyms.sh $@\
$(CONFIG_TEST_KALLSYMS_NUMSYMS) \
$(CONFIG_TEST_KALLSYMS_SCALE_FACTOR)
quiet_cmd_gen_test_kallsyms = GEN $@
cmd_gen_test_kallsyms = $< $@ \
$(CONFIG_TEST_KALLSYMS_NUMSYMS) \
$(CONFIG_TEST_KALLSYMS_SCALE_FACTOR)
clean-files += test_kallsyms_a.c
clean-files += test_kallsyms_b.c
clean-files += test_kallsyms_c.c
clean-files += test_kallsyms_d.c
$(obj)/%.c: $(src)/gen_test_kallsyms.sh FORCE
$(call if_changed,gen_test_kallsyms)
targets += $(foreach x, a b c d, test_kallsyms_$(x).c)